摘要
DNA甲基化是表观遗传学的主要形式,而DNA甲基转移酶( DNMTs)是DNA甲基化的主要调节酶,DNA甲基转移酶的激活参与了肿瘤的发生和发展过程,同时伴有肿瘤抑制基因的高甲基化沉默和低表达,是病人预后不良的标志;DNA甲基转移酶3b( DNMT3b)的多态性及吸烟所致的DNMTs表达的改变是肿瘤发生的危险因素,靶向DNMTs治疗由于其细胞毒性小,是当前研究的一个热点。本文就DNA甲基转移酶在肿瘤发病机制中的作用做一综述。
DNA methylation is the main profile of epigenetics .DNA methyltransferases ( DNMTs) is the main regulatory enzyme during DNA methylation .The activation of DNMTs ,the hypermethylation and low expres-sion of some tumor suppressor genes are involved in the carcinogenesis and development of various human canc -ers,which is a biomarker of poor prognosis .Both of the polymorphism of DNA methyltransferases ( DNMT3b) and tobacco smoking are risk factors of tumorgenesis .The targeted therapy of DNMTs is very popular due to its low cy-totoxity.This review will focus on new progress of the research on DNMTs in pathogenesis of carcinoma .
出处
《实用肿瘤学杂志》
CAS
2014年第1期75-80,共6页
Practical Oncology Journal