Linked Life Data

7512976

Source:http://linkedlifedata.com/resource/pubmed/id/7512976

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
1994-5-23
pubmed:abstractText
The responsiveness of normal human keratinocytes to different modulators of protein kinase C (PKC) was investigated. The PKC agonist TPA, staurosporine (a non-specific inhibitor), and Ro31-8220 (a specific inhibitor) were studied for effect on cell morphology, growth rate, involucrin expression, and intracellular calcium levels. Surprisingly the response to nanomolar concentrations of staurosporine was similar to TPA and induced a fusiform morphology, inhibited growth, increased involucrin levels, and raised intracellular calcium. Staurosporine also increased the number of cornified envelopes, and its action therefore appeared identical to TPA. In contrast, Ro31-8220 had little effect on morphology or growth and blocked both the TPA-induced growth inhibition and calcium rise. Ro31-8220 had no effect on staurosporine-induced growth inhibition but partially reduced its associated calcium rise. These results suggest PKC activation is required for keratinocyte differentiation and that staurosporine acts like a PKC agonist to give a similar effect as TPA. Specific inhibition of PKC by Ro31-8220 inhibits TPA-induced differentiation.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
May
pubmed:issn
0021-9541
pubmed:author
pubmed:issnType
Print
pubmed:volume
159
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
324-30
pubmed:dateRevised
2007-11-15
pubmed:meshHeading
pubmed:year
1994
pubmed:articleTitle
Staurosporine, a non-specific PKC inhibitor, induces keratinocyte differentiation and raises intracellular calcium, but Ro31-8220, a specific inhibitor, does not.
pubmed:affiliation
Department of Dermatology, University of Liverpool, England.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't