Peptide selection for human immunodeficiency virus type 1 CTL-based vaccine evaluation

Vaccine. 2006 Nov 17;24(47-48):6893-904. doi: 10.1016/j.vaccine.2006.06.009. Epub 2006 Jun 27.


Dozens of human immunodeficiency virus-type 1 (HIV-1) vaccine candidates specifically designed to elicit cytotoxic T-lymphocyte (CTL) responses have entered the pipeline of clinical trials. Evaluating the immunogenicity and potential efficacy of these HIV-1 vaccine candidates is challenging in the face of the extensive viral genetic diversity of circulating strains. Standardized peptide reagents to define the magnitude and potential breadth of the T-cell response, especially to circulating strains of HIV-1, are needed. For this purpose we developed a biometric approach based on T-cell recognition pattern for defining standardized reagents. Circulating strains in the Los Alamos database were evaluated and standardized algorithms to define all potential T-cell epitopes (PTEs) were generated. While many unique PTEs could be identified, a finite number based upon prevalence of circulating strains in the database, which we define as vaccine-important PTEs (VIPs), were used to select a common standardized panel of HIV-1 peptides for CTL-based vaccine evaluation. The usability of PTE peptide set was manifested by detection of Nef-specific CTL responses in HIV-1 subtype B infections.

Publication types

  • Research Support, N.I.H., Extramural
  • Research Support, Non-U.S. Gov't

MeSH terms

  • AIDS Vaccines / immunology*
  • Algorithms
  • Amino Acid Sequence
  • Databases, Genetic
  • Epitopes / immunology
  • HIV Antigens / immunology
  • HIV-1 / immunology*
  • Humans
  • Immunity, Cellular / immunology
  • Molecular Sequence Data
  • Peptides / immunology*
  • T-Lymphocytes, Cytotoxic / immunology*


  • AIDS Vaccines
  • Epitopes
  • HIV Antigens
  • Peptides