deoxyguanosine-triphosphate has been researched along with tiazofurin* in 2 studies
1 review(s) available for deoxyguanosine-triphosphate and tiazofurin
Article | Year |
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Role of purine metabolism in regulation of signal transduction in human carcinoma cells.
Topics: Antimetabolites, Antineoplastic; Deoxyguanine Nucleotides; Guanosine Triphosphate; Humans; IMP Dehydrogenase; Inosine Monophosphate; Leukemia; Neoplasms; Purines; Ribavirin; Signal Transduction | 1998 |
1 other study(ies) available for deoxyguanosine-triphosphate and tiazofurin
Article | Year |
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Eicar (5-ethynyl-1-beta-D-ribofuranosylimidazole-4-carboxamide). A novel potent inhibitor of inosinate dehydrogenase activity and guanylate biosynthesis.
EICAR (5-ethynyl-1-beta-D-ribofuranosylimidazole-4-carboxamide) is a cytostatic agent that inhibits murine leukemia L1210 and human lymphocyte CEM cells at a 50% inhibitory concentration of 0.80-1.4 microM, respectively. EICAR causes a rapid and marked inhibition of inosinate (IMP) dehydrogenase (EC 1.1.1.205) activity in intact L1210 and CEM cells reflected by a concentration-dependent accumulation of IMP and depletion of GTP and dGTP levels. EICAR 5'-monophosphate is a potent inhibitor of purified L1210 cell IMP dehydrogenase (Ki/Km 0.06). Inhibition of IMP dehydrogenase by EICAR 5'-monophosphate is competitive with respect to IMP. L1210 cells that were selected for resistance to the cytostatic action of EICAR proved to be adenosine kinase-deficient. Also, studies with other mutant L1210 and CEM cell lines revealed that adenosine kinase, as well as an alternative pathway, may be responsible for the conversion of EICAR to its 5'-monophosphate. Purified 2'-deoxycytidine kinase, 2'-deoxyguanosine kinase, cytosolic 5'-nucleotidase, and nicotinamide dinucleotide (NAD) pyrophosphorylase do not seem to be markedly involved in the metabolism of EICAR. Topics: Adenosine; Animals; Antineoplastic Agents; Cell Division; Deoxyguanine Nucleotides; Guanine; Guanosine; Guanosine Triphosphate; Humans; IMP Dehydrogenase; Leukemia L1210; Lymphocytes; Mice; Mycophenolic Acid; Purine Nucleotides; Ribavirin; Ribonucleosides; Ribonucleotides; Tumor Cells, Cultured | 1993 |