title: Endothelin-1 gene expression and biosynthesis in human endometrial HEC-1A cancer cells.
abstract: In this study, evidence was obtained that endothelin-1 (ET-1) is produced by an established endometrial cancer (HEC-1A) cell line. PreproET-1 mRNA is present in HEC-1A cells, and immunoreactive endothelin is secreted into the medium of these cells maintained in culture. Cycloheximide treatment of these cells caused superinduction of preproET-1 mRNA. Transforming growth factor-beta acts in these cells to increase the levels of preproET-1 mRNA. This effect of transforming growth factor-beta on preproET-1 mRNA accumulation was accompanied by an increase in the amount of immunoreactive endothelin secreted into the culture medium. ET-1, added to the culture medium, did not act as a mitogen in HEC-1A cells. We speculate that ET-1 (which is known to stimulate fibroblast proliferation) produced by endometrial adenocarcinoma cells may participate in the angiogenic process that occurs during the establishment of this carcinoma in vivo.
authors.affiliation: Cecil H. and Ida Green Center for Reproductive Biology Sciences, University of Texas Southwestern Medical Center, Dallas 75235-9051.
authors.forename: K
authors.initials: K
authors.lastname: Economos
authors.forename: P C
authors.initials: PC
authors.lastname: MacDonald
authors.forename: M L
authors.initials: ML
authors.lastname: Casey
mesh_terms: D000230:Adenocarcinoma; D004261:DNA Replication / Q000187:drug effects; D004273:DNA, Neoplasm / Q000096:biosynthesis; D016889:Endometrial Neoplasms; D019332:Endothelin-1; D016232:Endothelins / Q000096:biosynthesis / Q000235:genetics* / Q000494:pharmacology; D004815:Epidermal Growth Factor / Q000494:pharmacology; D005260:Female; D005346:Fibroblast Growth Factors / Q000494:pharmacology; D015870:Gene Expression; D006801:Humans; D007328:Insulin / Q000494:pharmacology; D007375:Interleukin-1 / Q000494:pharmacology; D007700:Kinetics; D010982:Platelet-Derived Growth Factor / Q000494:pharmacology; D011498:Protein Precursors / Q000235:genetics*; D012333:RNA, Messenger / Q000032:analysis / Q000235:genetics / Q000378:metabolism*; D016212:Transforming Growth Factor beta / Q000494:pharmacology
chemical_list: D004273:DNA, Neoplasm; D019332:Endothelin-1; D016232:Endothelins; D007328:Insulin; D007375:Interleukin-1; D010982:Platelet-Derived Growth Factor; D011498:Protein Precursors; D012333:RNA, Messenger; D016212:Transforming Growth Factor beta; D005346:Fibroblast Growth Factors; D004815:Epidermal Growth Factor