The putative G-protein coupled estrogen receptor agonist G-1 suppresses proliferation of ovarian and breast cancer cells in a GPER-independent manner

American Journal of Translational Research

Cheng Wang¹ 

关键词: GPR30/GPER;    G-1;    G15;    ovarian cancer;    breast cancer;    estrogen receptors;   

DOI  :  

学科分类：医学（综合）

来源: e-Century Publishing Corporation

【 摘 要 】

G-protein coupled estrogen receptor 1 (GPER) plays an important role in mediating estrogen action in many different tissues under both physiological and pathological conditions. G-1 (1-[4-(6-bromobenzo[1,3]dioxol-5yl)-3a,4,5,9b-tetrahydro-3H-cyclopenta [c]quinolin-8-yl]-ethanone) has been developed as a selective GPER agonist to distinguish estrogen actions mediated by GPER from those mediated by classic estrogen receptors. In the present study, we surprisingly found that G-1 suppressed proliferation and induced apoptosis of KGN cells (a human ovarian granulosa cell tumor cell line), actions that were not blocked by a selective GPER antagonist G15 or siRNA knockdown of GPER. G-1 also suppressed proliferation and induced cell apoptosis in GPER-negative HEK-293 cells and MDA-MB 231 breast cancer cells. Our results demonstrate that G-1 suppresses proliferation of ovarian and breast cancer cells in a GPER-independent manner. G-1 may be a candidate for the development of drugs against ovarian and breast cancer.

【 授权许可】

CC BY-NC