Characterization of equine adipose tissue-derived progenitor cells before and after cryopreservation.

The researchers have analyzed equine adipose tissue-derived progenitor cells, or eAT-PCs, examining their ability to proliferate and differentiate before and after cryopreservation. The study findings assert that these eAT-PCs have potential for use in different cell therapies for horse injuries.

Characteristics of Isolated Cells

• The eAT-PCs were isolated from horse adipose tissue, which is a type of fat tissue.
• In an in vitro environment, the cells demonstrated a similar morphology to fibroblast cells.

Proliferation Rate

• The researchers cultivated these isolated cells over a period of 63 days, covering 23 passages, to measure their proliferative potential.
• They observed similar proliferation rates before and after cryopreservation, substantiating the robustness of these cells, even after preservation in ultra-low temperatures.

Differentiation Potential

• To evaluate their differentiation capability, the isolated cells were subjected to osteogenic, adipogenic, and chondrogenic differentiation conditions.
• After osteogenic induction, successful formation of a calcified extracellular matrix was observed, illustrating the cells’ potential to form bone tissue.
• For adipogenic differentiation, two different methods were used, with the latest one developed by the researchers that reduces the differentiation time to 7 days. The appearance of significant lipid accumulation confirmed the cells’ ability to transform into adipose (fat) tissue.
• The cells were encouraged to differentiate into chondrogenic tissue (cartilage), with successful differentiation observed after 21 days.

Cryopreservation Impact

• Notably, all these characteristics of the cells, including their ability to differentiate into multiple types of cells, remained constructive even after cryopreservation.
• This aspect demonstrates the potential these cells have for long-term storage and their subsequent application in different cell therapies.

Conclusion

• Researchers concluded that these eAT-PCs from horses present a novel promising type of progenitor cells for various horse injury therapies.
• Their successful isolation, high proliferation rate, multi-differentiation potential, and their ability to preserve these properties post-cryopreservation make them a valuable resource for stem cell-based therapeutic interventions in equines.