These tools will no longer be maintained as of December 31, 2024. Archived website can be found here. PubMed4Hh GitHub repository can be found here. Contact NLM Customer Service if you have questions.
4. Amplification of the dihydrofolate reductase gene is a mechanism of acquired resistance to methotrexate in patients with acute lymphoblastic leukemia and is correlated with p53 gene mutations. Göker E; Waltham M; Kheradpour A; Trippett T; Mazumdar M; Elisseyeff Y; Schnieders B; Steinherz P; Tan C; Berman E Blood; 1995 Jul; 86(2):677-84. PubMed ID: 7605998 [TBL] [Abstract][Full Text] [Related]
5. Defective transport as a mechanism of acquired resistance to methotrexate in patients with acute lymphocytic leukemia. Trippett T; Schlemmer S; Elisseyeff Y; Goker E; Wachter M; Steinherz P; Tan C; Berman E; Wright JE; Rosowsky A Blood; 1992 Sep; 80(5):1158-62. PubMed ID: 1381235 [TBL] [Abstract][Full Text] [Related]
6. Reduced folate carrier and dihydrofolate reductase expression in acute lymphocytic leukemia may predict outcome: a Children's Cancer Group Study. Levy AS; Sather HN; Steinherz PG; Sowers R; La M; Moscow JA; Gaynon PS; Uckun FM; Bertino JR; Gorlick R; J Pediatr Hematol Oncol; 2003 Sep; 25(9):688-95. PubMed ID: 12972803 [TBL] [Abstract][Full Text] [Related]
7. Dihydrofolate-reductase and thymidylate-synthase in childhood acute lymphoblastic leukemia. Volm M; Sauerbrey A; Zintl F Anticancer Res; 1994; 14(3B):1377-81. PubMed ID: 8067709 [TBL] [Abstract][Full Text] [Related]
8. Ex vivo resistance in childhood acute lymphoblastic leukemia: Correlations between BCRP, MRP1, MRP4 and MRP5 ABC transporter expression and intracellular methotrexate polyglutamate accumulation. Jaramillo AC; Cloos J; Lemos C; Stam RW; Kaspers GJL; Jansen G; Peters GJ Leuk Res; 2019 Apr; 79():45-51. PubMed ID: 30849662 [TBL] [Abstract][Full Text] [Related]
9. Defective transport is a common mechanism of acquired methotrexate resistance in acute lymphocytic leukemia and is associated with decreased reduced folate carrier expression. Gorlick R; Goker E; Trippett T; Steinherz P; Elisseyeff Y; Mazumdar M; Flintoff WF; Bertino JR Blood; 1997 Feb; 89(3):1013-8. PubMed ID: 9028333 [TBL] [Abstract][Full Text] [Related]
10. Mutations in the gene for human dihydrofolate reductase: an unlikely cause of clinical relapse in pediatric leukemia after therapy with methotrexate. Spencer HT; Sorrentino BP; Pui CH; Chunduru SK; Sleep SE; Blakley RL Leukemia; 1996 Mar; 10(3):439-46. PubMed ID: 8642859 [TBL] [Abstract][Full Text] [Related]
11. Determinants of the disparate antitumor activities of (6R)-5,10-dideaza-5,6,7,8-tetrahydrofolate and methotrexate toward human lymphoblastic leukemia cells, characterized by severely impaired antifolate membrane transport. Matherly LH; Angeles SM; McGuire JJ Biochem Pharmacol; 1993 Dec; 46(12):2185-95. PubMed ID: 7506026 [TBL] [Abstract][Full Text] [Related]
12. Basis for natural resistance to methotrexate in human acute non-lymphocytic leukemia. Lin JT; Tong WP; Trippett TM; Niedzwiecki D; Tao Y; Tan C; Steinherz P; Schweitzer BI; Bertino JR Leuk Res; 1991; 15(12):1191-6. PubMed ID: 1722550 [TBL] [Abstract][Full Text] [Related]
13. Differential methotrexate resistance in childhood T- versus common/preB-acute lymphoblastic leukemia can be measured by an in situ thymidylate synthase inhibition assay, but not by the MTT assay. Rots MG; Pieters R; Kaspers GJ; van Zantwijk CH; Noordhuis P; Mauritz R; Veerman AJ; Jansen G; Peters GJ Blood; 1999 Feb; 93(3):1067-74. PubMed ID: 9920857 [TBL] [Abstract][Full Text] [Related]
14. Association between polymorphisms of dihydrofolate reductase and gamma glutamyl hydrolase genes and toxicity of high dose methotrexate in children with acute lymphoblastic leukemia. Koomdee N; Hongeng S; Apibal S; Pakakasama S Asian Pac J Cancer Prev; 2012; 13(7):3461-4. PubMed ID: 22994778 [TBL] [Abstract][Full Text] [Related]
15. Enzyme studies of methotrexate-resistant human leukemic cell (K562) subclones. Koizumi S; Allegra CJ Leuk Res; 1992; 16(6-7):565-9. PubMed ID: 1378915 [TBL] [Abstract][Full Text] [Related]
16. Folate transport and the modulation of antifolate sensitivity in a methotrexate-resistant human breast cancer cell line. Dixon KH; Trepel JB; Eng SC; Cowan KH Cancer Commun; 1991; 3(12):357-65. PubMed ID: 16296001 [TBL] [Abstract][Full Text] [Related]
17. Mechanisms of resistance to methotrexate in childhood acute lymphoblastic leukemia: circumvention of thymidylate synthase inhibition. Weigand M; Frei E; Graf N; Buchholz B; Wolfrom C; Breuer A; Wiessler M J Cancer Res Clin Oncol; 1999; 125(8-9):513-9. PubMed ID: 10480345 [TBL] [Abstract][Full Text] [Related]
18. Ex vivo activity of methotrexate versus novel antifolate inhibitors of dihydrofolate reductase and thymidylate synthase against childhood leukemia cells. Mauritz R; Bekkenk MW; Rots MG; Pieters R; Mini E; van Zantwijk CH; Veerman AJ; Peters GJ; Jansen G Clin Cancer Res; 1998 Oct; 4(10):2399-410. PubMed ID: 9796971 [TBL] [Abstract][Full Text] [Related]