Wnt/β-catenin信号通路对孤独症模型大鼠重复呆板样行为的影响

doi:10.13418/j.issn.1001-165x.2015.04.012

中国临床解剖学杂志 ›› 2015, Vol. 33 ›› Issue (4): 430-433.doi: 10.13418/j.issn.1001-165x.2015.04.012

Wnt/β-catenin信号通路对孤独症模型大鼠重复呆板样行为的影响

张应花^1,2，　贾云杰³，　张天然¹，　崔卫刚^4，1，　王中平⁴，　文小军¹

1.新乡医学院基础医学院解剖学教研室，河南新乡 453003；　2.新乡医学院河南省医用组织再生重点实验室，河南新乡 453003; 3.新乡医学院图书馆，河南新乡 453003； 4.复旦大学上海医学院人体解剖与组织胚胎学系，上海 200032

收稿日期:2015-01-06 出版日期:2015-07-25 发布日期:2015-08-14
作者简介:张应花（1980-），女，河南许昌人，讲师，博士，主要从事神经发育障碍性疾病方面的研究，E-mail：zyhflo2013@163.com
基金资助:
国家自然科学基金（81301174，81260211），新乡医学院博士科研启动基金（No.505003），2013年国家级大学生创新创业训练计划资助项目（201310472070）

Effects of Wnt/β-catenin on repetitive/stereotypic-like movements in an autistic model induced by prenatal exposure to valproic acid

ZHANG Ying-hua ^1,2, JIA Yun-jie³, ZHANG Tian-ran¹, CUI Wei-gang^{4, 1}, WANG Zhong-ping⁴, WEN Xiao-jun¹

1.Department of Human Anatomy, Xinxiang Medical University, Xinxiang 453003, China; 2.Key Laboratory for Medical Tissue Regeneration of Henan Province, College of Basic Medicine, Xinxiang Medical University, Xinxiang, Henan 453003; 3. Library of Xinxiang Medical University, Xinxiang 453003, China; 4.Department of Anatomy, Histology and Embryology, Shanghai Medical College, Fudan University, Shanghai 200032, China

Received:2015-01-06 Online:2015-07-25 Published:2015-08-14

摘要/Abstract

摘要：

目的　探讨Wnt/β-catenin信号通路对孤独症发生过程中重复呆板样行为的影响。方法　利用丙戊酸（valproic acid，VPA）孤独症动物模型，检测了经典Wnt信号通路关键信号分子β-catenin及其负性调节因子GSK-3β在孤独症模型大鼠小脑脑区的表达变化；同时检测孤独症模型大鼠重复呆板样行为变化。Western blotting法检测GSK-3β、β-catenin总蛋白及磷酸化蛋白表达，运用旷场实验检测重复呆板样行为持续的时间、次数。结果　与对照组相比，在小脑脑区模型组GSK-3β磷酸化蛋白表达增加，β-catenin磷酸化蛋白表达减少；重复呆板样行为持续的时间、次数均增加。结论　孤独症大鼠小脑脑区经典wnt信号通路活性增加，运动亢进，提示经典Wnt信号通路活性增加可能导致重复呆板样行为变化，进而导致对孤独症的易感性增加。

关键词: , 孤独症, Wnt/&beta, -catenin通路, 丙戊酸, 重复呆板样行为

Abstract:

Objective　To investigate the effects of Wnt/β-catenin on repetitive/stereotypic-like movements in autism. 　Methods　With an autistic model induced by prenatal exposure to valproic acid（VPA）, we detected the expression of GSK-3β, β-catenin, the signaling molecules of the canonical Wnt pathway in the cerebellum of autistic rats. The expression levels of GSK-3β, phosphorylated GSK-3β, β-catenin, phosphorylated β-catenin were observed by Western blotting. The number of repetitive/stereotypic-like behaviors and time engaged in repetitive/stereotypic-like movements were observed by open field. Results　The phospholated protein levels of GSK-3β were higher, whereas those of β-catenin were lower in VPA-exposed group than those in the control group. In contrast, the number of repetitive/stereotypic-like behaviors and time engaged in repetitive/stereotypic-like movements were significantly higher in the animals treated with VPA than those in the control group.　Conclusion　Hyperkinetics and increased activity of the canonical Wnt pathway in cerebellum of autistic rats suggest that increased activity of the canonical Wnt pathway may result in repetitive/stereotypic-like mobility disorders and further contribute to the susceptibility to autism.

Key words: Autism, Wnt/β-catenin pathway, Valproic acid, Repetitive/stereotypic-like movement

张应花,贾云杰,张天然,崔卫刚,王中平,文小军. Wnt/β-catenin信号通路对孤独症模型大鼠重复呆板样行为的影响[J]. 中国临床解剖学杂志, 2015, 33(4): 430-433.

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Wnt/β-catenin信号通路对孤独症模型大鼠重复呆板样行为的影响

Effects of Wnt/β-catenin on repetitive/stereotypic-like movements in an autistic model induced by prenatal exposure to valproic acid

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