• Center of Cell Transplant, Institute of Organ Transplantation,Sichuan Academy of Medical Sciences and Sichuan Provincial People’s Hospital, Chengdu 610072, Sichuan Province, China;
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Objective  To investigate the immunological rejection after hepatocyte transplantation for acute liver failure (ALF) in mice.
Methods  The hepatocytes were isolated from pig,BALB/c and C57BL/6 mice livers were conducted and then transplanted into C57BL/6 mice.CCl4 was used to make ALF mice model.The experimental animals were randomly divided into three groups, including syngenic group,allogeneic group,and xenogenic group.The survival statuses of all the mice were recorded. The alteration of T lymphocyte subsets,immune globulin,and cytokine were determined.
Results  ①The survival ratio was 8/10,6/10, and 3/10 in the syngenic group, allogeneic group, and xenogenic group, respectively.The survival ratio in the syngenic group was significantly higher than that in the other two groups (P<0.05).②The CD4+ and CD8+ T cells of the peripheral blood in the syngenic group did not change significantly on week one after transplantation.The CD4+ T cells in the allogeneic group reached the peak on day 3 after hepatocyte transplantation (P<0.05), while CD8+ T cells did not change much in one week.The CD4+ and CD8+ T cells in the xenogenic group increased and reached the peak on day 3 after transplantation (P<0.05).③There were no significantly differences of IgM and IgG in the syngenic group among 0.5, 1, and 3 d after transplantation. IgM of the allogeneic group and xenogenic group reached the peak on day 1 (P<0.05) and IgG reached the peak on day 3 (P<0.05) after transplantation.④The concentrations of IFN-γ, TNF-ɑ, and IL-2 in the allogeneic group and xenogenic group were significantly higher than those in the syngenic group (P<0.05).The concentration of IL-6 of the xenogenic group was higher than that of the other two groups (P<0.05).
Conclusions  CD4+ and CD8+ T cells play an important role in immune response to both allogeneic and xenogenic hepatocyte transplantation, as well as induce humoral immune response early after hepatocyte transplantation.

Citation: WEI Lingling,DENG Shaoping,HUANG Xiaolun. Investigation of Immunological Rejection after Hepatocyte Transplantation for Acute Liver Failure in Animals. CHINESE JOURNAL OF BASES AND CLINICS IN GENERAL SURGERY, 2012, 19(2): 135-139. doi: Copy