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Xu, Hong; Di Antonio, Marco; McKinney, Steven; Mathew, Veena; Ho, Brandon; O'Neil, Nigel J; Santos, Nancy Dos; Silvester, Jennifer; Wei, Vivien; Garcia, Jessica; Kabeer, Farhia; Lai, Daniel; Soriano, Priscilla; Banáth, Judit; Chiu, Derek S; Yap, Damian; Le, Daniel D; Ye, Frank B; Zhang, Anni; Thu, Kelsie; Soong, John; Lin, Shu-Chuan; Tsai, Angela Hsin Chin; Osako, Tomo; Algara, Teresa; Saunders, Darren N; Wong, Jason; Xian, Jian; Bally, Marcel B; Brenton, James D; Brown, Grant W; Shah, Sohrab P; Cescon, David; Mak, Tak W; Caldas, Carlos; Stirling, Peter C; Hieter, Phil; Balasubramanian, Shankar; Aparicio, Samuel
Nature communications, 02/2017, Letnik: 8, Številka: 1Journal Article
G-quadruplex DNAs form four-stranded helical structures and are proposed to play key roles in different cellular processes. Targeting G-quadruplex DNAs for cancer treatment is a very promising prospect. Here, we show that CX-5461 is a G-quadruplex stabilizer, with specific toxicity against BRCA deficiencies in cancer cells and polyclonal patient-derived xenograft models, including tumours resistant to PARP inhibition. Exposure to CX-5461, and its related drug CX-3543, blocks replication forks and induces ssDNA gaps or breaks. The BRCA and NHEJ pathways are required for the repair of CX-5461 and CX-3543-induced DNA damage and failure to do so leads to lethality. These data strengthen the concept of G4 targeting as a therapeutic approach, specifically for targeting HR and NHEJ deficient cancers and other tumours deficient for DNA damage repair. CX-5461 is now in advanced phase I clinical trial for patients with BRCA1/2 deficient tumours (Canadian trial, NCT02719977, opened May 2016).
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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Povezave do osebnih bibliografij avtorjev | Povezave do podatkov o raziskovalcih v sistemu SICRIS |
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Vir: Osebne bibliografije
in: SICRIS
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