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Pubmed ID :27913779
Publication Date : //

Comparison of proliferative and immunomodulatory potential of adipose-derived mesenchymal stem cells from young and geriatric cats.


Objectives The objective of this study was to compare the ability of adipose-derived mesenchymal stem cells (aMSCs) generated from young vs geriatric cats to proliferate in culture, suppress lymphocyte proliferation and undergo senescence. Methods Adipose tissues from five young (<5 years) and six geriatric (>10 years) cats were harvested and cryopreserved for subsequent aMSC isolation and culture. aMSC proliferation in culture was compared via determination of time until passage two and by 3-(4,5-demethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay. The immunomodulatory capacity of aMSCs was assessed using lymphocyte proliferation assays, and senescence was evaluated using senescence-associated B-galactosidase (SABG) expression. All assays were performed on aMSCs between passage two and passage three. Results aMSCs from geriatric cats took significantly longer ( P = 0.008) to reach passage two (median 11 days, range 9-22 days) compared with aMSCs from young healthy cats (median 7 days, range 6-8 days). No significant difference was detected between young and geriatric cats in terms of their ability to suppress lymphocyte proliferation. SABG expression was not significantly different between young and geriatric aMSCs. Conclusions and relevance Compared with young feline aMSCs, geriatric aMSCs are significantly impaired in their ability to rapidly proliferate to passage two following initial culture, presenting a concern for autologous therapy. Nonetheless, once the cells are expanded, young and geriatric cat aMSCs appear to be equivalent in terms of their ability to functionally suppress T-cell activation and proliferation.

Authors : Zajic Lara B , Webb Tracy L , Webb Polly , Coy Jonathan W , Dow Steve W , Quimby Jessica M ,

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