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
中科院分区:
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
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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