Cure of Experimental Human Malignant Mesothelioma in Athymic Mice by Diphtheria Toxin

A single ip or iv dose of 1–3 μg of diphtheria toxin consistently cured athyniic mice of an advanced stage experimental human malignant mesotheioma. All cancer cells were killed within 18 hours and the profuse ip ascites plus large solid tumor masses associated with this model of neoplastic disease...

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Bibliographic Details
Published in:JNCI : Journal of the National Cancer Institute 1989-04, Vol.81 (8), p.622-627
Main Authors: Raso, Vic, McGrath, John
Format: Article
Language:English
Subjects:
Animals
Ascites - therapy
Biological and medical sciences
Diphtheria Toxin - therapeutic use
Humans
Medical sciences
Mesothelioma - therapy
Mice
Mice, Nude
Neoplasm Transplantation
Other treatments
Remission Induction
Treatment. General aspects
Tumors
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Summary:A single ip or iv dose of 1–3 μg of diphtheria toxin consistently cured athyniic mice of an advanced stage experimental human malignant mesotheioma. All cancer cells were killed within 18 hours and the profuse ip ascites plus large solid tumor masses associated with this model of neoplastic disease were subsequently eliminated. Treated mice appeared normal in 3 days and lived for >300 days with no signs of recurrence, while control animals did not survive >32 days. The complete tumoricidal effect implies that toxin readily reached, entered, and preferentially killed each human cancer cell. This outcome exemplifies the true therapeutic potential of highly selective, site-directed toxins, and offers a frame of reference for judging the performance of current as well as prospective toxin-based agents. [J Natl Cancer Inst 81:622–627, 1989]
ISSN:0027-8874
1460-2105
DOI:10.1093/jnci/81.8.622