Non-canonicaly recruited TCRαβCD8αα IELs recognize microbial antigens.
Non-canonicaly recruited TCRαβCD8αα IELs recognize microbial antigens.
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DOI:
10.1038/s41598-018-29073-7
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发表时间:
2018-07-18
影响因子:
4.6
通讯作者:
Ignatowicz L
中科院分区:
文献类型:
--
作者:
Wojciech L;Szurek E;Kuczma M;Cebula A;Elhefnawy WR;Pietrzak M;Rempala G;Ignatowicz L
In the gut, various subsets of intraepithelial T cells (IELs) respond to self or non-self-antigens derived from the body, diet, commensal and pathogenic microbiota. Dominant subset of IELs in the small intestine are TCRαβCD8αα+ cells, which are derived from immature thymocytes that express self-reactive TCRs. Although most of TCRαβCD8αα+ IELs are thymus-derived, their repertoire adapts to microbial flora. Here, using high throughput TCR sequencing we examined how clonal diversity of TCRαβCD8αα+ IELs changes upon exposure to commensal-derived antigens. We found that fraction of CD8αα+ IELs and CD4+ T cells express identical αβTCRs and this overlap raised parallel to a surge in the diversity of microbial flora. We also found that an opportunistic pathogen (Staphylococcus aureus) isolated from mouse small intestine specifically activated CD8αα+ IELs and CD4+ derived T cell hybridomas suggesting that some of TCRαβCD8αα+ clones with microbial specificities have extrathymic origin. We also report that CD8ααCD4+ IELs and Foxp3CD4+ T cells from the small intestine shared many αβTCRs, regardless whether the later subset was isolated from Foxp3CNS1 sufficient or Foxp3CNS1 deficient mice that lacks peripherally-derived Tregs. Overall, our results imply that repertoire of TCRαβCD8αα+ in small intestine expends in situ in response to changes in microbial flora.
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影响因子:
64.5
作者:
Fan X;Rudensky AY
通讯作者:
Rudensky AY
影响因子:
30.5
作者:
通讯作者:
--
DOI:
10.4049/jimmunol.1601200
发表时间:
2017-01-01
期刊:
Journal of immunology (Baltimore, Md. : 1950)
影响因子:
--
作者:
Li KP;Fähnrich A;Roy E;Cuda CM;Grimes HL;Perlman HR;Kalies K;Hildeman DA
通讯作者:
Hildeman DA
影响因子:
5.4
作者:
Regnault, A;Levraud, JP;Kourilsky, P
通讯作者:
Kourilsky, P
影响因子:
24.8
作者:
Bilate, Angelina M.;Bousbaine, Djenet;Ploegh, Hidde L.
通讯作者:
Ploegh, Hidde L.