p53-plus-ras-transformed rat embryo fibroblasts express tumor-specific transplantation antigen activity which is shared by independently transformed cells.

AUTOR(ES)

Frey, A B

RESUMO

p53-plus-ras-transformed rat cell lines express a tumor-specific transplantation antigen that is common to a number (85%) of independently derived p53-plus-ras-transformed cell lines. This has been shown by immunizing rats with irradiated p53-plus-ras-transformed cells and demonstrating protection of these animals by subsequent live-cell tumor challenge. Several c-myc-plus-ras-transformed cell lines (54% of the lines tested) and one adenovirus E1a-plus-ras-transformed cell line (9% of those tested) were shown to share a common tumor-specific transplantation antigen by their ability to immunize a rat against a p53-plus-ras cell line challenge. Several experimental approaches have been used to fractionate and identify the antigen common to these cell lines. The experimental results reported here make it clear that the p53 protein common to most of these transformed cell lines is not likely to be the tumor-specific transplantation antigen.

Documentos Relacionados

• Relationship between T-antigen and tumor-specific transplantation antigen in simian virus 40-transformed cells.
• Immunological evidence for the association of p53 with a heat shock protein, hsc70, in p53-plus-ras-transformed cell lines.
• Expression and thermal stability of simian virus 40 tumor-specific transplantation antigen and tumor antigen in wild type- and tsA mutant-transformed cells.
• A mouse tumor-specific transplantation antigen is a heat shock-related protein.
• Myeloma Proteins as Tumor-Specific Transplantation Antigens