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Tissue factor pathway inhibitor 2 is a potent kallikrein-related protease 12 inhibitor

  • Marion Lavergne ORCID logo EMAIL logo , Audrey Guillon-Munos , Woodys Lenga Ma Bonda , Sylvie Attucci , Thomas Kryza , Aurélia Barascu , Thierry Moreau , Agnès Petit-Courty , Damien Sizaret , Yves Courty , Sophie Iochmann and Pascale Reverdiau EMAIL logo
Published/Copyright: May 12, 2021

Abstract

The protease activities are tightly regulated by inhibitors and dysregulation contribute to pathological processes such as cancer and inflammatory disorders. Tissue factor pathway inhibitor 2 (TFPI-2) is a serine proteases inhibitor, that mainly inhibits plasmin. This protease activated matrix metalloproteases (MMPs) and degraded extracellular matrix. Other serine proteases are implicated in these mechanisms like kallikreins (KLKs). In this study, we identified for the first time that TFPI-2 is a potent inhibitor of KLK5 and 12. Computer modeling showed that the first Kunitz domain of TFPI-2 could interact with residues of KLK12 near the catalytic triad. Furthermore, like plasmin, KLK12 was able to activate proMMP-1 and -3, with no effect on proMMP-9. Thus, the inhibition of KLK12 by TFPI-2 greatly reduced the cascade activation of these MMPs and the cleavage of cysteine-rich 61, a matrix signaling protein. Moreover, when TFPI-2 bound to extracellular matrix, its classical localisation, the KLK12 inhibition was retained. Finally, TFPI-2 was downregulated in human non-small-cell lung tumour tissue as compared with non-affected lung tissue. These data suggest that TFPI-2 is a potent inhibitor of KLK12 and could regulate matrix remodeling and cancer progression mediated by KLK12.


Corresponding authors: Marion Lavergne, Université de Tours, F-37032 Tours, France; and INSERM, Centre d’Etude des Pathologies Respiratoires (CEPR), UMR 1100, 10 boulevard Tonnellé, F-37000 Tours, France, E-mail: ; and Pascale Reverdiau, Université de Tours, F-37032 Tours, France; INSERM, Centre d’Etude des Pathologies Respiratoires (CEPR), UMR 1100, 10 boulevard Tonnellé, F-37000 Tours, France; and Institut Universitaire de Technologie, F-37082 Tours, France, E-mail:

Funding source: Ligue Contre le Cancer

Acknowledgements

We are grateful to Alexandre Lebrun for excellent technical assistance. We particularly thank Laura Smales for editing the English text. Studies conducted by our team were supported by the “Ligue Contre le Cancer” and we especially thank the departmental committees of the French departments Indre et Loire, Morbihan, Maine et Loire, Deux-Sèvres, Indre, and Cher.

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

  2. Research funding: None declared.

  3. Conflict of interest statement: The authors declare no conflicts of interest regarding this article.

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Received: 2020-12-18
Accepted: 2021-04-30
Published Online: 2021-05-12
Published in Print: 2021-09-27

© 2021 Walter de Gruyter GmbH, Berlin/Boston

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