Regulation of cytosolic phospholipase A2 in rat endometrial stromal cells: the role of epidermal growth factor.
The effect of epidermal growth factor on the levels of cytosolic phospholipase A2 mRNA and protein in cultured rat endometrial stromal cells isolated from uteri sensitized for the decidual cell reaction was examined. Treatment with epidermal growth factor increased the steady-state cytosolic phospholipase A2 mRNA and protein levels as demonstrated by Northern and Western blot analyses, respectively. Immunocytochemical analysis demonstrated an increase of cytosolic phospholipase A2 protein in most cells, as opposed to a small subpopulation of cells in culture. These results show that epidermal growth factor causes an increase in steady-state cytosolic phospholipase A2 mRNA and protein levels in rat endometrial stromal cells from uteri sensitized for the decidual cell reaction. Epidermal growth factor receptor ligands may regulate cytosolic phospholipase A2 and thus prostaglandin production in the endometrial stromal cells during implantation.
Bany
B M
BM
Department of Physiology, University of Western Ontario, London, Ontario, Canada.
Schultz
G A
GA
Kennedy
T G
TG
D000704:Analysis of Variance; D000818:Animals; D002478:Cells, Cultured; D003600:Cytosol / Q000201:enzymology; D004717:Endometrium / Q000166:cytology*; D004815:Epidermal Growth Factor / Q000494:pharmacology / Q000502:physiology*; D005260:Female; D015971:Gene Expression Regulation, Enzymologic / Q000187:drug effects; D010741:Phospholipases A / Q000235:genetics* / Q000378:metabolism; D054467:Phospholipases A2; D014176:Protein Biosynthesis; D012333:RNA, Messenger / Q000378:metabolism; D051381:Rats; D017207:Rats, Sprague-Dawley; D020133:Reverse Transcriptase Polymerase Chain Reaction; D017154:Stromal Cells / Q000166:cytology / Q000201:enzymology; D014158:Transcription, Genetic
D012333:RNA, Messenger; D004815:Epidermal Growth Factor; D010741:Phospholipases A; D054467:Phospholipases A2