Title : Requirements of focal adhesions and calcium fluxes for interleukin-1-induced ERK kinase activation and c-fos expression in fibroblasts.

Pub. Date : 1998 Mar 20

PMID : 9507015






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1 Requirements of focal adhesions and calcium fluxes for interleukin-1-induced ERK kinase activation and c-fos expression in fibroblasts. Calcium interleukin 1 alpha Homo sapiens
2 Previous studies in our laboratory showed that IL-1-induced calcium flux is dependent on focal adhesion formation, suggesting a matrix-dependent restriction system for IL-1 signaling. Calcium interleukin 1 alpha Homo sapiens
3 Previous studies in our laboratory showed that IL-1-induced calcium flux is dependent on focal adhesion formation, suggesting a matrix-dependent restriction system for IL-1 signaling. Calcium interleukin 1 alpha Homo sapiens
4 Plating cells on poly-L-lysine prevented focal adhesion formation, eliminated IL-1-induced calcium influx, abolished ERK stimulation, and blocked c-fos expression. Calcium interleukin 1 alpha Homo sapiens
5 Calcium depletion abolished IL-1-induced calcium uptake, ERK activation, and c-fos expression. Calcium interleukin 1 alpha Homo sapiens
6 Calcium depletion abolished IL-1-induced calcium uptake, ERK activation, and c-fos expression. Calcium interleukin 1 alpha Homo sapiens
7 In transfection studies, IL-1 stimulation of serum responsive element (SRE) transcriptional activity was dependent on the presence of extracellular calcium. Calcium interleukin 1 alpha Homo sapiens
8 Our results demonstrate that in cells attached to substrates by focal adhesions, IL-1-mediated calcium flux is required for ERK activation and c-fos expression but not for JNK or p38 activation. Calcium interleukin 1 alpha Homo sapiens