Factors influencing the activity of dimethylnitrosamine demethylase in hamster, rat and chicken liver microsomes.

Abstract:

:In vitro metabolism of dimethylnitrosamine (DMN) by liver microsomal fractions of hamster, rat and chicken revealed that the three species under certain assay conditions, were capable of metabolizing DMN at different rates (hamster greater than rat greater than chicken). The magnitude of the demethylase activity was found to be dependent on the nature of the buffer, the concentration of cytochrome P-450 (P-450) and the concentration of the substrate DMN. Enzyme activity was higher in Hepes buffer than in the phosphate buffer. Concentrations of phosphate higher than 20 mM inhibited the activity of the rat and chicken enzymes. This effect of phosphate was not a consequence of increase in ionic strength since KCl over a wide range of concentration failed to inhibit the activity.

journal_name

Cancer Lett

journal_title

Cancer letters

authors

Prasanna HR,Lotlikar PD,Brandt C,Magee PN

doi

10.1016/0304-3835(85)90169-7

subject

Has Abstract

pub_date

1985-02-01 00:00:00

pages

25-32

issue

1

eissn

0304-3835

issn

1872-7980

pii

0304-3835(85)90169-7

journal_volume

26

pub_type

杂志文章
  • Fusion genes as biomarkers in pediatric cancers: A review of the current state and applicability in diagnostics and personalized therapy.

    abstract::The incidence of pediatric cancers is rising steadily across the world, along with the challenges in understanding the molecular mechanisms and devising effective therapeutic strategies. Pediatric cancers are presented with diverse molecular characteristics and more distinct subtypes when compared to adult cancers. Re...

    journal_title:Cancer letters

    pub_type: 杂志文章

    doi:10.1016/j.canlet.2020.11.015

    authors: Vellichirammal NN,Chaturvedi NK,Joshi SS,Coulter DW,Guda C

    更新日期:2021-02-28 00:00:00

  • Gastrointestinal cancers: influence of gut microbiota, probiotics and prebiotics.

    abstract::Cancers of the gastrointestinal (GI) tract continue to represent a major health problem, despite progress in therapy. Gut microbiota is a key element related to the genesis of GI cancers, countless papers addressing this burning issue across the world. We provide an updated knowledge of the involvement of gut microbio...

    journal_title:Cancer letters

    pub_type: 杂志文章,评审

    doi:10.1016/j.canlet.2013.08.013

    authors: Serban DE

    更新日期:2014-04-10 00:00:00

  • Synergistic cytotoxic effect of human recombinant tumor necrosis factor alpha combined with dihydroambazone.

    abstract::Dihydroambazone (DHA) is a water-soluble derivative of the experimental anticancer drug ambazone. In vitro, a combination of DHA and human recombinant tumor necrosis factor alpha (TNF) exerted a strong synergism of cytotoxicity against both mouse melanoma B16K cells and the TNF-sensitive mouse fibroblast line L-M (S)....

    journal_title:Cancer letters

    pub_type: 杂志文章

    doi:10.1016/0304-3835(90)90032-s

    authors: Baumgart J,Gase K,Schulze W,Suehnel J,Gutsche W,Behnke D

    更新日期:1990-11-05 00:00:00

  • Cdk1 and Cdk2 complexes (cyclin dependent kinases) in apoptosis: a role beyond the cell cycle.

    abstract::The family of cyclin-dependent kinase complexes (Cdks) are well known for their role in the cell division cycle. What is less well known, however, is that Cdks also participate in a subset of apoptosis programs. Evidence for the role of Cdks in apoptosis comes from a variety of experimental approaches, including studi...

    journal_title:Cancer letters

    pub_type: 杂志文章,评审

    doi:10.1016/j.canlet.2004.08.005

    authors: Golsteyn RM

    更新日期:2005-01-20 00:00:00

  • SOX7, down-regulated in colorectal cancer, induces apoptosis and inhibits proliferation of colorectal cancer cells.

    abstract::The sex-determining region Y-box 7 (Sox7) is a member of high mobility group (HMG) transcription factor family, essential for embryonic development and endoderm differentiation. Deregulation of Wnt signaling pathway is a hallmark of colorectal cancer. Our results showed that the expression level of SOX7 was frequently...

    journal_title:Cancer letters

    pub_type: 杂志文章

    doi:10.1016/j.canlet.2008.11.014

    authors: Zhang Y,Huang S,Dong W,Li L,Feng Y,Pan L,Han Z,Wang X,Ren G,Su D,Huang B,Lu J

    更新日期:2009-05-08 00:00:00

  • Autocrine TGF-β1/miR-200s/miR-221/DNMT3B regulatory loop maintains CAF status to fuel breast cancer cell proliferation.

    abstract::Cancer-associated fibroblasts (CAFs) remain active even in the absence of cancer cells. However, the molecular mechanism underlying the sustained active status of CAFs is largely unrevealed. We found that in CAFs, DNMT3B was not only a target of miR-200b, miR-200c and miR-221, but was able to induce DNA methylation of...

    journal_title:Cancer letters

    pub_type: 杂志文章

    doi:10.1016/j.canlet.2019.02.044

    authors: Tang X,Tu G,Yang G,Wang X,Kang L,Yang L,Zeng H,Wan X,Qiao Y,Cui X,Liu M,Hou Y

    更新日期:2019-06-28 00:00:00

  • Effects of noradrenaline on interstitial fluid pressure in induced rat mammary tumours.

    abstract::Interstitial fluid pressure was measured by the wick-in-needle technique in DMBA-induced rat mammary tumours during resting conditions and during noradrenaline infusion. The rate of infusion was chosen to increase the systemic blood pressure by 30-40 mmHg, known to result in a markedly increased vascular resistance of...

    journal_title:Cancer letters

    pub_type: 杂志文章

    doi:10.1016/0304-3835(85)90181-8

    authors: Tveit E,Hultborn R,Weiss L

    更新日期:1985-07-01 00:00:00

  • The induction of sister chromatid exchanges by dihydrodiols derived from 7,12-dimethylbenz[a]anthracene and 3-methylcholanthrene.

    abstract::The in vitro induction of sister chromatid exchanges (SCEs) in Chinese hamster ovary (CHO) cells by the polycyclic hydrocarbons, 7,12-dimethylbena[a]anthracene and 3-methylcholanthrene and some of the related dihydrodiols was investigated. Increased numbers of SCEs were seen in the chromosomes of cells exposed to non-...

    journal_title:Cancer letters

    pub_type: 杂志文章

    doi:10.1016/s0304-3835(79)80075-0

    authors: Pal K,Grover PL,Sims P

    更新日期:1979-06-01 00:00:00

  • Difluoro-phenyl-ethyl(4-aminopropylamidinohydrazone): an irreversible inhibitor for both ornithine and S-adenosylmethionine decarboxylases and its effect on human lymphoid leukemia Molt 4B cells.

    abstract::Difluoro-phenyl-ethyl(4-aminopropylamidinohydrazone) (DFPA) was synthesized as an irreversible inhibitor of ornithine and S-adenosylmethionine decarboxylases and analyzed for antiproliferative effects on leukemia cells. The compound irreversibly inhibited ornithine and S-adenosylmethione decarboxylases. This inhibitio...

    journal_title:Cancer letters

    pub_type: 杂志文章

    doi:10.1016/0304-3835(88)90096-1

    authors: Hibasami H,Sakurai M,Maekawa S,Murata T,Nakashima K

    更新日期:1988-03-01 00:00:00

  • Sleeping beauty--a mouse model for all cancers?

    abstract::Sleeping Beauty (SB) is a genetically engineered insertional mutagenesis system. Its ability to rapidly induce cancer in SB-transgenic mice as well as the ease of identification of the mutated genes suggest important roles for SB in the discovery of novel cancer genes as well as the generation of models of human cance...

    journal_title:Cancer letters

    pub_type: 杂志文章,评审

    doi:10.1016/j.canlet.2011.11.006

    authors: Howell VM

    更新日期:2012-04-01 00:00:00

  • Bovine milk-derived exosomes for drug delivery.

    abstract::Exosomes are biological nanovesicles that are involved in cell-cell communication via the functionally-active cargo (such as miRNA, mRNA, DNA and proteins). Because of their nanosize, exosomes are explored as nanodevices for the development of new therapeutic applications. However, bulk, safe and cost-effective produc...

    journal_title:Cancer letters

    pub_type: 杂志文章

    doi:10.1016/j.canlet.2015.10.020

    authors: Munagala R,Aqil F,Jeyabalan J,Gupta RC

    更新日期:2016-02-01 00:00:00

  • Aiming at the sweet side of cancer: aberrant glycosylation as possible target for personalized-medicine.

    abstract::One of the frontiers in cancer personalized-medicine aims at glycosylation. Cells are covered with a dense sugar coat of glycolipids, glycoproteins and free glycans. In cancer, the characteristic cell surface glycosylation is frequently transformed due to altered expression of glycan-modifying enzymes. This often lead...

    journal_title:Cancer letters

    pub_type: 杂志文章,评审

    doi:10.1016/j.canlet.2013.10.005

    authors: Padler-Karavani V

    更新日期:2014-09-28 00:00:00

  • Folate enzymes in Ehrlich ascites carcinoma-bearing mice.

    abstract::The activity of 4 enzymes involved in the formation and interconversion of folate coenzymes has been examined in liver and kidney of healthy and Ehrlich ascites carcinoma-bearing mice. In the liver, a 50% increase of methylenetetrahydrofolate reductase activity was shown soon after tumour cell inoculation, while the a...

    journal_title:Cancer letters

    pub_type: 杂志文章

    doi:10.1016/s0304-3835(84)80048-8

    authors: Chmurzyńska W,Manteuffel-Cymborowska M,Sikora E,Grzelakowska-Sztabert B

    更新日期:1984-12-01 00:00:00

  • MCF-7 breast cancer cell line grown in agarose culture for study of COX-2 inhibitors in three-dimensional growth system.

    abstract::Herein we report a method for studying slow acting pharmaceutical COX-2 inhibitors in the MCF-7 breast cancer cell line where cells are grown in a three-dimensional format within an agarose matrix. The cancer cells are suspended in agarose and plated in a cell culture dish, where they will form small multicellular 'tu...

    journal_title:Cancer letters

    pub_type: 杂志文章

    doi:10.1016/j.canlet.2003.10.030

    authors: Kinder DH,Aulthouse AL

    更新日期:2004-03-08 00:00:00

  • Activation of blood coagulation and the activity of cancer procoagulant (EC 3.4.22.26) in breast cancer patients.

    abstract::The activity of cancer procoagulant (CP), prothrombin time (PT), activated partial thromboplastin time (APTT), the concentration of thrombin-antithrombin complexes (TAT) and the concentration of fibrinogen were analysed in blood of breast cancer patients scheduled for surgery. The serum level of CP activity was depend...

    journal_title:Cancer letters

    pub_type: 杂志文章

    doi:10.1016/s0304-3835(99)00230-x

    authors: Mielicki WP,Tenderenda M,Rutkowski P,Chojnowski K

    更新日期:1999-11-01 00:00:00

  • 2-Methoxyestradiol synergizes with sorafenib to suppress hepatocellular carcinoma by simultaneously dysregulating hypoxia-inducible factor-1 and -2.

    abstract::Sorafenib is the approved systemic drug of choice for advanced hepatocellular carcinoma (HCC), but has demonstrated limited benefits because of drug resistance. 2-Methoxyestradiol (2ME2) has been shown to be a promising anticancer drug against various types of cancers and acts by dysregulating hypoxia-inducible factor...

    journal_title:Cancer letters

    pub_type: 杂志文章

    doi:10.1016/j.canlet.2014.09.011

    authors: Ma L,Li G,Zhu H,Dong X,Zhao D,Jiang X,Li J,Qiao H,Ni S,Sun X

    更新日期:2014-12-01 00:00:00

  • Characterization of sperm protein 17 in human somatic and neoplastic tissue.

    abstract::Sperm protein 17 (Sp17) is a highly antigenic, testes-specific protein whose known function is to bind sperm to the zona pellucida. However, the Sp17 gene has been recently detected in normal non-testes tissues and malignant neoplasias. As the role of Sp17 in non-testes tissues is unknown, the characterization of the ...

    journal_title:Cancer letters

    pub_type: 杂志文章

    doi:10.1016/s0304-3835(02)00350-6

    authors: De Jong A,Buchli R,Robbins D

    更新日期:2002-12-05 00:00:00

  • Prediction of persistent vaginal intraepithelial neoplasia in previously hysterectomized women by high-risk HPV DNA detection.

    abstract:AIM:To estimate the incidence and latency of Vaginal Intraepithelial Neoplasia (VAIN) in women previously hysterectomized for benign/malign pathology and to evaluate the role of high risk HPVs in the prediction of persistent or recurrent disease. SUBJECTS AND METHODS:830 women with prior hysterectomy for benign/malign...

    journal_title:Cancer letters

    pub_type: 杂志文章

    doi:10.1016/j.canlet.2006.09.003

    authors: Frega A,French D,Piazze J,Cerekja A,Vetrano G,Moscarini M

    更新日期:2007-05-08 00:00:00

  • Specific species of intestinal bacteria influence the induction of aberrant crypt foci by 1,2-dimethylhydrazine in rats.

    abstract::To shed light on the association of intestinal microflora with the development of colon cancer, we studied the modifying effects of intestinal microflora on the occurrence of 1,2-dimethylhydrazine (DMH)-induced colonic aberrant crypt foci (ACF) in germfree (GF), gnotobiotic (GB) and conventionalized (Cvd) rats. In the...

    journal_title:Cancer letters

    pub_type: 杂志文章

    doi:10.1016/s0304-3835(97)04698-3

    authors: Onoue M,Kado S,Sakaitani Y,Uchida K,Morotomi M

    更新日期:1997-02-26 00:00:00

  • Biomimetic models to examine microenvironmental regulation of glioblastoma stem cells.

    abstract::Glioblastoma multiforme (GBM), a malignant brain tumor, is the deadliest form of human cancer with low survival rates because of its highly invasive nature. In recent years, there has been a growing appreciation for the role that glioblastoma stem cells (GSCs) play during tumorigenesis and tumor recurrence of GBM. GSC...

    journal_title:Cancer letters

    pub_type: 杂志文章,评审

    doi:10.1016/j.canlet.2018.05.007

    authors: Nakod PS,Kim Y,Rao SS

    更新日期:2018-08-10 00:00:00

  • The timing of insulin/c-Ras signal is critical for its effect upon the differentiation of C3H10T1/2-derived preadipocytes.

    abstract::The effect of the peptide hormone insulin upon the differentiation of a 10T1/2-derived preadipocytic line was found to display a potent time-dependence. Insulin addition before cell confluence strongly enhanced differentiation, while addition after confluence had no effect. In keeping with the role of c-Ras as a downs...

    journal_title:Cancer letters

    pub_type: 杂志文章

    doi:10.1016/s0304-3835(97)04724-1

    authors: Preston T,Brownell H,Raptis L

    更新日期:1997-05-19 00:00:00

  • Nitric oxide as a target of complementary and alternative medicines to prevent and treat inflammation and cancer.

    abstract::Nitric oxide (NO) and associated reactive nitrogen species (RNS) are involved in many physiological functions. There has been an ongoing debate to whether RNS can inhibit or perpetuate chronic inflammation and associated carcinogenesis. Although the final outcome depends on the genetic make-up of its target, the surro...

    journal_title:Cancer letters

    pub_type: 杂志文章,评审

    doi:10.1016/j.canlet.2008.03.024

    authors: Hofseth LJ

    更新日期:2008-09-08 00:00:00

  • Effect of protease inhibitors on DNA amplification in SV40-transformed Chinese hamster embryo cells.

    abstract::We have examined the effect of protease inhibitors on radiation-induced DNA amplification in vitro using an SV40-transformed Chinese hamster embryo cell line. DNA from cells irradiated with X-rays (10 Gy) or ultraviolet radiation (8 J/m2) resulted in an 8-fold or greater amplification of SV40 sequences compared with u...

    journal_title:Cancer letters

    pub_type: 杂志文章

    doi:10.1016/0304-3835(91)90083-t

    authors: Flick MB,Kennedy AR

    更新日期:1991-02-01 00:00:00

  • Inhibition of phthalocyanine-sensitized photohemolysis of human erythrocytes by polyphenolic antioxidants: description of quantitative structure-activity relationships.

    abstract::Polyphenolic antioxidants protected against Al-phthalocyanine tetrasulfonate-sensitized photohemolysis of human erythrocytes. A quantitative structure-activity relationship has been obtained to describe the protective effects of di- and trihydroxybenzenes: log cI(50) (microM)=(1.8620+/-1.5565)+(3.6366+/-2.8245) E(1)(7...

    journal_title:Cancer letters

    pub_type: 杂志文章

    doi:10.1016/s0304-3835(00)00469-9

    authors: Maroziene A,Kliukiene R,Sarlauskas J,Cenas N

    更新日期:2000-08-31 00:00:00

  • Influence of lithium on mammary tumor growth in vivo.

    abstract::The possibility that lithium ions stimulate growth of mammary tumors in vivo has been suggested by their mitogenic action in vitro on normal and neoplastic mammary epithelium [8] and their clinical use as stimulators of neutrophil production in tumor-bearing patients treated with cytotoxic drugs [14,15]. Three experim...

    journal_title:Cancer letters

    pub_type: 杂志文章

    doi:10.1016/0304-3835(80)90090-7

    authors: Ziche M,Maiorana A,Oka T,Gullino PM

    更新日期:1980-05-01 00:00:00

  • Mutagenic virus replication in human tumor cells.

    abstract::Herpes simplex virus was grown in different lines of human tumor and normal cells. The progeny virus was assayed for resistance to iododeoxycytidine, an indicator of a forward mutation in the virus genome. Virus grown in cells from 4 of 5 tumor lines demonstrated greater fractions mutated to iododeoxycytidine resistan...

    journal_title:Cancer letters

    pub_type: 杂志文章

    doi:10.1016/0304-3835(82)90026-x

    authors: Bockstahler LE,Lytle CD,Lubiniecki AS,Cantwell JM,Galleshaw JA

    更新日期:1982-11-01 00:00:00

  • LYRM2 directly regulates complex I activity to support tumor growth in colorectal cancer by oxidative phosphorylation.

    abstract::Oxidative phosphorylation (OXPHOS) in cancer has attracted a considerable attention in the past decades, and accumulated evidence has suggested that it plays an important role in tumor proliferation, metastasis and drug resistance. However, the mechanisms involved in these effects are still ambiguous to date. In this ...

    journal_title:Cancer letters

    pub_type: 杂志文章

    doi:10.1016/j.canlet.2019.04.021

    authors: Huang Q,Chen Z,Cheng P,Jiang Z,Wang Z,Huang Y,Yang C,Pan J,Qiu F,Huang J

    更新日期:2019-07-28 00:00:00

  • Staurosporine-induced G(1) arrest in cancer cells depends on an intact pRB but is independent of p16 status.

    abstract::Staurosporine and its derivative 7-hydroxystaurosporine are protein kinase inhibitors that are being considered for treatments of cancers. Several recent studies have shown that cells with defective pRB protein are resistant to the G(1) cell cycle-inhibiting effects of staurosporine compounds. In this study, we examin...

    journal_title:Cancer letters

    pub_type: 杂志文章

    doi:10.1016/s0304-3835(02)00101-5

    authors: Zhou W,Lin Y,Wersto R,Chrest J,Gabrielson E

    更新日期:2002-09-08 00:00:00

  • Frequent loss of heterozygosity on multiple chromosomes in Chinese esophageal squamous cell carcinomas.

    abstract::Analysis of the loss of heterozygosity (LOH) detected by polymerase chain reaction techniques using 18 polymorphic markers localized to chromosomes 3p, 5, 17, and 18q in 40 Hong Kong Chinese esophageal squamous cell carcinoma (ESC) patients showed that multiple alterations on several chromosomes are involved in ESC de...

    journal_title:Cancer letters

    pub_type: 杂志文章

    doi:10.1016/s0304-3835(01)00577-8

    authors: Ko JM,Wong CP,Tang CM,Lau KW,Lung ML

    更新日期:2001-09-20 00:00:00

  • Synergistic effects of (-)-epigallocatechin gallate with sulindac against colon carcinogenesis of rats treated with azoxymethane.

    abstract::(-)-Epigallocatechin gallate (EGCG), a major constituent of green tea, has been shown to exhibit anti-cancer activity. Sulindac is also well known as a cancer-preventive agent against colon cancer, but its usage is restricted because of its adverse effects, as exemplified by gastrointestinal bleeding. In the present s...

    journal_title:Cancer letters

    pub_type: 杂志文章

    doi:10.1016/s0304-3835(01)00767-4

    authors: Ohishi T,Kishimoto Y,Miura N,Shiota G,Kohri T,Hara Y,Hasegawa J,Isemura M

    更新日期:2002-03-08 00:00:00