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Related Experiment Video

Updated: Jun 19, 2026

Mouse Oocyte Microinjection, Maturation and Ploidy Assessment
07:03

Mouse Oocyte Microinjection, Maturation and Ploidy Assessment

Published on: July 23, 2011

Dcp1-bodies in mouse oocytes.

Adam Swetloff1, Beatrice Conne, Joachim Huarte

  • 1Department of Genetic Medicine and Development, Faculty of Medicine, University of Geneva, 1211 Geneva 4, Switzerland.

Molecular Biology of the Cell
|October 9, 2009
PubMed
Summary
This summary is machine-generated.

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Processing bodies (P-bodies) are key for mRNA regulation. In mouse oocytes, novel P-body-like structures called Dcp1-bodies form and disappear during maturation, indicating a role in oocyte gene expression control.

Area of Science:

  • Cell Biology
  • Molecular Biology
  • Developmental Biology

Background:

  • Processing bodies (P-bodies) are cytoplasmic granules regulating mRNA fate.
  • P-body components are found in germ cell granules, but their role in oocytes is unknown.
  • Oocytes rely on translational control for gene expression changes.

Purpose of the Study:

  • To characterize RNA granules in mouse oocytes.
  • To investigate the presence and nature of P-body-like structures in oocytes.
  • To understand the dynamic changes of these structures during oocyte maturation.

Main Methods:

  • Immunofluorescence microscopy to detect P-body markers (Dcp1a, RAP55, Rck/p54).
  • Observation of Dcp1-bodies in arrested primary oocytes and during in vitro maturation.

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Last Updated: Jun 19, 2026

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  • Analysis of protein partners and sensitivity to siRNA/miRNA depletion and translational inhibitors.
  • Monitoring of EGFP-hDcp1a posttranslational modification during disassembly.

    • Main Results:

    • P-body-like foci, termed Dcp1-bodies, were identified in mouse oocytes.
    • Two distinct types of Dcp1-bodies were observed in primary oocytes, differing in size, protein partners, and inhibitor sensitivity.
    • Dcp1-bodies disassembled during in vitro meiotic maturation, with disappearance by the metaphase II stage.
    • Disassembly correlated with posttranslational modification of EGFP-hDcp1a.

    Conclusions:

    • Mouse oocytes contain distinct P-body-like structures (Dcp1-bodies) involved in translational control.
    • These Dcp1-bodies undergo dynamic changes and disassembly during meiotic maturation.
    • The findings shed light on RNA granule function and regulation in mammalian oocytes.