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Dihydrofolate reductase inhibitor
Pronunciation
Definition 1
A substance that can build up in cancer cells and block them from using folate. Folate is a nutrient that rapidly dividing cells need to make DNA. Blocking folate use helps keep cancer cells from growing and may kill them. Some dihydrofolate reductase inhibitors are used to treat cancer. A dihydrofolate reductase inhibitor is a type of antifolate. Also called DHFR inhibitor. (NCI Dictionary)
Definition 2
Any substance that inhibits dihydrofolate reductase, an enzyme that catalyzes the conversion of dihydrofolate to tetrahydrofolate, an essential reaction for de novo glycine and purine synthesis. Inhibition of dihydrofolate reductase interferes with DNA and protein synthesis. (NCI Thesaurus)
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