Journal
IN VIVO
Volume 31, Issue 3, Pages 343-348Publisher
INT INST ANTICANCER RESEARCH
DOI: 10.21873/invivo.11065
Keywords
Tendonitis; vitamin C; adipose-derived stem cell; SMP30-KO mouse; stem cell therapy
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Funding
- Bio-industry Technology Development Program, Korea Institute of Planning & Evaluation for Technology in Food, Agriculture, Forestry Fisheries [312062-5]
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Background/Aim: We hypothesized that combined therapy using adipose-derived stem cells (ASCs) and vitamin C might improve tendon regeneration in tendonitis. To determine combined effects of ASC transplantation with vitamin C, we used senescence marker protein 30 (SMP30)-knockout (KO) mice that cannot biosynthesize vitamin C by themselves. Materials and Methods: SMP30-KO were divided into four groups: Control, vitamin C, ASCs, and vitamin C plus ASCs. Tendonitis was induced in the achilles tendons via injection of collagenase type I. After 1 week, ASCs were injected into the intratendonal region. After 30 days, all mice were sacrificed and Achilles tendons were isolated. Results: Gross and microscopic findings showed mice treated with combination of ASC transplantation and vitamin C showed better tendon regeneration than those in other groups. This combination led to higher serum vitamin C levels than use of vitamin C alone. This indicates that the vitamin C-treated group used more vitamin C as a precursor to collagen synthesis, whereas vitamin C was in excess in the combination group because of the added effect of ASCs on tendon healing. Conclusion: This study showed that vitamin C improved the effect of ASC transplantation on tendonitis by inducing a better stem cell niche.
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