目的:本研究利用全基因组DNA甲基化测序技术,探讨DNA甲基化修饰改变与童年创伤和抑郁症之间的关系,初步了解DNA甲基化在童年创伤和抑郁症机制中的作用。
方法:本研究分为伴童年创伤抑郁症患者组、不伴童年创伤抑郁症患者组、伴童年创伤健康成人组和不伴童年创伤健康对照组共四组,每组各3例。分别抽提各样本外周血组织中的基因组DNA,并采用MeDIP-Seq (Methylated DNA Immunoprecipitation sequencing)测序技术进行DNA甲基化测序。
结果:通过运用MeDIP-seq测序技术,本阶段获得测序深度足够和高分辨率的外周血全基因组DNA甲基化谱。本次测序结果的整体原始数据高达60Gb,组间比较、GO (gene ontology)功能分析和Pathway分析后整体数据约80Gb。根据分析伴童年创伤抑郁症患者组与伴童年创伤健康成人组相比呈低甲基化改变的基因有11,623个,呈高甲基化改变的基因有12,772个。伴童年创伤抑郁症患者组与不伴童年创伤抑郁症患者组相比呈低甲基化改变的基因有12,838个,呈高甲基化改变的基因有12,709个。伴童年创伤健康成人组和不伴童...
【英文摘要】
Objective:Using genome-wide DNA methylation sequencing technology, we preliminary investigated aberrant DNA methylation changes in depression patients with or without childhood trauma to explore the role of DNA methylation in the pathogenesis of depression.
Methods:Genomic DNA was extracted from peripheral blood of depression cases (n=6) with or without childhood trauma and adult healthy controls (n=6) with and without childhood trauma normal, every group contains3individuals. DNA methylation was quanti...