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Updated: Sep 16, 2025

Defining the Program of Maternal mRNA Translation during In vitro Maturation using a Single Oocyte Reporter Assay
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Aging Alters mRNA Processing in the Mouse Ovary.

Kevin Vo1, Grace J Pei1, Ramkumar Thiyagarajan2

  • 1Pathology and Laboratory Medicine, University of Kansas Medical Center, Kansas City, KS 66160, USA.

Cells
|July 11, 2025
PubMed
Summary
This summary is machine-generated.

Ovarian aging impacts female reproductive health by altering gene expression. Focusing on transcript variants, not just genes, reveals more significant molecular changes in aging ovaries.

Keywords:
RNA binding proteinsaginggene expressionovarypre-mRNA processingtranscript variants

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Area of Science:

  • Reproductive biology
  • Molecular genetics
  • Aging research

Background:

  • Female ovarian aging precedes other organ aging and impacts women's health.
  • Ovarian aging involves follicle depletion and decreased oocyte quality, with cellular changes preceding follicle loss.

Purpose of the Study:

  • To investigate the molecular mechanisms of ovarian aging.
  • To analyze gene expression and transcript variant changes in aging mouse ovaries.

Main Methods:

  • RNA sequencing of mouse ovaries at 6 and 12 months of age.
  • Analysis of differentially expressed genes and transcript variants.
  • Focus on regulators of alternative transcription start sites (TSSs) and pre-mRNA processing.

Main Results:

  • Ovarian aging alters expression of epigenetic regulators (ERs), transcription factors (TFs), RNA-binding proteins (RBPs), and spliceosome components (SPs).
  • Transcript variant analysis revealed more pronounced changes than gene expression analysis.
  • Differential expression at the transcript variant level increased significantly for TFs/ERs (8% to 30%) and RBPs (3% to 30%).

Conclusions:

  • Transcript variants play a crucial role in ovarian aging.
  • Focusing on transcript variants offers deeper insights into the molecular processes of ovarian aging.
  • Understanding these changes is vital for addressing women's reproductive health concerns related to aging.