中国组织工程研究 ›› 2022, Vol. 26 ›› Issue (8): 1247-1252.doi: 10.12307/2022.231

• 组织构建实验造模 experimental modeling in tissue construction • 上一篇    下一篇

MPTP诱导帕金森病小鼠亚急性与慢性模型的比较及评价

陈世坚1,李  舸2,张  钰2,关雅伦2,李雪娇2,刘书华2,李永超2,李韵峰2,高金风1,魏小月1,赵宇红1   

  1. 1广东药科大学,广东省广州市   510006;2广东省实验动物重点实验室,广东省实验动物监测所,广东省广州市   510663
  • 收稿日期:2020-11-17 修回日期:2020-11-19 接受日期:2021-01-31 出版日期:2022-03-18 发布日期:2021-11-02
  • 通讯作者: 赵宇红,博士,副教授,广东药科大学,广东省广州市 510006
  • 作者简介:陈世坚,男,1995年生,广东省揭阳市人,汉族,广东药科大学在读硕士,主要从事神经药理学研究。
  • 基金资助:
    国家自然科学基金项目(31702074),项目负责人:李舸;广东省科技计划项目基金(2017A03030303080),项目负责人:赵宇红

Comparison and evaluation of MPTP-induced subacute and chronic models of Parkinson’s disease in mice

Chen Shijian1, Li Ge2, Zhang Yu2, Guan Yalun2, Li Xuejiao2, Liu Shuhua2, Li Yongchao2, Li Yunfeng2, Gao Jinfeng1, Wei Xiaoyue1, Zhao Yuhong1   

  1. 1Guangdong Pharmaceutical University, Guangzhou 510006, Guangdong Province, China; 2Guangdong Key Laboratory of Experimental Animals, Guangdong Laboratory Animal Monitoring Institute, Guangzhou 510663, Guangdong Province, China
  • Received:2020-11-17 Revised:2020-11-19 Accepted:2021-01-31 Online:2022-03-18 Published:2021-11-02
  • Contact: Zhao Yuhong, MD, Associate professor, Guangdong Pharmaceutical University, Guangzhou 510006, Guangdong Province, China
  • About author:Chen Shijian, Master candidate, Guangdong Pharmaceutical University, Guangzhou 510006, Guangdong Province, China
  • Supported by:
    the National Natural Science Foundation of China, No. 31702074 (to LG); the Science and Technology Plan of Guangdong Province, No. 2017A03030303080 (to ZYH)

摘要:

文题释义:
1-甲基-4-苯基-1,2,3,6-四氢吡啶(1-Methyl-4-phenyl-1,2,3,6-tetrahydropyridine,MPTP):具有神经毒性,经常用于实验动物帕金森疾病模型的构建。MPTP在全身给药后,因其高度亲脂性而迅速穿过血脑屏障,一旦进入大脑,原毒素MPTP通过非多巴胺能细胞内的单胺氧化酶B(MAO-B)代谢成1-甲基-4-苯基-2,3-二氢吡啶鎓,然后迅速催化生成活性毒性化合物1-甲基-4-苯基吡啶离子(MPP+)。它一旦进入多巴胺能神经元,便可被分离到突触体囊泡中或被浓缩在线粒体内,抑制线粒体复合物Ⅰ并耗尽神经元ATP的储存,从而导致多巴胺能神经元的丢失。
酪氨酸羟化酶(tyrosine Hydroxylase,TH):催化酪氨酸生成左旋多巴,是介导多巴胺生物合成的关键限速步骤。因此,运动评价和TH的表达及活性检测是帕金森病的重要指标,能较好地反映帕金森的疾病发展进程。
背景:1-甲基-4-苯基-1,2,3,6-四氢吡啶(1-Methyl-4-phenyl-1,2,3,6-tetrahydropyridine,MPTP)诱导的帕金森病小鼠模型是较为广泛使用的帕金森病动物模型之一,可以部分反映帕金森病的发病过程和病理特征。
目的:利用MPTP诱导建立小鼠亚急性和慢性帕金森病模型,观察两种动物模型在行为学、组织病理学及相关蛋白水平变化上的异同及其与疾病临床症状的差异性。
方法:C57BL/6J雄性小鼠40只随机分为4组:亚急性模型组小鼠腹腔注射MPTP,25 mg/kg,1次/d,连续注射7 d诱导亚急性模型;对照1组腹腔注射生理盐水;慢性模型组小鼠皮下注射MPTP(25 mg/kg)并腹腔注射丙磺舒(Probenecid,250 mg/kg),每间隔3.5 d注射1次,共10次诱导慢性模型;对照2组腹腔注射Probenecid溶剂。通过疲劳转棒实验与爬杆实验测试小鼠行为变化;利用免疫荧光染色检测脑黑质区酪氨酸羟化酶阳性细胞分布;采用免疫印迹法检测脑组织中酪氨酸羟化酶蛋白表达水平。研究所涉及的动物实验获得广东省实验动物监测所AAALAC认证机构动物实验动物使用与管理委员会(IACUC)批准[IACUC2020137]。
结果与结论:①在亚急性小鼠模型中,疲劳转棒实验结果显示小鼠在加速转动的转棒上停留时间较对照1组显著降低(P < 0.05);在爬杆实验中,小鼠从杆顶部运动到底部的时间较对照1组显著增加(P < 0.05),但黑质区的酪氨酸羟化酶的阳性细胞数及酪氨酸羟化酶蛋白表达与对照1组相比无显著差异;②在慢性模型小鼠中,疲劳转棒的停留及爬杆实验总时间与对照2组相比均无显著差异,但黑质区酪氨酸羟化酶阳性细胞数量及酪氨酸羟化酶蛋白表达水平显著低于对照2组(P < 0.05);③结果说明,MPTP诱导的亚急性和慢性帕金森小鼠模型由于造模方式的差异,分别在运动损伤和病理改变中表现出与人帕金森病部分相似的表型,提示在利用上述两种模型开展相关研究中,需根据实验目的选择适当的动物模型开展。

https://orcid.org/0000-0003-2976-5595 (赵宇红) 

中国组织工程研究杂志出版内容重点:组织构建;骨细胞;软骨细胞;细胞培养;成纤维细胞;血管内皮细胞;骨质疏松;组织工程

关键词: 帕金森病, MPTP, 亚急性模型, 慢性模型, 酪氨酸羟化酶

Abstract: BACKGROUND: A mouse model of Parkinson's disease that is inducted by 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP) is one of the widely used animal models that partly reflects the pathogenesis and pathological characteristics of Parkinson’s disease. 
OBJECTIVE: To establish subacute and Chronic Parkinson's disease models using MPTP, and to observe the similarities and differences between the two animal models in behavior, histopathology, and changes in related protein levels, and their differences with the clinical symptoms of the disease. 
METHODS: Forty C57BL/6J mice were randomized into four groups. In subacute model group, mice were injected with MPTP 25 mg/kg/d intraperitoneally for 7 days. In control group 1, injected with normal saline intraperitoneally; chronic model group, injected with MPTP subcutaneously at 25 mg/kg, and then with probenecid at 250 mg/kg intraperitoneally. In the chronic model group, MPTP+probenecid were injected at an interval of 3.5 days for a total of 10 times to induce a chronic model. In control group 2, mice were injected with probenecid intraperitoneally. The behavioral changes of mice were tested by the rotarod and the pole tests, and the distribution of tyrosine hydroxylase positive cells in the substantia nigra was detected by immunofluorescence staining, and the expression level of tyrosine hydroxylase protein in brain tissue was detected by western blot. The study protocol was approved by the Institutional Animal Care and Use Committee (IACUC) of Guangdong Laboratory Animal Monitoring Institute with AAALAC Certification (No. IACUC 2020137).
RESULTS AND CONCLUSION: In the subacute mouse model, the results of the rotarod test showed that the residence time of the mice on the accelerated rotating rod was significantly reduced compared with the control group 1 (P < 0.05). In the pole test, the time for the mice to move from the top of the pole to the bottom increased significantly compared with the control group 1 (P < 0.05). However, the number of tyrosine hydroxylase positive cells in the substantia nigra and the expression of tyrosine hydroxylase protein were not significantly different from those of the control group 1. In the chronic mouse model, there was no significant difference in the total time of rotarod stay and the pole test compared with the control group 2, but the number of tyrosine hydroxylase positive cells in the substantia nigra and the tyrosine hydroxylase protein expression level were significantly lower than those of the control group 2 (P < 0.05). Therefore, MPTP-induced subacute and chronic Parkinson’s model mouse models show partial similar phenotypes to human Parkinson's disease in sports injuries and pathological changes due to differences in modeling methods, suggesting that it is necessary to select an appropriate animal model based on the study purpose.

Key words: Parkinson’s disease, MPTP, subacute model, chronic model, tyrosine hydroxylase

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