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Updated: Jul 2, 2026
07:37
Human Ovarian Surface Epithelium Organoids as a Platform to Study Tissue Regeneration
Published on: August 16, 2024
Normal ovarian surface epithelial label-retaining cells exhibit stem/progenitor cell characteristics
Paul P Szotek1, Henry L Chang, Kristen Brennand
1Pediatric Surgical Research Laboratories, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02114, USA.
Summary
Researchers identified label-retaining cells in the adult mouse ovary as potential somatic stem/progenitor cells. These cells are quiescent, proliferate during estrous cycling, and show enhanced growth, supporting their role in ovarian repair.
Area of Science:
- Reproductive biology
- Stem cell research
- Ovarian biology
Background:
- Ovulation involves cyclic rupture and regeneration of the ovarian coelomic epithelium.
- This repetitive process suggests a role for somatic stem/progenitor cells in ovarian repair and remodeling.
Purpose of the Study:
- To identify and characterize somatic stem/progenitor cells within the adult mouse ovarian coelomic epithelium.
- To investigate the properties of label-retaining cells as candidates for these stem/progenitor cells.
Main Methods:
- Utilized Bromodeoxyuridine (BrdU) incorporation for cell proliferation tracking.
- Employed doxycycline-inducible histone2B-green fluorescent protein (H2B-GFP) pulse-chase techniques to identify label-retaining cells.
- Assessed cell proliferation in vivo and colony formation in vitro.
Main Results:
- A distinct label-retaining cell population was identified in the adult mouse ovarian coelomic epithelium.
- These cells demonstrated quiescence with asymmetric label retention.
- The identified cells responded to estrous cycling with proliferation and exhibited enhanced in vitro colony-forming capacity, with enrichment for the side population indicating cytoprotective mechanisms.
Conclusions:
- The label-retaining cell population in the mouse ovarian coelomic epithelium possesses key characteristics of somatic stem/progenitor cells.
- These findings support the hypothesis that these cells are crucial for the regenerative repair of the ovarian surface epithelium following ovulation.
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