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    Potentiation of cell killing by inhibitors of poly(ADP-ribose) polymerase in four rodent cell lines exposed to N-methyl-N-nitrosourea or UV light.

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    Authors
    Durrant, L G
    Boyle, John M
    Affiliation
    Paterson Laboratories, Christie Hospital and Holt Radium Institute, Withington, Manchester, M20 9BX, UK
    Issue Date
    1982-02
    
    Metadata
    Show full item record
    Abstract
    The sensitivities (Do-values) of the cytotoxic effect of MNU on four rodent cell lines were: mouse L1210, 0.07 mM; rat Yoshida sarcoma, 0.52 mM; Chinese hamster V79A, 0.70 mM and the UV sensitive, X-ray sensitive V79/79, 0.35 mM. The abilities of maximum non-toxic doses of the poly-(ADP-ribose) polymerase inhibitors, 5-methyl nicotinamide (5MeN), 3-methoxybenzamide (3MBA) and caffeine to potentiate this cytotoxicity and that of UV light in V79A and V79/79 was measured. The degree of potentiation (ratio Do without inhibitor/Do with inhibitor) was both agent and cell line dependent. In general the lymphoid cell lines L1210 and YS showed greater potentiation, up to 4-fold, than did the fibroblast lines V79A and V79/79. The use of inhibitors in pairs suggested that 5MeN and 3MBA affect one process whereas caffeine affects additional processes. The data provide further support for a role for poly(ADP-ribose) in DNA repair, but indicate that metabolic factors may modify the effectiveness of individual inhibitors of poly(ADP-ribose) polymerase in different cell lines.
    Citation
    Potentiation of cell killing by inhibitors of poly(ADP-ribose) polymerase in four rodent cell lines exposed to N-methyl-N-nitrosourea or UV light. 1982, 38 (3):325-38 Chem Biol Interact
    Journal
    Chemico-Biological Interactions
    URI
    http://hdl.handle.net/10541/128229
    DOI
    10.1016/0009-2797(82)90062-X
    PubMed ID
    6277522
    Type
    Article
    Language
    en
    ISSN
    0009-2797
    ae974a485f413a2113503eed53cd6c53
    10.1016/0009-2797(82)90062-X
    Scopus Count
    Collections
    All Paterson Institute for Cancer Research

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