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Expression and prognostic significance of miR-375 and miR-221 in liver cancer.


ABSTRACT: The purpose of this study was to investigate the expression of miR-375 and miR-221 in liver cancer, and examine the correlations with pathological parameters and prognosis. We collected tumors and tumor-adjacent normal tissue from 70 patients with liver cancer admitted to the Department of General Surgery of Zhejiang Hospital. The expression of miR-375 by RT-qPCR was significantly lower in liver cancer tissues than that in the tumor-adjacent normal tissues, and the low expression was correlated with the lymphatic metastasis and TNM stage. By contrast, the expression of miR-221 was significantly higher in liver cancer than that in the tumor-adjacent tissues, and the high expression was correlated with the lymphatic metastasis and TNM stage. The overall 5-year survival rate of patients was 12.9% (9/70). Single-factor survival analysis revealed that miR-375 and miR-221 were the factors affecting the overall survival rate of liver cancer (P<0.05) and multivariate survival analysis by Cox proportional hazards model showed that miR-375 and miR-221 were the independent factors affecting the survival time of patients with liver cancer. Low expression of miR-375 and high expression of miR-221 are closely correlated with the occurrence and development of liver cancer, especially lymphatic metastasis and TNM stage. Thus, miR-375 and miR-221 can serve as reference biomarkers for guiding the treatment of liver cancer and for estimating prognosis.

SUBMITTER: Xie D 

PROVIDER: S-EPMC5530117 | biostudies-other | 2017 Aug

REPOSITORIES: biostudies-other

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