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Uterine glands synchronize embryo-endometrial interactions and coordinate on-time embryo implantation and stromal cell decidualization for pregnancy success

ABSTRACT: Uterine glands synchronize embryo-endometrial interactions and coordinate on-time embryo implantation and stromal cell decidualization for pregnancy success

PROVIDER: PRJNA449921 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR6994050_1.fastq.gz	Fastqsanger.gz
	SRR6994050_2.fastq.gz	Fastqsanger.gz
	SRR6994060_1.fastq.gz	Fastqsanger.gz
	SRR6994060_2.fastq.gz	Fastqsanger.gz
	SRR6994070_1.fastq.gz	Fastqsanger.gz

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Uterine glands synchronize embryo-endometrial interactions and coordinate on-time embryo implantation and stromal cell decidualization for pregnancy success

Project description:By employing FOXA2-deficient mouse models coupled with LIF repletion, we reveal definitive roles of uterine glands in pregnancy establishment.These studies provide original evidence that uterine glands synchronize embryo-endometrial interactions, coordinate on-time embryo implantation, and impact stromal cell decidualization, thereby ensuring embryo viability, placental growth, and pregnancy success.

2018-04-13 | GSE113065 | GEO

Uterine glands coordinate on-time embryo implantation and impact endometrial decidualization for pregnancy success.

Project description:Uterine glands are essential for pregnancy establishment. By employing forkhead box A2 (FOXA2)-deficient mouse models coupled with leukemia inhibitory factor (LIF) repletion, we reveal definitive roles of uterine glands in embryo implantation and stromal cell decidualization. Here we report that LIF from the uterine glands initiates embryo-uterine communication, leading to embryo attachment and stromal cell decidualization. Detailed histological and molecular analyses discovered that implantation crypt formation does not involve uterine glands, but removal of the luminal epithelium is delayed and subsequent decidualization fails in LIF-replaced glandless but not gland-containing FOXA2-deficient mice. Adverse ripple effects of those dysregulated events in the glandless uterus result in embryo resorption and pregnancy failure. These studies provide evidence that uterine glands synchronize embryo-endometrial interactions, coordinate on-time embryo implantation, and impact stromal cell decidualization, thereby ensuring embryo viability, placental growth, and pregnancy success.

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Endometrial extracellular vesicle decidualization

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Sperm modulate uterine immune parameters relevant to embryo implantation and reproductive success

Project description:Sperm modulate uterine immune parameters relevant to embryo implantation and reproductive success

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Sperm modulate uterine immune parameters relevant to embryo implantation and reproductive success

Project description:Seminal fluid factors modulate the female immune response at conception to facilitate embryo implantation and reproductive success. Whether sperm affect this response has not been clear. We evaluated global gene expression by microarray in the mouse uterus after mating with intact or vasectomized males. Intact males induced greater changes in gene transcription, prominently affecting pro-inflammatory cytokine and immune regulatory genes, with TLR4 signaling identified as a top-ranked upstream driver. Recruitment of neutrophils and expansion of peripheral regulatory T cells were elevated by seminal fluid of intact males. In vitro, epididymal sperm induced IL6, CXCL2, and CSF3 in uterine epithelial cells of wild-type, but not Tlr4 null females. Collectively these experiments show that sperm assist in promoting female immune tolerance by eliciting uterine cytokine expression through TLR4-dependent signaling. The findings indicate a biological role for sperm beyond oocyte fertilization, in modulating immune mechanisms involved in female control of reproductive investment. We used microarrays to detail the global programme of gene expression in mice following exposure to different components of seminal fluid

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Project description:Extracellular vesicles (EVs) are important mediators of embryo attachment and outgrowth critical for successful implantation. While EVs have garnered immense interest in their therapeutic potential in assisted reproductive technology by improving implantation success, their large-scale generation remains a major challenge. Here, we report a rapid and scalable production of nanovesicles (NVs) from human trophectoderm cells (hTSCs) via membrane extrusion; these NVs can be generated in approximately 6 hours with a 20-fold higher yield than EVs isolated from the same number of cells. NVs display similar biophysical traits (morphologically intact, spherical, 90-130 nm) to EVs, and are laden with hallmark players of implantation (ITGA2/V, ITGB1, PRDX1, SOD2, and MFGE8) that include cell-matrix adhesion and extracellular matrix organisation proteins. Functionally, NVs are readily taken up by low-receptive endometrial HEC1A cells and reprogram their proteome towards a receptive phenotype that support hTSC spheroid attachment. Moreover, a single dose treatment of NVs significantly enhanced adhesion and spreading of mouse embryo trophoblast on fibronectin matrix. We show functional potential of NVs in enhancing embryo implantation and highlight their rapid and scalable generation, amenable to clinical utility.

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Single-cell sequencing reveals a delicate molecular and cellular interaction during decidualization in humans

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