ABSTRACT: Differential gene expression profiling of endometrium during the mid-luteal phase of the estrous cycle between repeat breeder and normal fertile cows
Project description:We investigated differential gene expression profiles of endometrium during the mid-luteal phase of the estrous cycle between repeat breeding (RB) and normally fertilized cows using microarray analysis. Caruncular (CAR) and intercaruncular (ICAR) endometrium of both ipsilateral and contralateral uterine horns to the corpus luteum were collected from RB (inseminated at least three times but not pregnant) and normally fertile cows on Day 15 of the estrous cycle. Global gene expression profiles of these endometrial samples were analyzed with a 15K custom-made oligo-microarray in cattle. Microarray analysis revealed that 405 and 397 genes were differentially expressed in CAR and ICAR of the ipsilateral uterine horn of RB, respectively when compared with normal cows. In contralateral uterine horn, 443 and 257 differentially expressed genes were identified in the CAR and ICAR of RB, respectively when compared with normal cows. In the analysis of whole uterine (combining the above four portions), RB cows showed up-regulation of 37 genes including PRSS2, GSTA3, PIPOX, CNGA1 and IGG1C and down-regulation of 39 genes including CHGA, KRT35, THBS4, CPXM2 and PRF1 compared with normal cows. Our results may suggest that local regulation of molecular mechanisms in each uterine portion contributes to normal uterine physiology.
Project description:The aim of the study was to investigate the influence of chemerin on the transcriptomic profile of porcine in vitro cultured luteal cells collected during the mid-luteal phase of estrous cycle.
Project description:To test if cell states within the endometrium are spatially organized, we performed spatial transcriptomics on 8 mid-luteal phase superficial endometrial biopsies.
Project description:The corpus luteum plays a critical role in reproduction because it is the primary source of circulating progesterone. This study aimed to determine the in vitro effect of peroxisome proliferator-activated receptor gamma (PPARγ) ligands on the transcriptome genes expression in the porcine corpus luteum in the mid- and late-luteal phase of the estrous cycle using RNA-seq technology. The corpus luteum slices were incubated in vitro in the presence of PPARγ agonist – pioglitazone and antagonist—T0070907. We identified 40 differentially expressed genes after pioglitazone treatment and 40 after T0070907 treatment in the mid-luteal phase as well as 26 after pioglitazone and 29 after T0070907 treatment in late-luteal phase of the estrous cycle. In addition, we detected differences in genes expression between the mid- and late-luteal phase without treatment (409). These results should become a basis for further studies explaining the mechanism of PPARγ action in the reproductive system in pigs.
Project description:In order to try and identify characteristics of gene expression in the endometrium of women suffering infertility or recurrenty miscarriage, we performed RNAseq on endometrial pipelle biopsies from 20 women. The endometrial transcriptome in the mid-luteal phase of the cycle (window of implantation) is highly divergent in women suffering infertility or miscarriages. 20 mid-luteal endometrial biopsies were analysed from infertile women and patients suffering recurrent pregnancy loss.
Project description:We present the transcriptome analysis by RNA sequencing of endometrial B cells identifying potential B cell phenotypes and function in human endometrium during the mid-luteal phase. To achieve this, endometrial B cells were isolated from 15 endometrial biopsies, and cDNA library preparation was performed for RNA sequencing.
Project description:The fate of the human endometrium is determined during the mid-luteal window of implantation, a crucial period when endometrial stromal cells (EnSCs) differentiate into specialized decidual cells. Upon embryo implantation, these differentiating EnSCs transform the endometrium into the decidua of pregnancy. Conversely, in the absence of pregnancy, decreasing progesterone levels trigger tissue breakdown, leading to menstruation. Despite our understanding of these processes, the precise mechanisms governing this tissue transformation remain elusive. To bridge this knowledge gap, we conducted single-cell RNA sequencing, mapping the transcriptomic profiles of timed endometrial biopsies throughout the luteal phase of the menstrual cycle.
Project description:In order to try and identify characteristics of gene expression in the endometrium of women suffering infertility or recurrenty miscarriage, we performed RNAseq on endometrial pipelle biopsies from 20 women. The endometrial transcriptome in the mid-luteal phase of the cycle (window of implantation) is highly divergent in women suffering infertility or miscarriages.
Project description:In both beef and dairy cattle, the majority of embryo loss occurs in the first 14 days following insemination. During this period, the embryo is completely dependent on its maternal uterine environment for development, growth and ultimately survival, therefore an optimum uterine environment is critical to embryo survival. We used microarrays to assess endometrial gene expression in high and low fertility heifers during the mid-luteal phase of the estrous cycle.
