Growth arrest- and DNA-damage-inducible 45beta gene inhibits c-Jun N-terminal kinase and extracellular signal-regulated kinase and decreases IL-1beta-induced apoptosis in insulin-producing INS-1E cells

Claus Morten Larsen, M G Døssing, S Papa, G Franzoso, N Billestrup, Thomas Mandrup-Poulsen

30 Citationer (Scopus)

Abstract

IL-1beta is a candidate mediator of apoptotic beta cell destruction, a process that leads to type 1 diabetes and progression of type 2 diabetes. IL-1beta activates beta cell c-Jun N-terminal kinase (JNK), extracellular signal-regulated kinase (ERK) and p38, all of which are members of the mitogen-activated protein kinase (MAPK) family. Inhibition of JNK prevents IL-1beta-mediated beta cell destruction. In mouse embryo fibroblasts and 3DO T cells, overexpression of the gene encoding growth arrest and DNA-damage-inducible 45beta (Gadd45b) downregulates pro-apoptotic JNK signalling. The aim of this study was to investigate if Gadd45b prevents IL-1beta-induced beta cell MAPK signalling and apoptosis.
OriginalsprogEngelsk
TidsskriftDiabetologia
Vol/bind49
Udgave nummer5
Sider (fra-til)980-9
Antal sider10
ISSN0012-186X
DOI
StatusUdgivet - 1 maj 2006

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