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Lebecin, a new C-type lectin like protein from Macrovipera lebetina venom with anti-tumor activity against the breast cancer cell line MDA-MB231.

Abstract : C-type lectins like proteins display various biological activities and are known to affect especially platelet aggregation. Few of them have been reported to have anti-tumor effects. In this study, we have identified and characterized a new C-type lectin like protein, named lebecin. Lebecin is a heterodimeric protein of 30 kDa. The N-terminal amino acid sequences of both subunits were determined by Edman degradation and the entire amino acid sequences were deduced from cDNAs. The precursors of both lebecin subunits contain a 23-amino acid residue signal peptide and the mature α and β subunits are composed of 129 and 131 amino acids, respectively. Lebecin is shown to be a potent inhibitor of MDA-MB231 human breast cancer cells proliferation. Furthermore, lebecin dose-dependently inhibited the integrin-mediated attachment of these cells to different adhesion substrata. This novel C-type lectin also completely blocked MDA-MB231 cells migration towards fibronectin and fibrinogen in haptotaxis assays.
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https://hal-riip.archives-ouvertes.fr/pasteur-01060316
Contributor : Institut Pasteur Tunis <>
Submitted on : Wednesday, September 3, 2014 - 1:54:47 PM
Last modification on : Tuesday, February 26, 2019 - 12:18:02 PM

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Jed Jebali, Emna Fakhfekh, Maram Morgen, Najet Srairi-Abid, Hafedh Majdoub, et al.. Lebecin, a new C-type lectin like protein from Macrovipera lebetina venom with anti-tumor activity against the breast cancer cell line MDA-MB231.. Toxicon, Elsevier, 2014, 86, pp.16-27. ⟨10.1016/j.toxicon.2014.04.010⟩. ⟨pasteur-01060316⟩

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