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The cloning, expression and purification of recombinant human neuritin from Escherichia coli and the partial analysis of its neurobiological activity

  • Yuanyuan Li , Juan Tang , Yunhua Zhang , Haiyan Wang , Wumei Yuan , Na Yu , Xing Luo , Xiaoling Xu , Jin Huang EMAIL logo and Lei Yang
Published/Copyright: March 5, 2016
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Abstract

Neuritin (Nrn1) is a neurotrophic factor that plays various roles in neural development and synaptic plasticity. In this study, the NRN1 gene was cloned and expressed in Escherichia coli and then recombinant neuritin protein was purified so that its neurobiological activity could be evaluated. The protein, which was obtained at a concentration of 0.45 mg/ml and > 90% purity, had the predicted molecular weight of 30 kDa, as determined via sodium dodecyl sulfate-polyacrylamide gel electrophoresis. Western blot analysis confirmed that an anti-neuritin antibody could recognize the fusion protein. Subsequent functional analyses revealed that recombinant neuritin promoted neurite outgrowth in embryonic chicken dorsal root ganglia and PC12 cells. These results suggest that recombinant neuritin protein could be a valuable tool for inducing neurite regeneration, for instance in cases of spinal cord injury or neurological diseases.

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Received: 2015-10-6
Accepted: 2015-12-31
Published Online: 2016-3-5
Published in Print: 2015-12-1

© University of Wroclaw, Poland

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