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Analysis of Chromosome Segregation, Histone Acetylation, and Spindle Morphology in Horse Oocytes
Published on: May 11, 2017
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BCL2-modifying factor promotes germ cell loss during murine oogenesis.
Kavitha Vaithiyanathan1, Seng H Liew2, Nadeen Zerafa2
1Hudson Institute of Medical ResearchClayton, Victoria, Australia.
Reproduction (Cambridge, England)
|February 27, 2016
Summary
The pro-apoptotic protein BCL2-modifying factor (BMF) mediates fetal oocyte loss during ovarian development. Loss of BMF in mice reduces germ cell apoptosis, impacting maximal germ cell numbers but not primordial follicle establishment.
Area of Science:
- Reproductive biology
- Developmental biology
- Cell death mechanisms
Background:
- Apoptosis is crucial for eliminating germ cells during ovarian development.
- The specific proteins regulating germ cell death remain largely unknown.
- BCL2-modifying factor (BMF) is a pro-apoptotic protein implicated in cell death.
Purpose of the Study:
- To investigate the role of BMF in germ cell apoptosis during mouse ovarian development.
- To determine the expression pattern of BMF in developing ovaries.
- To assess the impact of BMF deficiency on germ cell numbers and apoptosis.
Main Methods:
- Immunohistochemistry to localize BMF protein in embryonic and neonatal mouse ovaries.
- Analysis of germ cell apoptosis levels in wild-type (WT) and Bmf(-/-) mice.
- Quantification of germ cell numbers in ovaries at various developmental stages.
Main Results:
- BMF protein expression was detected in germ cells during specific stages of meiotic prophase (E15.5, E17.5, PN1).
- Bmf(-/-) female mice exhibited reduced germ cell apoptosis at E15.5 and E17.5.
- Ovaries from Bmf(-/-) mice showed increased germ cell numbers at E15.5 and PN1 compared to WT, but numbers were similar by PN3.
Conclusions:
- BMF is a key mediator of fetal oocyte loss in mice.
- BMF regulates the maximal number of germ cells during ovarian development.
- BMF does not affect the initial establishment of primordial follicles in the ovarian reserve.
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