Negative selection and peptide chemistry determine the size of naive foreign peptide-MHC class II-specific CD4+ T cell populations.
Negative selection and peptide chemistry determine the size of naive foreign peptide-MHC class II-specific CD4+ T cell populations.
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DOI:
10.4049/jimmunol.1002276
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发表时间:
2010-10-15
期刊:
影响因子:
--
通讯作者:
Jenkins MK
中科院分区:
文献类型:
--
作者:
Chu HH;Moon JJ;Kruse AC;Pepper M;Jenkins MK
Naïve CD4+ T cell populations that express TCRs specific for different foreign peptide-MHCII (pMHCII) ligands can vary in size over several orders of magnitude. This variation may explain why immune responses to some peptides are stronger than others. Here we used a sensitive pMHCII-tetramer based cell enrichment method to study the derivation of two naïve foreign pMHCII-specific naïve CD4+ T cell populations that differed in size by 8-fold in normal mice. Analysis of mice in which thymic negative selection was impaired revealed that the smaller population underwent more clonal deletion than the larger population. In addition, large naïve cell populations tended to recognize peptides with tryptophan residues as TCR contacts. Thus, the foreign pMHCII that tend to be recognized by large naïve populations induce minimal clonal deletion and contain certain amino acids with the capacity to interact favorably with TCRs.
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影响因子:
56.9
作者:
FungLeung, WP;Surh, CD;Karlsson, L
通讯作者:
Karlsson, L
影响因子:
64.5
作者:
Ignatowicz, L;Kappler, J;Marrack, P
通讯作者:
Marrack, P
影响因子:
30.5
作者:
通讯作者:
--
DOI:
10.4049/jimmunol.182.2.784
发表时间:
2009-01-15
期刊:
Journal of immunology (Baltimore, Md. : 1950)
影响因子:
--
作者:
Ahmed M;Lanzer KG;Yager EJ;Adams PS;Johnson LL;Blackman MA
通讯作者:
Blackman MA
DOI:
10.1084/jem.20081829
发表时间:
2009-02-16
期刊:
The Journal of experimental medicine
影响因子:
--
作者:
Haluszczak C;Akue AD;Hamilton SE;Johnson LD;Pujanauski L;Teodorovic L;Jameson SC;Kedl RM
通讯作者:
Kedl RM