共查询到20条相似文献,搜索用时 31 毫秒
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SMRTe, a silencing mediator for retinoid and thyroid hormone receptors-extended isoform that is more related to the nuclear receptor corepressor
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Park EJ Schroen DJ Yang M Li H Li L Chen JD 《Proceedings of the National Academy of Sciences of the United States of America》1999,96(7):3519-3524
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Jeong JW Lee KY Han SJ Aronow BJ Lydon JP O'Malley BW DeMayo FJ 《Endocrinology》2007,148(9):4238-4250
The role of the p160 steroid receptor coactivator 2 (SRC-2) in the regulation of uterine function and progesterone (P4) signaling was investigated by determining the expression pattern of SRC-2 in the murine uterus during pregnancy and the impact of SRC-2 ablation on uterine function and global uterine gene expression in response to progesterone. SRC-2 is expressed in the endometrial luminal and glandular epithelium from pregnancy d 0.5. SRC-2 is then expressed in the endometrial stroma on pregnancy d 2.5-3.5. Once the embryo is implanted, SRC-2 is expressed in the endometrial stromal cells in the secondary decidual zone. This compartmental expression of SRC-2 can be mimicked by treatment of ovariectomized mice with estrogen and P4. Ablation of SRC-2 in the uterus resulted in a significant reduction in the ability of the uterus to undergo a hormonally induced decidual reaction. Microarray analysis of RNA from uteri of wild-type and SRC-2(-/-) mice treated with vehicle or P4 showed that SRC-2 was involved in the ability of progesterone to repress specific genes. This microarray analysis also revealed that the uteri of SRC-2(-/-) mice showed alterations in genes involved in estrogen receptor, Wnt, and bone morphogenetic protein signaling. This analysis indicates that SRC-2 regulates uterine function by modulating the regulation of developmentally important signaling molecules and the ability of P4 to repress specific genes. 相似文献
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Roles of steroid receptor coactivator (SRC)-1 and transcriptional intermediary factor (TIF) 2 in androgen receptor activity in mice
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Ye X Han SJ Tsai SY DeMayo FJ Xu J Tsai MJ O'Malley BW 《Proceedings of the National Academy of Sciences of the United States of America》2005,102(27):9487-9492
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p300/CBP-associating factor (PCAF) is a ligand-dependent coactivator, whereas receptor-interacting protein 140 (RIP140) is a ligand-dependent negative coregulator for retinoic acid (RA) receptor (RAR) and retinoid X receptor (RXR). To compare these molecular interactions and to determine the effect of RXR ligands, we focus on PCAF/RAR/RXR complex formation in this study for a comparison to RIP140/RAR/RXR complex formation. The LBD of RXR is identified as its primary PCAF-interacting motif. BIAcore studies determine the Kd of RAR/RXR association with PCAF as 9.35 nM in the presence of RXR ligand AGN194204, and 47.2 nM in the absence of ligand. Cross-linking study demonstrates tri-molecular complex consisting of one RAR/RXR pair and one PCAF. In competition experiments, RIP140 strongly competes with PCAF for interaction with RAR/RXR both in vitro and in vivo. Chromatin immunoprecipitation demonstrates recruitment of RIP140 and PCAF to the endogenous RA-regulated gene, the RARbeta2 promoter. This study presents kinetic evidence for competition of RIP140 with PCAF for ligand-dependent interactions with RAR/RXR, and provides kinetic explanation for the suppressive activity of RIP140 in RA-activated gene expression. 相似文献