Activation of ERK and p38 MAP kinases in human fibroblasts during collagen matrix contraction

David J. Lee, Hans Rosenfeldt, Frederick Grinnell

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Studies were carried out to characterize changes in MAP kinase activation during contraction of collagen matrices by fibroblasts under isometric tension. We found that both ERK and p38 MAP kinases were activated during contraction, as determined by immuno-blotting and in vitro kinase assays. ERK activation was biphasic, with peaks at 10 min and 2 h; whereas p38 activation was monophasic, with a single peak at 10 min. Activation of ERK, but not p38, appeared to depend at least in part on the G(i) class of heterotrimeric G proteins. The results show that ERK and p38 cooperate in contraction-stimulated activation of c-fos transcription. (C) 2000 Academic Press.

Original languageEnglish (US)
Pages (from-to)190-197
Number of pages8
JournalExperimental Cell Research
Issue number1
StatePublished - May 25 2000



  • G protein
  • Mechanoregulation
  • Signaling
  • Wound
  • c-fos

ASJC Scopus subject areas

  • Cell Biology

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