Subcellular resolution mapping of endogenous cytokine secretion by nano-plasmonic-resonator sensor array.

Subcellular resolution mapping of endogenous cytokine secretion by nano-plasmonic-resonator sensor array.
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纳米质量谐波传感器阵列对内源性细胞因子分泌的亚细胞分辨率映射。

DOI:
10.1021/nl2018838
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发表时间:
2011-08-10
期刊:
影响因子:
10.8
通讯作者:
Zhang X
Zhang X
中科院分区:
材料科学1区
文献类型:
--
作者:
Wang S;Ota S;Guo B;Ryu J;Rhodes C;Xiong Y;Kalim S;Zeng L;Chen Y;Teitell MA;Zhang X

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局部细胞外信号传导是细胞相互作用和组织的中心。我们报告了一种新的传感技术,在亚细胞水平上询问细胞外信号。我们开发了一种基于纳米压印光刻(NIL)制造的可调纳米等离子体共振器(TNPR)阵列的巨大光学增强的原位免疫分析。我们的纳米等离子体激元装置显著提高了信噪比,从而首次实现了内源性细胞因子分泌的亚微米分辨率定量映射。我们的研究表明,一个显着高的局部白细胞介素-2(IL-2)的浓度在细胞附近,最终验证了几十年的假设自分泌的生理浓度和空间范围内。这种通用的传感技术可以应用于广泛的细胞通信研究,以提高我们对亚细胞信号和功能的理解。
Local extracellular signaling is central for cellular interactions and organizations. We report a novel sensing technique to interrogate extracellular signaling at the subcellular level. We developed an in-situ immunoassay based on giant optical enhancement of a tunable-nano-plasmonic-resonator (TNPR) array fabricated by nano-imprint lithography (NIL). Our nano-plasmonic device significantly increases the signal-to-noise ratio to enable the first time sub-micron resolution quantitative mapping of endogenous cytokine secretion. Our study shows a markedly high local interleukin-2 (IL-2) concentration within the immediate vicinity of the cell which finally validates a decades-old hypothesis on autocrine physiological concentration and spatial range. This general sensing technique can be applied for a broad range of cellular communication studies to improve our understanding of subcellular signaling and function.
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