Abstract
Although non-small cell lung cancer (NSCLC) patients benefit from standard taxane-platin chemotherapy, many relapse, developing drug resistance. We established preclinical taxane-platin-chemoresistance models and identified a 35-gene resistance signature, which was associated with poor recurrence-free survival in neoadjuvant-treated NSCLC patients and included upregulation of the JumonjiC lysine demethylase KDM3B. In fact, multi-drug-resistant cells progressively increased the expression of many JumonjiC demethylases, had altered histone methylation, and, importantly, showed hypersensitivity to JumonjiC inhibitors in vitro and in vivo. Increasing taxane-platin resistance in progressive cell line series was accompanied by progressive sensitization to JIB-04 and GSK-J4. These JumonjiC inhibitors partly reversed deregulated transcriptional programs, prevented the emergence of drug-tolerant colonies from chemo-naive cells, and synergized with standard chemotherapy in vitro and in vivo. Our findings reveal JumonjiC inhibitors as promising therapies for targeting taxane-platin-chemoresistant NSCLCs.
Original language | English (US) |
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Pages (from-to) | 1669-1684 |
Number of pages | 16 |
Journal | Cell Reports |
Volume | 19 |
Issue number | 8 |
DOIs | |
State | Published - May 23 2017 |
Externally published | Yes |
Keywords
- GSK-J4
- JIB-04
- Jumonji demethylases
- KDM
- demethylase inhibitors
- drug resistance
- histone demethylases
- histone methylation
- lung cancer
- taxane-platin chemotherapy
ASJC Scopus subject areas
- General Biochemistry, Genetics and Molecular Biology