Reconstitution of immune cell interactions in free-standing membranes.

Reconstitution of immune cell interactions in free-standing membranes.
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独立膜中免疫细胞相互作用的重构。

DOI:
10.1242/jcs.219709
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发表时间:
2018-10-02
影响因子:
4
通讯作者:
Sezgin E
Sezgin E
中科院分区:
生物学2区
文献类型:
--
作者:
Jenkins E;Santos AM;O'Brien-Ball C;Felce JH;Wilcock MJ;Hatherley D;Dustin ML;Davis SJ;Eggeling C;Sezgin E

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在免疫细胞和它们的靶之间形成的接触处的信号蛋白的时空调节决定了免疫应答如何以及何时开始开始和结束。因此,免疫反应的治疗控制依赖于对这些界面上发生的分子过程的彻底阐明。然而,每个组件的形成和调节的接触的贡献的详细调查受到阻碍的细胞组成和架构的复杂性。此外,这些相互作用的瞬时性质产生了额外的挑战,特别是在使用先进的成像技术时。规避这些问题的一种方法是建立忠实地模拟免疫细胞相互作用的体外系统,但允许根据需要“拨入”复杂性。在这里,我们提出了一个体外系统,利用合成囊泡,模仿免疫细胞表面的重要方面。使用这个系统,我们开始探索信号分子(受体,激酶和磷酸酶)的空间分布,以及在信号启动过程中如何变化。本文提出的GUV/cell系统具有广泛的应用前景。摘要:免疫细胞-细胞相互作用在独立的囊泡中重建,允许研究免疫突触形成的时空方面。
The spatiotemporal regulation of signalling proteins at the contacts formed between immune cells and their targets determines how and when immune responses begin and end. Therapeutic control of immune responses therefore relies on thorough elucidation of the molecular processes occurring at these interfaces. However, the detailed investigation of each component's contribution to the formation and regulation of the contact is hampered by the complexities of cell composition and architecture. Moreover, the transient nature of these interactions creates additional challenges, especially in the use of advanced imaging technology. One approach that circumvents these problems is to establish in vitro systems that faithfully mimic immune cell interactions, but allow complexity to be ‘dialled-in’ as needed. Here, we present an in vitro system that makes use of synthetic vesicles that mimic important aspects of immune cell surfaces. Using this system, we began to explore the spatial distribution of signalling molecules (receptors, kinases and phosphatases) and how this changes during the initiation of signalling. The GUV/cell system presented here is expected to be widely applicable. Summary: Immune cell–cell interactions are reconstituted in free-standing vesicles, allowing the spatiotemporal aspects of immune synapse formation to be investigated.
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