Document Detail

Phorbol ester-like action of staurosporine on the cAMP response to prostaglandin E2 in two macrophage-like cell lines at distinct differentiation stages.
MedLine Citation:
PMID:  1329902     Owner:  NLM     Status:  MEDLINE    
The purpose of this study is to investigate the involvement of protein kinase C (PKC) in prostaglandin E2 (PGE2)-stimulated cAMP production of two macrophage-like cell lines (G3 and XC). XC cells are thought to be placed at a more differentiated stage than G3 cells [Orikasa et al. (1991) Cell Immunol. 132, 350-365]. In RPMI 1640 containing 10% (v/v) heat-inactivated foetal calf serum (FCS), in which the cAMP response of both cells to PGE2 increased with duration of culture, XC cells showed greater response than G3 cells at 2 days of culture. In alpha-minimum essential medium (alpha-MEM) containing 20% (v/v) heat-inactivated horse serum (HS), the cAMP response of both cells was apparently greater than that in RPMI 1640 containing 10% (v/v) FCS. These cells increased cAMP production also in response to PGE1 and PGF2 alpha, and the order of potency in increase was PGE1 > PGE2 >> PGF2 alpha. Interestingly, a short-term (20 min) treatment with phorbol 12-myristate 13-acetate (PMA), a direct activator of PKC or staurosporine, a relatively specific inhibitor of PKC, augmented the PGE2-stimulated cAMP production in these cells cultured in alpha-MEM containing 20% (v/v) HS. However, a long-term (24 h) treatment with these compounds did not alter the cAMP response. In G3 cells, PMA appeared more potent than staurosporine in terms of augmentation, whereas in XC cells, the former appeared less potent than the latter.(ABSTRACT TRUNCATED AT 250 WORDS)
T Kawase; M Orikasa; A Suzuki
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Cellular signalling     Volume:  4     ISSN:  0898-6568     ISO Abbreviation:  Cell. Signal.     Publication Date:  1992 Sep 
Date Detail:
Created Date:  1992-12-18     Completed Date:  1992-12-18     Revised Date:  2007-11-15    
Medline Journal Info:
Nlm Unique ID:  8904683     Medline TA:  Cell Signal     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  479-85     Citation Subset:  IM    
Department of Pharmacology, Niigata University School of Dentistry, Japan.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Alkaloids / pharmacology*
Cell Differentiation
Cell Line
Culture Media
Cyclic AMP / biosynthesis*
Dinoprostone / pharmacology*
Macrophages / cytology,  drug effects,  metabolism
Protein Kinase C / antagonists & inhibitors,  metabolism
Tetradecanoylphorbol Acetate / pharmacology
Reg. No./Substance:
0/Alkaloids; 0/Culture Media; 16561-29-8/Tetradecanoylphorbol Acetate; 363-24-6/Dinoprostone; 60-92-4/Cyclic AMP; 62996-74-1/Staurosporine; EC Kinase C

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

Previous Document:  Inhibition of platelet aggregation by the cAMP-phosphodiesterase inhibitor, cilostamide, may not be ...
Next Document:  Rapid priming of calcium mobilization and superoxide anion production in human neutrophils by substi...