Comparison of the C-mediating killing activity and C-activating properties of mouse monoclonal and polyclonal antibodies against Trypanosoma cruzi.
A Mouse polyclonal antiserum against Trypanosoma cruzi or its IgG and IgM fractions and five monoclonal antibodies (two IgM, two IgG(1) and one IgG(2a)) recognize and combine with membrane components of trypomastigote forms of the parasite as revealed by immunofluorescence. Although all these antibodies sensitize trypomastigotes and prepare them to activate the complement (C) system, as measured by consumption of total C, C4, B and C3, only the polyclonal antiserum or its IgG, IgM and Fabmu fragments were able to induce trypanosome lysis by the alternative C pathway.
Kipnis
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Departamento de Imunologia ICB Universidade de São Paulo Av. Prof. Lineu Prestes 2415 São Paulo CEP 05508-900 Brazil.
Tambourgi
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Alves
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Silva
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