Lebectin, a novel C-type lectin from Macrovipera lebetina venom, inhibits integrin-mediated adhesion, migration and invasion of human tumour cells. - Archive ouverte HAL Access content directly
Journal Articles Laboratory Investigation Year : 2004

Lebectin, a novel C-type lectin from Macrovipera lebetina venom, inhibits integrin-mediated adhesion, migration and invasion of human tumour cells.

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Abstract

The adhesion receptors of the integrin family play an essential role during tumour progression and thus represent interesting potential targets for the development of new therapeutic agents. The snake venom contains natural inhibitors of integrin-ligand interactions called disintegrins. It also contains C-type lectin proteins mainly known as modulators of platelet aggregation. In this study, we demonstrate that lebectin, a novel C-type lectin isolated from Macrovipera lebetina venom, displayed an anti-integrin activity. Lebectin inhibited the integrin-mediated attachment of various tumour cell lines to different adhesion substrata. The C-type lectin also completely blocked cell migration towards fibronectin in haptotaxis assays and prevented invasion of fibrin gels by tumour cells. In addition, lebectin proved to be a potent inhibitor of tumour cell proliferation. Although the specific integrins affected by lebectin are not identified in this study, the integrin alpha 5 beta 1 might be involved.

Dates and versions

pasteur-00875524 , version 1 (22-10-2013)

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Cite

Sameh Sarray, Virginie Berthet, Juan J Calvete, Jeannine Secchi, Jacques Marvaldi, et al.. Lebectin, a novel C-type lectin from Macrovipera lebetina venom, inhibits integrin-mediated adhesion, migration and invasion of human tumour cells.. Laboratory Investigation, 2004, 84 (5), pp.573-81. ⟨10.1038/labinvest.3700088⟩. ⟨pasteur-00875524⟩
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