Derivation of genetically stable mesenchymal stem cells from feline embryonic cell aggregates.

Evidence from laboratory and animal studies provides groundwork for understanding mechanisms and potential before human studies continue.

• Level A · Stronger Clinical Evidence
• Level B · Emerging clinical evidence with positive signals
• Level C · Early human research exploring benefits
• Level D · Scientific groundwork from lab and animal studies
• Emerging · Emerging topic under active research

Abstract (original English)

Mesenchymal stem cells (MSCs) are regarded as a fundamental component in the advancement of regenerative therapies for feline medicine. In this study, a novel protocol was established to derive MSCs from discarded feline embryos obtained post-ovariohysterectomy. Embryonic cell aggregates (EAs) were generated through collagenase digestion of embryos, followed by three-dimensional (3D) culture in complete medium containing 100 ng/mL basic fibroblast growth factor (bFGF). The EAs were subsequently plated on collagen-coated dishes to yield feline embryonic cell aggregate-derived MSCs (feEA-MSCs). Strong expression of characteristic MSCs markers CD73, CD90, and CD105 was demonstrated by surface marker analysis, with minimal expression of CD34 and HLA-DR. Furthermore, significantly higher mRNA expression of the pluripotency-associated transcription factors NANOG and SOX2 was exhibited by feEA-MSCs compared to adipose-derived MSCs (AD-MSCs) (P < 0.05). Consistent alkaline phosphatase activity was maintained by the cells, while a karyotypically normal state at passage 6 (2n = 38) was retained. Overall, this approach provides a source of feline MSCs with enhanced pluripotency characteristics, demonstrating significant potential for translational applications in regenerative medicine.

Evidence level

Evidence from laboratory and animal studies provides groundwork for understanding mechanisms and potential before human studies continue.

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