医学
基因组不稳定性
合成致死
DNA修复
DNA损伤
生物标志物
癌症
第1周
计算生物学
癌症研究
DNA
生物信息学
基因
内科学
遗传学
细胞周期
生物
细胞周期蛋白依赖激酶1
作者
Patrick G. Pilié,Chad Tang,Gordon B. Mills,Timothy A. Yap
标识
DOI:10.1038/s41571-018-0114-z
摘要
Genomic instability is a key hallmark of cancer that arises owing to defects in the DNA damage response (DDR) and/or increased replication stress. These alterations promote the clonal evolution of cancer cells via the accumulation of driver aberrations, including gene copy-number changes, rearrangements and mutations; however, these same defects also create vulnerabilities that are relatively specific to cancer cells, which could potentially be exploited to increase the therapeutic index of anticancer treatments and thereby improve patient outcomes. The discovery that BRCA-mutant cancer cells are exquisitely sensitive to inhibition of poly(ADP-ribose) polymerase has ushered in a new era of research on biomarker-driven synthetic lethal treatment strategies for different cancers. The therapeutic landscape of antitumour agents targeting the DDR has rapidly expanded to include inhibitors of other key mediators of DNA repair and replication, such as ATM, ATR, CHK1 and CHK2, DNA-PK and WEE1. Efforts to optimize these therapies are ongoing across a range of cancers, involving the development of predictive biomarker assays of responsiveness (beyond BRCA mutations), assessment of the mechanisms underlying intrinsic and acquired resistance, and evaluation of rational, tolerable combinations with standard-of-care treatments (such as chemotherapeutics and radiation), novel molecularly targeted agents and immune-checkpoint inhibitors. In this Review, we discuss the current status of anticancer therapies targeting the DDR. Inhibition of poly(ADP-ribose) polymerase (PARP) is the paradigmatic example of synthetic lethal therapy and is predicated on exploiting DNA repair deficiencies that are a hallmark of cancer. In this Review, the authors review the progress made to date with PARP inhibitors and describe the expanding landscape of novel anticancer therapies targeting the DNA damage response. Potential predictive biomarkers, mechanisms of resistance and combinatorial strategies are discussed.
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