Codon modification of T cell receptors allows enhanced functional expression in transgenic human T cells.

Abstract

Expression of native transgenic T cell receptors in recipient human T cells is often insufficient to achieve highly reactive T cell bulks. Here we show that codon modification of an HPV16E7-specific T cell receptor (TCR), together with omission of mRNA instability motifs and (cryptic) splice sites, leads to a dramatic increase in the expression levels of the transgenic TCRs in human CD8+ T cells. The codon-modified TCRs have been tested in three different configurations in the retroviral vector LZRS: (1) TCRalpha-IRES-GFP in combination with TCRbeta-IRES-NGFR, (2) TCRalpha-IRES-TCRbeta, and (3) TCRalpha-2A-TCRbeta. T cells carrying the codon-modified TCRs are functionally active against target cells loaded with relevant peptide, model tumor cells expressing the specific epitope as well as cervical carcinoma cells. The significant improvements we report here in the functional expression of specific human TCRs will hopefully expedite clinical application of TCR transfer-based immunotherapy.

• Authors: Kirsten B J Scholten, Duco Kramer, Esther W M Kueter, Marcus Graf, Thomas Schoedl, Chris J L M Meijer, Marco W J Schreurs, Erik Hooijberg
• Journal: Clinical immunology (Orlando, Fla.) (Clin Immunol) Vol. 119 Issue 2 Pg. 135-45 (May 2006) ISSN: 1521-6616 [Print] United States
• PMID: 16458072 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't)

Chemical References

• Codon
• Receptors, Antigen, T-Cell

Topics

• CD8-Positive T-Lymphocytes (metabolism)
• Cell Line, Tumor
• Codon
• Gene Transfer Techniques
• HIV (genetics)
• Humans
• Mutation
• Organisms, Genetically Modified
• Papillomaviridae (genetics)
• Receptors, Antigen, T-Cell (genetics, metabolism)