Project description:To portray the molecular mechanism for CTCF function in hESCs, cell treated with siCTCF and siNC were subjected to RNA-seq analysis.
Project description:To portray the molecular mechanism for UBE2I function in hESCs, cell treated with siUBE2I and siNC were subjected to RNA-seq analysis.
Project description:To portray the molecular mechanism for NAT10 function in hESCs, cell treated with siNAT10 and siNC were subjected to RNA-seq analysis.
Project description:Tamoxifen (TAM), used for adjuvant therapy of breast cancer, also increases the risk of endometrial cancer. To compare TAM-induced transcriptional changes we examined human and monkey uterus, as well as cultured normal human mammary epithelial cells (NHMECs) and human endometrial stromal cells (HESCs). Uterine DNA from TAM-exposed women (n=15) and monkeys (Erythrocebus patas n=5, and Macaca fascicularis n=12) showed no difference in 5-methyl-cytosine (5-meC) levels compared to unexposed controls. Studies comparing NHMECs and HESCs exposed to 10 µM TAM for 48 hr showed cell-specific differences by microarray, with confirmation by RT-PCR. In TAM-exposed NHMECs there was significant up-regulation of interferon signaling and immune response pathways, while the TAM-exposed HESCs showed significant up-regulation of steroid and fatty acid biosynthesis pathways. Promoter region CpG islands of several genes highly up-regulated by TAM in each cell type (NHMECs: MX1 and STAT1; HESCs: PPARG, SREBF2, HMCGS and Prune2), were examined for 5-meC, but the levels (≤ 7%), were too low to measure accurately. We also examined several histone H3 lysine dimethylases by Western blot, and showed a significant depletion of total H3 histone, H3K4, H3K27 and H3K36 in TAM-exposed HESCs, with similar but non-significant changes in TAM-exposed NHMECs. Whereas TAM exposure had no discernible effect on 5-meC levels in primate uterus, TAM exposure induced up-regulation of different transcriptional pathways in NHMECs and HESCs, and concomitantly depleted H3 histone lysine dimethylase levels. Therefore, transcriptional dysregulation by TAM, including reduction of histone H3 dimethylase levels, may be related to TAM-induced endometrial carcinogenesis.
Project description:Decidualization is critical for the embryonic implantation and successful pregnancy. ATRA can suppress in-vitro decidualization of human endometrial stromal cells (hESCs) induced by MPA and estrogen treatment. However, the mechanism by which RA suppressed estrogen and progesterone induced decidualization of mESCs is not clear. We used microarrays to investigate the mechanism by which all-trans RA (ATRA) regulates the decidualization of endometrial stroma cells (mESCs).
Project description:Decidualization is critical for the embryonic implantation and successful pregnancy. ATRA can suppress in-vitro decidualization of human endometrial stromal cells (hESCs) induced by MPA and estrogen treatment. However, the mechanism by which RA suppressed estrogen and progesterone induced decidualization of mESCs is not clear. We used microarrays to investigate the mechanism by which all-trans RA (ATRA) regulates the decidualization of endometrial stroma cells (mESCs). mESCs were isolated at day 4 of pseudopregnancy and cultured with administration of E2 and P4 in the presence or absence of ATRA for 72h.
Project description:In IVF treatment, the effects of intrauterine platelet-rich plasma (PRP) infusion with increasing rate of successful pregnancy have been reported; however, the mechanisms that support embryo implantation remain unclear. In the undifferentiated HESCs, PRP was found to strongly promote the gene expression associated with cell growth, tissue regeneration, proinflammatory response, and antibiotic effects. In decidualized HESCs, PRP was found to attenuate the gene expression involved in cell proliferation and inflammation by inhibiting the expression of PI3K signaling.