骨髓单个核细胞移植对脑梗死小鼠神经元高迁移率蛋白1迁移的影响

摘要

目的：观察骨髓单个核细胞（BMMNCs）移植对脑梗死小鼠大脑高迁移率蛋白1（HMGB1）迁移的影响。方法：制备BMMNCs后植入模型；测定改良神经功能评分（mNSS）；测定梗死体积及相关蛋白表达量；观察HMGB1的迁移情况。结果：移植组mNSS评分和脑梗死体积均较溶剂组减小；HMGB1表达高于溶剂组；晚期糖基化终产物受体及肿瘤坏死因子α表达低于溶剂组；荧光显示小鼠HMGB1释放少于溶剂组。结论：移植BMMNCs抑制梗死小鼠神经元中HMGB1的释放。%Objective To observe the effect of bone marrow mononuclear cells (BMMNCs) transplantation on high mobility group box1 (HMGB1) migration in stroke mouse. Methods BMMNCs were harvest and injected intravenously into stroke mouse model; modified neurological severity scores(mNSS) were tested; brain infarct vol-ume and related protein expression levels were measured, then HMGB1 migration were observed. Results mNSS score and brain infarct volume in transplantation group weresignificantly lower than vehicle group , while HMGB1 expression were significantly higher than vehicle group. The expression levels of RAGE and TNF-α in transplanta-tion group were significantly lower than vehicle group. Immunofluorescence assay showed that the release of HMGB1 in brain penumbra area of transplanted mouse was significantly less than vehicle groups. Conclusions BMMNCs transplantation could inhibit the release of HMGB1 in mouse brain.