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MBD-seq in ovarian tissues of prenatally androgenized (PNA) mice

ABSTRACT: MBD-seq in ovarian tissues of prenatally androgenized (PNA) mice

PROVIDER: PRJNA659665 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR12532336_1.fastq.gz	Fastqsanger.gz
	SRR12532336_2.fastq.gz	Fastqsanger.gz
	SRR12532337_1.fastq.gz	Fastqsanger.gz
	SRR12532337_2.fastq.gz	Fastqsanger.gz
	SRR12532338_1.fastq.gz	Fastqsanger.gz

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MBD-seq in ovarian tissues of prenatally androgenized (PNA) mice

Project description:To investigate the molecular mechanism of PCOS underlying the hyperandrogenic phenotype, prenatally androgenized (PNA) mice were used to mimic this phenotype in women with PCOS. Methylated DNA binding domain sequencing (MBD-seq) and RNA-seq were performed on PNA mice (n=6) and control group (n=4) and validations were applied on ovarian samples from PNA mice (n=6) and control group (n=6) using MSP (methylation-specific PCR) and qPCR. The immunohistochemistry (IHC) and transmission electron microscope (TEM) profiling was separately conducted on tissue sections and granular cells of PNA mice (n=6) and control group (n=6). We identified 857 genes with differently methylated promoters and 3317 differently expressed genes in PNA mice and control group. We found that PCOS group had a down-regulation of Dnmt1 gene expression, accompanied by global hypomethylation compared with the control group. The promoter regions of Map3k1(mitogen-activated protein kinase kinase kinase 1) and Map1lc3ka (microtubule-associated protein1 light chain 3) were hypomethylated, accompanied by up-regulation of their mRNA expression, which may be involved in the regulation of PCOS through MAPK/p53 pathway activition and autophagy alteration.

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Ovaries of PNA mice and controls

Project description:To investigate the etiology of the hyperandrogenic phenotype of polycystic ovary syndrome (PCOS), a prenatally androgenized (PNA) mouse model was validated and used for microarray analysis.

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miRNA-seq in ovarian tissues of prenatally androgenized (PNA) mice

Project description:To investigate the molecular mechanisms of miRNA-mRNA expression underlying this phenotype, ovarian samples from PNA and control mice were subjected to microRNA-seq and RNA-seq. Differential expression analyses were carried out to identify differentially expressed microRNAs (DEmiRs) and differentially expressed genes (DEGs). Target genes of DEmiRs were predicted by miRTarbase and visualization by Cytoscape. Functional annotation and pathway enrichment analyses for the DEGs and target genes were performed through the DAVID database. Then, to reveal the interactions involved in the pathogenesis of PCOS, the integrated analysis of miRNA-mRNA was performed in PNA mice vs. controls and granulosa cells (GCs) of PCOS women vs. health women. Protein–protein interaction (PPI) networks were established for these negatively regulated pairs via the STRING database. The expression and correlation of potential miRNAs and targets were further validated using RT-qPCR in more PNA mice and clinical human granulosa cells.

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Ovarian tissues of prenatally androgenized (PNA) mice

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