Anti-tumor promoting effects of naphthoquinone derivatives on short term Epstein-Barr early antigen activation assay and in mouse skin carcinogenesis.

abstract：:Human microsomal epoxide hydrolase (mEH) catalyzes a key step in the biotransformation of benzo[a]pyrene that yields the highly mutagenic (+)-anti-7,8-diol-9,10 epoxide (BPDE). Two polymorphisms have been described in the coding region of the mEH gene (EPHX1) that produce two protein variants: 113Tyr-->113His (exon 3)...

journal_title：Cancer letters

authors： To-Figueras J,Gené M,Gómez-Catalán J,Piqué E,Borrego N,Corbella J

更新日期：2001-11-28 00:00:00

abstract：:The treatment of HeLa cells with different concentrations of adriamycin (0, 5, 10, 25, 50 and 100 microg/ml) resulted in a significant and dose-dependent decline in the cell survival. Conversely, the frequency of micronuclei increased in a concentration-dependent manner. The micronuclei-induction and cell survival wer...

journal_title：Cancer letters

authors： Jagetia GC,Nayak V

更新日期：1996-12-20 00:00:00

abstract：:Tumors are highly heterogeneous at the patient, tissue, cellular, and molecular levels. This multi-scale heterogeneity poses significant challenges for effective therapies, which ideally must not only distinguish between tumorous and healthy tissue, but also fully address the wide variety of tumorous sub-clones. Commo...

journal_title：Cancer letters

authors： Ivey JW,Bonakdar M,Kanitkar A,Davalos RV,Verbridge SS

更新日期：2016-09-28 00:00:00

abstract：:Eighty samples of cervical invasive squamous cell carcinoma were examined for ras gene mutations using polymerase chain reaction (PCR) followed by restriction enzyme digestion. We found 28 (35%) cervical cancers contained ras mutations at H-ras codon 12, 49 (61%) at K-ras codon 12, and 5 (6%) at K-ras codon 13. There ...

journal_title：Cancer letters

authors： Wong YF,Chung TK,Cheung TH,Lam SK,Xu YG,Chang AM

更新日期：1995-08-16 00:00:00

abstract：:In order to characterize the enzymes involved in the purine nucleotide catabolism as indicators of invasiveness and aggressiveness of malignant gliomas, the degradation of extracellular nucleotides by five different glioma cell lines was investigated and compared with primary astrocytes. Rapid hydrolysis of extracellu...

journal_title：Cancer letters

authors： Wink MR,Lenz G,Braganhol E,Tamajusuku AS,Schwartsmann G,Sarkis JJ,Battastini AM

更新日期：2003-08-20 00:00:00

abstract：:A high-pressure liquid chromatographic (HPLC) method using a micro-particulate silica column and gradient elution was developed that separated 12-O-tetradecanoylphorbol-13-acetate (TPA) from 20-oxo-TPA; 12-O-tetradecanoylphorbol (TP); 13-O-acetylphorbol (PA), and from the diterpene alcohol, phorbol (P). A series of ot...

journal_title：Cancer letters

authors： Berry DL,Lieber MR,Fischer SM,Slaga TJ

更新日期：1977-09-01 00:00:00

abstract：:KMT2A rearranged (KMT2Ar) acute lymphoblastic leukaemia (ALL) is a high-risk genomic subtype, with long-term survival rates of less than 60% across all age groups. These cases present a complex clinical challenge, with a high incidence in infants, high-risk clinical features and propensity for aggressive relapse. KMT2...

journal_title：Cancer letters

authors： Forgione MO,McClure BJ,Eadie LN,Yeung DT,White DL

更新日期：2020-01-28 00:00:00

abstract：:Telomerase, a critical enzyme responsible for continuous cell growth, is repressed in most somatic cells except proliferating progenitor cells and activated lymphocytes, and activated in approximately 85% of human cancer tissues. Telomerase activity is a useful cancer-cell detecting marker in some types of cancers in ...

journal_title：Cancer letters

authors： Hiyama E,Hiyama K

更新日期：2003-05-15 00:00:00

abstract：:It has been nearly 9years since the FDA (Food and Drug Administration) approved the first anti-angiogenic drug (bevacizumab) for treatment of metastatic colorectal cancer. Other angiogenic inhibitors have since been approved or are in different stages of clinical trials. However, continued clinical and preclinical inv...

journal_title：Cancer letters

authors： Shojaei F

更新日期：2012-07-28 00:00:00

abstract：:Human RecQ helicases that share homology with E. coli RecQ helicase play critical roles in diverse biological activities such as DNA replication, transcription, recombination and repair. Mutations in three of the five human RecQ helicases (RecQ1, WRN, BLM, RecQL4 and RecQ5) result in autosomal recessive syndromes char...

journal_title：Cancer letters

authors： Mo D,Zhao Y,Balajee AS

更新日期：2018-01-28 00:00:00

abstract：:Retinoic acid and retinol induced functional and morphological differentiation of human promyelocytic leukemia cells (HL-60) into mature granulocytes, but did not induce functional or morphological differentiation of mouse myeloid leukemia cells (M1). Cellular retinoic acid-binding protein, but not retinol-binding pr...

journal_title：Cancer letters

authors： Takenaga K,Honma Y,Hozumi M

更新日期：1981-06-01 00:00:00

abstract：:Ursodeoxycholic acid (UDCA) and its derivatives were examined for anti-angiogenic activities by using the chick embryo chorioallantoic membrane (CAM) assay. The presence of UDCA or its derivatives inhibited angiogenesis in a dose-dependent manner; the dose required for half-maximal inhibition (ID50) was 4 microg per C...

journal_title：Cancer letters

authors： Suh H,Jung EJ,Kim TH,Lee HY,Park YH,Kim KW

更新日期：1997-02-26 00:00:00

abstract：:Soil samples were collected from the ground under the plants of Euphorbiaceae and Thymelaeaceae known to possess Epstein-Barr virus-activating diterpene esters. In a test system, the ether extracts of such soil samples at a concentration of 20 micrograms/ml induced Epstein-Barr virus early antigen in approximately 5-2...

journal_title：Cancer letters

authors： Ito Y,Ohigashi H,Koshimizu K,Yi Z

更新日期：1983-06-01 00:00:00

abstract：:The first experimental data suggesting that neoplasm development in animals might be influenced by infectious agents were published in the early 1900s. However, conclusive evidence that DNA viruses play a role in the pathogenesis of some human cancers only emerged in the 1950s, when Epstein-Barr virus (EBV) was discov...

journal_title：Cancer letters

authors： Elgui de Oliveira D

更新日期：2007-03-18 00:00:00

abstract：:The regulator of G protein signaling 10 (RGS10) protein is a GTPase activating protein that accelerates the hydrolysis of GTP and therefore canonically inactivates G proteins, ultimately terminating signaling. Rheb is a small GTPase protein that shuttles between its GDP- and GTP-bound forms to activate mTOR. Since RGS...

journal_title：Cancer letters

authors： Altman MK,Alshamrani AA,Jia W,Nguyen HT,Fambrough JM,Tran SK,Patel MB,Hoseinzadeh P,Beedle AM,Murph MM

更新日期：2015-12-01 00:00:00

abstract：:N-Acetyltransferase activities with p-aminobenzoic acid and 2-aminofluorene were determined in Anisakis simplex, a nematode found in the intestine of the salt water fish Trichiurus lepturus. The N-acetyltransferase activity was determined using an acetyl CoA recycling assay and high pressure liquid chromatography. The...

journal_title：Cancer letters

authors： Chung JG,Kuo HM,Lin TH,Ho CC,Lee JH,Lai JM,Levy GN,Weber WW

更新日期：1996-08-23 00:00:00

abstract：:As a promising method for local tumor treatment, nanosecond pulsed electric field (nsPEF) ablation elicits a potent anti-tumor immune response. However, the mechanism of the nsPEF-mediated anti-tumor immune response and its effects on the tumor microenvironment remains unclear. Here, we demonstrated that nsPEF treatme...

journal_title：Cancer letters

authors： Qian J,Chen T,Wu Q,Zhou L,Zhou W,Wu L,Wang S,Lu J,Wang W,Li D,Xie H,Su R,Guo D,Liu Z,He N,Yin S,Zheng S

更新日期：2020-12-28 00:00:00

abstract：:Triple-negative breast cancer (TNBC) treatment offers only limited benefits, and it is very relevant given the significant number of deaths that it causes. DNA repair pathways can enable tumor cells to survive DNA damage that is induced by chemotherapeutic or radiation treatments. Histone deacetylase inhibitors (HDACi...

journal_title：Cancer letters

authors： Wu YH,Hong CW,Wang YC,Huang WJ,Yeh YL,Wang BJ,Wang YJ,Chiu HW

更新日期：2017-08-01 00:00:00

abstract：:The identification of frameshift mutations in the coding region of the bax gene in Western cases of hereditary non-polyposis colorectal cancer provided evidence that the disease could be caused by the disruption of a tumor suppressor gene associated with microsatellite instability. In order to determine whether this o...

journal_title：Cancer letters

authors： Sakakibara T,Nakamura T,Yamamoto M,Matsuo M

更新日期：1998-02-27 00:00:00

abstract：:Alteration of the p16 tumor suppressor gene has been implicated as a critical lesion in the molecular pathogenesis of esophageal adenocarcinoma. The aim of this study was to characterize the spectrum of p16 alterations in surgically resected esophageal tissues, comprising histologically normal esophageal squamous and ...

journal_title：Cancer letters

authors： Hardie LJ,Darnton SJ,Wallis YL,Chauhan A,Hainaut P,Wild CP,Casson AG

更新日期：2005-01-20 00:00:00

abstract：:The heat shock protein 40kDa (HSP40/DNAJ) co-chaperones constitute the largest and most diverse sub-group of the heat shock protein (HSP) family. DNAJ are widely accepted as regulators of HSP70 function, but also have roles as co-chaperones for the HSP90 chaperone machine, and a growing number of biological functions ...

journal_title：Cancer letters

authors： Sterrenberg JN,Blatch GL,Edkins AL

更新日期：2011-12-22 00:00:00

abstract：:One of the most promising substances used in photodynamic therapy (PDT) is 5-aminolevulinic acid (ALA), which induces endogenous synthesis and accumulation of porphyrins in malignant cells. In this paper we have shown that both topical and intratumoral administration of ALA in a subcutaneously implanted mammary carcin...

journal_title：Cancer letters

authors： Casas A,Fukuda H,Meiss R,Batlle AM

更新日期：1999-07-01 00:00:00

abstract：:The mucosal glutathione content of the gastrointestinal wall amounted to 50-60% of its concentration in the liver. GSH S-aryltransferase activity (CDNB) was very low in the glandular stomach, colon and rectum amounting to only 5% of liver enzyme activity. There was a marked postpyloric increase in GSH S-aryltransferas...

journal_title：Cancer letters

authors： Siegers CP,Riemann D,Thies E,Younes M

更新日期：1988-05-01 00:00:00

abstract：:The effect of consumption of Brussels sprouts on the excretion of 8-oxo-7,8-dihydro-2'-deoxyguanosine (8-oxodG) into human urine was investigated. Ten non-smoking volunteers (five males and five females) were randomly assigned to two groups. Five volunteers started on a diet of 300 g of glucosinolate-free vegetables w...

journal_title：Cancer letters

authors： Verhagen H,de Vries A,Nijhoff WA,Schouten A,van Poppel G,Peters WH,van den Berg H

更新日期：1997-03-19 00:00:00

abstract：:The Arp2/3 complex and filamins play important roles in organization of actin cytoskeleton, and thus in cellular morphology and locomotion. We recently identified decreased expression of a gene for one of seven subunits of the Arp2/3 complex, the p41-Arc gene, and silencing of a filamin gene, the FLNc gene, in human g...

journal_title：Cancer letters

authors： Kaneda A,Kaminishi M,Sugimura T,Ushijima T

更新日期：2004-08-30 00:00:00

abstract：:Starting with an extract derived from the bark of Mundulea sericea Willd. (Leguminosae) that was active in the process of inhibiting 12-O-tetradecanoylphorbol 13-acetate (TPA)-induced ornithine decarboxylase activity (ODC) in cultured mouse epidermal ME 308 cells, the isoflavonoid munetone was isolated and identified ...

journal_title：Cancer letters

authors： Lee SK,Luyengi L,Gerhäuser C,Mar W,Lee K,Mehta RG,Kinghorn AD,Pezzuto JM

更新日期：1999-02-08 00:00:00

abstract：:Interferon-beta (IFN-β) is reported to augment anti-tumor effects by temozolomide in glioblastoma via down-regulation of MGMT. Promyelocytic leukemia (PML), a gene induced by IFN-β, is a tumor suppressor. Here, we report for the first time that in combination therapy, an IFN-β-induced increase in endogenous PML contri...

journal_title：Cancer letters

authors： Okazaki T,Kageji T,Kuwayama K,Kitazato KT,Mure H,Hara K,Morigaki R,Mizobuchi Y,Matsuzaki K,Nagahiro S

更新日期：2012-10-28 00:00:00

abstract：:Antitumor effects of nine components of a herbal medicine, 'Sho-saiko-to', were investigated on human hepatoma cell lines (PLC/PRF/5, Hep-G2), human liver cells (Chang) and a human pancreatic cancer cell line (BxPC-3). The concentration of each component required for 50% inhibition of cell growth of PLC/PRF/5 cells wa...

journal_title：Cancer letters

authors： Motoo Y,Sawabu N

更新日期：1994-10-28 00:00:00

abstract：:We conducted a pilot study to assess the feasibility using the Electoral Register to carry out a cervical cancer screening programme on a Health District basis. A random sample of 500 names and addresses were drawn from a computerised list of the Electoral Register from three Electoral Wards in Oxford. A pilot study s...

journal_title：Cancer letters

authors： Cook GA,Wald NJ

更新日期：1985-09-30 00:00:00

abstract：:Recent evidence suggests that the cut-off for age utilized in neuroblastoma risk groups should be increased from the 365-day cut-off currently in use. Separate cooperative group analyses were performed by German and Italian groups and two analyses by the Children's Oncology Group (North America, Australia, New Zealand...

journal_title：Cancer letters

authors： London WB,Boni L,Simon T,Berthold F,Twist C,Schmidt ML,Castleberry RP,Matthay KK,Cohn SL,De Bernardi B

更新日期：2005-10-18 00:00:00