Non-canonicaly recruited TCRαβCD8αα IELs recognize microbial antigens.

Non-canonicaly recruited TCRαβCD8αα IELs recognize microbial antigens.
复制标题

DOI:
10.1038/s41598-018-29073-7
复制
发表时间:
2018-07-18
期刊:
影响因子:
4.6
通讯作者:
Ignatowicz L
Ignatowicz L
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Wojciech L;Szurek E;Kuczma M;Cebula A;Elhefnawy WR;Pietrzak M;Rempala G;Ignatowicz L

文献摘要

参考文献

被引文献

相似文献

在肠道中,上皮内T细胞(IEL)的各种亚群对源自身体、饮食、肠道和病原性微生物群的自身或非自身抗原作出应答。小肠中IEL的主要亚群是TCRαβCD8αα+细胞,其来源于表达自身反应性TCR的未成熟胸腺细胞。尽管大多数TCRαβCD8αα+ IEL是胸腺来源的,但它们的库适应微生物植物群。在这里,我们使用高通量TCR测序检查了TCRαβ CD 8 αα+ IEL在暴露于共生来源抗原后的克隆多样性如何变化。我们发现CD8αα+ IEL和CD4+ T细胞表达相同的αβ TCR,这种重叠与微生物植物群多样性的激增平行增加。我们还发现从小鼠小肠分离的条件致病菌(金黄色葡萄球菌)特异性激活CD8αα+ IEL和CD4+衍生的T细胞杂交瘤,这表明一些具有微生物特异性的TCRαβCD8αα+克隆具有胸腺外起源。我们还报道了来自小肠的CD8ααCD4+ IEL和Foxp3CD4+ T细胞共享许多αβ TCR,无论后者的亚群是从Foxp3CNS1充足或Foxp3CNS1缺陷小鼠(缺乏外周来源的TCR)中分离的。总的来说,我们的研究结果表明,TCRαβCD8αα+在小肠中的库在原位扩展,以响应微生物植物群的变化。
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.
DOI: 10.1016/j.cell.2016.02.048
发表时间: 2016-03-10
期刊: Cell
影响因子: 64.5
作者:
Fan X;Rudensky AY
通讯作者: Rudensky AY
DOI: 10.1038/ni.2106
发表时间: 2011-10-02
期刊: Nature immunology
影响因子: 30.5
作者:
通讯作者: --
BIM的时间表达限制了激动剂选择的胸腺细胞的发展,并偏向其TCRβ曲目。
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
DOI: 10.1002/eji.1830260429
发表时间: 1996-04-01
影响因子: 5.4
作者:
Regnault, A;Levraud, JP;Kourilsky, P
通讯作者: Kourilsky, P
DOI: 10.1126/sciimmunol.aaf7471
发表时间: 2016-08-01
期刊: SCIENCE IMMUNOLOGY
影响因子: 24.8
作者:
Bilate, Angelina M.;Bousbaine, Djenet;Ploegh, Hidde L.
通讯作者: Ploegh, Hidde L.