Results 31 to 40 of about 60,395 (277)

DNA single-strand break repair and spinocerebellar ataxia with axonal neuropathy-1 [PDF]

open access: yes, 2007
DNA single-strand breaks (SSBs) are the commonest DNA lesions arising spontaneously in cells, and if not repaired may block transcription or may be converted into potentially lethal/clastogenic DNA double-strand breaks (DSBs).
Arnaudeau   +82 more
core   +1 more source

A Novel Copper(II) Indenoisoquinoline Complex Inhibits Topoisomerase I, Induces G2 Phase Arrest, and Autophagy in Three Adenocarcinomas

open access: yesFrontiers in Oncology, 2022
Topoisomerases, targets of inhibitors used in chemotherapy, induce DNA breaks accumulation leading to cancer cell death. A newly synthesized copper(II) indenoisoquinoline complex WN197 exhibits a cytotoxic effect below 0.5 µM, on MDA-MB-231, HeLa, and HT-
Caroline Molinaro   +6 more
doaj   +1 more source

PROSPECTS FOR SEARCHING MULTITARGET TOPOISOMERASE INHIBITORS WITH ANTITUMOR PROPERTIES

open access: yesСибирский онкологический журнал, 2019
Purpose of research: to identify the prospects of search for new antitumor non-camptothecin inhibitors of topoisomerase I/II among the various chemical compounds based on the analysis of side effects.Material and Methods.
M. I. Treshchalin   +2 more
doaj   +1 more source

Evaluation of melanin-targeted radiotherapy in combination with radiosensitizing drugs for the treatment of melanoma [PDF]

open access: yes, 2014
The incidence of malignant melanoma is rising faster than that of any other cancer in the United States. An [131I]-labeled benzamide - [131I]MIP-1145 - selectively targets melanin, reduces melanoma tumor burden and increases survival in preclinical ...
Babich, John   +5 more
core   +1 more source

Ataxia-Telangiectasia Mutated and the Mre11-Rad50-NBS1 Complex:Promising Targets for Radiosensitization [PDF]

open access: yes, 2012
Radiotherapy plays a central part in cancer treatment, and use of radiosensitizing agents can greatly enhance this modality. Although studies have shown that several chemotherapeutic agents have the potential to increase the radiosensitivity of tumor ...
Fujiwara, Toshiyoshi   +2 more
core   +1 more source

Topoisomerase I inhibitors: camptothecins and beyond [PDF]

open access: yesNature Reviews Cancer, 2006
Nuclear DNA topoisomerase I (TOP1) is an essential human enzyme. It is the only known target of the alkaloid camptothecin, from which the potent anticancer agents irinotecan and topotecan are derived. As camptothecins bind at the interface of the TOP1-DNA complex, they represent a paradigm for interfacial inhibitors that reversibly trap macromolecular ...
openaire   +2 more sources

Heterocyclic bibenzimidazole derivatives as topoisomerase I inhibitors [PDF]

open access: yesBioorganic & Medicinal Chemistry Letters, 2000
A series of 2'-heterocyclic derivatives of 5-phenyl-2,5'-1H-bibenzimidazoles were evaluated for topoisomerase I poisoning activity and cytotoxicity. Topo I poisoning activity was associated with 2'-derivatives that possessed a hydrogen atom capable of hydrogen bond formation, suggesting that the interatomic distances between such hydrogen atoms and the
Jin, S.   +6 more
openaire   +2 more sources

Novel DNA topoisomerase IIα inhibitors from combined ligand- and structure-based virtual screening.

open access: yesPLoS ONE, 2014
DNA topoisomerases are enzymes responsible for the relaxation of DNA torsional strain, as well as for the untangling of DNA duplexes after replication, and are important cancer drug targets.
Malgorzata N Drwal   +5 more
doaj   +1 more source

Assessment of the genotoxicity of quinolone and fluoroquinolones contaminated soil with the Vicia faba micronucleus test [PDF]

open access: yes, 2012
The genotoxicity of quinolone and fluroquinolones was assessed using the micronucleus (MN) test on Viciafaba roots by direct contact exposure to a solid matrix.
Bousquet-Mélou, Alain   +7 more
core   +3 more sources

Relationship between protein biomarkers of chemotherapy response and microsatellite status, tumor mutational burden and PD-L1 expression in cancer patients. [PDF]

open access: yes, 2020
Chemotherapy and checkpoint inhibitor immunotherapies are increasingly used in combinations. We determined associations between the presence of anti-PD-1/PD-L1 therapeutic biomarkers and protein markers of potential chemotherapy response.
Arguello, David   +5 more
core   +2 more sources

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