期刊
ONCOTARGET
卷 7, 期 28, 页码 43199-43219出版社
IMPACT JOURNALS LLC
DOI: 10.18632/oncotarget.9774
关键词
HSP90 inhibition; radiosensitization; colorectal cancer; DNA damage response; cell death
资金
- DFG [SFB 914]
- BMBF [02NUK024C, 02NUK017G, 02NUK004D, INST409/20-1 FUGG, INST409/22-1 FUGG]
- European Commission [FP7-249689]
The chaperone heat shock protein 90 (HSP90) crucially supports the maturation, folding, and stability of a variety of client proteins which are of pivotal importance for the survival and proliferation of cancer cells. Consequently, targeting of HSP90 has emerged as an attractive strategy of anti-cancer therapy, and it appears to be particularly effective in the context of molecular sensitization towards radiotherapy as has been proven in preclinical models of different cancer entities. However, so far the clinical translation has largely been hampered by suboptimal pharmacological properties and serious hepatotoxicity of first- and second-generation HSP90 inhibitors. Here, we report on NW457, a novel radicicol-derived member of the pochoxime family with reduced hepatotoxicity, how it inhibits the DNA damage response and how it synergizes with ionizing irradiation to induce apoptosis, abrogate clonogenic survival, and improve tumor control in models of colorectal cancer in vitro and in vivo.
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