Abstract
Two new species of antigens were detected in simian virus 40-transformed mouse cells, in addition to the large (94,000 daltons) and small (20,000 daltons) tumor antigens. These antigens were immunoprecipitated from cell extracts by using anti-T serum and not normal, nonimmune serum. One of these was a protein with a molecular weight of approximately 130,000 and was present in some but not all SV40-transformed mouse cells. The other, which we have named Tau antigen, has a molecular weight of 56,000 as estimated by electrophoresis through acrylamide gels and was found in all virus-transformed cells examined. The 13,000-daltons antigen contained about 15 methionine-tryptic peptides which were also present in the large SV40 tumor antigen as determined by ion-exchange chromatography. This strongly suggested that the protein was virus coded. The 56,000-dalton Tau antigen appeared to share only two methionine-tryptic peptides with the large species of SV40 tumor antigen, as determined by ion-exchange and paper chromatographies. Our results are compatible with a cellular origin for Tau antigen. However, our data do not exclude the possibility that this protein contains sequences specified by the virus DNA.
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Selected References
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- Ahmad-Zadeh C., Allet B., Greenblatt J., Weil R. Two forms of simian-virus-40-specific T-antigen in abortive and lytic infection. Proc Natl Acad Sci U S A. 1976 Apr;73(4):1097–1101. doi: 10.1073/pnas.73.4.1097. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Anderson J. L., Martin R. G., Chang C., Mora P. T., Livingston D. M. Nuclear preparations of SV40-transformed cells contain tumor-specific transplantation antigen activity. Virology. 1977 Jan;76(1):420–425. doi: 10.1016/0042-6822(77)90314-2. [DOI] [PubMed] [Google Scholar]
- Bonner W. M., Laskey R. A. A film detection method for tritium-labelled proteins and nucleic acids in polyacrylamide gels. Eur J Biochem. 1974 Jul 1;46(1):83–88. doi: 10.1111/j.1432-1033.1974.tb03599.x. [DOI] [PubMed] [Google Scholar]
- Brugge J. S., Butel J. S. Role of simian virus 40 gene A function in maintenance of transformation. J Virol. 1975 Mar;15(3):619–635. doi: 10.1128/jvi.15.3.619-635.1975. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Carroll R. B., Smith A. E. Monomer molecular weight of T antigen from simian virus 40-infected and transformed cells. Proc Natl Acad Sci U S A. 1976 Jul;73(7):2254–2258. doi: 10.1073/pnas.73.7.2254. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Chang C., Pancake S. J., Luborsky S. W., Mora P. T. Detergent solubilization and partial purification of tumor specific surface and transplantation antigens from SV40-virus-transformed mouse cells. Int J Cancer. 1977 Feb 15;19(2):258–266. doi: 10.1002/ijc.2910190216. [DOI] [PubMed] [Google Scholar]
- Crawford L. V., Cole C. N., Smith A. E., Paucha E., Tegtmeyer P., Rundell K., Berg P. Organization and expression of early genes of simian virus 40. Proc Natl Acad Sci U S A. 1978 Jan;75(1):117–121. doi: 10.1073/pnas.75.1.117. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Fiers W., Contreras R., Haegemann G., Rogiers R., Van de Voorde A., Van Heuverswyn H., Van Herreweghe J., Volckaert G., Ysebaert M. Complete nucleotide sequence of SV40 DNA. Nature. 1978 May 11;273(5658):113–120. doi: 10.1038/273113a0. [DOI] [PubMed] [Google Scholar]
- Griffin J. D., Light S., Livingston D. M. Measurements of the molecular size of the simian virus 40 large T antigen. J Virol. 1978 Jul;27(1):218–226. doi: 10.1128/jvi.27.1.218-226.1978. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Hutchinson M. A., Hunter T., Eckhart W. Characterization of T antigens in polyoma-infected and transformed cells. Cell. 1978 Sep;15(1):65–77. doi: 10.1016/0092-8674(78)90083-1. [DOI] [PubMed] [Google Scholar]
- Ito Y., Brocklehurst J. R., Dulbecco R. Virus-specific proteins in the plasma membrane of cells lytically infected or transformed by pol-oma virus. Proc Natl Acad Sci U S A. 1977 Oct;74(10):4666–4670. doi: 10.1073/pnas.74.10.4666. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Kress M., May E., Cassingena R., May P. Simian virus 40-transformed cells express new species of proteins precipitable by anti-simian virus 40 tumor serum. J Virol. 1979 Aug;31(2):472–483. doi: 10.1128/jvi.31.2.472-483.1979. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Kuster J. M., Mora P. T., Brown M., Khoury G. Immunologic selection against simian virus-40 transformed cells: concomitnat loss of viral antigens and early viral gene sequences. Proc Natl Acad Sci U S A. 1977 Nov;74(11):4796–4800. doi: 10.1073/pnas.74.11.4796. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Laemmli U. K. Cleavage of structural proteins during the assembly of the head of bacteriophage T4. Nature. 1970 Aug 15;227(5259):680–685. doi: 10.1038/227680a0. [DOI] [PubMed] [Google Scholar]
- Martin R. G., Chou J. Y. Simian virus 40 functions required for the establishment and maintenance of malignant transformation. J Virol. 1975 Mar;15(3):599–612. doi: 10.1128/jvi.15.3.599-612.1975. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Melero J. A., Stitt D. T., Mangel W. F., Carroll R. B. Identification of new polypeptide species (48-55K) immunoprecipitable by antiserum to purified large T antigen and present in SV40-infected and -transformed cells. Virology. 1979 Mar;93(2):466–480. doi: 10.1016/0042-6822(79)90250-2. [DOI] [PubMed] [Google Scholar]
- Mora P. T., Chang C., Couvillion L., Kuster J. M., McFarland V. W. Immunological selection of tumour cells which have lost SV40 antigen expression. Nature. 1977 Sep 1;269(5623):36–40. doi: 10.1038/269036a0. [DOI] [PubMed] [Google Scholar]
- Osborn M., Weber K. Simian virus 40 gene A function and maintenance of transformation. J Virol. 1975 Mar;15(3):636–644. doi: 10.1128/jvi.15.3.636-644.1975. [DOI] [PMC free article] [PubMed] [Google Scholar]
- POPE J. H., ROWE W. P. DETECTION OF SPECIFIC ANTIGEN IN SV40-TRANSFORMED CELLS BY IMMUNOFLUORESCENCE. J Exp Med. 1964 Aug 1;120:121–128. doi: 10.1084/jem.120.2.121. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Paucha E., Mellor A., Harvey R., Smith A. E., Hewick R. M., Waterfield M. D. Large and small tumor antigens from simian virus 40 have identical amino termini mapping at 0.65 map units. Proc Natl Acad Sci U S A. 1978 May;75(5):2165–2169. doi: 10.1073/pnas.75.5.2165. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Prives C., Gilboa E., Revel M., Winocour E. Cell-free translation of simian virus 40 early messenger RNA coding for viral T-antigen. Proc Natl Acad Sci U S A. 1977 Feb;74(2):457–461. doi: 10.1073/pnas.74.2.457. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Reddy V. B., Thimmappaya B., Dhar R., Subramanian K. N., Zain B. S., Pan J., Ghosh P. K., Celma M. L., Weissman S. M. The genome of simian virus 40. Science. 1978 May 5;200(4341):494–502. doi: 10.1126/science.205947. [DOI] [PubMed] [Google Scholar]
- Simmons D. T., Chang C., Martin M. A. Multiple forms of polyoma virus tumor antigens from infected and transformed cells. J Virol. 1979 Mar;29(3):881–887. doi: 10.1128/jvi.29.3.881-887.1979. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Simmons D. T., Martin M. A. Common methionine-tryptic peptides near the amino-terminal end of primate papovavirus tumor antigens. Proc Natl Acad Sci U S A. 1978 Mar;75(3):1131–1135. doi: 10.1073/pnas.75.3.1131. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Simmons D. T., Takemoto K. K., Martin M. A. Relationship between the methionine tryptic peptides of simian virus 40 and BK virus tumor antigens. J Virol. 1977 Oct;24(1):319–325. doi: 10.1128/jvi.24.1.319-325.1977. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Smart J. E., Ito Y. Three species of polyoma virus tumor antigens share common peptides probably near the amino termini of the proteins. Cell. 1978 Dec;15(4):1427–1437. doi: 10.1016/0092-8674(78)90066-1. [DOI] [PubMed] [Google Scholar]
- Smith R. W., Mora P. T. Cytolytic microassays and studies of SV40 tumor-specific transplantation antigen. Virology. 1972 Oct;50(1):233–246. doi: 10.1016/0042-6822(72)90363-7. [DOI] [PubMed] [Google Scholar]
- Tegtmeyer P. Function of simian virus 40 gene A in transforming infection. J Virol. 1975 Mar;15(3):613–618. doi: 10.1128/jvi.15.3.613-618.1975. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Tegtmeyer P., Rundell K., Collins J. K. Modification of simian virus 40 protein A. J Virol. 1977 Feb;21(2):647–657. doi: 10.1128/jvi.21.2.647-657.1977. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Tegtmeyer P., Schwartz M., Collins J. K., Rundell K. Regulation of tumor antigen synthesis by simain virus 40 gene A. J Virol. 1975 Jul;16(1):168–178. doi: 10.1128/jvi.16.1.168-178.1975. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Tegtmeyer P. Simian virus 40 deoxyribonucleic acid synthesis: the viral replicon. J Virol. 1972 Oct;10(4):591–598. doi: 10.1128/jvi.10.4.591-598.1972. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Winterbourne D. J., Mora P. T. Altered metabolism of heparan sulfate in simian virus 40 transformed cloned mouse cells. J Biol Chem. 1978 Jul 25;253(14):5109–5120. [PubMed] [Google Scholar]