1989
RNA polymerase II transcripts as targets for 5-fluorouridine cytotoxicity: antagonism of 5-fluorouridine actions by α-amanitin
Heimer R, Sartorelli A. RNA polymerase II transcripts as targets for 5-fluorouridine cytotoxicity: antagonism of 5-fluorouridine actions by α-amanitin. Cancer Chemotherapy And Pharmacology 1989, 24: 80-86. PMID: 2731315, DOI: 10.1007/bf00263125.Peer-Reviewed Original ResearchMeSH KeywordsAdenosineAmanitinsCell DivisionCell Membrane PermeabilityChromatography, AffinityElectrophoresis, Agar GelHumansLeukemia, Erythroblastic, AcuteLysophosphatidylcholinesNucleic Acid HybridizationRNA Polymerase IIRNA PrecursorsRNA, MessengerTranscription, GeneticTumor Cells, CulturedTumor Stem Cell AssayUridine
1985
Lack of enhanced cytotoxicity of cultured L1210 cells using folinic acid in combination with sequential methotrexate and fluorouracil
Danhauser L, Heimer R, Cadman E. Lack of enhanced cytotoxicity of cultured L1210 cells using folinic acid in combination with sequential methotrexate and fluorouracil. Cancer Chemotherapy And Pharmacology 1985, 15: 214-219. PMID: 3876889, DOI: 10.1007/bf00263888.Peer-Reviewed Original ResearchConceptsSequential methotrexateΜM methotrexateL1210 cellsSynergistic cell killingCultured L1210 cellsFolinic acidMTX pretreatmentMethotrexateL1210 cell growthAcid-precipitable materialHuman neoplasmsPresence of methotrexateFUraInhibitory effectElevated levelsEnhanced cytotoxicityCell killingCell fractionCytotoxicityDUrd incorporationInhibitionThymidylate synthetaseCell growthThymidylate synthesisCultured cells
1981
The influence of methotrexate pretreatment on 5-fluorouracil metabolism in L1210 cells.
Cadman E, Heimer R, Benz C. The influence of methotrexate pretreatment on 5-fluorouracil metabolism in L1210 cells. Journal Of Biological Chemistry 1981, 256: 1695-1704. PMID: 6161926, DOI: 10.1016/s0021-9258(19)69863-7.Peer-Reviewed Original ResearchConceptsMethotrexate pretreatmentConversion of FUraAddition of leucovorinSynergistic antitumor activityAbility of methotrexateTimes control valuesL1210 cellsEnhancement of intracellularSynergistic cell killingSoft agar cloningMethotrexate treatmentAntipurine effectMethotrexateConcentrations of methotrexateMaximal inhibitionControl valuesIntracellular methotrexateFUraInhibitory effectAntitumor activityExact mechanismIntracellular accumulationAgar cloningSimilar elevationsMicroM methotrexate