张芬

• 1:同济大学生命科学与技术学院

摘要(Abstract)：

探究microRNA-124a(miR-124a)对脊髓损伤(spinal cord injury,SCI)继发性损伤的影响及相关机制.取90只健康成年Wistar大鼠建立SCI模型,随机分为3组,第1组术后仅注射生理盐水,为未治疗组;第2组术后注射骨髓基质细胞源神经干细胞(BMSCs-D-NSCs)治疗,为正常移植组;第3组术后注射携带miR-124a的骨髓基质细胞源神经干细胞(miR-124a-BMSCs-D-NSCs),为转染移植组.另选取60只健康成年Wistar大鼠作为对照组,仅给予假手术处理.采用HE染色观察大鼠的组织形态学变化,采用实时荧光定量PCR技术检测大鼠的miR-124a表达情况,并对损伤灶进行显微测量计算,比较脊髓功能恢复的BBB评分情况及脊髓组织损伤大小的情况.结果显示,SCI后,脊髓组织中miR-124a基因表达显著降低,脊髓神经功能也明显降低,miR-124a-BMSCs-D-NSCs能够有效地改善SCI,减少脊髓损伤组织范围及体积,还能改善中枢神经的功能.

关键词(KeyWords)： microRNA-124a;脊髓损伤;神经功能;作用机制

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 张芬

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