Thalidomide with Blockade of Co-stimulatory Molecules Prolongs the Survival of Alloantigen-primed Mice with Cardiac Allografts
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Background: Miscellaneous memory cell populations that exist before organ transplantation are crucial barriers to transplantation. In the present study, we used a skin-primed heart transplantation model in mouse to evaluate the abilities of Thalidomide (TD), alone or in combination with co-stimulatory blockade, using monoclonal antibodies (mAbs) against memory T cells and alloantibodies to prolong the second cardiac survival.
Results: In the skin-primed heart transplantation model, TD combined with mAbs significantly prolonged the second cardiac survival, accompanied by inhibition of memory CD8 T cells. This combined treatment enhanced the CD4Foxp3 regulatory T cells ratio in the spleen, restrained the infiltration of lymphocytes into the allograft, and suppressed the allo-response of spleen T cells in the recipient. The levels of allo-antibodies also decreased in the recipient serum. In addition, we detected low levels of the constitutions of the lytic machinery of cytotoxic cells, which cause allograft damage.
Conclusions: Our study indicated a potential synergistic action of TD in combination with with mAbs to suppress the function of memory T cells and increase the survival of second allografts in alloantigen-primed mice.
Zhu M, Ma Y, Tan K, Zhang L, Wang Z, Li Y BMC Immunol. 2022; 23(1):38.
PMID: 35945504 PMC: 9361527. DOI: 10.1186/s12865-022-00512-5.
Ma Y, Yan G, Guo J, Li F, Zheng H, Wang C Front Immunol. 2021; 12:616074.
PMID: 33732240 PMC: 7959711. DOI: 10.3389/fimmu.2021.616074.