Project description:we utilized Exiqon miRCURY™ LNA Array (v18.0, Exiqon, Vedbaek, Denmark) to establish miRNA expression profiles in the endometrial tissues at the time of embryo implantation(day 7 after ovulation) from 8 RIF patients and 10 matched controls. A total of 157 miRNAs exhibited distinct expression patterns in RIF patients as opposed to controls (fold change >2.0 and P-value <0.05).
Project description:To compare the lncRNA expression profile of RIF (recurrent implantation failure) and normal control endometrium,endometrium samples were collected at window of implantation (LH+6~10 days) The dysregulated lncRNAs between RIF and control group were deem to be involve in the regulation of endometrium receptivity
Project description:Recurrent implantation failure (RIF) is a challenge in the field of reproductive medicine. The dysfunction of endometrium is one of the pathogenesis of implantation failure. We used microarrays to detail the global programme of gene expression underlying the molecular pathogenesis of implantation failure.
Project description:We aimed to identify altered biological processes in the endometrium that may be potential markers of receptive endometrium. RNA expression profiling of the endometrium during the window of implantation was performed in patients with Recurrent Implantation Failure (RIF) versus fertile controls.
Project description:Purpose:using m6A modified RNA immunoprecipitation sequence (m6A-seq), to establish the m6A methylation transcription profiles in recurrent implantation failure (RIF). Methods: GenSeq® Low Input Whole RNA Library Prep Kit (GenSeq, Inc.) was used to construct RNA libraries for IP and input samples by following the manufacturer's instructions. The library quality was evaluated using Agilent 2100 bioanalyzer and then sequenced in a NovaSeq platform (Illumina 6000). Result:using m6A modified RNA immunoprecipitation sequence (m6A-seq), methylated sites in mRNA,lncRNA and circRNA are identified. Conclusions: Our study revealed the m6A methylation landscape by MERIP sequencing.
Project description:Transcriptomic studies have identified gene expression profiles characteristic of the window of implantation and preliminary studies have indicated that these may be disrupted in some women with recurrent implantation failure (RIF). The aims of this study were to elucidate how the endometrial gene expression profile differs between women with RIF and controls, and to investigate whether a predictor set of genes could be identified able to distinguish between these women.
Project description:The molecular mechanisms underlying window of implantation (WOI) displacement in patients with recurrent implantation failure (RIF) remain unclear. This study aims to explore the transcriptomic signatures of endometrium with normal and displaced WOIs during HRT cycles and to identify the causes of endometrial receptivity (ER) abnormalities and WOI displacement in RIF patients. 40 RIF patients were recruited and underwent personalized embryo transfer (pET) guided by the predicted results of endometrial receptivity diagnosis (ERD) model. Transcriptome analysis of endometrium from patients with clinical pregnancies after pET was performed to identify differentially expressed genes (DEGs) associated with WOI displacement. The ERD results indicated that 67.5% of RIF patients (27/40) were non-receptive in the conventional WOI (P+5) of the HRT cycle. The clinical pregnancy rate in RIF patients improved to 65% (26/40) after ERD-guided pET, indicating the effectiveness of transcriptome-based WOI prediction. Among the 26 patients with clinical pregnancy, the gene expression profiles of P+5 endometrium from advanced (n=6), normal (n=10) and delayed (n=10) WOI groups were significantly different from each other. 10 DEGs (CES4A, LRRC1, SLC25A48, TM4SF4, DPP4, CXCR1, CXCR2, OSM, LCN2 and TNFRSF10C ) identified among P+5 endometrium of 3 groups were involved in immunomodulation, transmembrane transport and tissue regeneration, which could accurately classify the endometrium with different WOIs.
Project description:Transcriptome profile of receptive phase endometrium among infertile women with recurrent implantation failure (RIF) in two different endometrial preparation protocols for FET was analyzed: natural cycle (NC-FET) vs. artificial cycle (AC-FET). Fifteen endometrial biopsy samples were obtained: women with unexplained RIF (n = 5) in natural cycles for FET (NC-FET), women with unexplained RIF undergoing artificial endometrial preparation (n = 5) for FET (AC-FET), and healthy women (n = 5) with proven fertility in natural cycles (NC-FC) (Control group). All endometrial biopsies were obtained during the mid-secretory phase, at the time of ‘window of implantation’.