Abstract
Signaling through the T cell antigen receptor leading to elimination (negative selection) or differentiation (positive selection) of developing thymocytes generates a self-tolerant T cell repertoire. Here we report that the serine-threonine kinase MINK selectively connects the T cell receptor to a signaling pathway that mediates negative but not positive selection. Analysis of this pathway suggested that the essential function of MINK in the elimination of self-reactive thymocytes may be associated with 'downstream' activation of Jun kinase and enhancement of expression of the proapoptotic molecule Bim.
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Acknowledgements
We thank J. Levecchio for cell sorting; K. Akashi for discussions and critical comments; and A. Angel for assistance with the manuscript and figures. Supported by National Research Service Award (T32 AI07386 to N.M.).
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Supplementary information
Supplementary Fig. 1
Sorting of thymic subpopulations for real time PCRs. (PDF 201 kb)
Supplementary Fig. 2
Additional analysis of MINK mice. (PDF 273 kb)
Supplementary Fig. 3
Additional analysis of HY MINK and HY control chimeric mice. (PDF 149 kb)
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McCarty, N., Paust, S., Ikizawa, K. et al. Signaling by the kinase MINK is essential in the negative selection of autoreactive thymocytes. Nat Immunol 6, 65–72 (2005). https://doi.org/10.1038/ni1145
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DOI: https://doi.org/10.1038/ni1145
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