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© Charles DAUGUET, Institut Pasteur
HIV particles
Publication : Current opinion in virology

TCR clonotypes: molecular determinants of T-cell efficacy against HIV

Scientific Fields
Diseases
Organisms
Applications
Technique

Published in Current opinion in virology - 11 Feb 2016

Lissina A, Chakrabarti LA, Takiguchi M, Appay V

Link to Pubmed [PMID] – 26874617

Curr Opin Virol 2016 Feb;16:77-85

Because of the enormous complexity and breadth of the overall HIV-specific CD8(+) T-cell response, invaluable information regarding important aspects of T-cell efficacy against HIV can be sourced from studies performed on individual clonotypes. Data gathered from ex vivo and in vitro analyses of T-cell responses and viral evolution bring us one step closer towards deciphering the correlates of protection against HIV. HIV-responsive CD8(+) T-cell populations are characterized by specific clonotypic immunodominance patterns and public TCRs. The TCR endows T-cells with two key features, important for the effective control of HIV: avidity and crossreactivity. While TCR avidity is a major determinant of CD8(+) T-cell functional efficacy against the virus, crossreactivity towards wildtype and mutant viral epitopes is crucial for adaptation to HIV evolution. The properties of CD4(+) T-cell responses in HIV controllers appear also to be shaped by high avidity public TCR clonotypes. The molecular nature of the TCR, together with the clonotypic composition of the HIV-specific T-cell response, emerge as major determinants of anti-viral efficacy.

http://www.ncbi.nlm.nih.gov/pubmed/26874617