Enhancement and suppression of DTH reactivity to Rauscher murine leukaemia virus induced tumour cell lines.
Delayed-type hypersensitivity (DTH) to Rauscher murine leukaemia virus (R-MuLV) encoded or induced determinants was induced in mice by three syngeneic R-MuLV-induced tumour cell lines, i.e. a myeloid tumour, RMB-1, an erythroid tumour, RED-1, and a lymphoid tumour, RLD-1. DTH to subcutaneously (s.c.) administered RMB-1 cells appeared on day 4, with a maximum DTH response on day 6 or 7. The induction of DTH could be prevented by intravenous (i.v.) pre-immunisation with R-MuLV-induced tumour cells several days before the s.c. immunisation. The three R-MuLV-induced tumour cell lines showed cross-reactivity in the DTH assay, whereas no cross-reactivity was found with syngeneic WEHI-3 cells. This indicates that the three R-MuLV-induced tumour cell lines share a virally encoded or induced antigenic determinant, which activates T-cells. When the RMB-1 cells used for immunisation had been cultured in medium supplemented with interferon-gamma (IFN-gamma), the subsequent DTH response was increased. This coincided with an increased expression of the R-MuLV-specific antigenic determinants on RMB-1 cells as demonstrated by Scatchard analysis. Furthermore, IFN-gamma increased the MHC class I antigen expression on RMB-1 cells, whereas the class II antigen expression remained undetectable.
Knulst
A C
AC
Department of Cell Biology, Erasmus University, Rotterdam, The Netherlands.
Berends
D
D
Bazuin
C
C
van Rooij
H C
HC
de Both
N J
NJ
Benner
R
R
D000818:Animals; D000951:Antigens, Neoplasm / Q000276:immunology; D002461:Cell Line, Transformed; D003429:Cross Reactions; D000939:Epitopes / Q000276:immunology; D006649:Histocompatibility Antigens / Q000032:analysis; D006968:Hypersensitivity, Delayed; D007116:Immunization, Passive; D007371:Interferon-gamma / Q000494:pharmacology; D007942:Leukemia, Experimental / Q000276:immunology*; D051379:Mice; D011925:Rauscher Virus; D011994:Recombinant Proteins; D014407:Tumor Cells, Cultured / Q000187:drug effects / Q000276:immunology*
D000951:Antigens, Neoplasm; D000939:Epitopes; D006649:Histocompatibility Antigens; D011994:Recombinant Proteins; D007371:Interferon-gamma