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转突变型A53Tα-突触核蛋白基因的帕金森模型小鼠中脑的全基因组甲基化测序分析
Authors
刘琳
吴婷
林贤
黎昭
Publication date
1 January 2020
Publisher
Editorial Office of Journal of Sun Yat-sen University
Abstract
【目的】研究帕金森氏病(PD)致病基因SNCA在A53T位置突变后对转基因小鼠中脑多巴胺,神经元DNA甲基化修饰的影响。【方法】分别取转突变的人源α-突触核蛋白(hα-syn)即hA53Tα-syn基因小鼠和对照组小鼠的中脑组织,采用重亚硫酸盐测序法(BS-seq)分别对12月龄的转基因小鼠和非转基因(nTg)小鼠进行全基因组甲基化分析,随后筛选出差异甲基化区域(DMR)用于GO富集分析。【结果】通过对比分析,我们总计发现481个DMR,其中高甲基化与低甲基化DMR分别有257和224个,包括与泛素降解途径相关的Ubqln2、HECTD4、Rnf157基因,丝氨酸/苏氨酸蛋白激酶PINK1等基因。富集结果显示,差异甲基化基因总共映射到545个GO子条目,且主要富集于解剖结构发育、树突发育、神经系统发育、神经元投射等条目。【结论】帕金森致病基因SNCA在A53T位置的突变可诱导小鼠中脑多巴胺神经元DNA甲基化改变
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Last time updated on 15/10/2024