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NLRP14 deficiency contributes to female infertility and early embryo arrest

ABSTRACT: NLRP14 deficiency contributes to female infertility and early embryo arrest

PROVIDER: PRJNA979177 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR24806618_1.fastq.gz	Fastqsanger.gz
	SRR24806618_2.fastq.gz	Fastqsanger.gz
	SRR24806619_1.fastq.gz	Fastqsanger.gz
	SRR24806619_2.fastq.gz	Fastqsanger.gz
	SRR24806620_1.fastq.gz	Fastqsanger.gz

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NLRP14 deficiency contributes to female infertility and early embryo arrest

Project description:Oocyte maturation is vital to attain full competence required fertilization and embryogenesis. As a maternal effect factor, NLRP14 is preferentially expressed in mammalian oocytes and early embryos. Yet the role and molecular mechanism of NLRP14 in oocyte maturation and early embryogenesis is largely unknown. Whether NLRP14 deficiency accounts for human infertility with oocyte and embryo defects remains to be elucidated. Here, NLRP14 is identified essential for establishment of competent oocytes that can sustain early embryo development. Maternal deficiency of Nlrp14 results in sterility characterized by oocyte maturation defects and early embryo arrest. Nlrp14 ablation leads to compromised oocyte quality and developmental competence due to impaired oocyte cytoplasmic and nuclear maturation. Mechanistically, NLRP14 interacts with UHRF1 in oocyte cytoplasm to protect it from proteasome-dependent degradation, and perturbs maternal mRNA zygotic-decay and zygotic genome activation during maternal-zygotic transition. Furthermore, compound heterozygous pathogenic variants in NLRP14 gene are identified in infertile women with early embryonic arrest, which interrupt the NLRP14-UHRF1 interaction or UHRF1 protein expression. Our data uncover a vital role of NLRP14 as a new cytoplasmic-specific modulator of UHRF1 in oocyte meiotic maturation and early embryogenesis, which should provide new insights into risk prediction and genetic diagnosis for female infertility.

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Expression profiling of mouse ing2 -/- mice with spermatogenic arrest and infertility

Project description:Expression profiling of mouse ing2 -/- testis vs WT reveals gene expression differences consistent with spermatogenic arrest and infertility. Ing2 is indispensable for male germ cell development in mice. While mice deficient for Ing2 were born and grew without apparent abnormalities, male, but not female, were infertile, consistent with the highest expression of Ing2 in testes in wild-type mice and in humans. Histological and DNA content analyses in Ing2-/- testes revealed a spermatogenesis arrest at meiotic phase and enhanced apoptosis associated with increased p53, resulting in a decline in mature spermatozoa, which became more severe in older age. HDAC1 accumulation and core histone deacetylation at pachytene stage were impaired in Ing2-/- testes, suggesting that the recruitment of HDAC1 by Ing2 plays a critical role in spermatogenesis. This study establishes Ing2 as a novel mammalian regulator of spermatocyte differentiation, which coordinates spermatogenesis stage-specific histone modifications. This study has implications in understanding human male infertility. Testis from WT and Ing2 KO mice at 2-3 months of age where analyzed for differences in gene expression.

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