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Integrative analysis of the forkhead box A2 (FOXA2) cistrome for the human endometrium.

ABSTRACT: The pioneer forkhead box (FOX)A2 transcription factor is specifically expressed in the glands of the uterus, which are central to endometrial function and fertility. In mice, FOXA2 is a critical regulator of uterine gland development in the neonate and gland function in the adult. An integrative approach was used here to define the FOXA2 cistrome in the human endometrium. Genome-wide mapping of FOXA2 binding intervals by chromatin immunoprecipitation sequencing was performed using proliferative (P)- and midsecretory (MS)-phase endometrium and integrated with the transcriptome determined by RNA sequencing. Distinctive FOXA2 binding intervals, enriched for different transcription factor binding site motifs, were detected in the P and MS endometrium. Pathway analysis revealed different biologic processes regulated by genes with FOXA2 binding intervals in the P and MS endometrium. Thus, FOXA2 is postulated to regulate gene expression in concert with other transcription factors and impact uterine gland development and function in a cycle phase-dependent manner. Analyses also identified potential FOXA2-regulated genes that influence uterine receptivity, blastocyst implantation, and stromal cell decidualization, which are key events in pregnancy establishment.-Kelleher, A. M., Behura, S. K., Burns, G. W., Young, S. L., DeMayo, F. J., Spencer, T. E. Integrative analysis of the forkhead box A2 (FOXA2) cistrome for the human endometrium.

SUBMITTER: Kelleher AM

PROVIDER: S-EPMC6593875 | biostudies-literature |

REPOSITORIES: biostudies-literature

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Determination of the Forkhead box A2 (FOXA2) Cistrome in the Human Endometrium

Project description:Uterine glands are central to endometrial function and fertility, however the mechanisms regulating their development and function are not well understood. The pioneer forkhead box A2 (FOXA2) transcription factor is distinctively expressed in the glands of the endometrium in both the human and mouse uterus. Studies in mice established that FOXA2 is a critical regulator of gland development in the neonatal uterus as well as differentiated gland function in the adult uterus. An integrative approach was used here to define the FOXA2 cistrome in the human endometrium. Genome-wide mapping of FOXA2 binding sites by chromatin immunoprecipitation sequencing (ChIP-Seq) was performed on proliferative (P) and mid-secretory (MS) phase endometrium and combined with the transcriptome determined by RNA sequencing (RNA-Seq). Distinctive binding of FOXA2 was observed between the P and MS endometrium, and FOXA2 binding intervals were enriched for different transcription factor binding motifs between the phases of endometrium. Pathway analysis revealed different biological processes regulated by FOXA2 bound genes in the P and MS endometrium. Thus, FOXA2 is proposed to regulate gene expression in concert with other transcription factors to influence gland function in a cycle phase-dependent manner. Further analysis identified potential FOXA2 regulated genes that influence endometrial growth, uterine receptivity, and stromal cell decidualization. This analysis of the FOXA2 cistrome provides a foundation essential to understanding fundamental aspects of uterine gland development, differentiation, function, and disease.

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Determination of the Forkhead box A2 (FOXA2) Cistrome in the Human Endometrium [ChIP-seq]

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Determination of the Forkhead box A2 (FOXA2) Cistrome in the Human Endometrium

Project description:Determination of the Forkhead box A2 (FOXA2) Cistrome in the Human Endometrium

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Determination of the Forkhead box A2 (FOXA2) Cistrome in the Human Endometrium [ChIP-seq]

Project description:Determination of the Forkhead box A2 (FOXA2) Cistrome in the Human Endometrium [ChIP-seq]

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Forkhead box a2 (FOXA2) is essential for uterine function and fertility.

Project description:Establishment of pregnancy is a critical event, and failure of embryo implantation and stromal decidualization in the uterus contribute to significant numbers of pregnancy losses in women. Glands of the uterus are essential for establishment of pregnancy in mice and likely in humans. Forkhead box a2 (FOXA2) is a transcription factor expressed specifically in the glands of the uterus and is a critical regulator of postnatal uterine gland differentiation in mice. In this study, we conditionally deleted FOXA2 in the adult mouse uterus using the lactotransferrin Cre (Ltf-Cre) model and in the neonatal mouse uterus using the progesterone receptor Cre (Pgr-Cre) model. The uteri of adult FOXA2-deleted mice were morphologically normal and contained glands, whereas the uteri of neonatal FOXA2-deleted mice were completely aglandular. Notably, adult FOXA2-deleted mice are completely infertile because of defects in blastocyst implantation and stromal cell decidualization. Leukemia inhibitory factor (LIF), a critical implantation factor of uterine gland origin, was not expressed during early pregnancy in adult FOXA2-deleted mice. Intriguingly, i.p. injections of LIF initiated blastocyst implantation in the uteri of both gland-containing and glandless adult FOXA2-deleted mice. Although pregnancy was rescued by LIF and was maintained to term in uterine gland-containing adult FOXA2-deleted mice, pregnancy failed by day 10 in neonatal FOXA2-deleted mice lacking uterine glands. These studies reveal a previously unrecognized role for FOXA2 in regulation of adult uterine function and fertility and provide original evidence that uterine glands and, by inference, their secretions play important roles in blastocyst implantation and stromal cell decidualization.

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Forkhead box protein A2 (FOXA2) protein stability and activity are regulated by sumoylation.

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Sexually dimorphic effects of forkhead box a2 (FOXA2) and uterine glands on decidualization and fetoplacental development.

Project description:Glands of the uterus are essential for pregnancy establishment. Forkhead box A2 (FOXA2) is expressed specifically in the glands of the uterus and a critical regulator of glandular epithelium (GE) differentiation, development, and function. Mice with a conditional deletion of FOXA2 in the adult uterus, created using the lactotransferrin iCre (Ltf-iCre) model, have a morphologically normal uterus with glands, but lack FOXA2-dependent GE-expressed genes, such as leukemia inhibitory factor (LIF). Adult FOXA2 conditional knockout (cKO; Ltf iCre/+ Foxa2 f/f ) mice are infertile due to defective embryo implantation arising from a lack of LIF, a critical implantation factor of uterine gland origin. However, intraperitoneal injections of LIF can initiate embryo implantation in the uterus of adult FOXA2 cKO mice with pregnancies maintained to term. Here, we tested the hypothesis that FOXA2-regulated genes in the uterine glands impact development of the decidua, placenta, and fetus. On gestational day 8.5, the antimesometrial and mesometrial decidua transcriptome was noticeably altered in LIF-replaced FOXA2 cKO mice. Viable fetuses were reduced in FOXA2 cKO mice on gestational days 12.5 and 17.5. Sex-dependent differences in fetal weight, placenta histoarchitecture, and the placenta and metrial gland transcriptome were observed between control and FOXA2 cKO mice. The transcriptome of the placenta with a female fetus was considerably more altered than the placenta with a male fetus in FOXA2 cKO dams. These studies reveal previously unrecognized sexually dimorphic effects of FOXA2 and uterine glands on fetoplacental development with potential impacts on offspring health into adulthood.

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Project description:In this study, we investigated the effects of ablation of uterine Forkhead Box A2 (Foxa2) on gene expression of fetal brain relative to placenta. Using a conditional knockout mouse model for uterine Foxa2, here we show that the lack of uterine Foxa2 elicits a sexually-conflicting transcriptional response in the fetal brain relative to placenta. The ablation of Foxa2 in the uterus altered expression of genes related to growth, nutrient sensing, aging, longevity and angiogenesis among others. In the wildtype mice, these genes were expressed higher in the fetal brain and placenta of males compared to females. However, in mice lacking uterine Foxa2, the same genes showed the opposite pattern i.e., higher expression in the fetal brain and placenta of females compared to males. Based on the known marker genes of mice placenta and fetal brain cells, we further predicted that the genes exhibiting the sexually conflicting expression were associated with vascular endothelial cells. Overall, our study suggests that uterine Foxa2 plays a role in the regulation of the brain-placental axis by influencing the fetoplacental vascular changes during pregnancy.

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Upregulated forkhead-box A3 elevates the expression of forkhead-box A1 and forkhead-box A2 to promote metastasis in esophageal cancer.

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Sexually dimorphic effects of forkhead box a2 (FOXA2) and uterine glands on decidualization and fetoplacental development

Project description:Glands of the uterus are essential for the establishment of pregnancy in mice, sheep and likely humans. Forkhead box a2 (FOXA2) is expressed specifically in the glands of the uterus and a critical regulator of glandular epithelium (GE) differentiation, development and function. Mice with a conditional deletion of FOXA2 in the adult uterus, created using the lactotransferrin iCre (Ltf-iCre) model, have a morphologically normal uterus with glands, but lack a considerable number of FOXA2-dependent GE-expressed genes. Adult FOXA2 conditional knockout (cKO; Ltf-iCre:Foxa2 flox) mice are infertile due to defective embryo implantation arising from a lack of leukemia inhibitory factor (LIF), a critical implantation factor of uterine gland origin. Intraperitoneal injections of LIF can initiate embryo implantation in the uterus of adult FOXA2 cKO mice with pregnancies maintained to term. Here, we tested the hypothesis that FOXA2-regulated genes in the uterine glands impact development of the decidua, placenta and fetus. On gestational day (GD) 8.5, the anti-mesometrial and mesometrial decidua transcriptome was noticeably altered in FOXA2 cKO mice. Viable fetuses were reduced in FOXA2 cKO mice on GDs 12.5 and 17.5. Sex-dependent differences in fetal weight, placenta histoarchitecture, and the placenta and metrial gland transcriptome were observed between control and FOXA2 cKO mice. The transcriptome of the placenta with a female fetus was considerably more altered than the placenta with a male fetus in FOXA2 cKO dams. These studies reveal previously unrecognized sexually dimorphic effects of FOXA2 and uterine glands on fetoplacental development with potential impacts on offspring health into adulthood.

2020-07-09 | GSE154026 | GEO

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