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Evidence for the involvement of Gi2 in activation of extracellular signal-regulated kinases in hepatocytes

Melien, Øyvind; Christoffersen, Thoralf; Sioud, Mouldy
Journal article; PublishedVersion; Peer reviewed
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12860_2001_Article_17.pdf (746.0Kb)
Year
2001
Permanent link
http://urn.nb.no/URN:NBN:no-50759

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  • BioMed Central høstingsarkiv [2293]
  • Institutt for klinisk medisin [5635]
Original version
BMC Cell Biology. 2001 Jul 24;2(1):13., DOI: http://dx.doi.org/10.1186/1471-2121-2-13
Abstract
Background

Activation of the extracellular signal-regulated kinases ERK1 and ERK2 in hepatocytes by prostaglandin (PG)F2α was recently found to be inhibited by pertussis toxin (PTX) suggesting a role for Gi proteins.

Results

Targeting the Gi2α expression by a specific ribozyme inhibited the PGF2α -induced ERK1/2 activation in hepatocytes. On the other hand a non-cleaving form of the Gi2α ribozyme did not significantly decrease the ERK1/2 activation. In ribozyme-treated cells the Gi2α protein level was reduced, while the Gqα level was not affected thus confirming the specificity of the ribozyme.

Conclusion

The present data suggest an important role of Gi2 in PGF2α -induced ERK1/2 signaling in hepatocytes.

© 2001 Melien et al; licensee BioMed Central Ltd. Verbatim copying and redistribution of this article are permitted in any medium for any non-commercial

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