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Li J, Yang H, Cai R, Tan W. Novel Nucleic Acid-Assisted Ion-Responsive ECL Biosensor Based on Hollow AuAg Nanoboxes with Excellent SPR and Effective Coreaction Acceleration. Anal Chem 2024; 96:11076-11082. [PMID: 38934238 DOI: 10.1021/acs.analchem.4c02231] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/28/2024]
Abstract
Novel hollow AuAg nanoboxes (AuAg NBs) were designed for an innovative electrochemiluminescence (ECL) sensor to ultrasensitively detect Pb2+ and Hg2+ with the aid of DNAzyme and "thymine-Hg2+-thymine" ("T-Hg2+-T") structure. AuAg NBs are employed as an excellent surface plasma resonance (SPR) source, as well as an effective coreaction accelerator for the CoNi NFs/S2O82- system to greatly improve ECL performance. To detect Pb2+, the DNAzyme catalyzes the cleavage of ribonucleic acid targets into numerous small nucleic acid fragments, leading to an ECL signal. When Hg2+ is added, the thymine-thymine (T-T) mismatches of the Hg2+ aptamer bind Hg2+ to form the "T-Hg2+-T" structure, which not only inhibits the SPR process but also produces a large steric hindrance, thus quenching the ECL signal and allowing quantification of Hg2+. The novel ECL sensor quantifies Pb2+ in the range of 0.1 fM to 0.1 μM with a limit of detection of 0.07 fM and Hg2+ in the range of 10 pM to 1 μM with a LOD of 4.07 pM.
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Affiliation(s)
- Jingxian Li
- Molecular Science and Biomedicine Laboratory, State Key Laboratory for Chemo/Bio-Sensing and Chemometrics, College of Material Science and Engineering, College of Chemistry and Chemical Engineering, College of Biology, Hunan University, Changsha 410082, China
| | - Hongfen Yang
- Hunan Key Laboratory of Typical Environmental Pollution and Health Hazards, School of Public Health, Hengyang Medical School, University of South China, Hengyang 421001, China
| | - Ren Cai
- Molecular Science and Biomedicine Laboratory, State Key Laboratory for Chemo/Bio-Sensing and Chemometrics, College of Material Science and Engineering, College of Chemistry and Chemical Engineering, College of Biology, Hunan University, Changsha 410082, China
| | - Weihong Tan
- Molecular Science and Biomedicine Laboratory, State Key Laboratory for Chemo/Bio-Sensing and Chemometrics, College of Material Science and Engineering, College of Chemistry and Chemical Engineering, College of Biology, Hunan University, Changsha 410082, China
- The Cancer Hospital of the University of Chinese Academy of Sciences (Zhejiang Cancer Hospital), Institute of Hangzhou Medicine, Chinese Academy of Sciences, Hangzhou, Zhejiang 310022, China
- Institute of Molecular Medicine, Renji Hospital, Shanghai Jiao Tong University School of Medicine, and College of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
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2
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Li J, Chu LT, Hartanto H, Guo G, Liu L, Wu J, Wu M, Cui C, Wang G, Liu W, Kwong HK, Wu S, Chen TH. Microfluidic particle counter visualizing mucosal antibodies against SARS-CoV-2 in the upper respiratory tract for rapid evaluation of immune protection. LAB ON A CHIP 2024; 24:2658-2668. [PMID: 38660972 DOI: 10.1039/d4lc00118d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/26/2024]
Abstract
Mucosal antibodies in the upper respiratory tract are the earliest and most critical responders to prevent respiratory infections, providing an indication for the rapid evaluation of immune protection. Here, we report a microfluidic particle counter that directly visualizes mucosal antibody levels in nasal mucus. The mucosal anti-SARS-CoV-2 spike receptor binding domain (RBD) antibodies in nasal secretions first react with magnetic microparticles (MMPs) and polystyrene microparticles (PMPs) that are surface-modified to form a "MMPs-anti-spike RBD IgG-PMPs" complex when RBD is present. After magnetic separation and loading into the microfluidic particle counter, the free PMPs, which are reduced with increasing anti-spike RBD IgG antibody levels, are trapped by a microfluidic particle dam and accumulate in the trapping channel. A sensitive mode [limit of detection (LOD): 14.0 ng mL-1; sample-to-answer time: 70 min] and an equipment-free rapid mode (LOD: 37.4 ng mL-1; sample-to-answer time: 20 min) were achieved. Eighty-seven nasal secretion (NS) samples from vaccinees were analyzed using our microfluidic particle counter, and the results closely resemble those of the gold-standard enzyme-linked immunosorbent assay (ELISA). The analysis shows that higher antibody levels were found in convalescent volunteers compared to noninfected volunteers. Together, we demonstrate a rapid kit that directly indicates immune status, which can guide vaccine strategy for individuals and the government.
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Affiliation(s)
- Jiaheng Li
- Department of Biomedical Engineering, City University of Hong Kong, Kowloon, Hong Kong, SAR, China.
| | - Lok Ting Chu
- Department of Chemistry and Molecular Biology, School of Basic Medical Sciences, Guang Dong Medical University, Zhanjiang, China
| | - Hogi Hartanto
- Department of Biomedical Engineering, City University of Hong Kong, Kowloon, Hong Kong, SAR, China.
| | - Guihuan Guo
- Department of Biomedical Engineering, City University of Hong Kong, Kowloon, Hong Kong, SAR, China.
| | - Lu Liu
- Department of Biomedical Engineering, City University of Hong Kong, Kowloon, Hong Kong, SAR, China.
| | - Jianpeng Wu
- Department of Biomedical Engineering, City University of Hong Kong, Kowloon, Hong Kong, SAR, China.
| | - Minghui Wu
- Department of Biomedical Engineering, City University of Hong Kong, Kowloon, Hong Kong, SAR, China.
| | - Chenyu Cui
- Department of Biomedical Engineering, City University of Hong Kong, Kowloon, Hong Kong, SAR, China.
- Hong Kong Centre for Cerebro-Cardiovascular Health Engineering, Hong Kong Science Park, Hong Kong, SAR, China
| | - Gaobo Wang
- Department of Biomedical Engineering, City University of Hong Kong, Kowloon, Hong Kong, SAR, China.
| | - Wengang Liu
- Department of Biomedical Engineering, City University of Hong Kong, Kowloon, Hong Kong, SAR, China.
| | - Hoi Kwan Kwong
- Department of Biomedical Engineering, City University of Hong Kong, Kowloon, Hong Kong, SAR, China.
| | - Siying Wu
- Department of Biomedical Engineering, City University of Hong Kong, Kowloon, Hong Kong, SAR, China.
| | - Ting-Hsuan Chen
- Department of Biomedical Engineering, City University of Hong Kong, Kowloon, Hong Kong, SAR, China.
- City University of Hong Kong Shenzhen Research Institute, Shenzhen, China
- Hong Kong Centre for Cerebro-Cardiovascular Health Engineering, Hong Kong Science Park, Hong Kong, SAR, China
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3
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Teng W, Li Q, Zhao J, Shi P, Zhang J, Yan M, Zhang S. A novel dual-mode aptasensor based on a multiple amplification system for ultrasensitive detection of lead ions using fluorescence and surface-enhanced Raman spectroscopy. Analyst 2024; 149:1817-1824. [PMID: 38345074 DOI: 10.1039/d3an02245e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/12/2024]
Abstract
In this work, we develop a dual recycling amplification aptasensor for sensitive and rapid detection of lead ions (Pb2+) using fluorescence and surface-enhanced Raman scattering (FL-SERS). The aptasensor allows targeted cleavage of substrates through specifically binding with the Pb2+-dependent aptamer (M-PS2.M). Ultrasensitive detection of trace Pb2+ has been achieved using an enzyme-free nonlinear hybridization chain reaction (HCR) and the FL-SERS technique. The lower limit of detection (LOD = 3σ/k) is 0.115 pM in FL mode and 1.261 fM in SERS mode. The aptasensor is characterized by high reliability and specificity, among other things, to distinguish Pb2+ from other metal ions. In addition, the aptasensor can detect Pb2+ in actual water with good recovery. Compared with the single-mode aptasensor, the dual-mode aptasensor is characterized by high reliability, an extensive detection range, and high specificity.
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Affiliation(s)
- Wanqing Teng
- School of Chemistry and Chemical Engineering, University of Jinan, Jinan, 250022, PR China.
- Shandong Provincial Key Laboratory of Detection Technology for Tumor Markers, School of Chemistry and Chemical Engineering, Linyi University, Linyi 276000, Shandong, PR China.
| | - Qi Li
- Shandong Provincial Key Laboratory of Detection Technology for Tumor Markers, School of Chemistry and Chemical Engineering, Linyi University, Linyi 276000, Shandong, PR China.
| | - Jing Zhao
- Shandong Provincial Key Laboratory of Detection Technology for Tumor Markers, School of Chemistry and Chemical Engineering, Linyi University, Linyi 276000, Shandong, PR China.
| | - Pengfei Shi
- Shandong Provincial Key Laboratory of Detection Technology for Tumor Markers, School of Chemistry and Chemical Engineering, Linyi University, Linyi 276000, Shandong, PR China.
| | - Jing Zhang
- School of Chemistry and Chemical Engineering, University of Jinan, Jinan, 250022, PR China.
| | - Mei Yan
- School of Chemistry and Chemical Engineering, University of Jinan, Jinan, 250022, PR China.
| | - Shusheng Zhang
- School of Chemistry and Chemical Engineering, University of Jinan, Jinan, 250022, PR China.
- Shandong Provincial Key Laboratory of Detection Technology for Tumor Markers, School of Chemistry and Chemical Engineering, Linyi University, Linyi 276000, Shandong, PR China.
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4
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Aryal P, Hefner C, Martinez B, Henry CS. Microfluidics in environmental analysis: advancements, challenges, and future prospects for rapid and efficient monitoring. LAB ON A CHIP 2024; 24:1175-1206. [PMID: 38165815 DOI: 10.1039/d3lc00871a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/04/2024]
Abstract
Microfluidic devices have emerged as advantageous tools for detecting environmental contaminants due to their portability, ease of use, cost-effectiveness, and rapid response capabilities. These devices have wide-ranging applications in environmental monitoring of air, water, and soil matrices, and have also been applied to agricultural monitoring. Although several previous reviews have explored microfluidic devices' utility, this paper presents an up-to-date account of the latest advancements in this field for environmental monitoring, looking back at the past five years. In this review, we discuss devices for prominent contaminants such as heavy metals, pesticides, nutrients, microorganisms, per- and polyfluoroalkyl substances (PFAS), etc. We cover numerous detection methods (electrochemical, colorimetric, fluorescent, etc.) and critically assess the current state of microfluidic devices for environmental monitoring, highlighting both their successes and limitations. Moreover, we propose potential strategies to mitigate these limitations and offer valuable insights into future research and development directions.
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Affiliation(s)
- Prakash Aryal
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523, USA.
| | - Claire Hefner
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523, USA.
| | - Brandaise Martinez
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523, USA.
| | - Charles S Henry
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523, USA.
- Department of Chemical and Biological Engineering, Colorado State University, Fort Collins, Colorado 80523, USA
- School of Biomedical Engineering, Colorado State University, Fort Collins, Colorado 80523, USA
- Metallurgy and Materials Science Research Institute, Chulalongkorn University, Bangkok 10330, Thailand
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5
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Wen J, Deng H, He D, Yuan Y. Dual-functional DNAzyme powered CRISPR-Cas12a sensor for ultrasensitive and high-throughput detection of Pb 2+ in freshwater. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 911:168708. [PMID: 37992834 DOI: 10.1016/j.scitotenv.2023.168708] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2023] [Revised: 11/17/2023] [Accepted: 11/17/2023] [Indexed: 11/24/2023]
Abstract
Freshwater lead pollution has posed severe threat to the environment and human health, underscoring the urgent necessity for accurate and user-friendly detection methods. Herein, we introduce a novel Clustered Regularly Interspaced Short Palindromic Repeats (CRISPR-Cas) sensor for highly sensitive Pb2+ detection. To accomplish this, we designed a dual-functional deoxyribozyme (df-DNAzyme) probe that functions as an activator for the CRISPR-Cas12a system while also recognizing Pb2+. The df-DNAzyme probe was subsequently combined with gold nanoparticles (AuNPs) to fabricate a DNAzyme/AuNP nanoprobe, facilitating the activation of CRISPR-Cas12a in a one-to-multiple manner. Upon exposure to Pb2+, the df-DNAzyme is cleaved, causing disintegration of the DNAzyme/AuNP nanoprobe from magnetic beads. The degraded DNAzyme/AuNP containing multiple double-stranded DNA activators efficiently triggers CRISPR-Cas12a activity, initiating cleavage of fluorescence-quenched reporter DNA and generating amplified signals accordingly. The amplified fluorescence signal is accurately quantified using a quantitative polymerase chain reaction (qPCR) instrument capable of measuring 96 or 384 samples simultaneously at the microliter scale. This technique demonstrates ultra-sensitive detection capability for Pb2+ at concentrations as low as 1 pg/L within a range from 1 pg/L to 10 μg/L, surpassing limits set by World Health Organization (WHO) and United States Environmental Protection Agency (US EPA) guidelines. This study offers an ultrasensitive and high-throughput method for the detection of Pb2+ in freshwater, thereby advancing a novel approach towards the development of precise and convenient techniques for detecting harmful contaminants.
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Affiliation(s)
- Junlin Wen
- Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China.
| | - Hongjie Deng
- Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China
| | - Daigui He
- Guangdong Mechanical & Electrical Polytechnic, Guangzhou 510550, China
| | - Yong Yuan
- Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China.
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Tang H, Chang W, Xue H, Xu C, Li Z, Liu H, Xing C, Liu G, Liu X, Wang H, Wang J. Engineered DNA molecular machine for ultrasensitive detection of environmental lead pollution. JOURNAL OF HAZARDOUS MATERIALS 2023; 459:132306. [PMID: 37597388 DOI: 10.1016/j.jhazmat.2023.132306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Revised: 08/02/2023] [Accepted: 08/13/2023] [Indexed: 08/21/2023]
Abstract
Dynamic monitoring of environmental Pb2+ is of utmost importance for food safety and personal well-being. Herein, we report a novel, rapid, and practical fluorescence detection platform for Pb2+. The platform comprises two essential components: an engineered DNAzyme probe (EDP) and a responsive functionalized probe (RFP). The EDP demonstrates specific recognition of Pb2+ and the subsequent release of free DNA fragments. The released DNA fragments are then captured using the RFP to form DNA complexes, which undergo multiple cascade amplification reactions involving polymerases and nickases, resulting in the generation of a large number of fluorescence signals. These signals can detect Pb2+ at concentrations as low as 0.114 nmol/L, with a dynamic range spanning from 0.1 nmol/L to 50 nmol/L. Moreover, the platform exhibits excellent sensitivity and selectivity for Pb2+ detection. To further validate its effectiveness, we successfully quantitatively detected lead contamination in water from Chaohu Lake, and the results aligned closely with those obtained using inductively coupled plasma-mass spectrometry (ICP-MS). Moreover, this platform is suitable for detecting Pb2+ in seawater, soil, and fish samples. These findings confirm the suitability of the current detection platform for the dynamic assessment of Pb contamination in ecological environments, thereby contributing to environmental and food safety.
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Affiliation(s)
- Hehe Tang
- Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, School of Pharmacy, School of Public Health, Anhui Medical University, Hefei 230032, PR China
| | - Wei Chang
- Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, School of Pharmacy, School of Public Health, Anhui Medical University, Hefei 230032, PR China; Department of Toxicology, Key laboratory of environmental toxicology of anhui higher education institutes, School of Public Health, Anhui Medical University, Hefei 230032, PR China
| | - Huijie Xue
- Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, School of Pharmacy, School of Public Health, Anhui Medical University, Hefei 230032, PR China
| | - Changlu Xu
- School of Dentistry, University of California, Los Angeles, USA
| | - Zhi Li
- School of Dentistry, University of California, Los Angeles, USA
| | - Hao Liu
- School of Pharmacy, Bengbu Medical College, Bengbu 233000, PR China
| | - Chao Xing
- Fujian Key Laboratory of Functional Marine Sensing Materials, Minjiang University, Fujian 350000, PR China
| | - Gang Liu
- Environmental Monitoring Station, Authority Bureau of Lake Chaohu, Chaohu 238000, PR China
| | - Xiaoyan Liu
- Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, School of Pharmacy, School of Public Health, Anhui Medical University, Hefei 230032, PR China.
| | - Hua Wang
- Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, School of Pharmacy, School of Public Health, Anhui Medical University, Hefei 230032, PR China; Department of Toxicology, Key laboratory of environmental toxicology of anhui higher education institutes, School of Public Health, Anhui Medical University, Hefei 230032, PR China.
| | - Jie Wang
- Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, School of Pharmacy, School of Public Health, Anhui Medical University, Hefei 230032, PR China; Department of Toxicology, Key laboratory of environmental toxicology of anhui higher education institutes, School of Public Health, Anhui Medical University, Hefei 230032, PR China.
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7
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Li J, Qi Y, Yang R, Chen X, Chen Z, Zhu JJ. Intellectualized Visualization of Single-Particle Raman Spectra for Sensitive Detection and Simultaneous Multianalysis of Heavy Metal Ions. Anal Chem 2023; 95:14736-14745. [PMID: 37737121 DOI: 10.1021/acs.analchem.3c02851] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/23/2023]
Abstract
Easy-to-use, reliable, and real-time methods for detecting heavy metal ion contamination are urgently required, which is a primary concern for water pollution control and human health. However, present methods for this aim are still unable to achieve simultaneous multianalysis for complex real sample detection. Herein, an intellectualized vision-based single-nanoparticle Raman imaging strategy combined with ion-responsive functional nucleic acids (FNAs) was proposed to address these issues. We reported a correspondence between the concentration of the analytes and the density of particles (DOP) of specifically captured nanoparticles to achieve sensitive detection and simultaneous multianalysis of heavy metal ions. The specific detection of Pb2+ (Hg2+) was obtained with a detection linear range from 100 pM to 100 nM (from 500 fM to 100 nM) and limit of detections low to 1 pM (100 fM), with the advantages of good specificity, excellent homogeneity, and reproducibility. Furthermore, the differentiation of different heavy metal ions (Pb2+/Hg2+) was achieved, i.e., the simultaneous multianalysis, based on Raman imaging of the single particle and intelligent machine vision method. Finally, the Raman imaging assay was utilized for real sample analysis, and it provided a powerful and reliable tool for detecting trace Pb2+/Hg2+ in real water samples and facilitated the portable on-site monitoring of heavy metal ions.
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Affiliation(s)
- Jinxiang Li
- School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, People's Republic of China
| | - Yongbing Qi
- School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, People's Republic of China
| | - Ruixin Yang
- School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, People's Republic of China
| | - Xueqin Chen
- School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, People's Republic of China
| | - Zixuan Chen
- School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, People's Republic of China
| | - Jun-Jie Zhu
- School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, People's Republic of China
- Shenzhen Research Institute of Nanjing University, Shenzhen 518000, People's Republic of China
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8
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Yue Y, Wang S, Jin Q, An N, Wu L, Huang H. A triple amplification strategy using GR-5 DNAzyme as a signal medium for ultrasensitive detection of trace Pb 2+ based on CRISPR/Cas12a empowered electrochemical biosensor. Anal Chim Acta 2023; 1263:341241. [PMID: 37225346 DOI: 10.1016/j.aca.2023.341241] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Revised: 04/10/2023] [Accepted: 04/19/2023] [Indexed: 05/26/2023]
Abstract
Lead ions (Pb2+) are a well-known toxic heavy metal that poses a significant threat to human health. Therefore, the development of a simple and ultrasensitive technique for detecting Pb2+ is essential. With their trans-cleavage properties, the newly discovered CRISPR-V effectors have become a potential high-precision biometric tool. In this regard, a CRISPR/Cas12a-based electrochemical biosensor (E-CRISPR) has been developed, which is combined with the GR-5 DNAzyme that can specifically recognize Pb2+. In this strategy, the GR-5 DNAzyme acts as a signal-mediated intermediary, which can convert Pb2+ into nucleic acid signals, thereby becoming single-stranded DNA that triggers strand displacement amplification (SDA) reaction. This is coupled with following activated CRISPR/Cas12a cleavage of the electrochemical signal probe, enabling cooperative signal amplification for ultrasensitive Pb2+ detection. The proposed method has a detection limit as low as 0.02 pM. Therefore, we have developed an E-CRISPR detection platform with GR-5 DNAzyme as a signal medium (called SM-E-CRISPR biosensor). This provides a method for the CRISPR system to specifically detect non-nucleic substances by converting the signal using a medium.
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Affiliation(s)
- Yuanyuan Yue
- School of Food Science and Pharmaceutical Engineering, Nanjing Normal University, Nanjing, 210023, China
| | - Songtao Wang
- National Engineering Research Center of Solid-state Brewing, Luzhou, 646000, China
| | - Qiang Jin
- Nantong Cigarette Filter Co., Ltd., Nantong, Jiangsu, 226014, China
| | - Nan An
- School of Food Science and Pharmaceutical Engineering, Nanjing Normal University, Nanjing, 210023, China
| | - Lina Wu
- School of Food Science and Pharmaceutical Engineering, Nanjing Normal University, Nanjing, 210023, China; The Key Research Project of Zhejiang Laboratory, China.
| | - He Huang
- School of Food Science and Pharmaceutical Engineering, Nanjing Normal University, Nanjing, 210023, China; Food Laboratory of Zhongyuan, Luohe, 462300, Henan, China.
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9
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Srinivasan S, Ranganathan V, McConnell EM, Murari BM, DeRosa MC. Aptamer-based colorimetric and lateral flow assay approaches for the detection of toxic metal ions, thallium(i) and lead(ii). RSC Adv 2023; 13:20040-20049. [PMID: 37409036 PMCID: PMC10318611 DOI: 10.1039/d3ra01658g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Accepted: 06/14/2023] [Indexed: 07/07/2023] Open
Abstract
Thallium(i) and lead(ii) ions are heavy metals and extremely toxic. These metals are environmental pollutants, posing a severe risk to the environment and human health. In this study, two approaches were examined using aptamer and nanomaterial-based conjugates for thallium and lead detection. The first approach utilized an in-solution adsorption-desorption approach to develop colorimetric aptasensors for the detection of thallium(i) and lead(ii) using gold or silver nanoparticles. The second approach was the development of lateral flow assays, and their performance was tested with thallium (limit of detection is 7.4 μM) and lead ion (limit of detection is 6.6 nM) spiked into real samples. The approaches assessed are rapid, inexpensive, and time efficient with the potential to become the basis for future biosensor devices.
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Affiliation(s)
- Sathya Srinivasan
- Department of Chemistry, Carleton University 1125 Colonel By Drive Ottawa ON K1S 5B6 Canada +1-613-520-2600 ext. 4388
- Department of Biotechnology, School of Bioscience and Technology VIT Vellore 632 104 TN India
| | - Velu Ranganathan
- Department of Chemistry, Carleton University 1125 Colonel By Drive Ottawa ON K1S 5B6 Canada +1-613-520-2600 ext. 4388
| | - Erin M McConnell
- Department of Chemistry, Carleton University 1125 Colonel By Drive Ottawa ON K1S 5B6 Canada +1-613-520-2600 ext. 4388
| | - Bhaskar Mohan Murari
- Department of Sensor and Biomedical Technology, School of Electronics Engineering VIT Vellore 632 104 TN India
| | - Maria C DeRosa
- Department of Chemistry, Carleton University 1125 Colonel By Drive Ottawa ON K1S 5B6 Canada +1-613-520-2600 ext. 4388
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10
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Wang G, Li J, Wu S, Jiang T, Chen TH. A Fully Integrated, Ready-to-Use Distance-Based Chemosensor for Visual Quantification of Multiple Heavy Metal Ions. Anal Chem 2022; 94:15925-15929. [DOI: 10.1021/acs.analchem.2c04712] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Gaobo Wang
- Department of Biomedical Engineering, City University of Hong Kong, Hong Kong Special Administrative Region999077, China
| | - Jiaheng Li
- Department of Biomedical Engineering, City University of Hong Kong, Hong Kong Special Administrative Region999077, China
| | - Siying Wu
- Department of Biomedical Engineering, City University of Hong Kong, Hong Kong Special Administrative Region999077, China
| | - Tianyi Jiang
- School of Mechatronics Engineering, Harbin Institute of Technology, 150001Harbin, Heilongjiang, China
| | - Ting-Hsuan Chen
- Department of Biomedical Engineering, City University of Hong Kong, Hong Kong Special Administrative Region999077, China
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11
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Hu K, Qin L, Ren X, Guo Z, Wang S, Hu Y. Deoxyribonucleic acid-guided dual-mode electro-chemical/chemiluminescent platform for sensitive and selective examination of Pb2+. J Electroanal Chem (Lausanne) 2022. [DOI: 10.1016/j.jelechem.2022.116757] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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12
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Wu M, Wu S, Wang G, Liu W, Chu LT, Jiang T, Kwong HK, Chow HL, Li IWS, Chen TH. Microfluidic particle dam for direct visualization of SARS-CoV-2 antibody levels in COVID-19 vaccinees. SCIENCE ADVANCES 2022; 8:eabn6064. [PMID: 35658040 PMCID: PMC9166397 DOI: 10.1126/sciadv.abn6064] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
Various COVID-19 vaccines are currently deployed, but their immunization varies and decays with time. Antibody level is a potent correlate to immune protection, but its quantitation relies on intensive laboratory techniques. Here, we report a decentralized, instrument-free microfluidic device that directly visualizes SARS-CoV-2 antibody levels. Magnetic microparticles (MMPs) and polystyrene microparticles (PMPs) can bind to SARS-CoV-2 antibodies simultaneously. In a microfluidic chip, this binding reduces the incidence of free PMPs escaping from magnetic separation and shortens PMP accumulation length at a particle dam. This visual quantitative result enables use in either sensitive mode [limit of detection (LOD): 13.3 ng/ml; sample-to-answer time: 70 min] or rapid mode (LOD: 57.8 ng/ml; sample-to-answer time: 20 min) and closely agrees with the gold standard enzyme-linked immunosorbent assay. Trials on 91 vaccinees revealed higher antibody levels in mRNA vaccinees than in inactivated vaccinees and their decay in 45 days, demonstrating the need for point-of-care devices to monitor immune protection.
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Affiliation(s)
- Minghui Wu
- Department of Biomedical Engineering, City University of Hong Kong, Hong Kong Special Administrative Region, China
| | - Siying Wu
- Department of Biomedical Engineering, City University of Hong Kong, Hong Kong Special Administrative Region, China
| | - Gaobo Wang
- Department of Biomedical Engineering, City University of Hong Kong, Hong Kong Special Administrative Region, China
| | - Wengang Liu
- Department of Biomedical Engineering, City University of Hong Kong, Hong Kong Special Administrative Region, China
| | - Lok Ting Chu
- Department of Biomedical Engineering, City University of Hong Kong, Hong Kong Special Administrative Region, China
| | - Tianyi Jiang
- Department of Biomedical Engineering, City University of Hong Kong, Hong Kong Special Administrative Region, China
| | - Hoi Kwan Kwong
- Department of Biomedical Engineering, City University of Hong Kong, Hong Kong Special Administrative Region, China
| | - Hiu Lam Chow
- Department of Biomedical Engineering, City University of Hong Kong, Hong Kong Special Administrative Region, China
| | - Iris Wai Sum Li
- HKU-Pasteur Research Pole, The University of Hong Kong, Pokfulam, Hong Kong Special Administrative Region, China
| | - Ting-Hsuan Chen
- Department of Biomedical Engineering, City University of Hong Kong, Hong Kong Special Administrative Region, China
- City University of Hong Kong Shenzhen Research Institute, Shenzhen, China
- Corresponding author.
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13
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Li YY, Li HD, Fang WK, Liu D, Liu MH, Zheng MQ, Zhang LL, Yu H, Tang HW. Amplification of the Fluorescence Signal with Clustered Regularly Interspaced Short Palindromic Repeats-Cas12a Based on Au Nanoparticle-DNAzyme Probe and On-Site Detection of Pb 2+ Via the Photonic Crystal Chip. ACS Sens 2022; 7:1572-1580. [PMID: 35482449 DOI: 10.1021/acssensors.2c00516] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Although great headway has been made in DNAzyme-based detection of Pb2+, its adaptability, sensitivity, and accessibility in complex media still need to be improved. For this, we introduce new ways to surmount these hurdles. First, a spherical nucleic acid (SNA) fluorescence probe (Au nanoparticles-DNAzyme probe) is utilized to specifically identify Pb2+ and its suitability for precise detection of Pb2+ in complex samples due to its excellent nuclease resistance. Second, the sensitivity of Pb2+ detection is greatly enhanced via the use of a clustered regularly interspaced short palindromic repeats-Cas12a with target recognition accuracy to amplify the fluorescent signal upon the trans cleavage of the SNA (signal probe), and the limit of detection reaches as low as 86 fM. Third, we boost the fluorescence on photonic crystal chips with a bionic periodic arrangement by employing a straightforward detection device (smartphone and portable UV lamp) to achieve on-site detection of Pb2+ with the limit of detection as low as 24 pM. Based on the abovementioned efforts, the modified Pb2+ fluorescence sensor has the advantages of higher sensitivity, better specificity, accessibility, less sample consumption, and so forth. Moreover, it can be applied to accurately detect Pb2+ in complex biological or environmental samples, which is of great promise for widespread applications.
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Affiliation(s)
- Yu-Yao Li
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, People’s Republic of China
| | - Hao-Dong Li
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Sichuan Agricultural University, Chengdu 611130, People’s Republic of China
| | - Wen-Kai Fang
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, People’s Republic of China
| | - Da Liu
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, People’s Republic of China
| | - Meng-Han Liu
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, People’s Republic of China
| | - Ming-Qiu Zheng
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, People’s Republic of China
| | - Li-Ling Zhang
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, People’s Republic of China
| | - He Yu
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, People’s Republic of China
| | - Hong-Wu Tang
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, People’s Republic of China
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14
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Xu J, Liu M, Zhao W, Wang S, Gui M, Li H, Yu R. DNAzyme-based cascade signal amplification strategy for highly sensitive detection of lead ions in the environment. JOURNAL OF HAZARDOUS MATERIALS 2022; 429:128347. [PMID: 35101754 DOI: 10.1016/j.jhazmat.2022.128347] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Revised: 01/12/2022] [Accepted: 01/22/2022] [Indexed: 06/14/2023]
Abstract
Lead ions are one of many common environmental pollutants, that can cause posing a serious threat to people's health, thus, their efficient and sensitive detection is important. We propose a cascade signal amplification sensor using a DNAzyme-based strand displacement amplification (SDA) and hybridization chain reaction (HCR) for the high-sensitivity detection of Pb2+. In the demonstrated sensor system, the target metal ion can activate DNAzyme to cause a strand displacement reaction. Under the synergistic action of polymerase and nickase, large numbers of DNA strands are generated that can initiate HCR. The subsequent HCR can restore the fluorescence intensity of the FAM quenched for the fluorescence resonance energy transfer effect, which exhibits a strong fluorescence signal. The DNAzyme-based sensor allowed the detection of Pb2+ down to 16.8 pM and resulted in a good dynamic line relationship ranging from 50 pM to 500 nM, and the biosensor also showed good selectivity. Furthermore, we confirmed that the proposed sensor can still detect lead ions in complex environments such as lake water, milk, and serum. We believe these findings will provide new ideas for the detection of toxic elements ions in the environment and food.
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Affiliation(s)
- Jiamin Xu
- Jiangxi Normal University, Nanchang 330022, PR China
| | - Mingbin Liu
- Jiangxi Normal University, Nanchang 330022, PR China
| | - Weihua Zhao
- Jiangxi Normal University, Nanchang 330022, PR China
| | - Suqin Wang
- Jiangxi Normal University, Nanchang 330022, PR China.
| | - Minfang Gui
- Jiangxi Normal University, Nanchang 330022, PR China
| | - Hongbo Li
- Jiangxi Normal University, Nanchang 330022, PR China; Institute of Functional Nano & Soft Materials (FUNSOM), Soochow University, Suzhou 215123, PR China; State Key Laboratory for Chemo/Biosensing and Chemometrics, Hunan University, Changsha 410082, PR China.
| | - Ruqin Yu
- State Key Laboratory for Chemo/Biosensing and Chemometrics, Hunan University, Changsha 410082, PR China.
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15
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Li C, Wang Z, Jiang Z. Ferrocene-Doped Polystyrene Nanoenzyme and DNAzyme Cocatalytic SERS Quantitative Assay of Ultratrace Pb2+. NANOMATERIALS 2022; 12:nano12081243. [PMID: 35457951 PMCID: PMC9027246 DOI: 10.3390/nano12081243] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Revised: 03/31/2022] [Accepted: 04/03/2022] [Indexed: 12/02/2022]
Abstract
A new, stable and high-catalytic activity ferrocene-doped polystyrene nanosphere (PNFer) sol was prepared by the hydrogel procedure and characterized by electron microscopy and molecular spectroscopy. Results show that the nanosol exhibits excellent catalysis of the new indicator nanoreaction between AgNO3 and sodium formate to generate nanosilver with strong surface-enhanced Raman scattering (SERS), resonance Rayleigh scattering (RRS) and surface plasmon resonance absorption (Abs) trimode molecular spectral signals. This new nanocatalytic amplification trimode indicator reaction was coupled with the G-quadruplex DNAzyme catalytic amplification of Pb2+ aptamer to fabricate a new SERS quantitative/RRS/Abs assay platform for the determination of ultratrace amounts of Pb2+. The Pb2+ content in water samples was analyzed with satisfactory results.
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Affiliation(s)
- Chongning Li
- School of Public Health, Guilin Medical University, Guilin 541199, China; (C.L.); (Z.W.)
- Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guilin 541006, China
| | - Zhenghong Wang
- School of Public Health, Guilin Medical University, Guilin 541199, China; (C.L.); (Z.W.)
- Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guilin 541006, China
| | - Zhiliang Jiang
- Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guilin 541006, China
- Correspondence:
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16
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Recent advances in the construction of functional nucleic acids with isothermal amplification for heavy metal ions sensor. Microchem J 2022. [DOI: 10.1016/j.microc.2021.107077] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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17
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Zhao Y, Yavari K, Wang Y, Pi K, Van Cappellen P, Liu J. Deployment of functional DNA-based biosensors for environmental water analysis. Trends Analyt Chem 2022. [DOI: 10.1016/j.trac.2022.116639] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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18
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Tannic Acid-Capped Gold Nanoparticles as a Novel Nanozyme for Colorimetric Determination of Pb2+ Ions. CHEMOSENSORS 2021. [DOI: 10.3390/chemosensors9120332] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
In this study, tannic acid-modified gold nanoparticles were found to have superior nanozyme activity and catalyze the oxidation reaction of 3,3′,5,5′-tetramethylbenzidine in the presence of hydrogen peroxide. Enhancing the catalytic activity of the nanozyme by Pb2+ ions caused by selectively binding metal ions by the tannic acid-capped surface of gold nanoparticles makes them an ideal colorimetric probe for Pb2+. The parameters of the reaction, including pH, incubation time, and concentration of components, were optimized to reach maximal sensitivity of Pb2+ detection. The absorption change is directly proportional to the Pb2+ concentration and allows the determination of Pb2+ ions within 10 min. The colorimetric sensor is characterized by a wide linear range from 25 to 500 ng×mL−1 with a low limit of detection of 11.3 ng×mL−1. The highly sensitive and selective Pb2+ detection in tap, drinking, and spring water revealed the feasibility and applicability of the developed colorimetric sensor.
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19
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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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20
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Martinez Jimenez M, Avila A, de Barros A, Lopez EO, Alvarez F, Riul A, Perez-Taborda JA. Polyethyleneimine-Functionalized Carbon Nanotube/Graphene Oxide Composite: A Novel Sensing Platform for Pb(II) Acetate in Aqueous Solution. ACS OMEGA 2021; 6:18190-18199. [PMID: 34308050 PMCID: PMC8296609 DOI: 10.1021/acsomega.1c02085] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Accepted: 06/03/2021] [Indexed: 05/03/2023]
Abstract
Heavy metal pollution is posing a severe health risk on living organisms. Therefore, significant research efforts are focused on their detection. Here, we developed a sensing platform sensor for the selective detection of lead(II) acetate. The sensor is based on self-assembled polyethyleneimine-functionalized carbon nanotubes (PEI-CNTs) and graphene oxide films deposited onto gold interdigitated electrodes. The graphene-based nanostructure showed a resistive behavior, and the fabricated layer-by-layer film was used to detect Pb(II) acetate in an aqueous solution by comparison of three electrochemical methods: impedance spectroscopy, amperometry, and potentiometry stripping analysis. The results obtained from different methods show that the detection limit was down to 36 pmol/L and the sensitivity up to 4.3 μAL/μmol, with excellent repeatability. The detection mechanism was associated with the high affinity of heavy metal ions with the functional groups present in the PEI-CNTs and GO, allowing high performance and sensitivity. The achieved results are important for the research toward integrated monitoring and sensing platforms for Pb(II) contamination in drinking water.
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Affiliation(s)
- Mawin
J. Martinez Jimenez
- Colombian
Society of Engineering Physics (SCIF), Pereira 660003, Colombia
- Department
of Applied Physics, “Gleb Wataghin” Institute of Physics, University of Campinas—UNICAMP, Campinas 13083-970, São Paulo, Brazil
| | - Alba Avila
- Centro
de Microelectrónica (CMUA), Departamento de Ingeniería
Eléctrica y Electrónica, Universidad
de los Andes, Bogotá 111711, Colombia
| | - Anerise de Barros
- Laboratory
of Functional Materials, Institute of Chemistry, University of Campinas—UNICAMP, P.O. Box 6154, Campinas 13083-970, São Paulo, Brazil
| | - Elvis Oswaldo Lopez
- Department
of Experimental Low Energy Physics, Brazilian
Center for Research in Physics (CBPF), Rua Dr. Xavier Sigaud 150, Rio de Janeiro 22290-180, Brazil
| | - Fernando Alvarez
- Department
of Applied Physics, “Gleb Wataghin” Institute of Physics, University of Campinas—UNICAMP, Campinas 13083-970, São Paulo, Brazil
| | - Antonio Riul
- Department
of Applied Physics, “Gleb Wataghin” Institute of Physics, University of Campinas—UNICAMP, Campinas 13083-970, São Paulo, Brazil
| | - Jaime Andres Perez-Taborda
- Colombian
Society of Engineering Physics (SCIF), Pereira 660003, Colombia
- Centro
de Microelectrónica (CMUA), Departamento de Ingeniería
Eléctrica y Electrónica, Universidad
de los Andes, Bogotá 111711, Colombia
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21
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Wang G, Wu M, Chu LT, Chen TH. Portable microfluidic device with thermometer-like display for real-time visual quantitation of Cadmium(II) contamination in drinking water. Anal Chim Acta 2021; 1160:338444. [PMID: 33894969 DOI: 10.1016/j.aca.2021.338444] [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: 11/13/2020] [Revised: 03/12/2021] [Accepted: 03/19/2021] [Indexed: 12/20/2022]
Abstract
Cadmium (Cd2+) is a toxic metal ion widely existing in water, soil and food. Conventional water quality control heavily relies on expensive, bulky and sophisticated instrument such as spectrometry, which is time-consuming and incompatible with on-site, real-time detection. Here, a portable microfluidic device with thermometer-like visual readouts is developed for real-time quantitation of cadmium (II) contamination in drinking water. We use Cd2+-dependent DNAzyme (Cd16), which is cleaved when Cd2+ is present, creating a single strand DNA which triggers catalytic hairpin assembly (CHA) with two hairpins H1 and H2 as the building blocks. Plenty of H1H2 complex, the product after the Cd2+-mediated CHA, are generated, which can connect magnetic microparticles (MMPs) and polystyrene microparticles (PMPs), forming "MMPs-H1H2-PMPs" sandwich structure. To provide visual readout to quantitate the particle connection, the particle solution is loaded into a portable microfluidic chip. A magnetic separator first removes MMPs and the connected PMPs, while free PMPs can continue flowing until accumulating into a bar at the particle dam. Shown as a thermometer-like display, the accumulating length is inversely proportional to the concentration of Cd2+, enabling quantitative detection of Cd2+ by the naked eye. The proposed device exhibits a limit of detection of 11.3 nM of Cd2+, selectivity >200-fold against other metal ions, high tolerance to the interferents present in drinking water and high recovery rate in tap water. With high analytical performance without any sample preparation step, this portable device is highly promising in real-time monitoring in urban drinking water at sites.
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Affiliation(s)
- Gaobo Wang
- Department of Biomedical Engineering, City University of Hong Kong, Hong Kong Special Administrative Region, 999077, China
| | - Minghui Wu
- Department of Biomedical Engineering, City University of Hong Kong, Hong Kong Special Administrative Region, 999077, China
| | - Lok Ting Chu
- Department of Biomedical Engineering, City University of Hong Kong, Hong Kong Special Administrative Region, 999077, China
| | - Ting-Hsuan Chen
- Department of Biomedical Engineering, City University of Hong Kong, Hong Kong Special Administrative Region, 999077, China.
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22
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Jiang T, Wang G, Chen TH. Microfluidic particle accumulation for visual quantitation of copper ions. Mikrochim Acta 2021; 188:176. [PMID: 33903980 DOI: 10.1007/s00604-021-04822-0] [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] [Received: 01/14/2021] [Accepted: 04/05/2021] [Indexed: 10/21/2022]
Abstract
A portable biosensor has been developed based on microfluidic particle accumulation for visual quantification of copper ions. A copper-dependent DNAzyme is used to connect magnetic microparticles (MMPs) and polystyrene microparticles (PMPs), forming "MMPs-DNAzyme-PMPs." When copper ions are present, the DNAzyme is cleaved, allowing free PMPs to be released from the MMPs-DNAzyme-PMP complex. Using a capillary-flow-based microfluidic device, the MMPs-DNAzyme-PMPs are first separated by a magnetic chamber, allowing the free PMPs to continue flowing until being trapped at a particle dam with a narrowing nozzle. Therefore, as a thermometer-like display, the copper level can be visually quantified by the accumulation length of the free PMPs in the trapping microchannel. The limit of detection (LOD) is 33 nM determined by the linear range of 25-100 nM, which is 900 times lower than the prevalent standard (~30 μM) in Hong Kong. The system shows excellent selectivity (> 1000-folds) against other heavy metal ions and abilities to adapt to multiple water environmental conditions. Tests on tap water samples and three local natural water sources in Hong Kong manifest that the device can effectively monitor the quality of freshwater with >70% recovery and 26.16% RSD.
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Affiliation(s)
- Tianyi Jiang
- Department of Biomedical Engineering, City University of Hong Kong, Hong Kong, Hong Kong
| | - Gaobo Wang
- Department of Biomedical Engineering, City University of Hong Kong, Hong Kong, Hong Kong
| | - Ting-Hsuan Chen
- Department of Biomedical Engineering, City University of Hong Kong, Hong Kong, Hong Kong.
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23
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24
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Liu YQ, Ju XJ, Pu XQ, Wen S, Liu WY, Liu Z, Wang W, Xie R, Chu LY. Visual detection of trace lead(II) using a forward osmosis-driven device loaded with ion-responsive nanogels. JOURNAL OF HAZARDOUS MATERIALS 2021; 404:124157. [PMID: 33039826 DOI: 10.1016/j.jhazmat.2020.124157] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2020] [Revised: 09/11/2020] [Accepted: 09/29/2020] [Indexed: 06/11/2023]
Abstract
A simple and portable thermometer-type device based on forward osmosis-driven liquid column rising is developed for visual detection of trace Pb2+. The device consists of a top indicator tube, a chamber loaded with Pb2+-responsive poly(N-isopropylacrylamide-co-benzo-18-crown-6-acrylamide) (PNB) smart nanogels and a bottom semipermeable membrane. Upon the recognition of Pb2+, PNB smart nanogels undergo a Pb2+-induced hydrophobic to hydrophilic transition, which simultaneously causes the increase of osmotic pressure inside the device. Driven by this osmotic pressure difference, more Pb2+ solution flows into the device, causing the rise of the liquid column in the indicator tube, which can be directly observed by naked eyes. The relationship between the change of liquid column height and the Pb2+ concentration is investigated for the quantitative detection of Pb2+. With the proposed forward osmosis-driven device, trace Pb2+ as low as 10-10 M in aqueous solutions can be detected. This method provides a novel and simple strategy for the visual detection of trace Pb2+.
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Affiliation(s)
- Yu-Qiong Liu
- School of Chemical Engineering, Sichuan University, Chengdu 610065, People's Republic of China
| | - Xiao-Jie Ju
- School of Chemical Engineering, Sichuan University, Chengdu 610065, People's Republic of China; State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, People's Republic of China.
| | - Xing-Qun Pu
- School of Chemical Engineering, Sichuan University, Chengdu 610065, People's Republic of China
| | - Shuang Wen
- School of Chemical Engineering, Sichuan University, Chengdu 610065, People's Republic of China
| | - Wen-Ying Liu
- School of Chemical Engineering, Sichuan University, Chengdu 610065, People's Republic of China
| | - Zhuang Liu
- School of Chemical Engineering, Sichuan University, Chengdu 610065, People's Republic of China; State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, People's Republic of China
| | - Wei Wang
- School of Chemical Engineering, Sichuan University, Chengdu 610065, People's Republic of China; State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, People's Republic of China
| | - Rui Xie
- School of Chemical Engineering, Sichuan University, Chengdu 610065, People's Republic of China; State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, People's Republic of China
| | - Liang-Yin Chu
- School of Chemical Engineering, Sichuan University, Chengdu 610065, People's Republic of China; State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, People's Republic of China
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25
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Zhang D, Yu X, Wu L, Jin H, Wei M. Ultrasensitive electrochemical detection of Pb2+ based on DNAzyme coupling with exonuclease III –Assisted target recycling. J Electroanal Chem (Lausanne) 2021. [DOI: 10.1016/j.jelechem.2020.114960] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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26
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Yang Y, Li W, Liu J. Review of recent progress on DNA-based biosensors for Pb 2+ detection. Anal Chim Acta 2020; 1147:124-143. [PMID: 33485571 DOI: 10.1016/j.aca.2020.12.056] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2020] [Revised: 12/12/2020] [Accepted: 12/25/2020] [Indexed: 02/08/2023]
Abstract
Lead (Pb) is a highly toxic heavy metal of great environmental and health concerns, and interestingly Pb2+ has played important roles in nucleic acids chemistry. Since 2000, using DNA for selective detection of Pb2+ has become a rapidly growing topic in the analytical community. Pb2+ can serve as the most active cofactor for RNA-cleaving DNAzymes including the GR5, 17E and 8-17 DNAzymes. Recently, Pb2+ was found to promote a porphyrin metalation DNAzyme named T30695. In addition, Pb2+ can tightly bind to various G-quadruplex sequences inducing their unique folding and binding to other molecules such as dyes and hemin. The peroxidase-like activity of G-quadruplex/hemin complexes was also used for Pb2+ sensing. In this article, these Pb2+ recognition mechanisms are reviewed from fundamental chemistry to the design of fluorescent, colorimetric, and electrochemical biosensors. In addition, various signal amplification mechanisms such as rolling circle amplification, hairpin hybridization chain reaction and nuclease-assisted methods are coupled to these sensing methods to drive up sensitivity. We mainly cover recent examples published since 2015. In the end, some practical aspects of these sensors and future research opportunities are discussed.
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Affiliation(s)
- Yongjie Yang
- Department of Food and Biological Sciences, College of Agriculture, Yanbian University, Yanji, 133002, China; Department of Chemistry, Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, Ontario, N2L 3G1, Canada
| | - Weixuan Li
- Department of Chemistry, Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, Ontario, N2L 3G1, Canada
| | - Juewen Liu
- Department of Chemistry, Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, Ontario, N2L 3G1, Canada; Water Institute, University of Waterloo, Waterloo, Ontario, N2L 3G1, Canada.
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27
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Hartanto H, Wu M, Lam ML, Chen TH. Microfluidic immunoassay for detection of serological antibodies: A potential tool for rapid evaluation of immunity against SARS-CoV-2. BIOMICROFLUIDICS 2020; 14:061507. [PMID: 33343783 PMCID: PMC7738199 DOI: 10.1063/5.0031521] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/01/2020] [Accepted: 11/23/2020] [Indexed: 05/06/2023]
Abstract
In December 2019, coronavirus disease 2019 became a pandemic affecting more than 200 countries and territories. Millions of lives are still affected because of mandatory quarantines, which hamstring economies and induce panic. Immunology plays a major role in the modern field of medicine, especially against virulent infectious diseases. In this field, neutralizing antibodies are heavily studied because they reflect the level of infection and individuals' immune status, which are essential when considering resumption of work, flight travel, and border entry control. More importantly, it also allows evaluating the antiviral vaccine efficacy as vaccines are still known for being the ultimate intervention method to inhibit the rapid spread of virulent infectious diseases. In this Review, we first introduce the host immune response after the infection of SARS-CoV-2 and discuss the latest results using conventional immunoassays. Next, as an enabling platform for detection with sufficient sensitivity while saving analysis time and sample size, the progress of microfluidic-based immunoassays is discussed and compared based on surface modification, microfluidic kinetics, signal output, signal amplification, sample matrix, and the detection of anti-SARS-CoV-2 antibodies. Based on the overall comparison, this Review concludes by proposing the future integration of visual quantitative signals on microfluidic devices as a more suitable approach for general use and large-scale surveillance.
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Affiliation(s)
- Hogi Hartanto
- Department of Biomedical Engineering, City University of Hong Kong, Hong Kong Special Administrative Region 999077, China
| | - Minghui Wu
- Department of Biomedical Engineering, City University of Hong Kong, Hong Kong Special Administrative Region 999077, China
| | - Miu Ling Lam
- School of Creative Media, City University of Hong Kong, Hong Kong Special Administrative Region 999077, China
| | - Ting-Hsuan Chen
- Department of Biomedical Engineering, City University of Hong Kong, Hong Kong Special Administrative Region 999077, China
- Author to whom correspondence should be addressed:
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28
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Geng F, Wang D, Feng L, Li G, Xu M. An improved structure-switch aptamer-based fluorescent Pb 2+ biosensor utilizing the binding induced quenching of AMT to G-quadruplex. Chem Commun (Camb) 2020; 56:10517-10520. [PMID: 32779681 DOI: 10.1039/d0cc03669b] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
An improved aptamer-based fluorescent Pb2+ biosensor utilizing the binding induced quenching of AMT to G-quadruplex has been rationally designed with a LOD of 3.6 nM. The utility of the developed biosensor was demonstrated by the successful detection of Pb2+ in real complex clinical samples with satisfactory recovery and good reproducibility.
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Affiliation(s)
- Fenghua Geng
- National Engineering Research Center of Coal Preparation and Purification, Key Laboratory of Coal Processing and Efficient Utilization of Ministry of Education, School of Chemical Engineering and Technology, China University of Mining & Technology, Xuzhou, 221116, China.
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29
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Swain KK, Balasubramaniam R, Bhand S. A portable microfluidic device-based Fe 3O 4-urease nanoprobe-enhanced colorimetric sensor for the detection of heavy metals in fish tissue. Prep Biochem Biotechnol 2020; 50:1000-1013. [PMID: 32564658 DOI: 10.1080/10826068.2020.1780611] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
A portable microfluidic device with highly sensitive enzyme nanoprobe (Fe3O4 MNPs-urease, average size 34.6 nm) was demonstrated for the analysis of heavy metals ions (Hg2+, Cd2+ and Pb2+) in fish gill and muscle tissue. The immobilized urease nanoprobe (Km = 0.05 mM) exhibited twofold sensitivity over the free enzyme assay (apparent Km = 0.1 mM). The nanoprobe was characterized using SEM, EDAX, PSA and FT-IR. The inhibition measurements were carried out for individual as well as the mixture of metal ions (CRM standards of 9 elements (CRMmix-9)). The lower limit of quantification (LOQ) (0.5, 0.1, and 0.1 ng L-1 for Hg2+, Cd2+, and Pb2+) and lower limit of detection (LOD) was achieved at 0.1 ng L-1 with sensitivity 8-14% per decade for Hg2+, Cd2+, and Pb2+ ions. A visual result can be observed by the naked eye through the microfluidic device as well as with 96 transparent microwell plates. The order of relative inhibition was found to be CRMmix-9 > (Hg2+ + Cd2+ + Pb2+) > (Cd2+ + Pb2+) > (Pb2+ + Hg2+) > (Hg2+ + Cd2+) > Pb2+ > Cd2+ > Hg2+, respectively. The recovery % in fish tissues were found to be 88-98% for Hg2+, Cd2+ and Pb2+ ions.
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Affiliation(s)
- Krishna Kumari Swain
- Biosensor Lab, Department of Chemistry, BITS Pilani KK Birla Goa Campus, South Goa, India
| | - R Balasubramaniam
- Precision Machining Section, Precision Engineering Division, Bhabha Atomic Research Centre, Mumbai, India
| | - Sunil Bhand
- Biosensor Lab, Department of Chemistry, BITS Pilani KK Birla Goa Campus, South Goa, India
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Safdar S, Lammertyn J, Spasic D. RNA-Cleaving NAzymes: The Next Big Thing in Biosensing? Trends Biotechnol 2020; 38:1343-1359. [PMID: 32473751 DOI: 10.1016/j.tibtech.2020.04.012] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2020] [Revised: 04/26/2020] [Accepted: 04/28/2020] [Indexed: 02/07/2023]
Abstract
Nucleic acid enzymes (NAzymes) are nucleic acid molecules with catalytic activity. A subset, the RNA-cleaving NAzyme, is characterized by its substrate of choice: an RNA unit. These enzymes have been used for diverse applications, including biosensor development, akin to their protein counterparts. Owing to their function as both biorecognition elements and signal generators, robust bioassays based entirely on NAzyme molecules have been developed. Additionally, unique mechanisms for integration with other biorecognition elements and signal generation methods have been explored to realize ultrasensitive, specific, and user-friendly biosensors. Furthermore, NAzyme-based bioassays have already broken into the in vitro diagnostics market, with more promise in the pipeline.
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Affiliation(s)
- Saba Safdar
- Department of Biosystems, Biosensors Group, KU Leuven, 3001, Leuven, Belgium
| | - Jeroen Lammertyn
- Department of Biosystems, Biosensors Group, KU Leuven, 3001, Leuven, Belgium.
| | - Dragana Spasic
- Department of Biosystems, Biosensors Group, KU Leuven, 3001, Leuven, Belgium
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