Potential role of hCG in apoptosis of human luteinized granulosa cells
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- HIRATA Rei
- Laboratory of Reproductive Physiology, Graduate School of Environmental and Life Science, Okayama University, Okayama 700-8530, Japan Okayama Couple’s Clinic, Okayama 701-1152, Japan
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- HOJO Takuo
- Laboratory of Reproductive Physiology, Graduate School of Environmental and Life Science, Okayama University, Okayama 700-8530, Japan
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- SANO Masahiro
- Laboratory of Reproductive Physiology, Graduate School of Environmental and Life Science, Okayama University, Okayama 700-8530, Japan
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- HAYASHI Nobuyoshi
- Okayama Couple’s Clinic, Okayama 701-1152, Japan
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- OKUDA Kiyoshi
- Laboratory of Reproductive Physiology, Graduate School of Environmental and Life Science, Okayama University, Okayama 700-8530, Japan
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抄録
The corpus luteum (CL) forms after ovulation and acts as a temporary endocrine gland that produces progesterone (P4), a hormone that is essential for implantation and maintenance of pregnancy in mammals. In pregnant women, human chorionic gonadotropin (hCG) secreted by the conceptus prevents luteolysis. hCG also increases the survival of cultured human luteinized granulosa cells (hLGCs). To clarify the maintenance mechanism of the human CL, we investigated the effects of hCG and P4 receptor antagonists, onapristone (OP) and RU486, on the viability of hLGCs. With the patients’ consent, hLGCs were isolated from follicular aspirates for in vitro fertilization. The cells were cultured with hCG (0.1, 1, 10, 100 IU/ml), OP (10, 25, 50, 100 μM), RU486 (100 μM), P4 (1, 10, 25, 50 μM) or some combination of the four for 24 h. Cell viability was significantly increased by hCG (100 IU/ml) and significantly decreased by OP (100 μM) compared with the control. Cells treated with hCG and OP together were significantly less viable than the control and OP-treated cells. The combined treatment also significantly increased CASP3 activity and cleaved CASP3 protein expression. Furthermore, P4 addition reversed the reduction in cell viability caused by the combination of hCG and OP treatment. The overall findings suggest that hCG cooperates with P4 to increase survival of hLGCs and to induce apoptosis when P4 action supported by hCG is attenuated in the human CL.
収録刊行物
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- Journal of Reproduction and Development
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Journal of Reproduction and Development 61 (1), 67-73, 2015
公益社団法人 日本繁殖生物学会
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詳細情報 詳細情報について
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- CRID
- 1390001206338286720
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- NII論文ID
- 130004703739
- 40020374323
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- NII書誌ID
- AA10936678
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- ISSN
- 13484400
- 09168818
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- NDL書誌ID
- 026186138
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- PubMed
- 25451535
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
- Crossref
- PubMed
- CiNii Articles
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