In-vitro generation of interleukin-10 secreting B-regulatory cells from donor adipose tissue derived mesenchymal stem cells and recipient peripheral blood mononuclear cells for potential cell therapy

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Abstract

Background Interleukin-10 secreting B-cells are a major subset of B-regulatory cells (B-regs), commonly recognized as CD19+/38hi/24hi/IL10+. They carry out immunomodulation by release of specific cytokines and/or cell-to-cell contact. We have generated B-regs in-vitro from donor adipose tissue derived mesenchymal stem cells (AD-MSC) and renal allograft recipient (RAR) peripheral blood mononuclear cells (PBMC) for potential cell therapy. Material and methods Mononuclear cells separated by density gradient centrifugation from 50 ml anti-coagulated blood of 15-RAR and respective donors were analysed for baseline B-regs using appropriate antibodies. Equal amount (20 × 106 cells/ml) of stimulator (irradiated at 7.45 Gy/min for 10 min) and responder (non-irradiated) cells were co-cultured with in-vitro generated AD-MSC (1 × 106 cells/ml) in proliferation medium containing lipopolysaccharide from E. coli K12 strain at 37 °C with 5% CO2. Cells were harvested on day-7 and analyzed for viability, sterility, quantity, morphology and phenotyping. In-vitro generated B-reg levels were compared with baseline B-regs. Results In-vitro generated B-reg count increased to 16.75% from baseline count of 3.35%. Conclusion B-regs can be successfully generated in-vitro from donor AD-MSC and RAR PBMC for potential cell therapy.

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Gupte, K. S., Vanikar, A. V., Trivedi, H. L., Patel, C. N., & Patel, J. V. (2017). In-vitro generation of interleukin-10 secreting B-regulatory cells from donor adipose tissue derived mesenchymal stem cells and recipient peripheral blood mononuclear cells for potential cell therapy. Biomedical Journal, 40(1), 49–54. https://doi.org/10.1016/j.bj.2017.01.003

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