Assembly of highly efficient aqueous light-harvesting system from sequence-defined peptoids for cytosolic microRNA detection

被引：4
作者：
Song, Yang [1 ,2 ]
Cai, Xiaoli [1 ]
Wang, Mingming [2 ]
Du, Dan [1 ]
Lin, Yuehe [1 ]
Chen, Chun-Long [2 ,3 ]
机构：
[1] Washington State Univ, Dept Mech & Mat Engn, Pullman, WA 99164 USA
[2] Pacific Northwest Natl Lab, Div Phys Sci, Richland, WA 99352 USA
[3] Univ Washington, Dept Chem Engn, Seattle, WA 98195 USA
来源：
NANO RESEARCH | 2024年 / 17卷 / 02期
关键词：
light-harvesting; peptoid nanotube; Forster resonance energy transfer; intracellular RNA detection; SELF-POWERED BIOSENSOR; ENERGY-TRANSFER; CRYSTAL-STRUCTURE; FLUORESCENCE; QUANTIFICATION; SPECTROSCOPY; NANOTUBES; ABSOLUTE; COMPLEX;
D O I：
10.1007/s12274-023-6008-0
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Precisely controlled spatial distributions of artificial light-harvesting systems in aqueous media are of significant importance for mimicking natural light-harvesting systems; however, they are often restrained by the solubility and the aggregation-caused quenching effect of the hydrophobic chromophores. Herein, we report one highly efficient artificial light-harvesting system based on peptoid nanotubes that mimic the hierarchical cylindrical structure of natural systems. The high crystallinity of these nanotubes enabled the organization of arrays of donor chromophores with precisely controlled spatial distributions, favoring an efficient Forster resonance energy transfer (FRET) process in aqueous media. This FRET system exhibits an extremely high efficiency of 98.6% with a fluorescence quantum yield of 40% and an antenna effect of 29.9. We further demonstrated the use of this artificial light-harvesting system for quantifying miR-210 within cancer cells. The fluorescence intensity ratio of donor to acceptor is linearly related to the concentration of intercellular miR-210 in the range of 3.3-156 copies/cell. Such high sensitivity in intracellular detection of miR-210 using this artificial light-harvesting system offers a great opportunity and pathways for biological imaging and detection, and for the further creation of microRNA (miRNA) toolbox for quantitative epigenetics and personalized medicine.
引用
收藏
页码：788 / 796
页数：9
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