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PARP Inhibitors - Trapped in a Toxic Love Affair.
It is often the case that when an investigational cancer drug first enters clinical development, its precise mechanism of action is unclear. This was the case for PARP inhibitors (PARPi) used to treat homologous ...
DNA-Repair Defects and Olaparib in Metastatic Prostate Cancer.
(MASSACHUSETTS MEDICAL SOC, 2015-10-29)
BACKGROUND: Prostate cancer is a heterogeneous disease, but current treatments are not based on molecular stratification. We hypothesized that metastatic, castration-resistant prostate cancers with DNA-repair defects would ...
Polθ inhibitors elicit BRCA-gene synthetic lethality and target PARP inhibitor resistance.
(NATURE RESEARCH, 2021-06-17)
To identify approaches to target DNA repair vulnerabilities in cancer, we discovered nanomolar potent, selective, low molecular weight (MW), allosteric inhibitors of the polymerase function of DNA polymerase Polθ, including ...
PARP inhibition enhances tumor cell-intrinsic immunity in ERCC1-deficient non-small cell lung cancer.
(AMER SOC CLINICAL INVESTIGATION INC, 2019-03-01)
The cyclic GMP-AMP synthase/stimulator of IFN genes (cGAS/STING) pathway detects cytosolic DNA to activate innate immune responses. Poly(ADP-ribose) polymerase inhibitors (PARPi) selectively target cancer cells with DNA ...
Dissecting PARP inhibitor resistance with functional genomics.
(CURRENT BIOLOGY LTD, 2019-02-01)
The poly-(ADP-ribose) polymerase (PARP) inhibitor (PARPi) olaparib was the first licenced cancer drug that targeted an inherited form of cancer, namely ovarian cancers caused by germline BRCA1 or BRCA2 gene mutations. ...
A decade of clinical development of PARP inhibitors in perspective.
(ELSEVIER, 2019-09-01)
Genomic instability is a hallmark of cancer, and often is the result of altered DNA repair capacities in tumour cells. DNA damage repair defects are common in different cancer types; these alterations can also induce ...
Analysis of Circulating Cell-Free DNA Identifies Multiclonal Heterogeneity of BRCA2 Reversion Mutations Associated with Resistance to PARP Inhibitors.
(AMER ASSOC CANCER RESEARCH, 2017-09-01)
Approximately 20% of metastatic prostate cancers harbor mutations in genes required for DNA repair by homologous recombination repair (HRR) such as BRCA2 HRR defects confer synthetic lethality to PARP inhibitors (PARPi) ...
PARP inhibitors: Synthetic lethality in the clinic.
(AMER ASSOC ADVANCEMENT SCIENCE, 2017-03-17)
PARP inhibitors (PARPi), a cancer therapy targeting poly(ADP-ribose) polymerase, are the first clinically approved drugs designed to exploit synthetic lethality, a genetic concept proposed nearly a century ago. Tumors ...
Modeling Therapy Resistance in BRCA1/2-Mutant Cancers.
(AMER ASSOC CANCER RESEARCH, 2017-09-01)
Although PARP inhibitors target BRCA1- or BRCA2-mutant tumor cells, drug resistance is a problem. PARP inhibitor resistance is sometimes associated with the presence of secondary or "revertant" mutations in BRCA1 or BRCA2 ...
PARP inhibitor combination therapy.
(ELSEVIER SCIENCE INC, 2016-12-01)
In 2014, olaparib (Lynparza) became the first PARP (Poly(ADP-ribose) polymerase) inhibitor to be approved for the treatment of cancer. When used as single agents, PARP inhibitors can selectively target tumour cells with ...