Role of the RNA-binding protein HuR in colon carcinogenesis.

Autor: de Silanes, Isabel López, Fan, Jinshui, Yang, Xiaoling, Zonderman, Alan B, Potapova, Olga, Pizer, Ellen S, Gorospe, Myriam
Předmět:
Zdroj: Oncogene; 10/16/2003, Vol. 22 Issue 46, p7146-7154, 9p
Abstrakt: Immunohistochemical analysis of paired tumor and normal tissue specimens revealed that the expression and cytoplasmic abundance of the RNA-binding protein HuR increased with malignancy, particularly in colon carcinomas. Interventions to modulate HuR expression in human RKO colon cancer cells altered gene expression profiles and identified ß-catenin mRNA as a novel HuR target. Subcutaneous injection of HuR-overexpressing RKO cells into nude mice produced significantly larger tumors than those arising from control populations; conversely, RKO cells expressing reduced HuR through small interference RNA- or antisense HuR-based approaches developed significantly more slowly. We propose that HuR-regulated target mRNA expression contributes to colon cancer growth. Our results suggest a pivotal function for HuR in colon carcinogenesis.Oncogene (2003) 22, 7146-7154. doi:10.1038/sj.onc.1206862 [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index