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Tsilimingkra NT, Papaneophytou C. Phytochemicals: Promising Inhibitors of Human Rhinovirus Type 14 3C Protease as a Strategy to Fight the Common Cold. Curr Top Med Chem 2024; 24:CTMC-EPUB-140135. [PMID: 38698747 DOI: 10.2174/0115680266308561240427065854] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2024] [Revised: 04/14/2024] [Accepted: 04/17/2024] [Indexed: 05/05/2024]
Abstract
BACKGROUND Human rhinovirus 3C protease (HRV-3Cpro) plays a crucial role in viral proliferation, establishing it as a prime target for antiviral therapy. However, research on identifying HRV-3Cpro inhibitors is still limited. OBJECTIVE This study had two primary objectives: first, to validate the efficacy of an end-point colorimetric assay, previously developed by our team, for identifying potential inhibitors of HRV-3Cpro; and second, to discover phytochemicals in medicinal plants that inhibit the enzyme's activity. METHODS Rupintrivir, a well-known inhibitor of HRV-3Cpro, was used to validate the colorimetric assay. Following this, we conducted a two-step in silico screening of 2532 phytochemicals, which led to the identification of eight active compounds: apigenin, carnosol, chlorogenic acid, kaempferol, luteolin, quercetin, rosmarinic acid, and rutin. We subsequently evaluated these candidates in vitro. To further investigate the inhibitory potential of the most promising candidates, namely, carnosol and rosmarinic acid, molecular docking studies were performed to analyze their binding interactions with HRV-3Cpro. RESULTS The colorimetric assay we previously developed is effective in identifying compounds that selectively inhibit HRV-3Cpro. Carnosol and rosmarinic acid emerged as potent inhibitors, inhibiting HRV-3Cpro activity in vitro by over 55%. Our analysis indicated that carnosol and rosmarinic acid exert their inhibitory effects through a competitive mechanism. Molecular docking confirmed their competitive binding to the enzyme's active site. CONCLUSION Carnosol and rosmarinic acid warrant additional investigation for their potential in the development of cold treatment. By highlighting these compounds as effective HRV-3Cpro inhibitors, our study presents a promising approach for discovering phytochemical inhibitors against proteases from similar pathogens.
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Affiliation(s)
| | - Christos Papaneophytou
- Department of Life Sciences, School of Life and Health Sciences, University of Nicosia, 2417, Nicosia, Cyprus
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Lu Y, Egedeuzu CS, Taylor PG, Wong LS. Development of Improved Spectrophotometric Assays for Biocatalytic Silyl Ether Hydrolysis. Biomolecules 2024; 14:492. [PMID: 38672508 PMCID: PMC11048244 DOI: 10.3390/biom14040492] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2024] [Revised: 04/11/2024] [Accepted: 04/16/2024] [Indexed: 04/28/2024] Open
Abstract
Reported herein is the development of assays for the spectrophotometric quantification of biocatalytic silicon-oxygen bond hydrolysis. Central to these assays are a series of chromogenic substrates that release highly absorbing phenoxy anions upon cleavage of the sessile bond. These substrates were tested with silicatein, an enzyme from a marine sponge that is known to catalyse the hydrolysis and condensation of silyl ethers. It was found that, of the substrates tested, tert-butyldimethyl(2-methyl-4-nitrophenoxy)silane provided the best assay performance, as evidenced by the highest ratio of enzyme catalysed reaction rate compared with the background (uncatalysed) reaction. These substrates were also found to be suitable for detailed enzyme kinetics measurements, as demonstrated by their use to determine the Michaelis-Menten kinetic parameters for silicatein.
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Affiliation(s)
- Yuqing Lu
- Manchester Institute of Biotechnology, University of Manchester, Manchester M1 7DN, UK; (Y.L.); (C.S.E.)
- Department of Chemistry, University of Manchester, Manchester M13 9PL, UK
| | - Chisom S. Egedeuzu
- Manchester Institute of Biotechnology, University of Manchester, Manchester M1 7DN, UK; (Y.L.); (C.S.E.)
- Department of Chemistry, University of Manchester, Manchester M13 9PL, UK
| | - Peter G. Taylor
- School of Life Health and Chemical Sciences, Open University, Milton Keynes MK7 6AA, UK;
| | - Lu Shin Wong
- Manchester Institute of Biotechnology, University of Manchester, Manchester M1 7DN, UK; (Y.L.); (C.S.E.)
- Department of Chemistry, University of Manchester, Manchester M13 9PL, UK
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Fan Y, Li R, Deng X, Li M, Zhou Y, Wu D, Liu G. Sensitive osteoarthritis sensing by salt-induced aggregation and dispersion of gold nanoparticles. Biotechnol Appl Biochem 2024. [PMID: 38606832 DOI: 10.1002/bab.2588] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Accepted: 03/22/2024] [Indexed: 04/13/2024]
Abstract
Osteoarthritis occurs in any joints, and identification in its earlier stages helps to treat the disease and increase the recovery rate. The radiography method and imaging techniques are traditionally used to identify osteoarthritis. But these methods are expensive, and with the complicated steps. Researchers are working toward developing a highly sensitive biosensor in identifying the osteoarthritis biomarker. This research was focused on developing a C-terminal telopeptide of type II collagen (CTX-II) colorimetric sensor with gold nanoparticle (AuNP) for diagnosing osteoarthritis. Anti-CTX-II was conjugated with AuNP and then added with CTX-II and sodium chloride for the color change. In the presence of CTX-II, antibody releases from AuNP then binds with CTX-II, and the color of AuNP changed to purple. Without the CTX-II, AuNP remains its red color (dispersed). This easier colorimetric assay detected the CTX-II as low as 2 ng/mL on linear regression [y = 0.0131x - 0.0051; R2 = 0.9205]. Furthermore, control performances with the relevant proteins osteopontin, IL-6, and nonimmune antibody failed to change the color confirming the specific identification of CTX-II.
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Affiliation(s)
- Yong Fan
- Orthopedics, The People's Hospital of Renshou County, Renshou, Sichuan, People's Republic of China
| | - Renjie Li
- Orthopedics, The People's Hospital of Renshou County, Renshou, Sichuan, People's Republic of China
| | - Xuekai Deng
- Orthopedics, The People's Hospital of Renshou County, Renshou, Sichuan, People's Republic of China
| | - Ming Li
- Orthopedics, The People's Hospital of Renshou County, Renshou, Sichuan, People's Republic of China
| | - Yu Zhou
- Orthopedics, The People's Hospital of Renshou County, Renshou, Sichuan, People's Republic of China
| | - Dan Wu
- Orthopedics, The People's Hospital of Renshou County, Renshou, Sichuan, People's Republic of China
| | - Gang Liu
- Orthopedics, The People's Hospital of Renshou County, Renshou, Sichuan, People's Republic of China
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Rezk S, Ashraf N, Heshmat H, Elsawaf G, Elsheredy A. Rapid detection of carbapenemase-producing gram-negative bacteria directly from blood culture bottles for a reliable guided empiric therapy. Acta Microbiol Immunol Hung 2024. [PMID: 38573768 DOI: 10.1556/030.2024.02237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2024] [Accepted: 03/16/2024] [Indexed: 04/06/2024]
Abstract
Bloodstream infections (BSIs) caused by multidrug-resistant bacteria are a critical life-threatening challenge which necessitates the urgency to trigger life-saving treatment in a timely manner. This study aimed to evaluate the time required for rapid detection of carbapenemase-producing Enterobacterales (CPE) directly from blood culture bottles to optimize empirical treatment of BSI, especially in pediatric and infant patients, using a cost-effective method. This study included 419 Gram-negative bacteria, of which Klebsiella pneumoniae and Escherichia coli were the most common CPE causing BSI in pediatric and neonatal patients. Phenotypic and genotypic resistance of the selected isolates (45 K. pneumoniae and 9 E. coli) were determined by VITEK-2 Compact system and PCR, respectively. BACT/ALERT bottles were spiked with isolates. Finally, colorimetric RESIST-BC assay and Vitek-2 compact system were evaluated for the rapid detection of carbapenem-resistant bacteria directly from positive blood culture bottles. All selected isolates were phenotypically resistant to carbapenems. PCR showed that blaNDM and blaOXA-48 were present in all isolates, blaVIM was present in 44.4%, while blaKPC and blaIMP were entirely absent. The RESIST-BC kit showed good agreement with PCR for blaNDM and blaOXA-48, demonstrating high sensitivity and specificity, but not with blaVIM. These findings point out that RESIST-BC assay demonstrated an exceptionally short detection time for CPE, completing all cases within the first hour after the blood culture bottles flagged positive. It is also superior in providing a clue for clinicians on antibiotic combinations that can be administered, depending on the type of β-lactamases detected, promptly and efficiently, with low expenses.
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Affiliation(s)
- Shahinda Rezk
- 1Department of Microbiology, Medical Research Institute, Alexandria University, Alexandria, 21561, Egypt
| | - Nourhan Ashraf
- 1Department of Microbiology, Medical Research Institute, Alexandria University, Alexandria, 21561, Egypt
| | - Hassan Heshmat
- 2Department of Pediatrics, Faculty of Medicine, Alexandria University, Alexandria, 21561, Egypt
| | - Gamal Elsawaf
- 1Department of Microbiology, Medical Research Institute, Alexandria University, Alexandria, 21561, Egypt
| | - Amel Elsheredy
- 1Department of Microbiology, Medical Research Institute, Alexandria University, Alexandria, 21561, Egypt
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Chu J, Zhao X. Allosteric Probe-Based Colorimetric Assay for Direct Identification and Sensitive Analysis of Methicillin Resistance of Staphylococcus aureus. J Microbiol Biotechnol 2024; 34:681-688. [PMID: 38544299 PMCID: PMC11016754 DOI: 10.4014/jmb.2312.12042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2023] [Revised: 01/31/2024] [Accepted: 02/02/2024] [Indexed: 04/17/2024]
Abstract
The accurate and rapid detection of methicillin-resistance of Staphylococcus aureus (SA) holds significant clinical importance. However, the methicillin-resistance detection strategies commonly require complicated cell lysis and gene extraction. Herein, we devised a novel colorimetric approach for the sensitive and accurate identification of methicillin-resistance of SA by combining allosteric probe-based target recognition with self-primer elongation-based target recycling. The PBP2a aptamer in the allosteric probe successfully identified the target MRSA, leading to the initiation of self-primer elongation based-cascade signal amplification. The peroxidase-like hemin/G-quadruplex undergo an isothermal autonomous process that effectively catalyzes the oxidation of ABTS2- and produces a distinct blue color, enabling the visual identification of MRSA at low concentrations. The method offers a shorter duration for bacteria cultivation compared to traditional susceptibility testing methods, as well as simplified manual procedures for gene analysis. The overall amplification time for this test is 60 min, and it has a detection limit of 3 CFU/ml. In addition, the approach has exceptional selectivity and reproducibility, demonstrating commendable performance when tested with real samples. Due to its advantages, this colorimetric assay exhibits considerable potential for integration into a sensor kit, thereby offering a viable and convenient alternative for the prompt and on-site detection of MRSA in patients with skin and soft tissue infections.
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Affiliation(s)
- Juan Chu
- Department of Dermatology, Zhuji Affiliated Hospital of Shaoxing University, Zhuji City, Zhejiang Province 31180, P.R. China
| | - Xiaoqin Zhao
- Department of Dermatology, Zhuji Affiliated Hospital of Shaoxing University, Zhuji City, Zhejiang Province 31180, P.R. China
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Yang Y, Gao F, Liang Y, Guo L, Pan Y, Cao P, Zhang Y. Target-Responsive DNA Nanoclaw for the On-Site Identification of Chinese Medicines with Naked Eye. ACS Appl Mater Interfaces 2024; 16:10580-10589. [PMID: 38364286 DOI: 10.1021/acsami.3c15240] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/18/2024]
Abstract
The identification of Chinese medicinal herbs occupies a crucial part in the development of the food and drug market. Although molecular identification based on real-time PCR offers good versatility and uniform digital standards compared with traditional methods, such as morphology, the dependence on large-scale equipment hinders spot detection and marketable applications. In this study, we developed a DNA nanoclaw for colorimetric detection and visible on-site identification of Chinese medicines. When specific miRNA is present, the DNAzyme is activated and cleaves the substrate strand, triggering the catalytic hairpin assembly (CHA) reaction and forming branched DNA junctions on AuNP-I. This can then capture AuNP-II through hybridization and facilitate their aggregation, resulting in a noticeable color change that is observable to the naked eye. By harnessing the dual amplification of DNAzyme and CHA, this highly sensitive nanoprobe successfully achieved specific identification of Chinese medicines. This offers a new perspective for on-site testing in the herbal market.
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Affiliation(s)
- Yuanhuan Yang
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, China
| | - Feng Gao
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, China
| | - Ying Liang
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, China
| | - Lichao Guo
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, China
| | - Yang Pan
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, China
| | - Peng Cao
- The Quzhou Affiliated Hospital of Wenzhou Medical University, Quzhou Peoples Hospital, Quzhou 324000, China
- Jiangsu Provincial Medical Innovation Center, Affiliated Hospital of Integrated Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing 210028, China
| | - Yue Zhang
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, China
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Pour SRS, Calabria D, Emamiamin A, Lazzarini E, Pace A, Guardigli M, Zangheri M, Mirasoli M. Microfluidic-Based Non-Invasive Wearable Biosensors for Real-Time Monitoring of Sweat Biomarkers. Biosensors (Basel) 2024; 14:29. [PMID: 38248406 PMCID: PMC10813635 DOI: 10.3390/bios14010029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Revised: 12/19/2023] [Accepted: 12/28/2023] [Indexed: 01/23/2024]
Abstract
Wearable biosensors are attracting great interest thanks to their high potential for providing clinical-diagnostic information in real time, exploiting non-invasive sampling of biofluids. In this context, sweat has been demonstrated to contain physiologically relevant biomarkers, even if it has not been exhaustively exploited till now. This biofluid has started to gain attention thanks to the applications offered by wearable biosensors, as it is easily collectable and can be used for continuous monitoring of some parameters. Several studies have reported electrochemical and optical biosensing strategies integrated with flexible, biocompatible, and innovative materials as platforms for biospecific recognition reactions. Furthermore, sampling systems as well as the transport of fluids by microfluidics have been implemented into portable and compact biosensors to improve the wearability of the overall analytical device. In this review, we report and discuss recent pioneering works about the development of sweat sensing technologies, focusing on opportunities and open issues that can be decisive for their applications in routine-personalized healthcare practices.
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Affiliation(s)
- Seyedeh Rojin Shariati Pour
- Department of Chemistry “Giacomo Ciamician”, Alma Mater Studiorum, University of Bologna, Tecnopolo di Rimini, Via Dario Campana 71, I-47922 Rimini, Italy; (S.R.S.P.); (A.E.)
| | - Donato Calabria
- Department of Chemistry “Giacomo Ciamician”, Alma Mater Studiorum, University of Bologna, Via Francesco Selmi 2, I-40126 Bologna, Italy; (D.C.); (E.L.); (A.P.); (M.G.)
- Interdepartmental Centre for Industrial Aerospace Research (CIRI AEROSPACE), Alma Mater Studiorum, University of Bologna, Via Baldassarre Canaccini 12, I-47121 Forlì, Italy
| | - Afsaneh Emamiamin
- Department of Chemistry “Giacomo Ciamician”, Alma Mater Studiorum, University of Bologna, Tecnopolo di Rimini, Via Dario Campana 71, I-47922 Rimini, Italy; (S.R.S.P.); (A.E.)
| | - Elisa Lazzarini
- Department of Chemistry “Giacomo Ciamician”, Alma Mater Studiorum, University of Bologna, Via Francesco Selmi 2, I-40126 Bologna, Italy; (D.C.); (E.L.); (A.P.); (M.G.)
| | - Andrea Pace
- Department of Chemistry “Giacomo Ciamician”, Alma Mater Studiorum, University of Bologna, Via Francesco Selmi 2, I-40126 Bologna, Italy; (D.C.); (E.L.); (A.P.); (M.G.)
| | - Massimo Guardigli
- Department of Chemistry “Giacomo Ciamician”, Alma Mater Studiorum, University of Bologna, Via Francesco Selmi 2, I-40126 Bologna, Italy; (D.C.); (E.L.); (A.P.); (M.G.)
- Interdepartmental Centre for Industrial Aerospace Research (CIRI AEROSPACE), Alma Mater Studiorum, University of Bologna, Via Baldassarre Canaccini 12, I-47121 Forlì, Italy
- Interdepartmental Centre for Industrial Research in Renewable Resources, Environment, Sea, and Energy (CIRI FRAME), Alma Mater Studiorum, University of Bologna, Via Sant’Alberto 163, I-48123 Ravenna, Italy
| | - Martina Zangheri
- Department of Chemistry “Giacomo Ciamician”, Alma Mater Studiorum, University of Bologna, Tecnopolo di Rimini, Via Dario Campana 71, I-47922 Rimini, Italy; (S.R.S.P.); (A.E.)
- Interdepartmental Centre for Industrial Agrofood Research (CIRI AGRO), Alma Mater Studiorum—University of Bologna, Via Quinto Bucci 336, I-47521 Cesena, Italy
- Interdepartmental Centre for Industrial Research in Advanced Mechanical Engineering Applications and Materials Technology (CIRI MAM), Alma Mater Studiorum, University of Bologna, Viale Risorgimento 2, I-40136 Bologna, Italy
| | - Mara Mirasoli
- Department of Chemistry “Giacomo Ciamician”, Alma Mater Studiorum, University of Bologna, Tecnopolo di Rimini, Via Dario Campana 71, I-47922 Rimini, Italy; (S.R.S.P.); (A.E.)
- Interdepartmental Centre for Industrial Aerospace Research (CIRI AEROSPACE), Alma Mater Studiorum, University of Bologna, Via Baldassarre Canaccini 12, I-47121 Forlì, Italy
- Interdepartmental Centre for Industrial Research in Renewable Resources, Environment, Sea, and Energy (CIRI FRAME), Alma Mater Studiorum, University of Bologna, Via Sant’Alberto 163, I-48123 Ravenna, Italy
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Madhuvilakku R, Hong Y, Nila IS, Villagra Moran VM, Subramanian P, Khan ZA, Jeong S, You SG. Quantification of Neuronal Cell-Released Hydrogen Peroxide Using 3D Mesoporous Copper-Enriched Prussian Blue Microcubes Nanozymes: A Colorimetric Approach in Real Time and Anticancer Effect. ACS Appl Mater Interfaces 2023; 15:55466-55485. [PMID: 37991753 DOI: 10.1021/acsami.3c13594] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2023]
Abstract
Despite the effectiveness and selectivity of natural enzymes, their instability has paved the way for developing nanozymes with high peroxidase activity using a straightforward technique, thereby expanding their potential for multifunctional applications. Herein, meso-copper-Prussian blue microcubes (Meso-Cu-PBMCs) nanozymes were successfully prepared via a cost-effective hydrothermal route. It was found that the Cu-PBMCs nanozymes, with three-dimensional (3D) mesoporous cubic morphologies, exhibited an excellent peroxidase-like property. Based on the high affinity of Meso-Cu-PBMCs toward H2O2 (Km = 0.226 μM) and TMB (Km = 0.407 mM), a colorimetric sensor for in situ H2O2 detection was constructed. On account of the high catalytic activity, affinity, and cascade strategy, the Meso-Cu-PBMCs nanozyme generated rapid multicolor displays at varying H2O2 concentrations. Under optimized conditions, the proposed sensor exhibits a preferable sensitivity of 18.14 μA μM-1, a linear range of 10 nM-25 mM, and a detection limit of 6.36 nM (S/N = 10). The reliability of the sensor was verified by detecting H2O2 in spiked human blood serum and milk samples, as well as by detecting in situ H2O2 generated from the neuron cell SH-SY5Y. Besides, the Meso-Cu-PBMCs nanozyme facilitated the catalysis of H2O2 in cancer cells, generating •OH radicals that induce the death of cancer cells (HCT-116 colon cancer cells), which holds substantial potential for application in chemodynamic therapy (CDT). This proposed strategy holds promise for simple, rapid, inexpensive, and effective intracellular biosensing and offers a novel approach to improve CDT efficacy.
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Affiliation(s)
- Rajesh Madhuvilakku
- Department of Physical Therapy, College of Healthcare Medical Science & Engineering, Inje University, Gimhae, Gyeong-nam 50834, Republic of Korea
- Biohealth Products Research Center (BPRC), Inje University, Gimhae, Gyeong-nam 50834, Republic of Korea
- Research Center for Aged-life Redesign (RCAR), Inje University, Gimhae, Gyeong-nam 50834, Republic of Korea
| | - Yonggeun Hong
- Department of Physical Therapy, College of Healthcare Medical Science & Engineering, Inje University, Gimhae, Gyeong-nam 50834, Republic of Korea
- Biohealth Products Research Center (BPRC), Inje University, Gimhae, Gyeong-nam 50834, Republic of Korea
- Research Center for Aged-life Redesign (RCAR), Inje University, Gimhae, Gyeong-nam 50834, Republic of Korea
- Department of Digital Anti-Aging Healthcare, Graduate School of Inje University, Gimhae, Gyeong-nam 50834, Republic of Korea
- Department of Physical Therapy, Graduate School of Inje University, Gimhae, Gyeong-nam 50834, Republic of Korea
- Department of Rehabilitation Science, Graduate School of Inje University, Gimhae, Gyeong-nam 50834, Republic of Korea
| | - Irin Sultana Nila
- Biohealth Products Research Center (BPRC), Inje University, Gimhae, Gyeong-nam 50834, Republic of Korea
- Research Center for Aged-life Redesign (RCAR), Inje University, Gimhae, Gyeong-nam 50834, Republic of Korea
- Department of Digital Anti-Aging Healthcare, Graduate School of Inje University, Gimhae, Gyeong-nam 50834, Republic of Korea
| | - Vanina Myuriel Villagra Moran
- Biohealth Products Research Center (BPRC), Inje University, Gimhae, Gyeong-nam 50834, Republic of Korea
- Research Center for Aged-life Redesign (RCAR), Inje University, Gimhae, Gyeong-nam 50834, Republic of Korea
- Department of Physical Therapy, Graduate School of Inje University, Gimhae, Gyeong-nam 50834, Republic of Korea
| | - Palanisamy Subramanian
- East Coast Life Sciences Institute, Gangneung-Wonju National University, Gangneung, Gangwon 25457, Republic of Korea
- Department of Marine Food Science and Technology, Gangneung-Wonju National University, Gangneung, Gangwon 25457, Republic of Korea
| | - Zeeshan Ahmad Khan
- Department of Physical Therapy, College of Healthcare Medical Science & Engineering, Inje University, Gimhae, Gyeong-nam 50834, Republic of Korea
- Biohealth Products Research Center (BPRC), Inje University, Gimhae, Gyeong-nam 50834, Republic of Korea
- Research Center for Aged-life Redesign (RCAR), Inje University, Gimhae, Gyeong-nam 50834, Republic of Korea
| | - Sehoon Jeong
- Department of Medical Information Technology, College of Bio Nano Information Technology, Inje University, Gimhae, Gyeong-nam 50834, Republic of Korea
| | - Sang Guan You
- East Coast Life Sciences Institute, Gangneung-Wonju National University, Gangneung, Gangwon 25457, Republic of Korea
- Department of Marine Food Science and Technology, Gangneung-Wonju National University, Gangneung, Gangwon 25457, Republic of Korea
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Cascelli N, Gotor-Fernández V, Lavandera I, Sannia G, Lettera V. Spectrophotometric Assay for the Detection of 2,5-Diformylfuran and Its Validation through Laccase-Mediated Oxidation of 5-Hydroxymethylfurfural. Int J Mol Sci 2023; 24:16861. [PMID: 38069183 PMCID: PMC10706692 DOI: 10.3390/ijms242316861] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2023] [Revised: 11/18/2023] [Accepted: 11/24/2023] [Indexed: 12/18/2023] Open
Abstract
Modern biocatalysis requires fast, sensitive, and efficient high-throughput screening methods to screen enzyme libraries in order to seek out novel biocatalysts or enhanced variants for the production of chemicals. For instance, the synthesis of bio-based furan compounds like 2,5-diformylfuran (DFF) from 5-hydroxymethylfurfural (HMF) via aerobic oxidation is a crucial process in industrial chemistry. Laccases, known for their mild operating conditions, independence from cofactors, and versatility with various substrates, thanks to the use of chemical mediators, are appealing candidates for catalyzing HMF oxidation. Herein, Schiff-based polymers based on the coupling of DFF and 1,4-phenylenediamine (PPD) have been used in the set-up of a novel colorimetric assay for detecting the presence of DFF in different reaction mixtures. This method may be employed for the fast screening of enzymes (Z' values ranging from 0.68 to 0.72). The sensitivity of the method has been proved, and detection (8.4 μM) and quantification (25.5 μM) limits have been calculated. Notably, the assay displayed selectivity for DFF and enabled the measurement of kinetics in DFF production from HMF using three distinct laccase-mediator systems.
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Affiliation(s)
- Nicoletta Cascelli
- Biopox srl, Viale Maria Bakunin 12, 80125 Napoli, Italy; (N.C.); (G.S.)
- Organic and Inorganic Chemistry Department, University of Oviedo, Avenida Julián Clavería 8, 33006 Oviedo, Spain; (V.G.-F.); (I.L.)
| | - Vicente Gotor-Fernández
- Organic and Inorganic Chemistry Department, University of Oviedo, Avenida Julián Clavería 8, 33006 Oviedo, Spain; (V.G.-F.); (I.L.)
| | - Iván Lavandera
- Organic and Inorganic Chemistry Department, University of Oviedo, Avenida Julián Clavería 8, 33006 Oviedo, Spain; (V.G.-F.); (I.L.)
| | - Giovanni Sannia
- Biopox srl, Viale Maria Bakunin 12, 80125 Napoli, Italy; (N.C.); (G.S.)
| | - Vincenzo Lettera
- Biopox srl, Viale Maria Bakunin 12, 80125 Napoli, Italy; (N.C.); (G.S.)
- Dipartimento di Chimica e Tecnologie Chimiche, Università della Calabria, Via P. Bucci Cubo 12/D, 87036 Cosenza, Italy
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Tang F, Lee CH, Li X, Jiang S, Chow KH, Tse CWS, Ho PL. Evaluation of Two Tests for the Rapid Detection of CTX-M Producers Directly in Urine Samples. Antibiotics (Basel) 2023; 12:1585. [PMID: 37998787 PMCID: PMC10668757 DOI: 10.3390/antibiotics12111585] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Revised: 10/26/2023] [Accepted: 10/31/2023] [Indexed: 11/25/2023] Open
Abstract
Infections caused by extended-spectrum β-lactamase-producing Enterobacterales have increased rapidly and are mainly attributed to the production of CTX-M enzymes. This study evaluated the NG-Test® CTX-M MULTI lateral flow assay (CTX-M LFA) and the Rapid ESBL NP® test (ESBL NP test) for rapid detection of CTX-M-producing Enterobacterales directly in midstream urine (MSU) samples. Testing was performed on 277 clinical MSU samples in a hospital microbiology laboratory from November 2022 to January 2023; 60 of these samples (30 positive for ESBL producers and 30 positive for non-ESBL producers) were tested retrospectively after the identification and susceptibility results were obtained, and 217 samples were tested prospectively immediately after a Gram stain showing the presence of Gram-negative bacilli. The results were compared against phenotypic detection of ESBL and molecular testing as the reference methods. Overall, 67 of the 277 samples were culture-positive for ESBL-producing Enterobacterales. PCR for the blaCTX-M gene was positive for all ESBL-producing Enterobacterales isolates. All CTX-M LFA results were interpretable, while three of the ESBL NP test results were noninterpretable. The sensitivity of the CTX-M LFA (100%, 95% CI 94.6-100%) was higher than that of the ESBL NP test (86.6%, 95% CI 76.0-93.7%). Both tests had high specificities (CTX-M LFA, 99.1%, 95% CI 96.6-99.9% and ESBL NP test, 100%, 95% CI 98.2-100%). In conclusion, both the CTX-M LFA and the ESBL NP test can deliver rapid results that could improve antimicrobial stewardship for urinary tract infections.
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Affiliation(s)
- Forrest Tang
- Department of Clinical Pathology, Kwong Wah Hospital, Hospital Authority, Hong Kong, China; (F.T.)
| | - Chung-Ho Lee
- Department of Clinical Pathology, Kwong Wah Hospital, Hospital Authority, Hong Kong, China; (F.T.)
| | - Xin Li
- Department of Microbiology, University of Hong Kong, Hong Kong, China
- Carol Yu Centre for Infection, University of Hong Kong, Hong Kong, China
- Department of Microbiology, Queen Mary Hospital, Hospital Authority, Hong Kong, China
| | - Shuo Jiang
- Department of Microbiology, University of Hong Kong, Hong Kong, China
- Carol Yu Centre for Infection, University of Hong Kong, Hong Kong, China
| | - Kin-Hung Chow
- Department of Microbiology, University of Hong Kong, Hong Kong, China
- Carol Yu Centre for Infection, University of Hong Kong, Hong Kong, China
| | - Cindy Wing-Sze Tse
- Department of Clinical Pathology, Kwong Wah Hospital, Hospital Authority, Hong Kong, China; (F.T.)
| | - Pak-Leung Ho
- Department of Microbiology, University of Hong Kong, Hong Kong, China
- Carol Yu Centre for Infection, University of Hong Kong, Hong Kong, China
- Department of Microbiology, Queen Mary Hospital, Hospital Authority, Hong Kong, China
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11
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Zhu X, Kim TY, Kim SM, Luo K, Lim MC. Recent Advances in Biosensor Development for the Detection of Viral Particles in Foods: A Comprehensive Review. J Agric Food Chem 2023; 71:15942-15953. [PMID: 37862248 DOI: 10.1021/acs.jafc.3c05166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2023]
Abstract
Viral foodborne diseases cause serious harm to human health and the economy. Rapid, accurate, and convenient approaches for detecting foodborne viruses are crucial for preventing diseases. Biosensors integrating electrochemical and optical properties of nanomaterials have emerged as effective tools for the detection of viruses in foods. However, they still face several challenges, including substantial sample preparation and relatively poor sensitivity due to complex food matrices, which limit their field applications. Hence, the purpose of this review is to provide an overview of recent advances in biosensing techniques, including electrochemical, SERS-based, and colorimetric biosensors, for detecting viral particles in food samples, with emerging techniques for extraction/concentration of virus particles from food samples. Moreover, the principle, design, and advantages/disadvantages of each biosensing method are comprehensively described. This review covers the recent development of rapid and sensitive biosensors that can be used as new standards for monitoring food safety and food quality in the food industry.
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Affiliation(s)
- Xiaoning Zhu
- College of Food Science and Engineering, Ocean University of China, Qingdao, Shandong Province 266003, People's Republic of China
| | - Tai-Yong Kim
- Research Group of Food Safety and Distribution, Korea Food Research Institute (KFRI), Wanju-gun, Jeollabuk-do 55365, Republic of Korea
| | - Se-Min Kim
- Research Group of Food Safety and Distribution, Korea Food Research Institute (KFRI), Wanju-gun, Jeollabuk-do 55365, Republic of Korea
- Department of Food Science and Technology, Jeonbuk National University, Jeonju-si, Jeollabuk-do 54896, Republic of Korea
| | - Ke Luo
- College of Food Science and Engineering, Ocean University of China, Qingdao, Shandong Province 266003, People's Republic of China
| | - Min-Cheol Lim
- Research Group of Food Safety and Distribution, Korea Food Research Institute (KFRI), Wanju-gun, Jeollabuk-do 55365, Republic of Korea
- Department of Food Biotechnology, Korea University of Science and Technology, Daejeon-si 34113, Republic of Korea
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12
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Vlasiou M, Nicolaidou V, Papaneophytou C. Targeting Lactate Dehydrogenase-B as a Strategy to Fight Cancer: Identification of Potential Inhibitors by In Silico Analysis and In Vitro Screening. Pharmaceutics 2023; 15:2411. [PMID: 37896171 PMCID: PMC10609963 DOI: 10.3390/pharmaceutics15102411] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Revised: 09/26/2023] [Accepted: 09/28/2023] [Indexed: 10/29/2023] Open
Abstract
Lactate dehydrogenase (LDH) is an enzyme that catalyzes the reversible conversion of lactate to pyruvate while reducing NAD+ to NADH (or oxidizing NADH to NAD+). Due to its central role in the Warburg effect, LDH-A isoform has been considered a promising target for treating several types of cancer. However, research on inhibitors targeting LDH-B isoform is still limited, despite the enzyme's implication in the development of specific cancer types such as breast and lung cancer. This study aimed to identify small-molecule compounds that specifically inhibit LDH-B. Our in silico analysis identified eight commercially available compounds that may affect LDH-B activity. The best five candidates, namely tucatinib, capmatinib, moxidectin, rifampicin, and acetyldigoxin, were evaluated further in vitro. Our results revealed that two compounds, viz., tucatinib and capmatinib, currently used for treating breast and lung cancer, respectively, could also act as inhibitors of LDH-B. Both compounds inhibited LDH-B activity through an uncompetitive mechanism, as observed in in vitro experiments. Molecular dynamics studies further support these findings. Together, our results suggest that two known drugs currently being used to treat specific cancer types may have a dual effect and target more than one enzyme that facilitates the development of these types of cancers. Furthermore, the results of this study could be used as a new starting point for identifying more potent and specific LDH-B inhibitors.
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Affiliation(s)
- Manos Vlasiou
- Department of Veterinary Medicine, University of Nicosia School of Veterinary Medicine, 2414 Nicosia, Cyprus
| | - Vicky Nicolaidou
- Department of Life Sciences, School of Life and Health Sciences, University of Nicosia, 2417 Nicosia, Cyprus
| | - Christos Papaneophytou
- Department of Life Sciences, School of Life and Health Sciences, University of Nicosia, 2417 Nicosia, Cyprus
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13
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Li C, Guo Z, Pu S, Zhou C, Cheng X, Zhao R, Jia N. Molybdenum Disulfide-Integrated Iron Organic Framework Hybrid Nanozyme-Based Aptasensor for Colorimetric Detection of Exosomes. Biosensors (Basel) 2023; 13:800. [PMID: 37622886 PMCID: PMC10452346 DOI: 10.3390/bios13080800] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Revised: 08/05/2023] [Accepted: 08/07/2023] [Indexed: 08/26/2023]
Abstract
Tumor-derived exosomes are considered as a potential marker in liquid biopsy for malignant tumor screening. The development of a sensitive, specific, rapid, and cost-effective detection strategy for tumor-derived exosomes is still a challenge. Herein, a visualized and easy detection method for exosomes was established based on a molybdenum disulfide nanoflower decorated iron organic framework (MoS2-MIL-101(Fe)) hybrid nanozyme-based CD63 aptamer sensor. The CD63 aptamer, which can specifically recognize and capture tumor-derived exosomes, enhanced the peroxidase activity of the hybrid nanozyme and helped to catalyze the 3,3',5,5'-tetramethylbenzidine (TMB)-H2O2 system to generate a stronger colorimetric signal, with its surface modification on the hybrid nanozyme. With the existence of exosomes, CD63 aptamer recognized and adsorbed them on the surface of the nanozyme, which rescued the enhanced peroxidase activity of the aptamer-modified nanozyme, resulting in a deep-to-moderate color change in the TMB-H2O2 system where the change is visible and can be monitored with ultraviolet-visible spectroscopy. In the context of optimal circumstances, the linear range of this exosome detection method is measured to be 1.6 × 104 to 1.6 × 106 particles/μL with a limit of detection as 3.37 × 103 particles/μL. Generally, a simple and accessible approach to exosome detection is constructed, and a nanozyme-based colorimetric aptamer sensor is proposed, which sheds light on novel oncological biomarker measurements in the field of biosensors.
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Affiliation(s)
- Chao Li
- The Education Ministry Key Lab of Resource Chemistry, Joint International Research Laboratory of Resource Chemistry, Ministry of Education, Shanghai Frontiers Science Center of Biomimetic Catalysis and Shanghai Key Laboratory of Rare Earth Functional Materials, College of Chemistry and Materials Science, Shanghai Normal University, Shanghai 200234, China
| | - Zichao Guo
- Department of General Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Sisi Pu
- The Education Ministry Key Lab of Resource Chemistry, Joint International Research Laboratory of Resource Chemistry, Ministry of Education, Shanghai Frontiers Science Center of Biomimetic Catalysis and Shanghai Key Laboratory of Rare Earth Functional Materials, College of Chemistry and Materials Science, Shanghai Normal University, Shanghai 200234, China
| | - Chaohui Zhou
- The Education Ministry Key Lab of Resource Chemistry, Joint International Research Laboratory of Resource Chemistry, Ministry of Education, Shanghai Frontiers Science Center of Biomimetic Catalysis and Shanghai Key Laboratory of Rare Earth Functional Materials, College of Chemistry and Materials Science, Shanghai Normal University, Shanghai 200234, China
| | - Xi Cheng
- Department of General Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Ren Zhao
- Department of General Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Nengqin Jia
- The Education Ministry Key Lab of Resource Chemistry, Joint International Research Laboratory of Resource Chemistry, Ministry of Education, Shanghai Frontiers Science Center of Biomimetic Catalysis and Shanghai Key Laboratory of Rare Earth Functional Materials, College of Chemistry and Materials Science, Shanghai Normal University, Shanghai 200234, China
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14
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Han H, Jeung JH, Jang SH, Lee CY, Ahn JK. Peroxidase-Mimicking Activity of Nanoceria for Label-Free Colorimetric Assay for Exonuclease III Activity. Int J Mol Sci 2023; 24:12330. [PMID: 37569706 PMCID: PMC10418927 DOI: 10.3390/ijms241512330] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2023] [Revised: 07/26/2023] [Accepted: 07/31/2023] [Indexed: 08/13/2023] Open
Abstract
We present a novel label-free colorimetric method for detecting exonuclease III (Exo III) activity using the peroxidase-mimicking activity of cerium oxide nanoparticles (nanoceria). Exo III, an enzyme that specifically catalyzes the stepwise removal of mononucleotides from the 3'-OH termini of double-stranded DNA, plays a significant role in various cellular and physiological processes, including DNA proofreading and repair. Malfunctions of Exo III have been associated with increased cancer risks. To assay the activity of Exo III, we applied the previous reports in that the peroxidase-mimicking activity of nanoceria is inhibited due to the aggregation induced by the electrostatic attraction between DNA and nanoceria. In the presence of Exo III, the substrate DNA (subDNA), which inhibits nanoceria's activity, is degraded, thereby restoring the peroxidase-mimicking activity of nanoceria. Consequently, the 3,3',5,5'-tetramethylbenzidine (TMB) substrate is oxidized, leading to a color change from colorless to blue, along with an increase in the absorbance intensity. This approach enabled us to reliably detect Exo III at a limit of detection (LOD) of 0.263 units/mL across a broad dynamic range from 3.1 to 400 units/mL, respectively, with an outstanding specificity. Since this approach does not require radiolabels, complex DNA design, or sophisticated experimental techniques, it provides a simpler and more feasible alternative to standard methods.
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Affiliation(s)
- Hyogu Han
- Material & Component Convergence R&D Department, Korea Institute of Industrial Technology (KITECH), Ansan 15588, Republic of Korea; (H.H.); (J.H.J.); (S.H.J.)
- Department of Chemistry, Gangneung-Wonju National University, Gangneung 25457, Republic of Korea
| | - Jae Hoon Jeung
- Material & Component Convergence R&D Department, Korea Institute of Industrial Technology (KITECH), Ansan 15588, Republic of Korea; (H.H.); (J.H.J.); (S.H.J.)
| | - Se Hee Jang
- Material & Component Convergence R&D Department, Korea Institute of Industrial Technology (KITECH), Ansan 15588, Republic of Korea; (H.H.); (J.H.J.); (S.H.J.)
- Department of Medical Device Engineering and Management, College of Medicine, Yonsei University, Seoul 03722, Republic of Korea
| | - Chang Yeol Lee
- Bionanotechnology Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon 34141, Republic of Korea
| | - Jun Ki Ahn
- Material & Component Convergence R&D Department, Korea Institute of Industrial Technology (KITECH), Ansan 15588, Republic of Korea; (H.H.); (J.H.J.); (S.H.J.)
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15
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Chen Y, Zhang S, Lu J, Li D, Wu H, Zhang L, Li X, Gao X, Xu Y, Zeng Z, Zeng L, Ding X, Li X, Ding S. DNA-Guided Extracellular-Vesicle Metallization with High Catalytic Activity for Accurate Diagnosis of Pulmonary Nodules. Small 2023; 19:e2208142. [PMID: 37066711 DOI: 10.1002/smll.202208142] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/25/2022] [Revised: 03/19/2023] [Indexed: 06/19/2023]
Abstract
Sensitive and specific analysis of extracellular vesicles (EVs) offers a promising minimally invasive way to identify malignant pulmonary nodules from benign lesions. However, accurate analysis of EVs is subject to free target proteins in blood samples, which compromises the clinical diagnosis value of EVs. Here a DNA-guided extracellular-vesicle metallization (DEVM) strategy is described for ultrasensitive and specific analysis of EV protein biomarkers and classification of pulmonary nodules. The facile DEVM process mainly includes the incorporation of DNA labeled with cholesterol and thiol groups into EV membranes and subsequent deposition of Au3+ and Pt4+ to allow the DNA-functionalized EVs to be encapsulated with AuPt nanoshells. It is found that the synthesized AuPt-metallized EVs possess extrinsic peroxidase-like activity. Utilizing the feature of the catalytic metal nanoshells just growth on the EV membranes, the DEVM method enables multiparametric recognition of target proteins and EV membranes and can produce an amplified colorimetric signal, avoiding the interference of free proteins. By profiling four surface proteins of EVs from 48 patients with pulmonary nodules, the highest area under the receiver operating characteristic curve (0.9983) is obtained. Therefore, this work provides a feasible EVs analysis tool for accurate pulmonary nodules management.
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Affiliation(s)
- Yirong Chen
- Key Laboratory of Clinical Laboratory Diagnostics (Ministry of Education), College of Laboratory Medicine, Chongqing Medical University, Chongqing, 400016, China
| | - Songzhi Zhang
- Key Laboratory of Clinical Laboratory Diagnostics (Ministry of Education), College of Laboratory Medicine, Chongqing Medical University, Chongqing, 400016, China
| | - Jun Lu
- Key Laboratory of Clinical Laboratory Diagnostics (Ministry of Education), College of Laboratory Medicine, Chongqing Medical University, Chongqing, 400016, China
| | - Dandan Li
- Department of Laboratory Medicine, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
| | - Haiping Wu
- Key Laboratory of Clinical Laboratory Diagnostics (Ministry of Education), College of Laboratory Medicine, Chongqing Medical University, Chongqing, 400016, China
| | - Lu Zhang
- Key Laboratory of Clinical Laboratory Diagnostics (Ministry of Education), College of Laboratory Medicine, Chongqing Medical University, Chongqing, 400016, China
| | - Xinyu Li
- Key Laboratory of Clinical Laboratory Diagnostics (Ministry of Education), College of Laboratory Medicine, Chongqing Medical University, Chongqing, 400016, China
| | - Xin Gao
- Key Laboratory of Clinical Laboratory Diagnostics (Ministry of Education), College of Laboratory Medicine, Chongqing Medical University, Chongqing, 400016, China
| | - Yuan Xu
- Key Laboratory of Clinical Laboratory Diagnostics (Ministry of Education), College of Laboratory Medicine, Chongqing Medical University, Chongqing, 400016, China
| | - Zijie Zeng
- Key Laboratory of Clinical Laboratory Diagnostics (Ministry of Education), College of Laboratory Medicine, Chongqing Medical University, Chongqing, 400016, China
| | - Li Zeng
- Department of Laboratory Medicine, Chongqing Traditional Chinese Medicine Hospital, Chongqing, Chongqing, 400016, China
| | - Xiaojuan Ding
- Department of Laboratory Medicine, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
| | - Xinmin Li
- Key Laboratory of Clinical Laboratory Diagnostics (Ministry of Education), College of Laboratory Medicine, Chongqing Medical University, Chongqing, 400016, China
| | - Shijia Ding
- Key Laboratory of Clinical Laboratory Diagnostics (Ministry of Education), College of Laboratory Medicine, Chongqing Medical University, Chongqing, 400016, China
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16
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Lettieri M, Spinelli M, Caponi L, Scarano S, Palladino P, Amoresano A, Minunni M. Sensing of Catecholamine in Human Urine Using a Simple Colorimetric Assay Based on Direct Melanochrome and Indolequinone Formation. Sensors (Basel) 2023; 23:3971. [PMID: 37112313 PMCID: PMC10146333 DOI: 10.3390/s23083971] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Revised: 04/12/2023] [Accepted: 04/13/2023] [Indexed: 06/19/2023]
Abstract
We used the first enzyme-free synthesis and stabilization of soluble melanochrome (MC) and 5,6-indolequinone (IQ) derived from levodopa (LD), dopamine (DA), and norepinephrine (NE) oxidation to develop a simple colorimetric assay for catecholamine detection in human urine, also elucidating the time-dependent formation and molecular weight of MC and IQ using UV-Vis spectroscopy and mass spectrometry. The quantitative detection of LD and DA was achieved in human urine using MC as a selective colorimetric reporter to demonstrate the potential assay applicability in a matrix of interest in therapeutic drug monitoring (TDM) and in clinical chemistry. The assay showed a linear dynamic range between 5.0 mg L-1 and 50.0 mg L-1, covering the concentration range of DA and LD found in urine samples from, e.g., Parkinson's patients undergoing LD-based pharmacological therapy. The data reproducibility in the real matrix was very good within this concentration range (RSDav% 3.7% and 6.1% for DA and LD, respectively), also showing very good analytical performances with the limits of detection of 3.69 ± 0.17 mg L-1 and 2.51 ± 0.08 mg L-1 for DA and LD, respectively, thus paving the way for the effective and non-invasive monitoring of dopamine and levodopa in urine from patients during TDM in Parkinson's disease.
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Affiliation(s)
- Mariagrazia Lettieri
- Department of Chemistry ‘Ugo Schiff’, University of Florence, 50019 Sesto Fiorentino, Italy
| | - Michele Spinelli
- Department of Chemical Sciences, University of Naples Federico II, 80126 Naples, Italy
| | - Laura Caponi
- Laboratory of Clinical Pathology, University Hospital of Pisa, 56126 Pisa, Italy
| | - Simona Scarano
- Department of Chemistry ‘Ugo Schiff’, University of Florence, 50019 Sesto Fiorentino, Italy
| | - Pasquale Palladino
- Department of Chemistry ‘Ugo Schiff’, University of Florence, 50019 Sesto Fiorentino, Italy
| | - Angela Amoresano
- Department of Chemical Sciences, University of Naples Federico II, 80126 Naples, Italy
- INBB—Istituto Nazionale Biostrutture e Biosistemi, Consorzio Interuniversitario, 00136 Rome, Italy
| | - Maria Minunni
- Department of Chemistry ‘Ugo Schiff’, University of Florence, 50019 Sesto Fiorentino, Italy
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17
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Xiang H, Huang S, Zhu D, Yu L, Liu R, Guo Y, Xu L. Au nanozyme driven cascading catalysis in Tollens' reaction: An insight of glucose oxidase-like mechanism. Chemistry 2023:e202300454. [PMID: 37026579 DOI: 10.1002/chem.202300454] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2023] [Revised: 04/06/2023] [Accepted: 04/07/2023] [Indexed: 04/08/2023]
Abstract
Au nanoparticles (NPs) have been proven to be excellent glucose oxidase (GOx) mimics, which can catalyze the electrons transform pathway from glucose to oxygen. This study confirmed AuNPs can accelerate the reaction between [Ag(NH3)2]+ and glucose under alkaline conditions, which is also known as the Tollens' reaction, and the possible mechanism was proposed. Here, [Ag(NH3)2]+ instead of O2 acted directedly as an electron acceptor during glucose oxidation catalyzed by AuNPs, accompanied by hydrogen transfer. The as-synthesized Ag nanoparticles can also catalyze this process, similar to AuNPs, via a unique cascading catalysis mechanism in the Tollens' reaction. A simple and heatless glucose colorimetric assay can be established based on the plasmonic band of AgNPs with a liner range of 0.6-22.2 μM, and the limit of detection is 0.32 μM.
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Affiliation(s)
- Henglong Xiang
- Jilin University, Key Laboratory for Molecular Enzymology and Engineering of the Ministry of Education, National Engineering Laboratory for AIDS Vaccine, School of Life Sciences, CHINA
| | - Sijun Huang
- Jilin University, Key Laboratory for Molecular Enzymology and Engineering of the Ministry of Education, National Engineering Laboratory for AIDS Vaccine, School of Life Sciences, CHINA
| | - Dongwei Zhu
- Jilin University, Key Laboratory for Molecular Enzymology and Engineering of the Ministry of Education, National Engineering Laboratory for AIDS Vaccine, School of Life Sciences, CHINA
| | - Liqiang Yu
- Jilin University, Key Laboratory for Molecular Enzymology and Engineering of the Ministry of Education, National Engineering Laboratory for AIDS Vaccine, School of Life Sciences, CHINA
| | - Rui Liu
- China-Japan Union Hospital of Jilin University, Department of Very Important People Unit, CHINA
| | - Yi Guo
- Jilin University, School of Life Sciences, No. 2699 Qianjin Ave, 130012, Changchun, CHINA
| | - Li Xu
- Jilin University, Key Laboratory for Molecular Enzymology and Engineering of the Ministry of Education, National Engineering Laboratory for AIDS Vaccine, School of Life Sciences, CHINA
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18
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Absalan M, Jabbarpour Z, Ghahremani MH, Motevaseli E, Mahmoudian F, Karimi R, Tavoosidana G. Chromosome conformation capture-based DNA hybridization method for chromosomal translocation screening. Biomark Med 2023; 17:17-27. [PMID: 37013851 DOI: 10.2217/bmm-2022-0115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2023] Open
Abstract
Background: DNA probes have been widely used as diagnostic tools for translocations. This study sought to design a screening tool using ssDNA probes and chromosome conformation capture (3C) library fragment hybridization. Method: The authors focused on developing a probe for the juxtaposed region of MYC and TRD. Fragments of the MYC gene with a thiol modification (MYC-Au NP probe) were functionalized by gold nanoparticles (Au NPs).Then TRD probes were immobilized on a nitrocellulose surface. Hybridization between DNA probes and 3C library fragments of SKW3 cells was determined by color intensity. Results: Optimal hybridization of the 3C library sample of the cell line to probes showed higher color intensity than human umbilical vein endothelial cells. Conclusion: Combining 3C-based techniques and DNA-DNA hybridization can identify rearrangements in cancer cells.
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Affiliation(s)
- Moloud Absalan
- Department of Molecular Medicine, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Zahra Jabbarpour
- Gene Therapy Research Center, Digestive Disease Research Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Mohammad H Ghahremani
- Department of Pharmacology & Toxicology, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Elaheh Motevaseli
- Department of Molecular Medicine, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Fatemeh Mahmoudian
- Department of Molecular Medicine, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Roya Karimi
- Department of Tissue Engineering & Applied Cell Sciences, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Gholamreza Tavoosidana
- Department of Molecular Medicine, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran
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19
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Baskaran B, Gill TM, Furst AL. An Improved Spectrophotometric Method for Toluene-4-Monooxygenase Activity. Chemistry 2023; 29:e202203322. [PMID: 36593585 PMCID: PMC10423644 DOI: 10.1002/chem.202203322] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Revised: 12/28/2022] [Accepted: 12/28/2022] [Indexed: 01/04/2023]
Abstract
Monooxygenases, an important class of enzymes, have been the subject of enzyme engineering due to their high activity and versatile substrate scope. Reactions performed by these biocatalysts have long been monitored by a colorimetric method involving the coupling of a dye precursor to naphthalene hydroxylation products generated by the enzyme. Despite the popularity of this method, we found the dye product to be unstable, preventing quantitative readout. By incorporating an extraction step to solubilize the dye produced, we have improved this assay to the point where quantitation of enzyme activity is possible. Further, by incorporating spectral deconvolution, we have, for the first time, enabled independent quantification of the two possible regioisomeric products: 1-naphthol and 2-naphthol. Previously, such analysis was only possible with chromatographic separation, increasing the cost and complexity of analysis. The efficacy of our improved workflow was evaluated by monitoring the activity of a toluene-4-monooxygenase enzyme from Pseudomonas mendocina KR-1. Our colorimetric regioisomer quantification was found to be consistent with chromatographic analysis by HPLC. The development and validation of a quantitative colorimetric assay for monooxygenase activity that enables regioisomeric distinction and quantification represents a significant advance in analytical methods to monitor enzyme activity. By maintaining facile, low-cost, high-throughput readout while incorporating quantification, this assay represents an important alternative to more expensive chromatographic quantification techniques.
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Affiliation(s)
- Barathkumar Baskaran
- Deparment of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139
| | - Thomas M. Gill
- Deparment of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139
| | - Ariel L. Furst
- Deparment of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139
- Center for Environmental Health Sciences, Massachusetts Institute of Technology, Cambridge, MA 02139
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Heidari-Bafroui H, Kumar A, Hahn C, Scholz N, Charbaji A, Rahmani N, Anagnostopoulos C, Faghri M. Development of a New Lab-on-Paper Microfluidics Platform Using Bi-Material Cantilever Actuators for ELISA on Paper. Biosensors 2023; 13:310. [PMID: 36979522 PMCID: PMC10046564 DOI: 10.3390/bios13030310] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Revised: 02/16/2023] [Accepted: 02/22/2023] [Indexed: 06/18/2023]
Abstract
In this paper, we present a novel and cost-effective lab-on-paper microfluidics platform for performing ELISA autonomously, with no user intervention beyond adding the sample. The platform utilizes two Bi-Material Cantilever Valves placed in a specially designed housing. The integration of these valves in a specific channel network forms a complete fluidic logic circuit for performing ELISA on paper. The housing also incorporates an innovative reagent storage and release mechanism that minimizes variability in the volume of reagents released into the reagent pads. The platform design was optimized to minimize variance in the time of fluid wicking from the reagent pad, using a randomized design of experiment. The platform adheres to the World Health Organization's ASSURED principles. The optimized design was used to conduct an ELISA for detecting rabbit immunoglobulin G (IgG) in a buffer, with a limit of detection of 2.27 ng/mL and a limit of quantification of 8.33 ng/mL. This represents a 58% improvement over previous ELISA methods for detecting rabbit IgG in buffer using portable microfluidic technology.
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Affiliation(s)
- Hojat Heidari-Bafroui
- Microfluidics Laboratory, Department of Mechanical, Industrial, and Systems Engineering, University of Rhode Island, 2 East Alumni Avenue, Kingston, RI 02881, USA
| | - Ashutosh Kumar
- Microfluidics Laboratory, Department of Mechanical, Industrial, and Systems Engineering, University of Rhode Island, 2 East Alumni Avenue, Kingston, RI 02881, USA
| | - Cameron Hahn
- Microfluidics Laboratory, Department of Mechanical, Industrial, and Systems Engineering, University of Rhode Island, 2 East Alumni Avenue, Kingston, RI 02881, USA
| | - Nicholas Scholz
- Microfluidics Laboratory, Department of Mechanical, Industrial, and Systems Engineering, University of Rhode Island, 2 East Alumni Avenue, Kingston, RI 02881, USA
| | - Amer Charbaji
- Microfluidics Laboratory, Department of Mechanical, Industrial, and Systems Engineering, University of Rhode Island, 2 East Alumni Avenue, Kingston, RI 02881, USA
| | - Nassim Rahmani
- Microfluidics Laboratory, Department of Mechanical, Industrial, and Systems Engineering, University of Rhode Island, 2 East Alumni Avenue, Kingston, RI 02881, USA
| | - Constantine Anagnostopoulos
- Microfluidics Laboratory, Department of Mechanical, Industrial, and Systems Engineering, University of Rhode Island, 2 East Alumni Avenue, Kingston, RI 02881, USA
| | - Mohammad Faghri
- Microfluidics Laboratory, Department of Mechanical, Industrial, and Systems Engineering, University of Rhode Island, 2 East Alumni Avenue, Kingston, RI 02881, USA
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21
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Ortiz-Gómez I, Rivadeneyra A, Salmerón JF, de Orbe-Payá I, Morales DP, Capitán-Vallvey LF, Salinas-Castillo A. Near-Field Communication Tag for Colorimetric Glutathione Determination with a Paper-Based Microfluidic Device. Biosensors (Basel) 2023; 13:267. [PMID: 36832033 PMCID: PMC9954394 DOI: 10.3390/bios13020267] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/23/2023] [Revised: 02/09/2023] [Accepted: 02/11/2023] [Indexed: 06/18/2023]
Abstract
Here, we propose a microfluidic paper-based analytical device (µPAD) implemented with a near-field communication (NFC) tag as a portable, simple and fast colorimetric method for glutathione (GSH) determination. The proposed method was based on the fact that Ag+ could oxidize 3,3',5,5'-tetramethylbenzidine (TMB) into oxidized blue TMB. Thus, the presence of GSH could cause the reduction of oxidized TMB, which resulted in a blue color fading. Based on this finding, we developed a method for the colorimetric determination of GSH using a smartphone. A µPAD implemented with the NFC tag allowed the harvesting of energy from a smartphone to activate the LED that allows the capture of a photograph of the µPAD by the smartphone. The integration between electronic interfaces into the hardware of digital image capture served as a means for quantitation. Importantly, this new method shows a low detection limit of 1.0 µM. Therefore, the most important features of this non-enzymatic method are high sensitivity and a simple, fast, portable and low-cost determination of GSH in just 20 min using a colorimetric signal.
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Affiliation(s)
- Inmaculada Ortiz-Gómez
- ECsens, Department of Analytical Chemistry, Faculty of Sciences, University of Granada, 18071 Granada, Spain
- Unit of Excellence in Chemistry Applied to Biomedicine and the Environment, Faculty of Science, University of Granada, 18071 Granada, Spain
| | - Almudena Rivadeneyra
- Unit of Excellence in Chemistry Applied to Biomedicine and the Environment, Faculty of Science, University of Granada, 18071 Granada, Spain
- Electronic Devices Research Group, Department of Electronics and Computer Technology, Faculty of Sciences, University of Granada, 18071 Granada, Spain
| | - José F. Salmerón
- Unit of Excellence in Chemistry Applied to Biomedicine and the Environment, Faculty of Science, University of Granada, 18071 Granada, Spain
- Electronic Devices Research Group, Department of Electronics and Computer Technology, Faculty of Sciences, University of Granada, 18071 Granada, Spain
| | - Ignacio de Orbe-Payá
- ECsens, Department of Analytical Chemistry, Faculty of Sciences, University of Granada, 18071 Granada, Spain
- Unit of Excellence in Chemistry Applied to Biomedicine and the Environment, Faculty of Science, University of Granada, 18071 Granada, Spain
| | - Diego P. Morales
- Unit of Excellence in Chemistry Applied to Biomedicine and the Environment, Faculty of Science, University of Granada, 18071 Granada, Spain
- Electronic Devices Research Group, Department of Electronics and Computer Technology, Faculty of Sciences, University of Granada, 18071 Granada, Spain
| | - Luis Fermín Capitán-Vallvey
- ECsens, Department of Analytical Chemistry, Faculty of Sciences, University of Granada, 18071 Granada, Spain
- Unit of Excellence in Chemistry Applied to Biomedicine and the Environment, Faculty of Science, University of Granada, 18071 Granada, Spain
| | - Alfonso Salinas-Castillo
- ECsens, Department of Analytical Chemistry, Faculty of Sciences, University of Granada, 18071 Granada, Spain
- Unit of Excellence in Chemistry Applied to Biomedicine and the Environment, Faculty of Science, University of Granada, 18071 Granada, Spain
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22
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Tang S, Li L, Wang R, Regmi S, Zhang X, Yang G, Ju J. A Schematic Colorimetric Assay for Sialic Acid Assay Based on PEG-Mediated Interparticle Crosslinking Aggregation of Gold Nanoparticles. Biosensors (Basel) 2023; 13:164. [PMID: 36831929 PMCID: PMC9953623 DOI: 10.3390/bios13020164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Revised: 01/13/2023] [Accepted: 01/15/2023] [Indexed: 06/18/2023]
Abstract
Sialic acid (SA) is a well-known component of glycoproteins, which have applications in various functional processes on the cell's surface. The colorimetric is a simpler and more convenient method for measuring SA due to its low-cost apparatus and visual signal changes. This work focused on the unpredictable interparticle crosslinking aggregation of the functionalized gold nanoparticles (AuNPs) in complex media. We proposed a balance of the Derjaguin-Landau-Verwey-Overbeek (DLVO)-type aggregation and molecule-based interaction method to solve this problem. Here, we report a novel colorimetric assay for the determination of SA using 4-mercaptophenyl boronic acid (4-MPBA) as an analyte's recognition molecule, and negative charge PEG400 was used to repulsive the interparticle crosslinking. The proposed sensing platform shows a linear relationship between the ratio of the absorbance intensity (A525/A660) and concentration of SA from 0.05 to 8 mM (R2 = 0.997) and a detection limit of 48 μM was observed. The novel gold-based colorimetric sensor is easy to fabricate, reproducible in its test performance and has been successfully applied for the detection of SA in biological and healthcare product samples.
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Affiliation(s)
- Shixing Tang
- School of Ophthalmology & Optometry, Wenzhou Medical University, Wenzhou 325035, China
- Engineering Research Center of Clinical Functional Materials and Diagnosis & Treatment Devices of Zhejiang Province, Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou 325001, China
- Department of Epidemiology, School of Public Health, Southern Medical University, Guangzhou 510515, China
| | - Lin Li
- School of Ophthalmology & Optometry, Wenzhou Medical University, Wenzhou 325035, China
- Engineering Research Center of Clinical Functional Materials and Diagnosis & Treatment Devices of Zhejiang Province, Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou 325001, China
| | - Rui Wang
- School of Ophthalmology & Optometry, Wenzhou Medical University, Wenzhou 325035, China
- Engineering Research Center of Clinical Functional Materials and Diagnosis & Treatment Devices of Zhejiang Province, Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou 325001, China
| | - Sagar Regmi
- Department of Pharmacology, School of Medicine, Case Western Reserve University, Cleveland, OH 44106, USA
| | - Xinyu Zhang
- Engineering Research Center of Clinical Functional Materials and Diagnosis & Treatment Devices of Zhejiang Province, Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou 325001, China
| | - Guoqiang Yang
- School of Ophthalmology & Optometry, Wenzhou Medical University, Wenzhou 325035, China
- Engineering Research Center of Clinical Functional Materials and Diagnosis & Treatment Devices of Zhejiang Province, Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou 325001, China
- Key Laboratory of Photochemistry, Institute of Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing 100190, China
| | - Jian Ju
- Engineering Research Center of Clinical Functional Materials and Diagnosis & Treatment Devices of Zhejiang Province, Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou 325001, China
- Oujiang Lab, Wenzhou 325001, China
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23
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Akiyama Y, Kimura K, Komatsu S, Takarada T, Maeda M, Kikuchi A. A Simple Colorimetric Assay of Bleomycin-Mediated DNA Cleavage Utilizing Double-Stranded DNA-Modified Gold Nanoparticles. Chembiochem 2023; 24:e202200451. [PMID: 36156837 PMCID: PMC10092608 DOI: 10.1002/cbic.202200451] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Revised: 09/23/2022] [Indexed: 01/05/2023]
Abstract
A colorimetric assay of DNA cleavage by bleomycin (BLM) derivatives was developed utilizing high colloidal stability on double-stranded (ds) DNA-modified gold nanoparticles (dsDNA-AuNPs) possessing a cleavage site. The assay was performed using dsDNA-AuNPs treated with inactive BLM or activated BLM (Fe(II)⋅BLM). A 10-min exposure in dsDNA-AuNPs with inactive BLM treatment resulted in a rapid color change from red to purple because of salt-induced non-crosslinking aggregation of dsDNA-AuNPs. In contrast, the addition of active Fe(II)⋅BLM retained the red color, probably because of the formation of protruding structures at the outermost phase of dsDNA-AuNPs caused by BLM-mediated DNA cleavage. Furthermore, the results of our model experiments indicate that oxidative base release and DNA-cleavage pathways could be visually distinguished with color change. The present methodology was also applicable to model screening assays using several drugs with different mechanisms related to antitumor activity. These results strongly suggest that this assay with a rapid color change could lead to simple and efficient screening of potent antitumor agents.
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Affiliation(s)
- Yoshitsugu Akiyama
- Katsushika Division, Institute of Arts and Sciences, Tokyo University of Science, 6-3-1 Niijuku, 125-8585, Katsushika, Tokyo, Japan.,Department of Materials Science and Technology, Graduate School of Advanced Engineering, Tokyo University of Science, 6-3-1 Niijuku, 125-8585, Katsushika, Tokyo, Japan
| | - Kazunori Kimura
- Department of Materials Science and Technology, Graduate School of Advanced Engineering, Tokyo University of Science, 6-3-1 Niijuku, 125-8585, Katsushika, Tokyo, Japan
| | - Syuuhei Komatsu
- Department of Materials Science and Technology, Graduate School of Advanced Engineering, Tokyo University of Science, 6-3-1 Niijuku, 125-8585, Katsushika, Tokyo, Japan
| | - Tohru Takarada
- Surface and Interface Science Laboratory, RIKEN, 2-1 Hirosawa, 351-0198, Wako, Saitama, Japan
| | - Mizuo Maeda
- RIKEN Cluster for Pioneering Research, 2-1 Hirosawa, 351-0198, Wako, Saitama, Japan
| | - Akihiko Kikuchi
- Department of Materials Science and Technology, Graduate School of Advanced Engineering, Tokyo University of Science, 6-3-1 Niijuku, 125-8585, Katsushika, Tokyo, Japan
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24
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Li P, Zhan H, Tao S, Xie Z, Huang J. Bio-inspired aptamers decorated gold nanoparticles enable visualized detection of malathion. Front Bioeng Biotechnol 2023; 11:1165724. [PMID: 36937762 PMCID: PMC10020530 DOI: 10.3389/fbioe.2023.1165724] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Accepted: 02/23/2023] [Indexed: 03/06/2023] Open
Abstract
Biosensors always respond to the targets of interest in a specific manner, employing biological or bio-mimic recognition elements such as antibodies and aptamers. Inspired by target recognition in nature, an aptamer-mediated, gold nanoparticle-based sensing approach is developed in this work for effective determination of malathion. The sensing system consists of negatively charged aptamer probes, and polycationic proteins, protamine, as well as exceptional colorimetric nanoprobes, barely gold nanoparticles (AuNPs). Protamine molecules bound to aptamer probes hinder the aggregation of AuNPs, while no such inhibition is maintained when aptamer-specific malathion is introduced into the solution, thus leading to the solution colour change from red to blue observable by the naked eye. The assay is accomplished via a mix-and-measure step within 40 min with a detection limit as low as 1.48 μg/L (3σ/s rule). The assay method also exhibits high selectivity and good applicability for the quantification of malathion in tap water with recovery rates of 98.9%-109.4%. Additionally, the good detection accuracy is also confirmed by the high-performance liquid chromatography method. Therefore, the non-enzymatic, label- and device-free characteristics make it a robust tool for malathion assay in agricultural, environmental, and medical fields.
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Affiliation(s)
- Peng Li
- School of Biomedical Engineering, Southern Medical University, Guangzhou,China
- Department of Critical Care Medicine, Affiliated Hospital of Guangdong Medical University, Zhanjiang,China
| | - Haonan Zhan
- School of Biomedical Engineering, Southern Medical University, Guangzhou,China
| | - Sijian Tao
- School of Biomedical Engineering, Southern Medical University, Guangzhou,China
| | - Zhuohao Xie
- School of Biomedical Engineering, Southern Medical University, Guangzhou,China
- Department of Critical Care Medicine, Affiliated Hospital of Guangdong Medical University, Zhanjiang,China
| | - Jiahao Huang
- School of Biomedical Engineering, Southern Medical University, Guangzhou,China
- Department of Critical Care Medicine, Affiliated Hospital of Guangdong Medical University, Zhanjiang,China
- *Correspondence: Jiahao Huang,
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25
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Zhai R, Chen G, Liu G, Huang X, Xu X, Li L, Zhang Y, Xu D, Abd El-Aty AM. Comparison of Chemiluminescence Enzyme Immunoassay (Cl-ELISA) with Colorimetric Enzyme Immunoassay (Co-ELISA) for Imidacloprid Detection in Vegetables. Foods 2023; 12:foods12010196. [PMID: 36613412 PMCID: PMC9818176 DOI: 10.3390/foods12010196] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2022] [Revised: 12/22/2022] [Accepted: 12/26/2022] [Indexed: 01/03/2023] Open
Abstract
Imidacloprid is one of the most commonly used insecticides for managing pests, thus, improving the quality and yield of vegetables. The abuse/misuse of imidacloprid contaminates the environment and threatens human health. To reduce the risk, a colorimetric enzyme-linked immunoassay assay (Co-ELISA) and chemiluminescence enzyme-linked immunoassay assay (Cl-ELISA) were established to detect imidacloprid residues in vegetables. The linear range of Co-ELISA ranged between 1.56 μg/L and 200 μg/L with a limit of detection (LOD) of 1.56 μg/L. The values for Cl-ELISA were 0.19 μg/L to 25 μg/L with an LOD of 0.19 μg/L, which are lower than those of Co-ELISA. Fortifying Chinese cabbage, cucumber, and zucchini with imidacloprid at 10, 50, and 100 μg/L yielded recoveries between 81.7 and 117.6% for Co-ELISA and at 5, 10, and 20 µg/L yielded recoveries range from 69.7 to 120.6% for Cl-ELISA. These results indicate that Cl-ELISA has a high sensitivity and a rapid detection time, saving cost (antigen and antibody concentrations) and serving as a more efficient model for the rapid detection of imidacloprid residue.
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Affiliation(s)
- Rongqi Zhai
- Key Laboratory of Vegetables Quality and Safety Control, Laboratory of Quality & Safety Risk Assessment for Vegetable Products, Ministry of Agriculture and Rural Affairs, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Ge Chen
- Key Laboratory of Vegetables Quality and Safety Control, Laboratory of Quality & Safety Risk Assessment for Vegetable Products, Ministry of Agriculture and Rural Affairs, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Guangyang Liu
- Key Laboratory of Vegetables Quality and Safety Control, Laboratory of Quality & Safety Risk Assessment for Vegetable Products, Ministry of Agriculture and Rural Affairs, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Xiaodong Huang
- Key Laboratory of Vegetables Quality and Safety Control, Laboratory of Quality & Safety Risk Assessment for Vegetable Products, Ministry of Agriculture and Rural Affairs, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Xiaomin Xu
- Key Laboratory of Vegetables Quality and Safety Control, Laboratory of Quality & Safety Risk Assessment for Vegetable Products, Ministry of Agriculture and Rural Affairs, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Lingyun Li
- Key Laboratory of Vegetables Quality and Safety Control, Laboratory of Quality & Safety Risk Assessment for Vegetable Products, Ministry of Agriculture and Rural Affairs, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Yanguo Zhang
- Key Laboratory of Vegetables Quality and Safety Control, Laboratory of Quality & Safety Risk Assessment for Vegetable Products, Ministry of Agriculture and Rural Affairs, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Donghui Xu
- Key Laboratory of Vegetables Quality and Safety Control, Laboratory of Quality & Safety Risk Assessment for Vegetable Products, Ministry of Agriculture and Rural Affairs, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, China
- Correspondence: ; Tel.: +86-10-8210-6963
| | - A. M. Abd El-Aty
- Department of Pharmacology, Faculty of Veterinary Medicine, Cairo University, Giza 12211, Egypt
- Department of Medical Pharmacology, Faculty of Medicine, Atatürk University, 25240 Erzurum, Turkey
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26
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Pastrana C, Guerreiro JRL, Elumalai M, Carpena-Torres C, Crooke A, Carracedo G, Prado M, Huete-Toral F. Dual-Mode Gold Nanoparticle-Based Method for Early Detection of Acanthamoeba. Int J Mol Sci 2022; 23:ijms232314877. [PMID: 36499204 PMCID: PMC9740238 DOI: 10.3390/ijms232314877] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Revised: 11/23/2022] [Accepted: 11/25/2022] [Indexed: 11/29/2022] Open
Abstract
Acanthamoeba keratitis is an aggressive and rapidly progressing ocular pathology whose main risk factor is the use of contact lenses. An early and differential diagnosis is considered the main factor to prevent the progression and improve the prognosis of the pathology. However, current diagnosis techniques require time, complex and costly materials making an early diagnosis challenging. Thus, there is a need for fast, accessible, and accurate methods for Acanthamoeba detection by practitioners for timely and suitable treatment and even for contact lens user as preventive diagnosis. Here, we developed a dual-mode colorimetric-based method for fast, visual, and accurate detection of Acanthamoeba using gold nanoparticles (AuNPs). For this strategy, AuNPs were functionalized with thiolated probes and the presence of target Acanthamoeba genomic sequences, produce a colorimetric change from red to purple. This approach allows the detection of 0.02 and 0.009 μM of the unamplified Acanthamoeba genome by the naked eye in less than 20 min and by color analysis using a smartphone. Additionally, real samples were successfully analyzed showing the potential of the technology considering the lack of point-of-care tools that are mostly needed.
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Affiliation(s)
- Cristina Pastrana
- Ocupharm Research Group, Department of Optometry and Vision, Faculty of Optics and Optometry, Complutense University of Madrid, C/Arcos de Jalón 118, 28037 Madrid, Spain
- Correspondence: (C.P.); (J.R.L.G.)
| | - J. Rafaela L. Guerreiro
- Food Quality and Safety Group, International Iberian Nanotechnology Laboratory (INL), Av. Mestre José Veiga, 4715-330 Braga, Portugal
- BioMark@ISEP, School of Engineering of the Polytechnic Institute of Porto, Rua Dr. António Bernardino de Almeida 431, 4249-015 Porto, Portugal
- CEB/LABBELS, Center of Biological Engineering, Minho University, Campus de Gualtar, Rua da Universidade, 4710-057 Braga, Portugal
- Correspondence: (C.P.); (J.R.L.G.)
| | - Monisha Elumalai
- Food Quality and Safety Group, International Iberian Nanotechnology Laboratory (INL), Av. Mestre José Veiga, 4715-330 Braga, Portugal
- Weldon School of Biomedical Engineering, Purdue University, West Lafayette, IN 47907, USA
| | - Carlos Carpena-Torres
- Ocupharm Research Group, Department of Optometry and Vision, Faculty of Optics and Optometry, Complutense University of Madrid, C/Arcos de Jalón 118, 28037 Madrid, Spain
| | - Almudena Crooke
- Department of Biochemistry and Molecular Biology, Faculty of Optics and Optometry, Complutense University of Madrid, C/Arcos de Jalón 118, 28037 Madrid, Spain
| | - Gonzalo Carracedo
- Ocupharm Research Group, Department of Optometry and Vision, Faculty of Optics and Optometry, Complutense University of Madrid, C/Arcos de Jalón 118, 28037 Madrid, Spain
| | - Marta Prado
- Food Quality and Safety Group, International Iberian Nanotechnology Laboratory (INL), Av. Mestre José Veiga, 4715-330 Braga, Portugal
| | - Fernando Huete-Toral
- Ocupharm Research Group, Department of Optometry and Vision, Faculty of Optics and Optometry, Complutense University of Madrid, C/Arcos de Jalón 118, 28037 Madrid, Spain
- Department of Biochemistry and Molecular Biology, Faculty of Optics and Optometry, Complutense University of Madrid, C/Arcos de Jalón 118, 28037 Madrid, Spain
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27
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Zhou FZ, Chang YH, Hu CC, Chiu TC. Sodium-Alginate-Functionalized Silver Nanoparticles for Colorimetric Detection of Dimethoate. Biosensors (Basel) 2022; 12:1086. [PMID: 36551053 PMCID: PMC9775393 DOI: 10.3390/bios12121086] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Revised: 11/20/2022] [Accepted: 11/23/2022] [Indexed: 06/17/2023]
Abstract
Sodium alginate (SA) was used to functionalize the surfaces of silver nanoparticles (AgNPs) to form SA-AgNPs for sensing dimethoate with a rapid and sensitive visual readout. UV-Vis spectrophotometry, Fourier transform infrared spectroscopy, transmission electron microscopy, X-ray photoelectron spectroscopy, and zeta potential measurements were used to characterize SA-AgNPs that were synthesized under the ideal conditions. SA-AgNPs were spherical with an average size of 14.6 nm. The stability of SA-AgNPs was investigated with changes in pH, salinity, and storage time. This colorimetric assay of dimethoate relied on the change in the absorption ratio (A475/A400) of SA-AgNPs, resulting in their aggregation caused by dimethoate, leading to a visual change for SA-AgNPs from yellow to pale yellow. As a result, the absorption ratio (A475/A400) of SA-AgNPs showed good linearity in the range of 0.05 to 2.0 ppm (R2 = 0.9986) with a limit of detection (LOD) of 30 ppb. Adding other pesticides did not significantly change the absorption ratio of SA-AgNPs, indicating its high selectivity as a colorimetric assay. The sensor was successfully used to detect dimethoate in actual water samples.
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Affiliation(s)
- Feng-Zuo Zhou
- Department of Applied Science, National Taitung University, Taitung 950309, Taiwan
| | - Yung-Hsiang Chang
- Institute of Biochemical and Biomedical Engineering, National Taipei University of Technology, Taipei 106344, Taiwan
| | - Cho-Chun Hu
- Department of Applied Science, National Taitung University, Taitung 950309, Taiwan
| | - Tai-Chia Chiu
- Department of Applied Science, National Taitung University, Taitung 950309, Taiwan
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28
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Ren S, Cho S, Lin R, Gedi V, Park S, Ahn CW, Lee DK, Lee MH, Lee S, Kim S. Nonbiodegradable Spiegelmer-Driven Colorimetric Biosensor for Bisphenol A Detection. Biosensors (Basel) 2022; 12:bios12100864. [PMID: 36291000 PMCID: PMC9599196 DOI: 10.3390/bios12100864] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Revised: 09/27/2022] [Accepted: 10/05/2022] [Indexed: 05/30/2023]
Abstract
Spiegelmers are enantiomers of natural D-oligonucleotides that bind to targets with distinct structures such as aptamers. The high susceptibility of natural D-form aptamers to nucleases greatly hinders their application in biological environments. Here, a nonbiodegradable spiegelmer-based platform for the sensitive detection of bisphenol A (BPA) was developed. Due to the symmetric molecule of BPA, the D-form aptamer can be directly converted into mirror forms via chemical synthesis. Aptamer-target interactions that involve chemically synthesized spiegelmers were characterized by biolayer interferometry, and their stabilities were tested in various biological fluids by exposure to nucleases. We demonstrate for the first time the use of a nuclease-resistant spiegelmer in a simple, label-free gold nanoparticle-based colorimetric assay to detect BPA in a highly sensitive and selective manner. The aptasensor exhibits an LOD of 0.057 ng/mL and dynamic range of 105 (100 pg/mL to 10 mg/mL). With sensing capacity and biological stability, the developed aptasensor shows great potential to utilize in in-field applications such as water quality monitoring.
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Affiliation(s)
| | | | - Ruixan Lin
- School of Integrative Engineering, Chung-Ang University, Seoul 06974, Korea
| | - Vinayakumar Gedi
- Global Research Laboratory (GRL) for RNAi Medicine, Department of Chemistry, Sungkyunkwan University, Suwon 16419, Korea
| | - Sunyoung Park
- Gangnam Biomedical Research Center, Yonsei University College of Medicine, Seoul 06273, Korea
| | - Chul Woo Ahn
- Division of Endocrinology Department of Internal Medicine, Yonsei College of Medicine, Seoul 03722, Korea
- Severance Institute for Vascular and Metabolic Research, Yonsei University College of Medicine, Seoul 03722, Korea
| | - Dong-Ki Lee
- Global Research Laboratory (GRL) for RNAi Medicine, Department of Chemistry, Sungkyunkwan University, Suwon 16419, Korea
| | - Min-Ho Lee
- School of Integrative Engineering, Chung-Ang University, Seoul 06974, Korea
| | - Sangwook Lee
- PCL Inc., Seoul 05854, Korea
- Research Center for Advanced Science and Technology (RCAST), The University of Tokyo, Tokyo 153-8904, Japan
| | - Soyoun Kim
- PCL Inc., Seoul 05854, Korea
- Convergence Research Institute, Korea University, Seoul 02841, Korea
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Changtor P, Gupta YM, Yimtragool N. Optimization and application of loop-mediated isothermal amplification technique for sex identification in red-whiskered bulbul ( Pycnonotus jocosus). Ecol Evol 2022; 12:e9401. [PMID: 36225838 PMCID: PMC9534725 DOI: 10.1002/ece3.9401] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Revised: 09/13/2022] [Accepted: 09/16/2022] [Indexed: 11/06/2022] Open
Abstract
The red‐whiskered bulbul (Pycnonotus jocosus) is a popular avian species in Thailand and many other countries. The red‐whiskered bulbul has a high economic value, but breeding is challenging since sex identification is difficult. The PCR method is now used for sex identification. However, PCR amplification and post‐PCR analysis necessitate the use of a laboratory equipped with specialized scientific instruments, which is inconvenient for field operations. This research describes a method for amplification of DNA samples using the loop‐mediated isothermal amplification (LAMP) approach, which is a molecular biology methodology for isothermal amplification that is extremely sensitive, fast, and easy for post‐LAMP product visualization. Herein, total of 23 blood samples were collected and DNA was extracted. Two sets of LAMP primers were designed for CHD‐Z and CHD‐W genes. The colorimetric assay was used to investigate the best conditions for LAMP reactions and post‐LAMP product visualization. LAMP reactions for sex identification were compared to traditional PCR in terms of sensitivity and specificity. LAMP reactions were found to be 10‐fold more sensitive than PCR at 1 ng of DNA. When compared to electrophoresis analysis, the visualization with colorimetric assay using GelRed® and SYTO™ 9 was 100% accurate. The optimal LAMP condition tested simple DNA extracted from bird feathers using the HotSHOT technique. The result showed that the optimal condition could distinguish the sex of red‐whiskered bulbuls totally and accurately. A powerful method for red‐whiskered bulbul sex identification is demonstrated in this study, which can be used in field studies because it is quick and easy to perform, has high sensitivity, and does not require advanced scientific equipment.
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Affiliation(s)
- Phanupong Changtor
- Department of Biology, Faculty of ScienceNaresuan UniversityPhitsanulokThailand
| | - Yash Munnalal Gupta
- Department of Biology, Faculty of ScienceNaresuan UniversityPhitsanulokThailand
| | - Nonglak Yimtragool
- Department of Biology, Faculty of ScienceNaresuan UniversityPhitsanulokThailand
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Ahn BK, Ahn YJ, Lee YJ, Lee YH, Lee GJ. Simple and Sensitive Detection of Bacterial Hydrogen Sulfide Production Using a Paper-Based Colorimetric Assay. Sensors (Basel) 2022; 22:5928. [PMID: 35957485 PMCID: PMC9371415 DOI: 10.3390/s22155928] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Revised: 08/02/2022] [Accepted: 08/05/2022] [Indexed: 06/15/2023]
Abstract
Hydrogen sulfide (H2S) is known to participate in bacteria-induced inflammatory response in periodontal diseases. Therefore, it is necessary to quantify H2S produced by oral bacteria for diagnosis and treatment of oral diseases including halitosis and periodontal disease. In this study, we introduce a paper-based colorimetric assay for detecting bacterial H2S utilizing silver/Nafion/polyvinylpyrrolidone membrane and a 96-well microplate. This H2S-sensing paper showed a good sensitivity (8.27 blue channel intensity/μM H2S, R2 = 0.9996), which was higher than that of lead acetate paper (6.05 blue channel intensity/μM H2S, R2 = 0.9959). We analyzed the difference in H2S concentration released from four kinds of oral bacteria (Eikenella corrodens, Streptococcus sobrinus, Streptococcus mutans, and Lactobacillus casei). Finally, the H2S level in Eikenella corrodens while varying the concentration of cysteine and treatment time was quantified. This paper-based colorimetric assay can be utilized as a simple and effective tool for in vitro screening of H2S-producing ability of many bacteria as well as salivary H2S analysis.
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Affiliation(s)
- Byung-Ki Ahn
- Department of Biomedical Engineering, College of Medicine, Kyung Hee University, Seoul 02447, Korea
| | - Yong-Jin Ahn
- Department of Biomedical Engineering, College of Medicine, Kyung Hee University, Seoul 02447, Korea
| | - Young-Ju Lee
- Department of Biomedical Engineering, College of Medicine, Kyung Hee University, Seoul 02447, Korea
| | - Yeon-Hee Lee
- Department of Orofacial Pain and Oral Medicine, Kyung Hee University Dental Hospital, Kyung Hee University School of Dentistry, Seoul 02447, Korea
| | - Gi-Ja Lee
- Department of Biomedical Engineering, College of Medicine, Kyung Hee University, Seoul 02447, Korea
- Department of Medical Engineering, Kyung Hee University Graduate School, Seoul 02447, Korea
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Fang L, Huang H, Quirk JD, Zheng J, Shen D, Manion B, Mixdorf M, Karmakar P, Sudlow GP, Tang R, Achilefu S. Analysis of Stable Chelate-free Gadolinium Loaded Titanium Dioxide Nanoparticles for MRI-Guided Radionuclide Stimulated Cancer Treatment. CURR ANAL CHEM 2022; 18:826-835. [PMID: 36561765 PMCID: PMC9770661 DOI: 10.2174/1573411018666220321102736] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Background Recent studies demonstrate that titanium dioxide nanoparticles (TiO2 NPs) are an effective source of reactive oxygen species (ROS) for photodynamic therapy and radionuclide stimulated dynamic therapy (RaST). Unfortunately tracking the in vivo distribution of TiO2 NPs noninvasively remains elusive. Objective Given the use of gadolinium (Gd) chelates as effective contrast agents for magnetic resonance imaging (MRI), this study aims to (1) develop hybrid TiO2-Gd NPs that exhibit high relaxivity for tracking the NPs without loss of ROS generating capacity; and (2) establish a simple colorimetric assay for quantifying Gd loading and stability. Methods A chelate-free, heat-induced method was used to load Gd onto TiO2 NPs, which was coated with transferrin (Tf). A sensitive colorimetric assay and inductively coupled plasma mass spectrometry (ICP-MS) were used to determine Gd loading and stability of the TiO2-Gd-Tf NPs. Measurement of the relaxivity was performed on a 1.4 T relaxometer and a 4.7 T small animal magnetic resonance scanner to estimate the effects of magnetic field strength. ROS was quantified by activated dichlorodihydrofluorescein diacetate fluorescence. Cell uptake of the NPs and RaST were monitored by fluorescence microscopy. Both 3 T and 4.7 T scanners were used to image the in vivo distribution of intravenously injected NPs in tumor-bearing mice. Results A simple colorimetric assay accurately determined both the loading and stability of the NPs compared with the expensive and complex ICP-MS method. Coating of the TiO2-Gd NPs with Tf stabilized the nanoconstruct and minimized aggregation. The TiO2-Gd-Tf maintained ROS-generating capability without inducing cell death at a wide range of concentrations but induced significant cell death under RaST conditions in the presence of F-18 radiolabeled 2-fluorodeoxyglucose. The longitudinal (r1 = 10.43 mM-1s-1) and transverse (r2 = 13.43 mM-1s-1) relaxivity of TiO2-Gd-Tf NPs were about twice and thrice, respectively, those of clinically used Gd contrast agent (Gd-DTPA; r1 = 3.77 mM-1s-1 and r2 = 5.51 mM-1s-1) at 1.4 T. While the r1 (8.13 mM-1s-1) reduced to about twice that of Gd-DTPA (4.89 mM-1s-1) at 4.7 T, the corresponding r2 (87.15 mM-1s-1) increased by a factor 22.6 compared to Gd-DTPA (r2 = 3.85). MRI of tumor-bearing mice injected with TiO2-Gd-Tf NPs tracked the NPs distribution and accumulation in tumors. Conclusion This work demonstrates that Arsenazo III colorimetric assay can substitute ICP-MS for determining the loading and stability of Gd-doped TiO2 NPs. The new nanoconstruct enabled RaST effect in cells, exhibited high relaxivity, and enhanced MRI contrast in tumors in vivo, paving the way for in vivo MRI-guided RaST.
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Affiliation(s)
- Lei Fang
- School of Medicine, Mallinckrodt Institute of Radiology, Washington University in St. Louis, Saint Louis, United States,Department of Biomedical Engineering, School of Engineering, Washington University in St. Louis, Saint Louis, United States
| | - Hengbo Huang
- School of Medicine, Mallinckrodt Institute of Radiology, Washington University in St. Louis, Saint Louis, United States,Department of Biomedical Engineering, School of Engineering, Washington University in St. Louis, Saint Louis, United States
| | - James D. Quirk
- School of Medicine, Mallinckrodt Institute of Radiology, Washington University in St. Louis, Saint Louis, United States
| | - Jie Zheng
- School of Medicine, Mallinckrodt Institute of Radiology, Washington University in St. Louis, Saint Louis, United States
| | - Duanwen Shen
- School of Medicine, Mallinckrodt Institute of Radiology, Washington University in St. Louis, Saint Louis, United States
| | - Brad Manion
- School of Medicine, Mallinckrodt Institute of Radiology, Washington University in St. Louis, Saint Louis, United States
| | - Matthew Mixdorf
- School of Medicine, Mallinckrodt Institute of Radiology, Washington University in St. Louis, Saint Louis, United States
| | - Partha Karmakar
- School of Medicine, Mallinckrodt Institute of Radiology, Washington University in St. Louis, Saint Louis, United States
| | - Gail P. Sudlow
- School of Medicine, Mallinckrodt Institute of Radiology, Washington University in St. Louis, Saint Louis, United States
| | - Rui Tang
- School of Medicine, Mallinckrodt Institute of Radiology, Washington University in St. Louis, Saint Louis, United States
| | - Samuel Achilefu
- School of Medicine, Mallinckrodt Institute of Radiology, Washington University in St. Louis, Saint Louis, United States,Department of Biomedical Engineering, School of Engineering, Washington University in St. Louis, Saint Louis, United States,Department of Biochemistry and Molecular Biophysics, School of Medicine, Washington University in St. Louis, Saint Louis, United States,Department of Biomedical Engineering, University of Texas Southwestern, Dallas, United States,Address correspondence to this author at the Department of Biomedical Engineering, School of Engineering, Washington University in St. Louis, Saint Louis, United States;
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Liang X, Wang X, Zhang Y, Huang B, Han L. Selective Inhibition toward Dual Enzyme-like Activities of Iridium Nanozymes for a Specific Colorimetric Assay of Malathion without Enzymes. J Agric Food Chem 2022; 70:3898-3906. [PMID: 35258965 DOI: 10.1021/acs.jafc.1c06954] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
A colorimetric assay based on an enzyme-inhibition strategy is promising for the on-site detection of pesticide residues. Due to the high cost and low stability of enzymes, nanozymes (nanomaterials with enzyme-like activities) are widely developed as substitutes of enzymes. However, the inhibition of pesticides toward enzymes and nanozymes generally lacks selectivity. It is of great significance and challenge to design a specific pesticide assay based on an activity-inhibition strategy. Here, we discovered that iridium nanoparticles possess both peroxidase-like and oxidase-like activities under the same conditions, and their catalytic mechanisms are different. The synergistic effect of dual enzyme-like activities enhanced the colorimetric signal. Interestingly, the dual enzyme-mimicking activities could be simultaneously inhibited, and the inhibition effect exhibited high selectivity toward malathion. Considering the popularity and the hazards of malathion, a malathion assay method based on activity inhibition was established without enzymes and a redundant process. The synergistic effect of the selective inhibition of dual enzyme-like activities enhanced the selectivity and sensitivity. The proposed assay strategy opens up an avenue for specific assay of various pesticides.
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Affiliation(s)
- Xin Liang
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, 700 Changcheng Road, Qingdao 266109, Shandong, China
| | - Xiuzhong Wang
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, 700 Changcheng Road, Qingdao 266109, Shandong, China
| | - Yucui Zhang
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, 700 Changcheng Road, Qingdao 266109, Shandong, China
| | - Baojian Huang
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, 700 Changcheng Road, Qingdao 266109, Shandong, China
| | - Lei Han
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, 700 Changcheng Road, Qingdao 266109, Shandong, China
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Shahdeo D, Khan AA, Alanazi AM, Bajpai VK, Shukla S, Gandhi S. Molecular Diagnostic of Ochratoxin A With Specific Aptamers in Corn and Groundnut via Fabrication of a Microfluidic Device. Front Nutr 2022; 9:851787. [PMID: 35399674 PMCID: PMC8988673 DOI: 10.3389/fnut.2022.851787] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Accepted: 02/14/2022] [Indexed: 01/18/2023] Open
Abstract
Ochratoxin A (OTA) is one of the predominant mycotoxins that contaminate a wide range of food commodities. In the present study, a 36-mer aptamer was used as a molecular recognition element coupled with gold nanoparticles (AuNPs) for colorimetric detection of OTA in a microfluidic paper-based analytical device (μPADs). The μPADs consisted of three zones: control, detection, and sample, interconnected by channels. UV-vis spectroscopy (UV-vis), Dynamic Light Scattering (DLS), and Transmission Electron Microscopy (TEM) were used for characterization of AuNPs and AuNPs/Aptamer. According to the colorimetric assay, limit of detection (LOD) was found to be 242, 545.45, and 95.69 ng/mL in water, corn, and groundnut, respectively. The HPLC detection method achieved acceptable coefficient in standard curves (r 2 = 0.9995), improved detection range, and recovery rates in spiked corn and groundnut samples as 43.61 ± 2.18% to 87.10 ± 1.82% and 42.01 ± 1.31% to 86.03 ± 2.64% after multiple sample extractions and cleanup steps. However, the developed μPADs analytical device had the potent ability to rapidly detect OTA without any extraction pre-requirement, derivatization, and cleanup steps, thus illustrating its feasibility in the animal health sector, agricultural, and food industries.
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Affiliation(s)
| | - Azmat Ali Khan
- Pharmaceutical Biotechnology Laboratory, Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
| | - Amer M. Alanazi
- Pharmaceutical Biotechnology Laboratory, Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
| | - Vivek K. Bajpai
- Department of Energy and Materials Engineering, Dongguk University, Seoul, South Korea
| | - Shruti Shukla
- TERI-Deakin Nanobiotechnology Centre, Sustainable Agricultural Division, The Energy and Resources Institute, TERI Gram, Gurugram, India
| | - Sonu Gandhi
- DBT-National Institute of Animal Biotechnology (NIAB), Hyderabad, India
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Kim S, Sikes HD. Dual Photoredox Catalysis Strategy for Enhanced Photopolymerization-Based Colorimetric Biodetection. ACS Appl Mater Interfaces 2021; 13:57962-57970. [PMID: 34797978 DOI: 10.1021/acsami.1c17589] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Catalytic redox reactions have been employed to enhance colorimetric biodetection signals in point-of-care diagnostic tests, while their time-sensitive visual readouts may increase the risk of false results. To address this issue, we developed a dual photocatalyst signal amplification strategy that can be controlled by a fixed light dose, achieving time-independent colorimetric biodetection in paper-based tests. In this method, target-associated methylene blue (MB+) photocatalytically amplifies the concentration of eosin Y by oxidizing deactivated eosin Y (EYH3-) under red light, followed by photopolymerization with eosin Y autocatalysis under green light to generate visible hydrogels. Using the insights from mechanistic studies on MB+-sensitized photo-oxidation of EYH3-, we improved the photocatalytic efficiency of MB+ by suppressing its degradation. Lastly, we characterized 100- to 500-fold enhancement in sensitivity obtained from MB+-specific eosin Y amplification, highlighting the advantages of using dual photocatalyst signal amplification.
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Affiliation(s)
- Seunghyeon Kim
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Hadley D Sikes
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
- Antimicrobial Resistance Integrated Research Group, Singapore-MIT Alliance for Research and Technology, 1 CREATE Way, Singapore 138602, Singapore
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Mahmoudian F, Akbariqomi M, Heidari R, Ghahremani MH, Roshan N, Adabi M, Absalan M, Karimi F, Bahrami S, Fathi S, Tavoosidana G. Designing a fluorescence padlock probe-based biosensor and colorimetric assay for the detection of G12D KRAS mutation. Biomark Med 2021; 15:1741-1754. [PMID: 34784779 DOI: 10.2217/bmm-2021-0333] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Aim: Cell-free DNA in the plasma is known to be a potential biomarker for noninvasive diagnosis of oncogenic mutations. The authors aimed to design an optimized padlock probe-based hyperbranched rolling circle amplification biosensor to detect the KRAS G12D mutation using fluorescence and colorimetric methods. Methods: Single-factor experiments, Plackett-Burman design and response surface methodology were applied to optimize the padlock probe-based hyperbranched rolling circle amplification reaction. Results: The maximum fluorescence intensity was achieved at a padlock probe concentration of 1.5 pM and target concentration of 9 pM at 38°C ligation temperature. The proposed biosensor has a low detection limit of 60 fM of target DNA and a linear response in the concentration range of 60 fM to 0.2 pM. Conclusion: The results indicated the power of these assays to detect KRAS point mutations in liquid state reactions.
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Affiliation(s)
- Fatemeh Mahmoudian
- Department of Molecular Medicine, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Mostafa Akbariqomi
- Department of Molecular Medicine, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Reza Heidari
- Department of Molecular Medicine, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Mohammad H Ghahremani
- Department of Toxicology and Pharmacology, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Nader Roshan
- Department of Internal Medicine, Division of Gastroenterology, Imam Khomeini Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - Mahdi Adabi
- Department of Medical Nanotechnology, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Moloud Absalan
- Department of Molecular Medicine, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Fatemeh Karimi
- Department of Medical Nanotechnology, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Samira Bahrami
- Department of Biotechnology, School of Advanced Technologies in Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Samaneh Fathi
- Department of Medical Nanotechnology, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Gholamreza Tavoosidana
- Department of Molecular Medicine, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran
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Behzadifar S, Hosseini M, Mohammadnejad J, Asiabanha M. A new colorimetric assay for sensitive detection of glucose-6-phosphate dehydrogenase deficiency based on silver nanoparticles. Nanotechnology 2021; 33:055502. [PMID: 34649232 DOI: 10.1088/1361-6528/ac2fe5] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Accepted: 10/14/2021] [Indexed: 06/13/2023]
Abstract
Glucose-6-phosphate dehydrogenase (G6PD) is the principal enzyme in the pentose phosphate pathway that plays a fundamental role in the production of nicotinamide adenine dinucleotide phosphate, which is very important in preventing the oxidation of cells, especially red blood cells. This enzyme deficiency was associated with many disorders, the most common of which were hemolysis episodes. In the last decade, nanoparticles have been used to design optical and electronic sensors due to their unique properties. This report presents a new colorimetric method that used silver nanoparticles to detect glucose 6-phosphate dehydrogenase activity directly. The glucose-6-phosphate dehydrogenase detection mechanism was based on an aggregation of silver nanoparticles, leading to increased nanoparticle size, which causes discoloration. In the presence of the enzyme, the color of the solution was yellow, and when the enzyme was not present, the color of the solution was grayish. Utilizing this method, colorimetric sensing of glucose 6-phosphate dehydrogenase was gained with a detection limit of 0.009 U ml-1and a linear range of 0-16.0 U ml-1. In this way, the presence or absence of the enzyme can be easily detected with the naked eye during one step.
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Affiliation(s)
- Shakila Behzadifar
- Department of Life Science Engineering, Faculty of New Sciences & Technologies, University of Tehran, Tehran 1417614418, Iran
| | - Morteza Hosseini
- Department of Life Science Engineering, Faculty of New Sciences & Technologies, University of Tehran, Tehran 1417614418, Iran
- Medicinal Biomaterials Research Center, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Javad Mohammadnejad
- Department of Life Science Engineering, Faculty of New Sciences & Technologies, University of Tehran, Tehran 1417614418, Iran
| | - Majid Asiabanha
- Department of Clinical Biochemistry, School of Medicine, Tarbiat Modares University & Masoud Medical Lab, Tehran, Iran
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Porporato M, Isern E, Pellegrini M, Carlopio P, Becchio JM, Ríos M, Irigoyen MB, Vonmaro F, Massó D. Determination of a new constant to estimate glomerular filtration rate in pediatrics. ARCH ARGENT PEDIATR 2021. [PMID: 34569744 DOI: 10.5546/aap.2021.eng.e248] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
INTRODUCTION In pediatrics, glomerular filtration rate (GFR) may be estimated by measured corrected creatinine clearance (mcCrCl) (mL/min/1.73 m2) or the Schwartz formula (eGFR = height/plasma creatinine x k). The constant k depends on the plasma creatinine determination method: k = 0.55 for the Jaffe colorimetric method and k = 0.413 for the enzymatic method. Our laboratory uses the compensated kinetic colorimetric assay (CKC), and differences are observed between the estimated and measured GFR. Hypothesis: The proposed values of k do not adjust to the CKC method for plasma creatinine. OBJECTIVE To calculate a k value that allows to estimate GFR through creatinine measurement with CKC. METHODS Correlational, descriptive design. Patients aged 3-18 years seen at the Division of Pediatric Nephrology between July 2017 and January 2018 with normal or altered GFR, bladder and bowel control, and signed consent were included. Malnourished and myelomeningocele patients were excluded. Studied variables were plasma and urine creatinine, height, and 24-hour urine output. RESULTS A total of 184 patients were analyzed, their mean age was 10 years. Median mcCrCl was 123 mL/min/1.73 m2. The linear correlation between height and plasma creatinine and mcCrCl resulted in a k value of 0.499 (r = 0.974 and r2 = 0.949). The linear correlation between the estimated GFR (k = 0.499) and mcCrCl resulted in a 0.999 ß coefficient (r = 0.951 and r2 = 0.903). CONCLUSION According to this study, the constant that allows to estimate GFR when measuring plasma creatinine with the CKC method is 0.499.
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Affiliation(s)
- Melina Porporato
- Sección Nefrología Infantil, Hospital Profesor Alejandro Posadas, Buenos Aires, Argentina
| | - Elsa Isern
- Sección Nefrología Infantil, Hospital Profesor Alejandro Posadas, Buenos Aires, Argentina
| | - Mariana Pellegrini
- Sección Nefrología Infantil, Hospital Profesor Alejandro Posadas, Buenos Aires, Argentina
| | - Paula Carlopio
- Sección Nefrología Infantil, Hospital Profesor Alejandro Posadas, Buenos Aires, Argentina
| | - Jorgelina M Becchio
- Sección Nefrología Infantil, Hospital Profesor Alejandro Posadas, Buenos Aires, Argentina
| | - Mariela Ríos
- Sección Nefrología Infantil, Hospital Profesor Alejandro Posadas, Buenos Aires, Argentina
| | - María B Irigoyen
- Sección Nefrología Infantil, Hospital Profesor Alejandro Posadas, Buenos Aires, Argentina
| | - Fabiana Vonmaro
- Sector Química, Hospital Profesor Alejandro Posadas, Buenos Aires, Argentina
| | - Diana Massó
- Sección Nefrología Infantil, Hospital Profesor Alejandro Posadas, Buenos Aires, Argentina.
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Lee JW, Seo H, Young C, Trinh CT. Probing specificities of alcohol acyltransferases for designer ester biosynthesis with a high-throughput microbial screening platform. Biotechnol Bioeng 2021; 118:4655-4667. [PMID: 34436763 DOI: 10.1002/bit.27926] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2021] [Revised: 08/13/2021] [Accepted: 08/22/2021] [Indexed: 11/07/2022]
Abstract
Alcohol acyltransferases (AATs) enables microbial biosynthesis of a large space of esters by condensing an alcohol and an acyl-CoA. However, substrate promiscuity of AATs prevents microbial biosynthesis of designer esters with high selectivity. Here, we developed a high-throughput microbial screening platform that facilitates rapid identification of AATs for designer ester biosynthesis. First, we established a microplate-based culturing technique with in situ fermentation and extraction of esters. We validated its capability in rapid profiling of the alcohol substrate specificity of 20 chloramphenicol acetyltransferase variants derived from Staphylococcus aureus (CATSa ) for microbial biosynthesis of acetate esters with various exogeneous alcohol supply. By coupling the microplate-based culturing technique with a previously established colorimetric assay, we developed a high-throughput microbial screening platform for AATs. We demonstrated that this platform could not only probe the alcohol substrate specificity of both native and engineered AATs but also identify the beneficial mutations in engineered AATs for enhanced ester synthesis. We anticipate the high-throughput microbial screening platform provides a useful tool to identify novel wildtype and engineered AATs that have important roles in nature and industrial biocatalysis for designer bioester production.
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Affiliation(s)
- Jong-Won Lee
- Bredesen Center for Interdisciplinary Research and Graduate Education, University of Tennessee, Knoxville, Tennessee, USA
- Center for Bioenergy Innovation, Oak Ridge National Laboratory, Oak Ridge, Tennessee, USA
| | - Hyeongmin Seo
- Center for Bioenergy Innovation, Oak Ridge National Laboratory, Oak Ridge, Tennessee, USA
- Department of Chemical and Biomolecular Engineering, University of Tennessee, Knoxville, Tennessee, USA
| | - Caleb Young
- Department of Chemical and Biomolecular Engineering, University of Tennessee, Knoxville, Tennessee, USA
| | - Cong T Trinh
- Bredesen Center for Interdisciplinary Research and Graduate Education, University of Tennessee, Knoxville, Tennessee, USA
- Center for Bioenergy Innovation, Oak Ridge National Laboratory, Oak Ridge, Tennessee, USA
- Department of Chemical and Biomolecular Engineering, University of Tennessee, Knoxville, Tennessee, USA
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Lai Y, Li M, Liao X, Zou L. Smartphone-Assisted Colorimetric Detection of Glutathione and Glutathione Reductase Activity in Human Serum and Mouse Liver Using Hemin/G-Quadruplex DNAzyme. Molecules 2021; 26:molecules26165016. [PMID: 34443603 PMCID: PMC8398021 DOI: 10.3390/molecules26165016] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Revised: 08/12/2021] [Accepted: 08/16/2021] [Indexed: 11/26/2022] Open
Abstract
Abnormal levels of reduced glutathione (GSH) and glutathione reductase (GR) are usually related to a variety of diseases, so it is of great significance to determine the GSH concentration and GR activity. We herein develop a smartphone-assisted colorimetric biosensor for the detection of GSH and GR activity in human serum and mouse liver using hemin/G-quadruplex DNAzyme. Firstly, an obvious color change from colorless to green can be observed, owing to the high peroxidase-like activity of hemin/G-quadruplex DNAzyme toward 2,2′-azino-bis(3-ethylbenzothiozoline-6-sulfonic acid) (ABTS). With the addition of GSH or GR, the H2O2-mediated oxidation of ABTS catalyzed by hemin/G-quadruplex DNAzyme is significantly inhibited, resulting in remarkable color fading. Therefore, the detection of GSH and GR activity can be achieved by observing the color transition or measuring the absorbance at 420 nm. The detection limit was estimated to be as low as 0.1 μM and 10 μU/mL for GSH and GR, respectively. More interestingly, the RGB values of the sensing system can be identified by the smartphone application (APP, color collect), which makes it an ideal format for on-site determination and point-of-care testing (POCT). In addition, the proposed method shows excellent selectivity and acceptable applicability for the determination of GSH concentration and GR activity in human serum samples and mouse liver tissues, which might hold great application potential in clinical diagnosis and drug screening.
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Lv SW, Zhao N, Liu JM, Yang FE, Li CY, Wang S. Newly Constructed NiCo 2O 4 Derived from ZIF-67 with Dual Mimic Enzyme Properties for Colorimetric Detection of Biomolecules and Metal Ions. ACS Appl Mater Interfaces 2021; 13:25044-25052. [PMID: 34019375 DOI: 10.1021/acsami.1c06705] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Integration of novel bio-/nanostructures as effective sensing platforms is still of great significance for robust and rapid analysis. Herein, a novel metal-organic framework-derived NiCo2O4 was synthesized via a feasible templating method. Significantly, redox couples of both Ni3+/Ni2+ and Co3+/Co2+ provided richer oxidation-reduction reactions, thereby leading to an enhanced catalytic activity. Furthermore, NiCo2O4 as an enzyme mimic with peroxidase-like activity and oxidase-like activity could oxidize colorless thylbenzidine (TMB) to blue oxTMB in the absence of H2O2. Thus, a sensitive chromogenic sensing platform for detecting Fe2+, thiourea, cysteine (Cys), and epigallocatechin-3-gallate (EGCG) was proposed. The colorimetric detection methods exhibited great features of low limit of detection (LOD) and broad linear range. Owing to the complexation reaction, the chromogenic sensing system of TMB + NiCo2O4 + Cys achieved effective detection of Cu2+ and Mn2+ with the LODs of 0.0022 and 0.0181 mM, respectively. Developed detection methods with wide linear ranges of 0.008-0.1 mM for Cu2+ and 0.08-1 mM for Mn2+ had excellent practical potential. Similarly, the reaction system of TMB + NiCo2O4 + EGCG could achieve the colorimetric detection of Cu2+ and Fe3+. The great chromogenic sensing performance for detecting Cu2+ and Fe3+ with a broad linear range and a low LOD could be also realized.
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Affiliation(s)
- Shi-Wen Lv
- College of Environmental Science and Engineering, Nankai University, No.94 Weijin Road, Tianjin300071, China
| | - Ning Zhao
- Tianjin Key Laboratory of Food Science and Health, School of Medicine, Nankai University, No.94 Weijin Road, Tianjin300071, China
| | - Jing-Min Liu
- Tianjin Key Laboratory of Food Science and Health, School of Medicine, Nankai University, No.94 Weijin Road, Tianjin300071, China
| | - Fei-Er Yang
- Tianjin Key Laboratory of Food Science and Health, School of Medicine, Nankai University, No.94 Weijin Road, Tianjin300071, China
| | - Chun-Yang Li
- Tianjin Key Laboratory of Food Science and Health, School of Medicine, Nankai University, No.94 Weijin Road, Tianjin300071, China
| | - Shuo Wang
- Tianjin Key Laboratory of Food Science and Health, School of Medicine, Nankai University, No.94 Weijin Road, Tianjin300071, China
- College of Environmental Science and Engineering, Nankai University, No.94 Weijin Road, Tianjin300071, China
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Kim Y, Yang J, Hur H, Oh S, Lee HH. Highly Sensitive Colorimetric Assay of Cortisol Using Cortisol Antibody and Aptamer Sandwich Assay. Biosensors (Basel) 2021; 11:bios11050163. [PMID: 34065214 PMCID: PMC8160784 DOI: 10.3390/bios11050163] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 05/15/2021] [Accepted: 05/18/2021] [Indexed: 11/16/2022]
Abstract
In this study, cortisol, which is a key stress hormone, could be detected sensitively via the colorimetric assay of a polycarbonate (PC) and glass substrate by the sandwich assay of cortisol monoclonal antibody (c-Mab) and cortisol specific binding aptamer (c-SBA). A highly sensitive change in colorimetry with a limit of detection (LOD) of cortisol of 100 fM could be attained on the optically transparent substrate using the antibody aptamer sandwich (AAS) assay by corresponding stacks of 5 nm gold nanoparticles (Au NPs). The Au NPs were conjugated by the c-SBA and the c-Mab was tethered on the PC and glass substrates. For the AAS method, a simple UV-Vis spectrophotometer was adopted to quantify the cortisol concentrations at an absorbance wavelength of 520 nm. Therefore, this study demonstrates the versatility of the AAS method to measure very low concentrations of cortisol in diagnostic applications.
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Park J, Woo S, Kim J, Lee H, Yoo YE, Hong S. Rapid and simple single-chamber nucleic acid detection system prepared through nature-inspired surface engineering. Am J Cancer Res 2021; 11:6735-6745. [PMID: 34093850 PMCID: PMC8171086 DOI: 10.7150/thno.57153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Accepted: 04/16/2021] [Indexed: 11/18/2022] Open
Abstract
Background: Nucleic acid (NA)-based diagnostics enable a rapid response to various diseases, but current techniques often require multiple labor-intensive steps, which is a major obstacle to successful translation to a clinical setting. Methods: We report on a surface-engineered single-chamber device for NA extraction and in situ amplification without sample transfer. Our system has two reaction sites: a NA extraction chamber whose surface is patterned with micropillars and a reaction chamber filled with reagents for in situ polymerase-based NA amplification. These two sites are integrated in a single microfluidic device; we applied plastic injection molding for cost-effective, mass-production of the designed device. The micropillars were chemically activated via a nature-inspired silica coating to possess a specific affinity to NA. Results: As a proof-of-concept, a colorimetric pH indicator was coupled to the on-chip analysis of NA for the rapid and convenient detection of pathogens. The NA enrichment efficiency was dependent on the lysate incubation time, as diffusion controls the NA contact with the engineered surface. We could detect down to 1×103 CFU by the naked eye within one hour of the total assay time. Conclusion: We anticipate that the surface engineering technique for NA enrichment could be easily integrated as a part of various types of microfluidic chips for rapid and convenient nucleic acid-based diagnostics.
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Heidari-Bafroui H, Charbaji A, Anagnostopoulos C, Faghri M. A Colorimetric Dip Strip Assay for Detection of Low Concentrations of Phosphate in Seawater. Sensors (Basel) 2021; 21:3125. [PMID: 33946295 PMCID: PMC8125474 DOI: 10.3390/s21093125] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Revised: 04/20/2021] [Accepted: 04/22/2021] [Indexed: 12/12/2022]
Abstract
Nutrient pollution remains one of the greatest threats to water quality and imposes numerous public health and ecological concerns. Phosphate, the most common form of phosphorus, is one of the key nutrients necessary for plant growth. However, phosphate concentration in water should be carefully monitored for environmental protection requirements. Hence, an easy-to-use, field-deployable, and reliable device is needed to measure phosphate concentrations in the field. In this study, an inexpensive dip strip is developed for the detection of low concentrations of phosphate in water and seawater. In this device, ascorbic acid/antimony reagent was dried on blotting paper, which served as the detection zone, and was followed by a wet chemistry protocol using the molybdenum method. Ammonium molybdate and sulfuric acid were separately stored in liquid form to significantly improve the lifetime of the device and enhance the reproducibility of its performance. The device was tested with deionized water and Sargasso Sea seawater. The limits of detection and quantification for the optimized device using a desktop scanner were 0.134 ppm and 0.472 ppm for phosphate in water and 0.438 ppm and 1.961 ppm in seawater, respectively. The use of the portable infrared lightbox previously developed at our lab improved the limits of detection and quantification by a factor of three and were 0.156 ppm and 0.769 ppm for the Sargasso Sea seawater. The device's shelf life, storage conditions, and limit of detection are superior to what was previously reported for the paper-based phosphate detection devices.
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Affiliation(s)
- Hojat Heidari-Bafroui
- Microfluidics Laboratory, Department of Mechanical, Industrial and Systems Engineering, University of Rhode Island, Kingston, RI 02881, USA; (A.C.); (C.A.); (M.F.)
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Xu Z, Zheng K, Du Z, Xin J, Luo M, Wang F. Colorimetric identification of miRNA-195 sequence for diagnosing osteosarcoma. Biotechnol Appl Biochem 2021; 69:974-980. [PMID: 33882171 DOI: 10.1002/bab.2169] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2021] [Accepted: 04/12/2021] [Indexed: 11/06/2022]
Abstract
Improving biosensing performance is mandatory for biomolecular recognition and disease identification. Gold nanoparticle (GNP)-based colorimetric assay is the easy and cost-effective identification method by a naked eye detection. In this research, osteosarcoma biomarker (miRNA-195) was identified by citrate-capped GNP-colorimetric assay. As salt-induced aggregation was used to observe the color changes of GNP, sodium chloride (NaCl) and capture DNA were optimized as 50 mM and ∼20 pmol, respectively. The capture DNA only on GNP could not stabilize under high NaCl, and the color of GNP turned into purple. At the same time, when capture DNA was hybridized with target, the condition can stabilize the GNP under higher NaCl, which retains the GNP color as red. This simple assay reaches the limit of detection of target miRNA-195 as ∼40 fmol. Control experiments with noncomplementary DNA turned the solution into purple, indicating the specific detection of target. The mixture of target in diluted serum retains the color of the GNP solution to be red, indicating the selective detection of target DNA. This simple assay helps to quantify the level of miRNA-195 target DNA and to diagnose the osteosarcoma.
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Affiliation(s)
- Zhendong Xu
- Department of Sports Medicine, Dalian Municipal Central Hospital Affiliated of Dalian Medical University, Dalian, China
| | - Kunlun Zheng
- Department of Orthopaedics, Second Affiliated Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Zhuang Du
- Department of Orthopedics, Dalian Municipal Central Hospital Affiliated of Dalian Medical University, Dalian, China
| | - Jindang Xin
- Department of Orthopaedics, Second Affiliated Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Meimei Luo
- Department of Orthopedics, Xijing Hospital, Air Force Medical University, Xi'an, China
| | - Fengdan Wang
- The second Department of Orthopedics, The First Hospital of Jilin University, Changchun, China
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Piovarci I, Melikishvili S, Tatarko M, Hianik T, Thompson M. Detection of Sub-Nanomolar Concentration of Trypsin by Thickness-Shear Mode Acoustic Biosensor and Spectrophotometry. Biosensors (Basel) 2021; 11:117. [PMID: 33920444 PMCID: PMC8070231 DOI: 10.3390/bios11040117] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/11/2021] [Revised: 03/26/2021] [Accepted: 04/06/2021] [Indexed: 05/03/2023]
Abstract
The determination of protease activity is very important for disease diagnosis, drug development, and quality and safety assurance for dairy products. Therefore, the development of low-cost and sensitive methods for assessing protease activity is crucial. We report two approaches for monitoring protease activity: in a volume and at surface, via colorimetric and acoustic wave-based biosensors operated in the thickness-shear mode (TSM), respectively. The TSM sensor was based on a β-casein substrate immobilized on a piezoelectric quartz crystal transducer. After an enzymatic reaction with trypsin, it cleaved the surface-bound β-casein, which increased the resonant frequency of the crystal. The limit of detection (LOD) was 0.48 ± 0.08 nM. A label-free colorimetric assay for trypsin detection has also been performed using β-casein and 6-mercaptohexanol (MCH) functionalized gold nanoparticles (AuNPs/MCH-β-casein). Due to the trypsin cleavage of β-casein, the gold nanoparticles lost shelter, and MCH increased the attractive force between the modified AuNPs. Consequently, AuNPs aggregated, and the red shift of the absorption spectra was observed. Spectrophotometric assay enabled an LOD of 0.42 ± 0.03 nM. The Michaelis-Menten constant, KM, for reverse enzyme reaction has also been estimated by both methods. This value for the colorimetric assay (0.56 ± 0.10 nM) is lower in comparison with those for the TSM sensor (0.92 ± 0.44 nM). This is likely due to the better access of the trypsin to the β-casein substrate at the surface of AuNPs in comparison with those at the TSM transducer.
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Affiliation(s)
- Ivan Piovarci
- Department of Nuclear Physics and Biophysics, Faculty of Mathematics, Physics and Informatics, Comenius University, Mlynska dolina F1, 84248 Bratislava, Slovakia; (I.P.); (S.M.); (M.T.)
| | - Sopio Melikishvili
- Department of Nuclear Physics and Biophysics, Faculty of Mathematics, Physics and Informatics, Comenius University, Mlynska dolina F1, 84248 Bratislava, Slovakia; (I.P.); (S.M.); (M.T.)
| | - Marek Tatarko
- Department of Nuclear Physics and Biophysics, Faculty of Mathematics, Physics and Informatics, Comenius University, Mlynska dolina F1, 84248 Bratislava, Slovakia; (I.P.); (S.M.); (M.T.)
| | - Tibor Hianik
- Department of Nuclear Physics and Biophysics, Faculty of Mathematics, Physics and Informatics, Comenius University, Mlynska dolina F1, 84248 Bratislava, Slovakia; (I.P.); (S.M.); (M.T.)
| | - Michael Thompson
- Lash Miller Laboratories, Department of Chemistry, University of Toronto, Toronto, ON M5S 3H6, Canada
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Mavaei M, Chahardoli A, Fattahi A, Khoshroo A. A Simple Method for Developing a Hand-Drawn Paper-Based Sensor for Mercury; Using Green Synthesized Silver Nanoparticles and Smartphone as a Hand-Held-Device for Colorimetric Assay. Glob Chall 2021; 5:2000099. [PMID: 33854790 PMCID: PMC8025396 DOI: 10.1002/gch2.202000099] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/04/2020] [Revised: 01/18/2021] [Indexed: 06/12/2023]
Abstract
Mercury ions are highly toxic at trace levels, and its pollution has posed a significant threat to the environment and public health, where current detection methods mainly require laborious operation and expensive instrumentation. Herein, a simple, cost-effective, instrument-free approach for selective detection of Hg2+ based on a hand-drawn paper-based naked-eye colorimetric device is developed. To develop a hand-drawn paper-based device, a crayon is used to build hydrophobic barriers and a paper puncher is applied to obtain patterns as a sensing zone. A green method for the synthesis of silver nanoparticles (AgNPs) is applied using Achillea Wilhelmsii (Aw) extract. The sensing ability of Aw-AgNPs toward Hg2+ is investigated in both solution-phase and paper substrate loaded with Aw-AgNPs using colorimetric methods. For the paper-based sensor, the quantification of the target relies on the visual readout of a color-changed sensing zone modified with Aw-AgNPs. Under optimal conditions, the color of Aw-AgNPs in aqueous solution and on the coated paper substrate can change from brown to colorless upon addition of target, with a detection limit of 28 × 10-9 m and 0.30 × 10-6 m, respectively. In conclusion, the present study indicates the potential of this hand-drawn eco-friendly paper-based sensor for monitoring of mercury.
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Affiliation(s)
- Maryamosadat Mavaei
- Pharmaceutical Sciences Research CenterHealth instituteKermanshah University of Medical SciencesKermanshah6715847141Iran
| | - Azam Chahardoli
- Pharmaceutical Sciences Research CenterHealth instituteKermanshah University of Medical SciencesKermanshah6715847141Iran
| | - Ali Fattahi
- Pharmaceutical Sciences Research CenterHealth instituteKermanshah University of Medical SciencesKermanshah6715847141Iran
- Medical Biology Research CenterKermanshah University of Medical SciencesKermanshah6715847141Iran
- Present address:
Center for Applied NanoBioscience and MedicineCollege of Medicine PhoenixUniversity of ArizonaPhoenixAZUnited States
| | - Alireza Khoshroo
- Pharmaceutical Sciences Research CenterHealth instituteKermanshah University of Medical SciencesKermanshah6715847141Iran
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Herbst K, Meurer M, Kirrmaier D, Anders S, Knop M, Thi VLD. Colorimetric RT-LAMP and LAMP-sequencing forDetecting SARS-CoV-2 RNA in Clinical Samples. Bio Protoc 2021; 11:e3964. [PMID: 33855122 DOI: 10.21769/bioprotoc.3964] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Revised: 01/13/2021] [Accepted: 01/14/2021] [Indexed: 11/02/2022] Open
Abstract
During pandemics, such as the one caused by SARS-CoV-2 coronavirus, simple methods to rapidly test large numbers of people are needed. As a faster and less resource-demanding alternative to detect viral RNA by conventional qPCR, we used reverse transcription loop-mediated isothermal amplification (RT-LAMP). We previously established colorimetric RT-LAMP assays on both purified and unpurified SARS-CoV-2 clinical specimens and further developed a multiplexed sequencing protocol (LAMP-sequencing) to analyze the outcome of many RT-LAMP reactions at the same time (Dao Thi et al., 2020). Extending on this work, we hereby provide step-by-step protocols for both RT-LAMP assays and read-outs.
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Affiliation(s)
- Konrad Herbst
- Center for Molecular Biology of Heidelberg University (ZMBH), Heidelberg, Germany
| | - Matthias Meurer
- Center for Molecular Biology of Heidelberg University (ZMBH), Heidelberg, Germany
| | | | - Simon Anders
- Center for Molecular Biology of Heidelberg University (ZMBH), Heidelberg, Germany
| | - Michael Knop
- Center for Molecular Biology of Heidelberg University (ZMBH), Heidelberg, Germany.,German Cancer Research Center (DKFZ), Heidelberg, Germany.,DKFZ-ZMBH Alliance, Heidelberg, Germany
| | - Viet Loan Dao Thi
- Schaller Research Group, Department of Infectious Diseases, Virology, Heidelberg University, Heidelberg, Germany
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Charbaji A, Heidari-Bafroui H, Anagnostopoulos C, Faghri M. A New Paper-Based Microfluidic Device for Improved Detection of Nitrate in Water. Sensors (Basel) 2020; 21:s21010102. [PMID: 33375290 PMCID: PMC7794956 DOI: 10.3390/s21010102] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Revised: 12/06/2020] [Accepted: 12/23/2020] [Indexed: 12/11/2022]
Abstract
In this paper, we report a simple and inexpensive paper-based microfluidic device for detecting nitrate in water. This device incorporates two recent developments in paper-based technology suitable for nitrate detection and has an optimized microfluidic design. The first technical advancement employed is an innovative fibrous composite material made up of cotton fibers and zinc microparticles that can be incorporated in paper-based devices and results in better nitrate reduction. The second is a detection zone with an immobilized reagent that allows the passage of a larger sample volume. Different acids were tested—citric and phosphoric acids gave better results than hydrochloric acid since this acid evaporates completely without leaving any residue behind on paper. Different microfluidic designs that utilize various fluid control technologies were investigated and a design with a folding detection zone was chosen and optimized to improve the uniformity of the signal produced. The optimized design allowed the device to achieve a limit of detection and quantification of 0.53 ppm and 1.18 ppm, respectively, for nitrate in water. This accounted for more than a 40% improvement on what has been previously realized for the detection of nitrate in water using paper-based technology.
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Ninwong B, Ratnarathorn N, Henry CS, Mace CR, Dungchai W. Dual Sample Preconcentration for Simultaneous Quantification of Metal Ions Using Electrochemical and Colorimetric Assays. ACS Sens 2020; 5:3999-4008. [PMID: 33237766 DOI: 10.1021/acssensors.0c01793] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
A paper-based method for heating preconcentration (PAD-HP) has been developed for the determination of Pb2+, Cd2+, Fe3+, and Ni2+. The design of our heating system was evaluated for dual quantification of ions using electrochemical and colorimetric methods simultaneously. The PAD-HP was used to detect Pb2+ and Cd2+ by anodic stripping voltammetry and to detect Fe3+ and Ni2+ by colorimetric reactions. Assay conditions were optimized by evaluating performance when changing the concentration of the colorimetric reagent, eluent volume, electrolyte concentration, and electrochemical parameters. Limits of detection (LOD) were determined to be 0.97 and 2.33 μg L-1 for Pb2+ and Cd2+ (via voltammetry) and 0.03 and 0.04 mg L-1 for Fe3+ and Ni2+ (via colorimetric assay), respectively. The relative standard deviations for assays were in the range of 5.76 to 10.12%. We observed that the PAD-HP method significantly enhanced the signal of all metals ions (14-100-fold, depending on the metal) in comparison to paper-based devices that did not use a heating preconcentration system. This PAD-HP method was successfully applied to the determination of metals ions in samples of drinking water, tap water, pond water, and wastewater. These results suggest that our approach can provide a convenient strategy to monitor aqueous samples for heavy metals with high sensitivity and selectivity.
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Affiliation(s)
- Benjawan Ninwong
- Organic Synthesis, Electrochemistry & Natural Product Research Unit, Department of Chemistry, Faculty of Science, King Mongkut’s University of Technology Thonburi, Prachautid Road, Thungkru, Bangkok 10140, Thailand
- Nanomaterials Chemistry Research Unit, Department of Chemistry, Faculty of Science and Technology, Nakhon Si Thammarat Rajabhat University, Nakhon Si Thammarat 80280, Thailand
| | - Nalin Ratnarathorn
- Organic Synthesis, Electrochemistry & Natural Product Research Unit, Department of Chemistry, Faculty of Science, King Mongkut’s University of Technology Thonburi, Prachautid Road, Thungkru, Bangkok 10140, Thailand
| | - Charles S. Henry
- Departments of Chemistry and Chemical & Biological Engineering, Colorado State University, Fort Collins, Colorado 80523, United States
| | - Charles R. Mace
- Department of Chemistry, Tufts University, 62 Talbot Avenue, Medford, Massachussets 02155, United States
| | - Wijitar Dungchai
- Organic Synthesis, Electrochemistry & Natural Product Research Unit, Department of Chemistry, Faculty of Science, King Mongkut’s University of Technology Thonburi, Prachautid Road, Thungkru, Bangkok 10140, Thailand
- Applied Science & Engineering for Social Solution Unit, Faculty of Science, King Mongkut’s University of Technology Thonburi, Prachautid Road, Thungkru, Bangkok 10140, Thailand
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Anantharaj A, Das SJ, Sharanabasava P, Lodha R, Kabra SK, Sharma TK, Medigeshi GR. Visual Detection of SARS-CoV-2 RNA by Conventional PCR-Induced Generation of DNAzyme Sensor. Front Mol Biosci 2020; 7:586254. [PMID: 33425988 PMCID: PMC7793695 DOI: 10.3389/fmolb.2020.586254] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Accepted: 12/02/2020] [Indexed: 12/23/2022] Open
Abstract
The gold standard for the diagnosis of SARS-CoV-2, the causative agent of COVID-19, is real-time polymerase chain reaction (PCR), which is labor-intensive, expensive, and not widely available in resource-poor settings. Therefore, it is imperative to develop novel, accurate, affordable, and easily accessible assays/sensors to diagnose and isolate COVID-19 cases. To address this unmet need, we utilized the catalytic potential of peroxidase-like DNAzyme and developed a simple visual detection assay for SARS-CoV-2 RNA using a conventional thermal cycler by the PCR-induced generation of DNAzyme sensor. The performance of RT-PCR DNAzyme-based sensor was comparable to that of real-time PCR. The pilot scale validation of RT-PCR DNAzyme-based sensor has shown ~100% sensitivity and specificity in clinical specimens (nasopharyngeal swab, n = 34), with a good correlation (Spearman r = 0.799) with the Ct-value of fluorescence probe-based real-time PCR. These findings clearly indicate the potential of this inexpensive, sensitive, and specific molecular diagnostic test to extend our testing capabilities for the detection of SARS-CoV-2 to curtail COVID-19 transmission.
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Affiliation(s)
- Anbalagan Anantharaj
- National Capital Region - Biotech Science Cluster, Translational Health Science and Technology Institute (THSTI), Faridabad, India
| | - Soon Jyoti Das
- National Capital Region - Biotech Science Cluster, Translational Health Science and Technology Institute (THSTI), Faridabad, India
| | - Patil Sharanabasava
- National Capital Region - Biotech Science Cluster, Translational Health Science and Technology Institute (THSTI), Faridabad, India
| | - Rakesh Lodha
- Department of Pediatrics, All India Institute of Medical Sciences, New Delhi, India
| | - Sushil K. Kabra
- Department of Pediatrics, All India Institute of Medical Sciences, New Delhi, India
| | - Tarun Kumar Sharma
- National Capital Region - Biotech Science Cluster, Translational Health Science and Technology Institute (THSTI), Faridabad, India
| | - Guruprasad R. Medigeshi
- National Capital Region - Biotech Science Cluster, Translational Health Science and Technology Institute (THSTI), Faridabad, India
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