Recent advances of small molecule detection in nanopore sensing

被引:2
|
作者
Wang, Runyu [1 ]
Zhang, Yinuo [2 ]
Ma, Qianli D. Y. [2 ]
Wu, Lingzhi [1 ]
机构
[1] Nanjing Univ Posts & Telecommun, Coll Sci, Nanjing 210046, Peoples R China
[2] Nanjing Univ Posts & Telecommun, Coll Integrated Circuit Sci & Engn, Nanjing 210046, Peoples R China
关键词
Nanopore; Small molecule; Host -guest recognition; Nucleic acid aptamers; Ion current rectification; ION CURRENT RECTIFICATION; SOLID-STATE NANOPORES; TRANS LOCATION; DNA; PROTEIN; DYNAMICS; REVERSAL;
D O I
10.1016/j.talanta.2024.126323
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
Due to its advantages of label -free and highly sensitive, the resistive pulse sensing with a nanopore has recently become even more potent for the discrimination of analytes in single molecule level. Generally, a transient interruption of ion current originated from the captured molecule passing through a nanopore will provide the rich information on the structure, charge and translocation dynamics of the analytes. Therefore, nanopore sensors have been widely used in the fields of DNA sequencing, protein recognition, and the portable detection of varied macromolecules and particles. However, the conventional nanopore devices are still lack of sufficient selectivity and sensitivity to distinguish more metabolic molecules involving ATP, glucose, amino acids and small molecular drugs because it is hard to receive a large number of identifiable signals with the fabricated pores comparable in size to small molecules for nanopore sensing. For all this, a series of innovative strategies developed in the past decades have been summarized in this review, including host -guest recognition, engineering alteration of protein channel, the introduction of nucleic acid aptamers and various delivery carriers integrating signal amplification sections based on the biological and solid nanopore platforms, to achieve the high resolution for the small molecules sensing in micro -nano environment. These works have greatly enhanced the powerful sensing capabilities and extended the potential application of nanopore sensors.
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页数:11
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