Antiapoptotic role of PPARbeta in keratinocytes via transcriptional control of the Akt1 signaling pathway.
Détails
ID Serval
serval:BIB_825F64E21639
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Institution
Titre
Antiapoptotic role of PPARbeta in keratinocytes via transcriptional control of the Akt1 signaling pathway.
Périodique
Molecular Cell
ISSN
1097-2765[print], 1097-2765[linking]
Statut éditorial
Publié
Date de publication
2002
Volume
10
Numéro
4
Pages
721-733
Langue
anglais
Notes
Publication types: Journal Article Publication Status: ppublish
Résumé
Apoptosis, differentiation, and proliferation are cellular responses which play a pivotal role in wound healing. During this process PPARbeta translates inflammatory signals into prompt keratinocyte responses. We show herein that PPARbeta modulates Akt1 activation via transcriptional upregulation of ILK and PDK1, revealing a mechanism for the control of Akt1 signaling. The resulting higher Akt1 activity leads to increased keratinocyte survival following growth factor deprivation or anoikis. PPARbeta also potentiates NF-kappaB activity and MMP-9 production, which can regulate keratinocyte migration. Together, these results provide a molecular mechanism by which PPARbeta protects keratinocytes against apoptosis and may contribute to the process of skin wound closure.
Mots-clé
Animals, Anoikis/drug effects, Apoptosis/drug effects, Blotting, Western, Cell Line, Electrophoretic Mobility Shift Assay, Gene Expression Regulation, Growth Substances/metabolism, Humans, Keratinocytes/cytology, Keratinocytes/metabolism, Matrix Metalloproteinase 9/biosynthesis, Mice, NF-kappa B/metabolism, Protein-Serine-Threonine Kinases/biosynthesis, Protein-Serine-Threonine Kinases/genetics, Proto-Oncogene Proteins, Proto-Oncogene Proteins c-akt, RNA, Messenger/genetics, RNA, Messenger/metabolism, Receptors, Cytoplasmic and Nuclear/metabolism, Signal Transduction, Transcription Factors/metabolism, Tumor Necrosis Factor-alpha/pharmacology
Pubmed
Web of science
Open Access
Oui
Création de la notice
24/01/2008 15:26
Dernière modification de la notice
20/08/2019 14:42