Antiapoptotic role of PPARbeta in keratinocytes via transcriptional control of the Akt1 signaling pathway.
Details
Serval ID
serval:BIB_825F64E21639
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Antiapoptotic role of PPARbeta in keratinocytes via transcriptional control of the Akt1 signaling pathway.
Journal
Molecular Cell
ISSN
1097-2765[print], 1097-2765[linking]
Publication state
Published
Issued date
2002
Volume
10
Number
4
Pages
721-733
Language
english
Notes
Publication types: Journal Article Publication Status: ppublish
Abstract
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.
Keywords
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
Yes
Create date
24/01/2008 15:26
Last modification date
20/08/2019 14:42