O6-ethylguanine and O6-benzylguanine incorporated site-specifically in codon 12 of the rat H-ras gene induce semi-targeted as well as targeted mutations in Rat4 cells.

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：:Recent studies have demonstrated that K-ras mutations in lung epithelial cells elicit inflammation that promotes carcinogenesis in mice (intrinsic inflammation). The finding that patients with chronic obstructive pulmonary disease (COPD), an inflammatory disease of the lung, have an increased risk of lung cancer after...

journal_title：Carcinogenesis

authors： Moghaddam SJ,Barta P,Mirabolfathinejad SG,Ammar-Aouchiche Z,Garza NT,Vo TT,Newman RA,Aggarwal BB,Evans CM,Tuvim MJ,Lotan R,Dickey BF

更新日期：2009-11-01 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 tested the hypothesis that the inhibition by hydroxyurea of repair patch ligation and chromatin rearrangement during u.v.-induced DNA excision repair results from a reduction in cellular deoxyribonucleotide concentrations and not from a direct effect of hydroxyurea on the repair process. Using permeable human ...

journal_title：Carcinogenesis

authors： Hunting DJ,Dresler SL

更新日期：1985-10-01 00:00:00

abstract：:The possibility that alpha-tocopherol (vitamin E) inhibits the formation of nitrosomorpholine (NMOR) in vivo was investigated in mice orally pretreated with alpha-tocopherol (2.5-100 mg/kg body wt) once daily for 6 days. Twenty-four hours later, the animals were injected i.p. with 2 mg of morpholine (MOR) per animal f...

journal_title：Carcinogenesis

authors： Norkus EP,Kuenzig WA,Chau J,Mergens WJ,Conney AH

更新日期：1986-03-01 00:00:00

abstract：:Hepatic microsomes of female F344 rats were capable of N,O-acyltransfer of N-hydroxy-N-acetyl-2-aminofluorene (N-OH-AAF) and N-hydroxy-N-formyl-2-aminofluorene (N-OH-FAF), N-deacetylation of N-OH-AAF and N-acetyl-2-aminofluorene (2-AAF), and O-deacetylation of 4-nitrophenyl acetate (NPA). The activity for N,O-acyltran...

journal_title：Carcinogenesis

authors： Wang CY,Zukowski K,Lee MS,Sone T

更新日期：1992-11-01 00:00:00

abstract：:Administration of methylglyoxal at doses of 300-600 mg/kg body weight by gastric tube to male F344 rats induced 100-fold increase in ornithine decarboxylase activity (formation of 682 pmol CO2/30 min/mg protein) within 7 h, 26-fold increase in DNA synthesis (incorporation of 17 800 d.p.m. of [3H]thymidine/microgram DN...

journal_title：Carcinogenesis

authors： Furihata C,Sato Y,Matsushima T,Tatematsu M

更新日期：1985-01-01 00:00:00

abstract：:The rate of formation of N-hydroxy-N-methyl-4-aminoazobenzene (N-OH-MAB) derivatives from N,N-dimethyl-4-aminoazobenzene (DAB) derivatives and from N-methyl-4-aminoazobenzene (MAB) derivatives was measured by the e.s.r. spectroscopy, and the rate of N-demethylation of DAB derivatives was measured by h.p.l.c. The rate ...

journal_title：Carcinogenesis

authors： Kimura T,Kodama M,Nagata C

更新日期：1982-01-01 00:00:00

abstract：:We demonstrated previously that growth factor receptor-bound protein 2 (Grb2) associates with the transforming growth factor-beta (TGF-beta) type II receptor [TbetaR-II] upon its phosphorylation on Tyr284 by Src. Although this phosphotransferase reaction is critical in mediating TGF-beta stimulation of epithelial-mese...

journal_title：Carcinogenesis

authors： Galliher-Beckley AJ,Schiemann WP

更新日期：2008-02-01 00:00:00

abstract：:To study the roles of DNA polymerases alpha and beta during replication and repair of damaged DNA, use was made of the fact that during chronic treatment with carcinogens, replication and repair do not necessarily follow the same time sequence. Early cell damage and restorative hyperplasia cause a transient wave of DN...

journal_title：Carcinogenesis

authors： Craddock VM

更新日期：1981-01-01 00:00:00

abstract：:Genome-wide DNA hypomethylation was one of the first epigenetic alterations described in cancer cells. However, the cause of this hypomethylation is still poorly understood. We have previously developed a line of primary mesenchymal stem cells (MSC, the putative origin of various types of sarcoma) in which five oncoge...

journal_title：Carcinogenesis

authors： Wild L,Funes JM,Boshoff C,Flanagan JM

更新日期：2010-10-01 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：:The regulation of growth hormone 1 (GH1) and insulin-like-growth factor-1 (IGF-1) release is under the influence of three pituitary hormones [growth hormone releasing hormone (GHRH), ghrelin (GHRL) and somatostatin (SST)], which act in an autocrine/paracrine fashion in the breast. By binding to their respective recept...

journal_title：Carcinogenesis

authors： Wagner K,Hemminki K,Grzybowska E,Klaes R,Burwinkel B,Bugert P,Schmutzler RK,Wappenschmidt B,Butkiewicz D,Pamula J,Pekala W,Försti A

更新日期：2006-09-01 00:00:00

abstract：:Apigenin, a flavonoid abundant in various vegetables and fruits, including parsley and onions, has been reported to possess anticarcinogenic effects. However, the direct molecular target of apigenin and its chemopreventive effect on ultraviolet (UV)-induced skin inflammation are not understood fully. Herein, we examin...

journal_title：Carcinogenesis

authors： Byun S,Park J,Lee E,Lim S,Yu JG,Lee SJ,Chen H,Dong Z,Lee KW,Lee HJ

更新日期：2013-02-01 00:00:00

abstract：:Dibenzo[a,l]pyrene (DB[a,l]P) is an extremely potent carcinogen that may be present in environmental samples. Dose-response studies were conducted at low doses in mouse skin by initiation-promotion and repeated application to compare its activity to that of 7,12-dimethylbenz[a]anthracene (DMBA), benzo[a]pyrene (B[a]P)...

journal_title：Carcinogenesis

authors： Higginbotham S,RamaKrishna NV,Johansson SL,Rogan EG,Cavalieri EL

更新日期：1993-05-01 00:00:00

abstract：:Androgens and estrogens may play a role in gastric cancer etiology. To investigate the association of gastric cancer with single-nucleotide polymorphisms (SNPs) in six genes (COMT, CYP1B1, CYP17A1, CYP19A1, HSD17B1 and SHBG) involved in estrogen and androgen synthesis and metabolism, 58 haplotype-tagging SNPs were gen...

journal_title：Carcinogenesis

authors： Freedman ND,Ahn J,Hou L,Lissowska J,Zatonski W,Yeager M,Chanock SJ,Chow WH,Abnet CC

更新日期：2009-01-01 00:00:00

abstract：:Lung cancer is the leading cause of cancer-related mortality, with most cases attributed to tobacco smoking, in which nicotine-derived nitrosamine ketone (NNK) is the most potent lung carcinogen. The ADAM17 protease is responsible for the ectodomain shedding of many pro-tumorigenic cytokines, growth factors and recept...

journal_title：Carcinogenesis

authors： Saad MI,McLeod L,Yu L,Ebi H,Ruwanpura S,Sagi I,Rose-John S,Jenkins BJ

更新日期：2020-06-17 00:00:00

abstract：:Epithelial cells derived from 46 human breast tissue samples of patients suffering from breast cancer have been cultivated. Twenty-five of these cell cultures stemmed from normal and 21 from tumor tissues. Moderate to large variations of protein levels of three protein kinase C (PKC) isoenzymes (alpha, delta and epsil...

journal_title：Carcinogenesis

authors： Imber R,Haberthür F,Meier F,Filipuzzi I,Almendral AC

更新日期：1994-02-01 00:00:00

abstract：:Aspirin- and non-steroidal anti-inflammatory drug (NSAID)-induced apoptosis is one of the important mechanisms for their anti-tumour effect in gastric cancer. We aimed at determining the role of bcl-2 family proteins and caspases in the apoptotic process. Gastric cancer cell lines AGS (wild-type p53) and MKN-28 (mutan...

journal_title：Carcinogenesis

authors： Zhou XM,Wong BC,Fan XM,Zhang HB,Lin MC,Kung HF,Fan DM,Lam SK

更新日期：2001-09-01 00:00:00

abstract：:An increased neuroendocrine (NE) cell population in prostate cancer is associated with more aggressive disease and recurrence after androgen-deprivation therapy, although the mechanism responsible is unknown. In this study, we report that the treatment of LNCaP cells with epidermal growth factor (EGF) in the presence ...

journal_title：Carcinogenesis

authors： Cortés MA,Cariaga-Martinez AE,Lobo MV,Martín Orozco RM,Motiño O,Rodríguez-Ubreva FJ,Angulo J,López-Ruiz P,Colás B

更新日期：2012-06-01 00:00:00

abstract：:Previous studies have shown that 1- and 3-nitrobenzo[a]pyrene (NBaP) were mutagenic in the Salmonella reversion assay without exogenous activation and that 1-, 3- and 6-NBaP were mutagenic in the presence of hepatocytes or liver homogenate (S9). In the present study, 1-, 3- and 6-NBaP were tested for mutagenicity in C...

journal_title：Carcinogenesis

authors： Hass BS,Heflich RH,Schol HM,Chou MW,Fu PP,Casciano DA

更新日期：1986-04-01 00:00:00

abstract：:We have established a protocol that allows qualitative and quantitative determination of butadiene monoepoxide-DNA adducts formed as a result of inhalation exposure to 1,3-butadiene. We observed that in this particular case in vivo samples required extensive sample purification to facilitate a low background. Sample p...

journal_title：Carcinogenesis

authors： Koivisto P,Sorsa M,Pacchierotti F,Peltonen K

更新日期：1997-02-01 00:00:00

abstract：:We have previously reported the disposition of benzo[a]pyrene (B[a]P) and its metabolites in male Sprague-Dawley rats following intratracheal instillation of [3H]B[a]P [Weyand, E.H. and Bevan, D.R. (1986) Cancer Res., 46, 5655-5661]. In some experiments, cannulas were implanted in the bile duct of the animals prior to...

journal_title：Carcinogenesis

authors： Bevan DR,Weyand EH

更新日期：1988-11-01 00:00:00

abstract：:Nucleotide excision repair (NER) removes bulky DNA lesions and is thus crucial for the protection against environmental carcinogens and UV light exposure. Deficiencies in NER cause increased mutation rates and chromosomal aberrations. Current methods for studying NER are mostly based on either quantitation of lesion r...

journal_title：Carcinogenesis

authors： Rubbi CP,Milner J

更新日期：2001-11-01 00:00:00

abstract：:The expression of A and P forms of glutathione S-transferase (GST-A and P), two cytochrome P-450 isoenzymes (P-450 PB3a and P-450 MC2), microsomal epoxide hydrolase (mEHb), glucose-6-phosphate dehydrogenase (G6PD) and gamma-glutamyltranspeptidase (gamma-GT) was compared in preneoplastic liver lesions and background pa...

journal_title：Carcinogenesis

authors： Tsuda H,Moore MA,Asamoto M,Inoue T,Ito N,Satoh K,Ichihara A,Nakamura T,Amelizad Z,Oesch F

更新日期：1988-04-01 00:00:00

abstract：:CXCR4 is a chemokine receptor probably involved in the homing of metastatic breast cancer, and its expression is modulated by tumor environmental stimuli such as hepatocyte growth factor (HGF) and hypoxia. Here, we demonstrate that, depending on the stimulus, different transcription factors can cooperate in enhancing ...

journal_title：Carcinogenesis

authors： Maroni P,Bendinelli P,Matteucci E,Desiderio MA

更新日期：2007-02-01 00:00:00

abstract：:Carcinogenic tobacco-specific nitrosamines are present in tobacco products and are believed to play a significant role in human cancers associated with tobacco use. Additional amounts of tobacco-specific nitrosamines could be formed endogenously. We tested this hypothesis by treating rats with nicotine and sodium nitr...

journal_title：Carcinogenesis

authors： Carmella SG,Borukhova A,Desai D,Hecht SS

更新日期：1997-03-01 00:00:00

abstract：:Semi-permeable magnetic microcapsules previously shown able to trap gastrointestinal carcinogens and containing polyethyleneimine (PEI) were covalently labelled with [14CH3], and administered for the first time to humans (six healthy volunteers, 1.3 microCi/dose) in gelatin capsules together with radio-opaque gut tran...

journal_title：Carcinogenesis

authors： Bingham SA,Ellul A,Cummings JH,O'Neill I

更新日期：1992-04-01 00:00:00

abstract：:Specific methylated derivatives of anthracene are mutagenic in S. typhimurium and have tumor-initiating activity on mouse skin. In this study, the mutagenic activities of 1-, 2-, and 9-methylanthracene, 2,9- and 9,10-dimethylanthracene, 2,9,-10-trimethylanthracene, 2,3,9,10-tetramethylanthracene, and the photo-oxide o...

journal_title：Carcinogenesis

authors： La Voie EJ,Coleman DT,Rice JE,Geddie NG,Hoffmann D

更新日期：1985-10-01 00:00:00

abstract：:Botryodiplodin induces DNA-protein cross-links (DPC) in mammalian cells in culture. Removal of the mycotoxin followed by incubation of cells in fresh medium leads to the gradual disappearance of DPC. The present experiments attempted to determine to what extent the repair mechanism acts through a system involving tran...

journal_title：Carcinogenesis

authors： Moulé Y,Darracq N

更新日期：1984-10-01 00:00:00