Multicolor colorimetric detection of ochratoxin A via structure-switching aptamer and enzyme-induced metallization of gold nanorods

Tian, Fengyu; Zhou, Jing; Fu, Ruijie; Cui, Yongliang; Zhao, Qiyang; Jiao, Bining; He, Yue

doi:10.1016/j.foodchem.2020.126607

Cited by 78 publications

(28 citation statements)

References 45 publications

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“…Another interesting feature of aptamers is that they effectively preserve their properties in various experimental conditions [ 149 , 150 ]. Aptasensing bio-assays have various recognition mechanisms and can bind to a wide range of regulatory proteins [ 138 , 151 ], enzymes [ 152 , 153 ], mono- and polyclonal antibodies [ 154 ], amino acids [ 155 ], growth factors [ 156 ], toxins [ 157 ], low molecular weight vitamins [ 158 ], cancer biomarkers [ 159 – 161 ], and even some metal ions [ 162 ]. Large quantities of aptamers can be biochemically synthesized most frequently through the systematic evolution of ligands by exponential enrichment (SELEX).…”

Section: Detection Methodsmentioning

confidence: 99%

An Overview on SARS-CoV-2 (COVID-19) and Other Human Coronaviruses and Their Detection Capability via Amplification Assay, Chemical Sensing, Biosensing, Immunosensing, and Clinical Assays

et al. 2020

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A novel coronavirus of zoonotic origin (SARS-CoV-2) has recently been recognized in patients with acute respiratory disease. COVID-19 causative agent is structurally and genetically similar to SARS and bat SARS-like coronaviruses. The drastic increase in the number of coronavirus and its genome sequence have given us an unprecedented opportunity to perform bioinformatics and genomics analysis on this class of viruses. Clinical tests like PCR and ELISA for rapid detection of this virus are urgently needed for early identification of infected patients. However, these techniques are expensive and not readily available for point-of-care (POC) applications. Currently, lack of any rapid, available, and reliable POC detection method gives rise to the progression of COVID-19 as a horrible global problem. To solve the negative features of clinical investigation, we provide a brief introduction of the general features of coronaviruses and describe various amplification assays, sensing, biosensing, immunosensing, and aptasensing for the determination of various groups of coronaviruses applied as a template for the detection of SARS-CoV-2. All sensing and biosensing techniques developed for the determination of various classes of coronaviruses are useful to recognize the newly immerged coronavirus, i.e., SARS-CoV-2. Also, the introduction of sensing and biosensing methods sheds light on the way of designing a proper screening system to detect the virus at the early stage of infection to tranquilize the speed and vastity of spreading. Among other approaches investigated among molecular approaches and PCR or recognition of viral diseases, LAMP-based methods and LFAs are of great importance for their numerous benefits, which can be helpful to design a universal platform for detection of future emerging pathogenic viruses.

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Section: Detection Methodsmentioning

confidence: 99%

An Overview on SARS-CoV-2 (COVID-19) and Other Human Coronaviruses and Their Detection Capability via Amplification Assay, Chemical Sensing, Biosensing, Immunosensing, and Clinical Assays

et al. 2020

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“…A comparable approach was also described by the same group while replacing MnO 2 nanosheets by gold nanorods (AuNRs) and silver ions [53]. After magnetic separation, generated AA acted as reducing agents that transform Ag + to metal silver forming an Ag shell on the surface of AuNRs (Figure 3c).…”

Section: Solution-based Assaysmentioning

confidence: 85%

Advances in Colorimetric Strategies for Mycotoxins Detection: Toward Rapid Industrial Monitoring

Majdinasab

Aissa

Marty

2020

Toxins

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Mycotoxins contamination is a global public health concern. Therefore, highly sensitive and selective techniques are needed for their on-site monitoring. Several approaches are conceivable for mycotoxins analysis, among which colorimetric methods are the most attractive for commercialization purposes thanks to their visual read-out, easy operation, cost-effectiveness, and rapid response. This review covers the latest achievements in the last five years for the development of colorimetric methods specific to mycotoxins analysis, with a particular emphasis on their potential for large-scale applications in food industries. Gathering all types of (bio)receptors, main colorimetric methods are critically discussed, including enzyme-linked assays, lateral flow-assays, microfluidic devices, and homogenous in-solution strategies. This special focus on colorimetry as a versatile transduction method for mycotoxins analysis is comprehensively reviewed for the first time.

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“…Another OTA assay was developed based on the OTA aptamer and the enzyme-induced metallization of gold nanorods (Tian et al, 2020 ). This assay achieved an result LOD of 0.9 nM.…”

Section: G-quadruplex-based Detection Methods For Otamentioning

confidence: 99%

“…A promising on-site visual semi-quantitative detection method for OTA in foods was reported by Tian et al ( 2020 ). This high-resolution colorimetric assay was based on the ability of G4 structures to capture OTA in a matrix, leading to a color change that was visible to the naked eye.…”

Section: G-quadruplex-based Detection Methods For Otamentioning

confidence: 99%

Recent Progress and Development of G-Quadruplex-Based Luminescent Assays for Ochratoxin A Detection

Nao

Wang

et al. 2020

Front. Chem.

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Ochratoxin A (OTA) is a mycotoxin that is widespread throughout the world. It contaminates foods such as vegetables, fruits, and rice. It harms human health and has potential carcinogenic effects. The G-quadruplex (G4) is a tetraplexed DNA structure generated from guanine-rich DNA that has found emerging use in aptamer-based sensing systems. This review outlines the status of OTA contamination and conventional detection methods for OTA. Various G4-based methods to detect OTA developed in recent years are summarized along with their advantages and disadvantages compared to existing approaches.

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Multicolor colorimetric detection of ochratoxin A via structure-switching aptamer and enzyme-induced metallization of gold nanorods

Cited by 78 publications

References 45 publications

An Overview on SARS-CoV-2 (COVID-19) and Other Human Coronaviruses and Their Detection Capability via Amplification Assay, Chemical Sensing, Biosensing, Immunosensing, and Clinical Assays

An Overview on SARS-CoV-2 (COVID-19) and Other Human Coronaviruses and Their Detection Capability via Amplification Assay, Chemical Sensing, Biosensing, Immunosensing, and Clinical Assays

Advances in Colorimetric Strategies for Mycotoxins Detection: Toward Rapid Industrial Monitoring

Recent Progress and Development of G-Quadruplex-Based Luminescent Assays for Ochratoxin A Detection

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