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DOI | 10.1038/ncomms15892 |
TCR microclusters form spatially segregated domains and sequentially assemble in calcium-dependent kinetic steps | |
Yi, Jason; Balagopalan, Lakshmi; Nguyen, Tiffany; McIntire, Katherine M.; Samelson, Lawrence E. | |
2019-01-17 | |
发表期刊 | NATURE COMMUNICATIONS
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ISSN | 2041-1723 |
出版年 | 2019 |
卷号 | 10 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Engagement of the T cell receptor (TCR) by stimulatory ligand results in the rapid formation of microclusters at sites of T cell activation. Whereas microclusters have been studied extensively using confocal microscopy, the spatial and kinetic relationships of their signaling components have not been well characterized due to limits in image resolution and acquisition speed. Here we show, using TIRF-SIM to examine the organization of microclusters at sub-diffraction resolution, the presence of two spatially distinct domains composed of ZAP70-bound TCR and LAT-associated signaling complex. Kinetic analysis of microcluster assembly reveal surprising delays between the stepwise recruitment of ZAP70 and signaling proteins to the TCR, as well as distinct patterns in their disassociation. These delays are regulated by intracellular calcium flux downstream of T cell activation. Our results reveal novel insights into the spatial and kinetic regulation of TCR microcluster formation and T cell activation. |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000455953900003 |
WOS关键词 | CELL ANTIGEN RECEPTOR ; IMMUNOLOGICAL SYNAPSE ; SIGNALING COMPLEXES ; T-CELLS ; 3-DIMENSIONAL LOCALIZATION ; FLUORESCENT PROTEINS ; MULTIPOINT BINDING ; ACTIVATION ; LAT ; MOLECULES |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/203356 |
专题 | 资源环境科学 |
作者单位 | NIH, Lab Cellular & Mol Biol, Ctr Canc Res, Bethesda, MD 20892 USA |
推荐引用方式 GB/T 7714 | Yi, Jason,Balagopalan, Lakshmi,Nguyen, Tiffany,et al. TCR microclusters form spatially segregated domains and sequentially assemble in calcium-dependent kinetic steps[J]. NATURE COMMUNICATIONS,2019,10. |
APA | Yi, Jason,Balagopalan, Lakshmi,Nguyen, Tiffany,McIntire, Katherine M.,&Samelson, Lawrence E..(2019).TCR microclusters form spatially segregated domains and sequentially assemble in calcium-dependent kinetic steps.NATURE COMMUNICATIONS,10. |
MLA | Yi, Jason,et al."TCR microclusters form spatially segregated domains and sequentially assemble in calcium-dependent kinetic steps".NATURE COMMUNICATIONS 10(2019). |
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