Expression of microRNA-100 and its relation with prognosis of colorectal cancer
10.3760/cma.j.issn.0253-3766.2015.08.008
- VernacularTitle:微小RNA-100表达与结直肠癌患者临床病理特征和预后的相关性
- Author:
Shanxin ZHANG
1
;
Wei YUAN
;
Wanyan TANG
;
Changqing XU
;
Jie MA
Author Information
1. 山东大学附属千佛山医院消化内科
- Keywords:
Colorectal neoplasms;
microRNA-100;
Neoplasm metastasis;
Cell proliferation;
Neoplasm staging;
Prognosis
- From:
Chinese Journal of Oncology
2015;(8):603-608
- CountryChina
- Language:Chinese
-
Abstract:
Objective The aim of this study was to investigate the expression of microRNA?100 ( miR?100) and its relation with prognosis in colorectal cancer ( CRC) . Methods The expression of miR?100 was analyzed by quantitative real?time PCR ( qRT?PCR) in 172 CRC tissue samples. The relation of miR?100 expression patterns with clinical pathological significance in CRC was analyzed. The effects of alterations of miR?100 expression and its consequences on CRC cell proliferation, apoptosis and migration were demonstrated in cells cultured in vitro. Results The relative expression of miR?100 in CRC tissues and peritumoral tissues were -6. 185 ± 1. 921 and -3. 698 ± 1. 786, respectively, with a significant difference between the two groups( P<0.01) . There was a significant difference between the relative expression of miR?100 in CRC with lymph node metastasis (-5.706±1.809) and without lymph node metastasis (-6.775± 1.902, P<0.01). The relative expression of miR?100 in tumors of different TNM stages were -7.267±1.888 in stage Ⅰ, -6.443±1.859 in stageⅡ,-5.923±1.796 in stageⅢ, and-4.639±1.516 in stageⅣ, with a significant difference among them(P<0.01). Different differentiation grades showed different expression of miR?100, i.e. -7. 389 ± 1. 828 in well differentiated tumors, -6. 095 ± 1. 843 in moderately differentiated tumors, and -5.476±2.088 in poorly differentiated tumors (P<0.01). There was no significant correlation between miR?100 expression and overall survival rates of the CRC patients (P=0.179). Overexpression of miR?100 in the CRC cell line HCT?8 inhibited cell proliferation, but promoted cell apoptosis and migration. Conclusions The expression of miR?100 is correlated with lymph node metastasis, TNM stage and differentiation grade, and may be a potential biomarker indicating the development of CRC.
