alexa MiR-22 regulates 5-FU sensitivity by inhibiting autophagy and promoting apoptosis in colorectal cancer cells.
Genetics & Molecular Biology

Genetics & Molecular Biology

Gene Technology

Author(s): Zhang H, Tang J, Li C, Kong J, Wang J,

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Abstract Autophagy has become one of the most important mechanisms of chemotherapy resistance by supporting the survival of tumor cells under metabolic and therapeutic stress. Here, we showed that miR-22 inhibited autophagy and promoted apoptosis to increase the sensitivity of colorectal cancer (CRC) cells to 5-fluorouracil (5-FU) treatment both in vitro and in vivo. B-cell translocation gene 1 (BTG1) was identified as a new target of miR-22, which could reverse the inhibition of autophagy induced by miR-22. Thus, miR-22 may function as an important switch between autophagy and apoptosis to regulate 5-FU sensitivity through post-transcriptional silencing of BTG1. Promisingly, miR-22 could be considered as both a predictor of 5-FU sensitivity for personalized treatment and a therapeutic target for colorectal cancer. Copyright © 2014 Elsevier Ireland Ltd. All rights reserved. This article was published in Cancer Lett and referenced in Gene Technology

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