Results 41 to 50 of about 196,005 (260)

Clinical application and drug resistance mechanism of gemcitabine

open access: yesFrontiers in Cell and Developmental Biology
Gemcitabine, as a nucleoside analog, exerts a broad-spectrum antitumor effect by interfering with DNA synthesis, but its clinical application is limited by drug resistance.
Xuanrui Zhang, Bing Qi, Jing Chen
doaj   +1 more source

Advances of Ribonucleotide Reductase Inhibitors on Cancer

open access: yesZhongliu Fangzhi Yanjiu, 2019
Ribonucleotide reductase (RR) regulates dNTP production, catalyzing the reduction of ribonucleotide into deoxyribonucleotide diphosphate, which is essential in DNA synthesis and cell proliferation.
WANG An'ge, WU Zhe, WANG Li, QIU Yunqing
doaj   +1 more source

γ-H2AX kinetics as a novel approach to high content screening for small molecule radiosensitizers. [PDF]

open access: yesPLoS ONE, 2012
BACKGROUND:Persistence of γ-H2AX after ionizing radiation (IR) or drug therapy is a robust reporter of unrepaired DNA double strand breaks in treated cells.
Shibo Fu   +11 more
doaj   +1 more source

3.3-Å resolution cryo-EM structure of human ribonucleotide reductase with substrate and allosteric regulators bound

open access: yeseLife, 2018
Ribonucleotide reductases (RNRs) convert ribonucleotides into deoxyribonucleotides, a reaction essential for DNA replication and repair. Human RNR requires two subunits for activity, the α subunit contains the active site, and the β subunit houses the ...
E. Brignole   +8 more
semanticscholar   +1 more source

P53 suppresses ribonucleotide reductase via inhibiting mTORC1

open access: yesOncoTarget, 2017
Balanced deoxyribonucleotides pools are essential for cell survival and genome stability. Ribonucleotide reductase is the rate-limiting enzyme for the production of deoxyribonucleotides. We report here that p53 suppresses ribonucleotide reductase subunit
Zhengfu He   +6 more
semanticscholar   +1 more source

Radiopharmaceuticals for Persistent or Recurrent Uterine Cervix Cancer

open access: yesFrontiers in Oncology, 2019
Uterine cervix cancers pose therapeutic challenges because of an overactive ribonucleotide reductase, which provides on-demand deoxyribonucleotides for DNA replication or for a DNA damage repair response.
Charles A. Kunos   +3 more
doaj   +1 more source

The newfound relationship between extrachromosomal DNAs and excised signal circles

open access: yesFEBS Letters, EarlyView.
Extrachromosomal DNAs (ecDNAs) contribute to the progression of many human cancers. In addition, circular DNA by‐products of V(D)J recombination, excised signal circles (ESCs), have roles in cancer progression but have largely been overlooked. In this Review, we explore the roles of ecDNAs and ESCs in cancer development, and highlight why these ...
Dylan Casey, Zeqian Gao, Joan Boyes
wiley   +1 more source

Reduction of Ribonucleotide Reductase Subunit RRM2 Potentially Impairs Gut Function of Woody Breast Broilers

open access: yesAnimal Research and One Health, EarlyView.
Woody breast compromises meat quality leading to reduced consumer appeal. Although its causes are unclear, improvements observed with certain dietary supplements suggest that gut health may influence woody breast development. Ribonucleotide reductase subunit RRM2 is vital for mitochondrial function and gastrointestinal integrity, and alteration in its ...
Majid Shakeri   +8 more
wiley   +1 more source

RRM2 Regulates Sensitivity to Sunitinib and PD‐1 Blockade in Renal Cancer by Stabilizing ANXA1 and Activating the AKT Pathway

open access: yesAdvanced Science, 2021
Renal cell carcinoma (RCC) is a malignant tumor of the kidneys. Approximately 70% of RCC cases are clear cell renal cell carcinoma with von Hippel–Lindau (VHL) gene mutation and activation of the vascular endothelial growth factor (VEGF) pathway ...
Wei Xiong   +5 more
doaj   +1 more source

A novel RRM2B mutation associated with mitochondrial DNA depletion syndrome

open access: yesMolecular Genetics and Metabolism Reports, 2022
Mitochondrial DNA (mtDNA) depletion syndromes are disorders characterized by infantile-onset, severe progression, and the drastic loss of mtDNA content in affected tissues.
Monica Fumagalli   +14 more
doaj   +1 more source

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