Issue |
Med Sci (Paris)
Volume 31, Number 11, Novembre 2015
|
|
---|---|---|
Page(s) | 989 - 995 | |
Section | M/S Revues | |
DOI | https://doi.org/10.1051/medsci/20153111013 | |
Published online | 17 November 2015 |
L’angiogenèse tumorale
Quand l’arbre de vie tourne mal
Tumor angiogenesis: when the Tree of Life turns bad
1
Institut Cochin, CNRS UMR8104, Inserm U1016, université Paris Descartes, 22, rue Méchain, 75014
Paris, France
2
Centre de recherche en cancérologie Nantes-Angers, CNRS UMR6299, Inserm U892, université de Nantes, 8, quai Moncousu, 44000
Nantes, France
*
julie.gavard@inserm.fr ; julie.gavard@LabSoap
L’angiogenèse correspond à la formation de nouveaux vaisseaux sanguins au cours du développement et chez l’adulte. Les mécanismes moléculaires et cellulaires de ce processus sont piratés au cours de l’angiogenèse tumorale, c’est-à-dire lors de la mise en place d’une vascularisation dédiée à l’irrigation du tissu cancéreux. Cependant, les processus déployés sont particulièrement inefficaces dans un environnement hostile, conduisant à un réseau anormal. Cette synthèse présente un état des connaissances de la formation normale et pathologique des vaisseaux sanguins et décrit comment les aberrations du réseau vasculaire tumoral contribuent à la tumorigenèse et aux échecs de thérapies conventionnelles.
Abstract
Angiogenesis is a highly controlled multistep process that allows the formation of a harmonious vascular network during embryonic development and in adults. In addition, tumor progression also involves a dedicated blood vessel supply to fuel the tumor mass, pirating physiological molecular and cellular mechanisms. However, tumor angiogenesis is a quite inefficient process, as perfusion is not optimal, vessel integrity is not guaranteed, and vessel network is irrationally organized. While fundamental molecular and cellular mechanisms have been the field of intense investigation, anticancer therapies have evolved with the possibility to target tumor angiogenesis. This review presents the different steps involved in the formation of normal and tumor angiogenesis, and how tumor vasculature abnormalities could contribute to tumorigenesis and conventional therapy failure.
© 2015 médecine/sciences – Inserm
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