Effects of Anti-CD45RB Monoclonal Antibody for T Lymphocyte Subsets in Mice Heart Transplantation Model

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Abstract

Anti-CD45RB monoclonal antibody (anti-CD45RBmAb), as a new immune tolerance inducer, may inhibit T cell proliferation and induce immune tolerance through competitive combination with CD45RB on the T cell surface, which blocks the conduction of activation signals. However, how anti-CD45RBmAb plays its role on T lymphocyte subsets during immunosuppression remains unclear. In this work, we investigate the effects of anti-CD45RBmAb on CD3+ T lymphocyte both in vitro and in allogeneic heart transplant model in vivo. Interestingly, anti-CD45RBmAb could inhibit the proliferation of T cells, promote the transformation of T lymphocyte to Treg and Th2 cells, suppress the transformation to Th17 and Th1 cells, increase the number of Ts cells, decrease the number of Tm cells and thus play a role in immune inhibition and induction of immune tolerance.

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