Huan-Yu Wang, Zong-Ying Hu, Han-Wen Tian, Dr. Xin-Yue Hu, Dr. Yu-Chen Pan, Dr. Dong-Sheng Guo
{"title":"Non-invasive and Sensitive Fluorescence Detection of Phenylpyruvic Acid via a Guanidinomethyl-modified Calixarene","authors":"Huan-Yu Wang, Zong-Ying Hu, Han-Wen Tian, Dr. Xin-Yue Hu, Dr. Yu-Chen Pan, Dr. Dong-Sheng Guo","doi":"10.1002/anse.202300082","DOIUrl":"10.1002/anse.202300082","url":null,"abstract":"<p>Detection of phenylpyruvic acid (PPA) is important for the diagnosis of phenylketonuria (PKU). In this study, we designed a guanidinomethyl-modified calix[5]arene that can strongly and selectively bind with PPA. Via indicator displacement assay, we set up a calibration line for accurately determining PPA concentration down to the μM range in artificial urine based on the linear relationship between the fluorescence intensity and PPA concentration. This work provides a low-cost, easy-to-operate, rapid, and sensitive method for PPA detection, and may offer an alternative for PKU diagnosis in clinical study.</p>","PeriodicalId":72192,"journal":{"name":"Analysis & sensing","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139000642","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Dr. Jianping Zhu, Nian Kee Tan, Kai Kikuchi, Dr. Amandeep Kaur, Prof. Elizabeth J. New
{"title":"BODIPY-based Fluorescent Indicators for Lipid Droplets","authors":"Dr. Jianping Zhu, Nian Kee Tan, Kai Kikuchi, Dr. Amandeep Kaur, Prof. Elizabeth J. New","doi":"10.1002/anse.202300075","DOIUrl":"https://doi.org/10.1002/anse.202300075","url":null,"abstract":"<p>Invited for this month's cover are the collaborating groups of Prof. Elizabeth J. New at the University of Sydney and Dr Amandeep Kaur at Monash University. The cover picture shows how their BODIPYs selectively mark lipid droplets and indicate the trafficking of lipid droplets between adjacent cells. More information can be found in the Research Article by Amandeep Kaur, Elizabeth J. New, and co-workers.</p>","PeriodicalId":72192,"journal":{"name":"Analysis & sensing","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139468345","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Cuiyun Jia, Bin Li, Dr. Jie Pan, Dr. Fengjiao Zhu, Xue Bai, Dr. Xianming Liu, Prof. Bingcheng Lin, Prof. Yahong Chen, Prof. Yao Lu
{"title":"Braiding Three-Dimensional Paper-Based Microfluidic Devices","authors":"Cuiyun Jia, Bin Li, Dr. Jie Pan, Dr. Fengjiao Zhu, Xue Bai, Dr. Xianming Liu, Prof. Bingcheng Lin, Prof. Yahong Chen, Prof. Yao Lu","doi":"10.1002/anse.202300065","DOIUrl":"10.1002/anse.202300065","url":null,"abstract":"<p>Three-dimensional paper-based microfluidic devices have shown great potential in various applications, including point-of-care diagnostics, environmental monitoring, and tissue engineering. However, their fabrication is still limited to stacking and origami methods. Inspired by the art of bamboo braiding in China, we developed a novel fabrication technique based on the braiding concept to create three-dimensional paper-based microfluidic devices with PDMS-impregnated paper substrate as the building units. The resulting three-dimensional paper device brings unique advantages, including compactness, facile disassembly, and real-time flow visualization. The multiplexed glucose analysis with a braided device integrated with 16-switchable valves for flow control was further fabricated to demonstrate the device‘s applicability. We envision braiding-based fabrication technology opening new possibilities and bringing broad applications for three-dimensional paper microfluidic devices.</p>","PeriodicalId":72192,"journal":{"name":"Analysis & sensing","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139213529","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Juliana L. M. Gongoni, George Chumanov, Thiago R. L. C. Paixão, Dr. Carlos D. Garcia
{"title":"Au-Modified Carbon Electrodes Produced by Laser Scribing for Electrochemical Analysis of Probiotic Activity","authors":"Juliana L. M. Gongoni, George Chumanov, Thiago R. L. C. Paixão, Dr. Carlos D. Garcia","doi":"10.1002/anse.202300056","DOIUrl":"10.1002/anse.202300056","url":null,"abstract":"<p>A simple and fast (<15 min), two-step laser scribing of cardboard substrates is described as a method for fabricating carbon electrodes modified with metallic nanoparticles. The first scribing step patterned a cardboard substrate (promoting the formation of porous carbon electrodes). The second step was included to produce metallic nanoparticles via a chemical reduction process of cations from an aqueous solution. For these experiments, the effects of copper, silver, nickel, cobalt, zinc, and gold were evaluated considering their effect on the electrical properties and the composition of the carbon materials produced. These experiments revealed that, despite significant changes in resistance (from 138±7 Ω for plain electrodes to just 53±3 Ω for Au-modified electrodes), only marginal changes were observed in the morphology or composition of the material produced (I<sub>G</sub>/I<sub>D</sub> ranged from 1.2±0.3 for the plain cardboard to 1.8±0.3 for the cobalt-modified electrodes). To demonstrate the applicability of the proposed strategy, Au-modified electrodes were assembled into electrochemical sensors and applied to measure the metabolic activity of live microorganisms in various commercial samples, requiring only 100 μL of sample and 10 min of incubation time.</p>","PeriodicalId":72192,"journal":{"name":"Analysis & sensing","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/anse.202300056","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139223502","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Md Fahim Al Fattah, Hesam Abouali, Seied Ali Hosseini, Jian Yin, Asif Abdullah Khan, Hamid Aghamohammadi, Prof. Mahla Poudineh, Prof. Dayan Ban
{"title":"An Optofluidic System for Monitoring Fluorescently Activated Protein Biomarkers","authors":"Md Fahim Al Fattah, Hesam Abouali, Seied Ali Hosseini, Jian Yin, Asif Abdullah Khan, Hamid Aghamohammadi, Prof. Mahla Poudineh, Prof. Dayan Ban","doi":"10.1002/anse.202300064","DOIUrl":"10.1002/anse.202300064","url":null,"abstract":"<p>The ability to monitor protein biomarkers at clinically relevant concentrations is a powerful approach that provides insights into health status. The synergistic combination of microfluidics and photonics (optofluidic) has emerged as a new means to achieve this capability for detection and manipulation of biological samples. Here in this work, we demonstrate an optofluidic device which integrates the detection and the particle-focusing components to facilitate on-chip measurement of protein levels. With this design, we use a laser-induced fluorescence technique for the direct measurement of protein levels on magnetic bead complexes tagged with fluorescein isothiocyanate (FITC) fluorophore. The developed system was employed for the detection of human immunoglobulin G (IgG) as a model protein within a range of 0–20 μg/mL, showing an ability to resolve the fluorescence signal from different IgG concentrations down to 5.4 nM (0.81 μg/mL). The selectivity in detecting specific IgG target was tested by comparing the fluorescence signal levels from other interfering proteins such as bovine serum albumin (BSA) and human IgM. Although our system was designed for detecting IgG protein, this optofluidic device can be a powerful platform for the rapid detection of a diverse range of biomarkers, including viral pathogens retaining adequate signal sensitivity and selectivity.</p>","PeriodicalId":72192,"journal":{"name":"Analysis & sensing","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139231267","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Structural Elucidation and Relative Quantification of Fatty Acid Double Bond Positional Isomers in Biological Tissues Enabled by Gas-Phase Charge Inversion Ion/Ion Reactions","authors":"Dr. Julia R. Bonney, Dr. Boone. M Prentice","doi":"10.1002/anse.202300063","DOIUrl":"10.1002/anse.202300063","url":null,"abstract":"<p>Fatty acids (FAs) contain a vast amount of structural diversity, and differences in fatty acid structure have been associated with various disease states. Accurate identification and characterization of fatty acids is critical to fully understand the biochemical roles these compounds play in disease progression. Conventional tandem mass spectrometry (MS/MS) workflows do not provide sufficient structural information, necessitating alternative dissociation methods. Gas-phase charge inversion ion/ion reactions can be used to alter the ion type subjected to activation to provide improved or complementary structural information. Herein, we have used an ion/ion reaction between fatty acid (FA) anions and magnesium tris-phenanthroline [Mg(Phen)<sub>3</sub>] dications to promote charge remote fragmentation of carbon-carbon bonds along the fatty acid chain, allowing for localization of carbon-carbon double bond (C=C) positions to successfully differentiate monounsaturated fatty acid isomers. Relative quantification was also performed to obtain the relative abundance of fatty acid isomers in different biological tissues. For example, the relative abundance of FA 18 : 1 (9) was determined to vary across regions of rat brain, rat kidney, and mouse pancreas, and FA 16 : 1 (9) was found to have a higher relative abundance in the dermis layer compared to the sebaceous glands in human skin tissue.</p>","PeriodicalId":72192,"journal":{"name":"Analysis & sensing","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136283469","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Dr. Simone Fortunati, Prof. Marco Giannetto, Dr. Chiara Giliberti, Prof. Monica Mattarozzi, Prof. Alessandro Bertucci, Prof. Maria Careri
{"title":"Magnetic Beads as Versatile Tools for Electrochemical Biosensing Platforms in Point-of-Care Testing","authors":"Dr. Simone Fortunati, Prof. Marco Giannetto, Dr. Chiara Giliberti, Prof. Monica Mattarozzi, Prof. Alessandro Bertucci, Prof. Maria Careri","doi":"10.1002/anse.202300062","DOIUrl":"10.1002/anse.202300062","url":null,"abstract":"<p>Point-of-care technologies need particularly stringent requirements, including portability, rapidity, affordability, and ease of use, enabling healthcare practitioners to perform reliable analyses in decentralized settings. Such diagnostic tests are usually based on bioassays that allow for the detection of clinically relevant biomarkers, namely proteins, antibodies and nucleic acids. In the context of electrochemical biosensors, the implementation of magnetic beads offers unique advantages stemming from their high surface-to-volume ratio, easy manipulation through magnetic fields and versatility in surface chemistries for bio-conjugation. The present concept article highlights the advantages achieved through the implementation of magnetic beads in electrochemical binding assays, immunosensors and genosensors. These methods mostly exploit magnetic beads for immobilization purposes, allowing for the assembly of bio-complexes in liquid suspensions under precise temperature and shaking control, as well as simplifying the manipulation steps to enable untrained personnel to perform analyses. In addition, magnetic beads can also take part in the detection mechanism, leading to innovative sensing strategies with great potential for point-of-care diagnostic applications.</p>","PeriodicalId":72192,"journal":{"name":"Analysis & sensing","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/anse.202300062","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135037259","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Cover Feature: Rapid Peripheral Nerve Imaging by Fluorescent Polymer Dots for Minimizing the Risk of Intraoperative Nerve Injury (Anal. Sens. 1/2024)","authors":"Juxiang Zhang, Shuting Lu, Shiyi Tang, Yuqiao Li, Yufan Zhang, Jingru Li, Liqin Xiong","doi":"10.1002/anse.202300073","DOIUrl":"10.1002/anse.202300073","url":null,"abstract":"<p><b>The cover feature illustrates</b> the application of high-brightness green fluorescent polymer dots (Pdots) to intraoperative neuroimaging to achieve excellent tracing effects. Through direct administration, Pdots can rapidly bind to the epineurium and perineurium, stably characterizing the peripheral nerve. In addition, it was found that Pdots bind to nerve membranes, do not invade nerve cells, and have high biosafety. Our study illustrates that Pdots has the potential as a neurotracer in image-guided surgery and has significant implications for reducing iatrogenic nerve injury and related surgical complications. More information can be found in the Research Article by Liqin Xiong and co-workers.\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure>\u0000 </p>","PeriodicalId":72192,"journal":{"name":"Analysis & sensing","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/anse.202300073","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136261690","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Dr. Jianping Zhu, Nian Kee Tan, Kai Kikuchi, Dr. Amandeep Kaur, Prof. Elizabeth J. New
{"title":"Front Cover: BODIPY-based Fluorescent Indicators for Lipid Droplets (Anal. Sens. 1/2024)","authors":"Dr. Jianping Zhu, Nian Kee Tan, Kai Kikuchi, Dr. Amandeep Kaur, Prof. Elizabeth J. New","doi":"10.1002/anse.202300074","DOIUrl":"10.1002/anse.202300074","url":null,"abstract":"<p><b>The front cover image illustrates</b> the selective illumination of lipid droplets by BODIPYs, effectively highlighting the trafficking of lipid droplets between neighbouring cells. Two asymmetric BODIPY derivatives, exhibiting a red-shifted emission spectrum and a substantial Stokes shift compared to reference compounds, were successfully synthesized. These favourable fluorescence characteristics enabled the application of these derivatives in probing the influence of starvation on the intercellular exchange of lipid droplets. More information can be found in the Research Article by Amandeep Kaur, Elizabeth J. New, and co-workers.\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure>\u0000 </p>","PeriodicalId":72192,"journal":{"name":"Analysis & sensing","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/anse.202300074","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136261709","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"The Inverse Electron Demand Diels-Alder Reaction Between Tetrazine and Trans-Cyclooctene for Pretargeted Bioimaging Applications","authors":"Aihua Liao, Prof. Wei Du, Prof. Huanghao Yang","doi":"10.1002/anse.202300053","DOIUrl":"10.1002/anse.202300053","url":null,"abstract":"<p>Over the past few decades, pretargeted bioimaging has made significant contributions to disease diagnosis and the real-time visualization of biological processes. Notably, the inverse electron demand Diels-Alder (IEDDA) reaction between tetrazine (Tz) and <i>trans</i>-cyclooctene (TCO) has shown enormous potential in pretargeted bioimaging applications by capitalizing on its rapid kinetics, specific reactivity, biorthogonality and biocompatibility. To date, imaging probes based on the Tz−TCO click reaction have been extensively developed and widely used for pretargeted bioimaging applications. In this review, we focus on the Tz−TCO click reaction and summarize its applications in pretargeted bioimaging. Firstly, the fundamental principles for designing imaging probes based on the Tz−TCO click reaction are explained. Then, recent advances in imaging probes based on the Tz−TCO click reaction are discussed in detail. Finally, the current challenges and perspectives of the Tz−TCO click reaction in pretargeted bioimaging applications are presented.</p>","PeriodicalId":72192,"journal":{"name":"Analysis & sensing","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136254476","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}