DNA polymerase, RNA polymerase and exonuclease activities on a DNA sequence modified by benzo[a]pyrene diolepoxide.

abstract：:Aromatic DNA adducts in total white blood cells, cytochrome P450 (CYP) class 1A1 and glutathione transferase (GST1) class mu genotypes and micronuclei in T- and B-lymphocytes were studied in 69 full-time chimney sweeps and 35 controls, all male subjects. The sweeps had a higher (22%) but statistically non-significant ...

journal_title：Carcinogenesis

authors： Ichiba M,Hagmar L,Rannug A,Högstedt B,Alexandrie AK,Carstensen U,Hemminki K

更新日期：1994-07-01 00:00:00

abstract：:N-Nitrosodimethylamine (NDMA) is a potent mutagen and animal carcinogen to which many people are exposed through the consumption of contaminated food and the use of tobacco products. Although the mutational specificity of NDMA has been studied in bacteria, little is known about the specific types of mutations induced ...

journal_title：Carcinogenesis

authors： Dobo KL,Eastmond DA,Grosovsky AJ

更新日期：1998-05-01 00:00:00

abstract：:DNA mismatch repair (MMR) deficiency results in a strong mutator phenotype and high-frequency microsatellite instability (MSI-H), which are the hallmarks of tumors arising within Lynch syndrome. MSI-H is characterized by length alterations within simple repeated sequences, microsatellites. Lynch syndrome is primarily ...

journal_title：Carcinogenesis

authors： Imai K,Yamamoto H

更新日期：2008-04-01 00:00:00

abstract：:This study was conducted to investigate the modifying effect of glutathione S-transferase (GST) M1 and T1 polymorphisms on aflatoxin-induced hepatocarcinogenesis among chronic hepatitis B virus surface antigen (HBsAg) carriers. A total of 79 HBsAg-positive cases of hepatocellular carcinoma (HCC) diagnosed between 1991...

journal_title：Carcinogenesis

authors： Sun CA,Wang LY,Chen CJ,Lu SN,You SL,Wang LW,Wang Q,Wu DM,Santella RM

更新日期：2001-08-01 00:00:00

abstract：:Constituents in food and fluids, tobacco chemicals and many drugs are candidates for oral absorption and oxidative metabolism. On this basis, the expression of cytochrome P450 isozymes (CYPs) and the conversion of CYP substrates were analysed in reference to buccal mucosa. A RT-PCR based analysis of human buccal tissu...

journal_title：Carcinogenesis

authors： Vondracek M,Xi Z,Larsson P,Baker V,Mace K,Pfeifer A,Tjälve H,Donato MT,Gomez-Lechon MJ,Grafström RC

更新日期：2001-03-01 00:00:00

abstract：:A reduction in the ratio of tetraploid to diploid liver nuclei has been investigated as an early indicator of hepatocarcinogenesis in the rat using the liver carcinogen 3'-methyl-4-dimethylaminoazobenzene (3'M). In a dose ranging study 3'M was administered by gavage to rats at 5, 12.5 and 25 mg/kg for up to 10 weeks a...

journal_title：Carcinogenesis

authors： Styles J,Elliott BM,Lefevre PA,Robinson M,Pritchard N,Hart D,Ashby J

更新日期：1985-01-01 00:00:00

abstract：:The mutagen sensitivity assay is an in vitro measure of DNA repair capacity used to evaluate intrinsic susceptibility for cancer. The high heritability of mutagen sensitivity to different mutagens validates the use of this phenotype to predict cancer susceptibility. However, genetic determinants of mutagen sensitivity...

journal_title：Carcinogenesis

authors： Leng S,Stidley CA,Bernauer AM,Picchi MA,Sheng X,Frasco MA,Van Den Berg D,Gilliland FD,Crowell RE,Belinsky SA

更新日期：2008-07-01 00:00:00

abstract：:Methylation of the non-carcinogen 15,16-dihydrocyclopenta[a]phenanthren-17-one (CPP-17-one) at the bay region to form 11-CH3-CPP-17-one confers carcinogenic potential. In the present study we have investigated the in vitro metabolism and mutagenicity of the methylated compound by hepatic microsomal preparations from r...

journal_title：Carcinogenesis

authors： Boyd GW,Young RJ,Harvey RG,Coombs MM,Ioannides C

更新日期：1993-09-01 00:00:00

abstract：:Four inbred strains of mice (C3H/HeJ, C57BL/6J, AKR/J, and DBA/2J) were injected s.c. with 150 micrograms of dibenz[a,h]anthracene and followed for 9 months. Strains C3H/HeJ and C57BL/6J were most susceptible to dibenz[a,h]anthracene-induced carcinogenesis with 80% and 53% incidence of tumors, respectively. Strains AK...

journal_title：Carcinogenesis

authors： Lubet RA,Connolly GM,Nebert DW,Kouri RE

更新日期：1983-01-01 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：:For a group of nine hydrocarbon and halogenated hydrocarbon epoxides, there is shown to be a good correlation between their abilities to inhibit epoxide hydrase and the quantity Vmin /Es, where Vmin is the most negative value of the molecule's electrostatic potential in the neighborhood of the epoxide oxygen and Es is...

journal_title：Carcinogenesis

authors： Politzer P,Laurence PR

更新日期：1984-06-01 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：:Ovarian cancer is developed from a single layer of thin epithelial cells covering the surface of ovary, named human ovarian surface epithelial cells. Like all primary human cells, human ovarian surface epithelial cells have a finite life span and will go into senescence and eventually die when cultured in vitro. Immor...

journal_title：Carcinogenesis

authors： Yang G,Rosen DG,Mercado-Uribe I,Colacino JA,Mills GB,Bast RC Jr,Zhou C,Liu J

更新日期：2007-01-01 00:00:00

abstract：:Skin is a major target of carcinogenic trivalent arsenic (arsenite, As3+). It has been thought that cell proliferation is one of the central events involved in the carcinogenic effect of arsenite. Cyclin D1, a nuclear protein playing a pivotal role in cell proliferation and cell cycle transition from G1 to S phases, h...

journal_title：Carcinogenesis

authors： Ouyang W,Li J,Ma Q,Huang C

更新日期：2006-04-01 00:00:00

abstract：:Several studies have shown that hexavalent chromium [Cr(VI)] induces apoptosis in a variety of in vitro test systems. We instilled intra-tracheally either saline or sodium dichromate (0.25 mg/kg body weight), for three consecutive days, to Sprague-Dawley rats. TUNEL analyses showed a marked increase of the apoptotic i...

journal_title：Carcinogenesis

authors： D'Agostini F,Izzotti A,Bennicelli C,Camoirano A,Tampa E,De Flora S

更新日期：2002-04-01 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：:SH3RF (SH3-domain-containing RING finger protein) family members, SH3RF1-3, are multidomain scaffold proteins involved in promoting cell survival and apoptosis. In this report, we show that SH3RF2 is an oncogene product that is overexpressed in human cancers and regulates p21-activated kinase 4 (PAK4) protein stabilit...

journal_title：Carcinogenesis

authors： Kim TW,Kang YK,Park ZY,Kim YH,Hong SW,Oh SJ,Sohn HA,Yang SJ,Jang YJ,Lee DC,Kim SY,Yoo HS,Kim E,Yeom YI,Park KC

更新日期：2014-03-01 00:00:00

abstract：:The nucleotide excision repair (NER) pathway is central in response to damage induced by environmental carcinogens. Efficiency of this pathway, probably genetically determined, may modulate individual risk of developing squamous cell carcinoma of the head and neck (SCCHN) as well as second primary malignancy (SPM) aft...

journal_title：Carcinogenesis

authors： Zafereo ME,Sturgis EM,Liu Z,Wang LE,Wei Q,Li G

更新日期：2009-06-01 00:00:00

abstract：:Using conventional alkaline sucrose sedimentation analysis, we have compared the initial yield and subsequent enzymatic repair of DNA damage induced in cultured human [normal (GM38 and GM43) and xeroderma pigmentosum (XP12BE)] fibroblasts by the monofunctional alkylating agent methylmethanesulfonate (MMS). Exposure of...

journal_title：Carcinogenesis

authors： Mirzayans R,Liuzzi M,Paterson MC

更新日期：1988-12-01 00:00:00

abstract：:In the present study the modulating effects of dietary fish oil (MaxEPA) on unsaturated fat-promoted pancreatic carcinogenesis in azaserine-treated rats were investigated. Three groups of 20 rats (each group comprised five saline-treated and 15 azaserine-treated animals) were fed an AIN76-based purified diet containin...

journal_title：Carcinogenesis

authors： Appel MJ,Woutersen RA

更新日期：1994-10-01 00:00:00

abstract：:Resveratrol is a naturally occurring trihydroxyl-diphenylethylene compound that has been shown experimentally to have beneficial effects in the treatment of cancer and cardiovascular disease. Resveratrol induces programmed cell death (apoptosis) in these cells and activates important signal transducing proteins includ...

journal_title：Carcinogenesis

authors： Lin C,Crawford DR,Lin S,Hwang J,Sebuyira A,Meng R,Westfall JE,Tang HY,Lin S,Yu PY,Davis PJ,Lin HY

更新日期：2011-01-01 00:00:00

abstract：:Recent evidence demonstrates the existence of diversified microbiota in the lung. However, the effect of lung carcinogenesis on the flora in lung microenvironment has yet not been well investigated. In this study, we surveyed the microbial composition and diversity in lung tumor and paired adjacent normal tissues obta...

journal_title：Carcinogenesis

authors： Mao Q,Ma W,Wang Z,Liang Y,Zhang T,Yang Y,Xia W,Jiang F,Hu J,Xu L

更新日期：2020-08-12 00:00:00

abstract：:Wildtype 10T1/2 cells and 42 clonally derived morphologically transformed 10T1/2 cell lines were evaluated for expression of p53 mRNA and protein. Wildtype 10T1/2 cells expressed detectable levels of p53 mRNA and multiple immunologically distinct forms of the p53 protein, including both PAb240- and PAb246-reactive con...

journal_title：Carcinogenesis

authors： Coleman WB,Grisham JW,Smith GJ

更新日期：1994-02-01 00:00:00

abstract：:Many chemoradiation therapies cause DNA damage through oxidative stress. An important cellular mechanism that protects cells against oxidative stress involves DNA repair. One of the primary DNA repair mechanisms for oxidative DNA damage is base excision repair (BER). BER involves the tightly coordinated function of fo...

journal_title：Carcinogenesis

authors： Zhang H,Mizumachi T,Carcel-Trullols J,Li L,Naito A,Spencer HJ,Spring PM,Smoller BR,Watson AJ,Margison GP,Higuchi M,Fan CY

更新日期：2007-08-01 00:00:00

abstract：:In vitro exposures of isolated DNA to one of the two carcinogenic and mutagenic chemicals, diethylsulfate or dimethylsulfate, induces several kinds of physicochemical and morphological alterations. These changes are detectable by a variety of independent techniques. A fraction of DNA treated briefly with either of the...

journal_title：Carcinogenesis

authors： Kubinski H,Kubinski ZO,Fiandt M,Konopa G

更新日期：1981-01-01 00:00:00

abstract：:To determine the contribution of susceptibility loci in explaining the genetic basis of acute lymphoblastic leukemia (ALL), we genotyped 29 high-potential candidate genes with 672 tagged single-nucleotide polymorphisms (SNPs) in a sample (163 cases and 251 healthy controls) of Caucasian children. Fifty SNPs in 15 gene...

journal_title：Carcinogenesis

authors： Beuten J,Gelfond JA,Piwkham D,Pollock BH,Winick NJ,Collier AB 3rd,Tomlinson GE

更新日期：2011-09-01 00:00:00

abstract：:Okadaic acid is both a potent inhibitor of protein serine/threonine phosphatases and a tumor promoter in the mouse skin model. We have previously shown that at non-toxic nanomolar concentrations okadaic acid reversibly inhibits induction (promotion) by PDGF of transformed cells by the 'complete' and 'two-stage' protoc...

journal_title：Carcinogenesis

authors： Dean NM,Mordan LJ,Tse K,Mooberry SL,Boynton AL

更新日期：1991-04-01 00:00:00

abstract：:Tamoxifen is a non-steroidal anti-estrogen used for the treatment of breast cancer and, more recently, as a chemopreventive agent in healthy women at high risk of developing breast cancer. On the other hand, tamoxifen is a potent hepatocarcinogen in rats, with both tumor-initiating and tumor-promoting properties. Ther...

journal_title：Carcinogenesis

authors： Tryndyak VP,Muskhelishvili L,Kovalchuk O,Rodriguez-Juarez R,Montgomery B,Churchwell MI,Ross SA,Beland FA,Pogribny IP

更新日期：2006-08-01 00:00:00

abstract：:Despite significant research, our understanding of the molecular mechanisms of Human Papilloma Virus (HPV) induced cancers remains incomplete. Majority of invasive cervical cancers are caused by high-risk HPV 16 and 18. Two potent HPV oncoproteins, E6 and E7, promote human malignancies by disrupting the activities of ...

journal_title：Carcinogenesis

authors： Chand V,John R,Jaiswal N,Johar SS,Nag A

更新日期：2014-08-01 00:00:00

abstract：:An earlier study indicated that ozone (O3), a major pollutant in our atmosphere, acts as a carcinogen as well as a synergistic co-carcinogen with radiation in cultured hamster embryo cells and in mouse C3H10T1/2 cells. In this investigation we further characterize the oncogenic action of ozone, alone or in combination...

journal_title：Carcinogenesis

authors： Borek C,Ong A,Zaider M

更新日期：1989-08-01 00:00:00