title: Abelson antigen is expressed on hematopoietic spleen colony-forming cells from mice carrying the Av-2S virus sensitivity gene.
abstract: Abelson antigen is a cell-surface determinant specifically induced by the Abelson murine leukemia virus (A-MuLV); this antigen is also expressed on uninfected bone marrow of BALB/c mice. Antisera that contained antibody to Abelson antigen were cytotoxic for the spleen colony-forming cells (CFU-S) of adult bone marrow from BALB/c mice. Absorption tests with appropriate tissues and direct cytotoxic tests with bone marrow CFU-S from several mouse strains confirmed that the sensitivity of BALB/c CFU-S to lysis by anti-Abelson-antigen antisera was due to expression of Abelson antigen. Spleen or bone marrow from BALB/c mice undergoing hematopoietic regeneration amplified Abelson antigen expression, although no expression of Abelson antigen was observed on regenerating C57BL/B6 bone marrow or spleen. The presence of Abelson antigen on bone marrow cells of seven recombinant inbred strains coincided with the inheritance of sensitivity alleles at the Av-2 locus, a gene that determines susceptibility to A-MuLV lymphoma induction. These results indicate that expression of Ableson antigen may have a physiologic function in hematopoietic differentiation and a pathologic role in A-MuLV lymphomagenesis.
mesh_terms: D000011:Abelson murine leukemia virus / Q000276:immunology*; D000818:Animals; D000954:Antigens, Surface; D000956:Antigens, Viral; D001853:Bone Marrow / Q000276:immunology; D002460:Cell Line; D003114:Colony-Forming Units Assay; D003433:Crosses, Genetic; D005260:Female; D006410:Hematopoiesis; D009052:Leukemia Virus, Murine / Q000276:immunology*; D008297:Male; D051379:Mice; D008807:Mice, Inbred BALB C; D008815:Mice, Inbred Strains; D011995:Recombination, Genetic; D013045:Species Specificity
chemical_list: D000954:Antigens, Surface; D000956:Antigens, Viral