Activated mouse T cells downregulate, process and present their surface TCR to cognate anti‐idiotypic CD4+ T cells
- 23 February 2006
- journal article
- research article
- Published by Wiley in Immunology & Cell Biology
- Vol. 84 (2), 145-153
- https://doi.org/10.1111/j.1440-1711.2005.01405.x
Abstract
The ability of activated T cells to present foreign antigens through the MHC class II pathway has been shown in the case of human, rat and mouse T cells. In the present study, the ability of activated T cells to present their endogenous TCR in association with MHC class II molecules to CD4+ T cells was shown. Upon activation mouse T cells downregulate their surface TCR, which are degraded into peptides in endosomal/lysosomal compartments. The idiopeptides (peptides derived from the variable region of the TCR) are presented to cognate anti‐idiotypic CD4+ T cells, resulting in activation and proliferation of these cells. Interaction of idiotypic and anti‐idiotypic T cells brought about by presentation of TCR idiopeptide may have important implications for T‐cell vaccination and perpetuation of T‐cell memory not requiring persisting antigen or long‐lived memory cells.Keywords
Funding Information
- Department of Biotechnology, Government of India
- Indian Council of Medical Research, Government of India
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