{"title":"Vancomycin sensing using a phenylboronic acid-modified nanopore pipette","authors":"Fumiya Sato, Haruka Nakano, Toshio Kamijo, Kazuhiro Watanabe, Tsutomu Fujimura, Yasufumi Takahashi, Katsuhiko Sato","doi":"10.1002/elan.202300173","DOIUrl":null,"url":null,"abstract":"<p>Nanopore sensing measures the changes in charge and physical state around the nanopores as changes in ionic current. In this study, we performed vancomycin (VCM) sensing with nanopores modified via Au−S bonds with dithiobis(4-butyrylamino-<i>m</i>-phenylboronic acid) (DTBA-PBA), a derivative of phenylboronic acid (PBA) bearing a thiol. First, we modified a 3-mm-diameter Au electrode with a DTBA-PBA self-assembled monolayer (SAM) to confirm the VCM response of the PBA interface by cyclic voltammetry. DTBA-PBA was then immobilized in the same manner on a nanopore pipette coated with an Au layer. We measured the VCM concentration from the change in ion current using the nanopore pipette. A VCM concentration-dependent ionic current response was observed in the range of 0.01–1 mM. Many kinds of pharmaceuticals can bind to PBA; therefore, this method could be used for quick, easy, in situ quantification of not only VCM but also other pharmaceuticals with serious side effects.</p>","PeriodicalId":162,"journal":{"name":"Electroanalysis","volume":"35 11","pages":""},"PeriodicalIF":2.7000,"publicationDate":"2023-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Electroanalysis","FirstCategoryId":"92","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/elan.202300173","RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, ANALYTICAL","Score":null,"Total":0}
引用次数: 0
Abstract
Nanopore sensing measures the changes in charge and physical state around the nanopores as changes in ionic current. In this study, we performed vancomycin (VCM) sensing with nanopores modified via Au−S bonds with dithiobis(4-butyrylamino-m-phenylboronic acid) (DTBA-PBA), a derivative of phenylboronic acid (PBA) bearing a thiol. First, we modified a 3-mm-diameter Au electrode with a DTBA-PBA self-assembled monolayer (SAM) to confirm the VCM response of the PBA interface by cyclic voltammetry. DTBA-PBA was then immobilized in the same manner on a nanopore pipette coated with an Au layer. We measured the VCM concentration from the change in ion current using the nanopore pipette. A VCM concentration-dependent ionic current response was observed in the range of 0.01–1 mM. Many kinds of pharmaceuticals can bind to PBA; therefore, this method could be used for quick, easy, in situ quantification of not only VCM but also other pharmaceuticals with serious side effects.
期刊介绍：
Electroanalysis is an international, peer-reviewed journal covering all branches of electroanalytical chemistry, including both fundamental and application papers as well as reviews dealing with new electrochemical sensors and biosensors, nanobioelectronics devices, analytical voltammetry, potentiometry, new electrochemical detection schemes based on novel nanomaterials, fuel cells and biofuel cells, and important practical applications.
Serving as a vital communication link between the research labs and the field, Electroanalysis helps you to quickly adapt the latest innovations into practical clinical, environmental, food analysis, industrial and energy-related applications. Electroanalysis provides the most comprehensive coverage of the field and is the number one source for information on electroanalytical chemistry, electrochemical sensors and biosensors and fuel/biofuel cells.
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