Reproductive Biology and Fertility

Maturation of cortical endoplasmic reticulum clusters in the mouse oocyte: changes at fertilization.

This study shows that sperm-oocyte interactions cause global and localized changes in cortical ER cluster structure during fertilization in mice.

TAF4b transcription networks regulating early oocyte differentiation

This study identifies TAF4b-regulated transcription networks in mouse oocytes, revealing its role in meiosis, chromatin structure, and X-linked gene expression.

Germline-soma Supply Mitochondria for mtDNA Inheritance in Mouse Oogenesis

The paper shows that mouse oocytes receive mitochondria from germline-soma via transzonal nanotubes, contributing to mtDNA inheritance and oogenesis.

Human embryos arrest in a quiescent-like state characterized by metabolic and zygotic genome activation problems

This study identifies a quiescent-like state in arrested IVF embryos and shows that modulating metabolic pathways can rescue the arrest.

Variation of female pronucleus reveal oocyte or embryo abnormality: An expert experience deep learning of non-dark box analysis

The paper develops a deep learning method to quantify pronuclear (PN) features in embryos and links PN area to chromosomal abnormalities using clinical data.

ESR2 regulates indian hedgehog signaling in neonatal rat ovary

This study identifies ESR2 as a regulator of Indian hedgehog signaling in neonatal rat ovaries, showing its role in controlling primordial follicle activation.

Integrated analyses of the single-cell ATAC-seq and RNA-seq reveal the epigenetic landscape of human ovarian aging

This study integrates single-cell ATAC-seq and RNA-seq to reveal the epigenetic and transcriptional changes in human ovarian aging, identifying key pathways and a predictive model for oocyte aging.

Parental genomes segregate into different blastomeres during multipolar zygotic divisions leading to mixoploid and chimeric blastocysts

Superovulation does not alter calcium oscillations following fertilization

This study tests whether superovulation affects calcium oscillations in fertilized eggs and finds no differences in calcium signaling patterns between superovulated and naturally cycling mice.

Autologous mitochondria transport via transzonal filopodia rejuvenates aged oocytes by UC-MSCs derived granulosa cells-oocyte aggregation

This paper describes a method using autologous mitochondria from UC-MSCs to rejuvenate aged oocytes through granulosa cell-oocyte aggregation and transzonal filopodia-mediated transfer, improving oocyte maturation and developmental potential.

Vitrifying multiple embryos in different arrangements does not alter the cooling rate

This study models the cooling of embryos on a vitrification device, finding that spatial arrangement and sample number do not significantly affect cooling rates when cryoprotectant volume is minimal.

Production of functional oocytes requires maternally expressed PIWI genes and piRNAs in golden hamsters

This study shows that PIWI genes and piRNAs are essential for producing functional oocytes in golden hamsters, with different effects on gene expression and DNA methylation depending on the PIWI gene.

piRNA pathway is essential for generating functional oocytes in golden hamster

This study shows that piRNAs are essential for generating functional oocytes in golden hamsters, with defects leading to sterility and embryonic arrest.

PRMT5 regulates ovarian follicle development by facilitating Wt1 translation

This study shows PRMT5 promotes ovarian follicle development by enhancing Wt1 translation through methylation of HnRNPA1, leading to proper granulosa cell function and fertility.

Metabolic Plasticity drives Development during Mammalian Embryogenesis

This study investigates how metabolic plasticity drives mammalian embryogenesis by analyzing metabolic shifts during preimplantation stages in mouse embryos.

Progesterone receptor-A isoform interaction with RUNX transcription factors controls chromatin remodelling at promoters during ovulation

The paper identifies a PGR-A isoform-RUNX interaction that drives chromatin remodelling at promoters during ovulation, revealing a mechanism for ovulation-specific gene regulation.

Altered germline cyst and oocyte differentiation in Tex14 mutant mice reveal a new mechanism underlying female reproductive life-span

This study shows that Tex14 mutant mice have altered germline cysts and oocyte differentiation, linking germ cell connectivity to oocyte cytoplasmic enrichment and adult reproductive lifespan.

Single cell analysis reveals the impact of age and maturation stage on the human oocyte transcriptome

This study analyzes the transcriptomes of human oocytes at different maturation stages and finds that age affects specific gene pathways in matured oocytes.

Self-activation of Wnt signaling in pre-granulosa cells is required for ovarian folliculogenesis

This study shows that Wnt signaling in pre-granulosa cells is essential for follicle activation and oocyte maturation, with a two-step model involving self-activation of Wnt and subsequent support of oocyte reawakening.

Spatiotemporal transcriptional dynamics of the cycling mouse oviduct

The paper analyzes the spatiotemporal gene expression patterns in the mouse oviduct across the estrous cycle and anteroposterior axis, finding stable transcriptional dynamics across the cycle.

Granulosa cell genes that regulate ovarian follicle development beyond the antral stage: the role of estrogen receptor β

The paper identifies ERβ-regulated genes in granulosa cells that are essential for ovarian follicle maturation beyond the antral stage, revealing both known and novel genes involved in this process.

Control of fluid flow by Adgrd1 is essential for mammalian oviductal embryo transport

This study shows that Adgrd1 regulates oviductal fluid flow and embryo transport in mice, with its absence causing infertility due to impaired embryo release from the ampullary-isthmic junction.

ERβ regulated ovarian kisspeptin plays an important role in oocyte maturation

The paper investigates the role of ovarian KISS1 signaling in oocyte maturation and shows that ERβ regulates KISS1 expression in granulosa cells, which is essential for gonadotropin-induced oocyte maturation.

Codon composition in human oocytes reveals age-associated defects in mRNA decay

This study shows that codon composition affects mRNA stability and protein abundance in human oocytes, with age-related changes in these associations impacting oocyte quality.

Tdrd3 regulates the progression of meiosis II through translational control of Emi2 mRNA in mouse oocytes

This study identifies Tdrd3 as a regulator of meiosis II in mouse oocytes by controlling Emi2 mRNA translation, ensuring proper MII spindle formation.

Single cell RNA sequencing reveals regulation of fetal ovary development in the monkey (Macaca fascicularis)

This study uses single-cell RNA sequencing to analyze fetal ovary development in monkeys, identifying key cellular processes and gene expression patterns in germ cells.

A small increase in CHEK1 activity leads to the arrest of the first zygotic division in human

The paper shows that a small increase in CHEK1 activity causes arrest of the first zygotic division in human embryos, with implications for assisted reproduction.

Harnessing cytoplasmic particles movement of the human early embryo analysed by advanced imaging and artificial intelligence to predict development to blastocyst stage

This paper uses AI and imaging to analyze cytoplasmic movement in early human embryos to predict blastocyst development, showing improved accuracy when combining AI with expert assessment.

Mechanical and signaling mechanisms that guide pre-implantation embryo movement.

The paper identifies mechanical and signaling mechanisms guiding embryo movement and spacing in mice, showing that implantation sites are not random but influenced by embryo number and communication.

A missense in HSF2BP causing Primary Ovarian Insufficiency affects meiotic recombination by its novel interactor C19ORF57/MIDAP

The paper identifies a missense variant in HSF2BP linked to POI, showing it impairs meiotic recombination by affecting its interaction with MIDAP and reducing recombinase activity.