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Expression data of siRNA interfere men1 expression in N2a cell line

ABSTRACT: Expression data of siRNA interfere men1 expression in N2a cell line

PROVIDER: PRJNA474622 | ENA |

REPOSITORIES: ENA

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Expression data of siRNA interfere men1 expression in N2a cell line

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Expression data from Men1 knockout MEFs

Project description:Multiple endocrine neoplasia type1 (MEN1), an inherited autosomal dominant syndrome characterized by the development of endocrine tumors including NETs, results from mutation in the MEN1 gene that encodes the protein menin. In mouse models, heterozygous loss of Men1 leads to multiple endocrine tumors with loss of heterozygocity at the Men1 locus. Men1 interacts with several partners to regulate cellular processes and gene expression through regulating histone modification. We used microarrays to detail the global gene expression change in Men1 knockout MEFs and identified up-regulated genes during this process.

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Project description:Multiple endocrine neoplasia type 1 (MEN1) syndrome is the result of mutations in the MEN1 gene and results in tumor formation via mechanisms that are not well understood. Using a novel genome-wide methylation analysis, we studied tissues from patients with MEN1-parathyroid tumors, tissues from Men1 knockout (KO) mouse models, and mouse Men1 null mouse embryonic fibroblast (MEF) cell lines. Tissues from KO mice were used to confirm and assess the findings from the MEN1 clinical samples and further explore the molecular mechanisms of global epigenetic changes following the inactivation of menin. We demonstrated that the inactivation of menin results in enhanced activity of DNA (cytosine-5)-methyltransferase 1 (DNMT1) by retinoblastoma-binding protein 5 (Rbbp5) activation in MEN1 tumor tissues. The increased activity of DNMT1 mediated global DNA hypermethylation, which in turn resulted in aberrant activation of the Wnt/Î²-catenin signaling pathway through inactivation of Sox regulatory genes. Our study provides important insights into the possible regulatory role of menin in DNA methylation and its impact on the pathogenesis of MEN1 tumor development. Global DNA methylation in tissues from patients with MEN1-parathyroid tumors. Thirty-eight human parathyroid specimens were used: 13 sporadic (non-MEN1) parathyroid adenomas, 12 MEN1-parathyroid tumors, 4 parathyroid carcinomas, and 9 normal parathyroids.

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miRNA sequencing of exosomes derived from N2A and APP-N2A cells

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miRNA sequencing of exosomes derived from N2A and APP-N2A cells

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