The fluorescence emission properties of dGuo-C8-AAF, dGuo-C8-AF and the imidazole ring-opened products of dGuo-C8-AF indicate a different dynamic structure for the various compounds.

abstract：:The methylation status of the rat gamma-glutamyl transpeptidase (GGT) gene was investigated during liver development and hepatocarcinogenesis. The analysis with the restriction enzymes MspI/HpaII revealed that, during ontogeny, there is a progressive methylation of the GGT gene that coincides with a progressive decrea...

journal_title：Carcinogenesis

authors： Baik JH,Griffiths S,Giuili G,Manson M,Siegrist S,Guellaen G

更新日期：1991-06-01 00:00:00

abstract：:Epidemiological evidence suggests that the presence of human papillomaviruses (HPV), when combined with smoking behaviors, considerably enhances the risk of developing oral, cervical, vulvar, and/or anal carcinomas. It is well established that the cytochrome P450 (CYP), microsomal epoxide hydrolase (mEH), and other bi...

journal_title：Carcinogenesis

authors： Farin FM,Bigler LG,Oda D,McDougall JK,Omiecinski CJ

更新日期：1995-06-01 00:00:00

abstract：:Transforming growth factor beta1 (TGFbeta1) expression is elevated by tumor promoters in the mouse skin, but its role in tumor promotion has not been well defined. To investigate this, we have compared TGFbeta1+/+ and +/- mice in a two-stage skin chemical carcinogenesis protocol. Surprisingly, TGFbeta1+/- mice had few...

journal_title：Carcinogenesis

authors： Pérez-Lorenzo R,Markell LM,Hogan KA,Yuspa SH,Glick AB

更新日期：2010-06-01 00:00:00

abstract：:2-Amino-1-methyl-6-phenylimidazo[4,5-b]pyridine (PhIP), the most abundant heterocyclic amine produced during the cooking of meats and fish, is suspected to be a human carcinogen. Metabolic activation of PhIP is primarily mediated by the enzyme cytochrome P450 (CYP) 1A2. Metabolism of PhIP by CYP1A2 differs considerabl...

journal_title：Carcinogenesis

authors： Cheung C,Loy S,Li GX,Liu AB,Yang CS

更新日期：2011-02-01 00:00:00

abstract：:The enzyme O6-methylguanine-DNA methyltransferase repairs alkylation-induced DNA damage, O6-methylguanine and O4-methylthymine, the former being formed more frequently. Previously, by means of gene targeting, we generated mice in which alleles for methyltransferase were disrupted. We now use these mouse lines, which a...

journal_title：Carcinogenesis

authors： Iwakuma T,Sakumi K,Nakatsuru Y,Kawate H,Igarashi H,Shiraishi A,Tsuzuki T,Ishikawa T,Sekiguchi M

更新日期：1997-08-01 00:00:00

abstract：:The effects of consumption of glucosinolate-containing Brussels sprouts on plasma and urinary glutathione S-transferase (GST) class-alpha and -pi were investigated. Five male and five female non-smoking volunteers were randomly assigned to two groups in a crossover design. Five persons started on a glucosinolate-free ...

journal_title：Carcinogenesis

authors： Nijhoff WA,Mulder TP,Verhagen H,van Poppel G,Peters WH

更新日期：1995-04-01 00:00:00

abstract：:Telomeres are critical in maintaining chromosome and genomic stability. Arsenic, a human carcinogen as well as an anticancer agent, is known for its clastogenicity. To better understand molecular mechanisms of arsenic actions, we investigated arsenite effects on telomere and telomerase and determined cell growth and a...

journal_title：Carcinogenesis

authors： Zhang TC,Schmitt MT,Mumford JL

更新日期：2003-11-01 00:00:00

abstract：:Human cancers are often associated with numerical and structural chromosomal instability. Structural chromosomal aberrations (CAs) in peripheral blood lymphocytes (PBL) arise as consequences of direct DNA damage or due to replication on a damaged DNA template. In both cases, DNA repair is critical and inter-individual...

journal_title：Carcinogenesis

authors： Vodicka P,Musak L,Frank C,Kazimirova A,Vymetalkova V,Barancokova M,Smolkova B,Dzupinkova Z,Jiraskova K,Vodenkova S,Kroupa M,Osina O,Naccarati A,Palitti F,Försti A,Dusinska M,Vodickova L,Hemminki K

更新日期：2015-11-01 00:00:00

abstract：:Insulin-like growth factor 1 receptor (IGF-1R) activation is required for prostate cell proliferation. Prostate cancer is one of the most commonly diagnosed malignant tumors in Western countries. Overexpression of IGF-1R in prostate cancer is associated with tumor growth. These suggest that IGF-1R inhibitory agents ma...

journal_title：Carcinogenesis

authors： Fang J,Zhou Q,Shi XL,Jiang BH

更新日期：2007-03-01 00:00:00

abstract：:Targeting tumor-initiating, drug-resistant populations of cancer stem cells (CSC) with phytochemicals is a novel paradigm for cancer prevention and treatment. We herein employed a phenotypic drug discovery approach coupled to mechanism-of-action profiling and target deconvolution to identify phenolic components of ext...

journal_title：Carcinogenesis

authors： Corominas-Faja B,Cuyàs E,Lozano-Sánchez J,Cufí S,Verdura S,Fernández-Arroyo S,Borrás-Linares I,Martin-Castillo B,Martin ÁG,Lupu R,Nonell-Canals A,Sanchez-Martinez M,Micol V,Joven J,Segura-Carretero A,Menendez JA

更新日期：2018-04-05 00:00:00

abstract：:This study evaluated the influence of genetic polymorphisms in the microsomal epoxide hydrolase (mEPHX) gene on lung cancer risk in a case-control study of two different ethnic groups, Mexican-Americans and African-Americans. There were 138 lung cancer cases (60 Mexican-American and 78 African-American) and 148 contro...

journal_title：Carcinogenesis

authors： Wu X,Gwyn K,Amos CI,Makan N,Hong WK,Spitz MR

更新日期：2001-06-01 00:00:00

abstract：:The pulmonary adenoma susceptibility 1 (Pas1) gene affects susceptibility to the development of lung adenomas in mice with a subset of the adenomas progressing to adenocarcinoma (ADC). In this study, genotype distributions for 10 polymorphisms in the human counterparts for three mouse candidate Pas1 genes, KRAS, CASC1...

journal_title：Carcinogenesis

authors： Kohno T,Kunitoh H,Suzuki K,Yamamoto S,Kuchiba A,Matsuno Y,Yanagitani N,Yokota J

更新日期：2008-05-01 00:00:00

abstract：:The tumor suppressor PTEN antagonizes phosphatidylinositol 3-kinase (PI3K), which contributes to tumorigenesis in many cancer types. While PTEN mutations occur in some melanomas, their precise mechanistic consequences have yet to be elucidated. We sought to identify novel downstream effectors of PI3K using a combinati...

journal_title：Carcinogenesis

authors： Packer L,Pavey S,Parker A,Stark M,Johansson P,Clarke B,Pollock P,Ringner M,Hayward N

更新日期：2006-09-01 00:00:00

abstract：:7,8-Dihydro-8-oxo-2'-deoxyguanosine (8-oxo-dG) was measured as an indicator of nickel-induced oxidative base damage in the presence of H2O2. Heterochromatic proteins isolated from Chinese hamster liver cells enhanced the formation of 8-oxo-dG induced by NiCl2 and H2O2 in vitro, whereas euchromatic proteins inhibited t...

journal_title：Carcinogenesis

authors： Huang X,Kitahara J,Zhitkovich A,Dowjat K,Costa M

更新日期：1995-08-01 00:00:00

abstract：:We report evidence that the mutagen and carcinogen 3-amino-1-methyl-5H pyrido[4,3b]indole (Trp P-2) is a substrate for co-oxidation by prostaglandin H synthase (PHS) in ram seminal vesicle (RSV) microsomes. Trp P-2 serves as a reducing cofactor for the hydroperoxidase activity of PHS as shown by the concentration-depe...

journal_title：Carcinogenesis

authors： Petry TW,Krauss RS,Eling TE

更新日期：1986-08-01 00:00:00

abstract：:The androgen receptor (AR) is involved in the development and progression of prostate cancer. In order to find new compounds that may present novel mechanisms to attenuate the function of AR, we investigated the effect of a natural flavonoid chemical, quercetin, on androgen action in an androgen-responsive LNCaP prost...

journal_title：Carcinogenesis

authors： Xing N,Chen Y,Mitchell SH,Young CY

更新日期：2001-03-01 00:00:00

abstract：:Covalent binding of [7-3H]styrene (S) to DNA in vivo was measured and evaluated in a quantitative manner in order to investigate whether DNA adduct formation could form a mechanistic basis for tumor induction in a carcinogenicity bioassay. [7-3H]S was administered by inhalation in a closed chamber to male and female C...

journal_title：Carcinogenesis

authors： Cantoreggi S,Lutz WK

更新日期：1993-03-01 00:00:00

abstract：:Primary hepatocyte cultures from six human donors were established and their abilities to metabolize the polycyclic aromatic hydrocarbon carcinogen benzo[a]pyrene (B[a]P) were examined. Cells from each donor were plated at similar densities (1 X 10(7) cells/100 mm dish). All cultures metabolized B[a]P to a significant...

journal_title：Carcinogenesis

authors： Moore CJ,Gould MN

更新日期：1984-12-01 00:00:00

abstract：:Sprague-Dawley rats were treated with N-nitrosomorpholine (NNM) alone (7 weeks, 120 mg/l in drinking water), with NNM followed by phenobarbital (PB) (750 mg/l for 6 weeks) or PB alone. The livers from these animals were investigated for glycogen content and activities of glucose-6-phosphatase, glucose-6-phosphate dehy...

journal_title：Carcinogenesis

authors： Mayer D,Moore MA,Bannasch P

更新日期：1983-01-01 00:00:00

abstract：:The localization of benzo[a]pyrene-deoxyguanosine adducts was studied by indirect immunofluorescence in cultured BALB/c epidermal cells exposed to (+/-) 7 alpha, 8 alpha-dihydroxy-9 alpha, 10 alpha-epoxy-7,8,9,10-tetrahydrobenzo[a]pyrene (the anti-isomer) utilizing an antiserum specific for the major benzo[a]pyrene-de...

journal_title：Carcinogenesis

authors： Poirier MC,Stanley JR,Beckwith JB,Weinstein IB,Yuspa SH

更新日期：1982-01-01 00:00:00

abstract：:DNAs from fourteen fibrosarcomas induced by 3-methylcholanthrene (MCA) in BALB/c mice were analyzed for the presence of transforming oncogenes following transfection on NIH3T3 cells. Six transfection-positive DNAs contained an activated ras gene: four c-K-ras and two c-N-ras. These results demonstrate that c-K-ras is ...

journal_title：Carcinogenesis

authors： Borrello MG,Carbone G,Pierotti MA,Molla A,Della Porta G

更新日期：1988-08-01 00:00:00

abstract：:Arsenicals are epidemiologically significant chemicals in relation to induction of urinary bladder cancer in man. In the present study, we investigated the dose-dependent promotion potential of dimethylarsinic acid (DMA), a major metabolite of inorganic arsenicals in mammals, for rat urinary bladder carcinogenesis. In...

journal_title：Carcinogenesis

authors： Wanibuchi H,Yamamoto S,Chen H,Yoshida K,Endo G,Hori T,Fukushima S

更新日期：1996-11-01 00:00:00

abstract：:Liposarcoma (LS) is the most common soft-tissue sarcoma. Dedifferentiated liposarcoma (DDLS) shows more aggressive biological behavior than that of well-differentiated liposarcoma (WDLS), so advanced therapeutic agents based on molecular mechanism are urgently needed. Here we show that tissue inhibitors of metalloprot...

journal_title：Carcinogenesis

authors： Shrestha M,Ando T,Chea C,Sakamoto S,Nishisaka T,Ogawa I,Miyauchi M,Takata T

更新日期：2019-10-16 00:00:00

abstract：:Telomerase contributes to the infinite replicative potential of cancer cells by conferring proliferation and survival through the regulation of growth factors and apoptotic proteins. Although it is generally known that the phytoestrogen, genistein, has telomerase-repressing and anti-proliferative effects on various ca...

journal_title：Carcinogenesis

authors： Chau MN,El Touny LH,Jagadeesh S,Banerjee PP

更新日期：2007-11-01 00:00:00

abstract：:Pardaxin, an antimicrobial peptide secreted by the Red Sea flatfish Pardachirus marmoratus, inhibits proliferation and induces apoptosis of human cancer cell lines. However, the underlying molecular mechanisms are only partially understood at present. In this study, we used proteomic approaches and network reconstruct...

journal_title：Carcinogenesis

authors： Huang TC,Chen JY

更新日期：2013-08-01 00:00:00

abstract：:The role of nitric oxide (NO) in colon cancer remains controversial. Inducible nitric oxide synthase (iNOS) has been reported to be up regulated and down regulated in colorectal cancer in both animal models and patient tissue samples. Cyclooxygenase-2 (COX-2) is important in colorectal carcinogenesis but its relations...

journal_title：Carcinogenesis

authors： Liu Q,Chan ST,Mahendran R

更新日期：2003-04-01 00:00:00

abstract：:The metabolic activation of the heterocyclic food carcinogen 2-amino-3-methylimidazo[4,5-f]quinoline (IQ) by two human cytochrome P450 monoxygenases (P4501A1 and P4501A2) and two human N-acetyltransferases (NAT1 and NAT2) was investigated. Various combinations of these enzymes were functionally expressed in COS-1 cell...

journal_title：Carcinogenesis

authors： Probst MR,Blum M,Fasshauer I,D'Orazio D,Meyer UA,Wild D

更新日期：1992-10-01 00:00:00

abstract：:Two solid-phase extraction methods were developed for the determination of mutagenic heterocyclic aromatic amines in heated meat products. The copper phthalocyanine (CPC) tandem extraction was performed on coupled cartridges of diatomaceous earth and CPC-derivatized Sephasorb HP, followed by further clean-up on Sephas...

journal_title：Carcinogenesis

authors： Gross GA

更新日期：1990-09-01 00:00:00

abstract：:Retroelements constitute a large part of the human genome. These sequences are mostly silenced in normal cells, but genome-wide DNA hypomethylation in cancers might lead to their re-expression. Whether this re-expression really occurs in human cancers is largely unkown. We therefore investigated expression and DNA met...

journal_title：Carcinogenesis

authors： Goering W,Ribarska T,Schulz WA

更新日期：2011-10-01 00:00:00

abstract：:Apolipoprotein E (apoE) plays a major role in the metabolism of bile acids, cholesterol and triglycerides, and has recently been proposed as being involved in the carcinogenic process. Given the potential role of bile acids in colorectal cancer etiology, it is reasonable that colorectal cancer risk might be modified b...

journal_title：Carcinogenesis

authors： Slattery ML,Sweeney C,Murtaugh M,Ma KN,Potter JD,Levin TR,Samowitz W,Wolff R

更新日期：2005-08-01 00:00:00