Abstract
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 knock-down 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.
Original language | English (US) |
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Title of host publication | American Journal of Translational Research |
Pages | 390-402 |
Number of pages | 13 |
Volume | 4 |
Edition | 4 |
State | Published - 2012 |
Keywords
- Breast cancer
- Estrogen receptors
- G-1
- G15
- GPR30/GPER
- Ovarian cancer
ASJC Scopus subject areas
- Medicine(all)
- Cancer Research
- Clinical Biochemistry
- Molecular Medicine