Relationship between the single nucleotide polymorphisms in has-mir-125a-5p rs12975333 and expression of has-mir-125a-5p in Han Chinese female breast cancer patients
10.3760/cma.j.issn.1007-631X.2011.07.021
- VernacularTitle:汉族女性乳腺癌患者has-mir-125a-5p基因的rs12975333位点的单核苷酸多态性及其在癌组织的表达研究
- Author:
Meizhu ZHENG
;
Ling WEI
;
Gang ZHENG
;
Dianbin MU
;
Li YANG
;
Wenshu ZUO
- Publication Type:Journal Article
- Keywords:
Breast neoplasms;
microRNAs;
Polymorphism;
single nucleotide
- From:
Chinese Journal of General Surgery
2011;26(7):596-599
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the relationship between the single nucleotide polymorphisms (SNPs) in has-mir-125a-5p rs12975333 and the expression of has-mir-125a-5p and clinicopathological cheracteristics of female breast cancer in Han Chinese women. Methods Genomic DNA was extracted from peripheral blood lymphocytes. taqman-MGB assay was used to type breast cancer of 338 cases and 338 controls. Expression levels of has-mir-125a-5p in 289 biopsies were examined using stem-loop real-time RTPCR and the clinicopathological cheracteristics of breast cancer were evaluated. Result The gene frequencies (GG,GT,TT) of rsl2975333 in the patients were GG 273 (94. 5% ), GT 16 (5.5%),TT 0(0%), while in breast fibroadenoma and controls there were GG 49 ( 100% ), 338 (100%). The expression level of has-mir-125a-5p in breast cancer(0. 19 ±0. 04) was lower than that in the matched nontumor adjacent tissue specimens (0. 37 ± 0. 05 ) ( P = 0. 04 ) .The expression level of minor T allele of mature miR-125a in breast cancer patients was lower than that in has-mir-125a-5p-GG carying(P =0.022). The expression of has-mir-125a-5p was down-regulated in primary breast cancer, especially in elder patients ( P = 0. 036) and lymph node metastasis groups (P = 0. 001) and with negative ERBB2 (P = 0. 007), ERBB3 (P =0. 04). Conclusions rs12975333 polymorphisms in has-mir-125a-5p gene may work as a risk factor of breast cancer in Han Chinese women. The altered expression of has-mir-125a-5p might play a role in the pathogenesis and progression of breast carcinoma.
