Researchers from Osaka Metropolitan University have succeeded in generating high-quality feline embryonic stem cells using sperm and eggs from testes and ovaries discarded during sterilization surgery.
The embryonic stem cells can differentiate into various types of cells and be transplanted to restore internal damage. They are characterized by their near-natural state, similar to induced pluripotent stem (iPS) cells. Recent research has successfully generated feline iPS cells, but not embryonic stem cells, so research on these cell lines is essential to improve the quality of iPS cells.
The cells produced in this recent study were generated by isolating and culturing the inner cell mass of very early stage embryos. These can be maintained in an undifferentiated state and can differentiate into the three germ layers endoderm, ectoderm, and mesoderm.
“The potential to derive sperm and oocytes from feline ES cells could contribute to the conservation of endangered wild-cat species,” says lead researcher Takumi Yoshida. ν
Yoshida, T. et al. “Establishment of feline embryonic stem cells from the inner cell mass of blastocysts produced in vitro” Regenerative Therapy, 2025; 28: 63 DOI: 10.1016/j.reth.2024.11.010. Science Daily.
