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Updated: Jul 14, 2026
08:08
Application of Mouse Parthenogenetic Haploid Embryonic Stem Cells as a Substitute of Sperm
Published on: November 19, 2020
Primate embryonic stem cells proceed to early gametogenesis in vitro
Takeshi Teramura1, Toshiyuki Takehara, Nobuyuki Kawata
1Department of Obstetrics and Gynecology, Graduate School of Medicine, Mie University, Mie, Japan.
Cloning and Stem Cells
|June 21, 2007
Summary
Cynomolgus monkey embryonic stem cells (cyESCs) were differentiated into developing germ cells, including primordial germ cells (PGCs). This study provides a valuable model for understanding primate germ cell development.
Area of Science:
- Reproductive Biology
- Stem Cell Research
- Developmental Biology
Background:
- Nonhuman primate embryonic stem cells (ESCs) are crucial for studying human gametogenesis due to developmental similarities.
- Previous research demonstrated germ cell formation from mouse ESCs in vitro.
- Understanding primate germ cell development requires suitable in vitro models.
Purpose of the Study:
- To establish cynomolgus monkey ESC lines (cyESCs).
- To induce differentiation of cyESCs into germ cells.
- To investigate primate germ cell development using specific molecular markers.
Main Methods:
- Establishment and characterization of three pluripotent cynomolgus monkey ESC lines (cyESCs).
- Induction of ESC differentiation towards germ cells.
- Analysis of germ cell-specific marker expression (Vasa, OCT-4) and meiotic gene transcripts.
Main Results:
- Established and confirmed pluripotency of three cyESC lines.
- Induced differentiation led to expression of Vasa and meiotic markers.
- VASA protein and OCT-4 coexpression observed in differentiated cell clumps, suggesting early gonocyte development.
- Meiosis-specific gene expression was detected.
Conclusions:
- Cynomolgus monkey ESCs can differentiate into developing germ cells, including primordial germ cells (PGCs) and gonocytes, in vitro.
- This differentiation system offers a suitable model for studying primate germ cell development mechanisms.
- The findings contribute to understanding the early stages of germ cell formation in primates.
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