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Enhanced method to select human oogonial stem cells for fertility research
Russel C Sequeira1, Sivanandane Sittadjody2, Tracy Criswell2
1Wake Forest Institute for Regenerative Medicine, Wake Forest University School of Medicine, Winston-Salem, NC, 27101, USA. rsequeir@wakehealth.edu.
Cell and Tissue Research
|August 20, 2021
Summary
Researchers improved the isolation of oogonial stem cells (OSCs) using a novel two-antibody method, doubling the yield for potential infertility treatments in premature ovarian failure (POF) patients.
Area of Science:
- Reproductive Biology
- Stem Cell Research
- Infertility Therapeutics
Background:
- Premature ovarian failure (POF) necessitates alternative methods for obtaining mature oocytes.
- Oogonial stem cells (OSCs) offer a promising avenue for infertility treatment.
- Previous OSC isolation relied on DDX4 antibody, with debated cell localization.
Purpose of the Study:
- To enhance the isolation yield of oogonial stem cells (OSCs).
- To validate a novel dual-marker antibody approach for OSC identification.
- To improve efficiency in generating oocytes for treating premature ovarian failure (POF).
Main Methods:
- Utilized magnetic-activated cell sorting (MACS) with combined anti-DDX4 and anti-IFITM3 antibodies.
- Isolated OSCs from ovarian tissue across the female lifespan.
- Cultured isolated cells in vitro to assess germline phenotype and self-assembly.
Main Results:
- The dual-marker method yielded approximately double the percentage of OSCs compared to single-marker methods.
- Isolated cells maintained germline phenotype (DDX4, IFITM3) and formed embryoid bodies.
- Cells developed into >40 µm oocyte-like structures expressing early oocyte markers (GDF9, DAZL, ZP1).
Conclusions:
- A novel MACS-based, two-marker strategy significantly enhances OSC isolation efficiency.
- This method provides a more reliable approach to germline marker selection.
- The improved OSC isolation holds clinical significance for future in vitro fertilization (IVF)/intracytoplasmic sperm injection (ICSI) treatments for POF.
