Construction and functional test of HLA-A*2402-peptide tetramer

Cell Mol Immunol. 2005 Apr;2(2):145-9.

Abstract

HLA-A*2402 is one of the most frequent HLA-A allele in Asian population. To construct HLA-A*2402-peptide tetramers, the transmembrane and intracellular segments of HLA-A*2402 cDNA were replaced with BSP sequence to form a fusion gene of sHLA-A*2402-BSP. The sHLA-A*2402-BSP fusion protein and beta2m were high-level expressed as insoluble aggregates in E.coli, and refolded to form an HLA-A*2402-peptide monomeric complex by dilution method in the presence of an antigenic peptide. The HLA-A*2402-peptide monomeric complex was biotinated and tetramized to prepare HLA-A*2402-peptide tetramer. Then using the HLA-A*2402-peptide tetramers to detect antigen-specific cytotoxic T lymphocyte (CTL) induced by artificial antigen presenting cell (aAPC) in vitro. The results showed that HLA-A*2402-peptide tetramer was prepared correctly, and functional in detecting antigen-specific CTL in vitro, HLA-A*2402-peptide monomeric and its multimeric complexes are expected to provide a powerful tool for studying mechanisms of immune-related diseases in Asian populations.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Alleles
  • Amino Acid Sequence
  • Antigen-Presenting Cells / immunology
  • Asia
  • Base Sequence
  • HLA-A Antigens / chemistry*
  • HLA-A Antigens / genetics
  • HLA-A Antigens / metabolism*
  • Humans
  • In Vitro Techniques
  • Multiprotein Complexes
  • Plasmids
  • Recombinant Fusion Proteins / chemistry
  • Recombinant Fusion Proteins / genetics
  • Recombinant Fusion Proteins / metabolism
  • T-Lymphocytes, Cytotoxic / immunology

Substances

  • HLA-A Antigens
  • Multiprotein Complexes
  • Recombinant Fusion Proteins