Publications [#134151] of Mark W. Dewhirst

Papers Published

1. ML Hauck, MW Dewhirst, DD Bigner, MR Zalutsky, Local hyperthermia improves uptake of a chimeric monoclonal antibody in a subcutaneous xenograft model., Clinical cancer research : an official journal of the American Association for Cancer Research, UNITED STATES, vol. 3 no. 1 (January, 1997), pp. 63-70, ISSN 1078-0432
   (last updated on 2004/03/30)

   Abstract:
   This study was undertaken to determine the effect of local hyperthermia on the tissue distribution of a chimeric human/mouse IgG2 monoclonal antibody, 81C6, reactive with the extracellular matrix protein tenascin, which is expressed at high levels in gliomas, carcinomas of the breast and prostate, and other neoplasms. The D-54 MG s.c. glioma xenograft was treated with hyperthermia by immersion of the tumor-bearing leg in a circulating water bath. By 4 h after injection (immediately after heating), administration of chimeric 125I-labeled 81C6 (ch81C6) concomitantly with a 4-h local hyperthermia treatment at 41.8 degreesC resulted in an increase in tumor uptake of monoclonal antibody from a median of 12% of injected dose/g of tumor in normothermic mice to 42% of injected dose/g in mice receiving local hyperthermia. The increased level of uptake persisted in the heated tumors over the first 48 h and at 96 h. Additionally, heating increased the tumor:blood ratio of ch81C6 more than 7-fold at 4 h postinjection. The rate of uptake was also dramatically improved, with 60 and 90% of the maximum level of uptake achieved by 4 and 24 h, respectively, in the hyperthermia-treated mice, whereas the normothermic mice reached only 31 and 69% of their maximum uptake at those time points. In summary, local hyperthermia enhanced the absolute level and the rate of tumor uptake as well as tumor:normal tissue ratios for ch81C6. This approach may facilitate the clinical application of radionuclides with shorter half-lives, such as 211At, for the therapy of solid malignancies.

   Keywords:
   Animals • Antibodies, Monoclonal • Humans • Hyperthermia, Induced* • Mice • Mice, Inbred BALB C • Mice, Nude • Neoplasm Transplantation • Neoplasms, Experimental • Recombinant Fusion Proteins • Tenascin • Tissue Distribution • Transplantation, Heterologous • Tumor Cells, Cultured • immunology • metabolism • metabolism* • pharmacokinetics* • therapy