Detection of low avidity desmoglein 3-reactive T cells in pemphigus vulgaris using HLA-DRβ10402 tetramers
- 作者：Christian Veldman ; Rü ; diger Eming ; Sonja Wolff-Franke ; Grete Sonderstrup ; William W. Kwok ; Michael Hertl
- 关键词：Human ; T cell ; Autoimmunity ; Tetramer ; Skin ; Epitope ; HLA class II
- 刊名：Clinical Immunology
- 出版年：2007
- 期刊代码：95_15216616
- 类别：imm
- 出版时间：March 2007
- 卷：122
- 期：3
- 页码：330-337
- 文件大小：605 K
摘要
In the present study, we developed a HLA class II tetramer-based detection system utilizing DRB10402 tetramers loaded with recently identified immunodominant peptides of desmoglein 3 (Dsg3), the major autoantigen of pemphigus vulgaris (PV). Initial experiments demonstrated staining of a Dsg3-reactive T cell hybridoma which was derived from HLA-DR0402-transgenic mice with loaded PE-labeled DRβ10402 tetramers. However, staining of autoreactive T cell clones (TCC) derived from PV patients resulted only in positive staining by addition of exogenous peptides to the staining reactions. There was a dose-dependent specific binding of TCC to the tetramers with the agonistic Dsg3 peptide which was not altered by exogenous unrelated Dsg3 peptide. Noteworthy, the TCC did not stain with HLA-DR4 tetramers complexed with unrelated Dsg3 peptides. The findings of this study suggest that HLA class II tetramers may provide a highly specific approach to monitor ex vivo the T cellular autoimmune response against Dsg3 in patients with PV.