Induction of malignant transformation in vitro and mammary tumors in rats by two new potent anthracycline antitumor antibiotics,morpholinodaunomycin and cyanomorpholinoadriamycin |
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| Authors: | J. Westendorf U. Mohr H. Marquardt |
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| Affiliation: | (1) Department of Toxicology, Hamburg University Medical School and Fraunhofer Institute of Toxicology and Aerosol Research Hamburg, Federal Republic of Germany;(2) Department of Toxicology, Hamburg University Medical School, Grindelallee 117, D-2000, 13 Hamburg, FRG |
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| Abstract: | The two new potent anthracycline antitumor antibiotics, morpholinodaunomycin and cyanomorpholinoadriamycin, are nonmutagenic or weakly mutagenic in Salmonella typhimurium or V79 Chinese hamster cells, but highly active inducing DNA repair in in cultured rat hepatocytes. Both agents were found to induce malignant transformation in vitro of C3H M2 mouse fibroblasts and mammary tumors in female Sprague-Dawley rats. The data indicate a) that these new anthracyclines, too, are highly oncogenic and b) in conjunction with previously published results, that the predictive value of in vitro short-term tests for in vivo carcinogenicity is dependent on the employment of a battery of such tests.Abbreviations ADM adriamycin - CNMoADM cyanomorpholinoadriamycin - DNM daunomycin - MNNG N-methyl-N -nitro-N-nitrosoguanidineDedicated to Dr. J.H. Weisburger on his 65th birthday |
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| Keywords: | anthracyclines malignant transformation mammary tumors |
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