Abstract:
:Changes in reduced folates upon exposure of Krebs ascites cells and L1210 murine leukemia cells to methotrexate (MTX) have been measured by stoichiometric entrapment of tissue methylenetetrahydrofolate into a stable ternary complex with thymidylate synthase and tritiated 5-fluoro-2'-deoxy-uridine-5'-monophosphate. Tetrahydrofolate and 5-methyltetrahydrofolate were determined after conversion to methylenetetrahydrofolate. In both tumor cell lines, treatment with methotrexate at levels which had little effect on methylenetetrahydrofolate and tetrahydrofolate concentrations resulted in nearly complete elimination of the methyltetrahydrofolate pool. Thus, an initial effect of methotrexate on folate metabolism appears to be on methyltetrahydrofolate.
journal_name
Cancer Lettjournal_title
Cancer lettersauthors
Kesavan V,Sur P,Doig MT,Scanlon KJ,Priest DGdoi
10.1016/0304-3835(86)90132-1subject
Has Abstractpub_date
1986-01-01 00:00:00pages
55-9issue
1eissn
0304-3835issn
1872-7980pii
0304-3835(86)90132-1journal_volume
30pub_type
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