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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Dairkee, S. H. Rudolph, A. R. Smith, H. S. Creasey, A. A. Dollbaum, C. Lin, L. Vitt, C. Hiller, A. J. |
| Description | Author Affiliation: Dollbaum C ( Peralta Cancer Research Institute, Oakland, CA 94609.); |
| Abstract | By using a unique short-term culture system capable of growing both normal and malignant breast epithelial tissue, human recombinant tumor necrosis factor (TNF) showed preferential cytotoxicity to malignant cells as compared to the corresponding nonmalignant cells. Most of the malignant specimens were sensitive to TNF with 13 of 18 specimens showing 90% inhibition of clonal growth (ID90) by less than 500 units of TNF per ml of culture fluid. In contrast, all 13 nonmalignant specimens tested clustered at the resistant end of the TNF response spectrum, with ID90 values being greater than 5000 units of TNF per ml of culture fluid. This differential sensitivity to TNF was seen in three cases in which malignant and nonmalignant breast epithelial tissues from the same patient were studied. To investigate the mechanism of resistance to TNF by normal cells, the presence of receptors for TNF was determined. Five of six cultures showed specific binding of 125I-labeled TNF and there was no relationship between the degree of resistance and the degree of specific binding. Simultaneous comparison of tumor responsiveness to doxorubicin and TNF revealed a positive correlation in ID90 values; these results may have important implications for the clinical use of TNF in cancer patients heavily pretreated with doxorubicin. |
| ISSN | 00278424 |
| e-ISSN | 10916490 |
| Journal | Proceedings of the National Academy of Sciences of the United States of America |
| Issue Number | 13 |
| Volume Number | 85 |
| Language | English |
| Publisher | National Academy of Sciences |
| Publisher Date | 1988-08-01 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Breast Neoplasms Pathology Doxorubicin Pharmacology Tumor Necrosis Factor-alpha Breast Drug Effects Cells, Cultured Drug Resistance Epithelium Organ Specificity Receptors, Cell Surface Metabolism Receptors, Tumor Necrosis Factor Recombinant Proteins Tumor Cells, Cultured Comparative Study Research Support, Non-U.S. Gov't Research Support, U.S. Gov't, P.H.S. Multidisciplinary |
| Content Type | Text |
| Resource Type | Article |
| Subject | Multidisciplinary |
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