T cell response to N-formylated peptides in humans

Autor: Luca Battistini, Maria Paola Perrone, Rosa Sorrentino, C. Montesperelli, Paolo Riccio, Daniela Tramonti, Franco Giubilei, Giovanni Ristori, A. Perna, Maria Teresa Fiorillo, Giovanna Borsellino, Alberto Chersi, Stefania Cannoni, Marco Salvetti, Carla Buttinelli
Rok vydání: 2001
Předmět:
Zdroj: European journal of immunology. 31(9)
ISSN: 0014-2980
Popis: We present the first evidence of a T lymphocyte response to N-formylated peptides in humans. N-formylated peptide sequences from self (mitochondrial) and foreign (microbial) antigens were used to isolate antigen-specific T cell clones from healthy individuals, including a set of monozygotic twins. The observed response differed from that previously described in mouse (CD4(+) phenotype and MHC class II restriction in humans vs. CD8(+) phenotype and class I restriction in mice). These lymphocytes produce substantial amounts of IFN-gamma. They were isolated in only one of the monozygotic twins, which suggests that their expansion in the healthy immune repertoire is independent of the genetic background. Our result will help in assessing the relevance of N-formylated peptide-specific T cells in protection against infections within the human immune system.
Databáze: OpenAIRE