Project description:We used the microarray analysis to determine the differential gene expression profiles in mouse uterine luminal epithelium between preimplantation gestation day 3.5 and postimplantation gestation day 4.5, and investigeate the molecular mechanism of the establishment of uterine receptivity and embryo implantation. Uterine luminal epithelium (LE) is critical for the establishment of uterine receptivity during embryo implantation. Many genes are known to have differential expression in the periimplantation LE but the global profiling of the altered genes in the periimplantation LE is unknown. To fill in this knowledge gap, microarray analysis was performed in gestation day 3.5 (D3.5, preimplantation) and D4.5 (postimplantation) mouse LE from natural pregnancy. There were 382 significantly upregulated and 245 significantly downregulated genes (>2 fold, P<0.05) in the D4.5 LE. There are 6 samples. 3 for gestation day 3.5 uterine luminal epithelium, the other 3 for gestation day 4.5 uterine luminal epithelium
Project description:We used the microarray analysis to determine the differential gene expression profiles in mouse uterine luminal epithelium between preimplantation gestation day 3.5 and postimplantation gestation day 4.5, and investigeate the molecular mechanism of the establishment of uterine receptivity and embryo implantation. Uterine luminal epithelium (LE) is critical for the establishment of uterine receptivity during embryo implantation. Many genes are known to have differential expression in the periimplantation LE but the global profiling of the altered genes in the periimplantation LE is unknown. To fill in this knowledge gap, microarray analysis was performed in gestation day 3.5 (D3.5, preimplantation) and D4.5 (postimplantation) mouse LE from natural pregnancy. There were 382 significantly upregulated and 245 significantly downregulated genes (>2 fold, P<0.05) in the D4.5 LE.
Project description:Conditional ablation of Indian hedgehog (Ihh) in the murine uterus results in mice that are sterile due to defects in embryo implantation. We performed microarray analysis on these mice at the time point at which the Ihh target genes are induced by the administration of exogenous hormone to mimic day 3.5 of pregnancy. This analysis identified 863 genes altered by the conditional ablation of Ihh. Of these, genes that regulated the cell cycle were overrepresented. In addition, genes involved in epidermal growth factor (EGF) and estrogen (E2) signaling were found to be deregulated upon Ihh ablation. Furthermore, upon conditional ablation of Ihh, 15 month old mice exhibited hallmarks of estrogenized uteri such as cystically dilated glands and hyalinized stroma. Thus, Ihh regulates embryo implantation by impacting the cell cycle, EGF signaling, and E2 signaling. Keywords: two group comparison We conditionally ablated Indian hedgehog in the mouse uterus using the PRcre mouse model (PRcre/+Ihhf/f; Ihhd/d). High density DNA microarray analysis was performed on Day -1 of the artificial decidual response on Ihhf/f and Ihhd/d uteri.
Project description:Comparison of the gene expression profiles of pre-implantation embryos at day 3.5 post coitum from normal pregnant mice (control); embryos from mice treated with ICI (specific estrogen receptor inhibitor); and embryos in the oviduct that were blocked from entering the uterus by ligation. Results provide insight into the function of estrogen regulated genes and uterine factors involved in the early implantation process. RNA were extracted from 3 groups of 100-120 embryos (a) embryos at d3.5 from uterus of normal pregnant mice; (b) embryos at d3.5 from uterus of ICI treated mice; and (c) embryos at d3.5 from the ligated oviduct.
Project description:Conditional ablation of Indian hedgehog (Ihh) in the murine uterus results in mice that are sterile due to defects in embryo implantation. We performed microarray analysis on these mice at the time point at which the Ihh target genes are induced by the administration of exogenous hormone to mimic day 3.5 of pregnancy. This analysis identified 863 genes altered by the conditional ablation of Ihh. Of these, genes that regulated the cell cycle were overrepresented. In addition, genes involved in epidermal growth factor (EGF) and estrogen (E2) signaling were found to be deregulated upon Ihh ablation. Furthermore, upon conditional ablation of Ihh, 15 month old mice exhibited hallmarks of estrogenized uteri such as cystically dilated glands and hyalinized stroma. Thus, Ihh regulates embryo implantation by impacting the cell cycle, EGF signaling, and E2 signaling. Keywords: two group comparison
Project description:To identify genes differentially expressed in the glandless uterus, whole uteri were collected from control (uterine glands present) and PUGKO (no uterine glands) mice at day of pseudopregnancy (DOPP) 3.5 (day DOPP 0.5= vaginal plug). Microarray analysis identified differentially expressed genes in the glandless uteri of PUGKO mice as compared to control mice.