Abstract:
:Messenger RNA differential display was used to study liver-gene expression in paired tumor and non-tumor tissues from hepatocellular carcinoma (HCC) patients. mRNA differential display and Northern-blot analyses showed that a 0.8-kb cDNA fragment was diminished or absent from the tumorous tissues of 7 HCC patients. The cDNA fragment was sequenced and found to have 98.7% nucleotide sequence homology with human glycine-N-methyltransferase cDNA (GNMT). In addition, there was no detectable level of GNMT expression in 4 human HCC cell lines, SK-Hep1, Hep 3B, HuH-7 and HA22T, examined by Northern-blot assay. A full-length GNMT cDNA clone-9-1-2 was obtained by screening a Taiwanese liver cDNA library. In comparison with the GNMT cDNA sequence reported elsewhere, clone 9-1-2 had 4 nucleotide differences resulting in 1 amino-acid change. Immunohistochemical staining with rabbit anti-recombinant GNMT serum showed that GNMT protein almost completely disappeared in liver-cancer cells, while it was abundant in the non-tumorous liver cells. Down-regulation of GNMT gene expression may be involved in the pathogenesis of liver cancer.
journal_name
Int J Cancerjournal_title
International journal of cancerauthors
Chen YM,Shiu JY,Tzeng SJ,Shih LS,Chen YJ,Lui WY,Chen PHdoi
10.1002/(sici)1097-0215(19980302)75:5<787::aid-ijcsubject
Has Abstractpub_date
1998-03-02 00:00:00pages
787-93issue
5eissn
0020-7136issn
1097-0215pii
10.1002/(SICI)1097-0215(19980302)75:5<787::AID-IJCjournal_volume
75pub_type
杂志文章abstract::Using a recently developed autochthonous mouse model of squamous cell carcinoma (SCC), a combination therapy targeting polyamine metabolism was evaluated. The therapy combined 2-difluoromethylornithine (DFMO), an inhibitor of ornithine decarboxylase (ODC), and MQT 1426, a polyamine transport inhibitor. In 1 trial last...
journal_title:International journal of cancer
pub_type: 杂志文章
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更新日期:2006-05-01 00:00:00
abstract::Dendritic cells (DCs) and natural killer (NK) cells are key players at the interface between innate resistance and acquired immunity. NK cells can induce DC maturation, a differentiation process whereby DCs respond to a environmental stimulus and acquire the ability of eliciting adaptive immunity. Conversely, maturing...
journal_title:International journal of cancer
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journal_title:International journal of cancer
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abstract::Histologic characteristics of bladder cancer in Boston, USA, Manchester, UK, and Nagoya, Japan, were evaluated. In each of these areas broadly-based series of cases were assembled during a collaborative case-control study. The present analysis was based on 589 cases in Boston, 484 cases in Manchester, and 241 cases in...
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abstract::Freshly isolated human peripheral blood monocytes from healthy volunteers are not cytotoxic to allogeneic A375 melanoma cells, but they were rendered tumoricidal by incubation in vitro with either liposomes containing 5 micrograms/mumol phospholipid of muramyl tripeptide phosphatidylethanolamine (liposome-MTP-PE; opti...
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abstract::IL-15 is an immunostimulatory cytokine with IL-2-like activities. To exploit the potential role of IL-15 in cancer immuno-/gene therapy, we engineered murine TS/A cells with different IL-15 cDNA constructs. Significant IL-15 secretion was achieved only by the use of a modified cDNA encoding for an IL-15 pre-protein be...
journal_title:International journal of cancer
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更新日期:1981-12-01 00:00:00
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更新日期:2017-02-01 00:00:00
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更新日期:2019-05-01 00:00:00
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更新日期:2015-06-15 00:00:00
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abstract::Tumorigenesis of head and neck squamous cell carcinomas (HNSCC) is associated with various genetic changes such as loss of heterozygosity (LOH) on human chromosome 18q21. This chromosomal region maps a gene cluster coding for a family of intracellular serine protease inhibitors (serpins), including SERPINB13. As SERPI...
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abstract::Chloroethylene oxide and 2-chloroacetaldehyde, two possibly carcinogenic metabolities of vinyl chloride in mammals, caused a dose-dependent induction of 8-azaguanine- and ouabain-resistant mutants in Chinese hamster V79 cells in vitro. Up to one-hundred-fold higher concentrations of 2-chloroethanol or monochloroacetic...
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abstract::Serum and tumor tissue from breast cancer patients were evaluated for the presence of alpha subunit of hCG, by means of the specific radioimmunoassay. Elevated serum levels occurred in 0/50 (0%) of normal female controls, 1/17 (6%) of patients with benign breast disease, 3/53 (6%) of patients with primary breast cance...
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