Effect of macrophage infection by Leishmania on the proliferation of an antigen-specific T-cell line, TPB1, to a non-parasite antigen |
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Authors: | SIMON D. LYTTON EDNA MOZES CHARLES L. JAFFE |
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Affiliation: | Department of Membrane Research and Biophysics, MacArthur Center for Molecular Biology of Tropical Diseases;Department of Chemical Immunology, Weizmann Institute of Science, Rehovot, Israel |
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Abstract: | The ability of Leishmania mexicana amazonensis to inhibit antigen specific T-cell proliferation against a non-parasite polypeptide antigen, poly(LTyr, LGlu)-poly(DLAla)–poly(LLys), was examined. Infection of mouse peritoneal macrophages by promastigotes blocked the proliferation of the T-cell line, TPB1. This effect was correlated with the level of parasite infection, and the timing of macrophage infection and antigen addition. Peritoneal macrophages from both BALB/b and C57BL/6 mice showed reduced ability to serve as antigen presenting cells. |
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Keywords: | Leishmania mexicana amazonensis antigen specific T-cell line TPB1 (T,G)-A–L peritoneal macrophages |
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