T-cell engineering by a chimeric T-cell receptor with antibody-type specificity for the HIV-1 gp120

Gene Ther. 2005 Feb;12(4):299-310. doi: 10.1038/sj.gt.3302413.


Immune-based approaches of cell therapy against viral pathogens such as the human immunodeficiency virus type 1 (HIV-1) could be of primary importance for the control of this viral infection. Here, we designed a chimeric cell surface receptor (105TCR) to provide primary human T-lymphocytes with antibody-type specificity for the HIV-1 envelope glycoprotein. This receptor includes the single chain Fv domain of the neutralizing anti-gp120 human monoclonal antibody F105, CD8alpha hinge and the transmembrane and the cytoplasmic domains of TCRzeta. Our results show that 105TCR is expressed at the cellular surface and is capable of recognizing the HIV-1 envelope glycoprotein inducing highly efficient effector T-cell responses, including extracellular signal-regulated kinase phosphorylation and cytokine secretion. Moreover, human primary CD8+ T-lymphocytes transduced by oncoretroviral and lentiviral vectors containing the 105TCR gene are able to mediate in vitro-specific cytolysis of envelope-expressing cells and HIV-1-infected CD4+ T-lymphocytes. These findings suggest that 105TCR is particularly suited for in vivo efficacy studies.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Antibody Specificity
  • CD8-Positive T-Lymphocytes / metabolism*
  • COS Cells
  • Cell Line
  • Chimera
  • Chlorocebus aethiops
  • Flow Cytometry
  • Gene Expression
  • Genetic Therapy / methods*
  • HIV Envelope Protein gp120 / immunology*
  • HIV Infections / immunology
  • HIV Infections / therapy*
  • HIV-1
  • Humans
  • Immunotherapy, Adoptive / methods*
  • Jurkat Cells
  • Receptors, Antigen, T-Cell / genetics*
  • Receptors, Antigen, T-Cell / immunology
  • Reverse Transcriptase Polymerase Chain Reaction


  • HIV Envelope Protein gp120
  • Receptors, Antigen, T-Cell