1
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Davies JM, Pralong C, Tickner J, Timbrell V, Rodger A, Bogaard PVD, Rebeaud F. Nanofluidic point-of-care IgE test for subtropical grass pollen for rapid diagnosis of allergic rhinitis. Ann Allergy Asthma Immunol 2024; 132:497-504.e3. [PMID: 38036031 DOI: 10.1016/j.anai.2023.11.025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Revised: 10/24/2023] [Accepted: 11/14/2023] [Indexed: 12/02/2023]
Abstract
BACKGROUND Widening of subtropical climate zones globally and increasing grass-pollen exposure provide the impetus for developing a more precise and accessible diagnosis of allergy. OBJECTIVE To evaluate the utility of recombinant allergen components of Panicoideae and Chloridoideae pollens for specific IgE testing in a rapid, point-of-care device. METHODS Recombinant (r) Pas n 1 and Cyn d 1 were expressed, purified, and tested in the nanofluidic device for measuring serum specific IgE (spIgE) in a well-characterized Australian cohort. Concentrations and classes of spIgE to rPas n 1 and rCyn d 1, and total IgE were compared with skin prick test results and spIgE with grass pollen. RESULTS Correlations between commercial and academic laboratories for 21 sera were high for rPas n 1 spIgE (r = 0.695) and total IgE (r = 0.945). Higher spIgE to rPas n 1 and rCyn d 1 fluorescence was detected in the patients with grass-pollen allergy and with clinician-diagnosed allergic rhinitis (n = 134) than in participants with other allergies (n = 49) or no allergies (n = 23). Correlation between spIgE concentrations to rPas n 1 (r = 0.679) and rCyn d 1 (r = 0.548), with Bahia and Bermuda grass-pollen spIgE, respectively, was highly significant (p<0.0001). The positive/negative predictive agreements of spIgE classes for rPas n 1 (73%/82.5%) and rCyn d 1 (67.8%/66.3%) between the nanofluidic and ImmunoCAP measurements for Bahia and Bermuda grass pollen, respectively, were substantial. CONCLUSION Point-of-care nanofluidic tests for spIgE to rPas n 1 and rCyn d 1 could increase access to more precise clinical diagnosis for patients with allergies in subtropical regions.
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Affiliation(s)
- Janet M Davies
- School of Biomedical Sciences, Centre for Immunity and Infection Control, Queensland University of Technology, Herston, Queensland, Australia.
| | | | - Jacob Tickner
- School of Biomedical Sciences, Centre for Immunity and Infection Control, Queensland University of Technology, Herston, Queensland, Australia
| | - Victoria Timbrell
- School of Biomedical Sciences, Centre for Immunity and Infection Control, Queensland University of Technology, Herston, Queensland, Australia
| | - Alison Rodger
- School of Natural Sciences, Macquarie University, New South Wales, Australia
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2
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Azizian P, Casals-Terré J, Guerrero-SanVicente E, Grinyte R, Ricart J, Cabot JM. Coupling Capillary-Driven Microfluidics with Lateral Flow Immunoassay for Signal Enhancement. BIOSENSORS 2023; 13:832. [PMID: 37622918 PMCID: PMC10452194 DOI: 10.3390/bios13080832] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Revised: 08/14/2023] [Accepted: 08/17/2023] [Indexed: 08/26/2023]
Abstract
Microfluidics has emerged as a versatile technology that is applied to enhance the performance of analytical techniques, among others. Pursuing this, we present a capillary-driven microfluidic device that improves the sensitivity of lateral flow immunoassay rapid tests thanks to offering an automated washing step. A novel multilevel microfluidic chip was 3D-printed with a photocurable black resin, sealed by an optically clear pressure-sensitive adhesive, and linked to the lateral flow strip. To depict the efficacy of microfluidics and the washing step, cortisol was measured quantitatively within the proposed device. Measuring cortisol levels is a way to capture physiological stress responses. Among biofluids, saliva is less infectious and easier to sample than others. However, higher sensitivity is demanded because the salivary cortisol concentrations are much lower than in blood. We carried out a competitive lateral flow immunoassay protocol with the difference that the microfluidic device applies an automated washing step after the sample is drained downstream. It washes the trapped quantum-dot-labeled antibodies out from nitrocellulose, diminishing background noise as these are bonded to cortisols and not to the immobilized receptors. Fluorescence spectroscopy, as a high-precision analysis, was successfully applied to determine clinically relevant salivary cortisol concentrations within a buffer quantitatively. The microfluidic design relied on a 3D valve that avoids reagent cross-contamination. This cross-contamination could make the washing buffer impure and undesirably dilute the sample. The proposed device is cost-effective, self-powered, robust, and ideal for non-expert users.
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Affiliation(s)
- Pooya Azizian
- Energy and Engineering Department, Leitat Technological Center, 08225 Terrassa, Barcelona, Spain; (P.A.)
- Mechanical Engineering Department, Technical University of Catalonia, 08222 Terrassa, Barcelona, Spain
| | - Jasmina Casals-Terré
- Mechanical Engineering Department, Technical University of Catalonia, 08222 Terrassa, Barcelona, Spain
| | - Elena Guerrero-SanVicente
- Energy and Engineering Department, Leitat Technological Center, 08225 Terrassa, Barcelona, Spain; (P.A.)
| | - Ruta Grinyte
- Energy and Engineering Department, Leitat Technological Center, 08225 Terrassa, Barcelona, Spain; (P.A.)
| | - Jordi Ricart
- Energy and Engineering Department, Leitat Technological Center, 08225 Terrassa, Barcelona, Spain; (P.A.)
| | - Joan M. Cabot
- Energy and Engineering Department, Leitat Technological Center, 08225 Terrassa, Barcelona, Spain; (P.A.)
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3
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Jung MA, Song HK, Jo K, Lee A, Hwang YH, Ji KY, Jung DH, Cai M, Lee JY, Pyun BJ, Kim T. Gleditsia sinensis Lam. aqueous extract attenuates nasal inflammation in allergic rhinitis by inhibiting MUC5AC production through suppression of the STAT3/STAT6 pathway. Biomed Pharmacother 2023; 161:114482. [PMID: 36921533 DOI: 10.1016/j.biopha.2023.114482] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Revised: 03/05/2023] [Accepted: 03/07/2023] [Indexed: 03/16/2023] Open
Abstract
Allergic rhinitis (AR), a chronic respiratory inflammatory disease, is among the most common chronic diseases reported worldwide. Mucus hypersecretion is a critical feature of AR pathogenesis. Although the Gleditsia sinensis extract has several beneficial effects on human health, its effects on allergic inflammation have not yet been investigated. In this study, we examined the effects of G. sinensis aqueous extract (GSAE) on nasal inflammation in an ovalbumin (OVA)-induced AR mouse model. GSAE was administered orally for 1 week and then the clinical nasal symptoms were evaluated. The levels of histamine, OVA-specific immunoglobulin (Ig) E, and interleukin (IL)-13 were measured in the serum using an enzyme-linked immunosorbent assay (ELISA). Inflammatory cells were then counted in the nasal lavage fluid (NALF) and histopathology in the nasal epithelium was evaluated. STAT3/STAT6 phosphorylation was examined in primary human nasal epithelial cells (HNEpCs) using western blot analysis. Oral administration of GSAE to OVA-induced AR mice alleviated nasal clinical symptoms and reduced OVA-specific immunoglobulin E, interleukin (IL)-13, and histamine levels. The accumulation of eosinophils in nasal lavage fluid, nasal mucosa, mast cells, goblet cells, and mucin 5AC (MUC5AC) in the nasal epithelium was also inhibited by GSAE. Treatment with GSAE inhibited the production of MUC5AC in IL-4/IL-13-stimulated primary human nasal epithelial cells through the signal transducer and activator of transcription (STAT)3/STAT6 signaling pathway. These results indicated that GSAE reduces nasal inflammation suggesting that it is a potential treatment option for AR.
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Affiliation(s)
- Myung-A Jung
- KM Convergence Research Division, Korea Institute of Oriental Medicine (KIOM), 1672 Yuseong-daero Yuseong-gu, Daejeon 34054, the Republic of Korea
| | - Hyun-Kyung Song
- KM Convergence Research Division, Korea Institute of Oriental Medicine (KIOM), 1672 Yuseong-daero Yuseong-gu, Daejeon 34054, the Republic of Korea
| | - Kyuhyung Jo
- KM Convergence Research Division, Korea Institute of Oriental Medicine (KIOM), 1672 Yuseong-daero Yuseong-gu, Daejeon 34054, the Republic of Korea
| | - Ami Lee
- KM Convergence Research Division, Korea Institute of Oriental Medicine (KIOM), 1672 Yuseong-daero Yuseong-gu, Daejeon 34054, the Republic of Korea
| | - Youn-Hwan Hwang
- KM Convergence Research Division, Korea Institute of Oriental Medicine (KIOM), 1672 Yuseong-daero Yuseong-gu, Daejeon 34054, the Republic of Korea
| | - Kon-Young Ji
- KM Convergence Research Division, Korea Institute of Oriental Medicine (KIOM), 1672 Yuseong-daero Yuseong-gu, Daejeon 34054, the Republic of Korea; Center for Companion Animal New Drug Development, Jeonbuk Branch, Korea Institute of Toxicology (KIT), 30 Baekhak1-gil, Jeongeup-si 56212, the Republic of Korea
| | - Dong Ho Jung
- KM Convergence Research Division, Korea Institute of Oriental Medicine (KIOM), 1672 Yuseong-daero Yuseong-gu, Daejeon 34054, the Republic of Korea
| | - Mudan Cai
- KM Science Research Division, Korea Institute of Oriental Medicine (KIOM), 1672 Yuseong-daero Yuseong-gu, Daejeon 34054, the Republic of Korea
| | - Joo Young Lee
- KM Convergence Research Division, Korea Institute of Oriental Medicine (KIOM), 1672 Yuseong-daero Yuseong-gu, Daejeon 34054, the Republic of Korea
| | - Bo-Jeong Pyun
- KM Convergence Research Division, Korea Institute of Oriental Medicine (KIOM), 1672 Yuseong-daero Yuseong-gu, Daejeon 34054, the Republic of Korea.
| | - Taesoo Kim
- KM Convergence Research Division, Korea Institute of Oriental Medicine (KIOM), 1672 Yuseong-daero Yuseong-gu, Daejeon 34054, the Republic of Korea.
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4
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Guo Q, Wang D, Zeng M, Gong Z, Deng X, Liu J, Zhang L, Zhang Y, Xu L. Determination of Immunoglobulin E (IgE) in Serum by a Laboratory-Constructed Time-Resolved Fluorescent Nanosphere-Based Immunochromatographic Test Strip. ANAL LETT 2022. [DOI: 10.1080/00032719.2022.2152039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Qiaoyun Guo
- Tianjin University of Finance and Economics, Tianjin, China
- Tianjin Medical College, Tianjin, China
| | - Deyin Wang
- Tianjin University of Finance and Economics, Tianjin, China
- Tianjin Medical College, Tianjin, China
| | - Min Zeng
- Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and Diagnosis, School of Pharmacy, Tianjin Medical University, Tianjin, China
| | | | - Xiyan Deng
- Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and Diagnosis, School of Pharmacy, Tianjin Medical University, Tianjin, China
| | | | - Liyan Zhang
- Tianjin University of Finance and Economics, Tianjin, China
| | | | - Liang Xu
- Tianjin Medical College, Tianjin, China
- Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and Diagnosis, School of Pharmacy, Tianjin Medical University, Tianjin, China
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5
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Kim KJ, Song Y, Park S, Oh SJ, Kwon SJ. Immunosensor for human
IgE
detection using electrochemical redox cycling with ferrocene‐mixed self‐assembled monolayers modified Au electrode. B KOREAN CHEM SOC 2022. [DOI: 10.1002/bkcs.12641] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Affiliation(s)
- Ki Jun Kim
- Department of Chemistry Konkuk University Seoul South Korea
| | - Yesol Song
- Department of Chemistry Konkuk University Seoul South Korea
| | | | - Seung Jun Oh
- Pioneering Research Center, LG Chem Ltd. Seoul South Korea
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6
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Ahmad Najib M, Selvam K, Khalid MF, Ozsoz M, Aziah I. Quantum Dot-Based Lateral Flow Immunoassay as Point-of-Care Testing for Infectious Diseases: A Narrative Review of Its Principle and Performance. Diagnostics (Basel) 2022; 12:diagnostics12092158. [PMID: 36140559 PMCID: PMC9497919 DOI: 10.3390/diagnostics12092158] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Revised: 08/25/2022] [Accepted: 08/31/2022] [Indexed: 11/16/2022] Open
Abstract
Infectious diseases are the world’s greatest killers, accounting for millions of deaths worldwide annually, especially in low-income countries. As the risk of emerging infectious diseases is increasing, it is critical to rapidly diagnose infections in the early stages and prevent further transmission. However, current detection strategies are time-consuming and have exhibited low sensitivity. Numerous studies revealed the advantages of point-of-care testing, such as those which are rapid, user-friendly and have high sensitivity and specificity, and can be performed at a patient’s bedside. The Lateral Flow Immunoassay (LFIA) is the most popular diagnostic assay that fulfills the POCT standards. However, conventional AuNPs-LFIAs are moderately sensitive, meaning that rapid detection remains a challenge. Here, we review quantum dot (QDs)-based LFIA for highly sensitive rapid diagnosis of infectious diseases. We briefly describe the principles of LFIA, strategies for applying QDs to enhance sensitivity, and the published performance of the QD-LFIA tested against several infectious diseases.
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Affiliation(s)
- Mohamad Ahmad Najib
- Institute for Research in Molecular Medicine (INFORMM), Health Campus, Universiti Sains Malaysia, Kubang Kerian 16150, Kelantan, Malaysia
| | - Kasturi Selvam
- Institute for Research in Molecular Medicine (INFORMM), Health Campus, Universiti Sains Malaysia, Kubang Kerian 16150, Kelantan, Malaysia
| | - Muhammad Fazli Khalid
- Institute for Research in Molecular Medicine (INFORMM), Health Campus, Universiti Sains Malaysia, Kubang Kerian 16150, Kelantan, Malaysia
| | - Mehmet Ozsoz
- Department of Biomedical Engineering, Near East University, via Mersin 10, Nicosia 99138, Turkey
| | - Ismail Aziah
- Institute for Research in Molecular Medicine (INFORMM), Health Campus, Universiti Sains Malaysia, Kubang Kerian 16150, Kelantan, Malaysia
- Correspondence:
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7
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Jiao X, Peng T, Liang Z, Hu Y, Meng B, Zhao Y, Xie J, Gong X, Jiang Y, Fang X, Yu X, Dai X. Lateral Flow Immunoassay Based on Time-Resolved Fluorescence Microspheres for Rapid and Quantitative Screening CA199 in Human Serum. Int J Mol Sci 2022; 23:ijms23179991. [PMID: 36077387 PMCID: PMC9456114 DOI: 10.3390/ijms23179991] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Revised: 08/26/2022] [Accepted: 08/30/2022] [Indexed: 11/16/2022] Open
Abstract
Carbohydrate antigen 199 (CA199) is a serum biomarker which has certain value and significance in the diagnosis, prognosis, treatment, and postoperative monitoring of cancer. In this study, a lateral flow immunoassay based on europium (III) polystyrene time-resolved fluorescence microspheres (TRFM-based LFIA), integrated with a portable fluorescence reader, has been successfully establish for rapid and quantitative analysis of CA199 in human serum. Briefly, time-resolved fluorescence microspheres (TRFMs) were conjugated with antibody I (Ab1) against CA199 as detection probes, and antibody II (Ab2) was coated as capture element, and a “TRFMs-Ab1-CA199-Ab2” sandwich format would form when CA199 was detected by the TRFM-based LFIA. Under the optimal parameters, the detection limit of the TRFM-based LFIA for visible quantitation with the help of an ultraviolet light was 4.125 U/mL, which was four times lower than that of LFIA based on gold nanoparticles. Additionally, the fluorescence ratio is well linearly correlated with the CA199 concentration (0.00–66.0 U/mL) and logarithmic concentration (66.0–264.0 U/mL) for quantitative detection. Serum samples from 10 healthy people and 10 liver cancer patients were tested to confirm the performances of the point-of-care application of the TRFM-based LFIA, 20.0 U/mL of CA199 in human serum was defined as the threshold for distinguishing healthy people from liver cancer patients with an accuracy of about 60%. The establishment of TRFM-based LFIA will provide a sensitive, convenient, and efficient technical support for rapid screening of CA199 in cancer diagnosis and prognosis.
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Affiliation(s)
- Xueshima Jiao
- College of Life Sciences, China Jiliang University, Hangzhou 310018, China
- Center for Advanced Measurement Science, National Institute of Metrology, Beijing 100029, China
| | - Tao Peng
- Center for Advanced Measurement Science, National Institute of Metrology, Beijing 100029, China
| | - Zhanwei Liang
- College of Life Sciences, China Jiliang University, Hangzhou 310018, China
- Center for Advanced Measurement Science, National Institute of Metrology, Beijing 100029, China
| | - Yalin Hu
- College of Life Sciences, China Jiliang University, Hangzhou 310018, China
- Center for Advanced Measurement Science, National Institute of Metrology, Beijing 100029, China
| | - Bo Meng
- Center for Advanced Measurement Science, National Institute of Metrology, Beijing 100029, China
| | - Yang Zhao
- Center for Advanced Measurement Science, National Institute of Metrology, Beijing 100029, China
| | - Jie Xie
- Center for Advanced Measurement Science, National Institute of Metrology, Beijing 100029, China
| | - Xiaoyun Gong
- Center for Advanced Measurement Science, National Institute of Metrology, Beijing 100029, China
| | - You Jiang
- Center for Advanced Measurement Science, National Institute of Metrology, Beijing 100029, China
| | - Xiang Fang
- Center for Advanced Measurement Science, National Institute of Metrology, Beijing 100029, China
| | - Xiaoping Yu
- College of Life Sciences, China Jiliang University, Hangzhou 310018, China
- Correspondence: (X.Y.); (X.D.); Tel.: +86-010-64524208 (X.D.); Fax: +86-010-64524962 (X.D.)
| | - Xinhua Dai
- Center for Advanced Measurement Science, National Institute of Metrology, Beijing 100029, China
- Correspondence: (X.Y.); (X.D.); Tel.: +86-010-64524208 (X.D.); Fax: +86-010-64524962 (X.D.)
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8
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Torre R, Freitas M, Costa-Rama E, Nouws HPA, Delerue-Matos C. Food allergen control: Tropomyosin analysis through electrochemical immunosensing. Food Chem 2022; 396:133659. [PMID: 35839727 DOI: 10.1016/j.foodchem.2022.133659] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Revised: 06/09/2022] [Accepted: 07/06/2022] [Indexed: 12/25/2022]
Abstract
Regulations of the EU obliges the indication of the presence of allergens on food labels. This work reports the development of an electrochemical immunosensor to determine tropomyosin (TPM) - a major shellfish allergen - prevailing in the muscles of crustacean species. Two linear ranges between the signal and TPM concentration were obtained: between 2.5 and 20 ng mL-1 and between 30 and 200 ng mL-1, with a lowest limit of detection of 0.47 ng mL-1. The selectivity of the optimized immunoassay, tested with other food allergens (e.g., Cyp c 1, a fish allergen), assures the effective detection of TPM, enabling successful control of foodstuff labelling. Several (12) foods, containing high and low TPM concentrations and TPM-free samples, were analysed using the sensor. A conventional ELISA kit and recovery assays were used to evaluate the accuracy of the results.
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Affiliation(s)
- Ricarda Torre
- REQUIMTE/LAQV, Instituto Superior de Engenharia do Porto, Instituto Politécnico do Porto, Rua Dr. Ant ónio Bernardino de Almeida 431, 4200 -072 Porto, Portugal
| | - Maria Freitas
- REQUIMTE/LAQV, Instituto Superior de Engenharia do Porto, Instituto Politécnico do Porto, Rua Dr. Ant ónio Bernardino de Almeida 431, 4200 -072 Porto, Portugal
| | - Estefanía Costa-Rama
- Departamento de Química Física y Analítica, Universidad de Oviedo, Av. Julián Clavería 8, 33006 Oviedo, Spain
| | - Henri P A Nouws
- REQUIMTE/LAQV, Instituto Superior de Engenharia do Porto, Instituto Politécnico do Porto, Rua Dr. Ant ónio Bernardino de Almeida 431, 4200 -072 Porto, Portugal.
| | - Cristina Delerue-Matos
- REQUIMTE/LAQV, Instituto Superior de Engenharia do Porto, Instituto Politécnico do Porto, Rua Dr. Ant ónio Bernardino de Almeida 431, 4200 -072 Porto, Portugal
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9
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Kim SK, Sung H, Hwang SH, Kim MN. A New Quantum Dot-Based Lateral Flow Immunoassay for the Rapid Detection of Influenza Viruses. BIOCHIP JOURNAL 2022; 16:175-182. [PMID: 35340454 PMCID: PMC8935104 DOI: 10.1007/s13206-022-00053-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Revised: 02/08/2022] [Accepted: 02/25/2022] [Indexed: 11/29/2022]
Abstract
Rapid and accurate diagnosis of influenza is crucial to contain influenza virus outbreaks. In clinical settings, lateral flow immunoassays (LFIAs) are widely used for rapid influenza antigen detection. The choice of label plays an important role in determining the sensitivity of the LFIA. Quantum dots are one of the most promising fluorescent reporters. Here, we evaluated a novel quantum dot-based assay, QuantumPACK Easy Influenza A + B (QuantumPACK Easy; BioSquare Inc., Korea). A total of 394 nasopharyngeal swab samples, including 94 influenza A virus-positive, 98 influenza B virus-positive, 175 influenza A and B virus-negative, and 27 other respiratory pathogen-positive samples, were collected. Samples were tested with QuantumPACK Easy, Allplex RP real-time RT-PCR assay (Allplex RP; Seegene, Korea), and Sofia Influenza A + B FIA (Sofia; Quidel, CA, USA). The sensitivity and specificity of QuantumPACK Easy was analyzed using the Allplex RP assay. The agreement between QuantumPACK Easy and Sofia assays was also analyzed. The sensitivity of QuantumPACK Easy for influenza A and B was 80.9% and 83.7%, respectively. The specificity of QuantumPACK Easy was 100%. Cross-reactivity with other respiratory pathogens was not observed. Total agreement between QuantumPACK Easy and Sofia was 89.6% (kappa 0.783). The sensitivity of the Sofia assay was 66.0% for influenza A virus and 61.2% for influenza B virus. QuantumPACK Easy had acceptable performance, with better sensitivity than a commercially available antigen detection assay, possibly due to the characteristics of the quantum dot.
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Affiliation(s)
- Soo-Kyung Kim
- Department of Laboratory Medicine, Asan Medical Center, University of Ulsan College of Medicine, 88, Olympic-ro 43-gil, Songpa-gu, Seoul, 05505 Korea.,Department of Laboratory Medicine, Ewha Womans University College of Medicine, Seoul, Korea
| | - Heungsup Sung
- Department of Laboratory Medicine, Asan Medical Center, University of Ulsan College of Medicine, 88, Olympic-ro 43-gil, Songpa-gu, Seoul, 05505 Korea
| | - Sang-Hyun Hwang
- Department of Laboratory Medicine, Asan Medical Center, University of Ulsan College of Medicine, 88, Olympic-ro 43-gil, Songpa-gu, Seoul, 05505 Korea
| | - Mi-Na Kim
- Department of Laboratory Medicine, Asan Medical Center, University of Ulsan College of Medicine, 88, Olympic-ro 43-gil, Songpa-gu, Seoul, 05505 Korea
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10
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Ji Y, Hu L, Xiong W, Wang Y, Yang F, Shi M, Zhang H, Shao J, Lu C, Fang D, Deng H, Bian Z, Tang G, Liu S, Fan Z, Liu S. Highly sensitive time-resolved fluoroimmunoassay for the quantitative onsite detection of Alternaria longipes in tobacco. J Appl Microbiol 2022; 132:1250-1259. [PMID: 34312955 DOI: 10.1111/jam.15233] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Revised: 07/05/2021] [Accepted: 07/19/2021] [Indexed: 12/20/2022]
Abstract
AIMS Alternaria longipes is a causal agent of brown spot of tobacco, which remains a serious threat to tobacco production. Herein, we established a detection method for A. longipes in tobacco samples based on the principle of time-resolved fluoroimmunoassay, in order to fulfil the requirement of rapid, sensitive and accurate detection in situ. METHODS AND RESULTS A monoclonal antibody against A. longipes was generated, and its purity and titration were assessed using western blot and ELISA. The size of europium (III) nanospheres was measured to confirm successful antibody conjugation. The method described here can detect A. longipes protein lysates as low as 0.78 ng ml-1 , with recovery rates ranging from 85.96% to 99.67% in spiked tobacco. The specificity was also confirmed using a panel of microorganisms. CONCLUSIONS The fluorescent strips allow rapid and sensitive onsite detection of A. longipes in tobacco samples, with high accuracy, specificity, and repeatability. SIGNIFICANCE AND IMPACT OF THE STUDY This novel detection method provides convenience of using crude samples without complex procedures, and therefore allows rapid onsite detection by end users and quick responses towards A. longipes, which is critical for disease control and elimination of phytopathogens.
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Affiliation(s)
- Yuan Ji
- China National Tobacco Quality Supervision and Test Center, Zhengzhou, China
| | - Liwei Hu
- Zhengzhou Tobacco Research Institute of China National Tobacco Corporation, Zhengzhou, China
| | - Wei Xiong
- Sichuan Tobacco Quality Supervision and Testing Station, Chengdu, China
| | - Ying Wang
- China National Tobacco Quality Supervision and Test Center, Zhengzhou, China
| | - Fei Yang
- China National Tobacco Quality Supervision and Test Center, Zhengzhou, China
| | - Mowen Shi
- China National Tobacco Quality Supervision and Test Center, Zhengzhou, China
| | - Haiyan Zhang
- Sichuan Tobacco Quality Supervision and Testing Station, Chengdu, China
| | - Jimin Shao
- Sichuan Tobacco Quality Supervision and Testing Station, Chengdu, China
| | - Canhua Lu
- Yunnan Academy of Tobacco Agricultural Sciences of China National Tobacco Corporation, Kunming, China
| | - Dunhuang Fang
- Yunnan Academy of Tobacco Agricultural Sciences of China National Tobacco Corporation, Kunming, China
| | - Huimin Deng
- China National Tobacco Quality Supervision and Test Center, Zhengzhou, China
| | - Zhaoyang Bian
- China National Tobacco Quality Supervision and Test Center, Zhengzhou, China
| | - Gangling Tang
- China National Tobacco Quality Supervision and Test Center, Zhengzhou, China
| | - Shili Liu
- Department of Medical Microbiology, School of Basic Medical Science, Shandong University, Jinan, China
| | - Ziyan Fan
- China National Tobacco Quality Supervision and Test Center, Zhengzhou, China
| | - Shanshan Liu
- China National Tobacco Quality Supervision and Test Center, Zhengzhou, China
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11
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Ha Y, Kim I. Recent Developments in Innovative Magnetic Nanoparticles-Based Immunoassays: From Improvement of Conventional Immunoassays to Diagnosis of COVID-19. BIOCHIP JOURNAL 2022; 16:351-365. [PMID: 35822174 PMCID: PMC9263806 DOI: 10.1007/s13206-022-00064-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Revised: 05/01/2022] [Accepted: 05/30/2022] [Indexed: 12/29/2022]
Abstract
During the ongoing COVID-19 pandemic, the development of point-of-care (POC) detection with high sensitivity and rapid detection time is urgently needed to prevent transmission of infectious diseases. Magnetic nanoparticles (MNPs) have been considered attractive materials for enhancing sensitivity and reducing the detection time of conventional immunoassays due to their unique properties including magnetic behavior, high surface area, excellent stability, and easy biocompatibility. In addition, detecting target analytes through color development is necessary for user-friendly POC detection. In this review, recent advances in different types of MNPs-based immunoassays such as improvement of the conventional enzyme-linked immunosorbent assay (ELISA), immunoassays based on the peroxidase-like activity of MNPs and based on the dually labeled MNPs, filtration method, and lateral-flow immunoassay are described and we analyze the advantages and strategies of each method. Furthermore, immunoassays incorporating MNPs for COVID-19 diagnosis through color development are also introduced, demonstrating that MNPs can become common tools for on-site diagnosis.
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Affiliation(s)
- Yeonjeong Ha
- Division of Environmental Science and Ecological Engineering, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul, 02841 Republic of Korea
| | - Ijung Kim
- Department of Civil and Environmental Engineering, Hongik University, 94 Wausan-ro, Mapo-gu, Seoul, 04066 Republic of Korea
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12
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Gorbachev IA, Smirnov AV, Glukhovskoy EG, Kolesov VV, Ivanov GR, Kuznetsova IE. Morphology of Mixed Langmuir and Langmuir-Schaefer Monolayers with Covered CdSe/CdS/ZnS Quantum Dots and Arachidic Acid. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:14105-14113. [PMID: 34793676 DOI: 10.1021/acs.langmuir.1c02345] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
The process of formation of a Langmuir-Schaefer (LS) matrix based on a mixed monolayer of arachidic acid (AA) and 8 nm CdSe/CdS/ZnS quantum dots (QDs) stabilized by molecules of trioctylphosphine oxide (TOPO) was investigated. The change in the morphology, monolayer compressibility, and area per elementary cell of the created mixed monolayers, depending on the ratio of the components, was studied. It is shown that the change in the morphology of Langmuir-Blodgett (LB) monolayers begins to occur at a ratio between the number of QDs and AA molecules of 1:24. Dendrimeric structures with a thickness of the order of 30-40 nm appear in the mixed monolayer when LB film deposition was carried out above the collapse surface pressure of a Langmuir film from only TOPO-covered QDs. Information on the dependence of the morphology of such structures on the molar ratio of the components is necessary for the production of ordered 2D nanostructures containing 0D and 1D objects with quantum bonds. Such nanostructures can be used in nanoelectronic and optoelectronic devices as a sensitive sensor element. The obtained results would be relevant for any type of spherical shape nanoparticles.
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Affiliation(s)
- Ilya A Gorbachev
- Kotel'nikov Institute of Radio Engineering and Electronics of Russian Academy of Science, Mokhovaya str. 11, bld.7, Moscow 125009, Russia
| | - Andrey V Smirnov
- Kotel'nikov Institute of Radio Engineering and Electronics of Russian Academy of Science, Mokhovaya str. 11, bld.7, Moscow 125009, Russia
| | | | - Vladimir V Kolesov
- Kotel'nikov Institute of Radio Engineering and Electronics of Russian Academy of Science, Mokhovaya str. 11, bld.7, Moscow 125009, Russia
| | - George R Ivanov
- University Laboratory "Nanoscience and Nanotechnology", University of Architecture, Civil Engineering and Geodesy, blvd. Hr. Smirnenski 1, Sofia 1164, Bulgaria
| | - Iren E Kuznetsova
- Kotel'nikov Institute of Radio Engineering and Electronics of Russian Academy of Science, Mokhovaya str. 11, bld.7, Moscow 125009, Russia
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13
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Sun Y, Yang S, Yang J, Hu X, Wei Q, Wang Y, Xing Y, Chen L, Chen X, Deng R, Zhang G. An accurate and amplifying competitive lateral flow immunoassay for the sensitive detection of haptens. FOOD AGR IMMUNOL 2021. [DOI: 10.1080/09540105.2021.1989382] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
Affiliation(s)
- Yaning Sun
- Key Laboratory of Animal Immunology of the Ministry of Agriculture, Henan Provincial Key Laboratory of Animal Immunology, Henan Academy of Agricultural Sciences, Zhengzhou, People’s Republic of China
| | - Suzhen Yang
- Key Laboratory of Animal Immunology of the Ministry of Agriculture, Henan Provincial Key Laboratory of Animal Immunology, Henan Academy of Agricultural Sciences, Zhengzhou, People’s Republic of China
| | - Jifei Yang
- Key Laboratory of Animal Immunology of the Ministry of Agriculture, Henan Provincial Key Laboratory of Animal Immunology, Henan Academy of Agricultural Sciences, Zhengzhou, People’s Republic of China
| | - Xiaofei Hu
- Key Laboratory of Animal Immunology of the Ministry of Agriculture, Henan Provincial Key Laboratory of Animal Immunology, Henan Academy of Agricultural Sciences, Zhengzhou, People’s Republic of China
| | - Qiang Wei
- Key Laboratory of Animal Immunology of the Ministry of Agriculture, Henan Provincial Key Laboratory of Animal Immunology, Henan Academy of Agricultural Sciences, Zhengzhou, People’s Republic of China
| | - Yao Wang
- College of Food and Bioengineering, Henan University of Science and Technology, Luoyang, People’s Republic of China
| | - Yunrui Xing
- Key Laboratory of Animal Immunology of the Ministry of Agriculture, Henan Provincial Key Laboratory of Animal Immunology, Henan Academy of Agricultural Sciences, Zhengzhou, People’s Republic of China
| | - Linlin Chen
- Key Laboratory of Animal Immunology of the Ministry of Agriculture, Henan Provincial Key Laboratory of Animal Immunology, Henan Academy of Agricultural Sciences, Zhengzhou, People’s Republic of China
| | - Xinxin Chen
- Key Laboratory of Animal Immunology of the Ministry of Agriculture, Henan Provincial Key Laboratory of Animal Immunology, Henan Academy of Agricultural Sciences, Zhengzhou, People’s Republic of China
| | - Ruiguang Deng
- Key Laboratory of Animal Immunology of the Ministry of Agriculture, Henan Provincial Key Laboratory of Animal Immunology, Henan Academy of Agricultural Sciences, Zhengzhou, People’s Republic of China
| | - Gaiping Zhang
- Key Laboratory of Animal Immunology of the Ministry of Agriculture, Henan Provincial Key Laboratory of Animal Immunology, Henan Academy of Agricultural Sciences, Zhengzhou, People’s Republic of China
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou, People’s Republic of China
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Yang SH, Zhang HY, Huang CC, Tsai YY, Liao SM. Red Zn 2SiO 4:Eu 3+ and Mg 2TiO 4:Mn 4+ nanophosphors for on-site rapid optical detections: Synthesis and characterization. APPLIED PHYSICS. A, MATERIALS SCIENCE & PROCESSING 2021; 127:588. [PMID: 34276141 PMCID: PMC8271324 DOI: 10.1007/s00339-021-04733-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/08/2021] [Accepted: 06/30/2021] [Indexed: 06/13/2023]
Abstract
UNLABELLED This study reports the synthesis and characterization of the red nanophosphors Zn2SiO4:Eu3+ (ZSO:Eu3+) and Mg2TiO4:Mn4+ (MTO:Mn4+). The use of phosphors as a fluorescence label for lateral flow immunochromatographic assay (LFIA) has also been described. The optimal photoluminescence (PL) for ZSO:Eu3+ was obtained when it was synthesized with 7 mol% of Eu3+ and annealed at 1100 °C for 1 h. Long fluorescence lifetime (1.01 ms), high activation energy E a (0.28 eV), and low PL degeneration (10% at 110 °C) are the characteristics of ZSO:Eu3+. MTO:Mn4+ also exhibited high PL intensity along with a high E a of 0.32 eV. The emission wavelengths of phosphors are biocompatible with the optical bio-window of tissues. When human immunoglobulin G (human IgG) at a constant concentration of 100 μg/mL was used for detection, the PL ratios of the test line to the control line were 2.15 and 2.28 for the ZSO:Eu3+- and MTO:Mn4+-labeled LFIA, respectively. Thus, the ZSO:Eu3+ and MTO:Mn4+ nanophosphors are capable of human IgG recognition and are the promising candidates as fluorescent labels for on-site rapid optical biodetection. SUPPLEMENTARY INFORMATION The online version contains supplementary material available at 10.1007/s00339-021-04733-0.
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Affiliation(s)
- Su-Hua Yang
- Department of Electronic Engineering, National Kaohsiung University of Science and Technology, Kaohsiung, 807 Taiwan, ROC
| | - Hao-Yu Zhang
- Department of Electronic Engineering, National Kaohsiung University of Science and Technology, Kaohsiung, 807 Taiwan, ROC
| | - Chih-Chia Huang
- Department of Photonics, National Cheng Kung University, Tainan, 701 Taiwan, ROC
| | - Yi-Yan Tsai
- Department of Electronic Engineering, National Kaohsiung University of Science and Technology, Kaohsiung, 807 Taiwan, ROC
| | - Shun-Ming Liao
- Department of Electronic Engineering, National Kaohsiung University of Science and Technology, Kaohsiung, 807 Taiwan, ROC
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Le TS, He S, Takahashi M, Enomoto Y, Matsumura Y, Maenosono S. Enhancing the Sensitivity of Lateral Flow Immunoassay by Magnetic Enrichment Using Multifunctional Nanocomposite Probes. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:6566-6577. [PMID: 34008984 DOI: 10.1021/acs.langmuir.1c00905] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
For lateral flow immunoassay (LFIA), it is an important challenge to enhance the detection sensitivity to the same level as polymerase chain reaction or enzyme-linked immunosorbent assay to make LFIA pervasive in the field of on-site environmental analysis. We recently demonstrated that the LFIA sensitivity is dramatically enhanced by using Pt-nanoparticle-latex nanocomposite beads (Pt-P2VPs) as probes for the detection of the influenza A (H1N1) antigen compared with using conventional Au colloids as probes. Here, to further enhance the LFIA sensitivity using Pt-P2VPs, superparamagnetic iron oxide nanoparticles (SPIONs) were chemically conjugated to Pt-P2VPs (Pt-P2VP@SPION) to give them magnetic separation capability (enrichment and/or purification). To investigate the effect of magnetic enrichment on the LFIA sensitivity in a sandwich format, the C-reactive protein (CRP) was chosen as a model analyte and anti-CRP antibody (CRPAb)-conjugated Pt-P2VP@SPION (Pt-P2VP@SPION-CRPAb) beads were used as probes. The visual limit of detection (LOD) of LFIA was successfully lowered by increasing the magnetic enrichment factor φ. The minimum LOD under the present experimental conditions was 0.08 ng/mL for φ = 40, which is 26-fold lower than that of the standard Au-nanoparticle-based LFIA. In theory, the LOD can be unlimitedly decreased by just increasing φ. However, the times required for both the antigen-antibody binding reaction and magnetic separation dramatically increase with φ. We also propose solutions to overcome this drawback.
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Affiliation(s)
- The Son Le
- School of Materials Science, Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Nomi, Ishikawa 923-1292, Japan
| | - Sizun He
- School of Materials Science, Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Nomi, Ishikawa 923-1292, Japan
| | - Mari Takahashi
- School of Materials Science, Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Nomi, Ishikawa 923-1292, Japan
| | - Yasushi Enomoto
- New Materials Development Center, Research & Development Division, Nippon Steel Chemical & Material Co., Ltd., 1-Tsukiji, Kisarazu, Chiba 292-0835, Japan
| | - Yasufumi Matsumura
- New Materials Development Center, Research & Development Division, Nippon Steel Chemical & Material Co., Ltd., 1-Tsukiji, Kisarazu, Chiba 292-0835, Japan
| | - Shinya Maenosono
- School of Materials Science, Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Nomi, Ishikawa 923-1292, Japan
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Xiao X, Hu S, Lai X, Peng J, Lai W. Developmental trend of immunoassays for monitoring hazards in food samples: A review. Trends Food Sci Technol 2021. [DOI: 10.1016/j.tifs.2021.02.045] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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17
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Arshad R, Pal K, Sabir F, Rahdar A, Bilal M, Shahnaz G, Kyzas GZ. A review of the nanomaterials use for the diagnosis and therapy of salmonella typhi. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2021.129928] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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18
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Mahmoudi T, Pourhassan-Moghaddam M, Shirdel B, Baradaran B, Morales-Narváez E, Golmohammadi H. (Nano)tag-antibody conjugates in rapid tests. J Mater Chem B 2021; 9:5414-5438. [PMID: 34143173 DOI: 10.1039/d1tb00571e] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Antibodies (Abs) are naturally derived materials with favorable affinity, selectivity, and fast binding kinetics to the respective antigens, which enables their application as promising recognition elements in the development of various types of biosensors/bioassays, especially in rapid tests. These tests are low-cost and easy-to-use biosensing devices with broad applications including medical or veterinary diagnostics, environmental monitoring and industrial usages such as safety and quality analysis in food, providing on-site quick monitoring of various analytes, making it possible to save analysis costs and time. To reach such features, the conjugation of Abs with various nanomaterials (NMs) as tags is necessary, which range from conventional gold nanoparticles to other nanoparticles recently introduced, where magnetic, plasmonic, photoluminescent, or multi-modal properties play a critical role in the overall performance of the analytical device. In this context, to preserve the Ab affinity and provide a rapid response with long-term storage capability, the use of efficient bio-conjugation techniques is critical. Thanks to their prominent role in rapid tests, many studies have been devoted to the design and development of Abs-NMs conjugates with various chemistries including passive adsorption, covalent coupling, and affinity interactions. In this review, we present the state-of-the-art techniques allowing various Ab-NM conjugates with a special focus on the efficiency of the developed probes to be employed in in vitro rapid tests. Challenges and future perspectives on the development of Ab-conjugated nanotags in rapid diagnostic tests are highlighted along with a survey of the progress in commercially available Ab-NM conjugates.
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Affiliation(s)
- Tohid Mahmoudi
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.
| | - Mohammad Pourhassan-Moghaddam
- ARC Research Hub for Integrated Device for End-user Analysis at Low-levels (IDEAL), Faculty of Science, University of Technology Sydney, Sydney, NSW 2007, Australia
| | - Behnaz Shirdel
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.
| | - Behzad Baradaran
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.
| | - Eden Morales-Narváez
- Biophotonic Nanosensors Laboratory, Centro de Investigaciones en Óptica, A. C. Loma del Bosque 115, Lomas del Campestre, 37150 León, Guanajuato, Mexico.
| | - Hamed Golmohammadi
- Nanosensors Bioplatforms Laboratory, Chemistry and Chemical Engineering Research Center of Iran, 14335-186, Tehran, Iran.
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Liu HW, Hu ZL, Li H, Tan QF, Tong J, Zhang YQ. Knockdown of lncRNA ANRIL suppresses the production of inflammatory cytokines and mucin 5AC in nasal epithelial cells via the miR-15a-5p/JAK2 axis. Mol Med Rep 2020; 23:145. [PMID: 33325534 PMCID: PMC7751488 DOI: 10.3892/mmr.2020.11784] [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] [Received: 06/10/2020] [Accepted: 10/08/2020] [Indexed: 12/13/2022] Open
Abstract
The incidence of allergic rhinitis (AR) is increasing worldwide. Human nasal epithelial cells (HNECs) are the key cells in the occurrence of AR. Antisense non-coding RNA in the INK4 locus (ANRIL) was discovered to be involved in the progression of AR. However, the mechanism by which ANRIL mediates the progression of AR remains to be determined. The present study aimed to further explore the mechanism by which ANRIL regulates AR. Thereby, HNECs were treated with IL-13 to mimic AR in vitro. The mRNA expression levels of ANRIL, microRNA (miR)-15a-5p, JAK2, mucin 5AC (MUC5AC), granulocyte-macrophage colony-stimulating factor (GM-CSF) and eotaxin-1, and protein expression levels of JAK2, STAT3 and phosphorylated-STAT3 in HNECs were analyzed using reverse transcription-quantitative PCR and western blotting, respectively. ELISAs were used to detect the secretory levels of inflammatory cytokines and mucin in cell supernatants. In addition, a dual luciferase reporter assay was used to confirm the downstream target of ANRIL and the target gene of miR-15a-5p. The results revealed that the secretory levels of eotaxin-1, GM-CSF and MUC5AC were significantly upregulated by IL-13 in the supernatant of HNECs. The expression levels of ANRIL and JAK2 were also upregulated in IL-13-induced HNECs, while the expression levels of miR-15a-5p were downregulated. In addition, ANRIL was identified to bind to miR-15a-5p. The IL-13-induced upregulation of eotaxin-1, GM-CSF and MUC5AC mRNA expression and secretory levels was significantly inhibited by the genetic knockdown of ANRIL, while the miR-15a-5p inhibitor effectively reversed this effect. JAK2 was also discovered to be directly targeted by miR-15a-5p. The overexpression of JAK2 significantly suppressed the therapeutic effect of miR-15a-5p mimics on IL-13-induced inflammation in vitro. In conclusion, the findings of the present study suggested that the genetic knockdown of ANRIL may suppress the production of inflammatory cytokines and mucin in IL-13-treated HNECs via regulation of the miR-15a-5p/JAK2 axis. Thus, ANRIL may serve as a novel target for AR treatment.
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Affiliation(s)
- Huo-Wang Liu
- Department of Otolaryngology-Head and Neck Surgery, The Third Xiangya Hospital, Central South University, Changsha, Hunan 410013, P.R. China
| | - Zhong-Liang Hu
- Department of Pathology, Xiangya Hospital, Central South University, Changsha, Hunan 410007, P.R. China
| | - Hao Li
- Department of Otolaryngology-Head and Neck Surgery, The Fifth Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang 830000, P.R. China
| | - Qi-Feng Tan
- Department of Otolaryngology-Head and Neck Surgery, The Fifth Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang 830000, P.R. China
| | - Jing Tong
- Department of Otolaryngology-Head and Neck Surgery, The Fifth Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang 830000, P.R. China
| | - Yong-Quan Zhang
- Department of Otolaryngology-Head and Neck Surgery, The Third Xiangya Hospital, Central South University, Changsha, Hunan 410013, P.R. China
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20
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Wang X, Li F, Guo Y. Recent Trends in Nanomaterial-Based Biosensors for Point-of-Care Testing. Front Chem 2020; 8:586702. [PMID: 33195085 PMCID: PMC7596383 DOI: 10.3389/fchem.2020.586702] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Accepted: 09/07/2020] [Indexed: 12/15/2022] Open
Abstract
In recent years, nanomaterials of different shape, size, and composition have been prepared and characterized, such as gold and silver nanoparticles, quantum dots, mesoporous silica nanoparticles, carbon nanomaterials, and hybrid nanocomposites. Because of their unique physical and chemical properties, these nanomaterials are increasingly used in point-of-care testing (POCT) to improve analytical performance and simplify detection process. They are used either as carriers for immobilizing biorecognition elements, or as labels for signal generation, transduction and amplification. In this commentary, we highlight recent POCT technologies that employ nanotechnology for the analysis of disease biomarkers, including small-molecule metabolites, enzymes, proteins, nucleic acids, cancer cells, and pathogens. Recent advances in lateral flow tests, printable electrochemical biosensors, and microfluidics-based devices are summarized. Existing challenges and future directions are also discussed.
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Affiliation(s)
- Xu Wang
- Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA, United States
| | - Feng Li
- College of Chemistry, Sichuan University, Chengdu, China.,Department of Chemistry, Brock University, St. Catharines, ON, Canada
| | - Yirong Guo
- Institute of Pesticide and Environmental Toxicology, Zhejiang University, Hangzhou, China
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21
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Electrochemical Immunosensor for Human IgE Using Ferrocene Self-Assembled Monolayers Modified ITO Electrode. BIOSENSORS-BASEL 2020; 10:bios10040038. [PMID: 32295270 PMCID: PMC7235775 DOI: 10.3390/bios10040038] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/12/2020] [Revised: 04/10/2020] [Accepted: 04/12/2020] [Indexed: 11/17/2022]
Abstract
The immunoglobulin E (IgE) level in serum is an important factor in the examination of allergy. Ferrocene (Fc)-modified self-assembled monolayers (SAMs) were placed on an indium tin oxide (ITO) electrode as a sensing layer for the detection of human IgE. The Fc moiety in the SAMs facilitated the electron transfer through the organic SAMs layer and electrocatalytic signal amplification. The electrochemical measurement was accomplished after the sandwich type immobilization of the receptor antibody, target human IgE, and enzyme conjugated secondary antibody. The enzyme product, p-aminophenol, was quantitatively analyzed by redox cycling via Fc. In addition, the electrochemical impedance spectroscopy (EIS) was investigated for the detection of IgE. The limit of detection (LOD), limit of quantification (LOQ), and dynamic range of the electrochemical sensor were 3 IU/mL, 10 IU/mL, and from 10 IU/mL to 100 IU/mL, respectively.
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