Genetic polymorphisms of methionine synthase,methylation of CHD5,and their association with breast cancer mobidity
- VernacularTitle:甲硫氨酸合成酶多态性及CHD5基因甲基化与乳腺癌发病的关系
- Author:
Linlin HAN
;
Lin HOU
;
Jinlian SONG
- Publication Type:Journal Article
- Keywords:
breast cancer;
genetic polymorphism;
DNA methylation;
methionine synthase;
CHD5
- From:China Oncology
1998;0(04):-
- CountryChina
- Language:Chinese
-
Abstract:
Background and purpose:CpG methylation in promoter region is an essential mechanism for the dysfunction of the tumor suppression gene.Folate metabolism provides active methyl for organism methylation.Methionine synthase(MS) plays a vital role in the process of folate metabolism.This study aimed to explore the genetic polymorphism of MS, CHD5 methylation and their association with breast cancer morbidity.Methods:Fortyseven patients with primary breast cancer, 52 healthy subjects and 15 breast hyperplasia patients were enrolled in this experiment.The mRNA expression of CHD5 was determined by reverse transcription PCR(RT-PCR).Methylationspecific PCR(MSP) was used to detect the methylation status of CHD5.Polymorphisms in the MS gene were analyzed through the polymerase chain reaction-restriction fragment length polymorphism(PCR-RFLP).Results:The mRNA expression of CHD5 in breast cancer tissues(0.27?0.19) and adjacent non-cancerous tissues(0.33?0.17) were both significantly lower than that in the breast hyperplasia tissues(0.67?0.14)(P
