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| Content Provider | PubMed Central |
|---|---|
| Author | Dailey, M. O. Pillemer, E. Weissman, I. L. |
| Abstract | The effect of a cloned T-cell line on the in vivo growth of syngeneic lymphoma cells was studied. 1E4 is an H-2-restricted cytotoxic T-cell clone that efficiently kills Abelson virus-induced lymphoma target cells (L1-2) at low effector/target ratios, as measured by in vitro cytotoxicity assays. In addition, it is long lived in vitro in the absence of stimulation and survives for more than 1 wk in vivo in the absence of exogenous antigen or growth factors. Mice injected intraperitoneally with lethal doses of L1-2 and then treated with 1E4 survived longer than animals treated with saline or with a control T-cell clone. Multiple weekly injections of effector cells, or a single injection in animals given a low dose of tumor cells, resulted in 50-80% long-term survivors. The observation that intravenous injection of killer cells was less effective than intraperitoneal treatment, coupled with the previous demonstration of markedly abnormal circulatory patterns for T-cell clones, suggests that those animals succumbing to progressively growing neoplasm die because the effector cells are unable to home into peripheral sites of tumor deposition. Thus, although this cytotoxic T-cell clone does have useful in vivo activity, its function may be partially limited by a generalized defect in migration. |
| Starting Page | 5384 |
| File Format | |
| ISSN | 10916490 |
| e-ISSN | 10916490 |
| Journal | Proceedings of the National Academy of Sciences of the United States of America |
| Issue Number | 17 |
| Volume Number | 79 |
| Language | English |
| Publisher Date | 1982-09-01 |
| Access Restriction | Open |
| Subject Keyword | Research in Higher Education |
| Content Type | Text |
| Resource Type | Article |
| Subject | Multidisciplinary |
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