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. 1979 Jan;29(1):69–75. doi: 10.1128/jvi.29.1.69-75.1979

Relationship between T-antigen and tumor-specific transplantation antigen in simian virus 40-transformed cells.

C Chang, R G Martin, D M Livingston, S W Luborsky, C P Hu, P T Mora
PMCID: PMC353074  PMID: 219235

Abstract

The simian virus 40 (sv40) tumor antigen (T-antigen) and tumor-specific transplantation antigen (TSTA) have been partially purified and studied to clarify their relationship. The T-antigen and the TSTA were partially purified from nuclei of SV AL/N cells, and SV40-transformed mouse embryo fibroblast line, by precipitation with ammonium sulfate and chromatography on DEAE- and DNA-cellulose. The T-antigen was assayed by complement fixation, and the TSTA was assayed by its ability to immunize mice against SV40-containing ascites tumor cells. When T-antigen- and TSTA-containing preparations were sedimented through sucrose gradients, each antigen had a major peak of activity at a sedimentation coefficient of 6.7 and minor peaks in other regions. Antiserum against T-antigen (from tumor-bearing hamsters) immunoprecipitated the TSTA activity. A preparation of T-antigen from human SV80 cells, which exhibited only one protein band after sodium dodecylsulfate-polyacrylamide gel electrophoresis, had TSTA activity when as little as 0.6 microgram of protein per mouse was used for immunization. These experiments demonstrate that the T-antigen, the product of the SV40 early A gene is capable of inducing specific immunity against transplantation of SV40-transformed tumor cells in mice.

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Selected References

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