Abstract
Cyclosporin A (Cy A), a novel immunosuppressive agent with apparently selective inhibitory effects on T lymphocytes and little myelotoxicity, was tested for its effects on a variety of syngeneic animal tumours including sarcomas, carcinomas and a T-cell lymphoma. Cy A, given orally or parenterally in repeated doses, had no effect on the growth rates of any of the tumours tested, but a highly significant effect on metastasis was seen in many cases. All the sarcomas examined in both rats and mice, and also the lymphoma, showed a marked increase in their metastases, in some cases even when administration of Cy A was delayed until after excision of the "primary" tumour implants. In contrast no effect of Cy A on metastasis was observed in animals bearing poorly immunogenic mammary or squamous-cell carcinomas. The metastases developing in Cy A-treated animals, when transplanted into normal syngeneic animals, showed no evidence of enhanced metastatic potential compared with their "parent tumours.
Full text
PDF







Selected References
These references are in PubMed. This may not be the complete list of references from this article.
- Belnap L. P., Cleveland P. H., Colmerauer M. E., Barone R. M., Pilch Y. H. Immunogenicity of chemically induced murine colon cancers. Cancer Res. 1979 Apr;39(4):1174–1179. [PubMed] [Google Scholar]
- Calabresi P., Dexter D. L., Heppner G. H. Clinical and pharmacological implications of cancer cell differentiation and heterogeneity. Biochem Pharmacol. 1979 Jun 15;28(12):1933–1941. doi: 10.1016/0006-2952(79)90647-6. [DOI] [PubMed] [Google Scholar]
- Davey G. C., Currie G. A., Alexander P. Immunity as the predominant factor determining metastasis by murine lymphomas. Br J Cancer. 1979 Oct;40(4):590–596. doi: 10.1038/bjc.1979.224. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Denham S., Styles J. M., Barfoot R. K., Dean C. J. Reversible suppression of allo-antibody production by cyclosporin A. Int Arch Allergy Appl Immunol. 1980;62(4):453–458. doi: 10.1159/000232548. [DOI] [PubMed] [Google Scholar]
- Eccles S. A., Alexander P. Immunologically-mediated restraint of latent tumour metastases. Nature. 1975 Sep 4;257(5521):52–53. doi: 10.1038/257052a0. [DOI] [PubMed] [Google Scholar]
- Eccles S. A., Alexander P. Macrophage content of tumours in relation to metastatic spread and host immune reaction. Nature. 1974 Aug 23;250(5468):667–669. doi: 10.1038/250667a0. [DOI] [PubMed] [Google Scholar]
- Eccles S. A., Styles J. M., Hobbs S. M., Dean C. J. Metastasis in the nude rat associated with lack of immune response. Br J Cancer. 1979 Nov;40(5):802–805. doi: 10.1038/bjc.1979.264. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Poste G., Fidler I. J. The pathogenesis of cancer metastasis. Nature. 1980 Jan 10;283(5743):139–146. doi: 10.1038/283139a0. [DOI] [PubMed] [Google Scholar]
- Tarin D., Price J. E. Metastatic colonization potential of primary tumour cells in mice. Br J Cancer. 1979 Jun;39(6):740–754. doi: 10.1038/bjc.1979.128. [DOI] [PMC free article] [PubMed] [Google Scholar]
- White D. J., Calne R. Y., Plumb A. Mode of action of cyclosporin A: a new immunosuppressive agent. Transplant Proc. 1979 Mar;11(1):855–859. [PubMed] [Google Scholar]
- White D. J., Plumb A. M., Pawelec G., Brons G. Cyclosporin A: an immunosuppressive agent preferentially active against proliferating T cells. Transplantation. 1979 Jan;27(1):55–58. [PubMed] [Google Scholar]
