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Cell Biosci. 2017 Apr 13;7:17. doi: 10.1186/s13578-017-0145-7. eCollection 2017.

The role of GLI1 for 5-Fu resistance in colorectal cancer.

Cell & bioscience

Lining Zhang, Ruolan Song, Dongsheng Gu, Xiaoli Zhang, Beiqin Yu, Bingya Liu, Jingwu Xie

Affiliations

  1. Shanghai Key Laboratory of Gastric Neoplasms, Shanghai Institute of Digestive Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025 China.
  2. Departments of Pediatrics, Biochemistry and Molecular Biology, Pharmacology and Toxicology, The Wells Center for Pediatrics Research and IU Simon Cancer Center, Indiana University School of Medicine, Indianapolis, IN 46202 USA.

PMID: 28413604 PMCID: PMC5390459 DOI: 10.1186/s13578-017-0145-7

Abstract

Colorectal cancer is a leading cause of cancer-related mortality worldwide, with Fluorouracil (5-FU)-based chemotherapy as the major treatment for advanced disease. Many patients with advanced colorectal cancer eventually succumb to the disease despite some patients responded initially to chemotherapy. Thus, identifying molecular mechanisms responsible for chemotherapy resistance will help design novel strategies to treat colorectal cancer. In this study, we established an acquired 5-FU resistant cell line, LoVo-R, from LoVo cells. Through exome sequencing, we discovered that elevated GLI1 signaling axis is a major genetic alteration in the 5-FU resistant cells. Hh signaling, a pathway essential for embryonic development, is an important regulator for residual cancer cells. We demonstrated that knockdown of

Keywords: Colorectal cancer; EMT; Fluorouracil; GLI1; Hedgehog

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