Characterization of pro-invasive mechanisms and N-terminal cleavage of ANXA1 in melanoma - Unité de Nutrition Humaine Accéder directement au contenu
Article Dans Une Revue Archives of Dermatological Research Année : 2014

Characterization of pro-invasive mechanisms and N-terminal cleavage of ANXA1 in melanoma

Zied Boudhraa
  • Fonction : Auteur
Christophe Merle
  • Fonction : Auteur
Jean Michel Chezal
Elisabeth Miot-Noirault
  • Fonction : Auteur
  • PersonId : 941843
Manfred Theisen
  • Fonction : Auteur
Bernadette Bouchon
  • Fonction : Auteur
Françoise Degoul
  • Fonction : Auteur

Résumé

Annexin A1 deregulation is often associated with cancer. Indeed we have shown that annexin A1 is overexpressed in melanoma and promotes metastases by formyl peptide receptor stimulation and MMP2 expression. Here, we demonstrated in different melanoma cell lines that annexin A1-MMP2 induction is mediated by MAPK and STAT3 pathways. To decipher endogenous annexin A1 action mode, we showed that annexin A1 is externalized in A375 cells and cleaved by a membrane-associated serine protease, allowing the release of a pro-invasive annexin A1 peptide in the extra cellular environment. Finally, a biochemical and proteomic approach allowed to enrich eight out of 12 members of the annexin family and to identify an original annexin A1 cleavage site localized between Ser(28) and Lys(29). Altogether, these data identify signaling pathways involved in annexin A1 pro-invasive role and suggest that externalized full-length annexin A1 interacts with formyl peptide receptors in a juxtacrine manner while ANXA 2-28 release allows autocrine and paracrine interaction.
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Dates et versions

hal-01123212 , version 1 (04-03-2015)

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Zied Boudhraa, Christophe Merle, Dominique Mazzocut, Jean Michel Chezal, Christophe Chambon, et al.. Characterization of pro-invasive mechanisms and N-terminal cleavage of ANXA1 in melanoma. Archives of Dermatological Research, 2014, 306 (10), pp.903-914. ⟨10.1007/s00403-014-1517-z⟩. ⟨hal-01123212⟩
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