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| Content Provider | PubMed Central |
|---|---|
| Author | Johnson, P. J. Coussens, P. M. Shalloway, D. Danko, A. V. |
| Abstract | NIH 3T3 cells were transfected with plasmids containing Moloney murine leukemia virus long terminal repeats and either chicken c-src or v-src genes. In contrast with the effects observed after transfection with plasmids containing c-src and avian retrovirus or simian virus 40 promoter-enhancers (H. Hanafusa, H. Iba, T. Takeya, and F. R. Cross, p. 1-8, in G. F. Vande Woude, A. J. Levine, W. C. Topp, and J. D. Watson, ed., Cancer Cells, vol. 2, 1984; H. Iba, T. Takeya, F. R. Cross, T. Hanafusa, and H. Hanafusa, Proc. Natl. Acad. Sci. U.S.A. 81:4424-4428, 1984; R. C. Parker, R. Swanstrom, H. E. Varmus, and J. M. Bishop, p. 19-26, in G. F. Vande Woude et al., ed., Cancer Cells, vol. 2, 1984; R. C. Parker, H. E. Varmus, and J. M. Bishop, Cell 37:131-139, 1984; D. Shalloway, P. M. Coussens, and P. Yaciuk, p. 9-17, in G. F. Vande Woude et al., ed., Cancer Cells, vol. 2, 1984; D. Shalloway, P. M. Coussens, and P. Yaciuk, Proc. Natl. Acad. Sci. U.S.A. 81:7071-7075; and K. C. Wilhelmsen, W. G. Tarpley, and H. M. Temin, p. 303-308, in G. F. Vande Woude et al., ed., Cancer Cells, vol. 2, 1984), we found that both types of Moloney murine leukemia virus long terminal repeat-src expression plasmids induced focus formation, although c-src induced only 1% as many foci as v-src. The focus-selected c-src overexpressed cells had altered morphology and limited growth in soft agarose but were not tumorigenic in vivo. Cleveland digests, comparative in vitro kinase assays, secondary transfections, and immunoprecipitations indicated that focus formation was caused by rare transfection events that resulted in very high-level pp60c-src expression rather than by mutations of the transfected c-src genes. These results suggest that pp60v-src induced transformation is not a completely spurious activity which is unrelated to the function of pp60c-src but that it represents a perturbation of already existent molecular control processes involving pp60c-src. |
| Starting Page | 1073 |
| File Format | |
| ISSN | 10985549 |
| e-ISSN | 10985549 |
| Journal | Molecular and Cellular Biology |
| Issue Number | 5 |
| Volume Number | 5 |
| Language | English |
| Publisher Date | 1985-05-01 |
| Access Restriction | Open |
| Subject Keyword | Research in Higher Education |
| Content Type | Text |
| Resource Type | Article |
| Subject | Cell Biology Molecular Biology |
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