CD4+ T cells and B cells are necessary for the transfer of protective immunity to Plasmodium chabaudi chabaudi.
It is shown here that B cells, in addition to CD4+ T cells, are necessary for the development of protective immunity to Plasmodium chabaudi chabaudi (P. chabaudi) in mice. Reconstitution of severe combined immunodeficient (SCID) mice with immune or normal CD4+ T cells protected the majority of mice against an otherwise lethal challenge but the mice were unable to clear their parasitemias. By contrast, transfer of the same T cell populations into athymic nu/nu mice enabled the recipients to control and clear their infections, immune CD4+ T cells being most effective. Furthermore, SCID mice given CD4+ T cells from immune and normal donors simultaneously with immune B cells also could eliminate their infection. Clearance of parasitemia correlated with the presence of malaria-specific antibodies in the serum. The role of B cells and CD4+ T cells in the protective immune response to P. chabaudi is discussed.
Max-Planck-Institute für Immunbiologie, Freiburg, FRG.
S J
SJ
Meding
J
J
Langhorne
D000818:Animals; D000913:Antibodies, Protozoan / Q000276:immunology; D001402:B-Lymphocytes / Q000276:immunology*; D015496:CD4-Positive T-Lymphocytes / Q000276:immunology*; D005260:Female; D007153:Immunologic Deficiency Syndromes / Q000276:immunology; D016219:Immunotherapy, Adoptive; D008297:Male; D051379:Mice; D008807:Mice, Inbred BALB C; D010961:Plasmodium / Q000276:immunology*; D006377:T-Lymphocytes, Helper-Inducer / Q000276:immunology*
D000913:Antibodies, Protozoan