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Zhou Y, Du W, Chen Y, Li L, Xiao X, Xu Y, Yang W, Hu X, Wang B, Zhang J, Jiang Q, Wang Y. Pathogen detection via inductively coupled plasma mass spectrometry analysis with nanoparticles. Talanta 2024; 277:126325. [PMID: 38833906 DOI: 10.1016/j.talanta.2024.126325] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2023] [Revised: 04/24/2024] [Accepted: 05/24/2024] [Indexed: 06/06/2024]
Abstract
Infections caused by viruses and bacteria pose a significant threat to global public health, emphasizing the critical importance of timely and precise detection methods. Inductively coupled plasma mass spectrometry (ICP-MS), a contemporary approach for pathogen detection, offers distinct advantages such as high sensitivity, a wide linear range, and multi-index capabilities. This review elucidates the underexplored application of ICP-MS in conjunction with functional nanoparticles (NPs) for the identification of viruses and bacteria. The review commences with an elucidation of the underlying principles, procedures, target pathogens, and NP requirements for this innovative approach. Subsequently, a thorough analysis of the advantages and limitations associated with these techniques is provided. Furthermore, the review delves into a comprehensive examination of the challenges encountered when utilizing NPs and ICP-MS for pathogen detection, culminating in a forward-looking assessment of the potential pathways for advancement in this domain. Thus, this review contributes novel perspectives to the field of pathogen detection in biomedicine by showcasing the promising synergy of ICP-MS and NPs.
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Affiliation(s)
- Yujie Zhou
- National Engineering Research Center for Biomaterials, Sichuan University, 29 Wangjiang Road, Chengdu, Sichuan, 610065, China
| | - Wenli Du
- National Engineering Research Center for Biomaterials, Sichuan University, 29 Wangjiang Road, Chengdu, Sichuan, 610065, China
| | - Yuzuo Chen
- West China School of Basic Medical Sciences and Forensic Medicine, Sichuan University, Chengdu, Sichuan, 610041, China
| | - Lei Li
- National Engineering Research Center for Biomaterials, Sichuan University, 29 Wangjiang Road, Chengdu, Sichuan, 610065, China
| | - Xuanyu Xiao
- National Engineering Research Center for Biomaterials, Sichuan University, 29 Wangjiang Road, Chengdu, Sichuan, 610065, China
| | - Yuanyuan Xu
- National Engineering Research Center for Biomaterials, Sichuan University, 29 Wangjiang Road, Chengdu, Sichuan, 610065, China
| | - Wenjuan Yang
- Department of Gastroenterology, West China Hospital, Sichuan University, Chengdu, Sichuan, 610041, China
| | - Xuefeng Hu
- West China School of Basic Medical Sciences and Forensic Medicine, Sichuan University, Chengdu, Sichuan, 610041, China
| | - Baoning Wang
- West China School of Basic Medical Sciences and Forensic Medicine, Sichuan University, Chengdu, Sichuan, 610041, China.
| | - Jieyu Zhang
- National Engineering Research Center for Biomaterials, Sichuan University, 29 Wangjiang Road, Chengdu, Sichuan, 610065, China.
| | - Qing Jiang
- National Engineering Research Center for Biomaterials, Sichuan University, 29 Wangjiang Road, Chengdu, Sichuan, 610065, China
| | - Yunbing Wang
- National Engineering Research Center for Biomaterials, Sichuan University, 29 Wangjiang Road, Chengdu, Sichuan, 610065, China
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Natsuhara D, Miyajima A, Bussho T, Okamoto S, Nagai M, Ihira M, Shibata T. A microfluidic-based quantitative analysis system for the multiplexed genetic diagnosis of human viral infections using colorimetric loop-mediated isothermal amplification. Analyst 2024; 149:3335-3345. [PMID: 38695841 DOI: 10.1039/d4an00215f] [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: 06/11/2024]
Abstract
In this study, a microfluidic-based system utilizing colorimetric loop-mediated isothermal amplification (LAMP) is introduced for the quantitative analysis of nucleic acid targets. This system offers a user-friendly and cost-effective platform for the multiplexed genetic diagnosis of various infectious diseases across multiple samples. It includes time-lapse imaging equipment for capturing images of the microfluidic device during the LAMP assay and a hue-based quantitative analysis software to analyze the LAMP reaction, streamlining diagnostic procedures. An electric pipette was used to simplify the loading of samples and LAMP reagents into the device, allowing easy operation even by untrained individuals. The hue-based analysis software employs efficient image processing and post-processing techniques to calculate DNA amplification curves based on color changes in multiple reaction chambers. This software automates several tasks, such as identifying reaction chamber areas from time-lapse images, quantifying color information within each chamber, correcting baselines of DNA amplification curves, fitting experimental data to theoretical curves, and determining the threshold time for each curve. To validate the developed system, conventional off-chip LAMP assays were conducted with a 25 μL reaction mixture in 0.2 mL polymerase chain reaction (PCR) tubes using a real-time turbidimeter. The results indicated that the threshold time obtained using the colorimetric LAMP assay in the developed system is comparable to that obtained with real-time turbidity measurements in PCR tubes, demonstrating the system's capability for quantitative analysis of target nucleic acids, including those from human herpesviruses.
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Affiliation(s)
- Daigo Natsuhara
- Department of Mechanical Engineering, Toyohashi University of Technology, Aichi 441-8580, Japan.
| | - Akira Miyajima
- Department of Mechanical Engineering, Toyohashi University of Technology, Aichi 441-8580, Japan.
| | - Tomoya Bussho
- Department of Mechanical Engineering, Toyohashi University of Technology, Aichi 441-8580, Japan.
| | - Shunya Okamoto
- Department of Mechanical Engineering, Toyohashi University of Technology, Aichi 441-8580, Japan.
| | - Moeto Nagai
- Department of Mechanical Engineering, Toyohashi University of Technology, Aichi 441-8580, Japan.
- Institute for Research on Next-generation Semiconductor and Sensing Science (IRES2), Toyohashi University of Technology, Aichi 441-8580, Japan
| | - Masaru Ihira
- Faculty of Clinical Science for Biological Monitoring, Fujita Health University, Aichi 470-1192, Japan
| | - Takayuki Shibata
- Department of Mechanical Engineering, Toyohashi University of Technology, Aichi 441-8580, Japan.
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Chen YX, Lou YR, Duan LJ, Zhou QJ, Xu ZJ, Chen FJ, Chen HX, Xu GZ, Du AF, Chen J. Parallel detection of multiple zoonotic parasites using a real-time fluorogenic loop-mediated isothermal amplification-based quadruple-sample microfluidic chip. Front Microbiol 2023; 14:1238376. [PMID: 37822745 PMCID: PMC10562543 DOI: 10.3389/fmicb.2023.1238376] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Accepted: 09/08/2023] [Indexed: 10/13/2023] Open
Abstract
Zoonotic parasites pose significant health risks globally. In the present study, we combined a microfluidic chip with loop-mediated isothermal amplification (on-chip LAMP) to detect five zoonotic parasites: Toxoplasma gondii, Cryptosporidium parvum, Cryptosporidium hominis, Clonorchis sinensis, and Taenia solium. This method enabled the simultaneous parallel analysis of five genetic markers from a maximum of four samples per chip. The on-chip LAMP assay was conducted in a highly automated format via the addition (by pipetting) of each sample in a single operation. The reaction was performed in volumes as low as 5 μL at a temperature of 65°C for 60 min, achieving limits of detection ranging from 10-2 to 10-3 pg./μL of recombinant plasmid DNA. All the time-to-positive values were less than 40 min, and almost all the coefficients of variation were less than 10%, even when using limit of detection concentrations for multiple pathogens, indicating robust reproducibility among replicates. The clinical sensitivity and specificity for detecting 135 field samples were 98.08 and 97.59%, respectively, compared with traditional biological methods, indicating good applicability in the detection of field samples. This on-chip LAMP assay allows for low reagent consumption, ease of operation, and multiple analyses of samples and genetic targets, and is applicable for on-site detection and the routine monitoring of multiple zoonotic parasites.
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Affiliation(s)
- Yu-Xin Chen
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Ningbo University, Ningbo, China
- School of Marine Sciences, Ningbo University, Ningbo, China
| | - Yi-Rong Lou
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Ningbo University, Ningbo, China
- School of Marine Sciences, Ningbo University, Ningbo, China
| | - Li-Jun Duan
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Ningbo University, Ningbo, China
- School of Marine Sciences, Ningbo University, Ningbo, China
- Ningbo Haishu District Animal Husbandry and Veterinary Medicine Technical Management Service Station, Ningbo, China
| | - Qian-Jin Zhou
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Ningbo University, Ningbo, China
- School of Marine Sciences, Ningbo University, Ningbo, China
| | - Zhong-Jie Xu
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Ningbo University, Ningbo, China
- School of Marine Sciences, Ningbo University, Ningbo, China
| | - Fang-Jie Chen
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Ningbo University, Ningbo, China
- School of Marine Sciences, Ningbo University, Ningbo, China
| | - Hong-Xian Chen
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Ningbo University, Ningbo, China
- School of Marine Sciences, Ningbo University, Ningbo, China
| | - Gui-Zong Xu
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Ningbo University, Ningbo, China
- School of Marine Sciences, Ningbo University, Ningbo, China
| | - Ai-Fang Du
- Institute of Preventive Veterinary Medicine, Zhejiang Provincial Key Laboratory of Preventive Veterinary Medicine, College of Animal Sciences, Zhejiang University, Hangzhou, China
| | - Jiong Chen
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Ningbo University, Ningbo, China
- School of Marine Sciences, Ningbo University, Ningbo, China
- Key Laboratory of Aquacultural Biotechnology Ministry of Education, Ningbo University, Ningbo, China
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Liu MY, Zhang YR, Zhang JH, Miao L, Dang YF, Fei CJ, Li CH, Chen J. Molecular characterization and antimicrobial activity of NK-lysin in black scraper (Thamnaconus modestus). FISH & SHELLFISH IMMUNOLOGY 2023; 136:108703. [PMID: 36948366 DOI: 10.1016/j.fsi.2023.108703] [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: 01/04/2023] [Revised: 03/13/2023] [Accepted: 03/19/2023] [Indexed: 06/18/2023]
Abstract
NK-lysin (NKL) is a positively charged antimicrobial peptide with broad-spectrum bactericidal activities. In this study, the cDNA sequence of NKL (TmNKL) from black scraper (Thamnaconus modestus) was cloned, which encodes a predicted polypeptide of 150 amino acids that contains a surfactant protein B domain with three disulfide bonds. Phylogenetically, TmNKL was most closely related to its teleost counterpart from tiger puffer (Takifugu rubripes). Expression analysis demonstrated that TmNKL transcripts were constitutively expressed in all tested tissues, with the highest expression levels in the gills. Its expression was significantly upregulated in the gills, head kidney, and spleen after infection with Vibrio parahaemolyticus. A linear peptide (TmNKLP40L) and a disulfide-type peptide (TmNKLP40O) were further synthesized and results showed that disulfide bonds are not essential for bactericidal activities of TmNKL, and that both forms of TmNKL exhibited potent bactericidal activities against 4 gram- negative bacteria, including V. parahaemolyticus, V. alginolyticus, Edwardsiella tarda, and V. harveyi. Observed antimicrobial activities are likely due to the effects of TmNKLP40L and TmNKLP40O treatment on disrupting the integrity of both inner and outer membrane of V. parahaemolyticus, resulting in hydrolysis of bacterial genomic DNA. Damaged cell membranes and leakage of intracellular contents were further confirmed using scanning and transmission microscopy. Moreover, administration of 1.0 μg/g TmNKLP40L or TmNKLP40O significantly decreased bacterial load in tissues and thus, pronouncedly enhanced the survival of V. parahaemolyticus-infected fish. Overall, our results demonstrated that TmNKL is a potent innate effector and provides protective effects against bacterial infection.
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Affiliation(s)
- Mei-Yi Liu
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Ningbo University, Ningbo, 315211, China; Laboratory of Biochemistry and Molecular Biology, School of Marine Sciences, Ningbo University, Meishan Campus, Ningbo, 315832, China; Key Laboratory of Applied Marine Biotechnology of Ministry of Education, Ningbo University, Meishan Campus, Ningbo, 315832, China
| | - Yi-Rong Zhang
- Laboratory of Biochemistry and Molecular Biology, School of Marine Sciences, Ningbo University, Meishan Campus, Ningbo, 315832, China; Key Laboratory of Applied Marine Biotechnology of Ministry of Education, Ningbo University, Meishan Campus, Ningbo, 315832, China
| | - Jian-Hua Zhang
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Ningbo University, Ningbo, 315211, China; Laboratory of Biochemistry and Molecular Biology, School of Marine Sciences, Ningbo University, Meishan Campus, Ningbo, 315832, China; Key Laboratory of Applied Marine Biotechnology of Ministry of Education, Ningbo University, Meishan Campus, Ningbo, 315832, China
| | - Liang Miao
- Laboratory of Biochemistry and Molecular Biology, School of Marine Sciences, Ningbo University, Meishan Campus, Ningbo, 315832, China; Key Laboratory of Applied Marine Biotechnology of Ministry of Education, Ningbo University, Meishan Campus, Ningbo, 315832, China
| | - Yun-Fei Dang
- Laboratory of Biochemistry and Molecular Biology, School of Marine Sciences, Ningbo University, Meishan Campus, Ningbo, 315832, China; Key Laboratory of Applied Marine Biotechnology of Ministry of Education, Ningbo University, Meishan Campus, Ningbo, 315832, China
| | - Chen-Jie Fei
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Ningbo University, Ningbo, 315211, China; Laboratory of Biochemistry and Molecular Biology, School of Marine Sciences, Ningbo University, Meishan Campus, Ningbo, 315832, China; Key Laboratory of Applied Marine Biotechnology of Ministry of Education, Ningbo University, Meishan Campus, Ningbo, 315832, China.
| | - Chang-Hong Li
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Ningbo University, Ningbo, 315211, China; Laboratory of Biochemistry and Molecular Biology, School of Marine Sciences, Ningbo University, Meishan Campus, Ningbo, 315832, China; Key Laboratory of Applied Marine Biotechnology of Ministry of Education, Ningbo University, Meishan Campus, Ningbo, 315832, China.
| | - Jiong Chen
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Ningbo University, Ningbo, 315211, China; Laboratory of Biochemistry and Molecular Biology, School of Marine Sciences, Ningbo University, Meishan Campus, Ningbo, 315832, China; Key Laboratory of Applied Marine Biotechnology of Ministry of Education, Ningbo University, Meishan Campus, Ningbo, 315832, China
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5
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Hu K, Li Y, Wang F, Liu J, Li Y, Zhao Q, Zheng X, Zhu N, Yu X, Fang S, Huang J. A loop-mediated isothermal amplification-based microfluidic chip for triplex detection of shrimp pathogens. JOURNAL OF FISH DISEASES 2023; 46:137-146. [PMID: 36336976 DOI: 10.1111/jfd.13727] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Revised: 10/17/2022] [Accepted: 10/19/2022] [Indexed: 06/16/2023]
Abstract
Decapod iridescent virus 1 (DIV1), White spot syndrome virus (WSSV), and Enterocytozoon hepatopenaei (EHP) pose serious threats to the shrimp farming. To date, early detection remains an important way to control the occurrence and diffusion of these pathogens. Here, we developed for the first time, a loop-mediated isothermal amplification (LAMP)-based microfluidic chip detection system, which could detect DIV1, WSSV, and EHP simultaneously. The limits of detection (LoD) of the system were 10 copies/reaction for EHP and DIV1, and 102 copies/reaction for WSSV. The entire detection procedure could be completed rapidly in 40 min at 63°C with 100% specificity and had no cross-reaction with other common shrimp pathogens. This newly established method was further validated using 94 Penaeus vannamei clinical samples, which were comparable to a typical qPCR assay and revealed good stability and reproducibility. These results illustrate that this LAMP microfluidic chip detection system allows rapid triplex pathogen analysis and could satisfy the demands of the field and routine diagnoses in aquaculture.
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Affiliation(s)
- Keshun Hu
- School of Biological and Chemical Engineering, Zhejiang University of Science and Technology, Hangzhou, China
| | - Ye Li
- School of Biological and Chemical Engineering, Zhejiang University of Science and Technology, Hangzhou, China
| | - Feng Wang
- School of Biological and Chemical Engineering, Zhejiang University of Science and Technology, Hangzhou, China
| | - Jianying Liu
- School of Biological and Chemical Engineering, Zhejiang University of Science and Technology, Hangzhou, China
| | - Yuanyuan Li
- School of Biological and Chemical Engineering, Zhejiang University of Science and Technology, Hangzhou, China
| | - Qian Zhao
- School of Biological and Chemical Engineering, Zhejiang University of Science and Technology, Hangzhou, China
| | - Xiaoye Zheng
- Zhejiang Fisheries Technical Extension Center, Hangzhou, China
| | - Ningyu Zhu
- Zhejiang Fisheries Technical Extension Center, Hangzhou, China
| | - Xiaoping Yu
- College of Life Sciences, China Jiliang University, Hangzhou, China
| | - Shaohua Fang
- Zhejiang Orient Gene Biotech Company Limited, Huzhou, China
| | - Jun Huang
- School of Biological and Chemical Engineering, Zhejiang University of Science and Technology, Hangzhou, China
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Sun Z, Qi J, Shen Y, Yang N, Liu S, Wang A, Wang C, Tang J. Collection, nucleic acid release, amplification, and visualization platform for rapid field detection of rice false smut. LAB ON A CHIP 2023; 23:542-552. [PMID: 36647749 DOI: 10.1039/d2lc01166b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Rice false smut (RFS) has brought serious food safety problems to the world. Reliable diagnostic tools are needed for the field detection of RFS. Traditional polymerase chain reaction (PCR) is inefficient due to sample transport and preparation, which cannot adapt to the needs of field detection. Herein, we successfully developed a simple, portable microfluidic test platform to rapidly detect RFS. To simplify the operation, we integrated spore purification, nucleic acid release, and amplification into one chip. A micro air pump was used to separate the spores from the impurities and complete the collection of the spores through the airflow. We rapidly lysed spores and released nucleic acids by the benzyl chloride method. The loop-mediated isothermal amplification (LAMP) products could be combined with SYBR Green I to observe the results visually. On-chip sample tests showed that the spore collection efficiency was approximately 78%. By providing on-chip detection results, the chip had 100% specificity and a detection limit of 100 copies/reaction. At the same time, the stability (CV < 5%) and quantitative ability (R2 = 0.989) of the chip were also guaranteed. Through the visual detection of large samples, the on-chip detection results were highly concordant with the classical RT-PCR detection results, and the detection timeliness was greatly enhanced. Compared with RT-PCR, the single-sample detection time was shortened by about twenty minutes. The proposed micro-diagnostic tool did not require any large end-point detection instruments and avoided the complicated operation of nucleic acid extraction. As a result, in the future, our microfluidic chip could be used for rapid and real-time monitoring and early warning of rice false smut spores in rice paddies.
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Affiliation(s)
- Zongbao Sun
- Department of Food & Biological Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Jiahao Qi
- Department of Food & Biological Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Ye Shen
- Department of Food & Biological Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Ning Yang
- School of Electrical and Information Engineering, Jiangsu University, Zhenjiang 212013, China.
| | - Shuhua Liu
- China National Rice Research Institute, Hangzhou 310006, China.
| | - Aiying Wang
- China National Rice Research Institute, Hangzhou 310006, China.
| | - Cilin Wang
- China National Rice Research Institute, Hangzhou 310006, China.
| | - Jian Tang
- China National Rice Research Institute, Hangzhou 310006, China.
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7
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Oberc C, Sojoudi P, Li PCH. Nucleic acid amplification test (NAAT) conducted in a microfluidic chip to differentiate between various ginseng species. Analyst 2023; 148:525-531. [PMID: 36601715 DOI: 10.1039/d2an01960d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Panax ginseng and Panax quinquefolius have different medicinal properties and market values; however, they can be difficult to distinguish from one another based on physical appearances alone. Therefore, a molecular test that can be performed in commercial settings is needed to overcome this difficulty. A locus that contains a single nucleotide polymorphism (SNP) site to differentiate between P. ginseng and P. quinquefolius has been selected. An isothermal nucleic acid amplification test (NAAT) has been developed for use in a microfluidic chip; this NAAT method, which is based on lesion-induced DNA amplification (LIDA), amplifies the extracted plant genomic samples and enhances the detection of specific SNPs. This NAAT method was used to authenticate five ginseng root samples which indicated that two of the five samples appear to be mislabeled. These authentication results were consistent with those obtained from next generation sequencing (NGS) although this molecular test is more affordable and faster than NGS.
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Affiliation(s)
- Christopher Oberc
- Department of Chemistry, Simon Fraser University, 8888 University Drive, Burnaby BC, V5A 1S6, Canada.
| | - Parsa Sojoudi
- Department of Chemistry, Simon Fraser University, 8888 University Drive, Burnaby BC, V5A 1S6, Canada.
| | - Paul C H Li
- Department of Chemistry, Simon Fraser University, 8888 University Drive, Burnaby BC, V5A 1S6, Canada.
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Li M, Ge H, Sun Z, Fu J, Cao L, Feng X, Meng G, Peng Y, Liu Y, Zhao C. A loop-mediated isothermal amplification-enabled analytical assay for the detection of SARS-CoV-2: A review. Front Cell Infect Microbiol 2022; 12:1068015. [PMID: 36619749 PMCID: PMC9816412 DOI: 10.3389/fcimb.2022.1068015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2022] [Accepted: 11/29/2022] [Indexed: 12/24/2022] Open
Abstract
The number of words: 4645, the number of figures: 4, the number of tables: 1The outbreak of COVID-19 in December 2019 caused a global pandemic of acute respiratory disease, and with the increasing virulence of mutant strains and the number of confirmed cases, this has resulted in a tremendous threat to global public health. Therefore, an accurate diagnosis of COVID-19 is urgently needed for rapid control of SARS-CoV-2 transmission. As a new molecular biology technology, loop-mediated isothermal amplification (LAMP) has the advantages of convenient operation, speed, low cost and high sensitivity and specificity. In the past two years, rampant COVID-19 and the continuous variation in the virus strains have demanded higher requirements for the rapid detection of pathogens. Compared with conventional RT-PCR and real-time RT-PCR methods, genotyping RT-LAMP method and LAMP plus peptide nucleic acid (PNA) probe detection methods have been developed to correctly identified SARS-CoV-2 variants, which is also why LAMP technology has attracted much attention. LAMP detection technology combined with lateral flow assay, microfluidic technology and other sensing technologies can effectively enhance signals by nucleic acid amplification and help to give the resulting output in a faster, more convenient and user-friendly way. At present, LAMP plays an important role in the detection of SARS-CoV-2.
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Affiliation(s)
- Mingna Li
- College of public health, Jilin Medical University, Jilin, China,College of medical technology, Beihua University, Jilin, China
| | - Hongjuan Ge
- College of public health, Jilin Medical University, Jilin, China
| | - Zhe Sun
- College of public health, Jilin Medical University, Jilin, China,College of medical technology, Beihua University, Jilin, China
| | - Jangshan Fu
- College of public health, Jilin Medical University, Jilin, China
| | - Lele Cao
- College of public health, Jilin Medical University, Jilin, China
| | - Xinrui Feng
- College of public health, Jilin Medical University, Jilin, China,Medical college, Yanbian University, Jilin, China
| | - Guixian Meng
- College of medical laboratory, Jilin Medical University, Jilin, China
| | - Yubo Peng
- Business School, The University of Adelaide, Adelaide, SA, Australia
| | - Yan Liu
- College of public health, Jilin Medical University, Jilin, China,*Correspondence: Yan Liu, ; Chen Zhao,
| | - Chen Zhao
- College of public health, Jilin Medical University, Jilin, China,*Correspondence: Yan Liu, ; Chen Zhao,
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9
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Oberc C, Brar P, Li PC. Centrifugal dynamic hybridization conducted in a microfluidic chip for signal enhancement in nucleic acid tests. Anal Biochem 2022; 658:114930. [DOI: 10.1016/j.ab.2022.114930] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Revised: 09/19/2022] [Accepted: 09/20/2022] [Indexed: 12/01/2022]
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Atçeken N, Yigci D, Ozdalgic B, Tasoglu S. CRISPR-Cas-Integrated LAMP. BIOSENSORS 2022; 12:1035. [PMID: 36421156 PMCID: PMC9688180 DOI: 10.3390/bios12111035] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/23/2022] [Revised: 10/10/2022] [Accepted: 11/14/2022] [Indexed: 06/16/2023]
Abstract
Pathogen-specific point-of-care (PoC) diagnostic tests have become an important need in the fight against infectious diseases and epidemics in recent years. PoC diagnostic tests are designed with the following parameters in mind: rapidity, accuracy, sensitivity, specificity, and ease of use. Molecular techniques are the gold standard for pathogen detection due to their accuracy and specificity. There are various limitations in adapting molecular diagnostic methods to PoC diagnostic tests. Efforts to overcome limitations are focused on the development of integrated molecular diagnostics by utilizing the latest technologies available to create the most successful PoC diagnostic platforms. With this point of view, a new generation technology was developed by combining loop-mediated isothermal amplification (LAMP) technology with clustered regularly interspaced short palindromic repeat (CRISPR)-associated (CRISPR-Cas) technology. This integrated approach benefits from the properties of LAMP technology, namely its high efficiency, short turnaround time, and the lack of need for a complex device. It also makes use of the programmable function of CRISPR-Cas technology and the collateral cleavage activity of certain Cas proteins that allow for convenient reporter detection. Thus, this combined technology enables the development of PoC diagnostic tests with high sensitivity, specificity, and ease of use without the need for complicated devices. In this review, we discuss the advantages and limitations of the CRISPR/Cas combined LAMP technology. We review current limitations to convert CRISPR combined LAMP into pathogen-specific PoC platforms. Furthermore, we point out the need to design more useful PoC platforms using microfabrication technologies by developing strategies that overcome the limitations of this new technology, reduce its complexity, and reduce the risk of contamination.
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Affiliation(s)
- Nazente Atçeken
- Koç University Translational Medicine Research Center (KUTTAM), Koç University, Istanbul 34450, Turkey
| | - Defne Yigci
- School of Medicine, Koç University, Istanbul 34450, Turkey
| | - Berin Ozdalgic
- Koç University Translational Medicine Research Center (KUTTAM), Koç University, Istanbul 34450, Turkey
- Department of Mechanical Engineering, Engineering Faculty, Koç University, Istanbul 34450, Turkey
- School of Medical Services & Techniques, Dogus University, Istanbul 34775, Turkey
| | - Savas Tasoglu
- Koç University Translational Medicine Research Center (KUTTAM), Koç University, Istanbul 34450, Turkey
- Department of Mechanical Engineering, Engineering Faculty, Koç University, Istanbul 34450, Turkey
- Boğaziçi Institute of Biomedical Engineering, Boğaziçi University, Istanbul 34684, Turkey
- Koç University Arçelik Research Center for Creative Industries (KUAR), Koç University, Istanbul 34450, Turkey
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11
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Tian Z, Yang L, Qi X, Zheng Q, Shang D, Cao J. Visual LAMP method for the detection of Vibrio vulnificus in aquatic products and environmental water. BMC Microbiol 2022; 22:256. [PMID: 36271365 PMCID: PMC9585733 DOI: 10.1186/s12866-022-02656-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Accepted: 08/29/2022] [Indexed: 11/11/2022] Open
Abstract
Background A visual, rapid, simple method was developed based on a loop-mediated isothermal amplification (LAMP) assay to detect Vibrio vulnificus in aquatic products and aquaculture waters. Results Genomic DNA was extracted from Vibrio vulnificus using the boiling method, and optimized primers were used to detect the gyrB gene using a visual LAMP method. The sensitivity of the assay was 10 fg/μL, and the obtained results were stable and reliable. Out of 655 aquatic product samples and 558 aquaculture water samples, the positive rates of Vibrio vulnificus detection were 9.01% and 8.60%, respectively, which are markedly higher than those of the traditional culture identification methods. Conclusion The relatively simple technical requirements, low equipment cost, and rapid detection make the visual LAMP method for the detection of Vibrio vulnificus a convenient choice for field detection in the aquaculture industry.
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Affiliation(s)
- Zhuo Tian
- Liaoning Normal University, Dalian, 116023, China.,Key Laboratory of Biotechnology and Bioresources Utilization of Ministry of Education, Dalian Minzu University, Dalian, 116600, China.,Dalian Customs Technology Center, Dalian, 116001, China
| | - Lili Yang
- Key Laboratory of Biotechnology and Bioresources Utilization of Ministry of Education, Dalian Minzu University, Dalian, 116600, China
| | - Xin Qi
- Dalian Customs Technology Center, Dalian, 116001, China
| | - Qiuyue Zheng
- Key Laboratory of Biotechnology and Bioresources Utilization of Ministry of Education, Dalian Minzu University, Dalian, 116600, China
| | - Dejing Shang
- Liaoning Normal University, Dalian, 116023, China.
| | - Jijuan Cao
- Key Laboratory of Biotechnology and Bioresources Utilization of Ministry of Education, Dalian Minzu University, Dalian, 116600, China.
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12
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Loop mediated isothermal amplification for detection of foodborne parasites: A journey from lab to lab-on-a-chip. Food Control 2022. [DOI: 10.1016/j.foodcont.2022.109251] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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13
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A panoptic review of techniques for finfish disease diagnosis: The status quo and future perspectives. J Microbiol Methods 2022; 196:106477. [DOI: 10.1016/j.mimet.2022.106477] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Revised: 04/21/2022] [Accepted: 04/21/2022] [Indexed: 12/27/2022]
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14
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Xie Y, Dai L, Yang Y. Microfluidic technology and its application in the point-of-care testing field. BIOSENSORS & BIOELECTRONICS: X 2022; 10:100109. [PMID: 35075447 PMCID: PMC8769924 DOI: 10.1016/j.biosx.2022.100109] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2021] [Revised: 01/06/2022] [Accepted: 01/09/2022] [Indexed: 05/15/2023]
Abstract
Since the outbreak of the coronavirus disease 2019 (COVID-19), countries around the world have suffered heavy losses of life and property. The global pandemic poses a challenge to the global public health system, and public health organizations around the world are actively looking for ways to quickly and efficiently screen for viruses. Point-of-care testing (POCT), as a fast, portable, and instant detection method, is of great significance in infectious disease detection, disease screening, pre-disease prevention, postoperative treatment, and other fields. Microfluidic technology is a comprehensive technology that involves various interdisciplinary disciplines. It is also known as a lab-on-a-chip (LOC), and can concentrate biological and chemical experiments in traditional laboratories on a chip of several square centimeters with high integration. Therefore, microfluidic devices have become the primary implementation platform of POCT technology. POCT devices based on microfluidic technology combine the advantages of both POCT and microfluids, and are expected to shine in the biomedical field. This review introduces microfluidic technology and its applications in combination with other technologies.
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Affiliation(s)
- Yaping Xie
- Sansure Biotech Inc., Changsha, 410205, PR China
- School of Mechanical Science and Engineering, Huazhong University of Science and Technology, Wuhan, 430074, PR China
| | - Lizhong Dai
- Sansure Biotech Inc., Changsha, 410205, PR China
| | - Yijia Yang
- Sansure Biotech Inc., Changsha, 410205, PR China
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15
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Conventional and Microfluidic Methods for the Detection of Nucleic Acid of SARS-CoV-2. MICROMACHINES 2022; 13:mi13040636. [PMID: 35457940 PMCID: PMC9031662 DOI: 10.3390/mi13040636] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Revised: 04/09/2022] [Accepted: 04/12/2022] [Indexed: 12/23/2022]
Abstract
Nucleic acid testing (NAT) played a crucial role in containing the spread of SARS-CoV-2 during the epidemic. The gold standard technique, the quantitative real-time polymerase chain reaction (qRT-PCR) technique, is currently used by the government and medical boards to detect SARS-CoV-2. Due to the limitations of this technology, it is not capable of meeting the needs of large-scale rapid detection. To solve this problem, many new techniques for detecting nucleic acids of SARS-CoV-2 have been reported. Therefore, a review that systematically and comprehensively introduces and compares various detection technologies is needed. In this paper, we not only review the traditional NAT but also provide an overview of microfluidic-based NAT technologies and summarize and discuss the characteristics and development prospects of these techniques.
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16
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Natsuhara D, Saito R, Aonuma H, Sakurai T, Okamoto S, Nagai M, Kanuka H, Shibata T. A method of sequential liquid dispensing for the multiplexed genetic diagnosis of viral infections in a microfluidic device. LAB ON A CHIP 2021; 21:4779-4790. [PMID: 34812455 DOI: 10.1039/d1lc00829c] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
In this study, we introduce polydimethylsiloxane (PDMS)-based microfluidic devices capable of sequential dispensing of samples into multiple reaction microchambers in a single operation to provide a fast and easy sample-to-answer platform for multiplexed genetic diagnosis of multiple viral infectious diseases. This approach utilizes the loop-mediated isothermal amplification (LAMP) method to amplify and detect specific nucleic acid (DNA/RNA) targets. We present a microfluidic flow control theory for sequential liquid dispensing phenomena, which provides design guidelines for device optimization. The device specifications, such as the possible dispensing number and maximal allowable flow rate, can be theoretically designed by optimizing the geometric dimensions of the microchannels and a pair of passive stop valves integrated into each microchamber together with the water contact angles of the materials used to fabricate the microfluidic devices. In addition, a passive stop valve with a vertical-type phaseguide structure was designed to improve device performance. We could simultaneously diagnose coronavirus disease 2019 (COVID-19) and other infectious diseases, such as severe acute respiratory syndrome (SARS), seasonal influenza A, and pandemic influenza A (H1N1) 2009. The colorimetric reverse transcription LAMP (RT-LAMP) assay suggests that the four viral infectious diseases can be detected within 30 min using a hue-based quantitative analysis, and the naked eye using our microfluidic devices.
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Affiliation(s)
- Daigo Natsuhara
- Department of Mechanical Engineering, Toyohashi University of Technology, Aichi 441-8560, Japan.
| | - Ryogo Saito
- Department of Mechanical Engineering, Toyohashi University of Technology, Aichi 441-8560, Japan.
| | - Hiroka Aonuma
- Department of Tropical Medicine, The Jikei University School of Medicine, Tokyo, 105-8461, Japan
| | - Tatsuya Sakurai
- Laboratory Animal Facilities, The Jikei University School of Medicine, Tokyo, 105-8461, Japan
| | - Shunya Okamoto
- Department of Mechanical Engineering, Toyohashi University of Technology, Aichi 441-8560, Japan.
| | - Moeto Nagai
- Department of Mechanical Engineering, Toyohashi University of Technology, Aichi 441-8560, Japan.
| | - Hirotaka Kanuka
- Department of Tropical Medicine, The Jikei University School of Medicine, Tokyo, 105-8461, Japan
- Laboratory Animal Facilities, The Jikei University School of Medicine, Tokyo, 105-8461, Japan
| | - Takayuki Shibata
- Department of Mechanical Engineering, Toyohashi University of Technology, Aichi 441-8560, Japan.
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17
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Zhang LL, Li CH, Chen J. Molecular characterization and chemotaxis assay of a CC motif chemokine ligand 25 from Japanese sea bass (Lateolabrax japonicus). FISH & SHELLFISH IMMUNOLOGY 2021; 119:563-574. [PMID: 34687884 DOI: 10.1016/j.fsi.2021.10.031] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2021] [Revised: 10/19/2021] [Accepted: 10/20/2021] [Indexed: 06/13/2023]
Abstract
CC motif chemokine ligand 25 (CCL25) is a key chemokine that attracts various types of leukocytes, such as activated peritoneal macrophages. However, information on CCL25 in fish is limited. Here, a CCL25 gene (LjCCL25) was identified from Japanese sea bass (Lateolabrax japonicus), showing upregulation in multiple tissues against Vibrio harveyi infection. The recombinant LjCCL25 (rLjCCL25) only significantly induced the migration of monocytes/macrophages (MO/MΦ) both in vitro and in vivo, but didn't induce that of neutrophils or lymphocytes. Additionally, rLjCCL25 only induced migration of the lipopolysaccharide-stimulated MO/MΦ (M1 type). Knockdown of Japanese sea bass CC chemokine receptor 9 (LjCCR9) expression in MO/MФ by RNA interference inhibited the LjCCL25-induced chemotaxis of resting and M1 type MO/MФ. Moreover, administration of 300 ng/g rLjCCL25 effectively increased the survival of V. harveyi-infected fish and decreased bacterial load. Our study demonstrates that LjCCL25 functions as an MO/MФ chemoattractant via LjCCR9 in Japanese sea bass against V. harveyi.
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Affiliation(s)
- Ling-Ling Zhang
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Ningbo University, Ningbo, 315211, China; Laboratory of Biochemistry and Molecular Biology, School of Marine Sciences, Meishan Campus, Ningbo University, Ningbo, 315832, China; Key Laboratory of Applied Marine Biotechnology of Ministry of Education, Meishan Campus, Ningbo University, Ningbo, 315832, China
| | - Chang-Hong Li
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Ningbo University, Ningbo, 315211, China; Laboratory of Biochemistry and Molecular Biology, School of Marine Sciences, Meishan Campus, Ningbo University, Ningbo, 315832, China; Key Laboratory of Applied Marine Biotechnology of Ministry of Education, Meishan Campus, Ningbo University, Ningbo, 315832, China.
| | - Jiong Chen
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Ningbo University, Ningbo, 315211, China; Laboratory of Biochemistry and Molecular Biology, School of Marine Sciences, Meishan Campus, Ningbo University, Ningbo, 315832, China; Key Laboratory of Applied Marine Biotechnology of Ministry of Education, Meishan Campus, Ningbo University, Ningbo, 315832, China.
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18
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Jin J, Duan L, Fu J, Chai F, Zhou Q, Wang Y, Shao X, Wang L, Yan M, Su X, Zhang Y, Pan J, Chen J. A real-time LAMP-based dual-sample microfluidic chip for rapid and simultaneous detection of multiple waterborne pathogenic bacteria from coastal waters. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2021; 13:2710-2721. [PMID: 34041513 DOI: 10.1039/d1ay00492a] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Waterborne pathogens are becoming a serious worldwide health hazard; thus, the regular monitoring of epidemic pathogens is urgently required for public safety. In the present study, we developed a microfluidic chip integrated loop-mediated isothermal amplification technique (on-chip LAMP) to simultaneously detect 10 waterborne pathogenic bacteria, Campylobacter jejuni, Listeria monocytogenes, Salmonella enterica, Shigella flexneri, Staphylococcus aureus, Vibrio alginolyticus, V. cholerae, V. parahemolyticus, V. vulnificus, and Yersinia enterocolitica. This method was capable of simultaneously completing 22 genetic analyses of two specimens and achieved limits of detection ranging from 7.92 × 10-3 to 9.54 × 10-1 pg of genomic DNA of pure bacteria per reaction. The processes from sample loading to microfluidic operation were in a highly automated format, and the LAMP reaction ran to completion within 35 minutes, with a minimal volume of 22 μl per each half of a single chip. The coefficient of variation for the time-to-positive value was less than 0.1, indicating an excellent reproducibility of the dual-sample on-chip LAMP assay. The clinical sensitivity and specificity in analyses of coastal water samples were 93.1% and 98.0%, respectively, in comparison with traditional microbiological methods. Our established dual-sample on-chip LAMP assay provides an effective multiple-pathogen analysis of waterborne bacterial pathogens. This indicates that the method is applicable for on-site detection and routine monitoring of waterborne bacteria in aquatic environments.
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Affiliation(s)
- Jinglei Jin
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Ningbo University, Ningbo, 315211, China and School of Marine Sciences, Ningbo University, Ningbo 315832, China.
| | - Lijun Duan
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Ningbo University, Ningbo, 315211, China and School of Marine Sciences, Ningbo University, Ningbo 315832, China. and Ningbo Haishu District Animal Husbandry and Veterinary Medicine Technical Management Service Station, Ningbo 315153, China
| | - Jiali Fu
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Ningbo University, Ningbo, 315211, China and School of Marine Sciences, Ningbo University, Ningbo 315832, China.
| | - Fangchao Chai
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Ningbo University, Ningbo, 315211, China and School of Marine Sciences, Ningbo University, Ningbo 315832, China.
| | - Qianjin Zhou
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Ningbo University, Ningbo, 315211, China and School of Marine Sciences, Ningbo University, Ningbo 315832, China.
| | - Yaohua Wang
- Zhejiang Key Laboratory of Exploitation and Preservation of Coastal Bio-resource, Zhejiang Mariculture Research Institute, Wenzhou 325005, China
| | - Xinbin Shao
- Zhejiang Key Laboratory of Exploitation and Preservation of Coastal Bio-resource, Zhejiang Mariculture Research Institute, Wenzhou 325005, China
| | - Lei Wang
- CapitalBio Corporation, 18 Life Science Parkway, Changping District, Beijing 102206, China
| | - Maocang Yan
- Zhejiang Key Laboratory of Exploitation and Preservation of Coastal Bio-resource, Zhejiang Mariculture Research Institute, Wenzhou 325005, China
| | - Xiurong Su
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Ningbo University, Ningbo, 315211, China and School of Marine Sciences, Ningbo University, Ningbo 315832, China.
| | - Yanjun Zhang
- Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou 310009, China
| | - Junhang Pan
- Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou 310009, China
| | - Jiong Chen
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Ningbo University, Ningbo, 315211, China and School of Marine Sciences, Ningbo University, Ningbo 315832, China. and Key Laboratory of Applied Marine Biotechnology of Ministry of Education, Ningbo University, Ningbo 315211, China
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19
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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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20
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Uddin SM, Sayad A, Chan J, Huynh DH, Skafidas E, Kwan P. Heater Integrated Lab-on-a-Chip Device for Rapid HLA Alleles Amplification towards Prevention of Drug Hypersensitivity. SENSORS (BASEL, SWITZERLAND) 2021; 21:3413. [PMID: 34068416 PMCID: PMC8153606 DOI: 10.3390/s21103413] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Revised: 05/10/2021] [Accepted: 05/10/2021] [Indexed: 12/16/2022]
Abstract
HLA-B*15:02 screening before administering carbamazepine is recommended to prevent life-threatening hypersensitivity. However, the unavailability of a point-of-care device impedes this screening process. Our research group previously developed a two-step HLA-B*15:02 detection technique utilizing loop-mediated isothermal amplification (LAMP) on the tube, which requires two-stage device development to translate into a portable platform. Here, we report a heater-integrated lab-on-a-chip device for the LAMP amplification, which can rapidly detect HLA-B alleles colorimetrically. A gold-patterned micro-sized heater was integrated into a 3D-printed chip, allowing microfluidic pumping, valving, and incubation. The performance of the chip was tested with color dye. Then LAMP assay was conducted with human genomic DNA samples of known HLA-B genotypes in the LAMP-chip parallel with the tube assay. The LAMP-on-chip results showed a complete match with the LAMP-on-tube assay, demonstrating the detection system's concurrence.
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Affiliation(s)
- Shah Mukim Uddin
- Department of Medicine, The University of Melbourne, Royal Melbourne Hospital, Melbourne, VIC 3050, Australia; (S.M.U.); (J.C.); (D.H.H.); (E.S.)
| | - Abkar Sayad
- Department of Neuroscience, Central Clinical School, Monash University, Melbourne, VIC 3004, Australia;
| | - Jianxiong Chan
- Department of Medicine, The University of Melbourne, Royal Melbourne Hospital, Melbourne, VIC 3050, Australia; (S.M.U.); (J.C.); (D.H.H.); (E.S.)
- Department of Neuroscience, Central Clinical School, Monash University, Melbourne, VIC 3004, Australia;
| | - Duc Hau Huynh
- Department of Medicine, The University of Melbourne, Royal Melbourne Hospital, Melbourne, VIC 3050, Australia; (S.M.U.); (J.C.); (D.H.H.); (E.S.)
| | - Efstratios Skafidas
- Department of Medicine, The University of Melbourne, Royal Melbourne Hospital, Melbourne, VIC 3050, Australia; (S.M.U.); (J.C.); (D.H.H.); (E.S.)
- Department of Electrical and Electronic Engineering, Melbourne School of Engineering, The University of Melbourne, Melbourne, VIC 3010, Australia
| | - Patrick Kwan
- Department of Medicine, The University of Melbourne, Royal Melbourne Hospital, Melbourne, VIC 3050, Australia; (S.M.U.); (J.C.); (D.H.H.); (E.S.)
- Department of Neuroscience, Central Clinical School, Monash University, Melbourne, VIC 3004, Australia;
- Department of Electrical and Electronic Engineering, Melbourne School of Engineering, The University of Melbourne, Melbourne, VIC 3010, Australia
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21
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Zhou QJ, Lu JF, Su XR, Jin JL, Li SY, Zhou Y, Wang L, Shao XB, Wang YH, Yan MC, Li MY, Chen J. Simultaneous detection of multiple bacterial and viral aquatic pathogens using a fluorogenic loop-mediated isothermal amplification-based dual-sample microfluidic chip. JOURNAL OF FISH DISEASES 2021; 44:401-413. [PMID: 33340375 DOI: 10.1111/jfd.13325] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2020] [Revised: 12/02/2020] [Accepted: 12/07/2020] [Indexed: 06/12/2023]
Abstract
Rapid and user-friendly diagnostic tests are necessary for early diagnosis and immediate detection of diseases, particularly for on-site screening of pathogenic microorganisms in aquaculture. In this study, we developed a dual-sample microfluidic chip integrated with a real-time fluorogenic loop-mediated isothermal amplification assay (dual-sample on-chip LAMP) to simultaneously detect 10 pathogenic microorganisms, that is Aeromonas hydrophila, Edwardsiella tarda, Vibrio harveyi, V. alginolyticus, V. anguillarum, V. parahaemolyticus, V. vulnificus, infectious hypodermal and haematopoietic necrosis virus, infectious spleen and kidney necrosis virus, and white spot syndrome virus. This on-chip LAMP provided a nearly automated protocol that can analyse two samples simultaneously, and the tests achieved limits of detection (LOD) ranging from 100 to 10-1 pg/μl for genomic DNA of tested bacteria and 10-4 to 10-5 pg/μl for recombinant plasmid DNA of tested viruses, with run times averaging less than 30 min. The coefficient of variation for the time-to-positive value was less than 10%, reflecting a robust reproducibility. The clinical sensitivity and specificity were 93.52% and 85.53%, respectively, compared to conventional microbiological or clinical methods. The on-chip LAMP assay provides an effective dual-sample and multiple pathogen analysis, and thus would be applicable to on-site detection and routine monitoring of multiple pathogens in aquaculture.
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Affiliation(s)
- Qian-Jin Zhou
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Ningbo University, Ningbo, China
- School of Marine Sciences, Ningbo University, Ningbo, China
| | - Jian-Fei Lu
- School of Marine Sciences, Ningbo University, Ningbo, China
| | - Xiu-Rong Su
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Ningbo University, Ningbo, China
- School of Marine Sciences, Ningbo University, Ningbo, China
| | - Jing-Lei Jin
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Ningbo University, Ningbo, China
- School of Marine Sciences, Ningbo University, Ningbo, China
| | - Shang-Yang Li
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Ningbo University, Ningbo, China
- School of Marine Sciences, Ningbo University, Ningbo, China
| | - Yan Zhou
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Ningbo University, Ningbo, China
- School of Marine Sciences, Ningbo University, Ningbo, China
| | - Lei Wang
- CapitalBio Corporation, Beijing, China
| | - Xin-Bin Shao
- Zhejiang Mariculture Research Institute, Wenzhou, China
| | - Yao-Hua Wang
- Zhejiang Mariculture Research Institute, Wenzhou, China
| | - Mao-Cang Yan
- Zhejiang Mariculture Research Institute, Wenzhou, China
| | - Ming-Yun Li
- School of Marine Sciences, Ningbo University, Ningbo, China
| | - Jiong Chen
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Ningbo University, Ningbo, China
- School of Marine Sciences, Ningbo University, Ningbo, China
- Key Laboratory of Applied Marine Biotechnology of Ministry of Education, Ningbo University, Ningbo, China
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22
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Xie C, Chen S, Zhang L, He X, Ma Y, Wu H, Zou B, Zhou G. Multiplex detection of blood-borne pathogens on a self-driven microfluidic chip using loop-mediated isothermal amplification. Anal Bioanal Chem 2021; 413:2923-2931. [PMID: 33712918 DOI: 10.1007/s00216-021-03224-8] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Revised: 02/02/2021] [Accepted: 02/06/2021] [Indexed: 01/13/2023]
Abstract
Detection of blood-borne pathogens such as hepatitis C virus (HCV), hepatitis B virus (HBV) and human immunodeficiency virus (HIV) is essential to ensure the safety of blood transfusion. However, traditional PCR-based pathogen nucleic acid detection methods require relatively high experimental facilities and are difficult to apply in areas with limited resources. In this study, a self-driven microfluidic chip was designed to carry out multiplex detection of HBV, HCV and HIV by using loop-mediated isothermal amplification (LAMP). Benefitting from the air permeability of the polydimethylsiloxane material, the chip could accomplish sample loading within 12 min driven by the pressure difference between the reaction chambers and vacuum chambers in the chip without using pumps or any injection devices. Multiplex detection is achieved by presetting LAMP primers specific to different targets in different reaction chambers. Calcein was used as an indicator to indicate the positive amplification reaction, and the result can be recorded by a smartphone camera. After 50 min of isothermal amplification at 63 °C, 2 copies/μL of HBV, HCV and HIV target nucleic acids could be detected. The results of HBV detection of 20 clinical plasma samples by using the chip are consistent with that of the qPCR-based kit, indicating that the LAMP-based self-driven chip has the clinical application potential for blood-borne pathogen detection, especially in resource-limited areas.
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Affiliation(s)
- Chunmei Xie
- Department of Clinical Pharmacy, Jinling Hospital, Medical School of Nanjing University, Nanjing, 210002, Jiangsu, China
| | - Shan Chen
- Department of Clinical Pharmacy, Jinling Hospital, Medical School of Nanjing University, Nanjing, 210002, Jiangsu, China
| | - Likun Zhang
- Department of Clinical Pharmacy, Jinling Hospital, Medical School of Nanjing University, Nanjing, 210002, Jiangsu, China
| | - Xiangpeng He
- Department of Clinical Pharmacy, Jinling Hospital, Medical School of Nanjing University, Nanjing, 210002, Jiangsu, China
| | - Yi Ma
- Department of Clinical Pharmacy, Jinling Hospital, Medical School of Nanjing University, Nanjing, 210002, Jiangsu, China
| | - Haiping Wu
- Department of Clinical Pharmacy, Jinling Hospital, Medical School of Nanjing University, Nanjing, 210002, Jiangsu, China.
| | - Bingjie Zou
- Department of Clinical Pharmacy, Jinling Hospital, Medical School of Nanjing University, Nanjing, 210002, Jiangsu, China.
- State Key Laboratory of Analytical Chemistry for Life Science, Nanjing University, Nanjing, 210093, Jiangsu, China.
| | - Guohua Zhou
- Department of Clinical Pharmacy, Jinling Hospital, Medical School of Nanjing University, Nanjing, 210002, Jiangsu, China.
- State Key Laboratory of Analytical Chemistry for Life Science, Nanjing University, Nanjing, 210093, Jiangsu, China.
- School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, 510515, Guangdong, China.
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Li SY, Shu M, Zhong C, Chen H, Bi Y, Hou PF, Wu GP. Characterization and Kinetic Study of Bentonite-Coated Activated Carbon for Adsorption of DNA Polymerase Inhibitors to Improve the Detection Sensitivity of Salmonella Derived from Vegetables by Rti-LAMP. FOOD ANAL METHOD 2020. [DOI: 10.1007/s12161-020-01814-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Zhong R, Liu S, Wang X, Zhang G, Gong N, Wang M, Sun Y. A real-time isothermal amplification based portable microfluidic system for simple and reliable detection of Vibrio splendidus. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2020; 12:2985-2994. [PMID: 32930158 DOI: 10.1039/d0ay00566e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The spread of infectious diseases among aquaculture species has a serious impact on the aquaculture industry. Simple, specific and low-cost detection methods are urgently needed for early diagnosis and timely treatment, particularly for on-site identifying and tracking of pathogens. Vibrio splendidus (V. splendidus) is regarded as one of the main pathogenic bacteria causing skin ulcerative syndrome in cultured sea cucumbers, leading to massive mortality and severe economic losses. We herein present a microfluidic-based real-time fluorogenic loop-mediated isothermal amplification (LAMP) system for simple and reliable detection of V. splendidus. A LAMP primer set with six primers (arsB1) specifically targeting the arsB gene of V. splendidus was successfully designed and tested on the portable microfluidic system for the first time. Only a single step of sample loading using a pipette is required to fill an array of reaction wells (with 10 or 18 wells) in a disposable chip for multiplex detection. A dedicated plastic shell is then utilized to tightly seal the openings of the chip by buckling to prevent contamination and evaporation. Up to four chips (one sample per chip) can be held in the stand-alone and inexpensive microdevice simultaneously, enabling on-demand detection of multiple samples in a single run. Reproducible (relatively low intra- and inter-chip variability) and sensitive (as few as ∼20 CFU, Colony-Forming Units, per reaction well) on-chip arsB1-LAMP assay was demonstrated by using diluted lysate of V. splendidus. A linear standard curve (R2 > 0.98) was attained over the template concentration range of 5 × 103 to 5 × 106 CFU mL-1. V. splendidus can be detected in samples containing different bacteria, indicating the feasibility of the portable microfluidic LAMP system for parallel detection of multiple bacterial pathogens. The proposed on-chip LAMP assay is simple to operate, reliable for amplification, flexible in detection and cost-effective in instrumentation and testing, holding great potential for on-site rapid detection and routine monitoring of aquaculture pathogens.
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Affiliation(s)
- Runtao Zhong
- Institute of Environmental Systems Biology, Dalian Maritime University, 1 Linghai Road, Dalian 116026, China.
| | - Shilin Liu
- Institute of Environmental Systems Biology, Dalian Maritime University, 1 Linghai Road, Dalian 116026, China.
| | - Xiaohui Wang
- Dalian University, Dalian Economic & Technical Development Zone, Dalian 116622, China
| | - Guohao Zhang
- Beijing Baicare Biotechnology Co., Ltd., Zhongguancun Life Science Park, Beijing 102206, China
| | - Ning Gong
- Institute of Environmental Systems Biology, Dalian Maritime University, 1 Linghai Road, Dalian 116026, China.
| | - Mengyu Wang
- Institute of Environmental Systems Biology, Dalian Maritime University, 1 Linghai Road, Dalian 116026, China.
| | - Yeqing Sun
- Institute of Environmental Systems Biology, Dalian Maritime University, 1 Linghai Road, Dalian 116026, China.
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Zhang K, Liu Y, Yang X, Sun H, Shu X, Zhang Y, Cao H, Wu M, Liu N, Zou Y, Xu Q, Li G. HBV promotes the recruitment of IL-17 secreting T cells via chemokines CCL22 and CCL17. Liver Int 2020; 40:1327-1338. [PMID: 32187823 DOI: 10.1111/liv.14438] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/19/2019] [Revised: 02/29/2020] [Accepted: 03/03/2020] [Indexed: 12/12/2022]
Abstract
BACKGROUND AND AIMS Little is known about the mechanisms of IL-17 secreting T cells accumulation in HBV-transfected livers. Here, we investigated the role of the chemokines CCL17, CCL20 and CCL22 in this process. METHODS Peripheral blood and liver tissues were obtained from 30 chronic hepatitis B (CHB) patients and 15 healthy volunteers and were evaluated by flow cytometric analysis and immunohistochemistry. Chemokine production by monocyte-derived dendritic cells (MoDCs) cocultured with HBV-transfected or untransfected Huh7 cells was measured by quantitative real-time PCR and enzyme-linked immunosorbent assay. The chemotactic activity of the culture supernatants was also tested. RESULTS The proportions of IL-17 secreting CD4 (Th17) and CD8 (Tc17) T cells were both increased in liver and peripheral blood mononuclear cells of CHB patients compared to those in HVs. CHB patients showed higher intrahepatic levels of CCL17 mRNA, CCL22 mRNA, CCR6 mRNA and CCR4 mRNA than HVs. The expression of CCR6 and CCR4 on the surface of Th17 and Tc17 cells in CHB patients was also significantly higher than that in HVs. Significant correlations existed between the CCR4/CCR6 levels and both the alanine transaminase levels and HBV DNA loads. Contact between MoDCs and pBlue-HBV-transfected Huh7 cells induced the expression of CCL17 and CCL22 dependent on the dose of HBV DNA. However, CCL20 expression was lower in CHB patients than in HVs. Transwell experiments showed that upregulation of CCL17 and CCL22 enhanced the migration of IL-17 secreting T cells. CONCLUSIONS Contact of HBV-transfected cells with MoDCs induces CCL17 and CCL22 chemokine production, which may favour the recruitment of Th17 and Tc17 cells to liver tissue in CHB. Our results reveal the mechanism of IL-17 secreting T cells recruitment to liver tissue and thus provide new immunotherapy targets for CHB patients.
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Affiliation(s)
- Ka Zhang
- Department of Infectious Diseases, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, P. R. China
| | - Yanqiong Liu
- Department of Infectious Diseases, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, P. R. China
| | - Xiaoan Yang
- Department of Infectious Diseases, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, P. R. China
| | - Haixia Sun
- Department of Infectious Diseases, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, P. R. China
| | - Xin Shu
- Department of Infectious Diseases, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, P. R. China
| | - Yeqiong Zhang
- Department of Infectious Diseases, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, P. R. China
| | - Hong Cao
- Department of Infectious Diseases, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, P. R. China
| | - Mengdi Wu
- General Practice Center, Nanhai Hospital, Southern Medical University, Foshan, P. R. China
| | - Nan Liu
- General Practice Center, Nanhai Hospital, Southern Medical University, Foshan, P. R. China
| | - Yong Zou
- Department of Blood Transfusion, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, P. R. China
| | - Qihuan Xu
- Department of Infectious Diseases, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, P. R. China
| | - Gang Li
- Department of Infectious Diseases, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, P. R. China
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Natsuhara D, Takishita K, Tanaka K, Kage A, Suzuki R, Mizukami Y, Saka N, Nagai M, Shibata T. A Microfluidic Diagnostic Device Capable of Autonomous Sample Mixing and Dispensing for the Simultaneous Genetic Detection of Multiple Plant Viruses. MICROMACHINES 2020; 11:mi11060540. [PMID: 32466570 PMCID: PMC7344993 DOI: 10.3390/mi11060540] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/04/2020] [Revised: 05/23/2020] [Accepted: 05/25/2020] [Indexed: 01/08/2023]
Abstract
As an efficient approach to risk management in agriculture, the elimination of losses due to plant diseases and insect pests is one of the most important and urgent technological challenges for improving the crop yield. Therefore, we have developed a polydimethylsiloxane (PDMS)-based microfluidic device for the multiplex genetic diagnosis of plant diseases and pests. It offers unique features, such as rapid detection, portability, simplicity, and the low-cost genetic diagnosis of a wide variety of plant viruses. In this study, to realize such a diagnostic device, we developed a method for the autonomous dispensing of fluid into a microchamber array, which was integrated with a set of three passive stop valves with different burst pressures (referred to as phaseguides) to facilitate precise fluid handling. Additionally, we estimated the mixing efficiencies of several types of passive mixers (referred to as chaotic mixers), which were integrated into a microchannel, through experimental and computational analyses. We first demonstrated the ability of the fabricated diagnostic devices to detect DNA-based plant viruses from an infected tomato crop based on the loop-mediated isothermal amplification (LAMP) method. Moreover, we demonstrated the simultaneous detection of RNA-based plant viruses, which can infect cucurbits, by using the reverse transcription LAMP (RT-LAMP) method. The multiplex RT-LAMP assays revealed that multiple RNA viruses extracted from diseased cucumber leaves were successfully detected within 60 min, without any cross-contamination between reaction microchambers, on our diagnostic device.
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Affiliation(s)
- Daigo Natsuhara
- Department of Mechanical Engineering, Toyohashi University of Technology, Toyohashi, Aichi 441-8560, Japan; (K.T.); (K.T.); (A.K.); (M.N.)
- Correspondence: (D.N.); (T.S.)
| | - Keisuke Takishita
- Department of Mechanical Engineering, Toyohashi University of Technology, Toyohashi, Aichi 441-8560, Japan; (K.T.); (K.T.); (A.K.); (M.N.)
| | - Kisuke Tanaka
- Department of Mechanical Engineering, Toyohashi University of Technology, Toyohashi, Aichi 441-8560, Japan; (K.T.); (K.T.); (A.K.); (M.N.)
| | - Azusa Kage
- Department of Mechanical Engineering, Toyohashi University of Technology, Toyohashi, Aichi 441-8560, Japan; (K.T.); (K.T.); (A.K.); (M.N.)
| | - Ryoji Suzuki
- Agro-Environmental Division, Aichi Agricultural Research Center, Nagakute, Aichi 480-1193, Japan; (R.S.); (Y.M.); (N.S.)
| | - Yuko Mizukami
- Agro-Environmental Division, Aichi Agricultural Research Center, Nagakute, Aichi 480-1193, Japan; (R.S.); (Y.M.); (N.S.)
| | - Norikuni Saka
- Agro-Environmental Division, Aichi Agricultural Research Center, Nagakute, Aichi 480-1193, Japan; (R.S.); (Y.M.); (N.S.)
| | - Moeto Nagai
- Department of Mechanical Engineering, Toyohashi University of Technology, Toyohashi, Aichi 441-8560, Japan; (K.T.); (K.T.); (A.K.); (M.N.)
| | - Takayuki Shibata
- Department of Mechanical Engineering, Toyohashi University of Technology, Toyohashi, Aichi 441-8560, Japan; (K.T.); (K.T.); (A.K.); (M.N.)
- Correspondence: (D.N.); (T.S.)
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Zhou Y, Zhou QJ, Qiao Y, Chen J, Li MY. The host defense peptide β-defensin confers protection against Vibrio anguillarum in ayu, Plecoglossus altivelis. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2020; 103:103511. [PMID: 31580833 DOI: 10.1016/j.dci.2019.103511] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2019] [Revised: 09/27/2019] [Accepted: 09/27/2019] [Indexed: 06/10/2023]
Abstract
β-defensin is a cationic host defense peptide actively participating in host innate immune response against pathogens. In teleost fish, β-defensin exhibits a diversity in genotypes and functions. Herein, a β-defensin homolog (PaBD) was identified from ayu, Plecoglossus altivelis, showing multiple tissues' upregulation against Vibrio anguillarum challenge. In vivo experiments revealed that intraperitoneal injection of chemically synthesized mature PaBD (mPaBD) increased the survival rate of V. anguillarum-infected ayu, accompanied by reduced bacterial load and decreased tissue mRNA levels of tumor necrosis factor α (PaTNF-α) and interleukin 1β (PaIL-1β). However, in vitro, mPaBD showed weak bactericidal activity against V. anguillarum. Interestingly, mPaBD enhanced phagocytosis, intracellular bacterial killing, and respiratory burst of ayu monocytes/macrophages (MO/MΦ). Moreover, it inhibited mRNA levels of PaIL-1β and PaTNF-α in MO/MФ upon V. anguillarum infection. In conclusion, PaBD protects ayu against V. anguillarum challenge not only through its direct antibacterial ability, but also through its immunomodulation in MO/MΦ.
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Affiliation(s)
- Yan Zhou
- State Key Laboratory for Quality and Safety of Agro-products, Ningbo University, Ningbo, 315211, China; Laboratory of Biochemistry and Molecular Biology, School of Marine Sciences, Ningbo University, Ningbo, 315832, China
| | - Qian-Jin Zhou
- State Key Laboratory for Quality and Safety of Agro-products, Ningbo University, Ningbo, 315211, China; Laboratory of Biochemistry and Molecular Biology, School of Marine Sciences, Ningbo University, Ningbo, 315832, China
| | - Yan Qiao
- Laboratory of Biochemistry and Molecular Biology, School of Marine Sciences, Ningbo University, Ningbo, 315832, China
| | - Jiong Chen
- State Key Laboratory for Quality and Safety of Agro-products, Ningbo University, Ningbo, 315211, China; Laboratory of Biochemistry and Molecular Biology, School of Marine Sciences, Ningbo University, Ningbo, 315832, China; Key Laboratory of Applied Marine Biotechnology of Ministry of Education, Ningbo University, Ningbo, 315832, China.
| | - Ming-Yun Li
- Laboratory of Biochemistry and Molecular Biology, School of Marine Sciences, Ningbo University, Ningbo, 315832, China
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Li R, Chen J, Zhang X, Cui J, Tao S, Yang L. Mini-Disk Capillary Array Coupling with LAMP for Visual Detection of Multiple Nucleic Acids using Genetically Modified Organism Analysis as an Example. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2020; 68:899-906. [PMID: 31891505 DOI: 10.1021/acs.jafc.9b06979] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Convenient, portable, and low-cost multiplex nucleic acid testing (NAT) systems are the trends in the fields of food safety, environmental microorganisms, molecular diagnosis, etc. In this study, we developed a novel system for visual monitoring of multiple nucleic acids combining a mini-disk capillary array (diameter = 17 mm, embedded with 6-10 capillaries), visual loop-mediated isothermal amplification (LAMP), and quick DNA extraction called mDC-LAMP. The performance and applicability of mDC-LAMP in testing multiple nucleic acids were evaluated and verified employing genetically modified contents analysis as an example. All of the results confirmed that mDC-LAMP has the advantages of high specificity without any cross contamination, high sensitivity with a limit of detection of 25 copies/reaction, high throughput with flexible channel sensors, easy fabrication, and low costs. We believe that mDC-LAMP is a competitive choice for on-spot monitoring of multiple nucleic acids in terms of the easy fabrication/operation, low costs, and suitable performance presented in the nucleic acids test.
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Affiliation(s)
- Rong Li
- Joint International Research Laboratory of Metabolic and Developmental Sciences, School of Life Sciences and Biotechnology , Shanghai Jiao Tong University , Shanghai 200240 , China
| | - Jianwei Chen
- Shanghai Center for Systems Biomedicine, Key Laboratory of Systems Biomedicine (Ministry of Education), State Key Laboratory of Oncogenes and Related Genes, School of Biomedical Engineering , Shanghai Jiao Tong University , Shanghai 200240 , China
| | - Xiujie Zhang
- Development Center of Science and Technology , Ministry of Agriculture of People's Republic of China , Beijing 100025 , China
| | - Jingjie Cui
- Institute of Cotton Research , Chinese Academy of Agricultural Sciences/State Key Laboratory of Cotton Biology , Anyang 455000 , Henan , China
| | - Shengce Tao
- Shanghai Center for Systems Biomedicine, Key Laboratory of Systems Biomedicine (Ministry of Education), State Key Laboratory of Oncogenes and Related Genes, School of Biomedical Engineering , Shanghai Jiao Tong University , Shanghai 200240 , China
| | - Litao Yang
- Joint International Research Laboratory of Metabolic and Developmental Sciences, School of Life Sciences and Biotechnology , Shanghai Jiao Tong University , Shanghai 200240 , China
- Institute of Cotton Research , Chinese Academy of Agricultural Sciences/State Key Laboratory of Cotton Biology , Anyang 455000 , Henan , China
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Xu F, Li MY, Chen J. D-dopachrome tautomerase from Japanese sea bass ( Lateolabrax japonicus) is a chemokine-like cytokine and functional homolog of macrophage migration inhibitory factor. Zool Res 2020; 41:39-50. [PMID: 31709785 PMCID: PMC6956724 DOI: 10.24272/j.issn.2095-8137.2020.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
D-dopachrome tautomerase (DDT), a member of the macrophage migration inhibitory factor (MIF) protein superfamily, is a newly described cytokine with chemokine-like characteristics. However, research on fish DDT remains limited. In this study, we identified a DDT homolog (LjDDT) from the Japanese sea bass, Lateolabrax japonicus. Sequence analysis showed that LjDDT had typical sequence features of known DDT and MIF homologs and was most closely related to DDT of rock bream ( Oplegnathus fasciatus). LjDDT transcripts were detected in all tested tissues of healthy Japanese sea bass, with the highest expression found in the liver. Upon infection with Vibrio harveyi, LjDDT transcripts were significantly down-regulated in the three tested tissues, including the liver, spleen, and head kidney. Recombinant LjDDT (rLjDDT) and the corresponding antibody (anti-rLjDDT) were subsequently prepared. The administration of 100 μg/g anti-rLjDDT had a statistically significant protective effect on the survival of V. harveyi-infected fish. Moreover, rLjDDT was able to induce the migration of monocytes/macrophages (MO/MФ) and lymphocytes both in vitro and in vivo, but without significant influence on the migration of neutrophils. rLjDDT exhibited chemotactic activity for lipopolysaccharide (LPS) -stimulated M1-type MO/ MΦ in vitro, but not for cAMP-stimulated M2-type MO/MΦ. Furthermore, the knockdown of LjCD74, but not LjCXCR4, significantly down-regulated the rLjDDT-enhanced migration of MO/MΦ and relieved the rLjMIF-inhibited migration of MO/MΦ. These results indicate that LjCD74 may be the major chemotactic receptor of LjDDT and LjMIF in Japanese sea bass MO/MΦ. Combined rLjDDT+ rLjMIF treatment had no significant effect on the migration of MsiRNA, LjCD74si-, or LjCXCR4sitreated MO/MΦ compared to the control group, suggesting that the roles of LjDDT and LjMIF may be antagonistic. In conclusion, our study demonstrates for the first time that DDT may play a role in the immune responses of fish against bacterial infection through chemotactic recruitment of MO/MΦ via mediation of CD74 as an antagonist of MIF.
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Affiliation(s)
- Feng Xu
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, Ningbo University, Ningbo, Zhejiang 315211, China.,Laboratory of Biochemistry and Molecular Biology, School of Marine Sciences, Ningbo University, Ningbo, Zhejiang 315832, China
| | - Ming-Yun Li
- Laboratory of Biochemistry and Molecular Biology, School of Marine Sciences, Ningbo University, Ningbo, Zhejiang 315832, China
| | - Jiong Chen
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, Ningbo University, Ningbo, Zhejiang 315211, China.,Laboratory of Biochemistry and Molecular Biology, School of Marine Sciences, Ningbo University, Ningbo, Zhejiang 315832, China.,Key Laboratory of Applied Marine Biotechnology of Ministry of Education, Ningbo University, Ningbo, Zhejiang 315832, China. E-mail: ;
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30
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Zhong R, Liu S, Zhang G, Wang M, Sun Y. iso-μmGene: an isothermal amplification-based portable microfluidic system for simple, reliable and flexibly multiplexed genetic identification and quantification. Analyst 2020; 145:4627-4636. [DOI: 10.1039/d0an00560f] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We present a portable microfluidic LAMP system (iso-μmGene) with features of multi-well chips for convenient filling and reliable sealing, flexible detection throughput, and stand-alone and well-performing point of care device for genetic testing.
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Affiliation(s)
- Runtao Zhong
- Institute of Environmental Systems Biology
- Dalian Maritime University
- Dalian 116026
- China
| | - Shilin Liu
- Institute of Environmental Systems Biology
- Dalian Maritime University
- Dalian 116026
- China
| | - Guohao Zhang
- Beijing Baicare Biotechnology Co
- Ltd
- Beijing 102206
- China
| | - Mengyu Wang
- Institute of Environmental Systems Biology
- Dalian Maritime University
- Dalian 116026
- China
| | - Yeqing Sun
- Institute of Environmental Systems Biology
- Dalian Maritime University
- Dalian 116026
- China
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A Simple and Multiplex Loop-Mediated Isothermal Amplification (LAMP) Assay for Rapid Detection of SARS-CoV. BIOCHIP JOURNAL 2019; 13:341-351. [PMID: 32226589 PMCID: PMC7097549 DOI: 10.1007/s13206-019-3404-3] [Citation(s) in RCA: 51] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 07/15/2019] [Accepted: 08/23/2019] [Indexed: 12/29/2022]
Abstract
The current diagnosis of severe acute respiratory syndrome-associated coronavirus (SARS-CoV) relies on laboratory-based tests since its clinical features are nonspecific, unlike other respiratory pathogens. Therefore, the development of a rapid and simple method for on-site detection of SARS-CoV is crucial for the identification and prevention of future SARS outbreaks. In this study, a simple colorimetric and multiplex loop-mediated isothermal amplification (LAMP) assay was developed to rapid screening of severe acute respiratory syndrome-associated coronavirus (SARS-CoV). It can be visually detected based on color change and monitored in real-time with fluorescent signals. The performance of this assay, based on six primers targeting open reading frame (ORF1b) and nucleocapsid (N) genes located in different regions of the SARS-CoV, was compared with real-time RT-PCR assay using various concentrations of target genes. The detection limit of the LAMP assay was comparable to that of real-time RT-PCR assay and therefore a few target RNA to 104-105 copies could be detected within a short period of time (20–25 min). In addition, we established a multiplex real-time LAMP assay to simultaneously detect two target regions within the SARS-CoV genome. Two target sequences were amplified by specific primers in the same reaction tube and revealed that it was able to detect down to 105 copies. The standard curve had a linear relationship with similar amplification efficiencies. The LAMP assay results in shorter “sample-to-answer” time than conventional PCR method. Therefore, it is suitable not only for diagnosis of clinical test, but also for surveillance of SARS virus in developing countries.
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Gorgannezhad L, Stratton H, Nguyen NT. Microfluidic-Based Nucleic Acid Amplification Systems in Microbiology. MICROMACHINES 2019; 10:E408. [PMID: 31248141 PMCID: PMC6630468 DOI: 10.3390/mi10060408] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/27/2019] [Revised: 06/14/2019] [Accepted: 06/17/2019] [Indexed: 02/07/2023]
Abstract
Rapid, sensitive, and selective bacterial detection is a hot topic, because the progress in this research area has had a broad range of applications. Novel and innovative strategies for detection and identification of bacterial nucleic acids are important for practical applications. Microfluidics is an emerging technology that only requires small amounts of liquid samples. Microfluidic devices allow for rapid advances in microbiology, enabling access to methods of amplifying nucleic acid molecules and overcoming difficulties faced by conventional. In this review, we summarize the recent progress in microfluidics-based polymerase chain reaction devices for the detection of nucleic acid biomarkers. The paper also discusses the recent development of isothermal nucleic acid amplification and droplet-based microfluidics devices. We discuss recent microfluidic techniques for sample preparation prior to the amplification process.
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Affiliation(s)
- Lena Gorgannezhad
- Queensland Micro- and Nanotechnology Centre, Nathan Campus, Griffith University, 170 Kessels Road, Brisbane QLD 4111, Australia.
- School of Environment and Science, Nathan Campus, Griffith University, 170 Kessels Road, Brisbane QLD 4111, Australia.
| | - Helen Stratton
- School of Environment and Science, Nathan Campus, Griffith University, 170 Kessels Road, Brisbane QLD 4111, Australia.
| | - Nam-Trung Nguyen
- Queensland Micro- and Nanotechnology Centre, Nathan Campus, Griffith University, 170 Kessels Road, Brisbane QLD 4111, Australia.
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Li R, Gai W, Zhu D, Lok C, Song C, Dong J, Han N, Zhang Y, Zhao X. Evaluation of a novel micro/nanofluidic chip platform for the detection of influenza A and B virus in patients with influenza-like illness. AMB Express 2019; 9:77. [PMID: 31139958 PMCID: PMC6538719 DOI: 10.1186/s13568-019-0791-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2019] [Accepted: 05/06/2019] [Indexed: 01/23/2023] Open
Abstract
We introduced a novel micro/nanofluidic chip platform (MNCP), which is based on an isothermal nucleic acid amplification method. This study aimed to evaluate the MNCP method for influenza A and B viruses detecting and subtyping using throat swab samples from patients with influenza-like illness (ILI). A total of 266 throat swab samples from 266 non-repeated patients with ILI were tested for influenza A and B viruses using three methods, MNCP, a rapid influenza diagnostic test (RIDT), and real-time reverse transcription polymerase chain reaction (rRT-PCR). The results of MNCP were compared to those obtained by rRT-PCR and RIDT and the performance of MNCP was further evaluated. Compared with rRT-PCR results, the rates of sensitivity, specificity, overall concordance, and the kappa value of MNCP were 98.89%, 96.97%, 97.65%, and 0.95 for influenza A virus; 94.95%, 99.38%, 97.68%, and 0.95 for influenza B virus, respectively. Subtypes of influenza A viruses, e.g., A(H1N1)pdm09, A(H3N2), and A(not subtyped), and influenza B viruses could be distinguished in one MNCP assay within 1 h. Compared with rRT-PCR and MNCP, RIDT showed poor clinical sensitivity for influenza virus detection. This study showed MNCP is rapid, sensitive and versatile detecting system with potential for clinical application in pathogen diagnosis for patients with ILI.
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Zheng F, Wang P, Du Q, Chen Y, Liu N. Simultaneous and Ultrasensitive Detection of Foodborne Bacteria by Gold Nanoparticles-Amplified Microcantilever Array Biosensor. Front Chem 2019; 7:232. [PMID: 31065549 PMCID: PMC6489696 DOI: 10.3389/fchem.2019.00232] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2018] [Accepted: 03/25/2019] [Indexed: 11/17/2022] Open
Abstract
Foodborne pathogens, especially bacteria, are explicitly threatening public health worldwide. Biosensors represent advances in rapid diagnosis with high sensitivity and selectivity. However, multiplexed analysis and minimal pretreatment are still challenging. We fabricate a gold nanoparticle (Au NP)-amplified microcantilever array biosensor that is capable of determining ultralow concentrations of foodborne bacteria including Escherichia coli O157:H7, Vibrio parahaemolyticus, Salmonella, Staphylococcus aureus, Listeria monocytogenes, Shigella, etc. The method is much faster than using conventional tools without germiculturing and PCR amplification. The six pairs of ssDNA probes (ssDNA1 + ssDNA2 partially complementary to the target gene) that originated from the sequence analysis of the specific gene of the bacteria were developed and validated. The ssDNA1 probes were modified with -S-(CH2)6 at the 5′-end and ready to immobilize on the self-assembled monolayers (SAMs) of the sensing cantilevers in the array and couple with Au NPs, while 6-mercapto-1-hexanol SAM modification was carried out on the reference cantilevers to eliminate the interferences by detecting the deflection from the environment induced by non-specific interactions. For multianalyte sensing, the target gene sequence was captured by the ssDNA2-Au NPs in the solution, and then the Au NPs-ssDNA2-target complex was hybridized with ssNDA1 fixed on the beam of the cantilever sensor, which results in a secondary cascade amplification effect. Integrated with the enrichment of the Au NP platform and the microcantilever array sensor detection, multiple bacteria could be rapidly and accurately determined as low as 1–9 cells/mL, and the working ranges were three to four orders of magnitude. There was virtually no cross-reaction among the various probes with different species. As described herein, it holds great potential for rapid, multiplexed, and ultrasensitive detection in food, environment, clinical, and communal samples.
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Affiliation(s)
- Fengjiao Zheng
- General Practice Center, Nanhai Hospital, Southern Medical University, Foshan, China.,Department of Clinical Laboratory, The Air Force Hospital of Southern Theater Command of PLA, Guangzhou, China
| | - Peixi Wang
- General Practice Center, Nanhai Hospital, Southern Medical University, Foshan, China
| | - Qingfeng Du
- General Practice Center, Nanhai Hospital, Southern Medical University, Foshan, China
| | - Yiping Chen
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Nan Liu
- General Practice Center, Nanhai Hospital, Southern Medical University, Foshan, China
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35
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Zhou W, Le J, Chen Y, Cai Y, Hong Z, Chai Y. Recent advances in microfluidic devices for bacteria and fungus research. Trends Analyt Chem 2019. [DOI: 10.1016/j.trac.2018.12.024] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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36
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Nie L, Cai SY, Sun J, Chen J. MicroRNA-155 promotes pro-inflammatory functions and augments apoptosis of monocytes/macrophages during Vibrio anguillarum infection in ayu, Plecoglossus altivelis. FISH & SHELLFISH IMMUNOLOGY 2019; 86:70-81. [PMID: 30447432 DOI: 10.1016/j.fsi.2018.11.030] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/03/2018] [Revised: 11/07/2018] [Accepted: 11/13/2018] [Indexed: 06/09/2023]
Abstract
Upon recognition of pathogen-associated molecular patterns by pattern-recognition receptors, immune cells are recruited, and multiple antibacterial/viral signaling pathways are activated, leading to the production of immune-related cytokines, chemokines, and interferons along with further activation of the adaptive immune response. MicroRNAs (miRs) play essential roles in regulating such immune signaling pathways, as well as the biological activities of immune cells; however, knowledge regarding the roles of miRs in the immune-related function of monocytes/macrophages (MO/MΦ) remains limited in teleosts. In the present study, we addressed the effects of miR-155 on Vibrio anguillarum-infected MO/MΦ. Our results showed that miR-155 augmented MO/MΦ expression of proinflammatory cytokines and attenuated the expression of anti-inflammatory cytokines. Additionally, the phagocytosis and bacteria-killing abilities of these cells were boosted by miR-155 administration, which also promoted M1-type polarization but inhibited M2-type polarization. Furthermore, the V. anguillarum-infection-induced apoptosis was also enhanced by miR-155 mimic transfection, which might have been due to excessive inflammation or the accumulation of reactive oxygen species. These results represent the first report providing a detailed account of the regulatory roles of miR-155 on MO/MΦ functions in teleosts and offer insight into the evolutionary history of miR-155-mediated regulation of host immune responses.
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Affiliation(s)
- Li Nie
- Laboratory of Biochemistry and Molecular Biology, School of Marine Sciences, Meishan Campus, Ningbo University, Ningbo, 315800, China
| | - Shi-Yu Cai
- Laboratory of Biochemistry and Molecular Biology, School of Marine Sciences, Meishan Campus, Ningbo University, Ningbo, 315800, China
| | - Jiao Sun
- Laboratory of Biochemistry and Molecular Biology, School of Marine Sciences, Meishan Campus, Ningbo University, Ningbo, 315800, China
| | - Jiong Chen
- Laboratory of Biochemistry and Molecular Biology, School of Marine Sciences, Meishan Campus, Ningbo University, Ningbo, 315800, China; Key Laboratory of Applied Marine Biotechnology of Ministry of Education, Meishan Campus, Ningbo University, Ningbo, 315800, China.
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Shang Y, Sun J, Ye Y, Zhang J, Zhang Y, Sun X. Loop-mediated isothermal amplification-based microfluidic chip for pathogen detection. Crit Rev Food Sci Nutr 2018; 60:201-224. [DOI: 10.1080/10408398.2018.1518897] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Yuting Shang
- State Key Laboratory of Food Science and Technology School of Food Science National Engineering Research Center for Functional Foods, Synergetic Innovation Center of Food Safety, Joint International Research Laboratory on Food Safety, Jiangnan University, Wuxi, Jiangsu, China
| | - Jiadi Sun
- State Key Laboratory of Food Science and Technology School of Food Science National Engineering Research Center for Functional Foods, Synergetic Innovation Center of Food Safety, Joint International Research Laboratory on Food Safety, Jiangnan University, Wuxi, Jiangsu, China
| | - Yongli Ye
- State Key Laboratory of Food Science and Technology School of Food Science National Engineering Research Center for Functional Foods, Synergetic Innovation Center of Food Safety, Joint International Research Laboratory on Food Safety, Jiangnan University, Wuxi, Jiangsu, China
| | - Jumei Zhang
- Guangdong Institute of Microbiology, State Key Laboratory of Applied Microbiology Southern China Guangdong Provincial Key Laboratory of Microbiology Culture Collection and Application Guangdong Open Laboratory of Applied Microbiology, Guangzhou, China
| | - Yinzhi Zhang
- State Key Laboratory of Food Science and Technology School of Food Science National Engineering Research Center for Functional Foods, Synergetic Innovation Center of Food Safety, Joint International Research Laboratory on Food Safety, Jiangnan University, Wuxi, Jiangsu, China
| | - Xiulan Sun
- State Key Laboratory of Food Science and Technology School of Food Science National Engineering Research Center for Functional Foods, Synergetic Innovation Center of Food Safety, Joint International Research Laboratory on Food Safety, Jiangnan University, Wuxi, Jiangsu, China
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38
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Liu H, Lu XJ, Chen J. Full-length and a smaller globular fragment of adiponectin have opposite roles in regulating monocyte/macrophage functions in ayu, Plecoglossus altivelis. FISH & SHELLFISH IMMUNOLOGY 2018; 82:319-329. [PMID: 30130657 DOI: 10.1016/j.fsi.2018.08.041] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2018] [Revised: 08/17/2018] [Accepted: 08/18/2018] [Indexed: 06/08/2023]
Abstract
Adiponectin (ADP), a regulator of the innate immune system, plays a role in the progression of inflammation and metabolic disorders in mammals. However, the role of ADP in fish is poorly understood. Here, we cloned the cDNA sequence of a ADP homolog (PaADP) gene from ayu. Multiple sequence alignment revealed that PaADP presented typical characteristics of ADPs. Phylogenetic tree analysis showed that PaADP was most closely related to that of rainbow trout. In healthy ayu, the transcripts of PaADP were detected in most of the tested tissues and cells, with the highest level in the adipose tissue. Upon V. anguillarum infection, the mRNA expression of PaADP was significantly up-regulated in the tissues and cells except adipose tissue. Subsequently, the full-length mature PaADP (fPaADP) and the globular domain fragment (gPaADP) were prokaryotically expressed in bacteria and purified, and anti-PaADP antibodies were produced. Western blot analysis revealed that three fragments including fPaADP and gPaADP were existed in ayu serum. The recombinant fPaADP (rfPaADP) had an anti-inflammatory effect on ayu MO/MФ by upregulating anti-inflammatory cytokine expressions, downregulating pro-inflammatory cytokine expressions, inhibiting the phagocytosis and subsequent bacterial killing. In contrast, the recombinant gPaADP (rgPaADP) presented a pro-inflammatory effect on ayu MO/MФ by upregulating pro-inflammatory cytokine expression, downregulating anti-inflammatory cytokine expressions, enhancing the phagocytosis and subsequent bacterial killing. These results suggested that fPaADP and gPaADP have opposite roles in the regulation of MO/MФ functions in ayu.
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Affiliation(s)
- He Liu
- Laboratory of Biochemistry and Molecular Biology, School of Marine Sciences, Ningbo University, Ningbo 315211, China
| | - Xin-Jiang Lu
- Laboratory of Biochemistry and Molecular Biology, School of Marine Sciences, Ningbo University, Ningbo 315211, China
| | - Jiong Chen
- Laboratory of Biochemistry and Molecular Biology, School of Marine Sciences, Ningbo University, Ningbo 315211, China; Key Laboratory of Applied Marine Biotechnology of Ministry of Education, Ningbo University, Ningbo 315211, China.
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Yuan H, Chao Y, Li S, Tang MYH, Huang Y, Che Y, Wong AST, Zhang T, Shum HC. Picoinjection-Enabled Multitarget Loop-Mediated Isothermal Amplification for Detection of Foodborne Pathogens. Anal Chem 2018; 90:13173-13177. [PMID: 30354065 DOI: 10.1021/acs.analchem.8b03673] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
In this study, we develop a method to detect multiple DNAs of foodborne pathogens by encapsulating emulsion droplets for loop-mediated isothermal amplification (LAMP). In contrast to the traditional bulk-phase LAMP, which involves a labor-intensive mixing process, with our method, different primers are automatically mixed with DNA samples and LAMP buffers after picoinjection. By directly observing and analyzing the fluorescence intensity of the resultant droplets, one can detect DNA from different pathogens, with a detection limit 500 times lower than that obtained by bulk-phase LAMP. We further demonstrate the ability to quantify bacteria concentration by detecting bacterial DNA in practical samples, showing great potential in monitoring water resources and their contamination by pathogenic bacteria.
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Affiliation(s)
- Hao Yuan
- HKU-Shenzhen Institute of Research and Innovation (HKU-SIRI) , Shenzhen , Guangdong 518057 , China.,Department of Mechanical Engineering , The University of Hong Kong , Pokfulam Road , Hong Kong SAR , China
| | - Youchuang Chao
- HKU-Shenzhen Institute of Research and Innovation (HKU-SIRI) , Shenzhen , Guangdong 518057 , China.,Department of Mechanical Engineering , The University of Hong Kong , Pokfulam Road , Hong Kong SAR , China
| | - ShanShan Li
- School of Biological Sciences , The University of Hong Kong , Pokfulam Road , Hong Kong SAR , China
| | - Matthew Y H Tang
- HKU-Shenzhen Institute of Research and Innovation (HKU-SIRI) , Shenzhen , Guangdong 518057 , China.,Department of Mechanical Engineering , The University of Hong Kong , Pokfulam Road , Hong Kong SAR , China
| | - Yue Huang
- Centre for Environmental Engineering Research, Department of Civil Engineering , The University of Hong Kong , Pokfulam Road , Hong Kong SAR , China
| | - You Che
- Centre for Environmental Engineering Research, Department of Civil Engineering , The University of Hong Kong , Pokfulam Road , Hong Kong SAR , China
| | - Alice S T Wong
- School of Biological Sciences , The University of Hong Kong , Pokfulam Road , Hong Kong SAR , China
| | - Tong Zhang
- Centre for Environmental Engineering Research, Department of Civil Engineering , The University of Hong Kong , Pokfulam Road , Hong Kong SAR , China
| | - Ho Cheung Shum
- HKU-Shenzhen Institute of Research and Innovation (HKU-SIRI) , Shenzhen , Guangdong 518057 , China.,Department of Mechanical Engineering , The University of Hong Kong , Pokfulam Road , Hong Kong SAR , China
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Ning YJ, Lu XJ, Chen J. Molecular characterization of a tissue factor gene from ayu: A pro-inflammatory mediator via regulating monocytes/macrophages. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2018; 84:37-47. [PMID: 29408399 DOI: 10.1016/j.dci.2018.02.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2017] [Revised: 02/01/2018] [Accepted: 02/01/2018] [Indexed: 06/07/2023]
Abstract
Tissue factor (TF) plays an important role in the host's immune system as the principal initiator of coagulation. However, the precise function of TF in teleosts remains unclear. We determined the cDNA sequence of TF from ayu Plecoglossus altivelis (PaTF). The PaTF transcript was expressed in all tested tissues, and changes in expression were observed in tissues and monocytes/macrophages (MO/MФ) upon infection with Vibrio anguillarum. PaTF was prokaryotically expressed and purified to prepare anti-PaTF antibodies. Western blot analysis revealed that native PaTF was glycosylated in thrombocytes, but not in ayu MO/MФ. Microparticles could transfer PaTF to thrombocytes. PaTF neutralization or knockdown led to anti-inflammatory status in ayu MO/MФ upon V. anguillarum infection. PaTF neutralization reduced the apoptosis of ayu MO/MФ and improve survival rate in V. anguillarum-infected ayu. Our results indicate that PaTF plays a role in ayu immune response against bacterial infection as a pro-inflammatory mediator.
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Affiliation(s)
- Ying-Jun Ning
- Laboratory of Biochemistry and Molecular Biology, School of Marine Sciences, Ningbo University, Ningbo, 315211, China
| | - Xin-Jiang Lu
- Laboratory of Biochemistry and Molecular Biology, School of Marine Sciences, Ningbo University, Ningbo, 315211, China; Key Laboratory of Applied Marine Biotechnology of Ministry of Education, Ningbo University, Ningbo, 315211, China
| | - Jiong Chen
- Laboratory of Biochemistry and Molecular Biology, School of Marine Sciences, Ningbo University, Ningbo, 315211, China; Key Laboratory of Applied Marine Biotechnology of Ministry of Education, Ningbo University, Ningbo, 315211, China.
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41
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Zhang L, Tian F, Liu C, Feng Q, Ma T, Zhao Z, Li T, Jiang X, Sun J. Hand-powered centrifugal microfluidic platform inspired by the spinning top for sample-to-answer diagnostics of nucleic acids. LAB ON A CHIP 2018; 18:610-619. [PMID: 29379939 DOI: 10.1039/c7lc01234a] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Point-of-care (POC), sample-to-answer and electricity-free nucleic acid diagnostic tools are vital for health care and disease control in resource-limited settings where centralized medical facilities or even electric power may remain unreliable. Inspired by one of the oldest recognizable toys, the spinning top, here we report a fully hand-powered centrifugal microfluidic platform for the diagnostics of pathogenic bacteria. Assay procedures such as zeolite-based purification of nucleic acids, loop-mediated isothermal amplification (LAMP) and visual detection of fluorescence signals are integrated into a single microfluidic disc. A simple pull-out operation of the top rack of the customized centrifuge initiates high-speed rotation of the disc, resulting in efficient actuation and mixing of preloaded sample/reagent fluids. This microfluidic platform enables the simultaneous detection of six kinds of pathogenic bacteria within a small disc in an electricity-free manner, showing great promise in sample-to-answer nucleic acid detection in remote settings.
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Affiliation(s)
- Lu Zhang
- Department of Chemistry, Capital Normal University, Beijing 100048, P. R. China.
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42
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Chen F, Lu XJ, Nie L, Ning YJ, Chen J. Molecular characterization of a CC motif chemokine 19-like gene in ayu (Plecoglossus altivelis) and its role in leukocyte trafficking. FISH & SHELLFISH IMMUNOLOGY 2018; 72:301-308. [PMID: 29128493 DOI: 10.1016/j.fsi.2017.11.012] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2017] [Revised: 10/30/2017] [Accepted: 11/07/2017] [Indexed: 06/07/2023]
Abstract
The CC motif chemokine 19 (CCL19) functions in acute inflammation by recruiting lymphocytes and other cells. However, CCL19 has only been investigated in few fish species. In this study, we characterized a CCL19-like molecule (PaCCL19l) in ayu (Plecoglossus altivelis), a teleost fish. Sequence analysis revealed that PaCCL19l was most closely related to Atlantic salmon (Salmon salar) CCL19l1, which belonged to the fish CCL19a.1 subcluster. PaCCL19l was constitutively expressed in the tested ayu tissues and peripheral blood mononuclear cells (PBMCs), with the highest transcript level in PBMCs. Upon infection with Vibrio anguillarum, the expressions of PaCCL19l in the head kidney, liver, spleen, PBMCs, and monocytes/macrophages (MO/MΦ) were dramatically up-regulated. Recombinant PaCCL19l (rPaCCL19l) exhibited a significant effect on the chemotaxis of lymphocytes and MO/MΦ in vitro and in vivo. Meanwhile, rPaCCL19l exerted a high chemotaxic activity for lipopolysaccharide (LPS)-stimulated MO/MΦ (M1-type), but not for cyclic adenosine monophosphate (cAMP)-stimulated MO/MΦ (M2-type). When ayu MO/MΦ was treated with rPaCCL19l along with Vibrio anguillarum infection, the mRNA expression of proinflammatory cytokines (IL-1β, TNFα, IL-6, IL-12b, and IFN-γ) was up-regulated, while that of anti-inflammatory cytokines (IL-10, TGFβ, and IL-22) was down-regulated. Ayu MO/MΦ treated with anti-PaCCL19l IgG gave the opposite result. These results implicated that PaCCL19l is involved in the selective chemotaxis of ayu immune cells and promotes the host at a pro-inflammatory state.
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Affiliation(s)
- Feng Chen
- Laboratory of Biochemistry and Molecular Biology, School of Marine Sciences, Ningbo University, Ningbo 315211, China
| | - Xin-Jiang Lu
- Laboratory of Biochemistry and Molecular Biology, School of Marine Sciences, Ningbo University, Ningbo 315211, China; Key Laboratory of Applied Marine Biotechnology of Ministry of Education, Ningbo University, Ningbo 315211, China
| | - Li Nie
- Laboratory of Biochemistry and Molecular Biology, School of Marine Sciences, Ningbo University, Ningbo 315211, China; Key Laboratory of Applied Marine Biotechnology of Ministry of Education, Ningbo University, Ningbo 315211, China
| | - Ying-Jun Ning
- Laboratory of Biochemistry and Molecular Biology, School of Marine Sciences, Ningbo University, Ningbo 315211, China
| | - Jiong Chen
- Laboratory of Biochemistry and Molecular Biology, School of Marine Sciences, Ningbo University, Ningbo 315211, China; Key Laboratory of Applied Marine Biotechnology of Ministry of Education, Ningbo University, Ningbo 315211, China.
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Zhou QJ, Chai FC, Chen J. First record of Glugea plecoglossi (Takahashi & Egusa, 1977), a microsporidian parasite of ayu (Plecoglossus altivelis altivelis Temminck & Schlegel, 1846) in Mainland China. JOURNAL OF FISH DISEASES 2018; 41:165-169. [PMID: 28707704 DOI: 10.1111/jfd.12674] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2017] [Revised: 05/27/2017] [Accepted: 05/29/2017] [Indexed: 06/07/2023]
Affiliation(s)
- Q J Zhou
- Laboratory of Biochemistry and Molecular Biology, School of Marine Sciences, Ningbo University, Ningbo, China
| | - F C Chai
- Laboratory of Biochemistry and Molecular Biology, School of Marine Sciences, Ningbo University, Ningbo, China
| | - J Chen
- Laboratory of Biochemistry and Molecular Biology, School of Marine Sciences, Ningbo University, Ningbo, China
- Key Laboratory of Applied Marine Biotechnology of Ministry of Education, Ningbo University, Ningbo, China
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Pang B, Ding X, Wang G, Zhao C, Xu Y, Fu K, Sun J, Song X, Wu W, Liu Y, Song Q, Hu J, Li J, Mu Y. Rapid and Quantitative Detection of Vibrio parahemolyticus by the Mixed-Dye-Based Loop-Mediated Isothermal Amplification Assay on a Self-Priming Compartmentalization Microfluidic Chip. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2017; 65:11312-11319. [PMID: 29198118 DOI: 10.1021/acs.jafc.7b03655] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Vibrio parahemolyticus (VP) mostly isolated from aquatic products is one of the major causes of bacterial food-poisoning events worldwide, which could be reduced using a promising on-site detection method. Herein, a rapid and quantitative method for VP detection was developed by applying a mixed-dye-loaded loop-mediated isothermal amplification (LAMP) assay on a self-priming compartmentalization (SPC) microfluidic chip, termed on-chip mixed-dye-based LAMP (CMD-LAMP). In comparison to conventional approaches, CMD-LAMP was advantageous on the limit of detection, which reached down to 1 × 103 CFU/mL in food-contaminated samples without the pre-enrichment of bacteria. Additionally, as a result of the use of a mixed dye and SPC chip, the quantitative result could be easily acquired, avoiding the requirement of sophisticated instruments and tedious operation. Also, CMD-LAMP was rapid and cost-effective. Conclusively, CMD-LAMP has great potential in realizing the on-site quantitative analysis of VP for food safety.
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Affiliation(s)
- Bo Pang
- Department of Hygienic Inspection, School of Public Health, Jilin University , Changchun, Jilin 130021, People's Republic of China
| | - Xiong Ding
- Research Center for Analytical Instrumentation, Institute of Cyber-Systems and Control, State Key Laboratory of Industrial Control Technology, Zhejiang University , Hangzhou, Zhejiang 310058, People's Republic of China
| | - Guoping Wang
- Research Center for Analytical Instrumentation, Institute of Cyber-Systems and Control, State Key Laboratory of Industrial Control Technology, Zhejiang University , Hangzhou, Zhejiang 310058, People's Republic of China
| | - Chao Zhao
- Department of Hygienic Inspection, School of Public Health, Jilin University , Changchun, Jilin 130021, People's Republic of China
| | - Yanan Xu
- Research Center for Analytical Instrumentation, Institute of Cyber-Systems and Control, State Key Laboratory of Industrial Control Technology, Zhejiang University , Hangzhou, Zhejiang 310058, People's Republic of China
| | - Kaiyue Fu
- Department of Hygienic Inspection, School of Public Health, Jilin University , Changchun, Jilin 130021, People's Republic of China
| | - Jingjing Sun
- Research Center for Analytical Instrumentation, Institute of Cyber-Systems and Control, State Key Laboratory of Industrial Control Technology, Zhejiang University , Hangzhou, Zhejiang 310058, People's Republic of China
| | - Xiuling Song
- Department of Hygienic Inspection, School of Public Health, Jilin University , Changchun, Jilin 130021, People's Republic of China
| | - Wenshuai Wu
- Research Center for Analytical Instrumentation, Institute of Cyber-Systems and Control, State Key Laboratory of Industrial Control Technology, Zhejiang University , Hangzhou, Zhejiang 310058, People's Republic of China
| | - Yushen Liu
- Department of Hygienic Inspection, School of Public Health, Jilin University , Changchun, Jilin 130021, People's Republic of China
| | - Qi Song
- Research Center for Analytical Instrumentation, Institute of Cyber-Systems and Control, State Key Laboratory of Industrial Control Technology, Zhejiang University , Hangzhou, Zhejiang 310058, People's Republic of China
| | - Jiumei Hu
- Research Center for Analytical Instrumentation, Institute of Cyber-Systems and Control, State Key Laboratory of Industrial Control Technology, Zhejiang University , Hangzhou, Zhejiang 310058, People's Republic of China
| | - Juan Li
- Department of Hygienic Inspection, School of Public Health, Jilin University , Changchun, Jilin 130021, People's Republic of China
| | - Ying Mu
- Research Center for Analytical Instrumentation, Institute of Cyber-Systems and Control, State Key Laboratory of Industrial Control Technology, Zhejiang University , Hangzhou, Zhejiang 310058, People's Republic of China
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Basha IHK, Ho ETW, Yousuff CM, Hamid NHB. Towards Multiplex Molecular Diagnosis-A Review of Microfluidic Genomics Technologies. MICROMACHINES 2017; 8:E266. [PMID: 30400456 PMCID: PMC6190060 DOI: 10.3390/mi8090266] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/15/2017] [Revised: 06/30/2017] [Accepted: 07/16/2017] [Indexed: 12/21/2022]
Abstract
Highly sensitive and specific pathogen diagnosis is essential for correct and timely treatment of infectious diseases, especially virulent strains, in people. Point-of-care pathogen diagnosis can be a tremendous help in managing disease outbreaks as well as in routine healthcare settings. Infectious pathogens can be identified with high specificity using molecular methods. A plethora of microfluidic innovations in recent years have now made it increasingly feasible to develop portable, robust, accurate, and sensitive genomic diagnostic devices for deployment at the point of care. However, improving processing time, multiplexed detection, sensitivity and limit of detection, specificity, and ease of deployment in resource-limited settings are ongoing challenges. This review outlines recent techniques in microfluidic genomic diagnosis and devices with a focus on integrating them into a lab on a chip that will lead towards the development of multiplexed point-of-care devices of high sensitivity and specificity.
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Affiliation(s)
- Ismail Hussain Kamal Basha
- Department of Electrical and Electronic Engineering, Universiti Teknologi PETRONAS, 32610 Seri Iskandar, Perak Darul Ridzuan, Malaysia.
| | - Eric Tatt Wei Ho
- Department of Electrical and Electronic Engineering, Universiti Teknologi PETRONAS, 32610 Seri Iskandar, Perak Darul Ridzuan, Malaysia.
| | - Caffiyar Mohamed Yousuff
- Department of Electrical and Electronic Engineering, Universiti Teknologi PETRONAS, 32610 Seri Iskandar, Perak Darul Ridzuan, Malaysia.
| | - Nor Hisham Bin Hamid
- Department of Electrical and Electronic Engineering, Universiti Teknologi PETRONAS, 32610 Seri Iskandar, Perak Darul Ridzuan, Malaysia.
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Chemical Cell Lysis System Applicable to Lab-on-a-Disc. Appl Biochem Biotechnol 2017; 183:20-29. [DOI: 10.1007/s12010-017-2428-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2016] [Accepted: 01/24/2017] [Indexed: 01/06/2023]
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47
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Ahrberg CD, Manz A, Chung BG. Polymerase chain reaction in microfluidic devices. LAB ON A CHIP 2016; 16:3866-3884. [PMID: 27713993 DOI: 10.1039/c6lc00984k] [Citation(s) in RCA: 138] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
The invention of the polymerase chain reaction (PCR) has caused a revolution in molecular biology, giving access to a method of amplifying deoxyribonucleic acid (DNA) molecules across several orders of magnitude. Since the first application of PCR in a microfluidic device was developed in 1998, an increasing number of researchers have continued the development of microfluidic PCR systems. In this review, we introduce recent developments in microfluidic-based space and time domain devices as well as discuss various designs integrated with multiple functions for sample preparation and detection. The development of isothermal nucleic acid amplification and digital PCR microfluidic devices within the last five years is also highlighted. Furthermore, we introduce various commercial microfluidic PCR devices.
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Affiliation(s)
| | - Andreas Manz
- Microfluidics group, KIST-Europe, Saarbrücken, Germany and Mechanotronics Department, Universität des Saarlandes, Saarbrücken, Germany
| | - Bong Geun Chung
- Department of Mechanical Engineering, Sogang University, Seoul, Korea.
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48
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Microfluidic Devices for Forensic DNA Analysis: A Review. BIOSENSORS-BASEL 2016; 6:bios6030041. [PMID: 27527231 PMCID: PMC5039660 DOI: 10.3390/bios6030041] [Citation(s) in RCA: 76] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/08/2016] [Revised: 07/07/2016] [Accepted: 07/25/2016] [Indexed: 12/16/2022]
Abstract
Microfluidic devices may offer various advantages for forensic DNA analysis, such as reduced risk of contamination, shorter analysis time and direct application at the crime scene. Microfluidic chip technology has already proven to be functional and effective within medical applications, such as for point-of-care use. In the forensic field, one may expect microfluidic technology to become particularly relevant for the analysis of biological traces containing human DNA. This would require a number of consecutive steps, including sample work up, DNA amplification and detection, as well as secure storage of the sample. This article provides an extensive overview of microfluidic devices for cell lysis, DNA extraction and purification, DNA amplification and detection and analysis techniques for DNA. Topics to be discussed are polymerase chain reaction (PCR) on-chip, digital PCR (dPCR), isothermal amplification on-chip, chip materials, integrated devices and commercially available techniques. A critical overview of the opportunities and challenges of the use of chips is discussed, and developments made in forensic DNA analysis over the past 10–20 years with microfluidic systems are described. Areas in which further research is needed are indicated in a future outlook.
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49
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Chen SX, Ma HL, Shi YH, Li MY, Chen J. Molecular and functional characterization of a novel CD302 gene from ayu (Plecoglossus altivelis). FISH & SHELLFISH IMMUNOLOGY 2016; 55:140-148. [PMID: 27235369 DOI: 10.1016/j.fsi.2016.05.022] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2016] [Revised: 04/27/2016] [Accepted: 05/20/2016] [Indexed: 06/05/2023]
Abstract
Recognizing the presence of invading pathogens by pattern recognition receptors (PRRs) is key to mounting an effective innate immune response. Mammalian CD302 is an unconventional C-type lectin like receptor (CTLR) involved in the functional regulation of immune cells. However, the role of CD302 in fish remains unclear. In this study, we characterized a novel CD302 gene from ayu (Plecoglossus altivelis), which was tentatively named PaCD302. The cDNA sequence of PaCD302 is 1893 nucleotides in length, and encodes a polypeptide of 241 amino acids with molecular weight 27.1 kDa and pI 4.69. Sequence comparison and phylogenetic tree analysis showed that PaCD302 is a type I transmembrane CTLR devoid of the known amino acid residues essential for Ca(2+)-dependent sugar binding. PaCD302 mRNA expression was detected in all tissues and cells tested, with the highest level in the liver. Following Vibrio anguillarum infection, PaCD302 mRNA expression was significantly upregulated in all tissues tested. For further functional analysis, we generated a recombinant protein for PaCD302 (rPaCD302) by prokaryotic expression and raised a specific antibody against rPaCD302. Western blot analysis revealed that the native PaCD302 is glycosylated. Refolded rPaCD302 was unable to bind to five monosaccharides (l-fucose, d-galactose, d-glucose, d-mannose and N-acetyl glucosamine) or two other polysaccharides (lipopolysaccharide and peptidoglycan). It was able to bind to three Gram-positive and seven Gram-negative bacteria, but show no bacterial agglutinating activity. PaCD302 function blocking using anti-PaCD302 IgG resulted in inhibition of phagocytosis and bactericidal activity of ayu monocytes/macrophages (MO/MΦ), suggesting that PaCD302 regulates the function of ayu MO/MΦ. In summary, our study demonstrates that PaCD302 may participate in the immune response of ayu against bacterial infection via modulation of MO/MΦ function.
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MESH Headings
- Amino Acid Sequence
- Animals
- Cloning, Molecular
- DNA, Complementary/genetics
- DNA, Complementary/metabolism
- Fish Diseases/genetics
- Fish Diseases/immunology
- Fish Diseases/microbiology
- Fish Proteins/chemistry
- Fish Proteins/genetics
- Fish Proteins/metabolism
- Gene Expression Regulation
- Immunity, Innate
- Lectins, C-Type/chemistry
- Lectins, C-Type/genetics
- Lectins, C-Type/metabolism
- Macrophages/immunology
- Monocytes/immunology
- Osmeriformes
- Phylogeny
- RNA, Messenger/genetics
- RNA, Messenger/metabolism
- Receptors, Cell Surface/chemistry
- Receptors, Cell Surface/genetics
- Receptors, Cell Surface/metabolism
- Sequence Alignment/veterinary
- Vibrio/physiology
- Vibrio Infections/genetics
- Vibrio Infections/immunology
- Vibrio Infections/microbiology
- Vibrio Infections/veterinary
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Affiliation(s)
- Shen-Xue Chen
- Laboratory of Biochemistry and Molecular Biology, School of Marine Sciences, Ningbo University, Ningbo 315211, China
| | - Hai-Ling Ma
- Laboratory of Biochemistry and Molecular Biology, School of Marine Sciences, Ningbo University, Ningbo 315211, China
| | - Yu-Hong Shi
- Laboratory of Biochemistry and Molecular Biology, School of Marine Sciences, Ningbo University, Ningbo 315211, China
| | - Ming-Yun Li
- Laboratory of Biochemistry and Molecular Biology, School of Marine Sciences, Ningbo University, Ningbo 315211, China
| | - Jiong Chen
- Laboratory of Biochemistry and Molecular Biology, School of Marine Sciences, Ningbo University, Ningbo 315211, China; Collaborative Innovation Center for Zhejiang Marine High-efficiency and Healthy Aquaculture, Ningbo University, Ningbo 315211, China.
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50
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Safavieh M, Kanakasabapathy MK, Tarlan F, Ahmed MU, Zourob M, Asghar W, Shafiee H. Emerging Loop-Mediated Isothermal Amplification-Based Microchip and Microdevice Technologies for Nucleic Acid Detection. ACS Biomater Sci Eng 2016; 2:278-294. [PMID: 28503658 PMCID: PMC5425166 DOI: 10.1021/acsbiomaterials.5b00449] [Citation(s) in RCA: 111] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Rapid, sensitive, and selective pathogen detection is of paramount importance in infectious disease diagnosis and treatment monitoring. Currently available diagnostic assays based on polymerase chain reaction (PCR) and enzyme-linked immunosorbent assay (ELISA) are time-consuming, complex, and relatively expensive, thus limiting their utility in resource-limited settings. Loop-mediated isothermal amplification (LAMP) technique has been used extensively in the development of rapid and sensitive diagnostic assays for pathogen detection and nucleic acid analysis and hold great promise for revolutionizing point-of-care molecular diagnostics. Here, we review novel LAMP-based lab-on-a-chip (LOC) diagnostic assays developed for pathogen detection over the past several years. We review various LOC platforms based on their design strategies for pathogen detection and discuss LAMP-based platforms still in development and already in the commercial pipeline. This review is intended as a guide to the use of LAMP techniques in LOC platforms for molecular diagnostics and genomic amplifications.
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Affiliation(s)
- Mohammadali Safavieh
- Division of Biomedical Engineering, Division of Renal Medicine, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, 65 Lansdowne Street, Cambridge, Massachusetts 02139, United States
| | - Manoj K. Kanakasabapathy
- Division of Biomedical Engineering, Division of Renal Medicine, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, 65 Lansdowne Street, Cambridge, Massachusetts 02139, United States
| | - Farhang Tarlan
- Division of Biomedical Engineering, Division of Renal Medicine, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, 65 Lansdowne Street, Cambridge, Massachusetts 02139, United States
| | - Minhaz U. Ahmed
- Biosensors and Biotechnology Laboratory, Faculty of Science, Universiti Brunei Darussalam, Jalan Tungku Link, Gadong, Negara Brunei Darussalam
| | - Mohammed Zourob
- Department of Chemistry, College of Science, Alfaisal University, Al Zahrawi Street, Al Maather, Al Takhassusi Rd, Riyadh 11533, Saudi Arabia
| | - Waseem Asghar
- Department of Computer Engineering & Electrical Engineering and Computer Science, Florida Atlantic University, 777 Glades Road, Boca Raton, Florida 33431, United States
| | - Hadi Shafiee
- Division of Biomedical Engineering, Division of Renal Medicine, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, 65 Lansdowne Street, Cambridge, Massachusetts 02139, United States
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