Control of oocyte release by progesterone receptor-regulated gene expression

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Control of oocyte release by progesterone receptor-regulated gene expression

The progesterone receptor (PGR) is a nuclear receptor transcription factor that is essential for female fertility, in part due to its control of oocyte release from the ovary, or ovulation. In all mammals studied to date, ovarian expression of PGR is restricted primarily to granulosa cells of follicles destined to ovulate. Granulosa cell expression of PGR is induced by the pituitary Luteinizing...

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The steroid hormone progesterone (P) plays a pivotal role in the establishment and maintenance of pregnancy. The well-known function of P during early pregnancy is to regulate (i) uterine receptivity for blastocyst attachment, (ii) progressive phases of embryo-uterine interactions, and (iii) differentiation of the endometrial stroma that maintains an environment conducive for the growth and dev...

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Progesterone inhibits apoptosis in part by PGRMC1-regulated gene expression.

Progesterone receptor membrane component-1 (PGRMC1) is present in both the cytoplasm and nucleus of spontaneously immortalized granulosa cells (SIGCs). PGRMC1 is detected as a monomer in the cytoplasm and a DTT-resistant PGRMC1 dimer in the nucleus. Transfected PGRMC1-GFP localizes mainly to the cytoplasm and does not form a DTT-resistant dimer. Moreover, forced expression of PGRMC1-GFP increas...

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Control of ovulation in mice by progesterone receptor-regulated gene networks.

The mid-cycle surge of luteinizing hormone (LH) induces ovulation, a process during which a fertilizable oocyte is released from a mature ovarian follicle. Although ovulation is a physiologically well-characterized event, the underlying molecular pathways remain poorly understood. Progesterone receptor (PGR), which mediates the biological effects of the steroid hormone progesterone, has emerged...

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Regulation of progesterone receptor gene expression.

The levels of progesterone receptor (PR) mRNA, PR protein, and [3H]R5020 binding activity were measured in parallel experiments conducted on a T47D subline expressing the estrogen receptor. A significant increase of PR mRNA levels could be detected within 6 h of exposure of the cells to estradiol (10(-8) M). The changes in mRNA, however, did not lead to any variation of PR protein levels of [3H...

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ژورنال

عنوان ژورنال: Nuclear Receptor Signaling

سال: 2009

ISSN: 1550-7629,1550-7629

DOI: 10.1621/nrs.07012