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. 1979 Oct;76(10):5313–5316. doi: 10.1073/pnas.76.10.5313

Effective tumor immunization induced by cells of elevated membrane-lipid microviscosity.

M Shinitzky, Y Skornick, N Haran-Ghera
PMCID: PMC413132  PMID: 116228

Abstract

The immunogenicity of a series of mouse tumor lines propagated in vivo (T and B lymphomas and mammary adenocarcinoma) was tested after alteration of the cell membrane-lipid microviscosity. Tumor cells used for immunization were first treated to alter the lipid content, then irradiated and injected intraperitoneally into syngeneic mice. A second identical immunization was performed 14 days later. The degree of immunization in the treated mice was assessed by survival time after challenge with untreated viable tumor cells of the same origin as the immunizing cells. For all tumors tested, enrichment of the immunizing cells with cholesterol or cholesteryl hemisuccinate, which increased the membrane-lipid microviscosity significantly, afforded a marked increase in immunization, compared to that obtained with cells that were only irradiated. Furthermore, in over 90% of the mice that were pretreated with cholesteryl hemisuccinate-enriched cells, tumor growth after the challenge was not detectable. Because the lipid-modifying treatments of the immunizing cells involve no toxic substances, these results may provide the basis for a potent approach to immunotherapy of human cancer.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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