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Sugar Analogs and 5-Fluorouridine in Combination Chemotherapy

  • Dietrich Keppler
  • Axel Holstege
  • Gisbert Weckbecker

Abstract

One of the possible approaches to tumor chemotherapy involves the elimination of the malignant cells by means of cytostatic or cytocidal drugs that should be as selective as possible for a given tumor. The comparatively high degree of selective toxicity induced by the antibacterial chemotherapeutic agents has not been achieved with the antitumor drugs since their selectivity must be based on minor metabolic differences between the normal and the malignant cells and tissues. Many of the effective drugs in cancer chemotherapy are antimetabolites that inhibit enzymes of essential metabolic pathways on the basis of a structural similarity with physiological intermediates, interfering thereby with cellular growth and proliferation. This may be exemplified by the blockade of thymidylate synthase (EC 2.1.1.45) by 5-f luorodeoxyuridine 5’-monophosphate, a metabolite of the pyrimidine analogs 5-fluorouracil, 5-f luorodeoxyuridine, or 5-fluorouridine (1). Inhibition of thymidylate synthase can lead to a depletion of thymine nucleotides and result in DNA synthesis inhibition due to substrate deficiency.

Keywords

Hepatoma Cell Pyrimidine Synthesis Morris Hepatoma Substrate Deficiency Uridine Kinase 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media New York 1987

Authors and Affiliations

  • Dietrich Keppler
    • 1
  • Axel Holstege
    • 1
  • Gisbert Weckbecker
    • 1
  1. 1.Biochemisches InstitutUniversity of Freiburg im BreisgauFreiburg i. Br.West Germany

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