中国组织工程研究 ›› 2022, Vol. 26 ›› Issue (13): 2045-2049.doi: 10.12307/2022.331

• 干细胞移植 stem cell transplantation • 上一篇    下一篇

脑源性神经营养因子修饰人羊膜间充质干细胞移植改善阿尔茨海默病大鼠认知功能

王玉香,崔传举,李彦玲,李艾帆   

  1. 郑州市第一人民医院,河南省郑州市  450000
  • 收稿日期:2020-05-09 修回日期:2020-05-14 接受日期:2020-07-06 出版日期:2022-05-08 发布日期:2021-12-20
  • 通讯作者: 李艾帆,博士,主任医师,郑州市第一人民医院,河南省郑州市 450000
  • 作者简介:王玉香,女,1979年生,河南省睢县人,汉族,2014年桂林医学院毕业,硕士,主治医师,主要从事阿尔茨海默病和脑血管疾病方面的研究。
  • 基金资助:
    河南省医学科技攻关计划联合共建项目(LHGJ20190983),项目负责人:李艾帆

Effect of brain-derived neurotrophic factor modified human amniotic mesenchymal stem cell transplantation on cognitive function in Alzheimer’s disease rats

Wang Yuxiang, Cui Chuanju, Li Yanling, Li Aifan   

  1. Zhengzhou First People’s Hospital, Zhengzhou 450000, Henan Province, China
  • Received:2020-05-09 Revised:2020-05-14 Accepted:2020-07-06 Online:2022-05-08 Published:2021-12-20
  • Contact: Li Aifan, MD, Chief physician, Zhengzhou First People’s Hospital, Zhengzhou 450000, Henan Province, China
  • About author:Wang Yuxiang, Master, Attending physician, Zhengzhou First People’s Hospital, Zhengzhou 450000, Henan Province, China
  • Supported by:
    the Joint Co-construction Project of Henan Medical Science and Technology Research Plan, No. LHGJ20190983 (to LAF)

摘要:

文题释义:
脑源性神经营养因子:BARDE 等于1982年首先在猪脑中发现的一种具有神经营养作用的蛋白质。脑源性神经营养因子广泛分布于中枢神经系统、周围神经系统、骨和软骨组织、内分泌系统等区域,其中在中枢神经系统内的海马体、皮质和基底前脑中含量最高。脑源性神经营养因子水平变化与神经系统疾病、精神疾病和认知发育迟缓有关。
阿尔茨海默病:一种慢性进行性发展的神经系统退行性疾病,以渐进性记忆障碍、认知功能障碍、执行功能障碍、语言障碍及人格行为改变等神经精神症状为特征,病因迄今未明。

背景:研究发现脑源性神经营养因子(BDNF)修饰的人间充质干细胞可用于治疗脊髓损伤和创伤性脑损伤等,但对阿尔茨海默病是否有疗效,既往鲜有报道。
目的:观察脑源性神经营养因子修饰人羊膜间充质干细胞(human amniotic mesenchymal stem cells,hAMSCs)对阿尔茨海默病大鼠学习记忆能力和海马胆碱乙酰转移酶、基底前脑神经生长因子表达的影响。
方法:40只健康雄性成年SD大鼠随机分为对照组、模型组、hAMSCs组、BDNF-hAMSCs组,每组10只。采用双侧海马注射β-淀粉样蛋白25-35构建阿尔茨海默病模型,第14天后侧脑室注射10 μL的hAMSCs或10 μL的脑源性神经营养因子转染hAMSCs。移植后2周,采用Morris水迷宫测试评价大鼠学习记忆能力,免疫组化法检测海马胆碱乙酰转移酶的表达,RT-PCR检测基底前脑神经生长因子mRNA的表达。
结果与结论:①Morris水迷宫测试第3,4,5天时,hAMSCs组和BDNF-hAMSCs组逃避潜伏期均低于模型组(P < 0.05);测试第4,5天时,BDNF-hAMSCs组逃避潜伏期低于hAMSCs组(P < 0.05);②模型组海马胆碱乙酰转移酶阳性神经元数、基底前脑神经生长因子表达量明显低于对照组(P < 0.05);hAMSCs组和BDNF-hAMSCs组海马胆碱乙酰转移酶阳性神经元数、基底前脑神经生长因子表达量均高于模型组(P < 0.05),并且BDNF-hAMSCs组高于hAMSCs组(P < 0.05);③结果表明,用脑源性神经营养因子修饰hAMSCs可进一步提高hAMSCs治疗阿尔茨海默病的认知功能,并且可以明显提高海马胆碱乙酰转移酶和基底前脑神经生长因子的表达水平。
缩略语:脑源性神经营养因子:brain derived neurotrophic factor,BDNF;人羊膜间充质干细胞:human amniotic mesenchymal stem cells,hAMSCs

https://orcid.org/0000-0002-4873-5749(王玉香) 

中国组织工程研究杂志出版内容重点:干细胞;骨髓干细胞;造血干细胞;脂肪干细胞;肿瘤干细胞;胚胎干细胞;脐带脐血干细胞;干细胞诱导;干细胞分化;组织工程

关键词: 干细胞, 人羊膜间充质干细胞, 脑源性神经营养因子, 阿尔茨海默病, 胆碱乙酰转移酶, 脑神经生长因子, 认知功能

Abstract: BACKGROUND: Studies have found that human mesenchymal stem cells modified by brain-derived neurotrophic factor (BDNF) can be used to treat spinal cord injury and traumatic brain injury, but whether there is a curative effect on Alzheimer’s disease is rare in the past reports.
OBJECTIVE: To observe the effects of BDNF modified human amniotic mesenchymal stem cells (hAMSCs) on learning and memory ability and expression of choline acetyltransferase in hippocampus and nerve growth factor in basal forebrain of rats with Alzheimer’s disease. 
METHODS: Forty healthy male adult SD rats were randomly divided into control group, model group, hAMSCs group and BDNF-hAMSCs group with 10 rats in each group. Bilateral hippocampal injection of β-amyloid 25-35 was used to construct an Alzheimer’s disease model. On day 14, 10 μL of hAMSCs or 10 μL of BDNF were injected into the posterior ventricle to transfect hAMSCs. At 2 weeks after transplantation, learning and memory abilities of rats were evaluated by Morris water maze test. Choline acetyltransferase expression in hippocampus was detected by immunohistochemistry. Nerve growth factor expression in the basal forebrain was detected by RT-PCR.   
RESULTS AND CONCLUSION: (1) At 3, 4, and 5 days of Morris water maze test, the escape latencies of the hAMSCs group and the BDNF-hAMSCs group were lower than that in the model group (P < 0.05). At 4 and 5 days, the escape latency of the BDNF-hAMSCs group was lower than that of the hAMSCs group (P < 0.05). (2) The number of choline acetyltransferase positive neurons and nerve growth factor expression in the basal forebrain in hippocampus of model group were significantly lower than those of control group (P < 0.05). The number of choline acetyltransferase positive neurons in the hippocampus and nerve growth factor expression in the basal forebrain of the hAMSCs group and the BDNF-hAMSCs group were higher than those of the model group (P < 0.05), and the number of choline acetyltransferase positive neurons and nerve growth factor expression in the BDNF-hAMSCs group were higher than those in the hAMSCs group (P < 0.05). (3) Results suggest that modification of hAMSCs with BDNF can further improve the efficacy of stem cells in the treatment of Alzheimer’s disease, and can significantly increase the expression levels of choline acetyltransferase in the hippocampus and nerve growth factor in the basal forebrain. 

Key words: stem cells, human amniotic mesenchymal stem cells, brain-derived neurotrophic factor, alzheimer’s disease, choline acetyltransferase, brain nerve growth factor, cognitive function

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