Y. Gaumont

Publications107
h-index17
Citations1,108
Highly Influential Citations7
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Stereospecificity at carbon 6 of fomyltetrahydrofolate as a competitive inhibitor of transport and cytotoxicity of methotrexate in vitro.
Abstract The unnatural diastereoisomer of l -5-formyltetrahydrofolate was 20-fold less effective as a competitive inhibitor of [ 3 H] methotrexate influx than the natural diastereoisomer during… Expand
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Synthesis and antitumor activity of 10-alkyl-10-deazaminopterins. A convenient synthesis of 10-deazaminopterin.
Requirements for large-scale synthesis of the potent antitumor drug 10-deazaminopterin have led to development of a facile synthesis of this compound and its 10-alkyl analogues. The lithium… Expand
  • 41
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Syntheses and antifolate activity of 5-methyl-5-deaza analogues of aminopterin, methotrexate, folic acid, and N10-methylfolic acid.
Evidence indicating that modifications at the 5- and 10-positions of classical folic acid antimetabolites lead to compounds with favorable differential membrane transport in tumor vs. normal… Expand
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Further studies stereospecificity at carbon 6 for membrane transport of tetrahydrofolates. Diastereoisomers of 5-methyltetrahydrofolates as competitive inhibitors of transport of methotrexate in…
The unnatural d diastereoisomer at carbon 6 of 5-methyltetrahydrofolate was only slightly less effective than the natural 1 diastereoisomer as a competitive inhibitor of the carrier-mediated membrane… Expand
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Quantitation of folic acid enhancement of antifolate synergism.
Trimetrexate (TMTX), 5,10-dideazatetrahydrofolate (DDATHF), and 10-propargyl-5,8-dideazafolate (PDDF, CB3717) are antifolates whose primary intracellular targets are dihydrofolate reductase,… Expand
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10-Propargylaminopterin and alkyl homologues of methotrexate as inhibitors of folate metabolism.
Reported antifolate activity against leukemia L1210 by N-[14-[[(2-amino-4-hydroxy-6-quinazolinyl)methyl]-propargylamino]benzoyl]]-L-glu tamic acid through potent inhibition of thymidylate synthase… Expand
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Identification of a novel dimeric phosphoprotein (PP29/30) associated with signaling receptors in human T lymphocytes and natural killer cells
Two-dimensional gel electrophoresis of in vitro phosphorylated proteins coprecipitated by CD2 monoclonal antibody (mAb) from Brij58 lysates of resting human T lymphocytes and natural killer (NK)… Expand
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Polyglutamyl derivatives of folate as substrates and inhibitors of thymidylate synthetase.
Abstract (l)-Tetrahydropteroyltriglutamate and (l)-tetrahydropteroylhexaglutamate were prepared and tested as substrates for thymidylate synthetase (EC 2.1.1.6)… Expand
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Carrier-mediated transport of folate compounds in L1210 cells. Initial rate kinetics and extent of duality of entry routes for folic acid and diastereomers of 5-methyltetrahydrohomofolate in the…
Comparison of the kinetic parameters for influx of highly purified [3H]folic acid versus [3H]methotrexate in L1210 cells under anionic buffer conditions showed a marked discordancy. In addition, the… Expand
  • 37
A calorimetric study of the binding of 2'-deoxyuridine-5'-phosphate and 5-fluoro-2'-deoxyuridine-5'-phosphate to thymidylate synthetase.
Abstract The thermodynamic parameters, Δ H ′, Δ G ′, and Δ S ′, and the stoichiometry for the binding of the substrate 2′-deoxyuridine-5′-phosphate (dUMP) and the inhibitor… Expand
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