FRET excited ratiometric oxygen sensing in living tissue.

FRET excited ratiometric oxygen sensing in living tissue.
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DOI:
10.1016/j.jneumeth.2013.01.002
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发表时间:
2013-03-30
影响因子:
3
通讯作者:
Schiff, Steven J.
Schiff, Steven J.
中科院分区:
医学4区
文献类型:
--
作者:
Ingram, Justin M.;Zhang, Chunfeng;Xu, Jian;Schiff, Steven J.

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氧气(O2)的动态分析一直受到缺乏实时,定量和生物相容性传感器的限制。为了满足这些需求,我们设计了一个比例光极矩阵组成的磷光淬灭染料铂(II)八乙基卟啉酮(PtOEPK)和纳米晶体量子点(NQD),当嵌入在惰性聚合物基质允许长期预先设计的激发通过荧光共振能量转移(FRET)。将这种基质沉积在各种玻璃基底上,可以开发出一系列光学传感器,这些传感器能够在活性脑组织的不同生物微域中以数百毫秒的时间分辨率测量间隙氧浓度[O2]。
Dynamic analysis of oxygen (O2) has been limited by the lack of a real-time, quantitative, and biocompatible sensor. To address these demands, we designed a ratiometric optode matrix consisting of the phosphorescence quenching dye platinum (II) octaethylporphine ketone (PtOEPK) and nanocystal quantum dots (NQDs), which when embedded within an inert polymer matrix allows long-term pre-designed excitation through fluorescence resonance energy transfer (FRET). Depositing this matrix on various glass substrates allowed the development of a series of optical sensors able to measure interstitial oxygen concentration [O2] with several hundred millisecond temporal resolution in varying biological microdomains of active brain tissue.
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