BRCA1 Expression Serves a Role in Vincristine Resistance in Colon Cancer Cells

Overview

Journal Oncol Lett

Specialty Oncology

Date 2017 Jul 12

PMID 28693174

Citations 3

Authors

Zhongjie Xu

LiRong Zhang

Affiliations

Soon will be listed here.

Abstract

The present study aimed to investigate the association between breast cancer susceptibility gene 1 (BRCA1) expression and drug resistance in colon cancer, with the specific aim of elucidating the underlying molecular mechanisms of vincristine (VCR) resistance in tumor cells. The HCT-8 human colon cancer cell line was used to establish the VCR-resistant HCT-8/V line by gradually increasing the concentration of VCR during cell culture. The relative mRNA and protein expression levels of BRCA1 in these colon cancer cell lines was assessed by reverse transcriptase-quantitative polymerase chain reaction (RT-qPCR) analysis and western blotting, respectively. Resistance to VCR was established in the HCT-8/V colon cancer cells, and RT-qPCR and western blot analysis revealed the expression of BRCA1 to be significantly higher in the VCR-resistant cells compared with their drug-sensitive counterparts (P<0.05). The decreased BRCA1 expression in these VCR-resistant cells may be associated with the drug resistance frequently observed in colon cancer.

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