Home Smart stimuli-responsive biofunctionalized niosomal nanocarriers for programmed release of bioactive compounds into cancer cells in vitro and in vivo
Article Open Access

Smart stimuli-responsive biofunctionalized niosomal nanocarriers for programmed release of bioactive compounds into cancer cells in vitro and in vivo

  • Najmeh Alsadat Abtahi , Seyed Morteza Naghib EMAIL logo , Fatemeh Haghiralsadat EMAIL logo , Javad Zavar Reza , Fatemeh Hakimian EMAIL logo , Fatemeh Yazdian and Davood Tofighi
Published/Copyright: November 22, 2021
Become an author with De Gruyter Brill

Abstract

Cancer treatment is challenging due to late-stage diagnosis, drug resistance and systemic toxicity of chemotherapeutic agents. The formulation of the drug into nanoparticles (NPs) can enhance the treatment efficacy and effectiveness. Therefore, a new cationic niosomal formulation, which contains Tween 80, Tween 60, cholesterol and lysine amino acid as a platform model to enhance transfection efficacy and reach more acceptable stability, and curcumin (Cur) as a biological anti-cancer drug, are introduced. Here, the authors focused on the design and synthesis of novel lysine-mediated niosomal NPs for the effectual and controlled release of the antitumor agent, Cur, and turned to optimize niosome formulations, concerning the volume of cholesterol and surfactant to implement these anticancer agents, simultaneously. The characterization of NPs s was carried out and the results showed the successful synthesis of Cur-entrapped niosomal NPs with high efficacy, sufficient positive charges and a favorable size (95/33 nm). The in vitro studies have been performed to investigate the cytotoxicity, cellular uptake and apoptosis of normal and cancer cells treated by black niosome, free Cur and niosom-loaded Cur. The results showed that implementing agents by niosome caused enhanced cytotoxicity, uptake and anticancer activity in cancer cells in comparison with normal cells. Furthermore, the effect of this nanodrug was surveyed on the 4T1 xenografted Balb/C mouse tumor model. Cur delivery to cancer models caused a higher tumor inhibition rate than in other groups.

1 Introduction

The key factor to raise the overall survival rate in most cancers is the surgical removal of the tumor [1,2]. However, surgery establishes several drawbacks such as infection, pain, side effects of the anesthesia, bleeding, etc. [3]. Therefore, the survival rate of cancer patients could be improved by applying a combination of drugs and chemotherapy [4,5]. This method may have serious side effects, especially in older women including fatigue, numbness or tingling in the toes and fingers (neuropathy), and nausea [6]. Nanomaterials have attracted much attention in drug delivery [7,8] and biomedicine [9,10,11,12] to address this challenge. Multiresponsive materials, biomaterials and NPs can be regulated for releasing drugs, genes, proteins and bioactive compounds in a target, according to the specific extracellular/cellular stimuli triggered via physical, biochemical, biological and chemical changes [13,14]. These smart systems can direct to transformations in the nanocarrier structure/chemistry, establishing a favorable release profile of the drug in a precise place [8,15].

Cur (a polyphenol extracted from Curcuma longa) gained tremendous attention due to its biocompatibility, safety and bioactivities like antiviral, antimicrobial, anti-inflammatory and antioxidant activities (for treatment of several chronic diseases such as cancers, neurodegenerative diseases, obesity, liver disease, metabolic syndrome, arthritis and inflammation) [16]. Recently, Cur (diferuloylmethane, Curcuma longa L.) has been applied to prevent the growth of human cancer cells, such as multiple myeloma and colorectal cancer [17]. Several studies have demonstrated that Cur can effectively regulate the balance of ROS within the human body, and possesses a regulatory effect on a variety of diseases that occur among the elderly patient population such as Alzheimer’s disease [18]. The main mechanism of Cur activity for cancer prevention and anticancer activities is the suppression of the main elements of the onset, metastasis and progression of various cancers [19].

Cur loaded into nanoscaled drug delivery systems (such as liposomes or niosomes) have created a promising type of drug delivery system in order to transfer drugs safely to their targeted sites and decrease adverse effects on healthy tissues [20]. In contrast to liposome as a targeting carrier, which not only lacks stability at various pH values but also has high costs, niosome can improve the desired properties required for a carrier, including drug solubility, drug bioavailability, drug release, biodegradability, biocompatibility and stability when peptide-based drugs are used [21,22,23]. Niosomes, as nonionic surfactant vesicles, have a lipid bilayer structure that is suitable for delivering different types of pharmaceutical materials like chemotherapeutic agents, hormones, genes, peptides and antigens [24,25,26].

Recently, the biological and medical application of amino acids has been offered to improve cell penetration efficacy via attaching the hyperbranched arginine cores and positively charged lysine. The essential amino acid, l-lysine, that is formed using the fermentation process is not stable for long-term use [27,28]. Thus, l-lysine and its derivatives are usually exploited for food/drug purposes.

In the present study, we synthesized and characterized lysine-mediated niosomal NPs for controlled release of a bioactive compound, Cur, and optimized nanomaterial formulations, in order to reduce the volume of cholesterol and surfactant and enhance the bio/cytocompatibility simultaneously (Figure 1). The combination of Cur and nanoniosomes may be used as a new cancer drug in clinical applications.

Figure 1 
               Schematic representation of fabrication and characterization of lysine-mediated niosomal NPs loaded with Cur.
Figure 1

Schematic representation of fabrication and characterization of lysine-mediated niosomal NPs loaded with Cur.

2 Material and methods

2.1 Preparation of lysine-grafted niosome-encapsulated Cur

The niosomes containing cholesterol, Tween 80 and Tween 60 surfactants were prepared using the thin-film hydration technique (DaeJung Metals and Chemicals, South Korea). In brief, cholesterol (Sigma-Aldrich, USA) was mixed with 100 μL of chloroform to obtain different molar ratios of the combination (Table 1). About 500 µg of Cur (Sigma-Aldrich, USA) was dissolved in 3,000 µL of methanol (0.17 g/L) and was inserted into the lipids. The solution was added to tween surfactants under agitation conditions. A thin lipid was formed under reduced pressure in a rotary flash evaporator (Heidolph, Germany). The film was hydrated with 3 mL of PBS at 60°C at pH 7.4 and was sonicated for 30 min using a probe sonicator (model UP200St, Hielscher Ultrasonics GmbH, Germany) to decrease the mean size of the vesicle. The zeta potential, particle size, and entrapment efficiency were also determined to further investigate this niosome. Then, l-lysine amino acid solution (0.1 mg/mL) was added to the niosome solution and incubated for 24 h at room temperature. Finally, the sample was centrifuged for 2 min and washed with PBS and Tween 60 (Figure 2).

Table 1

The impact of different molar ratios of Tween 80, Tween 60 and cholesterol, on size, zeta potential, entrapment efficiency (EE%), PDI and release percentage (R) within the modified niosomes

Code Tween 80 (%) Tween 60 (%) Cholesterol (%) PDI EE (%) Size (nm) Zeta (mV)
F1 90 0 10 0.272 ± 0.06 59.74 ± 0.003 120 ± 0.012 −23.04 ± 0.01
F2 80 0 20 0.238 ± 0.02 82 ± 0.013 116 ± 0.003 −21.13 ± 0.04
F3 70 0 30 0.221 ± 0.07 73.1 ± 0.16 118 ± 0.023 −24.45 ± 0.06
F4 80 10 10 0.214 ± 0.03 90.1 ± 0.045 111 ± 0.0065 −21.08 ± 0.02
F5 75 15 10 0.202 ± 0.04 96.27 ± 0.086 107 ± 0.054 −18.34 ± 0.09
F6 70 20 10 0.206 ± 0.05 100 ± 0.002 92.01 ± 0.001 −26.92 ± 0.00
Figure 2 
                  Schematic representation of the synthesis method and preparation of lysine-mediated niosomal NPs loaded with Cur.
Figure 2

Schematic representation of the synthesis method and preparation of lysine-mediated niosomal NPs loaded with Cur.

2.2 Analyzing the encapsulation efficiency

The entrapment efficiency was analyzed through spectroscopic measurements. A ultraviolet spectrophotometer was used to measure the quantities of niosome-encapsulated Cur (model T80+, PG Instruments, United Kingdom) at 429 nm (λ max) [29]. The efficiency of encapsulation was measured as follows:

Encapsulation efficiency % = The amount of CURCUMIN encapsulated within niosomes Total amount of CURCUMIN added × 100

2.3 Physical characterization of niosomal vesicles

The physical characterization of niosomal vesicles is detailed in the supporting information (SI).

2.4 In vitro drug release study

The in vitro drug release study is detailed in the SI.

2.5 Cell culture, cytotoxicity analysis and cellular uptake of nanoniosomes-loaded Cur

The cell culture, cytotoxicity analysis and cellular uptake of nanoniosomes-loaded Cur are detailed in the SI.

2.6 Cell apoptosis assay

The cell apoptosis assays are detailed in the SI.

2.7 In vivo experiments

The in vivo experiment protocols are detailed in the SI.

2.8 Statistical analysis

Statistical data are detailed in the SI.

3 Results and discussion

3.1 Effects of surfactants and cholesterol ratios on niosome formulation

In order to control the drug release, vesicle size and entrapment efficiency, different formulations of niosomal NPs were synthesized. In this regard, the concentration of Cur in the system was kept constant and other substances including Tween 80, Tween 60 and cholesterol, were chaged in each formulation (Table 1). According to Table 1, Tween 80 in the absence of Tween 60 shows a significant effect on the Cur entrapment efficacy in niosomes, so that its amount increased from about 60 to 73%. Cur entrapment efficiency was further increased by the addition of Tween 60 surfactant to niosomal Cur formulations, resulting in 100% entrapment efficiency of the designed system (an increase of 10% in F4, and an increase of 20% in F6, respectively). In addition to the effect on the efficiency of Cur loading, Tween 60 surfactant also decreased the mean diameter of niosomes from 111 ± 0.006 to 92.01 ± 0.001 nm, representing a decrease of about 18% in the particle size (PDI was constant in all formulations and zeta potential was relatively small in the negative range). These findings were similar to those reported by Agarwal et al. [30], which showed that increased surfactant hydrophilicity established a bigger vesicle size. Finally, based on high entrapment efficiency, the F6 formulation was selected as the optimal sample for further studies.

3.2 The effect of lysine amino acid in niosomal formulation

Since F6 formulation was chosen as the optimal sample, according to the parameters measured in Table 1, the effect of lysine concentration was also examined in F6, which can be seen in Table 2. The addition of lysine led to a decrease in PDI, which reached 0.182 for the F7 formulation compared to 0.206 for F6, as expected. Also, the zeta potential was significantly reduced when the lysine concentration in F9 reached 10−1 mol/mL (from −26 mV for F9 to −5 mV for F6), which could be related to close relationship with the lysine charge.

Table 2

Effect of the concentration of lysine on PDI, size, entrapment efficacy (EE%), zeta potential and release percentage (R) in the modified niosomes

Code Tween 80 (%) Tween 60 (%) Cholesterol (%) Lysine (mol/mL) PDI EE (%) Size (nm) Zeta (mV)
F7 70 20 10 10−3 0.182 ± 0.02 99.35 ± 0.085 94.02 ± 0.034 −18.41 ± 0.02
F8 70 20 10 10−2 0.178 ± 0.06 98.24 ± 0.016 98.16 ± 0.023 −10.6 ± 0.45
F9 70 20 10 10−1 0.164 ± 0.059 100.001 ± 0.653 95.33 ± 0.034 −5.23 ± 0.054

On the other hand, there was no considerable change in the vesicle size of niosomes added to the lysine solution. Therefore, niosomal formulation containing Tween 80/Tween 60/cholesterol in a molar ratio of 70:20:10, and lysine at a concentration of 10−1 mol/mL (F9) were used. Therefore, all the parameters listed in Table 2, including the controlled release of Cur, entrapment efficiency, small diameter and enhanced transfection effectiveness were suitable for this sample.

3.3 Characterization of modified niosome NPs

SEM and CryoTEM images of the modified nanocarriers are depicted in Figure 3a and b. As shown in the figures, the lysine-grafted niosomal NPs were spherical and round with a smooth surface, as well as there was not considerable aggregation in this formulation. Atomic forces microscopy (AFM) analysis was used to investigate the shape and distribution of the particles, as shown in Figure 3c. AFM images showed a spherical and multilamellar structure of the modified carrier (F9). There was no evidence for aggregation of niosomal NPs after one day of storage at 4°C, which was predictable according to the results obtained from Tables 1 and 2 because the zeta potential was significantly reduced from −26 mV for F6 to −5 mV for F9 (80% reduction), after the addition of lysine to niosomes. Release profiles of nanoniosomes and lysine-modified nanoniosomes from optimal formulations (F6 and F9) in PBS at a pH of 7.4 and 37°C is shown in Figure 4a and b. According to the obtained 3D images, approximately 32.33% of the loaded drug in nanoniosomes, and 28.23% of the loaded drug in modified nanoniosomes were released after 72 h. The Cur release profile in both niosomes was biphasic with a primary quick release period, followed by a slower release. Physical stability of the modified nanoniosomes after storing for 15, 30, 45, and 60 days was assessed by measuring the vesicle size, zeta potential and entrapment efficiency (Figure 4c) at 4°C. As can be seen, the parameters mentioned above had a steady trend during these 2 months, and their changes during this period of time were relatively low (p-value of less than 0.05). To confirm the loaded Cur in nanoniosomes, Fourier-transform infrared spectroscopy (FTIR) examinations were established. Figure 4d demonstrates the FTIR spectra of Cur, blank noisome, Cur loaded in noisome and Cur loaded in noisome modified by lysine. The bands of Cur shown in the figure were C–H out-of-plane bending vibrations in 800–600/cm, C═O stretch at 1,152/cm, aromatic ring C═C stretching at 1,506/cm, and O–H and C–H stretching at 3,507/cm. The FTIR pattern of the blank niosome showed various characteristic peaks of ingredients in the range 3,500–1,115/cm; The peak at 3,435/cm was attributed to Tween-60 and cholesterol (O–H stretching in phenols and N–H stretching in 2°-amines). The C–O stretch belonged to Tween-60 that occurred at 1,148/cm. C═O exhibited a robust absorption band at 1642.15/cm, owing to the stretch vibration of C–O in Tween 60. The results of FTIR analysis of free Cur presented the C–H out-of-plane bending vibrations in the region 800–600/cm, C═O stretching at 1,152/cm, aromatic ring C═C stretching at 1,506/cm, and O–H and C–H stretching at 3,507/cm. In comparison with the unmodified noisomes, the broader bands at 3,500 and 500–900/cm, and the sharper band at 1,600/cm, confirmed the entrapment of the drug into the carriers. The presence of the entrapped Cur in nanoniosome formulations was confirmed by FTIR analysis.

Figure 3 
                  (a) SEM image of the modified niosomal NPs; (b) cryo-TEM image of the modified niosomal NPs; (c–e) 2D, 3D, and line analysis of the AFM image of the modified niosomal NPs, respectively.
Figure 3

(a) SEM image of the modified niosomal NPs; (b) cryo-TEM image of the modified niosomal NPs; (c–e) 2D, 3D, and line analysis of the AFM image of the modified niosomal NPs, respectively.

Figure 4 
                  The response surface plot of the (a) droplet size and (b) zeta potential. (c) Physical stability of the modified niosomal NPs during two months. (d) FTIR spectra of Cur, blank noisome, Cur loaded in noisome NPs, and lysine-grafted Cur-niosomal NPs.
Figure 4

The response surface plot of the (a) droplet size and (b) zeta potential. (c) Physical stability of the modified niosomal NPs during two months. (d) FTIR spectra of Cur, blank noisome, Cur loaded in noisome NPs, and lysine-grafted Cur-niosomal NPs.

3.4 In vitro Cur release from the modified noisome NPs

Investigation of in vitro release of Cur was carried out by the dialysis approach. The results of 72 h release profiles of Cur loaded in modified noisomes, from F9 in both plasma and PBS at temperatures of 25, 37, and 42°C at pH 7.4 and 5.5, are shown in Figure 5. In Figure 5a–d, it is quite obvious that the rate of drug release increases with increasing temperature from 25 to 42°C. After 72 h in plasma, 14.45, 18.23, and 20.34% of the loaded drug and 12.45, 14.23, and 16.34% of the loaded drug were released at pH 7.4 and 5.5, respectively, which indicated that an increase in pH increased the drug release rate. The release rate in PBS at pH 7.4 was significantly different from the obtained data in plasma, so that drug release increased from 20.34 to 30.34% at 25°C (an increase of almost 50%). The same conditions were used to assess drug release at pH 5.5. The cumulative release profile of the drug was obviously biphasic and the early fast release phase was followed by a slower release period. In addition, the Cur release rate of noisomes was compared to that of niosomes modified by lysine, as indicated in Figure 5e. Lysine was able to reduce the release rate of Cur by about 17% compared to the blank niosomes, demonstrating the effectiveness of the modified nanocarriers.

Figure 5 
                  (a and b) In vitro release of the modified niosomal NPs in PBS at pH 7.4 and 5.5; (c and d) in vitro release of the modified niosomal NPs in plasma at pH 7.4 and 5.5; (e) the release rate of DOTAB-mediated niosomal NPs and lysine-mediated niosomal NPs in PBS at pH 7.4 for 72 h.
Figure 5

(a and b) In vitro release of the modified niosomal NPs in PBS at pH 7.4 and 5.5; (c and d) in vitro release of the modified niosomal NPs in plasma at pH 7.4 and 5.5; (e) the release rate of DOTAB-mediated niosomal NPs and lysine-mediated niosomal NPs in PBS at pH 7.4 for 72 h.

As a stimuli-triggered material/polymer-encapsulated drug/therapeutic agent is established for programmable and on-demand drug delivery, its release can be started with changes in the structure such as charge switching, surface layers de-shedding and degradation of materials [31]. Moreover, breaking of a bond can be established that starts the release of drugs that are covalently immobilized to the functional groups of materials [32]. A smart pH-responsive system can be used for the site-specific release of drugs via altering the solubility of the nanocarrier or via cleaving a pH-responsive bond [33]. When oral administration is used for the delivery of a drug to the tumor (colon), this system is very useful because the pH of the stomach is lower than that of the colon, which helps deliver the drug in the colon. The temperature of tumor tissues are higher than that of normal tissues [34], which can be applied for stimuli-sensitive tumor-targeted drug delivery.

3.5 Optimization of lysine volume and concentration on the zeta potential and nanoparticle size

The results of the statistical analysis of volume and concentration of lysine on the zeta potential and nanoparticle size are shown in Table 3. For this purpose, both the maximum value of the zeta potential and the minimum value of the nanoparticle size were considered under optimal conditions. The results were consistent with the second-order polynomial equation. The number of regression coefficients was measured. The fitted equation (based on the coded values) for the nanoparticle size and zeta potential (R 2 = 0.91 and R 2 = 0.75, respectively) is

(1) Size of nanoparticle = + 561.13 + 40.85 × A + 25.28 × B + 27.92 × A × B 258.01 × A 2 233.91 × B 2 ,

(2) Zeta potential = 5.61 + 1.58 × A + 0.30 × B + 3.84 × A × B 1.35 × A 2 1.27 × B 2 + 4.54 × A 2 × B 2.74 × A × B 2 ,

where A and B are the volume and concentration of lysine, respectively. One constant and two quadratic terms were recorded by the regression model coefficients (equations (1) and (2)). The importance of each coefficient was demonstrated with p-values. The obtained determination coefficient (R 2 = 0.91) showed that 91% variability within the response could be described with this model. Moreover, the obtained zeta potential (75%) was in good agreement with the proposed model (equation (2)). The optimal values of the variables from the quadratic model differentiation were obtained. The predicted optimum nanoparticle size and zeta potential corresponding to these values were about 163.27 nm and −0.71, respectively. The model accuracy was confirmed to predict the optimal value. Further experiments were carried out in triplicates, using the enhanced essential aspects (codes 1 and 1 for A and B). The regression equations were graphically represented as 3D plots, which demonstrated the interaction of the variables (Figure 4a and b). The plots of elliptical contour indicated that the interactions were essential to enhance the optimum conditions.

Table 3

Statistical design for the optimization of volume and concentration of lysine

Run Lysine volume Lysine concentration
1 −1 −1
2 1 −1
3 −1 1
4 1 1
5 −1 0
6 1 0
7 0 −1
8 0 1
10 0 0
11 0 0
12 0 0
13 0 0

3.6 Cytotoxicity assays

Cytotoxicity of niosome, the niosome loaded with Cur, and the modified niosome loaded with Cur against MCF10-A cells and the ovarian cancer cell lines, A270s and A270cp-1, were evaluated by MTT assays after 24, 48, and 72 h incubation, and they were compared with untreated cells as a control sample. From Figure 6, it is evident that cell viability decreased progressively once the cells were treated with Cur and nanocarriers. The modified nanocarriers presented more reduction in cell viability of tumor cells in lower dosages. The IC50 value for the modified niosome was between 0.035 and 0.068 μM, compared to that for free Cur, which was 0.08 to 0.135 μM in cancer cells. The results showed that IC50 was between 0.0513 and 0.0827 μM; however, it changed between 0.112 and 0.201 μM for free Cur. The assay demonstrated that the IC50 value in cancer cells was lower than that in normal cells (∼1.5-fold) for free Cur and the modified niosome as well as lower in the niosomal form than that in the free form in all cells. Furthermore, a higher number of viable normal cells were observed for the same concentration of the modified NPs. These findings confirmed that Cur in niosomal and free forms imposed low cytotoxicity over MCF-10A normal cells (Figure 7).

Figure 6 
                  (a) The cell viability 2,5-diphenyl-2H-tetrazolium bromide (MTT) analysis of the modified niosomal NPs in A270CP-1, (b) MTT analysis of the modified niosomal NPs in A270S cells, and (c) MTT analysis of the modified niosomal NPs in MCF10-A cells. The assays were carried out three times to obtain the mean ± standard deviations.
Figure 6

(a) The cell viability 2,5-diphenyl-2H-tetrazolium bromide (MTT) analysis of the modified niosomal NPs in A270CP-1, (b) MTT analysis of the modified niosomal NPs in A270S cells, and (c) MTT analysis of the modified niosomal NPs in MCF10-A cells. The assays were carried out three times to obtain the mean ± standard deviations.

Figure 7 
                  (a) The cell viability analysis of the modified niosomal NPs in cancerous and normal cells at 37 and 42°C for 24 h. (b) The cell viability analysis of the modified niosomal NPs in cancerous and normal cells at 37 and 42°C for 48 h. (c) The cell viability analysis of the modified niosomal NPs in cancerous and normal cells at 37 and 42°C for 72 h. (d) The cell viability analysis of the lysine-mediated niosomal NPs and the DOTAP-mediated niosomal NPs in cancerous and normal cells at 37°C for 48 h.
Figure 7

(a) The cell viability analysis of the modified niosomal NPs in cancerous and normal cells at 37 and 42°C for 24 h. (b) The cell viability analysis of the modified niosomal NPs in cancerous and normal cells at 37 and 42°C for 48 h. (c) The cell viability analysis of the modified niosomal NPs in cancerous and normal cells at 37 and 42°C for 72 h. (d) The cell viability analysis of the lysine-mediated niosomal NPs and the DOTAP-mediated niosomal NPs in cancerous and normal cells at 37°C for 48 h.

3.7 Intracellular uptake studies

After formulation and characterization of the modified nanoniosomes, we evaluated the ability of these niosomes to be endocytosed by cells. Figures 8 and 9 show an entire panel of the fluorescence microscope images of different cancer cell lines, A270cp-1 and A270s cell lines, incubated with the modified nanocarriers for 4 h. Our results depicted the robust uptake of the nanoniosomes in cancer cell lines. Control cells without any Cur or niosome treatment did not show any fluorescence (data not shown). The cells incubated with the modified nanocarriers exhibited greater green intensity compared to the cells treated with DOTAP, demonstrating rapid internalization and accumulation of the modified nanoniosone-loaded Cur in cancer cells. These results indicated that Cur inserted the cancerous cells at a much higher rate than that in healthy cells. The findings confirmed the obtained results from cytotoxicity tests.

Figure 8 
                  Cellular uptake images of A270cp-1 incubated with the modified niosomal NPs for 4 h.
Figure 8

Cellular uptake images of A270cp-1 incubated with the modified niosomal NPs for 4 h.

Figure 9 
                  Cellular uptake images of A270s incubated with the modified niosomal NPs for 4 h.
Figure 9

Cellular uptake images of A270s incubated with the modified niosomal NPs for 4 h.

3.8 Apoptosis assay

Quantitative apoptotic activity measurements were performed via flow cytometry analysis. The statistically significant apoptotic activities of the modified nanocarriers were compared with free Cur solution in cancer cells (p < 0.05). The flow cytometry analysis indicated that the cell apoptosis for the modified nanocarriers was considerably higher than that for free Cur as shown in Figure 10a (p < 0.05).

Figure 10 
                  (a) Apoptosis assay by flow cytometry, after treating the cells for 48 h. (b and c) Real-time PCR quantitative analysis of p53 and Nf-ĸB expression after the treatment with different formulations for 48 h.
Figure 10

(a) Apoptosis assay by flow cytometry, after treating the cells for 48 h. (b and c) Real-time PCR quantitative analysis of p53 and Nf-ĸB expression after the treatment with different formulations for 48 h.

3.9 Gene expression

To validate the downstream impact of Cur gene silencing efficiency, expression levels of Nf-ĸB and P53 were used to analyze the entrapped drug efficiency. Nf-ĸB inhibits cell death through mitochondrial apoptosis pathways. This research utilized the qRT-PCR techniques for detecting the P53 and Nf-ĸB expression, after the restoration by cancer cell lines at the transcription level. After treatment of cells with free Cur and the modified nanocarriers, the relative expression of NF-κB and P53 genes in the cells was evaluated. According to Figure 10b and c, the expression of Nf-ĸB and P53 on the cancer cells treated with a solution containing Cur did not exhibit any significant differences in comparison with the control cells. The results of NF-κB and P53 gene expression showed that free Cur caused low NF-κB expression and high P53 expression when compared to the control cells. Moreover, the change in the expression of the above genes in the cells treated with the modified nanocarriers was more considerable compared to the free drug. Our results confirmed the previous observations.

The present standard care for cancer is chemotherapy and/or surgery that have several side effects in patients. Therefore, it is necessary to develop new approaches for reducing the side effects. In this regard, Cur has received much attention as an alternative for conventional treatments. It has been shown that natural compounds possess chemopreventive and/or anticancer activities with minimum side effects [35]. Cur, a natural diphenol extracted from Curcuma longa ground rhizomes, has some potential beneficial biological features such as chemoprevention and anticancer features [36]. Despite these excellent effects, the use of Cur has been limited because of its low therapeutic index and poor aqueous solubility. The best way these problems were solved over the past 30 years was the use of a vesicular nanocarrier like niosome. Niosomes have been utilized successfully as a drug delivery system for solving some main biopharmaceutical issues. They are vesicular systems that can entrap the hydrophilic drug and hydrophobic drugs, simultaneously. Therefore, hydrophobic and hydrophilic drugs are combined into niosomes [37]. The formation of niosomes requires an amphiphilic molecule including two main parts: a polar head or a hydrophilic group and a nonpolar or a hydrophobic tail as the structure of the surfactant molecules. Cholesterol in niosomes can considerably change the membrane permeability, fluidity, vesicle stability, niosomes size, and entrapment efficiency [38,39]. Here, the charged molecules were added into niosome formulation to improve the vesicle electrostatic stability and to increase the encapsulation efficiency. These molecules can attach to the cell membrane because, in most cells, there is a negative charge on the cell membrane. Afterward, the charged nanocarriers enter the target cell by endocytosis [40,41]. DOTAP is the best choice used in this regard. Although DOTAP is cheap and efficient in both in vivo and in vitro delivery [42], it has been limited due to its toxicity and susceptibility to protein-induced aggregation in blood [43]. So, altering the pathway is necessary as it increases the niosome charge without side effects. Lysine is an essential amino acid that is important for normal growth and muscle turnover and helps transport fats across cells. Lysine with its lysyl side chain ((CH2)4NH2) is a basic, positively charged, and the polar amino acid at pH 7. It plays a vital role in the structure as an amphipathic and hydrophobic part of the side chain. Moreover, it is involved in the salt bridge, where it is paired with the negatively charged atoms (anion or carboxylate group) to create hydrogen bonds [44]. These special properties make lysine amino acid a better choice than DOTAP. In this work, we created a new cationic niosomal formulation modified by lysine amino acid that encapsulated Cur. PDI%, EE%, size, and zeta potential were evaluated at two levels. First, the vesicular system was made from tween 80 (nonionic surfactant) and cholesterol. We obtained perfect results after the addition of Tween 60, which increased entrapment efficiency and vesicle zeta potential and decreased PDI and vesicle size. Tween 80 was used as the safest surfactant; however, a slight amount of Tween 60 was also essential for the effective results. Second, the vesicular systems were analyzed after the addition of lysine at different concentrations. The results showed improved stability, decreased mean size diameter, enhanced drug encapsulation and increased mean zeta potential. So, lysine like DOTAP could functionalize the nanocarriers for amending cell attachment, encapsulation efficiency and controlled release behavior of the modified nanoniosemes, and reducing side effects through a reduction in the cholesterol content. It also reduces the PDI related to the additional reciprocal repel force, within the particles with the same sign charge in the suspension system. Introducing a charge over the vesicle surface is essential to prevent the aggregation of vesicular systems. Furthermore, in sharp contrast to DOTAP, lysine is an essential amino acid in the body. On the niosome surface, lysine is changed to safer particles that make it more positive than DOTAP. Keeping the niosomal suspension at 4°C for 60 days, there was no sharp changes in comparison with the fresh specimens, based on encapsulation efficiency, zeta potential, and vesicle size of the improved formulation. This result indicates that the novel niosomal nanocarriers modified by lysine can decrease several drawbacks such as niosome instability, niosome aggregation, drug leakage and drug fusion. Based on the release rate of the nanocarriers, it is found that the cumulative release profile of the drug is biphasic. The diffusion mechanism controlled the rate of release quickly (concentration gradient of the drug between the buffer and niosome), while the slow drug release phase was sought by the inner layer [36]. We also investigated the MTT of free Cur and the modified carriers on A270s and A270cp-1 cells (Figures 6 and 7). The results showed higher cytotoxicity effects. The examination of Cur demonstrated that free and niosomal Cur induces cell cycle arrest or apoptosis and most importantly downregulated nuclear factor kappa B (NF-κB) expression in various human cancer cell lines [45,46]. Apoptotic activity measurements by flow cytometry showed that there were statistically significant results for lysine-mediated nanocarriers, in comparison with the apoptotic activity of the niosomal Cur and free Cur (p < 0.05).

3.10 Assessment of the in vivo tumor inhibition abilities

The anticancer effects of the control, free Cur, niosomal Cur and biofunctionalized nanocarrier loaded with Cur were evaluated by 4T1 xenografted Balb/C mice. To administer different formulations, the mice were injected with free Cur, niosomal Cur (DOTAP), biofunctionalized nanocarrier loaded with Cur, and normal saline on days 0, 3, 6, 9, and 12 after the tumor reached 100 mm3. On day 21, the mice were sacrificed, the tumor tissues were detached and the mice volumes were measured. Compared to the control (2,320 ± 200 mm3), the group administered with free Cur (1,180 ± 100 mm3) depicted smaller tumor tissues on day 21. The tumor tissues of the group administered with niosomal Cur (DOTAP) (880 ± 50 mm3) and niosomal Cur modified by lysine (810 ± 100 mm3) were even smaller than that of the group administered with free Cur. Nevertheless, the group treated with the biofunctionalized niosomal Cur depicted the smallest volume among all treated groups (Figure 11a). Based on Figure 11b, changes in free Cur, niosomal Cur and the biofunctionalized nanocarrier loaded with Cur are triggered by the constant growth inhibition, established by the mentioned formulations. The results suggested that the modified niosomal Cur could enhance the tumor inhibition potential and offer advanced therapeutic influence more than DOTAP-mediated niosomal Cur and free Cur.

Figure 11 
                  (a) Influence of different formulations on the mouse weight, evaluated every 3 days. (b) The effects of the formulations on the tumor size (mm3). (c) Tumor inhibition rate (f: free; n: noisome; nio: niosome). Data were exhibited as the mean ± SD and p < 0.05 was considered a significant statistical difference.
Figure 11

(a) Influence of different formulations on the mouse weight, evaluated every 3 days. (b) The effects of the formulations on the tumor size (mm3). (c) Tumor inhibition rate (f: free; n: noisome; nio: niosome). Data were exhibited as the mean ± SD and p < 0.05 was considered a significant statistical difference.

After every administration, to evaluate the toxic effects of different formulations, the changes were monitored in the mice weight, every 3 days (Figure 11c and Table 4). The control group depicted an increase in body weight while, in other groups, the weight was marginally decreased on day 21. According to Figure 11c, a quick weight loss is identified in the free Cur-treated mice in comparison with other groups after 6 days. The results showed that the amended nisomal Cur did not enhance the toxic effects in comparison with the niosomal Cur.

Table 4

Bodyweight of mice that received different therapies

Time (days) Control Free Cur Niosomal Cur Modified noisome by lysine
0 21.1 21.2 20.1 20
3 21.7 20.3 ± 0.3 20.7 20.5
6 22.5 ± 0.1 19.3 20.4 20.4 ± 0.01
9 22.8 18.5 20.1 20.2
12 22.7 18.3 ± 0.3 19.8 ± 0.1 19.1
15 22.8 ± 0.1 18.3 20 19.8 ± .01
18 22.9 18.2 ± 0.1 19.6 ± 0.1 19.1
21 23 ± 0.2 18.3 19.8 ± 0.1 19.2 ± 0.1

miRNA-34a, a known tumor suppressor, is involved in various processes in a cell. miRNA-34a regulation influenced by the p53 gene and Sirt1 was depicted as one of the miR-34a targets, whose Sirt1 expression was related to P53. An increase in miRNA-34a levels establishes a reduction in Sirt1 bioactivity and stimulates P53 bioactivity. Moreover, one of the approaches inducing differentiation in the cells by miRNA-34a is the expression regulation of Wnt1. Wnt1 was depicted as the target of miRNA-34a. Decrease of Wnt1 stimulates cells differentiation [47]. Furthermore, previous findings demonstrated that miRNA-34a reduced the level of EGFR and MMP7 expression in tumor cells by triggering enzymatic cascades downstream of the EGFR signaling pathway, including PI3K.

Many potent chemopreventives were extracted from plants; however, Cur exhibited one of the most studied phytochemicals [48]. Recent research studies demonstrated that Cur can be a potent antiarthritic, antithrombotic, antiatherosclerotic, hepatoprotective, antidiabetic, antiangiogenic, antimetastatic, antiproliferative, anti-inflammatory and antioxidant agent in in vitro and in vivo [49]. Many surveys demonstrated that Cur could induce apoptosis in cancer cells via inhibition of different intracellular transcription factors and secondary messengers like NF-kB, AP-1, c-Jun, and the JAK-STAT pathway [8]. Moreover, Cur had considerable potential for inhibiting carcinogenesis established by biochemical carcinogens [50]. Cur also enhances the level of endogenous antioxidants through the Nrf2 pathway to boost body defense against ROS [8]. In spite of these benefits, Cur possessed poor water solubility and so it exhibited solubility limited bioavailability (class II drug in the Biopharmaceutics Classification System) [48]. To address this challenge, promising modified niosomal NPs were proposed in this research that could increase bioavailability through enhancing solubility.

4 Conclusion

Niosomes are nonionic surfactant vesicular systems that can be considered as efficient and emerging materials for drug delivery applications. High efficiency and minimum toxicity are the targets for designing a new formula. Our findings suggested a novel lysine-mediated niosomal formulation that could cover these goals. The encapsulation efficiency of the drug and MTT test was extremely successful. The obtained results indicated that the novel formula was effective for killing cancer cells in vitro and in vivo.

  1. Funding information: The authors state no funding involved.

  2. Author contributions: All authors have accepted responsibility for the entire content of this manuscript and approved its submission.

  3. Conflict of interest: The authors state no conflict of interest.

References

[1] Sternby Eilard M , Lundgren L , Cahlin C , Strandell A , Svanberg T , Sandström P . Surgical treatment for gallbladder cancer–a systematic literature review. Scand J Gastroenterol. 2017;52(5):505–14.10.1080/00365521.2017.1284895Search in Google Scholar PubMed

[2] Rahimzadeh Z , Naghib SM , Askari E , Molaabasi F , Sadr A , Zare Y , et al. A rapid nanobiosensing platform based on herceptin-conjugated graphene for ultrasensitive detection of circulating tumor cells in early breast cancer. Nanotechnol Rev. 2021;10(1):744–53.10.1515/ntrev-2021-0049Search in Google Scholar

[3] Sánchez-Elvira LA , Martínez SB , del Toro Gil L , Tello VG . Postoperative management in the Intensive Care Unit of head and neck surgery patients. Medicina Intensiva (Engl Ed). 2020;44(1):46–53.10.1016/j.medine.2019.05.009Search in Google Scholar

[4] Zhao W , Cong Y , Li H-M , Li S , Shen Y , Qi Q , et al. Challenges and potential for improving the druggability of podophyllotoxin-derived drugs in cancer chemotherapy. Nat Product Rep. 2021;38(3):470–88.10.1039/D0NP00041HSearch in Google Scholar PubMed

[5] van der Meel R , Sulheim E , Shi Y , Kiessling F , Mulder WJM , Lammers T . Smart cancer nanomedicine. Nat Nanotechnol. 2019;14(11):1007–17.10.1038/s41565-019-0567-ySearch in Google Scholar PubMed PubMed Central

[6] Heinhuis KM , Ros W , Kok M , Steeghs N , Beijnen JH , Schellens JHM . Enhancing antitumor response by combining immune checkpoint inhibitors with chemotherapy in solid tumors. Ann Oncol. 2019;30(2):219–35.10.1093/annonc/mdy551Search in Google Scholar PubMed

[7] Khatibi SA , Misaghi A , Moosavy M-H , Basti AA , Koohi MK , Khosravi P , et al. Encapsulation of Zataria multiflora Bioss. Essential oil into nanoliposomes and in vitro antibacterial activity against Escherichia coli O157:H7. J Food Process Preservation. 2017;41(3):e12955.10.1111/jfpp.12955Search in Google Scholar

[8] Abtahi NA , Naghib SM , Ghalekohneh SJ , Mohammadpour Z , Nazari H , Mosavi SM , et al. Multifunctional stimuli-responsive niosomal nanoparticles for co-delivery and co-administration of gene and bioactive compound: In vitro and in vivo studies. Chem Eng J. 2022;429:132090.10.1016/j.cej.2021.132090Search in Google Scholar

[9] Sartipzadeh O , Naghib SM , Shokati F , Rahmanian M , Majidzadeh-A K , Zare Y , et al. Microfluidic-assisted synthesis and modelling of monodispersed magnetic nanocomposites for biomedical applications. Nanotechnol Rev. 2020;9(1):1397–407.10.1515/ntrev-2020-0097Search in Google Scholar

[10] Huang Y , Zeng J . Recent development and applications of nanomaterials for cancer immunotherapy. Nanotechnol Rev. 2020;9(1):367–84.10.1515/ntrev-2020-0027Search in Google Scholar

[11] Kalantari E , Naghib SM . A comparative study on biological properties of novel nanostructured monticellite-based composites with hydroxyapatite bioceramic. Mater Sci Engineering: C. 2019;98:1087–96.10.1016/j.msec.2018.12.140Search in Google Scholar PubMed

[12] Mirhosseini M , Shekari-Far A , Hakimian F , Haghiralsadat BF , Fatemi SK , Dashtestani F . Core-shell Au@Co-Fe hybrid nanoparticles as peroxidase mimetic nanozyme for antibacterial application. Process Biochem. 2020;95:131–8.10.1016/j.procbio.2020.05.003Search in Google Scholar

[13] Gooneh-Farahani S , Naimi-Jamal MR , Naghib SM . Stimuli-responsive graphene-incorporated multifunctional chitosan for drug delivery applications: a review. Expert Opin Drug Delivery. 2019;16(1):79–99.10.1080/17425247.2019.1556257Search in Google Scholar PubMed

[14] Malekimusavi H , Ghaemi A , Masoudi G , Chogan F , Rashedi H , Yazdian F , et al. Graphene oxide-l-arginine nanogel: A pH-sensitive fluorouracil nanocarrier. Biotechnol Appl Biochem. 2019;66(5):772–80.10.1002/bab.1768Search in Google Scholar PubMed

[15] Gooneh-Farahani S , Naghib SM , Naimi-Jamal MR , Seyfoori A . A pH-sensitive nanocarrier based on BSA-stabilized graphene-chitosan nanocomposite for sustained and prolonged release of anticancer agents. Sci Rep. 2021;11(1):17404.10.1038/s41598-021-97081-1Search in Google Scholar PubMed PubMed Central

[16] Giordano A , Tommonaro G . Curcumin and cancer. Nutrients. 2019;11(10):2376.10.3390/nu11102376Search in Google Scholar PubMed PubMed Central

[17] Hewlings SJ , Kalman DS . Curcumin: a review of its effects on human health. Foods. 2017;6(10):92.10.3390/foods6100092Search in Google Scholar PubMed PubMed Central

[18] Griñán-Ferré C , Bellver-Sanchis A , Izquierdo V , Corpas R , Roig-Soriano J , Chillón M , et al. The pleiotropic neuroprotective effects of resveratrol in cognitive decline and Alzheimer’s disease pathology: from antioxidant to epigenetic therapy. Ageing Res Rev. 2021;67:101271.10.1016/j.arr.2021.101271Search in Google Scholar PubMed

[19] Reiter RJ , Rosales-Corral SA , Tan D-X , Acuna-Castroviejo D , Qin L , Yang S-F , et al. Melatonin, a full service anti-cancer agent: inhibition of initiation, progression and metastasis. Int J Mol Sci. 2017;18(4):843.10.3390/ijms18040843Search in Google Scholar PubMed PubMed Central

[20] Moballegh Nasery M , Abadi B , Poormoghadam D , Zarrabi A , Keyhanvar P , Khanbabaei H , et al. Curcumin delivery mediated by bio-based nanoparticles: a review. Molecules. 2020;25(3):689.10.3390/molecules25030689Search in Google Scholar PubMed PubMed Central

[21] Ge X , Wei M , He S , Yuan W-E . Advances of non-ionic surfactant vesicles (niosomes) and their application in drug delivery. Pharmaceutics. 2019;11(2):55.10.3390/pharmaceutics11020055Search in Google Scholar PubMed PubMed Central

[22] Durak S , Esmaeili Rad M , Alp Yetisgin A , Eda Sutova H , Kutlu O , Cetinel S , et al. Niosomal drug delivery systems for ocular disease—recent advances and future prospects. Nanomaterials. 2020;10(6):1191.10.3390/nano10061191Search in Google Scholar PubMed PubMed Central

[23] Barani M , Mirzaei M , Torkzadeh-Mahani M , Lohrasbi-Nejad A , Nematollahi MH . A new formulation of hydrophobin-coated niosome as a drug carrier to cancer cells. Mater Sci Engineering: C. 2020;113:110975.10.1016/j.msec.2020.110975Search in Google Scholar PubMed

[24] Rathee J , Kanwar R , Kaushik D , Salunke DB , Mehta SK . Niosomes as efficient drug delivery modules for encapsulation of Toll-like receptor 7 agonists and IDO-inhibitor. Appl Surf Sci. 2020;505:144078.10.1016/j.apsusc.2019.144078Search in Google Scholar

[25] Moghddam SRM , Ahad A , Aqil M , Imam SS , Sultana Y . Formulation and optimization of niosomes for topical diacerein delivery using 3-factor, 3-level Box-Behnken design for the management of psoriasis. Mater Sci Eng C. 2016;69:789–97.10.1016/j.msec.2016.07.043Search in Google Scholar PubMed

[26] Barani M , Nematollahi MH , Zaboli M , Mirzaei M , Torkzadeh-Mahani M , Pardakhty A , et al. In silico and in vitro study of magnetic niosomes for gene delivery: The effect of ergosterol and cholesterol. Mater Sci Eng C. 2019;94:234–46.10.1016/j.msec.2018.09.026Search in Google Scholar PubMed

[27] Zheng M , Pan M , Zhang W , Lin H , Wu S , Lu C , et al. Poly (α-l-lysine)-based nanomaterials for versatile biomedical applications: current advances and perspectives. Bioactive Materials. 2021;6(7):1878–909.10.1016/j.bioactmat.2020.12.001Search in Google Scholar PubMed PubMed Central

[28] Moghaddam SV , Abedi F , Alizadeh E , Baradaran B , Annabi N , Akbarzadeh A , et al. Lysine-embedded cellulose-based nanosystem for efficient dual-delivery of chemotherapeutics in combination cancer therapy. Carbohydr Polym. 2020;250:116861.10.1016/j.carbpol.2020.116861Search in Google Scholar PubMed

[29] Sharma V , Anandhakumar S , Sasidharan M . Self-degrading niosomes for encapsulation of hydrophilic and hydrophobic drugs: an efficient carrier for cancer multi-drug delivery. Mater Sci Eng C Mater Biol Appl. 2015;56:393–400.10.1016/j.msec.2015.06.049Search in Google Scholar PubMed

[30] Agarwal Y , Rajinikanth PS , Ranjan S , Tiwari U , Balasubramnaiam J , Pandey P , et al. Curcumin loaded polycaprolactone-/polyvinyl alcohol-silk fibroin based electrospun nanofibrous mat for rapid healing of diabetic wound: an in vitro and in-vivo studies. Int J Biol Macromol. 2021;176:376–86.10.1016/j.ijbiomac.2021.02.025Search in Google Scholar PubMed

[31] Kamaly N , Yameen B , Wu J , Farokhzad OC . Degradable controlled-release polymers and polymeric nanoparticles: mechanisms of controlling drug release. Chem Rev. 2016;116(4):2602–63.10.1021/acs.chemrev.5b00346Search in Google Scholar

[32] Das SS , Bharadwaj P , Bilal M , Barani M , Rahdar A , Taboada P , et al. Stimuli-responsive polymeric nanocarriers for drug delivery, imaging, and theragnosis. Polymers. 2020;12(6):1397.10.3390/polym12061397Search in Google Scholar

[33] Cicuéndez M , Doadrio JC , Hernández A , Portolés MT , Izquierdo-Barba I , Vallet-Regí M . Multifunctional pH sensitive 3D scaffolds for treatment and prevention of bone infection. Acta Biomaterialia. 2018;65:450–61.10.1016/j.actbio.2017.11.009Search in Google Scholar

[34] Cavaliere R , Ciocatto EC , Giovanella BC , Heidelberger C , Johnson RO , Margottini M , et al. Selective heat sensitivity of cancer cells. Biochemical and clinical studies. Cancer. 1967;20(9):1351–81.10.1002/1097-0142(196709)20:9<1351::AID-CNCR2820200902>3.0.CO;2-#Search in Google Scholar

[35] Wong KE , Ngai SC , Chan KG , Lee LH , Goh BH , Chuah LH . Curcumin nanoformulations for colorectal cancer: a review. Front Pharmacol. 2019;10:152.10.3389/fphar.2019.00152Search in Google Scholar

[36] Yallapu MM , Othman SF , Curtis ET , Bauer NA , Chauhan N , Kumar D , et al. Curcumin-loaded magnetic nanoparticles for breast cancer therapeutics and imaging applications. Int J Nanomed. 2012;7:1761–79.10.2147/IJN.S29290Search in Google Scholar

[37] Awasthi R , Kumar S , Kulkarni T . G. Frontier lipid-based carrier systems for drug targeting: a laconic review on niosomes. Pharm Nanotechnol. 2014;2(3):116–28.10.2174/2211738503666150107234904Search in Google Scholar

[38] Abdelkader H , Alani AWG , Alany RG . Recent advances in non-ionic surfactant vesicles (niosomes): self-assembly, fabrication, characterization, drug delivery applications and limitations. Drug Delivery. 2014;21(2):87–100.10.3109/10717544.2013.838077Search in Google Scholar

[39] Yeo PL , Lim CL , Chye SM , Ling APK , Koh RY . Niosomes: a review of their structure, properties, methods of preparation, and medical applications. Asian Biomed. 2017;11(4):301–13.10.1515/abm-2018-0002Search in Google Scholar

[40] Abbas P , Esmaeil M . Nano-niosomes drug, vaccine gene delivery: a rapid overview. Nanomed J. 2013;1(1):1–2.Search in Google Scholar

[41] Ciani L , Ristori S , Salvati A , Calamai L , Martini G . DOTAP/DOPE and DC-Chol/DOPE lipoplexes for gene delivery: zeta potential measurements and electron spin resonance spectra. Biochimica et Biophysica Acta (BBA) – Biomembranes. 2004;1664(1):70–9.10.1016/j.bbamem.2004.04.003Search in Google Scholar

[42] Simberg D , Weisman S , Talmon Y , Barenholz Y . DOTAP (and other cationic lipids): chemistry, biophysics, and transfection. Crit Reviews™ Therapeutic Drug Carr Syst. 2004;21(4):1–62.10.1615/CritRevTherDrugCarrierSyst.v21.i4.10Search in Google Scholar PubMed

[43] Pun SH , Hoffman AS . B.8 – Nucleic acid delivery. In: Ratner BD , Hoffman AS , Schoen FJ , Lemons JE , editors. Biomaterials science (Third edn.). Cambridge, Massachusetts, USA: Academic Press; 2013. p. 1047–54.10.1016/B978-0-08-087780-8.00096-6Search in Google Scholar

[44] Huang K-Y , Hsu JB-K , Lee T-Y . Characterization and identification of lysine succinylation sites based on deep learning method. Sci Rep. 2019;9(1):1–15. 10.1038/s41598-019-52552-4Search in Google Scholar PubMed PubMed Central

[45] Mukerjee A , Vishwanatha JK . Formulation, characterization and evaluation of curcumin-loaded PLGA nanospheres for cancer therapy. Anticancer Res. 2009;29(10):3867–75.Search in Google Scholar

[46] Burgos‐Morón E , Calderón‐Montaño JM , Salvador J , Robles A , López‐Lázaro M . The dark side of curcumin. Int J Cancer. 2010;126(7):1771–5.10.1002/ijc.24967Search in Google Scholar PubMed

[47] Tarantino C , Paolella G , Cozzuto L , Minopoli G , Pastore L , Parisi S , et al. miRNA 34a, 100, and 137 modulate differentiation of mouse embryonic stem cells. FASEB J. 2010;24(9):3255–63.10.1096/fj.09-152207Search in Google Scholar PubMed

[48] Bansal SS , Goel M , Aqil F , Vadhanam MV , Gupta RC . Advanced drug delivery systems of curcumin for cancer chemoprevention. Cancer Prev Res. 2011;4(8):1158.10.1158/1940-6207.CAPR-10-0006Search in Google Scholar PubMed PubMed Central

[49] Aggarwal BB , Harikumar KB . Potential therapeutic effects of curcumin, the anti-inflammatory agent, against neurodegenerative, cardiovascular, pulmonary, metabolic, autoimmune and neoplastic diseases. Int J Biochem Cell Biol. 2009;41(1):40–59.10.1016/j.biocel.2008.06.010Search in Google Scholar PubMed PubMed Central

[50] Thangapazham RL , Sharma A , Maheshwari RK . Multiple molecular targets in cancer chemoprevention by curcumin. AAPS J. 2006;8(3):E443.10.1208/aapsj080352Search in Google Scholar PubMed PubMed Central

Received: 2021-08-29
Revised: 2021-10-12
Accepted: 2021-11-03
Published Online: 2021-11-22

© 2021 Najmeh Alsadat Abtahi et al., published by De Gruyter

This work is licensed under the Creative Commons Attribution 4.0 International License.

Articles in the same Issue

  1. Research Articles
  2. Improved impedance matching by multi-componential metal-hybridized rGO toward high performance of microwave absorption
  3. Pure-silk fibroin hydrogel with stable aligned micropattern toward peripheral nerve regeneration
  4. Effective ion pathways and 3D conductive carbon networks in bentonite host enable stable and high-rate lithium–sulfur batteries
  5. Fabrication and characterization of 3D-printed gellan gum/starch composite scaffold for Schwann cells growth
  6. Synergistic strengthening mechanism of copper matrix composite reinforced with nano-Al2O3 particles and micro-SiC whiskers
  7. Deformation mechanisms and plasticity of ultrafine-grained Al under complex stress state revealed by digital image correlation technique
  8. On the deformation-induced grain rotations in gradient nano-grained copper based on molecular dynamics simulations
  9. Removal of sulfate from aqueous solution using Mg–Al nano-layered double hydroxides synthesized under different dual solvent systems
  10. Microwave-assisted sol–gel synthesis of TiO2-mixed metal oxide nanocatalyst for degradation of organic pollutant
  11. Electrophoretic deposition of graphene on basalt fiber for composite applications
  12. Polyphenylene sulfide-coated wrench composites by nanopinning effect
  13. Thermal conductivity and thermoelectric properties in 3D macroscopic pure carbon nanotube materials
  14. An effective thermal conductivity and thermomechanical homogenization scheme for a multiscale Nb3Sn filaments
  15. Friction stir spot welding of AA5052 with additional carbon fiber-reinforced polymer composite interlayer
  16. Improvement of long-term cycling performance of high-nickel cathode materials by ZnO coating
  17. Quantum effects of gas flow in nanochannels
  18. An approach to effectively improve the interfacial bonding of nano-perfused composites by in situ growth of CNTs
  19. Effects of nano-modified polymer cement-based materials on the bending behavior of repaired concrete beams
  20. Effects of the combined usage of nanomaterials and steel fibres on the workability, compressive strength, and microstructure of ultra-high performance concrete
  21. One-pot solvothermal synthesis and characterization of highly stable nickel nanoparticles
  22. Comparative study on mechanisms for improving mechanical properties and microstructure of cement paste modified by different types of nanomaterials
  23. Effect of in situ graphene-doped nano-CeO2 on microstructure and electrical contact properties of Cu30Cr10W contacts
  24. The experimental study of CFRP interlayer of dissimilar joint AA7075-T651/Ti-6Al-4V alloys by friction stir spot welding on mechanical and microstructural properties
  25. Vibration analysis of a sandwich cylindrical shell in hygrothermal environment
  26. Water barrier and mechanical properties of sugar palm crystalline nanocellulose reinforced thermoplastic sugar palm starch (TPS)/poly(lactic acid) (PLA) blend bionanocomposites
  27. Strong quadratic acousto-optic coupling in 1D multilayer phoxonic crystal cavity
  28. Three-dimensional shape analysis of peripapillary retinal pigment epithelium-basement membrane layer based on OCT radial images
  29. Solvent regulation synthesis of single-component white emission carbon quantum dots for white light-emitting diodes
  30. Xanthate-modified nanoTiO2 as a novel vulcanization accelerator enhancing mechanical and antibacterial properties of natural rubber
  31. Effect of steel fiber on impact resistance and durability of concrete containing nano-SiO2
  32. Ultrasound-enhanced biosynthesis of uniform ZnO nanorice using Swietenia macrophylla seed extract and its in vitro anticancer activity
  33. Temperature dependence of hardness prediction for high-temperature structural ceramics and their composites
  34. Study on the frequency of acoustic emission signal during crystal growth of salicylic acid
  35. Controllable modification of helical carbon nanotubes for high-performance microwave absorption
  36. Role of dry ozonization of basalt fibers on interfacial properties and fracture toughness of epoxy matrix composites
  37. Nanosystem’s density functional theory study of the chlorine adsorption on the Fe(100) surface
  38. A rapid nanobiosensing platform based on herceptin-conjugated graphene for ultrasensitive detection of circulating tumor cells in early breast cancer
  39. Improving flexural strength of UHPC with sustainably synthesized graphene oxide
  40. The role of graphene/graphene oxide in cement hydration
  41. Structural characterization of microcrystalline and nanocrystalline cellulose from Ananas comosus L. leaves: Cytocompatibility and molecular docking studies
  42. Evaluation of the nanostructure of calcium silicate hydrate based on atomic force microscopy-infrared spectroscopy experiments
  43. Combined effects of nano-silica and silica fume on the mechanical behavior of recycled aggregate concrete
  44. Safety study of malapposition of the bio-corrodible nitrided iron stent in vivo
  45. Triethanolamine interface modification of crystallized ZnO nanospheres enabling fast photocatalytic hazard-free treatment of Cr(vi) ions
  46. Novel electrodes for precise and accurate droplet dispensing and splitting in digital microfluidics
  47. Construction of Chi(Zn/BMP2)/HA composite coating on AZ31B magnesium alloy surface to improve the corrosion resistance and biocompatibility
  48. Experimental and multiscale numerical investigations on low-velocity impact responses of syntactic foam composites reinforced with modified MWCNTs
  49. Comprehensive performance analysis and optimal design of smart light pole for cooperative vehicle infrastructure system
  50. Room temperature growth of ZnO with highly active exposed facets for photocatalytic application
  51. Influences of poling temperature and elongation ratio on PVDF-HFP piezoelectric films
  52. Large strain hardening of magnesium containing in situ nanoparticles
  53. Super stable water-based magnetic fluid as a dual-mode contrast agent
  54. Photocatalytic activity of biogenic zinc oxide nanoparticles: In vitro antimicrobial, biocompatibility, and molecular docking studies
  55. Hygrothermal environment effect on the critical buckling load of FGP microbeams with initial curvature integrated by CNT-reinforced skins considering the influence of thickness stretching
  56. Thermal aging behavior characteristics of asphalt binder modified by nano-stabilizer based on DSR and AFM
  57. Building effective core/shell polymer nanoparticles for epoxy composite toughening based on Hansen solubility parameters
  58. Structural characterization and nanoscale strain field analysis of α/β interface layer of a near α titanium alloy
  59. Optimization of thermal and hydrophobic properties of GO-doped epoxy nanocomposite coatings
  60. The properties of nano-CaCO3/nano-ZnO/SBR composite-modified asphalt
  61. Three-dimensional metallic carbon allotropes with superhardness
  62. Physical stability and rheological behavior of Pickering emulsions stabilized by protein–polysaccharide hybrid nanoconjugates
  63. Optimization of volume fraction and microstructure evolution during thermal deformation of nano-SiCp/Al–7Si composites
  64. Phase analysis and corrosion behavior of brazing Cu/Al dissimilar metal joint with BAl88Si filler metal
  65. High-efficiency nano polishing of steel materials
  66. On the rheological properties of multi-walled carbon nano-polyvinylpyrrolidone/silicon-based shear thickening fluid
  67. Fabrication of Ag/ZnO hollow nanospheres and cubic TiO2/ZnO heterojunction photocatalysts for RhB degradation
  68. Fabrication and properties of PLA/nano-HA composite scaffolds with balanced mechanical properties and biological functions for bone tissue engineering application
  69. Investigation of the early-age performance and microstructure of nano-C–S–H blended cement-based materials
  70. Reduced graphene oxide coating on basalt fabric using electrophoretic deposition and its role in the mechanical and tribological performance of epoxy/basalt fiber composites
  71. Effect of nano-silica as cementitious materials-reducing admixtures on the workability, mechanical properties and durability of concrete
  72. Machine-learning-assisted microstructure–property linkages of carbon nanotube-reinforced aluminum matrix nanocomposites produced by laser powder bed fusion
  73. Physical, thermal, and mechanical properties of highly porous polylactic acid/cellulose nanofibre scaffolds prepared by salt leaching technique
  74. A comparative study on characterizations and synthesis of pure lead sulfide (PbS) and Ag-doped PbS for photovoltaic applications
  75. Clean preparation of washable antibacterial polyester fibers by high temperature and high pressure hydrothermal self-assembly
  76. Al 5251-based hybrid nanocomposite by FSP reinforced with graphene nanoplates and boron nitride nanoparticles: Microstructure, wear, and mechanical characterization
  77. Interlaminar fracture toughness properties of hybrid glass fiber-reinforced composite interlayered with carbon nanotube using electrospray deposition
  78. Microstructure and life prediction model of steel slag concrete under freezing-thawing environment
  79. Synthesis of biogenic silver nanoparticles from the seed coat waste of pistachio (Pistacia vera) and their effect on the growth of eggplant
  80. Study on adaptability of rheological index of nano-PUA-modified asphalt based on geometric parameters of parallel plate
  81. Preparation and adsorption properties of nano-graphene oxide/tourmaline composites
  82. A study on interfacial behaviors of epoxy/graphene oxide derived from pitch-based graphite fibers
  83. Multiresponsive carboxylated graphene oxide-grafted aptamer as a multifunctional nanocarrier for targeted delivery of chemotherapeutics and bioactive compounds in cancer therapy
  84. Piezoresistive/piezoelectric intrinsic sensing properties of carbon nanotube cement-based smart composite and its electromechanical sensing mechanisms: A review
  85. Smart stimuli-responsive biofunctionalized niosomal nanocarriers for programmed release of bioactive compounds into cancer cells in vitro and in vivo
  86. Photoremediation of methylene blue by biosynthesized ZnO/Fe3O4 nanocomposites using Callistemon viminalis leaves aqueous extract: A comparative study
  87. Study of gold nanoparticles’ preparation through ultrasonic spray pyrolysis and lyophilisation for possible use as markers in LFIA tests
  88. Review Articles
  89. Advance on the dispersion treatment of graphene oxide and the graphene oxide modified cement-based materials
  90. Development of ionic liquid-based electroactive polymer composites using nanotechnology
  91. Nanostructured multifunctional electrocatalysts for efficient energy conversion systems: Recent perspectives
  92. Recent advances on the fabrication methods of nanocomposite yarn-based strain sensor
  93. Review on nanocomposites based on aerospace applications
  94. Overview of nanocellulose as additives in paper processing and paper products
  95. The frontiers of functionalized graphene-based nanocomposites as chemical sensors
  96. Material advancement in tissue-engineered nerve conduit
  97. Carbon nanostructure-based superhydrophobic surfaces and coatings
  98. Functionalized graphene-based nanocomposites for smart optoelectronic applications
  99. Interfacial technology for enhancement in steel fiber reinforced cementitious composite from nano to macroscale
  100. Metal nanoparticles and biomaterials: The multipronged approach for potential diabetic wound therapy
  101. Review on resistive switching mechanisms of bio-organic thin film for non-volatile memory application
  102. Nanotechnology-enabled biomedical engineering: Current trends, future scopes, and perspectives
  103. Research progress on key problems of nanomaterials-modified geopolymer concrete
  104. Smart stimuli-responsive nanocarriers for the cancer therapy – nanomedicine
  105. An overview of methods for production and detection of silver nanoparticles, with emphasis on their fate and toxicological effects on human, soil, and aquatic environment
  106. Effects of chemical modification and nanotechnology on wood properties
  107. Mechanisms, influencing factors, and applications of electrohydrodynamic jet printing
  108. Application of antiviral materials in textiles: A review
  109. Phase transformation and strengthening mechanisms of nanostructured high-entropy alloys
  110. Research progress on individual effect of graphene oxide in cement-based materials and its synergistic effect with other nanomaterials
  111. Catalytic defense against fungal pathogens using nanozymes
  112. A mini-review of three-dimensional network topological structure nanocomposites: Preparation and mechanical properties
  113. Mechanical properties and structural health monitoring performance of carbon nanotube-modified FRP composites: A review
  114. Nano-scale delivery: A comprehensive review of nano-structured devices, preparative techniques, site-specificity designs, biomedical applications, commercial products, and references to safety, cellular uptake, and organ toxicity
  115. Effects of alloying, heat treatment and nanoreinforcement on mechanical properties and damping performances of Cu–Al-based alloys: A review
  116. Recent progress in the synthesis and applications of vertically aligned carbon nanotube materials
  117. Thermal conductivity and dynamic viscosity of mono and hybrid organic- and synthetic-based nanofluids: A critical review
  118. Recent advances in waste-recycled nanomaterials for biomedical applications: Waste-to-wealth
  119. Layup sequence and interfacial bonding of additively manufactured polymeric composite: A brief review
  120. Quantum dots synthetization and future prospect applications
  121. Approved and marketed nanoparticles for disease targeting and applications in COVID-19
  122. Strategies for improving rechargeable lithium-ion batteries: From active materials to CO2 emissions
Downloaded on 11.10.2025 from https://www.degruyterbrill.com/document/doi/10.1515/ntrev-2021-0119/html?lang=en
Scroll to top button