Effects of resveratrol and its analogues on the cell cycle of equine mesenchymal stem/stromal cells

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  • TAMURA Norihisa
    Clinical Veterinary Medicine Division, Equine Research Institute, Japan Racing Association, Tochigi 329-0412, Japan Department of Clinical Sciences and Services, Royal Veterinary College, University of London, Hatfield AL9 7TA, UK
  • HEIDARI Neda
    Department of Clinical Sciences and Services, Royal Veterinary College, University of London, Hatfield AL9 7TA, UK
  • FARAGHER Richard G.A.
    School of Pharmacy and Biomolecular Sciences, University of Brighton, Brighton BN2 4GJ, UK
  • SMITH Roger K.W.
    Department of Clinical Sciences and Services, Royal Veterinary College, University of London, Hatfield AL9 7TA, UK
  • DUDHIA Jayesh
    Department of Clinical Sciences and Services, Royal Veterinary College, University of London, Hatfield AL9 7TA, UK

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<p>Resveratrol (RSV; trans-3,5,4′-trihydroxystilbene) strongly activates sirtuin 1, and it and its analogue V29 enhance the proliferation of mesenchymal stem/stromal cells (MSCs).Although culture medium containing 5‐azacytydine and RSV inhibits senescence of adipose tissue–derived MSCs isolated from horses with metabolic syndrome, few studies have reported the effects of RSV on equine bone marrow–derived MSCs (eBMMSCs) isolated from horses without metabolic syndrome. The aim of this study was to investigate the effects of RSV and V29 on the cell cycle of eBMMSCs. Following treatment with 5 µM RSV or 10 µM V29, the cell proliferation capacity of eBMMSCs derived from seven horses was evaluated by EdU (5-ethynyl-2′-deoxyuridine) and Ki-67 antibody assays. Brightfield images of cells and immunofluorescent images of EdU, Ki-67, and DAPI staining were recorded by fluorescence microscopy, and the number of cells positive for each was quantified and compared by Friedman’s test at P<0.05. The growth fraction of eBMMSCs was significantly increased by RSV and V29 as measured by the EdU assay (control 28.1% ± 13.8%, V29 31.8% ± 14.6%, RSV 32.0% ± 10.8%; mean ± SD; P<0.05) but not as measured by the Ki-67 antibody assay (control 27.0% ± 11.2%, V29 27.4% ± 10.8%, RSV 27.7% ± 6.8%). RSV and V29 promoted progression of the cell cycle of eBMMSCs into the S phase and may be useful for eBMMSC expansion.</p>

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