肝细胞生长因子对ALL小鼠骨髓移植后GVHD和血清Th1/Th2相关细胞因子的影响

为了观察肝细胞生长因子 (HGF)对急性淋巴细胞白血病 (ALL)小鼠异基因骨髓移植 (allo BMT)后GVHD和血清Th1 Th2相关细胞因子的影响 ,BALB c小鼠ALL模型建立后 ,接受 11Gy全身照射 ,将昆明小鼠骨髓移植给该ALL模型小鼠。随机将BALB c小鼠分A、B两组 ,A组移植后 0天至 7天皮下注射HGF ,B组皮下注射PBS。移植后观察A、B两组的GVHD症状和肝、小肠、皮肤的病理学变化 ;移植后第 8天取血检测IFN γ和IL 4水平。结果表明 :A组的GVHD症状积分低于B组 (P <0 .0 5 ) ;A、B两组的IFN γ均高于正常组 (P值分别 <0 0 5和0 0 0 1) ,但A组低于B组 (P <0 .0 1) ;A、B两组的IL 4均低于正常组 (P <0 .0 5 ) ,而A组的IL 4高于B组 (P <0 .0 5 )。结论 :HGF可减轻GVHD的严重程度 ,与HGF有调节Th1 Th2相关细胞因子趋于平衡的作用有关。

Effects of HGF on GVHD and Th1/Th2-Related Cytokines in ALL Mice after Allo-BMT

To observe the effects of hepatocyte growth factor (HGF) on graft-versus-host disease (GVHD) and Th1/Th2 related cytokines in mice with acute lymphoblastic leukemia (ALL) after allogenic bone marrow transplantation (allo-BMT), BALB/c mice were conditioned by total body irradiation with 11 Gy and then were transplanted with allogeneic bone marrow after establishing ALL model. BALB/c mice were divided into groups A and B. The mice of group A were injected subcutaneously with HGF from day 0 to 7 after allo-BMT, and the mice of group B were injected subcutaneously with PBS from day 0 to 7 after allo-BMT. The symptoms of GVHD and the GVHD pathological changes of liver and small intestine and skin were observed. The serum levels of both IFN-gamma and IL-4 were determined by ELISA. The results showed that the score of GVHD in group A was lower than that in group B (P < 0.05). The levels of IFN-gamma in both groups A and B were all higher than that in normal group (P < 0.05 and P < 0.001, respectively), However, the level of IFN-gamma in group A was lower than that in group B (P < 0.01). The levels of IL-4 in both group A and B were all lower than that in normal group (P < 0.05), but the level of IL-4 in group A was higher than that in group B (P < 0.05). It is concluded that HGF can alleviates the severity of GVHD, because of its balancing the Th1/Th2-related cytokines after allo-BMT.