Biomaterial Database

Analysis of ODC and c-myc gene expression in hepatocellular carcinoma by in situ hybridization and immunohistochemistry. 1993

F Y Gan, and M S Gesell, and M Alousi, and G D Luk

Dept. of Veterans Affairs Medical Center, Dallas, TX 75216.

We quantitated mRNA and protein for ornithine decarboxylase (ODC) and c-myc in formalin-fixed liver sections from 25 specimens of hepatocellular carcinoma (HCC) and seven normal livers by a non-radiolabeled in situ hybridization technique and immunohistochemistry. This non-radioactive in situ hybridization technique was highly specific, with virtually no background, and permitted quantitative analysis based on optical density. Reaction products were quantitated with computer-assisted microdensitometry. Samples were classified as normal, adjacent uninvolved, cirrhosis, well-differentiated HCC, and poorly-differentiated HCC. There was a progressive increase in all four parameters measured, ODC mRNA and protein, and c-myc mRNA and protein, from normal, to adjacent uninvolved liver, to cirrhosis, to well-differentiated HCC, to poorly-differentiated HCC. The sole exception was that ODC mRNA was lowest in cirrhosis. The patterns of ODC and c-myc gene expression are similar in HCC. The quantitative detection of ODC mRNA, c-myc mRNA, and their protein products in hepatocellular carcinoma and cirrhosis by in situ hybridization and immunohistochemical techniques may have a potential role in the study of hepatocarcinogenesis and in the diagnosis of hepatocellular carcinoma.

UI	MeSH Term	Description	Entries
D007150	Immunohistochemistry	Histochemical localization of immunoreactive substances using labeled antibodies as reagents.	Immunocytochemistry,Immunogold Techniques,Immunogold-Silver Techniques,Immunohistocytochemistry,Immunolabeling Techniques,Immunogold Technics,Immunogold-Silver Technics,Immunolabeling Technics,Immunogold Silver Technics,Immunogold Silver Techniques,Immunogold Technic,Immunogold Technique,Immunogold-Silver Technic,Immunogold-Silver Technique,Immunolabeling Technic,Immunolabeling Technique,Technic, Immunogold,Technic, Immunogold-Silver,Technic, Immunolabeling,Technics, Immunogold,Technics, Immunogold-Silver,Technics, Immunolabeling,Technique, Immunogold,Technique, Immunogold-Silver,Technique, Immunolabeling,Techniques, Immunogold,Techniques, Immunogold-Silver,Techniques, Immunolabeling
D008113	Liver Neoplasms	Tumors or cancer of the LIVER.	Cancer of Liver,Hepatic Cancer,Liver Cancer,Cancer of the Liver,Cancer, Hepatocellular,Hepatic Neoplasms,Hepatocellular Cancer,Neoplasms, Hepatic,Neoplasms, Liver,Cancer, Hepatic,Cancer, Liver,Cancers, Hepatic,Cancers, Hepatocellular,Cancers, Liver,Hepatic Cancers,Hepatic Neoplasm,Hepatocellular Cancers,Liver Cancers,Liver Neoplasm,Neoplasm, Hepatic,Neoplasm, Liver
D009955	Ornithine Decarboxylase	A pyridoxal-phosphate protein, believed to be the rate-limiting compound in the biosynthesis of polyamines. It catalyzes the decarboxylation of ornithine to form putrescine, which is then linked to a propylamine moiety of decarboxylated S-adenosylmethionine to form spermidine.	Ornithine Carboxy-lyase,Carboxy-lyase, Ornithine,Decarboxylase, Ornithine,Ornithine Carboxy lyase
D006528	Carcinoma, Hepatocellular	A primary malignant neoplasm of epithelial liver cells. It ranges from a well-differentiated tumor with EPITHELIAL CELLS indistinguishable from normal HEPATOCYTES to a poorly differentiated neoplasm. The cells may be uniform or markedly pleomorphic, or form GIANT CELLS. Several classification schemes have been suggested.	Hepatocellular Carcinoma,Hepatoma,Liver Cancer, Adult,Liver Cell Carcinoma,Liver Cell Carcinoma, Adult,Adult Liver Cancer,Adult Liver Cancers,Cancer, Adult Liver,Cancers, Adult Liver,Carcinoma, Liver Cell,Carcinomas, Hepatocellular,Carcinomas, Liver Cell,Cell Carcinoma, Liver,Cell Carcinomas, Liver,Hepatocellular Carcinomas,Hepatomas,Liver Cancers, Adult,Liver Cell Carcinomas
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D012313	RNA	A polynucleotide consisting essentially of chains with a repeating backbone of phosphate and ribose units to which nitrogenous bases are attached. RNA is unique among biological macromolecules in that it can encode genetic information, serve as an abundant structural component of cells, and also possesses catalytic activity. (Rieger et al., Glossary of Genetics: Classical and Molecular, 5th ed)	RNA, Non-Polyadenylated,Ribonucleic Acid,Gene Products, RNA,Non-Polyadenylated RNA,Acid, Ribonucleic,Non Polyadenylated RNA,RNA Gene Products,RNA, Non Polyadenylated
D016271	Proto-Oncogene Proteins c-myc	Basic helix-loop-helix transcription factors encoded by the c-myc genes. They are normally involved in nucleic acid metabolism and in mediating the cellular response to growth factors. Elevated and deregulated (constitutive) expression of c-myc proteins can cause tumorigenesis.	L-myc Proteins,N-myc Proteins,c-myc Proteins,myc Proto-Oncogene Proteins,p62(c-myc),Proto-Oncogene Products c-myc,Proto-Oncogene Proteins myc,myc Proto-Oncogene Product p62,p62 c-myc,L myc Proteins,N myc Proteins,Proteins myc, Proto-Oncogene,Proto Oncogene Products c myc,Proto Oncogene Proteins c myc,Proto Oncogene Proteins myc,Proto-Oncogene Proteins, myc,c myc Proteins,myc Proto Oncogene Product p62,myc Proto Oncogene Proteins,myc, Proto-Oncogene Proteins,p62 c myc
D017403	In Situ Hybridization	A technique that localizes specific nucleic acid sequences within intact chromosomes, eukaryotic cells, or bacterial cells through the use of specific nucleic acid-labeled probes.	Hybridization in Situ,Hybridization, In Situ,Hybridizations, In Situ,In Situ Hybridizations