Title |
Mesenchymal stem cells of human placenta and umbilical cord suppress T‐cell proliferation at G0 phase of cell cycle
|
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Published in |
Cell Biology International, January 2013
|
DOI | 10.1002/cbin.10033 |
Pubmed ID | |
Authors |
Shalini Vellasamy, Pratheep Sandrasaigaran, Sharmili Vidyadaran, Maha Abdullah, Elizabeth George, Rajesh Ramasamy |
Abstract |
Mesenchymal stem cells (MSC) generated from human umbilical cord (UC-MSC) and placenta (PLC-MSC) were assessed and compared for their immunomodulatory function on T cells proliferation by analysis of the cell cycle. Mitogen stimulated or resting T cells were co-cultured in the presence or absence of MSC. T-cell proliferation was assessed by tritiated thymidine ((3) H-TdR) assay and the mechanism of inhibition was examined bycell cycle and apoptosis assay. Both UC-MSC and PLC-MSC profoundly inhibited the proliferation of T-cell, mainly via cell-to-cell contact. MSC-mediated anti-proliferation does not lead to apoptosis,but prevented T cells from entering S phase and they therefore accumulated in the G(0) /G(1) phases. The anti-proliferative activity of MSC was related to this cell cycle arrest of T-cell. UC-MSC produced a greater inhibition than PLC-MSC in all measured parameters. |
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