Issue |
Med Sci (Paris)
Volume 31, Number 1, Janvier 2015
|
|
---|---|---|
Page(s) | 75 - 83 | |
Section | M/S Revues | |
DOI | https://doi.org/10.1051/medsci/20153101016 | |
Published online | 06 February 2015 |
Les protéines de la famille TSC-22D
De nouveaux régulateurs de l’homéostasie cellulaire ?
TSC-22D proteins: new regulators of cell homeostasis?
1
Université Paris-Sud, Inserm UMR 996, faculté de pharmacie, 5, rue Jean-Baptiste Clément, 92290
Châtenay-Malabry, France
2
Inserm UMR 955, faculté de médecine, 51, avenue du Maréchal de Lattre de Tassigny, 94010
Créteil, France
Les protéines TSC-22D (TGF-β-stimulated clone-22 domain) forment une famille comportant 18 membres à ce jour. Parmi ceux-ci, la protéine GILZ (glucocorticoid-induced leucine zipper), qui possède un rôle de médiateur des effets anti-inflammatoires des glucocorticoïdes et de régulateur de l’inflammation, fait l’objet d’un nombre croissant d’études. TSC-22, quant à elle, apparaît comme un modulateur de l’apoptose et un gène suppresseur de tumeur. Fortement homologues, GILZ et TSC-22 partagent deux domaines très conservés appelés leucine zipper et TSC-box. Les fonctions associées à ces protéines suggèrent un rôle essentiel pour cette famille dans l’homéostasie cellulaire et la régulation du système immunitaire.
Abstract
The GILZ (glucocorticoid-induced leucine zipper) protein has first been identified as a glucocorticoid-responsive gene and is now presented as a major regulator of inflammation. Expanding literature documents a role for GILZ as a mediator of the immuno-modulatory and anti-inflammatory effects of glucocorticoids, mainly through interference with key signal transduction pathways such as nuclear factor-kappa B (NF-kB) or activated protein-1 (AP-1). The TSC-22 (TGF-β-stimulated clone-22) protein is described as an apoptosis modulator and as a new tumor suppressor gene. GILZ and TSC-22, characterized by the presence of a leucine zipper domain and a TSC-box, belong to the TSC-22D (TSC-22 domain) family of proteins which comprises today 18 members. Functions of these proteins suggest that this family plays a major role in cell homeostasis and in the regulation of the immune system.
© 2015 médecine/sciences – Inserm
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