Failure of human cells transformed by simian virus 40 to form tumors in athymic nude mice.
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چکیده
منابع مشابه
Failure of human cells transformed by simian virus 40 to form tumors in athymic nude mice.
Four individual lines and one subline of human cells, permanently established in tissue culture after infection with simian virus 40, failed to form tumors when inoculated into athymic nude mice. Under identical conditions, three established human cell lines of neoplastic origin and a spontaneously established human lymphocyte line formed tumors. Nude mice that failed to grow tumors from inocu...
متن کاملTumorigenicity of simian virus 40-transformed human cells and mouse--human hybrids in nude mice.
Four different human cell lines transformed by simian virus 40 (SV40) were tested for their tumorigenicity in athymic nude mice. Two of these lines, W18Va2 and GM52VA, were found to be tumorigenic when inoculated at a concentration of 1 x 10(7) cells per mouse. The other two cell lines, LN-SV and GM54VA, were found to induce very small tumors only after the injection of approximately 1 x 10(8) ...
متن کاملSuperinfection of simian virus 40-transformed permissive cells with simian virus 40.
Evidence that the resistance of simian virus (SV40)-transformed permissive cells to superinfection with SV40 is due to lack of virus uptake is presented. When virus uptake is enhanced, the events of infection proceed as in normal permissive cells, resulting in production of infectious virus.
متن کاملInduction of simian virus 40 antigen in BSC1 transformed cells.
Heating to 45 C induced in virus-free clones of simian virus 40 (SV40) transformed BSC(1) cells the synthesis of SV40 viral antigen, as evidenced by immunofluorescence. Up to 3.8% of the cells exhibited viral antigen 72 hr after heating to 45 C for 30 min. Depletion of arginine from the medium of the heated cells enhanced and increased the percentage of cells synthesizing viral antigen to 11%. ...
متن کاملProperties of simian virus 40 rescued from cell lines transformed by ultraviolet-irradiated simian virus 40.
Simian virus 40 (SV40) strains have been rescued from various clonal lines of mouse kidney cells that had been transformed by ultraviolet (UV)-irradiated SV40. To learn whether some of the rescued SV40 strains were mutants, monkey kidney (CV-1) cells were infected with the rescued virus strains at 37 C and at 41 C. The SV40 strains studied included strains rescued from transformed cell lines cl...
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ژورنال
عنوان ژورنال: Proceedings of the National Academy of Sciences
سال: 1975
ISSN: 0027-8424,1091-6490
DOI: 10.1073/pnas.72.12.4971