Rare frequency of activation of the Ki-ras gene in rat colon tumors induced by heterocyclic amines: possible alternative mechanisms of human colon carcinogenesis.

abstract：:Ultraviolet (UV) light-induced activation of activator protein-1 (AP-1), resulting at least in part from oxidative stress, promotes skin carcinogenesis. It has not yet been determined whether elevating cellular phase II enzymes and glutathione (GSH) levels inhibits the AP-1 activation. We have, therefore, examined the...

journal_title：Molecular carcinogenesis

authors： Zhu M,Zhang Y,Cooper S,Sikorski E,Rohwer J,Bowden GT

更新日期：2004-11-01 00:00:00

abstract：:We examined the expression of two groups of matrix metalloproteinases (MMPs), stromelysin and interstitial collagenase, in human skin cancer by northern blot analysis and in situ hybridization. Stromelysin-3 (ST-3) mRNA was overexpressed more than tenfold in 17 of 19 (89%) specimens of basal cell carcinoma (BCC) but i...

journal_title：Molecular carcinogenesis

authors： Majmudar G,Nelson BR,Jensen TC,Voorhees JJ,Johnson TM

更新日期：1994-01-01 00:00:00

abstract：:Mutations in the Ki-ras oncogene and the p53 tumor suppressor gene are known to occur at high frequencies in human colon cancers. We measured the frequency of mutations in these two genes in colon adenocarcinomas obtained from a widely used experimental model of human colon carcinogenesis: F344 rats treated with the c...

journal_title：Molecular carcinogenesis

authors： Erdman SH,Wu HD,Hixson LJ,Ahnen DJ,Gerner EW

更新日期：1997-06-01 00:00:00

abstract：:In human lung cancers, alterations of both a dominant oncogene (ras) and a tumor suppressor gene (p53) have been identified. Polymerase chain reaction (PCR) analysis of mRNA was used to amplify the c-Ki-ras-2 and p53 genes from Syrian golden hamsters. The PCR products were confirmed by predicted-size analysis, probing...

journal_title：Molecular carcinogenesis

authors： Oreffo VI,Lin HW,Gumerlock PH,Kraegel SA,Witschi H

更新日期：1992-01-01 00:00:00

abstract：:Although there are extensive studies on the genetics of bladder cancer, several questions remain unanswered. One of the pathways which are altered in bladder cancer is the mTOR signaling pathway. In the present study, we analyzed the expression of Rheb gene and genetic alterations in the LKB1 gene which are the key co...

journal_title：Molecular carcinogenesis

authors： Tigli H,Seven D,Tunc M,Sanli O,Basaran S,Ulutin T,Buyru N

更新日期：2013-08-01 00:00:00

abstract：:The presence of RD(INK4/ARF) (RD) enhancer in the INK4-ARF locus provides a novel mechanism to simultaneously increase the transcription of p15(INK4b) (p15), p14ARF (p14), and p16(INK4a) (p16). While such upregulation can be repressed through interactions between RD and oncoproteins CDC6 and BMI1, little is known abou...

journal_title：Molecular carcinogenesis

authors： Poi MJ,Knobloch TJ,Sears MT,Warner BM,Uhrig LK,Weghorst CM,Li J

更新日期：2015-07-01 00:00:00

abstract：:N(6)-isopentenyladenosine (i6A) inhibits the tumor cell growth by inducing cell apoptosis in various cancer cell lines. However, little is known regarding the mechanisms by which the drug induces cell apoptosis. In this study, we further explored the molecular mechanisms of i6A as an anticancer agent on a human breast...

journal_title：Molecular carcinogenesis

authors： Laezza C,Malfitano AM,Di Matola T,Ricchi P,Bifulco M

更新日期：2010-10-01 00:00:00

abstract：:Aberrant microRNA (miRNA) expression is involved in tumorigenesis of several cancers, including non-small cell lung cancer (NSCLC). Furthermore, expression of some miRNAs has been shown to be under epigenetic regulation. However, less is known regarding the role of miRNA methylation in NSCLC development or clinical ou...

journal_title：Molecular carcinogenesis

authors： Tan W,Gu J,Huang M,Wu X,Hildebrandt MA

更新日期：2015-06-01 00:00:00

abstract：:The majority of human neoplasms have aberrations in the retinoblastoma pathway due to hyperactivation of cyclin-dependent kinases (CDK). Based on this observation, novel small molecules, such as flavopiridol and UCN-01, are being developed and are currently being tested in the clinic. Efforts to develop CDK modulators...

journal_title：Molecular carcinogenesis

authors： Lahusen T,De Siervi A,Kunick C,Senderowicz AM

更新日期：2003-04-01 00:00:00

abstract：:The aims of the present study are to investigate sub-cellular location, differential expression in different cancer stages and functional role of FAM134B in colon cancer development. FAM134B expression was studied and quantified at protein and mRNA levels in cell lines using immunocytochemistry, Western blot and real-...

journal_title：Molecular carcinogenesis

authors： Islam F,Gopalan V,Wahab R,Smith RA,Qiao B,Lam AK

更新日期：2017-01-01 00:00:00

abstract：:2-Methoxyestradiol (2-ME), an endogenous metabolite of 17beta-estradiol, is present in human blood and urine. Here we show for the first time that 2-ME significantly inhibited the growth of normal prostate epithelial cells and androgen-dependent LNCaP and androgen-independent DU145 prostate cancer cells. This growth i...

journal_title：Molecular carcinogenesis

authors： Kumar AP,Garcia GE,Slaga TJ

更新日期：2001-07-01 00:00:00

abstract：:Identification of long noncoding RNA (lncRNA) expression quantitative trait loci (lncR-eQTL) that associated with lung cancer can provide insights into regulatory mechanisms of lncRNA, and help reveal the role of lncRNA in lung cancer. A two-stage case-control design was implemented in this study. We first selected th...

journal_title：Molecular carcinogenesis

authors： Sun Q,Wang Y,Fan J,Li Z,Zhang J,Wang L,Fan X,Ji M,Zhu M,Dai J,Ma H,Jin G,Hu Z,Shen H

更新日期：2019-07-01 00:00:00

abstract：:Microsatellite instability (MI) and loss of heterozygosity (LOH) were examined in mammary tumors induced in Sprague-Dawley x F344 F1 female rats by 2-amino-l-methyl-6-phenylimidazo[4,5-b]pyridine (PhIP). Examination of 62 microsatellite loci revealed MI in nine of 15 (60%) PhIP-induced mammary tumors, and five of thes...

journal_title：Molecular carcinogenesis

authors： Toyota M,Ushijima T,Weisburger JH,Hosoya Y,Canzian F,Rivenson A,Imai K,Sugimura T,Nagao M

更新日期：1996-03-01 00:00:00

abstract：:Colorectal cancer (CRC) is one of the most common malignant tumors worldwide. As tumor metastasis is the leading cause of death in patients with CRC, it is important to elucidate the molecular mechanisms that drive CRC metastasis. Studies have shown a close relationship between Iroquois homeobox (IRX) family genes and...

journal_title：Molecular carcinogenesis

authors： Zhu Q,Wu Y,Yang M,Wang Z,Zhang H,Jiang X,Chen M,Jin T,Wang T

更新日期：2019-11-01 00:00:00

abstract：:The DNA repair gene Ku70 plays a key role in the DNA double strand break (DSB) repair system. Defects in DSB repair capacity can lead to genomic instability. We hypothesized that the Ku70 C-1310G polymorphism (rs2267437) was associated with risk of renal cell carcinoma (RCC). We genotyped the Ku70 C-1310G polymorphism...

journal_title：Molecular carcinogenesis

authors： Wang W,Pan X,Huo X,Yan F,Wang M,Wang D,Gao Y,Cao Q,Luo D,Qin C,Yin C,Zhang Z

更新日期：2012-10-01 00:00:00

abstract：:Atypical adenomatous hyperplasia (AAH) of the prostate is characterized by lobular proliferation of closely packed small acini. It is hypothesized that AAH is a precursor lesion for low-grade prostate cancer arising from the transition zone. Telomere dysfunction is common during malignant transformation of epithelia. ...

journal_title：Molecular carcinogenesis

authors： Cheng L,Montironi R,Davidson DD,Wang M,Lopez-Beltran A,Zhang S

更新日期：2019-07-01 00:00:00

abstract：:Tumor-associated stromal cells are dynamic characters that endorse the carcinogenic process in a multitude of ways. The tumor microenvironment plays a crucial role throughout the tumor progression, which includes initiation, growth, invasion, and metastasis. The tumor microenvironment consists of cellular and non-cell...

journal_title：Molecular carcinogenesis

authors： Spaw M,Anant S,Thomas SM

更新日期：2017-04-01 00:00:00

abstract：:microRNAs (miRNA) silence target genes through Watson-Crick based binding to the 3'untranslated regions (3'UTR). Thus, polymorphisms in the miRNA-binding sites may disrupt this process and play a potential role in cancer pathogenesis. Integrins have been implicated in the genesis and development of many tumors. This s...

journal_title：Molecular carcinogenesis

authors： Liu J,Huang J,He Y,Liu J,Liao B,Liao G

更新日期：2014-04-01 00:00:00

abstract：:N-nitrosomethylbenzylamine (NMBA)-induced rat esophageal tumorigenesis is an important model for squamous cell carcinoma of the human esophagus. In this model, previous studies have shown that the GGA-->GAA Ha-ras codon 12 mutation is present in the majority of papillomas. No other Ha-ras mutation has been identified....

journal_title：Molecular carcinogenesis

authors： Liston BW,Gupta A,Nines R,Carlton PS,Kresty LA,Harris GK,Stoner GD

更新日期：2001-09-01 00:00:00

abstract：:Arsenic is a known human carcinogen. However, the mechanism of how arsenic induces cell transformation remains unclear. In this study, we demonstrated that long-term exposure to sodium arsenite at low-dose (2 µM) increases cell proliferation and neoplastic transformation in a mouse epidermal cell model, JB6 promotion-...

journal_title：Molecular carcinogenesis

authors： Zhang Y,Wang Q,Guo X,Miller R,Guo Y,Yang HS

更新日期：2011-07-01 00:00:00

abstract：:Loss or decrease of wild type BRCA1 function, by either mutation or reduced expression, has a role in hereditary and sporadic human breast and ovarian cancers. We report here that the PI3K/AKT pathway is constitutively active in BRCA1-defective human breast cancer cells. Levels of phospho-AKT are sustained even after ...

journal_title：Molecular carcinogenesis

authors： Yi YW,Kang HJ,Kim HJ,Hwang JS,Wang A,Bae I

更新日期：2013-09-01 00:00:00

abstract：:Cancer cells mainly rely on glycolysis for energetic needs, and mitochondrial ATP production is almost inactive. However, cancer cells require the integrity of mitochondrial functions for their survival, such as the maintenance of the internal membrane potential gradient (DeltaPsim). It thus may be predicted that Delt...

journal_title：Molecular carcinogenesis

authors： Loiseau D,Morvan D,Chevrollier A,Demidem A,Douay O,Reynier P,Stepien G

更新日期：2009-08-01 00:00:00

abstract：:Gliomas are common, aggressive central nervous system tumors with poor overall survival rates. Despite improvements in neurosurgery, chemotherapy, and radiotherapy, the outcomes of patients with malignant gliomas remain poor. Therefore, increased knowledge of the molecular mechanisms that regulate glioma progression i...

journal_title：Molecular carcinogenesis

authors： Zhou Y,Tan Z,Chen K,Wu W,Zhu J,Wu G,Cao L,Zhang X,Zeng X,Li J,Zhang W

更新日期：2018-09-01 00:00:00

abstract：:Both ultraviolet irradiation and oxidation of DNA produce a variety of pyrimidine base damages. A human endonuclease recognizes such altered bases on these DNA substrates. This human endonuclease incises ultraviolet-irradiated DNA exclusively at sites of photochemically modified cytosines. The precise sites of incisio...

journal_title：Molecular carcinogenesis

authors： Gallagher PE,Weiss RB,Brent TP,Duker NJ

更新日期：1989-01-01 00:00:00

abstract：:We found that caffeine significantly inhibited epidermal growth factor (EGF)- and 12-O-tetradecanoylphorbol-13-acetate (TPA)-induced cell transformation in the JB6 mouse epidermal cell line. The tumor promoter-induced cell transformation was also blocked by treatment with an adenosine A1 receptor antagonist, 8-phenylt...

journal_title：Molecular carcinogenesis

authors： Nomura M,Ichimatsu D,Moritani S,Koyama I,Dong Z,Yokogawa K,Miyamoto K

更新日期：2005-09-01 00:00:00

abstract：:Rapid advances in multimodality therapy have not significantly improved the overall 5-yr survival of oral cancer patients in the past two decades, thereby underscoring the need for molecular therapeutics. The development of new treatment strategies for more effective management of oral cancer requires identification o...

journal_title：Molecular carcinogenesis

authors： Arora S,Matta A,Shukla NK,Deo SV,Ralhan R

更新日期：2005-02-01 00:00:00

abstract：:Diet-derived butyrate, a histone deacetylase inhibitor (HDI), decreases proliferation and increases apoptosis in colorectal cancer (CRC) cells via epigenetic changes in gene expression. Other HDIs such as suberoylanilide hydroxamic acid (SAHA) and trichostatin A (TSA) have similar effects. This study examined the role...

journal_title：Molecular carcinogenesis

authors： Humphreys KJ,Cobiac L,Le Leu RK,Van der Hoek MB,Michael MZ

更新日期：2013-06-01 00:00:00

abstract：:Polymorphisms of the base excision repair gene APE1 may be associated with an increased risk for developing prostate cancer. In other cancer types, altered APE1 protein expression is a candidate prognostic marker. Using immunohistochemistry, we thus analyzed APE1 expression in 9763 prostate cancers in a tissue microar...

journal_title：Molecular carcinogenesis

authors： Juhnke M,Heumann A,Chirico V,Höflmayer D,Menz A,Hinsch A,Hube-Magg C,Kluth M,Lang DS,Möller-Koop C,Sauter G,Simon R,Beyer B,Pompe R,Thederan I,Schlomm T,Luebke AM

更新日期：2017-09-01 00:00:00

abstract：:The E5 open reading frame (ORF) from bovine papillomavirus type 1 (BPV 1) as well as the E5 ORFs from human papillomaviruses (HPV) type 6 and type 16 have been reported to transform immortalized rodent cells. In an analysis of murine and human tumors for the presence of putative papillomavirus-related sequences, we cl...

journal_title：Molecular carcinogenesis

authors： Kahn T,Friesl H,Copeland NG,Gilbert DJ,Jenkins NA,Gissmann L,Kramer J,zur Hausen H

更新日期：1992-01-01 00:00:00

abstract：:High levels of the cell growth inhibitor transforming growth factor-beta1 (TGF-beta1) are often found in a variety of human cancers. However, the physiological significance of this overexpression depends on the availability of the biologically active form of TGF-beta1 within the extracellular matrix of the tumor micro...

journal_title：Molecular carcinogenesis

authors： Guda K,Claffey KP,Dong M,Nambiar PR,Rosenberg DW

更新日期：2003-05-01 00:00:00