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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
5
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pubmed:dateCreated |
1998-3-19
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pubmed:abstractText |
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.
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pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:chemical |
http://linkedlifedata.com/resource/pubmed/chemical/GNMT protein, human,
http://linkedlifedata.com/resource/pubmed/chemical/Glycine N-Methyltransferase,
http://linkedlifedata.com/resource/pubmed/chemical/Methyltransferases,
http://linkedlifedata.com/resource/pubmed/chemical/RNA, Messenger,
http://linkedlifedata.com/resource/pubmed/chemical/RNA, Neoplasm
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pubmed:status |
MEDLINE
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pubmed:month |
Mar
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pubmed:issn |
0020-7136
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:day |
2
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pubmed:volume |
75
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
787-93
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pubmed:dateRevised |
2007-7-24
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pubmed:meshHeading |
pubmed-meshheading:9495250-Amino Acid Sequence,
pubmed-meshheading:9495250-Base Sequence,
pubmed-meshheading:9495250-Carcinoma, Hepatocellular,
pubmed-meshheading:9495250-Cloning, Molecular,
pubmed-meshheading:9495250-Gene Expression Regulation, Enzymologic,
pubmed-meshheading:9495250-Gene Expression Regulation, Neoplastic,
pubmed-meshheading:9495250-Glycine N-Methyltransferase,
pubmed-meshheading:9495250-Humans,
pubmed-meshheading:9495250-Immunohistochemistry,
pubmed-meshheading:9495250-Liver,
pubmed-meshheading:9495250-Liver Neoplasms,
pubmed-meshheading:9495250-Methyltransferases,
pubmed-meshheading:9495250-Molecular Sequence Data,
pubmed-meshheading:9495250-RNA, Messenger,
pubmed-meshheading:9495250-RNA, Neoplasm,
pubmed-meshheading:9495250-Tumor Cells, Cultured
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pubmed:year |
1998
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pubmed:articleTitle |
Characterization of glycine-N-methyltransferase-gene expression in human hepatocellular carcinoma.
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pubmed:affiliation |
Division of Preventative Medicine, Institute of Public Health, School of Medicine, National Yang-Ming University, Taipei, Taiwan, Republic of China. arthur@ym.edu.tw
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pubmed:publicationType |
Journal Article,
Research Support, Non-U.S. Gov't
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