Regulation of gap-junctional intercellular communication in transformation-sensitive and transformation-resistant BALB/c 3T3 cell variants.

abstract：:Heterocyclic aromatic amines (HAAs), formed during the cooking of foods, are known to induce tumours in rodent bioassays and may thus contribute to human cancer risk. We tested six HAAs in a morphological transformation assay and in three in vitro genotoxicity assays. The morphological transforming abilities of HAAs w...

journal_title：Carcinogenesis

authors： Pfau W,Martin FL,Cole KJ,Venitt S,Phillips DH,Grover PL,Marquardt H

更新日期：1999-04-01 00:00:00

abstract：:Diacylglycerols (DAG) are lipid second messengers which are generated during phospholipase-catalyzed hydrolysis of phospholipids. The model DAG, sn-1,2-didecanoylglycerol (DIC10), is an effective topical tumor promoter in 7,12-dimethylbenz[a]anthracene (DMBA)-initiated mouse skin. We now report that 11/12 of DMBA-init...

journal_title：Carcinogenesis

authors： Mills KJ,Reynolds SH,Smart RC

更新日期：1993-12-01 00:00:00

abstract：:Cancer-associated fibroblasts (CAFs) have been described to play critical roles in initiation, progression and metastasis of various cancers. However, the involvement of CAFs in oral cancer (OC) has not been well addressed. In this study, we demonstrate that CAFs, when cocultured with OC cells (OCCs), produce high lev...

journal_title：Carcinogenesis

authors： Li X,Xu Q,Wu Y,Li J,Tang D,Han L,Fan Q

更新日期：2014-06-01 00:00:00

abstract：:3-Hydroxy-3-methylglutaryl coenzyme A (HMG-CoA) reductase inhibitors, pravastatin (Pr) and simvastatin (Si), suppressed 1,2-dimethylhydrazine (DMH)-induced colon cancer development in female ICR mice. All mice received an i.p. injection of 10 mg DMH/kg body wt once weekly for 15 weeks. Pr was administered at 0.01, 0.0...

journal_title：Carcinogenesis

authors： Narisawa T,Fukaura Y,Terada K,Umezawa A,Tanida N,Yazawa K,Ishikawa C

更新日期：1994-09-01 00:00:00

abstract：:Overall rates of tissue protein degradation in vivo during chemical hepatocarcinogenesis were estimated by a double-isotope method as well as from the accumulation of peptide intermediates in protein degradation induced by bestatin. Several parameters estimating rates of cell proliferation and cell loss have been meas...

journal_title：Carcinogenesis

authors： Canuto RA,Tessitore L,Muzio G,Autelli R,Baccino FM

更新日期：1993-12-01 00:00:00

abstract：:Lung tumors were induced in A/J mice by the tobacco-specific nitrosamine 4-(methylnitrosamino)-1-(3-pyridyl)-1-butanone (NNK) and the related compounds acetoxymethylmethylnitrosamine (AMMN) and 4-acetoxymethylnitrosamino)-1-(3-pyridyl)-1-butanone (NNKOAc). NNK both methylates and pyridyloxobutylates DNA while AMMN and...

journal_title：Carcinogenesis

authors： Ronai ZA,Gradia S,Peterson LA,Hecht SS

更新日期：1993-11-01 00:00:00

abstract：:We have previously demonstrated that the active dihydrofolate reductase (DHFR) gene is efficiently repaired in Chinese hamster ovary (CHO) cells which remove only a small fraction of u.v.-induced pyrimidine dimers from the overall genome. Preferential DNA repair of essential genes may explain why the u.v. resistance o...

journal_title：Carcinogenesis

authors： Bohr VA,Hanawalt PC

更新日期：1987-09-01 00:00:00

abstract：:A three-dimensional molecular template has been generated for substrates of human debrisoquine 4-hydroxylase cytochrome P450 (CYP2D6). This template defines the stereochemical requirements for CYP2D6 substrates in terms of the volume occupied and positions of key atoms. The modelling was based on the X-ray crystallogr...

journal_title：Carcinogenesis

authors： Islam SA,Wolf CR,Lennard MS,Sternberg MJ

更新日期：1991-12-01 00:00:00

abstract：:The liver-derived human cell line, Hep G2, has high benzo[a]pyrene-metabolizing activity and converts benzo[a]pyrene to intermediates that are mutagenic and that bind to DNA. This cell line will be useful for studying metabolic activation of polycyclic aromatic hydrocarbons and other xenobiotics by human tissue and as...

journal_title：Carcinogenesis

authors： Diamond L,Kruszewski F,Aden DP,Knowles BB,Baird WM

更新日期：1980-01-01 00:00:00

abstract：:Arsenic is an established human carcinogen. Deficiencies in available animal models have inhibited a detailed analysis of the mechanism of arsenic induced cancer. This study sought to determine the role of a methyl-deficient diet in combination with sodium arsenite on the genomic methylation status and Ha-ras methylat...

journal_title：Carcinogenesis

authors： Okoji RS,Yu RC,Maronpot RR,Froines JR

更新日期：2002-05-01 00:00:00

abstract：:The coordinate regulation of DNA synthesis and suppression of apoptosis was investigated in a rat hepatocyte cell culture system which supports high level induction of DNA synthesis by the peroxisome proliferator, methylclofenapate (MCP) (Plant, N.J. et al., 1998, Carcinogenesis, 19, 925-931). The peroxisome prolifera...

journal_title：Carcinogenesis

authors： Plant NJ,Horley NJ,Dickins M,Hasmall S,Elcombe CR,Bell DR

更新日期：1998-09-01 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：:Sweet potato (Ipomoea batatas) leaves or greens, extensively consumed as a vegetable in Africa and Asia, are an excellent source of dietary polyphenols such as anthocyanins and phenolic acids. Here, we show that sweet potato greens extract (SPGE) has the maximum polyphenol content compared with several commercial vege...

journal_title：Carcinogenesis

authors： Karna P,Gundala SR,Gupta MV,Shamsi SA,Pace RD,Yates C,Narayan S,Aneja R

更新日期：2011-12-01 00:00:00

abstract：:Male Leeds strain rats were given a diet containing either 0.06% 3'-methyl-4-dimethylaminoazobenzene (3'-MeDAB) or 0.05% 2-acetylaminofluorene (2-AAF), alone or together with 0.0067% 3-methylcholanthrene (MeCh). MeCh both reduced the incidence of hepatic neoplasms induced by 3'-MeDAB and delayed their development. Wit...

journal_title：Carcinogenesis

authors： Flaks A,Flaks B

更新日期：1982-01-01 00:00:00

abstract：:Dehydroepiandrosterone (DHEA), a major adrenal secretory product in men and women, is a potent inhibitor of mammalian glucose-6-phosphate dehydrogenase (G6PDH). Long-term treatment with this steroid has previously been found to suppress spontaneous breast cancer development in C3H mice. DHEA is now shown to inhibit Ep...

journal_title：Carcinogenesis

authors： Henderson E,Schwartz A,Pashko L,Abou-Gharbia M,Swern D

更新日期：1981-01-01 00:00:00

abstract：:2-amino-1-methyl-6-phenylimidazo[4,5-b]pyridine (PhIP) is a mutagenic and carcinogenic heterocyclic amine formed during ordinary cooking. PhIP is metabolically activated to the ultimate mutagenic metabolite by CYP P450-mediated N-hydroxylation followed by phase II esterification. Incubation of N-hydroxy-PhIP (N-OH-PhI...

journal_title：Carcinogenesis

authors： Frandsen H,Alexander J

更新日期：2000-06-01 00:00:00

abstract：:Colonic epithelial cell migration is required for normal differentiated cell function. This migratory phenotype is dependent upon wild-type adenomatous polyposis coli (Apc) expression. Non-tumorigenic murine colon epithelial cell lines with distinct Apc genotypes, i.e. young adult mouse colon (YAMC; Apc(+/+)) and immo...

journal_title：Carcinogenesis

authors： Fenton JI,Wolff MS,Orth MW,Hord NG

更新日期：2002-06-01 00:00:00

abstract：:Intake of dietary factors that serve as methyl group donors may influence promoter hypermethylation in colorectal carcinogenesis. We investigated whether dietary folate, vitamin B2 and vitamin B6, methionine and alcohol were associated with mutL homologue 1 (MLH1) hypermethylation and the related molecular phenotypes ...

journal_title：Carcinogenesis

authors： de Vogel S,Bongaerts BW,Wouters KA,Kester AD,Schouten LJ,de Goeij AF,de Bruïne AP,Goldbohm RA,van den Brandt PA,van Engeland M,Weijenberg MP

更新日期：2008-09-01 00:00:00

abstract：:N-nitrosopiperidine (NPIP) is a potent esophageal carcinogen in rats whereas structurally similar N-nitrosopyrrolidine (NPYR) induces liver, but not esophageal tumors. NPIP is a possible causative agent for human esophageal cancer. Our goal is to explain mechanistically these differing carcinogenic activities in the e...

journal_title：Carcinogenesis

authors： Wong HL,Murphy SE,Wang M,Hecht SS

更新日期：2003-02-01 00:00:00

abstract：:Four monoclonal antibodies, PhIP-1, -2, -3 and -4, have been produced that bind to PhIP (2-amino-1-methyl-6-phenyl-imidazo[4,5-b]pyridine), a mutagenic aromatic amine produced in meat by cooking. The immunogen was an analog of PhIP conjugated to a carrier protein through the 2-amino group of PhIP, leaving the pyridine...

journal_title：Carcinogenesis

authors： Vanderlaan M,Watkins BE,Hwang M,Knize MG,Felton JS

更新日期：1989-12-01 00:00:00

abstract：:Recently, TWIST, a basic helix-loop-helix transcription factor, is suggested to be an oncogene because of its over-expression in many types of human cancer and its positive role in promoting cell survival. The aim of this study was to investigate the role of TWIST on the growth of human epithelial cells. Using two imm...

journal_title：Carcinogenesis

authors： Kwok WK,Ling MT,Yuen HF,Wong YC,Wang X

更新日期：2007-12-01 00:00:00

abstract：:The oncoprotein ErbB3 is overexpressed in several human cancers, for example in pancreatic adenocarcinoma and in ovarian cancers, and ErbB3-containing heterodimers have been demonstrated to be potent signaling units in carcinogenesis. This especially applies to ErbB2-ErbB3 and epidermal growth factor receptor (EGFR)-E...

journal_title：Carcinogenesis

authors： Sak MM,Breen K,Rønning SB,Pedersen NM,Bertelsen V,Stang E,Madshus IH

更新日期：2012-05-01 00:00:00

abstract：:Benzo[a]pyrene diol epoxide (BPDE)-DNA adducts are involved in the induction of p53 mutations and probably in the causation of human lung cancer associated with cigarette smoking. The ratio between CYP1A1 and GST enzyme activities is a critical determinant of the target dose of carcinogenic BPDE and other DNA-reactive...

journal_title：Carcinogenesis

authors： Alexandrov K,Cascorbi I,Rojas M,Bouvier G,Kriek E,Bartsch H

更新日期：2002-12-01 00:00:00

abstract：:Pancreatic cancer has remained refractory to treatment. In large part, this results from the lack of an animal model that mimics pancreatic cancer in man. We describe a novel experimental model of pancreatic cancer that shares the genetic background, histologic features and natural history of human mixed acinar-ductal...

journal_title：Carcinogenesis

authors： Doiron B,DeFronzo RA

更新日期：2018-02-09 00:00:00

abstract：:In the present study the role of two families of cytochrome P-450 proteins and the contribution of the cytosolic fraction in the activation of N-nitrosopiperidine to mutagens in the Ames test were investigated. The bioactivation of this nitrosamine was preferentially catalysed by the phenobarbitone-induced cytochromes...

journal_title：Carcinogenesis

authors： Ayrton AD,Smith JN,Ioannides C

更新日期：1987-11-01 00:00:00

abstract：:DNA double-strand break (DSB) repair is an important mechanism underlying chemotherapy resistance in human cancers. Dicer participates in DSB repair by facilitating homologous recombination. However, whether Dicer is involved in non-homologous end joining (NHEJ) remains unknown. Here, we addressed whether Dicer regula...

journal_title：Carcinogenesis

authors： Chen X,Li WF,Wu X,Zhang HC,Chen L,Zhang PY,Liu LY,Ma D,Chen T,Zhou L,Xu Y,Zhou MT,Tang KF

更新日期：2017-09-01 00:00:00

abstract：:Functional inactivation of BRCA1 is an important mechanism involved in breast cancer pathogenesis. Mutation is often responsible for BRCA1 inactivation in familial breast cancer, but is not responsible for the decreased levels of BRCA1 seen in a subset of sporadic breast cancer patients. To determine if aberrant cytos...

journal_title：Carcinogenesis

authors： Rice JC,Ozcelik H,Maxeiner P,Andrulis I,Futscher BW

更新日期：2000-09-01 00:00:00

abstract：:In the era of precision oncology, bladder cancer (BlCa) is characterized by generic patient management and lack of personalized prognosis and surveillance. Herein, we have studied the clinical significance of urothelial cancer associated 1 (UCA1) lncRNA in improving patients' risk stratification and prognosis. A scree...

journal_title：Carcinogenesis

authors： Avgeris M,Tsilimantou A,Levis PK,Rampias T,Papadimitriou MA,Panoutsopoulou K,Stravodimos K,Scorilas A

更新日期：2019-08-22 00:00:00

abstract：:Celastrol is an anti-inflammatory natural triterpenoid, isolated from the herb Tripterygium wilfordii or thunder god vine. Here, we define mechanisms mediating anti-inflammatory activity of celastrol and demonstrate efficacy of a dietary celastrol supplement for chemoprevention of inflammation-driven carcinogenesis in...

journal_title：Carcinogenesis

authors： Barker EC,Kim BG,Yoon JH,Tochtrop GP,Letterio JJ,Choi SH

更新日期：2018-01-12 00:00:00

abstract：:To examine the miscoding properties of modified guanine residues bearing increasingly bulky O6-substituents, Rat4 cells, grown in the presence of O6-benzylguanine to deplete the DNA repair protein O6-alkylguanine-DNA alkyltransferase, were transfected with plasmids carrying H-ras genes in which O6-methyl, O6-ethyl- an...

journal_title：Carcinogenesis

authors： Bishop RE,Pauly GT,Moschel RC

更新日期：1996-04-01 00:00:00