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© Thierry Blisnick & Philippe Bastin, Institut Pasteur
Bloodstream Trypanosoma brucei cell
Publication : Immunology letters

The cloned C-terminal region of a Trypanosoma cruzi P ribosomal protein harbors two antigenic determinants

Scientific Fields
Diseases
Organisms
Applications
Technique

Published in Immunology letters - 01 Mar 1990

Levin MJ, Rossi R, Levitus G, Mesri E, Bonnefoy S, Kerner N, Hontebeyrie-Joskowicz M

Link to Pubmed [PMID] – 1695612

Immunol. Lett. 1990 Mar-Apr;24(1):69-73

A DNA strategy was designed to characterize the antigenic site(s) within a lambda gt11 cloned 35-amino-acid antigenic peptide, identified with antibodies from patients with chronic Chagas’ heart disease (cChHD) and systemic lupus erythematosus (SLE) as the C-terminal portion of a Trypanosoma cruzi P ribosomal protein. The 198-bp cDNA insert was digested with AluI, resulting in two DNA segments that were recloned in lambda gt11. To identify specific antigenic determinants, the recombinant phage and the purified recombinant antigens were probed with sera from clinically characterized subjects. Chronic ChHD and SLE sera defined a linear epitope common to both diseases within the 15 C-terminal residues of the parasite P ribosomal protein. It is also shown that the cloned 35-amino-acid peptide contained an antigenic site unique to cChHD.

http://www.ncbi.nlm.nih.gov/pubmed/1695612