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MicroRNA Expression Profiles in Follicular Fluid Exosomes of Women with Different Ovarian Reserve

ABSTRACT: MicroRNA Expression Profiles in Follicular Fluid Exosomes of Women with Different Ovarian Reserve

PROVIDER: PRJNA998263 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR25411200.fastq.gz	Fastqsanger.gz
	SRR25411201.fastq.gz	Fastqsanger.gz
	SRR25411202.fastq.gz	Fastqsanger.gz
	SRR25411203.fastq.gz	Fastqsanger.gz
	SRR25411204.fastq.gz	Fastqsanger.gz

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MicroRNA Expression Profiles in Follicular Fluid Exosomes of Women with Different Ovarian Reserve

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Project description:Polycystic ovary syndrome (PCOS) is a complex endocrinopathy affecting reproductive aged women, whose etiology has not been fully understood yet. The follicular growth is arrested at preantral stage leading to cyst formation, consequently resulting in anovulatory infertility in these women. As follicular fluid provides the microenvironment for the growing oocyte, molecular profiling of the fluid may provide unique information about pathophysiology associated with follicular development in PCOS. Modification with oligosaccharide chains are known to influence functions of several secreted proteins and these glycoproteins also play a role in disease pathology. The glycoproteomic profile of follicular fluid of PCOS has not been explored in PCOS yet. In the present study, we performed comparative glycoproteomic analysis by first enriching glycoproteins using three different lectins viz. concanavalin A, wheat germ agglutinin and Jacalin from follicular fluid of women with PCOS and controls undergoing in vitro fertilization. Peptides generated by trypsin digestion were labeled with isobaric tags for relative and absolute quantification reagents and analyzed by liquid chromatography tandem mass spectrometry. We identified 10 differentially expressed glycoproteins, in the follicular fluid of women with PCOS compared to control. Two important differentially expressed proteins- SERPINA1 and ITIH4, were consistently upregulated and downregulated respectively, upon validation by Western blotting in follicular fluid and real-time polymerase chain reaction in granulosa cells. These proteins play a role in angiogenesis and extracellular matrix stabilization which are vital for follicle maturation. In conclusion, comparative glycoprotein profiling of follicular fluid from women with PCOS and controls revealed altered expression of proteins which may contribute to defects in follicle development in PCOS pathophysiology.

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miRNAs in follicular fluid

Project description:Our aim with this work is to identify and quantify the miRNA profile of the human follicular fluid using a miRNA microarray approach in young and advanced-aged women and in follicles with different oocyte quality. Data collected in this study would be utilized in a future as a marker to predict the oocyte quality. This observational prospective study includes women enrolled in the assisted reproduction program of Hospital Universitari i Politècnic la Fe (Valencia, Spain). The study was accepted by IRB of this Hospital and all couples received informed consent of our study and assisted technique according to service protocols. The study was divided in two stages: Stage 1: Patients (n=21) who had follicles yielding oocytes with different degree of maturation were included (n=21). The follicular fluid samples from 21 patients were pooled in different groups. Expression of miRNA in the follicular fluids was compared within each patient according the degree of oocyte maturation. Stage 2: Patients were allocated into two groups according to the patient's age: advanced age (AA; >36 years old) and young age (YA; <36 years old). Follicular fluids from follicles containing MII oocytes were pooled and miRNA expression was subsequently compared. Please note that the MII samples with underscore (such as MII1 vs MII_1) indicate different pools so they are not the same sample, but we maintained the number because they correspond to paired samples pools for GV and MI.

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