Isolation of clones displaying enhanced resistance to methylating agents in O6-methylguanine-DNA methyltransferase-proficient CHO cells.

abstract：:Peroxisome proliferator-activated receptor (PPAR) gamma is a ligand-activated nuclear receptor that plays a key role in adipogenesis and adipocyte gene expression, and has recently been linked with possible antineoplastic effects in colonic carcinogenesis. PPARgamma2 and gamma3 are two transcripts arising from the PPA...

journal_title：Carcinogenesis

authors： Koh WP,Yuan JM,Van Den Berg D,Ingles SA,Yu MC

更新日期：2006-09-01 00:00:00

abstract：:Resveratrol is a phytochemical that has been under consideration for use as a prostate cancer chemopreventive agent. However, the efficacy, as well as the mechanisms of action of resveratrol on prostate cancer prevention, remains largely unknown. This study seeks to address these questions and examine the cancer preve...

journal_title：Carcinogenesis

authors： Wang TT,Hudson TS,Wang TC,Remsberg CM,Davies NM,Takahashi Y,Kim YS,Seifried H,Vinyard BT,Perkins SN,Hursting SD

更新日期：2008-10-01 00:00:00

abstract：:The objective was to study the relationship between cyclin D1 gene (CCND1) polymorphism and lung cancer in the Chinese population. Blood samples of 182 cases and 185 controls were collected from a hospital based case-control study. PCR-SSCP was used to examine the G/A polymorphism in exon 4 of CCND1. The results showe...

journal_title：Carcinogenesis

authors： Qiuling S,Yuxin Z,Suhua Z,Cheng X,Shuguang L,Fengsheng H

更新日期：2003-09-01 00:00:00

abstract：:The activity of nuclear transcription factors is often regulated by specific kinase-signaling pathways. We have previously shown that the organochlorine pesticide dichlorodiphenyltrichloroethane (DDT) stimulates activator protein-1 activity through the p38 mitogen-activated protein kinase (MAPK). Here, we show that DD...

journal_title：Carcinogenesis

authors： Bratton MR,Frigo DE,Vigh-Conrad KA,Fan D,Wadsworth S,McLachlan JA,Burow ME

更新日期：2009-01-01 00:00:00

abstract：:4-Hydroxyphenylretinamide (4-HPR) is a synthetic retinoid with minimal toxicity and favorable pharmacokinetics during long-term administration to patients in clinical trials. Since 4-HPR binds poorly to the retinoic acid receptors, the issue of whether 4-HPR exerts its biological actions via classical retinoid recepto...

journal_title：Carcinogenesis

authors： Giandomenico V,Andreola F,Rodriguez de la Concepcion ML,Collins SJ,De Luca LM

更新日期：1999-06-01 00:00:00

abstract：:The Raji human lymphoma line is able to remove O6-methylguanine (O6MeG) lesions introduced by treatment of cells with N-methyl-N'-nitro-N-nitrosoguanidine (MNNG). The reaction has a rapid phase in which approximately 40% of the O6MeG is removed in the first 10 min. The capacity of cells for rapid O6MeG removal is limi...

journal_title：Carcinogenesis

authors： Sklar R,Brady K,Strauss B

更新日期：1981-01-01 00:00:00

abstract：:A 32P-postlabeling assay was employed for detection and quantitation of DNA adducts formed with carcinogenic 1-phenylazo-2-hydroxynaphthalene (Sudan I, Solvent Yellow 14) activated by a peroxidase system. Enrichment of adducts by digestion with nuclease P1 or by extraction into n-butanol prior to 32P-labeling was used...

journal_title：Carcinogenesis

authors： Stiborová M,Frei E,Schmeiser HH,Wiessler M

更新日期：1992-07-01 00:00:00

abstract：:17beta-estradiol (E2), estrone and diethylstilbestrol (DES) had no effect on nuclear and nucleolar RNA synthesis in vitro. However, after reacting with dimethyldioxirane (DMDO), a versatile epoxide-forming oxidant, these estrogens were able to inhibit and in a dose-dependent manner nuclear and nucleolar RNA synthesis ...

journal_title：Carcinogenesis

authors： Yu FL,Bender W

更新日期：1996-09-01 00:00:00

abstract：:Benzo(a]pyrene was metabolized in liver cell lines derived from BC-IV and BD-IV rats which included several chemically-transformed lines (IAR-6-1; IAR-19; IAR-28), one spontaneous transformant (IAR-27) as well as one non-malignant line (IAR-20). Cultures were treated with tritiated benzo[a]pyrene over a 5-day period. ...

journal_title：Carcinogenesis

authors： Selkirk JK,MacLeod MC,Kuroki T,Drevon C,Piccoli C,Montesano R

更新日期：1982-01-01 00:00:00

abstract：:The metabolism of [1,3-14C]benzo[f]quinoline (BfQ) by liver microsomes from control, 3-methylcholanthrene (3-MC)-pretreated and phenobarbital (PB)-pretreated rats has been investigated in order to gain insights into the effect of mixed function oxidase inducers on the types and levels of specific metabolites as formed...

journal_title：Carcinogenesis

authors： Kandaswami C,Kumar S,Dubey SK,Sikka HC

更新日期：1987-12-01 00:00:00

abstract：:The measurement of oxidative damage to cellular DNA is a challenging analytical problem requiring highly sensitive and specific methods. In addition, artefactual DNA oxidation during its extraction and subsequent work-up may give rise to overestimated levels of oxidized DNA bases. In the present study, we have used (1...

journal_title：Carcinogenesis

authors： Ravanat JL,Douki T,Duez P,Gremaud E,Herbert K,Hofer T,Lasserre L,Saint-Pierre C,Favier A,Cadet J

更新日期：2002-11-01 00:00:00

abstract：:Tea polyphenolic constituents induce apoptosis in cancer cells but not in normal cells. To study the mechanism of this selective effect, we used the ornithine decarboxylase (ODC)/Ras double transgenic mouse model that develops spontaneous skin tumors due to over-expression of ODC and a v-Ha-ras transgene. Administrati...

journal_title：Carcinogenesis

authors： Paul B,Hayes CS,Kim A,Athar M,Gilmour SK

更新日期：2005-01-01 00:00:00

abstract：:BALB/c 3T3 A31-1-13 cells are highly susceptible to chemical-induced cell transformation and their gap-junctional intercellular communication (GJIC) is decreased when these cells become confluent. On the other hand, A31-1-1 cells do not show such a change in GJIC and are more resistant to chemical induction of transfo...

journal_title：Carcinogenesis

authors： Katoh F,Yamasaki H

更新日期：1991-10-01 00:00:00

abstract：:Epidemiological investigations suggest that chronic lung inflammation increases lung cancer risk. Pharmacologic and genetic evidence in mouse models indicates that lipid mediators released during pulmonary inflammation enhance lung tumor formation. Cytosolic phospholipase A2 (cPLA2) catalyzes arachidonic acid (AA) rel...

journal_title：Carcinogenesis

authors： Meyer AM,Dwyer-Nield LD,Hurteau GJ,Keith RL,O'Leary E,You M,Bonventre JV,Nemenoff RA,Malkinson AM

更新日期：2004-08-01 00:00:00

abstract：:The reaction of chloroacetaldehyde, a reactive metabolic of the carcinogen vinyl chloride, with DNA produces in addition to the hitherto known adducts, 1,N6-ethenoadenine and 3,N4-ethenocytosine, an ethenoguanine adduct, namely N2,3-ethenoguanine. This adduct is formed in the reaction of chloroacetaldehyde with the fr...

journal_title：Carcinogenesis

authors： Oesch F,Doerjer G

更新日期：1982-01-01 00:00:00

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：:Twist1 is an essential transcription factor required to initiate epithelial-mesenchymal transition (EMT) and promote tumor metastasis. PAQR3 is a newly found tumor suppressor that is frequently downregulated in many types of human cancers. Downregulation of PAQR3 is associated with accelerated metastasis and poor prog...

journal_title：Carcinogenesis

authors： Guo W,You X,Xu D,Zhang Y,Wang Z,Man K,Wang Z,Chen Y

更新日期：2016-04-01 00:00:00

abstract：:In this study, primary murine prostate cancer (PCa) cells were derived using the well-established TRAMP model. These PCa cells were treated with the histone deacetylase inhibitor, valproic acid (VPA), and we demonstrated that VPA treatment has an antimigrative, antiinvasive and antiproliferative effect on PCa cells. U...

journal_title：Carcinogenesis

authors： Witt D,Burfeind P,von Hardenberg S,Opitz L,Salinas-Riester G,Bremmer F,Schweyer S,Thelen P,Neesen J,Kaulfuss S

更新日期：2013-05-01 00:00:00

abstract：:Complementary DNA of marmoset CYP1A2 was isolated by means of screening the cDNA library and reverse-transcriptase polymerase chain reaction. The deduced amino acid sequence of marmoset CYP1A2 consisted of 516 residues and showed 88.2 and 90.0% identities to corresponding forms in human and cynomolgus monkey, respecti...

journal_title：Carcinogenesis

authors： Sakuma T,Igarashi T,Hieda M,Ohgiya S,Isogai M,Ninomiya S,Nagata R,Nemoto N,Kamataki T

更新日期：1997-10-01 00:00:00

abstract：:The genetic factors that mediate the pathogenesis of multiple primary cutaneous basal cell carcinomas (BCC) are largely unclear. Thus, some patients suffer many BCC (>30) and/or rapid accrual (number of tumours/year from first presentation) of further lesions. We have studied, in 827 English Caucasians, the influence ...

journal_title：Carcinogenesis

authors： Lear JT,Heagerty AH,Smith A,Bowers B,Payne CR,Smith CA,Jones PW,Gilford J,Yengi L,Alldersea J,Fryer AA,Strange RC

更新日期：1996-09-01 00:00:00

abstract：:Vinyl chloride (VC) is a carcinogen associated with human and animal cancers. The ultimate carcinogenic form of VC, 2-chloroacetaldehyde (CAA), has been suspected to be mutagenic and we confirmed the mutagenicity of CAA using a modified shuttle vector plasmid. Base sequence analyses of 109 mutant plasmids with mutatio...

journal_title：Carcinogenesis

authors： Matsuda T,Yagi T,Kawanishi M,Matsui S,Takebe H

更新日期：1995-10-01 00:00:00

abstract：:This commentary was written to stimulate thoughts on, and consideration of, enzyme expression data in target organs when investigating possible associations between polymorphisms in carcinogen activation enzymes, lifestyle/dietary factors and cancer risk. The lung and breast are taken as examples. There is overwhelmin...

journal_title：Carcinogenesis

authors： Williams JA

更新日期：2001-02-01 00:00:00

abstract：:Prostate cancer (PCa) is the second cause of cancer deaths in men in the USA. When the cancer recurs, early stages can be controlled with hormone ablation therapy to delay the rate of cancer progression but, over time, the cancer overcomes its hormone dependence, becomes highly aggressive and metastasizes. Clinical tr...

journal_title：Carcinogenesis

authors： Wang L,Li W,Lin M,Garcia M,Mulholland D,Lilly M,Martins-Green M

更新日期：2014-10-01 00:00:00

abstract：:3,4-Epoxy-1-butene (EB) is the major mutagenic metabolite of butadiene (BD), an important industrial chemical classified as a probable human carcinogen. Although the mechanism of carcinogenicity of EB is not known, its reactions with nucleophilic sites of DNA giving pro-mutagenic lesions are likely to constitute the e...

journal_title：Carcinogenesis

authors： Tretyakova N,Lin Y,Sangaiah R,Upton PB,Swenberg JA

更新日期：1997-01-01 00:00:00

abstract：:This study is focused on chemical induction of lung tumors in xeroderma pigmentosum group A gene (XPA)-deficient mice to clarify the role of nucleotide excision repair (NER) in internal organs. Six-week-old female XPA-/-, XPA(+/-) and XPA(+/+) mice were instilled intratracheally with benzo[a] pyrene (B[a]P). A total o...

journal_title：Carcinogenesis

authors： Ide F,Iida N,Nakatsuru Y,Oda H,Tanaka K,Ishikawa T

更新日期：2000-06-01 00:00:00

abstract：:The Bowman-Birk protease inhibitor (BBI) is a legume-derived inhibitor of chymotrypsin and trypsin that has been shown to suppress cellular transformation and tumorigenesis. In the present investigation the effects of various BBI administration schedules were evaluated for suppression of 3-methylcholanthrene (3-MCA)-i...

journal_title：Carcinogenesis

authors： St Clair WH

更新日期：1991-05-01 00:00:00

abstract：:Xanthorrhizol is an active component isolated from Curcuma xanthorrhiza Roxb. (Zingiberaceae) that is traditionally used in Indonesia for medicinal purposes. In the present study, we found that the topical application of xanthorrhizol before 12-O-tetradecanoylphorbol-13-acetate (TPA) treatment significantly inhibits T...

journal_title：Carcinogenesis

authors： Chung WY,Park JH,Kim MJ,Kim HO,Hwang JK,Lee SK,Park KK

更新日期：2007-06-01 00:00:00

abstract：:Not all carcinogens are mutagens, and many mutagens are not carcinogens. Among related chemicals, small changes of structure can markedly influence carcinogenic potency. Many tumours are genetically unstable, but some, especially 'benign' types, rarely exhibit 'progression' or show other evidence of genetic instabilit...

journal_title：Carcinogenesis

authors： Bignold LP

更新日期：2004-03-01 00:00:00

abstract：:In recent years, considerable emphasis has been placed on identifying new cancer chemopreventive agents which could be useful for human populations. Silymarin, an anti-oxidant flavonoid isolated from artichoke, has been shown to possess significant activity against hepatotoxicity and other pharmacological and physiolo...

journal_title：Carcinogenesis

authors： Agarwal R,Katiyar SK,Lundgren DW,Mukhtar H

更新日期：1994-06-01 00:00:00

abstract：:This report shows that generation of hydrogen peroxide (H2O2) by human polymorphonuclear leukocytes (PMNs) activated with tumor promoters of varying potency as first and second stage promoters correlates well with activities of these promoters in vivo. Those tested were 12-O-tetradecanoylphorbol-13-acetate (TPA), a co...

journal_title：Carcinogenesis

authors： Frenkel K,Chrzan K

更新日期：1987-03-01 00:00:00