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DNA methylation and Transcriptional profiling of Nlrp5 +/+, and -/- and germinal vesical murine oocytes

ABSTRACT: This SuperSeries is composed of the SubSeries listed below.

ORGANISM(S): Mus musculus

PROVIDER: GSE278144 | GEO | 2025/12/30

REPOSITORIES: GEO

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DNA methylation profiling of Nlrp5 +/+, and -/- and germinal vesical murine oocytes

Project description:Nlrp5 encodes a core component of the subcortical maternal complex (SCMC) a cytoplasmic protein structure unique to the mammalian oocyte and cleavage-stage embryo. NLRP5 mutations have been identified in patients presenting with early embryo arrest, recurrent molar pregnancies and imprinting disorders. Correct patterning of DNA methylation over imprinted domains during oogenesis is necessary for faithful imprinting of genes. It was previously shown that oocytes with mutations in the human SCMC gene KHDC3L had globally impaired methylation, suggesting a role for the SCMC in the establishment of DNA methylation at imprinted regions. Here, we present a multi-omic analysis of an Nlrp5-null mouse model, which displays a global misregulation of maternal proteins in Nlrp5-null oocytes, likely underlying oocyte developmental incompetence. We also show that de novo DNA methylation is altered in Nlrp5-null oocytes, and that epigenetic modifiers such as DNMT3L are significantly reduced. This provides evidence for mechanisms leading to downstream misregulation of imprinted genes, which in turn, may result in imprinting syndromes, multi-locus imprinting disturbances (MLID), and hydatidiform moles.

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DNA methylation and Transcriptional profiling of Nlrp5 +/+, and -/- and germinal vesical murine oocytes

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Transcriptional profiling of Nlrp5 +/+, -/- and +/- germinal vesical murine oocytes

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