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Propriétés anti-angiogéniques et anti-migratoires de peptides transmembranaires ciblant le complexe neuropiline-1/plexine-A1 dans le glioblastome

Abstract : This thesis work continues the exploration of the therapeutic potential using peptides targeting transmembrane (TM) domains of receptors involved in tumor growth. I showed the anti-angiogenic effect of MTP-NRP1, a peptide targeting Neuropilin-1 and confirmed its capability to impact proliferation, migration and in vivo growth of a human glioblastoma (GBM) cell line. Then, I demonstrated that the expression of Plexin-A1 is correlated with glioma aggressiveness and seems to be a bad prognosis marker for GBM patients. We described the importance of PlexA1 TM domain in the control of their interactions. The peptide MTP-PlexA1 inhibits complex formation and signaling of NRP1-PlexA1, impacts tumor growth in vivo and cancer stem cells engrafting and development. I demonstrated the pro-angiogenic role of PlexA1 with in vitro angiogenesis assays and CAM assay in which MTP-PlexA1 is able to block this function.
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Laurent Jacob. Propriétés anti-angiogéniques et anti-migratoires de peptides transmembranaires ciblant le complexe neuropiline-1/plexine-A1 dans le glioblastome. Biologie moléculaire. Université de Strasbourg, 2013. Français. ⟨NNT : 2013STRAJ064⟩. ⟨tel-01124237⟩

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