TRIIODOTHYRONINE INDUCES A TRANSFERABLE FACTOR WHICH SUPPRESSES TSH SECRETION IN CULTURED MOUSE THYROTROPIC TUMOR-CELLS

被引：17
|
作者：
MELMED, S
PARK, J
HERSHMAN, JM
机构：
[1] VET ADM WADSWORTH HOSP CTR, MED CTR, RES SERV, LOS ANGELES, CA 90073 USA
[2] UNIV CALIF LOS ANGELES, DEPT MED, LOS ANGELES, CA 90024 USA
来源：
BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS | 1981年 / 98卷 / 04期
关键词：
D O I：
10.1016/0006-291X(81)91213-4
中图分类号：
Q5 [生物化学]; Q7 [分子生物学];
学科分类号：
071010 ; 081704 ;
摘要：
Modulation of TSH [thyroid stimulating hormone] release from mouse thyrotropic tumor cells was studied. T3 [Triiodothyronine] (1 nM) inhibited basal TSH release, while 6 nM T3 blocked TRH[thyroliberin]-induced TSH release. Prior exposure of cells to actinomycin or cycloheximide prevented T3 from suppressing basal and TRH-induced TSH release. The TSH-suppressive activity from T3-treated cells was extracted and exposure of untreated thyrotropic cells to this material suppressed TSH release. T3 suppression of TSH may be mediated by formation of an inhibitory protein in thyrotropic cells.
引用
收藏
页码：1022 / 1028
页数：7
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