201
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Zhou P, Lu F, Pan W, Yin J, Li N, Tang B. Cyclic chain displacement amplification-based dual-miRNA detection: a triple-line lateral flow strip for the diagnosis of lung cancer. Chem Commun (Camb) 2021; 57:12301-12304. [PMID: 34730575 DOI: 10.1039/d1cc05442b] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Herein, we developed a triple-line lateral flow strip-based platform combined with an miRNA-initiated cyclic chain displacement reaction for the rapid and simultaneous dual-miRNA detection of lung cancer in a single strip test. The simultaneous dual-miRNA detection platform was used for the analysis of clinical serum samples, and distinguished non-small cell lung cancer patients from heathy individuals.
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Affiliation(s)
- Ping Zhou
- College of Chemistry, Chemical Engineering and Materials Science, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Institute of Molecular and Nano Science, Shandong Normal University, Jinan 250014, P. R. China.
| | - Fei Lu
- College of Chemistry, Chemical Engineering and Materials Science, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Institute of Molecular and Nano Science, Shandong Normal University, Jinan 250014, P. R. China.
| | - Wei Pan
- College of Chemistry, Chemical Engineering and Materials Science, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Institute of Molecular and Nano Science, Shandong Normal University, Jinan 250014, P. R. China.
| | - Jiaqi Yin
- College of Chemistry, Chemical Engineering and Materials Science, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Institute of Molecular and Nano Science, Shandong Normal University, Jinan 250014, P. R. China.
| | - Na Li
- College of Chemistry, Chemical Engineering and Materials Science, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Institute of Molecular and Nano Science, Shandong Normal University, Jinan 250014, P. R. China.
| | - Bo Tang
- College of Chemistry, Chemical Engineering and Materials Science, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Institute of Molecular and Nano Science, Shandong Normal University, Jinan 250014, P. R. China.
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202
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Development of an accurate lateral flow immunoassay for PEDV detection in swine fecal samples with a filter pad design. ANIMAL DISEASES 2021; 1:27. [PMID: 34778887 PMCID: PMC8572657 DOI: 10.1186/s44149-021-00029-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Accepted: 10/12/2021] [Indexed: 12/28/2022] Open
Abstract
Porcine epidemic diarrhea virus (PEDV), as the main causative pathogen of viral diarrhea in pigs, has been reported to result in high morbidity and mortality in neonatal piglets and cause significant economic losses to the swine industry. Rapid diagnosis methods are essential for preventing outbreaks and transmission of this disease. In this study, a paper-based lateral flow immunoassay for the rapid diagnosis of PEDV in swine fecal samples was developed using stable color-rich latex beads as the label. Under optimal conditions, the newly developed latex bead-based lateral flow immunoassay (LBs-LFIA) attained a limit of detection (LOD) as low as 103.60 TCID50/mL and no cross-reactivity with other related swine viruses. To solve swine feces impurity interference, by adding a filtration unit design of LFIA without an additional pretreatment procedure, the LBs-LFIA gave good agreement (92.59%) with RT-PCR results in the analysis of clinical swine fecal samples (n = 108), which was more accurate than previously reported colloidal gold LFIA (74.07%) and fluorescent LFIA (86.67%). Moreover, LBs-LFIA showed sufficient accuracy (coefficient of variance [CV] < 15%) and stable (room temperature storage life > 56 days) performance for PEDV detection, which is promising for on-site analysis and user-driven testing in pig production system.
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203
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Moulahoum H, Ghorbanizamani F, Timur S. Paper-based lateral flow assay using rhodamine B-loaded polymersomes for the colorimetric determination of synthetic cannabinoids in saliva. Mikrochim Acta 2021; 188:402. [PMID: 34731326 DOI: 10.1007/s00604-021-05062-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2021] [Accepted: 10/12/2021] [Indexed: 12/18/2022]
Abstract
Synthetic cannabinoids are one of the many substances of abuse widely spreading in modern society. Medical practitioners and law enforcement alike highly seek portable, efficient, and reliable tools for on-site detection and diagnostics. Here, we propose a colorimetric lateral flow assay (LFA) combined with dye-loaded polymersome to detect the synthetic cannabinoid JWH-073 efficiently. Rhodamine B-loaded polymersome was conjugated to antibodies and fully characterized. Two LFA were proposed (sandwich and competitive), showing a high level of sensitivity with a limit of detection (LOD) reaching 0.53 and 0.31 ng/mL, respectively. The competitive assay was further analyzed by fluorescence, where the LOD reached 0.16 ng/mL. The application of the LFA over spiked synthetic saliva or real human saliva demonstrated an overall response of 94% for the sandwich assay and 97% for the competitive LFA. The selectivity of the system was assessed in the presence of various interferents. The analytical performance of the LFA system showed a coefficient of variation below 6%. The current LFA system appears as a plausible system for non-invasive detection of substance abuse and shows promise for synthetic cannabinoid on-site sensing.
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Affiliation(s)
- Hichem Moulahoum
- Department of Biochemistry, Faculty of Science, Ege University, 35100-Bornova, Izmir, Turkey.
| | - Faezeh Ghorbanizamani
- Department of Biochemistry, Faculty of Science, Ege University, 35100-Bornova, Izmir, Turkey.
| | - Suna Timur
- Department of Biochemistry, Faculty of Science, Ege University, 35100-Bornova, Izmir, Turkey.
- Central Research Test and Analysis Laboratory Application and Research Center, Ege University, 35100-Bornova, Izmir, Turkey.
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204
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Garifullina A, Shen AQ. High-throughput fabrication of high aspect ratio Ag/Al nanopillars for optical detection of biomarkers. J Mater Chem B 2021; 9:8851-8861. [PMID: 34647953 DOI: 10.1039/d1tb01556g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Nanomaterial-based optical techniques for biomarker detection have garnered tremendous attention from the nanofabrication community due to their high precision and enhanced limit of detection (LoD) features. These nanomaterials are highly responsive to local refractive index (RI) fluctuations, and their RI unit sensitivity can be tuned by varying the chemical composition, geometry, and dimensions of the utilized nanostructures. To improve the sensitivity and LoD values of these nanomaterials, it is common to increase both dimensions and aspect ratios of the fabricated nanostructures. However, limited by the complexity, prolonged duration, and elevated costs of the available nanofabrication techniques, mass production of these nanostructures remains challenging. To address not only high accuracy, but also speed and production effectiveness in these nanostructures' fabrication, our work reports, for the first time, a fast, high-throughput, and cost-effective nanofabrication protocol for routine manufacturing of polymer-based nanostructures with high sensitivity and calculated LoD in the pM range by utilizing anodized aluminum oxide (AAO) membranes as templates. Specifically, our developed platform consists of arrays of nearly uniform polystyrene nanopillars with an average diameter of ∼185 nm and aspect ratio of ∼11. We demonstrate that these nanostructures can be produced at a high speed and a notably low price, and that they can be efficiently applied for biosensing purposes after being coated with aluminum-doped silver (Ag/Al) thin films. Our platform successfully detected very low concentrations of human C-reactive protein (hCRP) and SARS-CoV-2 spike protein biomarkers in human plasma samples with LoDs of 11 and 5 pM, respectively. These results open new opportunities for day-to-day fabrication of high aspect ratio arrays of nanopillars that can be used as a base for nanoplasmonic sensors with competitive LoD values. This, in turn, contributes to the development of point-of-care devices and further improvement of the existing nanofabrication techniques, thereby enriching the fields of pharmacology, clinical analysis, and diagnostics.
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Affiliation(s)
- Ainash Garifullina
- Micro/Bio/Nanofluidics Unit, Okinawa Institute of Science and Technology Graduate University, 1919-1 Tancha, Onna-son, Okinawa 904-0412, Japan.
| | - Amy Q Shen
- Micro/Bio/Nanofluidics Unit, Okinawa Institute of Science and Technology Graduate University, 1919-1 Tancha, Onna-son, Okinawa 904-0412, Japan.
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205
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Ivanov AV, Safenkova IV, Zherdev AV, Dzantiev BB. Recombinase Polymerase Amplification Assay with and without Nuclease-Dependent-Labeled Oligonucleotide Probe. Int J Mol Sci 2021; 22:11885. [PMID: 34769313 PMCID: PMC8584857 DOI: 10.3390/ijms222111885] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Revised: 10/28/2021] [Accepted: 10/29/2021] [Indexed: 01/18/2023] Open
Abstract
The combination of recombinase polymerase amplification (RPA) and lateral flow test (LFT) is a strong diagnostic tool for rapid pathogen detection in resource-limited conditions. Here, we compared two methods generating labeled RPA amplicons following their detection by LFT: (1) the basic one with primers modified with different tags at the terminals and (2) the nuclease-dependent one with the primers and labeled oligonucleotide probe for nuclease digestion that was recommended for the high specificity of the assay. Using both methods, we developed an RPA-LFT assay for the detection of worldwide distributed phytopathogen-alfalfa mosaic virus (AMV). A forward primer modified with fluorescein and a reverse primer with biotin and fluorescein-labeled oligonucleotide probe were designed and verified by RPA. Both labeling approaches and their related assays were characterized using the in vitro-transcribed mRNA of AMV and reverse transcription reaction. The results demonstrated that the RPA-LFT assay based on primers-labeling detected 103 copies of RNA in reaction during 30 min and had a half-maximal binding concentration 22 times lower than probe-dependent RPA-LFT. The developed RPA-LFT was successfully applied for the detection of AMV-infected plants. The results can be the main reason for choosing simple labeling with primers for RPA-LFT for the detection of other pathogens.
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Affiliation(s)
| | | | | | - Boris B. Dzantiev
- A.N. Bach Institute of Biochemistry, Research Centre of Biotechnology of the Russian Academy of Sciences, Leninsky Prospect 33, 119071 Moscow, Russia; (A.V.I.); (I.V.S.); (A.V.Z.)
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206
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Tripathi A, Harris KD, Elias AL. High surface area nitrogen-functionalized Ni nanozymes for efficient peroxidase-like catalytic activity. PLoS One 2021; 16:e0257777. [PMID: 34637444 PMCID: PMC8509884 DOI: 10.1371/journal.pone.0257777] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Accepted: 09/09/2021] [Indexed: 11/25/2022] Open
Abstract
Nitrogen-functionalization is an effective means of improving the catalytic performances of nanozymes. In the present work, plasma-assisted nitrogen modification of nanocolumnar Ni GLAD films was performed using an ammonia plasma, resulting in an improvement in the peroxidase-like catalytic performance of the porous, nanostructured Ni films. The plasma-treated nanozymes were characterized by TEM, SEM, XRD, and XPS, revealing a nitrogen-rich surface composition. Increased surface wettability was observed after ammonia plasma treatment, and the resulting nitrogen-functionalized Ni GLAD films presented dramatically enhanced peroxidase-like catalytic activity. The optimal time for plasma treatment was determined to be 120 s; when used to catalyze the oxidation of the colorimetric substrate TMB in the presence of H2O2, Ni films subjected to 120 s of plasma treatment yielded a much higher maximum reaction velocity (3.7⊆10-8 M/s vs. 2.3⊆10-8 M/s) and lower Michaelis-Menten coefficient (0.17 mM vs. 0.23 mM) than pristine Ni films with the same morphology. Additionally, we demonstrate the application of the nanozyme in a gravity-driven, continuous catalytic reaction device. Such a controllable plasma treatment strategy may open a new door toward surface-functionalized nanozymes with improved catalytic performance and potential applications in flow-driven point-of-care devices.
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Affiliation(s)
- Anuja Tripathi
- National Research Council Canada, Nanotechnology Research Centre, Edmonton, Edmonton, Canada
- Department of Chemical and Materials Engineering, University of Alberta, Edmonton, Canada
| | - Kenneth D. Harris
- National Research Council Canada, Nanotechnology Research Centre, Edmonton, Edmonton, Canada
- Department of Mechanical Engineering, University of Alberta, Edmonton, Canada
| | - Anastasia L. Elias
- Department of Chemical and Materials Engineering, University of Alberta, Edmonton, Canada
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207
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Tsuboi I, Iinuma K. Immunochromatography-Application Example and POCT Type Genetic Testing. Chem Pharm Bull (Tokyo) 2021; 69:984-988. [PMID: 34602580 DOI: 10.1248/cpb.c21-00164] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Membrane-based rapid test reagents including immunochromatography are widely used in clinical practice. Recently, high-sensitive reagents based on the immunochromatography method, such as silver amplification method and time resolved fluorescence method for influenza testing, has been developed and early confirmation of infection can be achieved. Furthermore, genetic testing, automated all the steps from extraction till detection, is getting popular. Genetic testing of mycoplasma by Smart Gene Myco system and Coronavirus disease 2019 (COVID-19) test is a good example of membrane-based rapid test reagents. This system uses silica particle-containing membrane filter and enable to shorten the assay time by automates pre-treatment process for removing contamination substances in the sample which affect polymerase-chain-reaction amplification. We hope utilized genetic testing application will help quick confirmation of COVID-19 positive patient and prevent the collapse of medical system under COVID-19 development.
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Affiliation(s)
- Isami Tsuboi
- Pharmaceutical Affairs Department, BML Medical Works Inc
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208
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Napione L. Integrated Nanomaterials and Nanotechnologies in Lateral Flow Tests for Personalized Medicine Applications. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:2362. [PMID: 34578678 PMCID: PMC8465858 DOI: 10.3390/nano11092362] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/13/2021] [Revised: 09/06/2021] [Accepted: 09/08/2021] [Indexed: 01/09/2023]
Abstract
The goal of personalized medicine is to target the right treatments to the right patients at the right time. Patients with a variety of cancers and other complex diseases are regularly tested as part of patient care, enabling physicians to personalize patient monitoring and treatment. Among the sought-after diagnostic tools, there is an increasing interest and need for those based on a low-cost, easy, rapid, and accurate method for the detection of specific circulating biomarkers above a detection threshold. Lateral flow tests (LFTs), enhanced by nanotechnology, can fulfil these requirements, providing a significant support to personalized patient monitoring. In this review, after a short historical synopsis of membrane-based lateral flow assays, including a description of a typical configuration of a LFT strip, a careful collection is presented of the best characterized nanotechnology approaches previously reported for the enhancement of target detection performance. The attempt is to offer an overview of currently integrated nanotechnologies in LFTs, fostering the actual future development of advantageous diagnostic devices for patient monitoring.
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Affiliation(s)
- Lucia Napione
- Department of Applied Science and Technology, Politecnico di Torino, 10129 Torino, Italy
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209
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Lv Y, Xu H, Wu R, Xu Y, Li N, Li J, Shen H, Ma H, Guo F, Li LS. A quantum dot microspheres-based highly specific and sensitive three-dimensional microarray for multiplexed detection of inflammatory factors. NANOTECHNOLOGY 2021; 32:485101. [PMID: 34371487 DOI: 10.1088/1361-6528/ac1bdd] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Accepted: 08/08/2021] [Indexed: 06/13/2023]
Abstract
The development trend ofin vitrodiagnostics is to obtain various biological information from a sample at extremely low concentration and volume, which has promoted its progress in accurate and sensitive multiplexed detection. Here, we developed a single color quantum dot (QD) based three-dimensional (3D) structure matrix microarray and conducted the detection of two inflammatory factors (C-reactive protein (CRP) and serum amyloid A (SAA)) by a self-built fluorescence detection system. This strategy increased detection sensitivity by immobilizing the antibody specifically on the 3D substrate because it captured more than about 7 times of 'effective' antibodies compared to the two-dimensional (2D) plane. Compared to the dual QDs-2D fluorescence-linked immunosorbent assay, the limit of detection (LOD) of 3D microarray based on QDs modified with amphiphilic polymers has been further improved to 0.11 ng ml-1for SAA assay and to 0.16 ng ml-1for CRP assay, respectively. By using QD microspheres (SiO2@QDs@SiO2-COOH, containing approximately 200-300 hydrophobic QDs on per SiO2sphere) as fluorescent labels, the LOD for CRP and SAA of 3D microarray reached as high as 15 pg ml-1and 86 pg ml-1, and the sensitivity was further improved by 28-fold and 425-fold, respectively. Because of its excellent performance, this QD microspheres-based 3D microarray has great application potential for highly sensitive and multiplexed quantitative detection of other biomarkers, small molecules, and antibiotic residues in biomedicine and food safety.
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Affiliation(s)
- Yanbing Lv
- Key Lab for Special Functional Materials of Ministry of Education, and School of Materials Science and Engineering, Henan University, Kaifeng, 475004, People's Republic of China
- School of Chemistry, Liaoning University, Shenyang, 110036, People's Republic of China
| | - Hongke Xu
- Division of Nanobiomedicine, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou, 215123, People's Republic of China
| | - Ruili Wu
- Key Lab for Special Functional Materials of Ministry of Education, and School of Materials Science and Engineering, Henan University, Kaifeng, 475004, People's Republic of China
| | - Yanxia Xu
- Key Lab for Special Functional Materials of Ministry of Education, and School of Materials Science and Engineering, Henan University, Kaifeng, 475004, People's Republic of China
| | - Ning Li
- Key Lab for Special Functional Materials of Ministry of Education, and School of Materials Science and Engineering, Henan University, Kaifeng, 475004, People's Republic of China
| | - Jinjie Li
- Key Lab for Special Functional Materials of Ministry of Education, and School of Materials Science and Engineering, Henan University, Kaifeng, 475004, People's Republic of China
| | - Huaibin Shen
- Key Lab for Special Functional Materials of Ministry of Education, and School of Materials Science and Engineering, Henan University, Kaifeng, 475004, People's Republic of China
| | - Hongwei Ma
- Division of Nanobiomedicine, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou, 215123, People's Republic of China
| | - Fang Guo
- School of Chemistry, Liaoning University, Shenyang, 110036, People's Republic of China
| | - Lin Song Li
- Key Lab for Special Functional Materials of Ministry of Education, and School of Materials Science and Engineering, Henan University, Kaifeng, 475004, People's Republic of China
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210
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Li Y, Xie H, Wang J, Li X, Xiao Z, Xu Z, Lei H, Shen X. Lateral Flow Immunochromatography Assay for Detection of Furosemide in Slimming Health Foods. Foods 2021; 10:2041. [PMID: 34574151 PMCID: PMC8470185 DOI: 10.3390/foods10092041] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2021] [Revised: 08/20/2021] [Accepted: 08/23/2021] [Indexed: 01/02/2023] Open
Abstract
In recent years, furosemide has been found to be abused in slimming health foods. There is an urgent need for a simpler, faster method for detecting furosemide in slimming health foods. In this study, a rapid, convenient and sensitive lateral flow immunochromatography (LFIA) based on Au nanoparticles (AuNPs) was established for the first time. Under optimal conditions, the qualitative limit of detection (LOD) of the AuNPs-based LFIA was 1.0~1.2 μg/g in slimming health foods with different substrates. AuNPs-LFIA could specifically detect furosemide within 12 min (including sample pretreatment) and be read by the naked eye. The developed AuNPs-LFIA showed high consistency with liquid chromatography with tandem mass spectrometry (LC-MS/MS), and no false positive or false negative results were found in spiked slimming health foods, proving that the AuNPs-LFIA should be accurate and reliable. The AuNPs-LFIA reported here provides a serviceable analytical tool for the on-site detection and rapid initial screening of furosemide for the first time.
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Affiliation(s)
| | | | | | | | | | | | | | - Xing Shen
- Guangdong Provincial Key Laboratory of Food Quality and Safety, South China Agricultural University, Guangzhou 510642, China; (Y.L.); (H.X.); (J.W.); (X.L.); (Z.X.); (Z.X.); (H.L.)
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211
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Hsiao WWW, Le TN, Pham DM, Ko HH, Chang HC, Lee CC, Sharma N, Lee CK, Chiang WH. Recent Advances in Novel Lateral Flow Technologies for Detection of COVID-19. BIOSENSORS 2021; 11:295. [PMID: 34562885 PMCID: PMC8466143 DOI: 10.3390/bios11090295] [Citation(s) in RCA: 55] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/24/2021] [Revised: 08/21/2021] [Accepted: 08/22/2021] [Indexed: 02/07/2023]
Abstract
The development of reliable and robust diagnostic tests is one of the most efficient methods to limit the spread of coronavirus disease 2019 (COVID-19), which is caused by the severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2). However, most laboratory diagnostics for COVID-19, such as enzyme-linked immunosorbent assay (ELISA) and reverse transcriptase-polymerase chain reaction (RT-PCR), are expensive, time-consuming, and require highly trained professional operators. On the other hand, the lateral flow immunoassay (LFIA) is a simpler, cheaper device that can be operated by unskilled personnel easily. Unfortunately, the current technique has some limitations, mainly inaccuracy in detection. This review article aims to highlight recent advances in novel lateral flow technologies for detecting SARS-CoV-2 as well as innovative approaches to achieve highly sensitive and specific point-of-care testing. Lastly, we discuss future perspectives on how smartphones and Artificial Intelligence (AI) can be integrated to revolutionize disease detection as well as disease control and surveillance.
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Affiliation(s)
- Wesley Wei-Wen Hsiao
- Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei 106, Taiwan; (T.-N.L.); (H.-C.C.); (N.S.); (C.-K.L.)
| | - Trong-Nghia Le
- Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei 106, Taiwan; (T.-N.L.); (H.-C.C.); (N.S.); (C.-K.L.)
| | - Dinh Minh Pham
- GENTIS JSC, 249A, Thuy Khue, Tay Ho, Hanoi 100000, Vietnam;
- Institute of Biotechnology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi 100000, Vietnam
| | - Hui-Hsin Ko
- Institute of Biological Chemistry, Academia Sinica, Taipei 115, Taiwan; (H.-H.K.); (C.-C.L.)
| | - Huan-Cheng Chang
- Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei 106, Taiwan; (T.-N.L.); (H.-C.C.); (N.S.); (C.-K.L.)
- Institute of Atomic and Molecular Sciences, Academia Sinica, Taipei 106, Taiwan
| | - Cheng-Chung Lee
- Institute of Biological Chemistry, Academia Sinica, Taipei 115, Taiwan; (H.-H.K.); (C.-C.L.)
| | - Neha Sharma
- Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei 106, Taiwan; (T.-N.L.); (H.-C.C.); (N.S.); (C.-K.L.)
| | - Cheng-Kang Lee
- Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei 106, Taiwan; (T.-N.L.); (H.-C.C.); (N.S.); (C.-K.L.)
| | - Wei-Hung Chiang
- Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei 106, Taiwan; (T.-N.L.); (H.-C.C.); (N.S.); (C.-K.L.)
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212
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Abstract
This article provides a comprehensive review of biosensing with DNAzymes, providing an overview of different sensing applications while highlighting major progress and seminal contributions to the field of portable biosensor devices and point-of-care diagnostics. Specifically, the field of functional nucleic acids is introduced, with a specific focus on DNAzymes. The incorporation of DNAzymes into bioassays is then described, followed by a detailed overview of recent advances in the development of in vivo sensing platforms and portable sensors incorporating DNAzymes for molecular recognition. Finally, a critical perspective on the field, and a summary of where DNAzyme-based devices may make the biggest impact are provided.
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Affiliation(s)
- Erin M McConnell
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, Ontario L8S 4K1, Canada.
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213
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214
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Xu LD, Zhu J, Ding SN. Immunoassay of SARS-CoV-2 nucleocapsid proteins using novel red emission-enhanced carbon dot-based silica spheres. Analyst 2021; 146:5055-5060. [PMID: 34282816 DOI: 10.1039/d1an01010g] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
It is imminent to develop a new type of rapid COVID-19 detection method with high sensitivity. Here, we used novel red emission-enhanced carbon dot (CD)-based silica (RCS) spheres as the signals of lateral flow immunochromatography (LFI) to ultrasensitively detect novel severe acute respiratory syndrome coronavirus 2 nucleocapsid proteins (SARS-CoV-2 NPs). The red emission of CDs can be enhanced and enriched in silica spheres by a simple way. The amino ends of the N-β-(aminoethyl)-γ-aminopropyltrimethoxy anchor carboxyl-rich CDs and enhance the red emission, while the other end is embedded in the silica carrier. Then, the composite silica spheres werecoated with 3-(triethylsilyl) propylamine to protect the CDs, promote bioconjugation and obtain RCS spheres. The optimal emission peaks of the aqueous solution and the solid state of RCS spheres were at 634 nm and 638 nm, respectively, with quantum yields (QYs) of 48.5% and 35.7%, respectively. Their red emission has a wide excitation range (from the ultraviolet region to the red region), and the best excitation wavelength is about 580 nm. Two fluorescence detection modes of the RCS-LFI technology for the SARS-CoV-2 NP assay are available: the simple mode of observation under ultraviolet light has a sensitivity of 100 pg mL-1; the advanced mode of detection under a fluorescence microscope has a sensitivity of 10 pg mL-1. This assay also exhibits the advantages of fast detection speed, high specificity, and simple operation. In addition, the feasibility of this method in actual sample detection was verified in human serum by the standard-addition method, and the results show that the method has excellent practicability. We believe that this method will be a valuable supplement for the diagnosis of COVID-19.
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Affiliation(s)
- Lai-Di Xu
- Jiangsu Province Hi-Tech Key Laboratory for Bio-medical Research, School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China.
| | - Jin Zhu
- Huadong Medical Institute of Biotechniques, Nanjing 210002, China
| | - Shou-Nian Ding
- Jiangsu Province Hi-Tech Key Laboratory for Bio-medical Research, School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China.
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215
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Multifunctional bacteria-derived tags for advancing immunoassay analytical performance with dual-channel switching and antibodies bioactivity sustaining. Biosens Bioelectron 2021; 192:113538. [PMID: 34343740 DOI: 10.1016/j.bios.2021.113538] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Revised: 07/22/2021] [Accepted: 07/27/2021] [Indexed: 12/14/2022]
Abstract
Constructing multifunctional immunochromatographic assays (ICA) carriers with multiple signals and retaining bioactivity of monoclonal antibodies (mAbs) are conducive to the sensitive and accurate point-of-care testing (POCT). To fulfill this pressing need, a microorganism-based microsphere mediated dual-modal ICA (DICA) was developed for sensitive and reliable detection of zearalenone (ZEN). As the key to the biosensor, a superb biotag with an intact coccus morphology was designed based on Staphylococcus aureus biosynthesized quantum dots incorporating Ru(bpy)32+ (SAQDsRu), in which SA offered a specific recognition capacity for Fc region of mAbs, QDs endowed a naked-eye discernible colorimetric signal on the SA, and robust fluorescence signal that remedied for the insufficient brightness of QDs was derived from Ru(bpy)32+. The characterization of SAQDsRu-labeled mAb (SAQDsRu-mAb) probe demonstrated strong luminescence, excellent stability and high affinity with ZEN (affinity constant was approximately 1.723 × 109 M-1), which can significantly improve the detection sensitivity. Impressively, a portable sensing system was developed by the integration of SAQDsRu-DICA with a smartphone-based readout. After optimization, this DICA indicated a limit of detection reaching down to 0.008 ng/mL (colorimetric mode) and 0.0058 ng/mL (fluorescent mode), which were much lower than that of conventional gold nanoparticles-based ICA (0.1029 ng/mL), possessing favorable specificity and repeatability (relative standard deviation (RSD) < 10%). Moreover, the feasibility of the immunoassay was further assessed by measuring ZEN in real samples with satisfactory recoveries, and the results are good consistent with liquid chromatography tandem mass spectrometry (LC-MS/MS).
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216
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Yao L, Xu J, Cheng J, Yao B, Zheng L, Liu G, Chen W. Simultaneous and accurate screening of multiple genetically modified organism (GMO) components in food on the same test line of SERS-integrated lateral flow strip. Food Chem 2021; 366:130595. [PMID: 34298393 DOI: 10.1016/j.foodchem.2021.130595] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Revised: 06/14/2021] [Accepted: 07/11/2021] [Indexed: 01/17/2023]
Abstract
Herein, a surface-enhanced Raman scattering (SERS)-integrated LFS platform was developed for rapid and simultaneous screening of multiple genetically modified organism (GMO) components (promoter, codon, and terminator) in soybean. Research demonstrated that, on the same test line (T line) of single LFS, three different GMP components can be well distinguished with the help of three SERS nano tags. Good linear correlations between SERS signal and concentration of each GMO component were also obtained for quantitative analysis. Of greater importance, whether these multiple analytes coexisted or not, varied in the same concentration trend or not, these multiple GMP components can be rapidly (15 min) and accurately screened with satisfied sensitivity and specificity by decoding the signals on the same T line. We envision that this decoding platform can further improve the potential of LFS and SERS for practical applications and provide a promising alternative for multiple screening of GMO identification in food.
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Affiliation(s)
- Li Yao
- Engineering Research Center of Bioprocess, MOE, School of Food & Biological Engineering, Hefei University of Technology, Hefei 230009, China; Research Center for Biomedical and Health Science, School of Life and Health, Anhui Science & Technology University, Fengyang 233100, China
| | - Jianguo Xu
- Engineering Research Center of Bioprocess, MOE, School of Food & Biological Engineering, Hefei University of Technology, Hefei 230009, China
| | - Jigui Cheng
- Engineering Research Center of Bioprocess, MOE, School of Food & Biological Engineering, Hefei University of Technology, Hefei 230009, China
| | - Bangben Yao
- Engineering Research Center of Bioprocess, MOE, School of Food & Biological Engineering, Hefei University of Technology, Hefei 230009, China; Anhui Province Institute of Product Quality Supervision & Inspection, Hefei 230051, China
| | - Lei Zheng
- Engineering Research Center of Bioprocess, MOE, School of Food & Biological Engineering, Hefei University of Technology, Hefei 230009, China
| | - Guodong Liu
- Research Center for Biomedical and Health Science, School of Life and Health, Anhui Science & Technology University, Fengyang 233100, China.
| | - Wei Chen
- Engineering Research Center of Bioprocess, MOE, School of Food & Biological Engineering, Hefei University of Technology, Hefei 230009, China; Intelligent Manufacturing Institute of Hefei University of Technology, Hefei 230009, China.
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217
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Panferov VG, Byzova NA, Biketov SF, Zherdev AV, Dzantiev BB. Comparative Study of In Situ Techniques to Enlarge Gold Nanoparticles for Highly Sensitive Lateral Flow Immunoassay of SARS-CoV-2. BIOSENSORS-BASEL 2021; 11:bios11070229. [PMID: 34356700 PMCID: PMC8301938 DOI: 10.3390/bios11070229] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Revised: 07/02/2021] [Accepted: 07/06/2021] [Indexed: 11/21/2022]
Abstract
Three techniques were compared for lowering the limit of detection (LOD) of the lateral flow immunoassay (LFIA) of the receptor-binding domain of severe acute respiratory syndrome-related coronavirus 2 (SARS-CoV-2) based on the post-assay in situ enlargement of Au nanoparticles (Au NPs) on a test strip. Silver enhancement (growth of a silver layer over Au NPs—Au@Ag NPs) and gold enhancement (growth of a gold layer over Au NPs) techniques and the novel technique of galvanic replacement of Ag by Au in Au@Ag NPs causing the formation of Au@Ag-Au NPs were performed. All the enhancements were performed on-site after completion of the conventional LFIA and maintained equipment-free assay. The assays demonstrated lowering of LODs in the following rows: 488 pg/mL (conventional LFIA with Au NPs), 61 pg/mL (silver enhancement), 8 pg/mL (galvanic replacement), and 1 pg/mL (gold enhancement). Using gold enhancement as the optimal technique, the maximal dilution of inactivated SARS-CoV-2-containing samples increased 500 times. The developed LFIA provided highly sensitive and rapid (8 min) point-of-need testing.
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Affiliation(s)
- Vasily G. Panferov
- Research Center of Biotechnology of the Russian Academy of Sciences, A.N. Bach Institute of Biochemistry, 119071 Moscow, Russia; (V.G.P.); (N.A.B.); (A.V.Z.)
| | - Nadezhda A. Byzova
- Research Center of Biotechnology of the Russian Academy of Sciences, A.N. Bach Institute of Biochemistry, 119071 Moscow, Russia; (V.G.P.); (N.A.B.); (A.V.Z.)
| | - Sergey F. Biketov
- State Research Center for Applied Microbiology & Biotechnology, 142279 Obolensk, Moscow Region, Russia;
| | - Anatoly V. Zherdev
- Research Center of Biotechnology of the Russian Academy of Sciences, A.N. Bach Institute of Biochemistry, 119071 Moscow, Russia; (V.G.P.); (N.A.B.); (A.V.Z.)
| | - Boris B. Dzantiev
- Research Center of Biotechnology of the Russian Academy of Sciences, A.N. Bach Institute of Biochemistry, 119071 Moscow, Russia; (V.G.P.); (N.A.B.); (A.V.Z.)
- Correspondence:
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218
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Su L, Hu H, Tian Y, Jia C, Wang L, Zhang H, Wang J, Zhang D. Highly Sensitive Colorimetric/Surface-Enhanced Raman Spectroscopy Immunoassay Relying on a Metallic Core-Shell Au/Au Nanostar with Clenbuterol as a Target Analyte. Anal Chem 2021; 93:8362-8369. [PMID: 34077199 DOI: 10.1021/acs.analchem.1c01487] [Citation(s) in RCA: 56] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Lateral flow immunoassay (LFIA) has emerged as an effective technique in the field of food safety and environmental monitoring. However, sensitive and quantitative detection is still challenging for LFIAs in complex environments. In this work, a dual-model colorimetric/SERS lateral flow immunoassay for ultrasensitive determination of clenbuterol was constructed based on a metallic core-shell Au/Au nanostar acting as a multifunction tag. Raman reporter molecules are located between the core (AuNP) and shell (Au nanostar) to form a sandwich structure, which contributes to eliminate the environmental interference and improve the detection stability. In addition, the Au/Au nanostar provides a much higher Raman enhancement due to the presence of sharp tips and larger surface roughness in comparison with gold nanoparticles (AuNPs). Thus, on the basis of the antibody-antigen interaction, the dual-model immunoassay can produce strong colorimetric and surface-enhanced Raman spectroscopy (SERS) signals for highly sensitive detection of the target analyte, clenbuterol. Under optimal conditions, clenbuterol could be detected by the colorimetric model with a visual detection limit of 5 ng/mL. Meanwhile, the SERS signal of the Au/Au nanostar was accumulated on the test line for the SERS model detection with a quantitative detection limit as low as 0.05 ng/mL, which is at least 200-fold lower than that of the traditional AuNPs-based immunoassay. Furthermore, recovery rates of the proposed method in food samples were 86-110%. This dual-model immunoassay provides an effective tool for antibiotic residues analysis and demonstrates a broad potential for future applications in food safety monitoring.
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Affiliation(s)
- Lihong Su
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shanxi, 712100 China
| | - Huilan Hu
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shanxi, 712100 China
| | - Yanli Tian
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shanxi, 712100 China
| | - Conghui Jia
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shanxi, 712100 China
| | - Lulu Wang
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shanxi, 712100 China
| | - Han Zhang
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shanxi, 712100 China
| | - Jianlong Wang
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shanxi, 712100 China
| | - Daohong Zhang
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shanxi, 712100 China
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219
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Effective Diagnosis of Foot-And-Mouth Disease Virus (FMDV) Serotypes O and A Based on Optical and Electrochemical Dual-Modal Detection. Biomolecules 2021; 11:biom11060841. [PMID: 34198783 PMCID: PMC8229964 DOI: 10.3390/biom11060841] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Revised: 05/31/2021] [Accepted: 06/01/2021] [Indexed: 12/31/2022] Open
Abstract
Foot-and-mouth disease virus (FMDV) is a highly contagious disease that affects cloven-hoofed animals. The traditional diagnostic methods for FMDV have several drawbacks such as cross-reactivity, low sensitivity, and low selectivity. To overcome these drawbacks, we present an optical and electrochemical dual-modal approach for the specific detection of FMDV serotypes O and A by utilizing a magnetic nanoparticle labeling technique with resorufin β-d-glucopyranoside (res-β-glc) and β-glucosidase (β-glc), without the use of typical lateral flow assay or polymerase chain reaction. FMDV serotypes O and A were reacted with pan-FMDV antibodies that recognize all seven FMDV serotypes (O, A, C, Asia 1, SAT 1, SAT 2, and SAT 3). The antigen–antibody complex was then immobilized on magnetic nanoparticles and reacted with β-glc-conjugated FMDV type O or type A antibodies. Subsequently, the addition of res-β-glc resulted in the release of fluorescent resorufin and glucose owing to catalytic hydrolysis by β-glc. The detection limit of fluorescent signals using a fluorescence spectrophotometer was estimated to be log(6.7) and log(5.9) copies/mL for FMDV type O and A, respectively, while that of electrochemical signals using a glucometer was estimated to be log(6.9) and log(6.1) copies/mL for FMDV type O and A, respectively. Compared with a commercially available lateral flow assay diagnostic kit for immunochromatographic detection of FMDV type O and A, this dual-modal detection platform offers approximately four-fold greater sensitivity. This highly sensitive and accurate dual-modal detection method can be used for effective disease diagnosis and treatment, and will find application in the early-stage diagnosis of viral diseases and next-generation diagnostic platforms.
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220
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Yue H, Huang M, Tian T, Xiong E, Zhou X. Advances in Clustered, Regularly Interspaced Short Palindromic Repeats (CRISPR)-Based Diagnostic Assays Assisted by Micro/Nanotechnologies. ACS NANO 2021; 15:7848-7859. [PMID: 33961413 DOI: 10.1021/acsnano.1c02372] [Citation(s) in RCA: 55] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Clustered, regularly interspaced short palindromic repeats (CRISPR)-based diagnoses, derived from gene-editing technology, have been exploited for less than 5 years and are now reaching the stage of precommercial use. CRISPR tools have some notable features, such as recognition at physiological temperature, excellent specificity, and high-efficiency signal amplification capabilities. These characteristics are promising for the development of next-generation diagnostic technologies. In this Perspective, we present a detailed summary of which micro/nanotechnologies play roles in the advancement of CRISPR diagnosis and how they are involved. The use of nanoprobes, nanochips, and nanodevices, microfluidic technology, lateral flow strips, etc. in CRISPR detection systems has led to new opportunities for CRISPR-based diagnosis assay development, such as achieving equipment-free detection, providing more compact detection systems, and improving sensitivity and quantitative capabilities. Although tremendous progress has been made, CRISPR diagnosis has not yet reached its full potential. We discuss upcoming opportunities and improvements and how micro/nanotechnologies will continue to play key roles.
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Affiliation(s)
- Huahua Yue
- School of Life Sciences, South China Normal University, Guangzhou 510631, China
| | - Mengqi Huang
- School of Life Sciences, South China Normal University, Guangzhou 510631, China
| | - Tian Tian
- School of Life Sciences, South China Normal University, Guangzhou 510631, China
| | - Erhu Xiong
- School of Life Sciences, South China Normal University, Guangzhou 510631, China
| | - Xiaoming Zhou
- School of Life Sciences, South China Normal University, Guangzhou 510631, China
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221
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Strip modification and alternative architectures for signal amplification in nanoparticle-based lateral flow assays. Anal Bioanal Chem 2021; 413:4111-4117. [PMID: 34036400 DOI: 10.1007/s00216-021-03421-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2021] [Revised: 05/12/2021] [Accepted: 05/19/2021] [Indexed: 10/21/2022]
Abstract
Nanoparticle (NP)-based lateral flow assay (LFA) technology has outstanding characteristics that make it ideal for point-of-care bioanalytical applications. However, LFAs still have important limitations, especially related to sensitivity, which is in general worse than that of other well-established bioassays such as ELISA or PCR. Many efforts have been made for enhancing the sensitivity of LFAs, mainly actuating on the nanoparticle labels and on alternative optical detection modes. However, strip pads modification for such a purpose is an incipient vast field of research. This article gives a brief overview on the recent advances proposed for signal amplification actuating on different pads and the general architecture of the LFA strips. Such strategies offer universal tools that can be adapted to any LFA, independently of the kind of sample, analyte, and label. The principles of the different strategies developed to achieve novel signal amplification and sensitive detection are discussed, and some examples of relevant approaches are highlighted, together with future prospects and challenges.
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222
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Liu Y, Zhan L, Wang Y, Kangas J, Larkin D, Boulware DR, Bischof JC. Improved Influenza Diagnostics through Thermal Contrast Amplification. Diagnostics (Basel) 2021; 11:462. [PMID: 33800088 PMCID: PMC7999055 DOI: 10.3390/diagnostics11030462] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Revised: 03/05/2021] [Accepted: 03/05/2021] [Indexed: 12/24/2022] Open
Abstract
Influenza poses a serious health threat and creates an economic burden for people around the world. The accurate diagnosis of influenza is critical to the timely clinical treatment of patients and the control of outbreaks to protect public health. Commercially available rapid influenza diagnostic tests (RIDTs) that are operated by visual readout are widely used in clinics to screen influenza infections, but RIDTs suffer from imperfect analytical sensitivity, especially when the virus concentration in the sample is low. Fortunately, the sensitivity can be simply improved through an add-on signal amplification step, i.e., thermal contrast amplification (TCA). To demonstrate the advantage of TCA for influenza diagnosis, we conducted a prospective cohort study on 345 clinical specimens collected for influenza A and B testing during the 2017-2018 influenza season. All samples were tested using the Quidel QuickVue Influenza A + B test, followed by a TCA readout, and then confirmatory polymerase chain reaction testing. Through the TCA detecting sub-visual weak positives, TCA reading improved the overall influenza sensitivity by 53% for influenza A and 33% for influenza B over the visual RIDTs readings. Even though the specificity was compromised slightly by the TCA protocol (relative decrease of 0.09% for influenza A and 0.01% for influenza B), the overall performance was still better than that achieved by visual readout based on comparison of their plots in receiver operating characteristic space and F1 scores (relative increase of 14.5% for influenza A and 12.5% for influenza B). Performing a TCA readout on wet RIDTs also improved the overall TCA performance (relative increase in F1 score of 48%). Overall, the TCA method is a simple and promising way to improve the diagnostic performance of commercial RIDTs for infectious diseases, especially in the case of specimens with low target analytes.
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Affiliation(s)
- Yilin Liu
- Department of Mechanical Engineering, University of Minnesota, Twin Cities, Minneapolis, MN 55455, USA; (Y.L.); (L.Z.); (Y.W.); (J.K.)
| | - Li Zhan
- Department of Mechanical Engineering, University of Minnesota, Twin Cities, Minneapolis, MN 55455, USA; (Y.L.); (L.Z.); (Y.W.); (J.K.)
| | - Yiru Wang
- Department of Mechanical Engineering, University of Minnesota, Twin Cities, Minneapolis, MN 55455, USA; (Y.L.); (L.Z.); (Y.W.); (J.K.)
| | - Joseph Kangas
- Department of Mechanical Engineering, University of Minnesota, Twin Cities, Minneapolis, MN 55455, USA; (Y.L.); (L.Z.); (Y.W.); (J.K.)
| | - Daniel Larkin
- HealthEast Grand Avenue Clinic, St. Paul, MN 55105, USA;
| | - David R. Boulware
- Department of Medicine, Division of Infectious Diseases and International Medicine, University of Minnesota, Twin Cities, Minneapolis, MN 55455, USA;
| | - John C. Bischof
- Department of Mechanical Engineering, University of Minnesota, Twin Cities, Minneapolis, MN 55455, USA; (Y.L.); (L.Z.); (Y.W.); (J.K.)
- Department of Biomedical Engineering, University of Minnesota, Twin Cities, Minneapolis, MN 55455, USA
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223
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Tsuchiya T, Mizuno H, Fukuhara G. The factors that govern the allosteric chemical sensing of polythiophene chemosensors: scope and limitation toward signal-amplification sensing. RSC Adv 2021; 11:30472-30478. [PMID: 35493992 PMCID: PMC9041329 DOI: 10.1039/d1ra05795b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Accepted: 09/01/2021] [Indexed: 12/15/2022] Open
Abstract
The newly designed polythiophene chemosensors (PT1 and PT2) were synthesized via the Suzuki–Miyaura polymerization with appropriate yields. The photophysical properties of PTs thus obtained were examined by means of UV/vis, fluorescence, excitation spectroscopy, and time-correlated single-photon-counting method. The π–π* transitions around 400–600 nm and the emissions in the range of 400–650 nm were observed. The binding behavior of PTs was also investigated upon the interaction of tetrabutylammonium or tetrabutylphosphonium isophthalate, affording the binding constants (K) of 5790–8310 M−1, which were quite smaller than those observed in the corresponding repeating unit. The comprehensive analyses of the UV/vis data and theoretical calculation supports revealed the origins of scope and limitation toward signal-amplification sensing. The present results obtained herein will guide the development of new amplification chemosensors. The allosteric sensing of target guest molecules was drastically inhibited by introducing thiophene spacers in the polythiophene backbone, which is caused by the conformational relaxation.![]()
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Affiliation(s)
- Tomoaki Tsuchiya
- Department of Chemistry, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8551, Japan
| | - Hiroaki Mizuno
- Department of Chemistry, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8551, Japan
| | - Gaku Fukuhara
- Department of Chemistry, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8551, Japan
- JST, PRESTO, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
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