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نتایج جستجو برای NQO1

تعداد نتایج: 799  
2018
David Siegel, Donna D Dehn, Samantha S Bokatzian, Kevin Quinn, Donald S Backos, Andrea Di Francesco, Michel Bernier, Nichole Reisdorph, Rafael de Cabo, David Ross,

NQO1 is a FAD containing NAD(P)H-dependent oxidoreductase that catalyzes the reduction of quinones and related substrates. In cells, NQO1 participates in a number of binding interactions with other proteins and mRNA and these interactions may be influenced by the concentrations of reduced pyridine nucleotides. NAD(P)H can protect NQO1 from proteolytic digestion suggesting that binding of reduce...

2015
Joseph M. Wu, Ardalan Oraee, Barbara B. Doonan, John T. Pinto, Tze-chen Hsieh,

BACKGROUND The NAD(P)H quinone oxidoreductase (NQO1) confers protection against semiquinones and also elicits oxidative stress. The C609T polymorphism of the NQO1 gene, designated NQO1*2, significantly reduces its enzymatic activity due to rapid degradation of protein. Since down regulation of NQO1 mRNA expression correlates with increased susceptibility for developing different types of canc...

2011
David Ross,

NQO1 catalyzes obligate two electron reduction of a wide variety of substrates. The most efficient substrates are quinones but the enzyme will also reduce quinoneimines, nitro and azo compounds. The enzyme functions via a hydride transfer mechanism and requires a pyridine nucleotide cofactor. Reduction proceeds with equal facility with both NADH and NADPH. NQO1 can generate antioxidant forms of...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2002
Gad Asher, Joseph Lotem, Rachel Kama, Leo Sachs, Yosef Shaul,

Wild-type p53 is a tumor-suppressor gene that encodes a short-lived protein that, upon accumulation, induces growth arrest or apoptosis. Accumulation of p53 occurs mainly by posttranslational events that inhibit its proteosomal degradation. We have reported previously that inhibition of NAD(P)H: quinone oxidoreductase 1 (NQO1) activity by dicoumarol induces degradation of p53, indicating that N...

2015
Eun-Taex Oh, Heon Joo Park,

NAD(P)H quinone oxidoreductase (NQO1), an obligatory two-electron reductase, is a ubiquitous cytosolic enzyme that catalyzes the reduction of quinone substrates. The NQO1- mediated two-electron reduction of quinones can be either chemoprotection/detoxification or a chemotherapeutic response, depending on the target quinones. When toxic quinones are reduced by NQO1, they are conjugated with glut...

Journal: :Genetics and molecular research : GMR 2010
H A Marjani, F Biramijamal, N Rakhshani, A Hossein-Nezhad, R Malekzadeh,

We evaluated the effect of NQO1 genetic variation on PAH-DNA adducts in esophageal squamous cell carcinoma (ESCC) in northeast Iran. Golestan Province in northeast of Iran has one of the highest esophageal cancer incidences in the world. The study included 93 ESCC cases and 50 control individuals who were seen at the clinical cancer center in Golestan province. NQO1 C609T genotypes were determi...

2017
Hairong He, Xiaoyu Zhai, Xiaomin Liu, Jie Zheng, Yajing Zhai, Fan Gao, Yonghua Chen, Jun Lu,

OBJECTIVE The NAD(P)H:quinone oxidoreductase (NQO1) C609T and C465T polymorphisms have been widely thought to be associated with the risk of acute leukemia (AL) in recent years, but the correlations are still unclear. A meta-analysis is generally acknowledged as one of the best methods for secondary research, and so it was applied in this study with the aim of elucidating how the NQO1 C609T and...

2016
Huanxian Ma, Lei He, Xianjie Shi, Maosheng Su, Mingyue Xu, Haida Shi,

Aims: With the purpose of investigating the association between NQO1 and ESR1 polymorphisms and the susceptibility to hepatocellular carcinoma (HCC), and providing scientific basis for the prevention and treatment of the disease, this case-control study was designed. Methods: The genotypes of NQO1, ESR1 gene polymorphisms were detected by polymerase chain reaction-restriction fragment length po...

2014
Yang Yang, Yan Zhang, Qunying Wu, Xuelian Cui, Zhenhua Lin, Shuangping Liu, Liyan Chen,

BACKGROUND NAD (P) H: quinone oxidoreductase 1 (NQO1) is a xenobiotic metabolizing enzyme that detoxifies chemical stressors and antioxidants, providing cytoprotection in normal tissues. However, high-level expression of NQO1 has been correlated with numerous human malignancies, suggesting a role in carcinogenesis and tumor progression. This study aimed to explore the clinicopathological signif...

Journal: :Cancer epidemiology, biomarkers & prevention : a publication of the American Association for Cancer Research, cosponsored by the American Society of Preventive Oncology 2010
Xiaoxia Hu, Zhengyan Zhang, Duanduan Ma, Phyllis C Huettner, L Stewart Massad, Loan Nguyen, Ingrid Borecki, Janet S Rader,

Host genetic variability modifies the risk of cervical cancer in women infected with oncogenic human papillomavirus (HPV). Studies have reported an association of the TP53 codon 72 arginine and cervical cancer, but the results are inconsistent. We examined the association of this single nucleotide polymorphism (SNP) in women with cervical cancer and cervical intraepithelial neoplasia grade 3, u...