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2003 AUG 6 - (NewsRx.com & NewsRx.net) -- The immunodominant influenza matrix T cell epitope recognized in humans induced influenza protection in HLA-A2/K-b transgenic mice.
According to recent research from France, "The protective efficacy of the influenza matrix protein epitope 58-66 (called M1), recognized in the context of human HLA-A2 molecules. was evaluated in a HLA-A2/K-b transgenic mouse model of lethal influenza infection."
"Repeated subcutaneous immunizations with M1 increased the percentage of survival," reported Helene Plotnicky and collaborators at the Centre d'Immunologie Pierre Fabre. "This effect was mediated by T cells since protection was abolished following in vivo depletion of all T lymphocytes, CD8+, or CD4+ T cells."
The researchers found, "The survival correlated with the detection of memory CD8+ splenocytes able to proliferate in vitro upon stimulation with M1 and to bind M1-loaded HLA-A2 dimers, as well as with M1-specific T cells in the lungs, which were directly cytotoxic to influenza-infected cells following influenza challenge."
"These results demonstrated ...