Issue |
Med Sci (Paris)
Volume 19, Number 6-7, Juin-Juillet 2003
|
|
---|---|---|
Page(s) | 709 - 716 | |
Section | M/S Revues | |
DOI | https://doi.org/10.1051/medsci/20031967709 | |
Published online | 15 June 2003 |
La protéine kinase CK2, une enzyme qui cultive la différence
Protein kinase CK2: an enzyme that likes to be different
Inserm EMI 104, Département Réponse et Dynamique Cellulaire, CEA Grenoble, 38054 Grenoble Cedex 9, France
La perte des mécanismes de contrôle de la progression du cycle de division cellulaire ou du déclenchement des processus d’apoptose permet aux cellules d’acquérir des propriétés décisives pour leur transformation tumorale. Plusieurs protéine kinases participent à la transduction de signaux qui neutralisent des composants de la machinerie apoptotique. Dans ce contexte, la protéine kinase CK2 (caséine kinase 2), dont la structure vient d’être élucidée, apparaît comme un régulateur déterminant pour la viabilité cellulaire. Il est concevable que la surexpression de la CK2 observée dans les cancers puisse conduire à la formation de signaux de survie contribuant à la tumorigenèse.
Abstract
Protein kinase CK2 (formerly known as casein kinase 2) was among the first protein kinases to be identified and characterized. Surprisingly, in spite of intense efforts, the regulation and cellular functions of CK2 remain obscure. However, recent data on its molecular structure, its signal-mediated intracellular dynamic localization and its unexpected function in cell survival have raised new interest in this enzyme. These studies reveal unique features of CK2 and highlight its importance in the transduction of survival signals.
© 2003 médecine/sciences - Inserm / SRMS
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