1
|
Kang S, Yuan D, Barber R, Davis JJ. Antigen-Mimic Nanoparticles in Ultrasensitive on-Chip Integrated Anti-p53 Antibody Quantification. ACS Sens 2024; 9:1475-1481. [PMID: 38441485 DOI: 10.1021/acssensors.3c02568] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/23/2024]
Abstract
As a tumor-suppressing protein, p53 plays a crucial role in preventing cancer development. Its utility as an early cancer detection tool is significant, potentially enabling clinicians to forestall disease advancement and improve patient prognosis. In response to the pathological overexpression of this antigen in tumors, the prevalence of anti-p53 antibodies increases in serum, in a manner quantitatively indicative of cancer progression. This spike can be detected through techniques, such as Western blotting, immunohistochemistry, and immunoprecipitation. In this study, we present an electrochemical approach that supports ultrasensitive and highly selective anti-p53 autoantibody quantification without the use of an immuno-modified electrode. We specifically employ antigen-mimicking and antibody-capturing peptide-coated magnetic nanoparticles, along with an AC magnetic field-promoted sample mixing, prior to the presentation of Fab-captured targets to simple lectin-modified sensors. The subfemtomolar assays are highly selective and support quantification from serum-spiked samples within minutes.
Collapse
Affiliation(s)
- Shaoyu Kang
- Department of Chemistry, University of Oxford, South Parks Road, Oxford OX1 3QZ, U.K
| | - Daohe Yuan
- Department of Chemistry, University of Oxford, South Parks Road, Oxford OX1 3QZ, U.K
| | - Robert Barber
- Department of Chemistry, University of Oxford, South Parks Road, Oxford OX1 3QZ, U.K
| | - Jason J Davis
- Department of Chemistry, University of Oxford, South Parks Road, Oxford OX1 3QZ, U.K
| |
Collapse
|
2
|
Marshall LR, Korendovych IV. Screening of oxidative behavior in catalytic amyloid assemblies. Methods Enzymol 2024; 697:15-33. [PMID: 38816121 DOI: 10.1016/bs.mie.2024.01.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/01/2024]
Abstract
Once considered a thermodynamic minimum of the protein fold or as simply by-products of a misfolding process, amyloids are increasingly showing remarkable potential for promoting enzyme-like catalysis. Recent studies have demonstrated a diverse range of catalytic behaviors that amyloids can promote way beyond the hydrolytic behaviors originally reported. We and others have demonstrated the strong propensity of catalytic amyloids to facilitate redox reactions both in the presence and in the absence of metal cofactors. Here, we present a detailed protocol for measuring the oxidative ability of supramolecular peptide assemblies.
Collapse
Affiliation(s)
- Liam R Marshall
- Department of Chemistry and Biochemistry, Baylor University, Waco, TX, United States.
| | - Ivan V Korendovych
- Department of Chemistry and Biochemistry, Baylor University, Waco, TX, United States
| |
Collapse
|
3
|
Thoeny V, Melnik E, Maier T, Kurzhals S, Derntl C, Pulverer W, Mutinati GC, Asadi M, Mehrabi P, Huetter M, Schalkhammer T, Lieberzeit P, Hainberger R. Comparison of different noble metal-based screen-printed sensors for detection of PIK3CA point-mutations as biomarker for circulating tumor DNA. Electrochim Acta 2023. [DOI: 10.1016/j.electacta.2023.142336] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2023]
|
4
|
Park JH, Lee GY, Song Z, Bong JH, Kim HR, Kang MJ, Pyun JC. A vertically paired electrode for redox cycling and its application to immunoassays. Analyst 2023; 148:1349-1361. [PMID: 36857647 DOI: 10.1039/d2an01648f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
Abstract
An electrochemical immunoassay based on the redox cycling method was presented using vertically paired electrodes (VPEs), which were fabricated using poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) as an electrode material and parylene-C as a dielectric layer. For the application to immunoassays, different electrochemical properties of PEDOT:PSS were analyzed for the redox reaction of 3,3',5,5'-tetramethylbenzidine (TMB, the chromogenic substrate for enzyme-immunoassays) at different pH conditions, including the conductivity (σ), electron transfer rate constant (kapp), and double-layer capacitance (Cdl). The influencing factors on the sensitivity of redox cycling based on VPE based on PEDOT:PSS were analyzed for the redox reaction of TMB, such as the electrode gap and number of electrode pairs. Computer simulation was also performed for the redox cycling results based on VPEs, which had limitations in fabrication, such as VPEs with an electrode gap of less than 100 nm and more than five electrode pairs. Finally, the redox cycling based on VPE was applied to the medical diagnosis of human hepatitis-C virus (hHCV) using a commercial ELISA kit. The sensitivity of the redox cycling method for the medical diagnosis of hHCV was compared with conventional assay methods, such as TMB-based chromogenic detection, luminol-based chemiluminescence assay, and a rapid test kit (lateral flow immunoassay).
Collapse
Affiliation(s)
- Jun-Hee Park
- Department of Materials Science and Engineering, Yonsei University, 50 Yonsei-Ro, Seodaemun-Gu, Seoul 03722, Korea.
| | - Ga-Yeon Lee
- Department of Materials Science and Engineering, Yonsei University, 50 Yonsei-Ro, Seodaemun-Gu, Seoul 03722, Korea. .,Electronic Convergence Division, Korea Institute of Ceramic Engineering and Technology (KICET), Jinju, Korea
| | - Zhiquan Song
- Department of Materials Science and Engineering, Yonsei University, 50 Yonsei-Ro, Seodaemun-Gu, Seoul 03722, Korea.
| | - Ji-Hong Bong
- Department of Materials Science and Engineering, Yonsei University, 50 Yonsei-Ro, Seodaemun-Gu, Seoul 03722, Korea.
| | - Hong-Rae Kim
- Department of Materials Science and Engineering, Yonsei University, 50 Yonsei-Ro, Seodaemun-Gu, Seoul 03722, Korea.
| | - Min-Jung Kang
- Korea Institute of Science and Technology (KIST), Seoul, Korea
| | - Jae-Chul Pyun
- Department of Materials Science and Engineering, Yonsei University, 50 Yonsei-Ro, Seodaemun-Gu, Seoul 03722, Korea.
| |
Collapse
|
5
|
Karbelkar A, Ahlmark R, Zhou X, Austin K, Fan G, Yang VY, Furst A. Carbon Electrode-Based Biosensing Enabled by Biocompatible Surface Modification with DNA and Proteins. Bioconjug Chem 2023; 34:358-365. [PMID: 36633230 DOI: 10.1021/acs.bioconjchem.2c00542] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Modification of electrodes with biomolecules is an essential first step for the development of bioelectrochemical systems, which are used in a variety of applications ranging from sensors to fuel cells. Gold is often used because of its ease of modification with thiolated biomolecules, but carbon screen-printed electrodes (SPEs) are gaining popularity due to their low cost and fabrication from abundant resources. However, their effective modification with biomolecules remains a challenge; the majority of work to-date relies on nonspecific adhesion or broad amide bond formation to chemical handles on the electrode surface. By combining facile electrochemical modification to add an aniline handle to electrodes with a specific and biocompatible oxidative coupling reaction, we can readily modify carbon electrodes with a variety of biomolecules. Importantly, both proteins and DNA maintain bioactive conformations following coupling. We have then used biomolecule-modified electrodes to generate microbial monolayers through DNA-directed immobilization. This work provides an easy, general strategy to modify inexpensive carbon electrodes, significantly expanding their potential as bioelectrochemical systems.
Collapse
Affiliation(s)
- Amruta Karbelkar
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts02139, United States
| | - Rachel Ahlmark
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts02139, United States
| | - Xingcheng Zhou
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts02139, United States
| | - Katherine Austin
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts02139, United States
| | - Gang Fan
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts02139, United States
| | - Victoria Y Yang
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts02139, United States
| | - Ariel Furst
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts02139, United States.,Center for Environmental Health Sciences, Massachusetts Institute of Technology, Cambridge, Massachusetts02139, United States
| |
Collapse
|
6
|
Verrucchi M, Giacomazzo GE, Sfragano PS, Laschi S, Conti L, Pagliai M, Gellini C, Ricci M, Ravera E, Valtancoli B, Giorgi C, Palchetti I. Characterization of a Ruthenium(II) Complex in Singlet Oxygen-Mediated Photoelectrochemical Sensing. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:679-689. [PMID: 36574357 PMCID: PMC9835978 DOI: 10.1021/acs.langmuir.2c03042] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Revised: 12/13/2022] [Indexed: 06/17/2023]
Abstract
A water-soluble ruthenium(II) complex (L), capable of producing singlet oxygen (1O2) when irradiated with visible light, was used to modify the surface of an indium-tin oxide (ITO) electrode decorated with a nanostructured layer of TiO2 (TiO2/ITO). Singlet oxygen triggers the appearance of a cathodic photocurrent when the electrode is illuminated and biased at a proper reduction potential value. The L/TiO2/ITO electrode was first characterized with cyclic voltammetry, impedance spectroscopy, NMR, and Raman spectroscopy. The rate constant of singlet oxygen production was evaluated by spectrophotometric measurements. Taking advantage of the oxidative process initiated by 1O2, the analysis of phenolic compounds was accomplished. Particularly, the 1O2-driven oxidation of hydroquinone (HQ) produced quinone moieties, which could be reduced back at the electrode surface, biased at -0.3 V vs Ag/AgCl. Such a light-actuated redox cycle produced a photocurrent dependent on the concentration of HQ in solution, exhibiting a limit of detection (LOD) of 0.3 μmol dm-3. The L/TiO2/ITO platform was also evaluated for the analysis of p-aminophenol, a commonly used reagent in affinity sensing based on alkaline phosphatase.
Collapse
Affiliation(s)
- Margherita Verrucchi
- Dipartimento
di Chimica Ugo Schiff, Università
degli Studi di Firenze, Via della Lastruccia 3, 50019 Sesto Fiorentino (FI), Italy
| | - Gina Elena Giacomazzo
- Dipartimento
di Chimica Ugo Schiff, Università
degli Studi di Firenze, Via della Lastruccia 3, 50019 Sesto Fiorentino (FI), Italy
| | - Patrick Severin Sfragano
- Dipartimento
di Chimica Ugo Schiff, Università
degli Studi di Firenze, Via della Lastruccia 3, 50019 Sesto Fiorentino (FI), Italy
| | - Serena Laschi
- Dipartimento
di Chimica Ugo Schiff, Università
degli Studi di Firenze, Via della Lastruccia 3, 50019 Sesto Fiorentino (FI), Italy
| | - Luca Conti
- Dipartimento
di Chimica Ugo Schiff, Università
degli Studi di Firenze, Via della Lastruccia 3, 50019 Sesto Fiorentino (FI), Italy
| | - Marco Pagliai
- Dipartimento
di Chimica Ugo Schiff, Università
degli Studi di Firenze, Via della Lastruccia 3, 50019 Sesto Fiorentino (FI), Italy
| | - Cristina Gellini
- Dipartimento
di Chimica Ugo Schiff, Università
degli Studi di Firenze, Via della Lastruccia 3, 50019 Sesto Fiorentino (FI), Italy
| | - Marilena Ricci
- Dipartimento
di Chimica Ugo Schiff, Università
degli Studi di Firenze, Via della Lastruccia 3, 50019 Sesto Fiorentino (FI), Italy
| | - Enrico Ravera
- Dipartimento
di Chimica Ugo Schiff, Università
degli Studi di Firenze, Via della Lastruccia 3, 50019 Sesto Fiorentino (FI), Italy
- CERM, Università degli Studi di
Firenze, Via Luigi Sacconi
6, 50019 Sesto Fiorentino
(FI), Italy
- CIRMMP, Via Luigi Sacconi 6, 50019 Sesto Fiorentino (FI), Italy
| | - Barbara Valtancoli
- Dipartimento
di Chimica Ugo Schiff, Università
degli Studi di Firenze, Via della Lastruccia 3, 50019 Sesto Fiorentino (FI), Italy
| | - Claudia Giorgi
- Dipartimento
di Chimica Ugo Schiff, Università
degli Studi di Firenze, Via della Lastruccia 3, 50019 Sesto Fiorentino (FI), Italy
| | - Ilaria Palchetti
- Dipartimento
di Chimica Ugo Schiff, Università
degli Studi di Firenze, Via della Lastruccia 3, 50019 Sesto Fiorentino (FI), Italy
| |
Collapse
|
7
|
Kanapathy S, Obande GA, Chuah C, Shueb RH, Yean CY, Banga Singh KK. Sequence-Specific Electrochemical Genosensor for Rapid Detection of blaOXA-51-like Gene in Acinetobacter baumannii. Microorganisms 2022; 10:1413. [PMID: 35889132 PMCID: PMC9322073 DOI: 10.3390/microorganisms10071413] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Revised: 07/04/2022] [Accepted: 07/07/2022] [Indexed: 11/26/2022] Open
Abstract
Acinetobacter baumannii (A. baumannii) are phenotypically indistinguishable from the Acinetobacter calcoaceticus−A. baumannii (ACB) complex members using routine laboratory methods. Early diagnosis plays an important role in controlling A. baumannii infections and this could be assisted by the development of a rapid, yet sensitive diagnostic test. In this study, we developed an enzyme-based electrochemical genosensor for asymmetric PCR (aPCR) amplicon detection of the blaOXA-51-like gene in A. baumannii. A. baumanniiblaOXA-51-like gene PCR primers were designed, having the reverse primer modified at the 5′ end with FAM. A blaOXA-51-like gene sequence-specific biotin labelled capture probe was designed and immobilized using a synthetic oligomer (FAM-labelled) deposited on the working electrode of a streptavidin-modified, screen-printed carbon electrode (SPCE). The zot gene was used as an internal control with biotin and FAM labelled as forward and reverse primers, respectively. The blaOXA-51-like gene was amplified using asymmetric PCR (aPCR) to generate single-stranded amplicons that were detected using the designed SPCE. The amperometric current response was detected with a peroxidase-conjugated, anti-fluorescein antibody. The assay was tested using reference and clinical A. baumannii strains and other nosocomial bacteria. The analytical sensitivity of the assay at the genomic level and bacterial cell level was 0.5 pg/mL (1.443 µA) and 103 CFU/mL, respectively. The assay was 100% specific and sensitive for A. baumannii. Based on accelerated stability performance, the developed genosensor was stable for 1.6 years when stored at 4 °C and up to 28 days at >25 °C. The developed electrochemical genosensor is specific and sensitive and could be useful for rapid, accurate diagnosis of A. baumannii infections even in temperate regions.
Collapse
Affiliation(s)
- Swarnaletchumi Kanapathy
- Department of Medical Microbiology & Parasitology, School of Medical Sciences, Universiti Sains Malaysia, Health Campus, Kubang Kerian 16150, Kelantan, Malaysia; (S.K.); (C.C.); (R.H.S.); (C.Y.Y.)
| | - Godwin Attah Obande
- Department of Microbiology, Faculty of Science, Federal University of Lafia, Lafia 950101, Nasarawa State, Nigeria;
| | - Candy Chuah
- Department of Medical Microbiology & Parasitology, School of Medical Sciences, Universiti Sains Malaysia, Health Campus, Kubang Kerian 16150, Kelantan, Malaysia; (S.K.); (C.C.); (R.H.S.); (C.Y.Y.)
- Faculty of Health Sciences, Universiti Teknologi MARA, Kampus Bertam, Kepala Batas 13200, Penang, Malaysia
| | - Rafidah Hanim Shueb
- Department of Medical Microbiology & Parasitology, School of Medical Sciences, Universiti Sains Malaysia, Health Campus, Kubang Kerian 16150, Kelantan, Malaysia; (S.K.); (C.C.); (R.H.S.); (C.Y.Y.)
| | - Chan Yean Yean
- Department of Medical Microbiology & Parasitology, School of Medical Sciences, Universiti Sains Malaysia, Health Campus, Kubang Kerian 16150, Kelantan, Malaysia; (S.K.); (C.C.); (R.H.S.); (C.Y.Y.)
| | - Kirnpal Kaur Banga Singh
- Department of Medical Microbiology & Parasitology, School of Medical Sciences, Universiti Sains Malaysia, Health Campus, Kubang Kerian 16150, Kelantan, Malaysia; (S.K.); (C.C.); (R.H.S.); (C.Y.Y.)
| |
Collapse
|
8
|
Call ZD, Jang I, Geiss BJ, Dandy DS, Henry CS. Progress toward a Simplified UTI Diagnostic: Pump-Free Magnetophoresis for E. coli Detection. Anal Chem 2022; 94:7545-7550. [PMID: 35588209 DOI: 10.1021/acs.analchem.2c00316] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Urinary tract infections (UTIs) are one of the most common infections across the world and can lead to serious complications such as sepsis if not treated in a timely manner. Uropathogenic Escherichia coli account for 75% of all UTIs. Early diagnosis is crucial to help control UTIs, but current culturing methods are expensive and time-consuming and lack sensitivity. The existing point-of-care methods fall short because they rely on indirect detection from elevated nitrates in urine rather than detecting the actual bacteria causing the infection. Magnetophoresis is a powerful method used to separate and/or isolate cells of interest from complex matrices for analysis. However, magnetophoresis typically requires complex and expensive instrumentation to control flow in microfluidic devices. Coupling magnetophoresis with microfluidic paper-based analytical devices (μPADs) enables pump-free flow control and simple and low-cost operation. Early magnetophoresis μPADs showed detection limits competitive with traditional methods but higher than targets for clinical use. Here, we demonstrate magnetophoresis using hybrid μPADs that rely on capillary action in hydrophilic polyethylene terephthalate channels combined with paper pumps. We were able to detect E. coli with a calculated limit of detection of 2.40 × 102 colony-forming units per mL.
Collapse
Affiliation(s)
- Zachary D Call
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523, United States
| | - Ilhoon Jang
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523, United States.,Institute of Nano Science and Technology, Hanyang University, Seoul 04763, Korea
| | - Brian J Geiss
- School of Biomedical Engineering, Colorado State University, Fort Collins, Colorado 80523, United States.,Department of Microbiology, Immunology, and Pathology, Colorado State University, Fort Collins, Colorado 80523, United States
| | - David S Dandy
- Department of Chemical and Biological Engineering, Colorado State University, Fort Collins, Colorado 80523 United States.,School of Biomedical Engineering, Colorado State University, Fort Collins, Colorado 80523, United States
| | - Charles S Henry
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523, United States.,Department of Chemical and Biological Engineering, Colorado State University, Fort Collins, Colorado 80523 United States.,School of Biomedical Engineering, Colorado State University, Fort Collins, Colorado 80523, United States
| |
Collapse
|
9
|
Altuner EE, Ozalp VC, Yilmaz MD, Bekmezci M, Sen F. High-efficiency application of CTS-Co NPs mimicking peroxidase enzyme on TMB(ox). CHEMOSPHERE 2022; 292:133429. [PMID: 34973252 DOI: 10.1016/j.chemosphere.2021.133429] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Revised: 12/16/2021] [Accepted: 12/22/2021] [Indexed: 06/14/2023]
Abstract
In this study, analytical studies of Chitosan-Cobalt(II) (CTS-Co(II)) nanoparticles (CTS - Co NPs) by mimicking horseradish peroxidase (HRP) were evaluated. In the applications, it was observed that CTS-Co NPs 3,3' 5,5' tetramethylbenzidine (TMB) oxidized in the presence of hydrogen peroxide (H2O2). The required CTS-Co NPs were synthesized at 50 °C in 30 min and characterized using Fourier transform infrared spectroscopy (FTIR), thermal gravimetric analysis (TGA), inductively coupled plasma-optical emission spectroscopy (ICP-OES), and X-ray photon spectroscopy (XPS) was done. CTS-Co NPs were studied to develop a selective TMB biosensor on TMB(ox) substrate. The synthesized CTS-Co NPs formed a catalytic reaction with 30% 0.2 mM H2O2 on 0.2 M TMB substrate. After the catalytic reaction, sensitive signals were obtained from the desired biosensor. Electrochemical measurements were taken as low limit of 10 mg and a high limit of 20 mg for the determination of CTS-Co NPs to TMB(ox). In the microplate study; The sensors were applied on 1.5 μg and 3 μg CTS-Co NPs TMB(ox) substrate, respectively. CTS- Co NPs; for TMB(ox) determination, optical density (OD) measurement was taken as a low limit of 1.5 μg and a high limit of 3 μg. Electrochemical applications of particles and microplate reader results were compared with horseradish peroxidase (HRP) enzyme for sensor properties. According to the data obtained, it was observed that it behaved similarly to the CTS-Co NPs peroxidase enzyme. This work presents innovations for nanoparticle extraction and sensor study from chitosan and other naturally sourced polymers.
Collapse
Affiliation(s)
- Elif Esra Altuner
- Sen Research Group, Department of Biochemistry, Dumlupinar University, 43000, Kutahya, Turkey.
| | - Veli Cengiz Ozalp
- Medical School, Department of Medical Biology, Atilim University, 06830, Ankara, Turkey.
| | - M Deniz Yilmaz
- Department of Bioengineering, Faculty of Engineering and Architecture, Konya Food and Agriculture University, 42080, Konya, Turkey
| | - Muhammed Bekmezci
- Sen Research Group, Department of Biochemistry, Dumlupinar University, 43000, Kutahya, Turkey; Department of Materials Science and Engineering, Faculty of Engineering, Dumlupinar University, Kutahya, Turkey
| | - Fatih Sen
- Sen Research Group, Department of Biochemistry, Dumlupinar University, 43000, Kutahya, Turkey.
| |
Collapse
|
10
|
Niu X, Wang M, Zhu H, Liu P, Pan J, Liu B. Nanozyme catalysis-assisted ratiometric multicolor sensing of heparin based on target-specific electrostatic-induced aggregation. Talanta 2022; 238:123003. [PMID: 34857337 DOI: 10.1016/j.talanta.2021.123003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2021] [Revised: 10/09/2021] [Accepted: 10/26/2021] [Indexed: 10/20/2022]
Abstract
Monitoring the level of heparin in clinical matrices is significant because of its pivotal role in preventing thrombosis. Compared to traditional single-signal sensors, multi-signal ratiometric detection can provide anti-interference results especially in complicated environments. However, fabricating an easy-to-operation, low-cost and robust sensor for the ratiometric detection of heparin still remains challenging. Here we propose a novel nanosensor for the ratiometric multicolor sensing of heparin with high performance. The sensor is based on the specific electrostatic interaction between the target and a positively charged species generated from nanozyme catalysis. FeMoO4 nanorods are explored as an oxidase mimic for the first time, showing a high activity at neutral pH to catalyze the colorless 3,3',5,5'-tetramethylbenzidine (TMB) oxidation to blue TMBox with an absorbance at 652 nm. Heparin can induce the rapid aggregation of the produced TMBox intermediate with rich positive charges due to their strong electrostatic interaction, leading to the formation of a purple Heparin-TMBox complex providing a signal at 565 nm. With the increase of heparin, the color changes from blue to indigo and further purple, enabling the multicolor sensing of the target. As a result, ultrasensitive determination of heparin was obtained with a very low detection limit. The fabricated nanosensor could differentiate heparin from complex species with no interferences, and it provided reliable analytical results for heparin in both serum and plasma. With robust performance, low cost and facile fabrication, the sensor holds great potential in monitoring heparin for clinical applications.
Collapse
Affiliation(s)
- Xiangheng Niu
- Institute of Green Chemistry and Chemical Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013, China; Key Laboratory of Functional Molecular Solids of Ministry of Education, Anhui Normal University, Wuhu, 241002, China; State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, 150090, China.
| | - Mengzhu Wang
- Institute of Green Chemistry and Chemical Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013, China
| | - Hengjia Zhu
- Institute of Green Chemistry and Chemical Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013, China
| | - Peng Liu
- Institute of Green Chemistry and Chemical Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013, China
| | - Jianming Pan
- Institute of Green Chemistry and Chemical Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013, China
| | - Bangxiang Liu
- Institute of Green Chemistry and Chemical Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013, China
| |
Collapse
|
11
|
Nitrogen-doped carbon dots/Ni-MnFe-layered double hydroxides (N-CDs/Ni-MnFe-LDHs) hybrid nanomaterials as immunoassay label for low-density lipoprotein detection. Mikrochim Acta 2022; 189:72. [PMID: 35075569 DOI: 10.1007/s00604-022-05173-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Accepted: 01/03/2022] [Indexed: 02/01/2023]
Abstract
Nitrogen-doped carbon dots/Ni-MnFe-layered double hydroxides (N-CDs/Ni-MnFe-LDHs) are demonstrated as superior peroxidase mimic antibody labels alternative to horseradish peroxidase (HRP) in an immunoassay, potentially overcoming some of the inherent disadvantages of HRP and other enzyme mimicking nanomaterials. They revealed efficient peroxidase-like activity and catalyzed the oxidation of colorless 3,3',5,5'-tetramethylbenzidine (TMB) to form the intense blue product (at 620 nm) in the presence of hydrogen peroxide (H2O2). Using low-density lipoprotein (LDL) as a model target, an ultra-low limit of detection (0.0051 mg/dL) and a linear range of 0.0625-0.750 mg/dL were achieved, exhibiting higher sensitivity than the HRP-based immunoassay. Thus, the proposed N-CDs/Ni-MnFe-LDHs can be used as HRP mimicking analogs for developing highly sensitive colorimetric immunosensors for detection of biomarkers, as well as trace chemical analysis.
Collapse
|
12
|
Joe C, Lee BH, Kim SH, Ko Y, Gu MB. Aptamer duo-based portable electrochemical biosensors for early diagnosis of periodontal disease. Biosens Bioelectron 2021; 199:113884. [PMID: 34942544 DOI: 10.1016/j.bios.2021.113884] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Revised: 12/06/2021] [Accepted: 12/09/2021] [Indexed: 01/25/2023]
Abstract
Recently, point-of-care tests (POCT) have gained much attention due to their convenient, fast, simple, and easy characteristics. For POCT, portability is an essential feature. In this study, we have successfully fabricated a portable mini-potentiostat. Using chronoamperometry, electrical signals of this portable mini-potentiostat were measured, and the analytical performance of electrochemical aptasensors was compared with a benchtop potentiostat. The electrochemical signals measured by mini-potentiostat can be displayed on the screen of a smartphone. To verify the analytical performance of this portable electrochemical aptasensor platform with a mini-potentiostat, two well-known model protein biomarkers, vaspin, a type 2 diabetes biomarker, and thrombin, a biomarker for pulmonary metastasis and cardiovascular disease, were confirmed to be detected by using corresponding aptamer duo. After solid verification of this portable electrochemical aptasensor platform, we have successfully implemented this portable mini-potentiostat system to develop a portable sandwich-type binding pair of aptamers-based electrochemical biosensor, which can diagnose periodontal disease by measuring ODAM biomarker. The linear range of this ODAM biosensor was 0 to 15 nM with a detection limit of 0.02 nM and 1 nM in buffer and saliva, respectively. The sensitivity of this biosensor has been greatly enhanced, compared to previously developed surface plasmon resonance (SPR) or lateral flow assay (LFA) based aptasensors. This study showed that this new portable aptamer duo-based biosensor is expected to diagnose the early stage of periodontal diseases from real samples, such as saliva or gingival crevicular fluid in a short time as a point-of-care (POC) testing.
Collapse
Affiliation(s)
- Cheulmin Joe
- Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Anam-dong, Seongbuk-gu, Seoul, 02841, Republic of Korea
| | - Bang Hyun Lee
- Department of Electrical & Computer Engineering, North Carolina State University, 890 Oval Dr, Raleigh, NC, 27695, USA
| | - Sang Hoon Kim
- University of North Carolina -- Chapel Hill, Department of Applied Physical Sciences, 1112 Murray Hall, CB#3050, Chapel Hill, NC, 27599-2100, USA
| | - Youngkyung Ko
- Department of Periodontics, Seoul St Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Man Bock Gu
- Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Anam-dong, Seongbuk-gu, Seoul, 02841, Republic of Korea.
| |
Collapse
|
13
|
Umer M, Aziz NB, Mahmudunnabi RG, Shim YB, Salomon C, Shiddiky MJA. A novel DNA binding protein-based platform for electrochemical detection of miRNA. Analyst 2021; 146:5496-5501. [PMID: 34346412 DOI: 10.1039/d1an00935d] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We present a novel amplification-free sandwich type platform assay for electrochemical detection of miRNA. The assay is based on T4 DNA polymerase mediated synthesis of the p53 binding DNA sequence at the 3' end of target miRNA. The resulting miRNA-DNA chimera is detected via an electrochemical sandwich hybridization assay where HRP-labelled p53 binds to its recognition sequence and an amperometric signal is generated by hydroquinone-mediated enzymatic reduction of H2O2. The limit of detection of our assay was estimated to be 22 fM with a linear dynamic range of 100 fM-1 nM. This new platform method of detecting miRNA shows superior performance to conventional electrochemical miRNA biosensors and has the potential for amplification-free analysis of miRNA with high specificity and sensitivity.
Collapse
Affiliation(s)
- Muhammad Umer
- Queensland Micro- and Nanotechnology Centre (QMNC), Griffith University, Nathan, QLD 4111, Australia.
| | - Nahian B Aziz
- Exosome Biology Laboratory, Centre for Clinical Diagnostics, University of Queensland Centre for Clinical Research, Royal Brisbane and Women's Hospital, The University of Queensland, Brisbane, Australia
| | - Rabbee G Mahmudunnabi
- Department of Chemistry and Institute of BioPhysio Sensor Technology, Pusan National University, Busan 46241, South Korea
| | - Yoon-Bo Shim
- Department of Chemistry and Institute of BioPhysio Sensor Technology, Pusan National University, Busan 46241, South Korea
| | - Carlos Salomon
- Exosome Biology Laboratory, Centre for Clinical Diagnostics, University of Queensland Centre for Clinical Research, Royal Brisbane and Women's Hospital, The University of Queensland, Brisbane, Australia
| | - Muhammad J A Shiddiky
- Queensland Micro- and Nanotechnology Centre (QMNC), Griffith University, Nathan, QLD 4111, Australia. and School of Environment and Science, Griffith University, QLD 4111, Australia
| |
Collapse
|
14
|
Höfs S, Hülagü D, Bennet F, Carl P, Flemig S, Schmid T, Schenk JA, Hodoroaba V, Schneider RJ. Electrochemical Immunomagnetic Ochratoxin A Sensing: Steps Forward in the Application of 3,3’,5,5’‐Tetramethylbenzidine in Amperometric Assays. ChemElectroChem 2021. [DOI: 10.1002/celc.202100446] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Soraya Höfs
- Department of Analytical Chemistry Reference Materials Bundesanstalt für Materialforschung und -prüfung (BAM) Richard-Willstätter-Straße 11 12489 Berlin Germany
- Institute for Biochemistry and Biology University of Potsdam OT-Golm, Karl-Liebknecht-Straße 24–25 14476 Potsdam Germany
| | - Deniz Hülagü
- Department of Materials Chemistry Bundesanstalt für Materialforschung und -prüfung (BAM) Unter den Eichen 44–46 12203 Berlin Germany
| | - Francesca Bennet
- Department of Materials Chemistry Bundesanstalt für Materialforschung und -prüfung (BAM) Unter den Eichen 44–46 12203 Berlin Germany
| | - Peter Carl
- Department of Analytical Chemistry Reference Materials Bundesanstalt für Materialforschung und -prüfung (BAM) Richard-Willstätter-Straße 11 12489 Berlin Germany
| | - Sabine Flemig
- Department of Analytical Chemistry Reference Materials Bundesanstalt für Materialforschung und -prüfung (BAM) Richard-Willstätter-Straße 11 12489 Berlin Germany
| | - Thomas Schmid
- Department of Analytical Chemistry Reference Materials Bundesanstalt für Materialforschung und -prüfung (BAM) Richard-Willstätter-Straße 11 12489 Berlin Germany
- School of Analytical Sciences Adlershof (SALSA) Humboldt-Universität zu Berlin Unter den Linden 6 10099 Berlin Germany
| | | | - Vasile‐Dan Hodoroaba
- Department of Materials Chemistry Bundesanstalt für Materialforschung und -prüfung (BAM) Unter den Eichen 44–46 12203 Berlin Germany
| | - Rudolf J. Schneider
- Department of Analytical Chemistry Reference Materials Bundesanstalt für Materialforschung und -prüfung (BAM) Richard-Willstätter-Straße 11 12489 Berlin Germany
- Technische Universität Berlin Straße des 17. Juni 135 10623 Berlin Germany
| |
Collapse
|
15
|
Nsabimana J, Wang Y, Ruan Q, Li T, Shen H, Yang C, Zhu Z. An electrochemical method for a rapid and sensitive immunoassay on digital microfluidics with integrated indium tin oxide electrodes coated on a PET film. Analyst 2021; 146:4473-4479. [PMID: 34227625 DOI: 10.1039/d1an00513h] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Electrochemical detection is the simplest analytical tool to be integrated into digital microfluidics (DMF). It offers the advantages of small size, with detector electrodes incorporated into the device by patterning, and high compatibility with portable analytical instruments. Indium tin oxide (ITO) coated on glass has been commonly used for the top plate of DMF due to its good conductivity and transparency. However, instability and the low current response of ITO electrodes patterned on glass hindered their application for immunoassays. It has been reported that ITO coated on polyethylene terephthalate (PET) has better conductivity, owing to its higher carrier concentration, faster mobility and lower resistivity. Herein, we investigated the use of ITO electrodes patterned on PET film as the top plate of DMF for a simple and stable electrochemical immunoassay using square wave voltammetry (SWV), with an excellent peak resolution and high sensitivity. A magnetic bead-based immunoassay for H5N1 antigen was performed on a DMF platform with a limit of detection of 0.6 ng mL-1 in buffer and 18 ng mL-1 in human serum. These results showed the good electrochemical performance of ITO coated on a PET film, a lightweight, shock resistant and cost-effective material, which is promising for DMF fabrication and transparent electrodes for various electroanalytical methods.
Collapse
Affiliation(s)
- Jacques Nsabimana
- The MOE Key Laboratory of Spectrochemical Analysis & Instrumentation, The key Laboratory of Chemical Biology of Fujian Province, State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemical Biology, College of Chemistry and Chemical Engineering, Pen-Tung Sah Institute of Micro-Nano Science and Technology, Xiamen University, Xiamen 361005, P.R. China.
| | - Yang Wang
- The MOE Key Laboratory of Spectrochemical Analysis & Instrumentation, The key Laboratory of Chemical Biology of Fujian Province, State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemical Biology, College of Chemistry and Chemical Engineering, Pen-Tung Sah Institute of Micro-Nano Science and Technology, Xiamen University, Xiamen 361005, P.R. China.
| | - Qingyu Ruan
- The MOE Key Laboratory of Spectrochemical Analysis & Instrumentation, The key Laboratory of Chemical Biology of Fujian Province, State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemical Biology, College of Chemistry and Chemical Engineering, Pen-Tung Sah Institute of Micro-Nano Science and Technology, Xiamen University, Xiamen 361005, P.R. China.
| | - Tingyu Li
- The MOE Key Laboratory of Spectrochemical Analysis & Instrumentation, The key Laboratory of Chemical Biology of Fujian Province, State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemical Biology, College of Chemistry and Chemical Engineering, Pen-Tung Sah Institute of Micro-Nano Science and Technology, Xiamen University, Xiamen 361005, P.R. China.
| | - Haicong Shen
- The MOE Key Laboratory of Spectrochemical Analysis & Instrumentation, The key Laboratory of Chemical Biology of Fujian Province, State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemical Biology, College of Chemistry and Chemical Engineering, Pen-Tung Sah Institute of Micro-Nano Science and Technology, Xiamen University, Xiamen 361005, P.R. China.
| | - Chaoyong Yang
- The MOE Key Laboratory of Spectrochemical Analysis & Instrumentation, The key Laboratory of Chemical Biology of Fujian Province, State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemical Biology, College of Chemistry and Chemical Engineering, Pen-Tung Sah Institute of Micro-Nano Science and Technology, Xiamen University, Xiamen 361005, P.R. China. and Institute of Molecular Medicine, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200127, P.R. China
| | - Zhi Zhu
- The MOE Key Laboratory of Spectrochemical Analysis & Instrumentation, The key Laboratory of Chemical Biology of Fujian Province, State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemical Biology, College of Chemistry and Chemical Engineering, Pen-Tung Sah Institute of Micro-Nano Science and Technology, Xiamen University, Xiamen 361005, P.R. China.
| |
Collapse
|
16
|
Armstrong CM, Lee J, Gehring AG, Capobianco JA. Flow-Through Electrochemical Biosensor for the Detection of Listeria monocytogenes Using Oligonucleotides. SENSORS 2021; 21:s21113754. [PMID: 34071528 PMCID: PMC8198859 DOI: 10.3390/s21113754] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Revised: 05/18/2021] [Accepted: 05/24/2021] [Indexed: 11/29/2022]
Abstract
Consumption of food contaminated by Listeria monocytogenes can result in Listeriosis, an illness with hospitalization rates of 94% and mortality rates up to 30%. As a result, U.S. regulatory agencies governing food safety retain zero-tolerance policies for L. monocytogenes. However, detection at such low concentrations often requires strategies such as increasing sample size or culture enrichment. A novel flow-through immunoelectrochemical biosensor has been developed for Escherichia coli O157:H7 detection in 1 L volumes without enrichment. The current work further augments this biosensor’s capabilities to (1) include detection of L. monocytogenes and (2) accommodate genetic detection to help overcome limitations based upon antibody availability and address specificity errors in phenotypic assays. Herein, the conjugation scheme for oligo attachment and the conditions necessary for genetic detection are laid forth while results of the present study demonstrate the sensor’s ability to distinguish L. monocytogenes DNA from L. innocua with a limit of detection of ~2 × 104 cells/mL, which agrees with prior studies. Total time for this assay can be constrained to <2.5 h because a timely culture enrichment period is not necessary. Furthermore, the electrochemical detection assay can be performed with hand-held electronics, allowing this platform to be adopted for near-line monitoring systems.
Collapse
|
17
|
Ye K, Zhang M, Liu P, Liu B, Xu X, Li X, Zhu H, Wang L, Wang M, Niu X. Target-induced synergetic modulation of electrochemical tag concentration and electrode surface passivation for one-step sampling filtration-free detection of acid phosphatase activity. Talanta 2021; 233:122500. [PMID: 34215117 DOI: 10.1016/j.talanta.2021.122500] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Revised: 04/29/2021] [Accepted: 05/03/2021] [Indexed: 12/12/2022]
Abstract
As a biomarker of several diseases, the activity of acid phosphatase (ACP) is generally used to assistantly diagnose these diseases. Thus, developing reliable ACP activity analytical methods becomes quite significant. Herein, we recommend a one-step sampling filtration-free electrochemical method for ACP activity determination based on the target-induced synergetic modulation of tag concentration and surface passivation. Mn3O4 microspheres with favorable oxidase-mimicking activity are synthesized to catalyze the oxidation of 3,3',5,5'-tetramethylbenzidine (TMB) to its product TMBox, resulting in a remarkable re-reduction signal of TMBox to TMB recorded by an integrated electrochemical system consisting of screen-printed electrode (SPE) and 3D-printed holder. When hexametaphosphate ions (HMPi) with rich negative charges are employed to interact positively charged TMBox, the formed flocculent precipitate TMBox-HMPi automatically sedimentates onto SPE surface, and both the decreased concentration of free TMBox in solution and the increased electrode surface passivation triggered by TMBox-HMPi sedimentation synergistically reduce the re-reduction signal of TMBox. When ACP is present, it hydrolyzes the HMPi substrate, greatly relieving the formation of the TMBox-HMPi precipitate and its sedimentation onto SPE surface. As a result, the electrochemical re-reduction signal of TMBox becomes remarkable again. With the strategy of using one stimulus to generate two-fold signal change, highly sensitive ACP activity detection was realized, with a wide linear range from 0.05 to 50 U/L and a limit of detection down to 0.024 U/L. Reliable monitoring of ACP activity in clinical serum was also demonstrated.
Collapse
Affiliation(s)
- Kun Ye
- Institute of Green Chemistry and Chemical Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013, China
| | - Mingliang Zhang
- Institute of Green Chemistry and Chemical Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013, China
| | - Peng Liu
- Institute of Green Chemistry and Chemical Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013, China
| | - Bangxiang Liu
- Institute of Green Chemistry and Chemical Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013, China
| | - Xuechao Xu
- Institute of Green Chemistry and Chemical Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013, China; School of Food and Biological Engineering, Jiangsu University, Zhenjiang, 212013, China
| | - Xin Li
- Institute of Green Chemistry and Chemical Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013, China; School of Environment and Safety Engineering, Jiangsu University, Zhenjiang, 212013, China
| | - Hengjia Zhu
- Institute of Green Chemistry and Chemical Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013, China; School of Agricultural Engineering, Jiangsu University, Zhenjiang, 212013, China
| | - Linjie Wang
- Institute of Green Chemistry and Chemical Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013, China
| | - Mengzhu Wang
- Institute of Green Chemistry and Chemical Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013, China
| | - Xiangheng Niu
- Institute of Green Chemistry and Chemical Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013, China.
| |
Collapse
|
18
|
Ikenoue Y, Tahara YO, Miyata M, Nishioka T, Aono S, Nakajima H. Use of a Ferritin L134P Mutant for the Facile Conjugation of Prussian Blue in the Apoferritin Cavity. Inorg Chem 2021; 60:4693-4704. [PMID: 33733771 DOI: 10.1021/acs.inorgchem.0c03660] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Since the bullfrog H-ferritin L134P mutant in which leucine 134 is replaced with proline was found to exhibit a flexible conformation in the C3 axis channel, homologous ferritins with the corresponding mutation have often been studied in terms of a mechanism of iron release from the mineral core within the protein cavity. Meanwhile, a ferritin mutant with the flexible channel is an attractive material in developing a method to encapsulate functional molecules larger than mononuclear ions into the protein cavity. This study describes the clathrate with a horse spleen L-ferritin L134P mutant containing Prussian blue (PB) without a frequently used technique, disassembly and reassembly of the protein subunits. The spherical shell of ferritin was confirmed in a TEM image of the clathrate. The produced clathrate (PB@L134P) was soluble in water and reproduced the spectroscopic and electrochemical properties of PB prepared using the conventional method. The catalytic activity for an oxidoreductive reaction with H2O2, one of the major applications of conventional PB, was also observed for the clathrate. The instability of PB in alkaline solutions, limiting its wide applications in aqueous media, was significantly improved in PB@L134P, showing the protective effect of the protein shell. The method developed here shows that horse spleen L-ferritin L134P is a useful scaffold to produce clathrates of three-dimensional complexes with ferritin.
Collapse
Affiliation(s)
- Yuta Ikenoue
- Division of Molecular Materials Science, Graduate School of Science, Osaka City University, 3-3-138 Sugimoto, Sumiyoshi-ku, Osaka 558-8585, Japan
| | - Yuhei O Tahara
- Division of Biology & Geosciences, Graduate School of Science, Osaka City University, 3-3-138 Sugimoto, Sumiyoshi-ku, Osaka 558-8585, Japan.,The OCU Advanced Research Institute for Natural Science and Technology (OCARINA), Osaka City University, 3-3-138 Sugimoto, Sumiyoshi-ku, Osaka 558-8585, Japan
| | - Makoto Miyata
- Division of Biology & Geosciences, Graduate School of Science, Osaka City University, 3-3-138 Sugimoto, Sumiyoshi-ku, Osaka 558-8585, Japan.,The OCU Advanced Research Institute for Natural Science and Technology (OCARINA), Osaka City University, 3-3-138 Sugimoto, Sumiyoshi-ku, Osaka 558-8585, Japan
| | - Takanori Nishioka
- Division of Molecular Materials Science, Graduate School of Science, Osaka City University, 3-3-138 Sugimoto, Sumiyoshi-ku, Osaka 558-8585, Japan
| | - Shigetoshi Aono
- Department of Creative Research, Exploratory Research Center on Life and Living Systems (ExCELLS), National Institutes of Natural Sciences, 5-1 Higashiyama, Myodaiji-cho, Okazaki 444-8787, Japan.,Institute for Molecular Science, National Institutes of Natural Sciences, 5-1 Higashiyama, Myodaiji-cho, Okazaki 444-8787, Japan
| | - Hiroshi Nakajima
- Division of Molecular Materials Science, Graduate School of Science, Osaka City University, 3-3-138 Sugimoto, Sumiyoshi-ku, Osaka 558-8585, Japan
| |
Collapse
|
19
|
Zozulia O, Marshall LR, Kim I, Kohn EM, Korendovych IV. Self-Assembling Catalytic Peptide Nanomaterials Capable of Highly Efficient Peroxidase Activity. Chemistry 2021; 27:5388-5392. [PMID: 33460473 PMCID: PMC8208039 DOI: 10.1002/chem.202100182] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2021] [Indexed: 12/13/2022]
Abstract
The self-assembly of short peptides gives rise to versatile nanomaterials capable of promoting efficient catalysis. We have shown that short, seven-residue peptides bind hemin to produce functional catalytic materials which display highly efficient peroxidation activity, reaching a catalytic efficiency of 3×105 m-1 s-1 . Self-assembly is essential for catalysis as non-assembling controls show no activity. We have also observed peroxidase activity even in the absence of hemin, suggesting the potential to alter redox properties of substrates upon association with the assemblies. These results demonstrate the practical utility of self-assembled peptides in various catalytic applications and further support the evolutionary link between amyloids and modern-day enzymes.
Collapse
Affiliation(s)
- Oleksii Zozulia
- Department of Chemistry, Syracuse University, 111 College Place, Syracuse, NY 13244 (USA)
| | - Liam R. Marshall
- Department of Chemistry, Syracuse University, 111 College Place, Syracuse, NY 13244 (USA)
| | - Inhye Kim
- Department of Chemistry, Syracuse University, 111 College Place, Syracuse, NY 13244 (USA)
| | - Eric M. Kohn
- Department of Chemistry, Syracuse University, 111 College Place, Syracuse, NY 13244 (USA)
| | - Ivan V. Korendovych
- Department of Chemistry, Syracuse University, 111 College Place, Syracuse, NY 13244 (USA)
| |
Collapse
|
20
|
Liu J, Liu F, Ding C, Ma F, Yu H, Shi Y, Zhang X. Response of Trametes hirsuta to hexavalent chromium promotes laccase-mediated decolorization of reactive black 5. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2020; 205:111134. [PMID: 32829208 DOI: 10.1016/j.ecoenv.2020.111134] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Revised: 08/03/2020] [Accepted: 08/04/2020] [Indexed: 06/11/2023]
Abstract
The recalcitrant azo dyes combined with heavy metals constitute a major challenge for the bioremediation of industrial effluents. This study aimed to investigate the effect and mechanism of action of a white-rot fungus Trametes hirsuta TH315 on the simultaneous removal of hexavalent chromium [Cr(VI)] and azo dye (Reactive Black 5, RB5). Here, this study discovered that toxic Cr(VI) (1 mM) greatly promoted RB5 decolorization (from 57.15% to 83.65%) by white-rot fungus Trametes hirsuta with high Cr(VI)-reducing ability (>96%), resulting in the simultaneous removal of co-contaminants. On the basis of transcriptomic and biochemical analysis, our study revealed that the oxidative stress in co-contaminants mainly caused by Cr(VI), and a number of dehydrogenases and oxidases showed up-regulation in response to Cr(VI) stress. It was noteworthy that the oxidative stress caused by Cr(VI) in co-contaminants can both significantly induce glutathione S-transferase and laccase expression. Glutathione S-transferase potentially involved in antioxidation against Cr(VI) stress. Laccase was found to play a key role in RB5 decolorization by T. hirsuta. These results suggested that the simultaneous removal of co-contaminants by T. hirsuta could be achieved with Cr(VI) exposure. Overall, the elucidation of the molecular basis in details will help to advance the general knowledge about the fungus by facing harsh environments, and put forward a further possible application of fungi on environmental remediation.
Collapse
Affiliation(s)
- Jiashu Liu
- Department of Biotechnology, Key Laboratory of Molecular Biophysics of MOE, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, 430074, PR China
| | - Fengjie Liu
- Department of Biotechnology, Key Laboratory of Molecular Biophysics of MOE, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, 430074, PR China
| | - Chunlian Ding
- Institute of Environmental Science and Engineering, School of Metallurgy and Environment, Central South University, Changsha, 410083, PR China
| | - Fuying Ma
- Department of Biotechnology, Key Laboratory of Molecular Biophysics of MOE, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, 430074, PR China
| | - Hongbo Yu
- Department of Biotechnology, Key Laboratory of Molecular Biophysics of MOE, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, 430074, PR China
| | - Yan Shi
- Institute of Environmental Science and Engineering, School of Metallurgy and Environment, Central South University, Changsha, 410083, PR China.
| | - Xiaoyu Zhang
- Department of Biotechnology, Key Laboratory of Molecular Biophysics of MOE, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, 430074, PR China.
| |
Collapse
|
21
|
Bresolí-Obach R, Frattini M, Abbruzzetti S, Viappiani C, Agut M, Nonell S. Tetramethylbenzidine: An Acoustogenic Photoacoustic Probe for Reactive Oxygen Species Detection. SENSORS (BASEL, SWITZERLAND) 2020; 20:E5952. [PMID: 33096750 PMCID: PMC7590141 DOI: 10.3390/s20205952] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/22/2020] [Revised: 10/15/2020] [Accepted: 10/18/2020] [Indexed: 12/21/2022]
Abstract
Photoacoustic imaging is attracting a great deal of interest owing to its distinct advantages over other imaging techniques such as fluorescence or magnetic resonance image. The availability of photoacoustic probes for reactive oxygen and nitrogen species (ROS/RNS) could shed light on a plethora of biological processes mediated by these key intermediates. Tetramethylbenzidine (TMB) is a non-toxic and non-mutagenic colorless dye that develops a distinctive blue color upon oxidation. In this work, we have investigated the potential of TMB as an acoustogenic photoacoustic probe for ROS/RNS. Our results indicate that TMB reacts with hypochlorite, hydrogen peroxide, singlet oxygen, and nitrogen dioxide to produce the blue oxidation product, while ROS, such as the superoxide radical anion, sodium peroxide, hydroxyl radical, or peroxynitrite, yield a colorless oxidation product. TMB does not penetrate the Escherichia coli cytoplasm but is capable of detecting singlet oxygen generated in its outer membrane.
Collapse
Affiliation(s)
- Roger Bresolí-Obach
- Institut Químic de Sarrià, Universitat Ramon Llull, Via Augusta 390, 08017 Barcelona, Spain; (R.B.-O.); (M.F.); (M.A.)
- Department of Chemistry, Katholieke Universiteit Leuven, celestijnenlaan 200F, 3001 Heverlee (Leuven), Belgium
| | - Marcello Frattini
- Institut Químic de Sarrià, Universitat Ramon Llull, Via Augusta 390, 08017 Barcelona, Spain; (R.B.-O.); (M.F.); (M.A.)
- Dipartimento di Scienze Matematiche, Fisiche e Informatiche, Università di Parma, Parco Area delle Scienze 7A, 43124 Parma, Italy; (S.A.); (C.V.)
| | - Stefania Abbruzzetti
- Dipartimento di Scienze Matematiche, Fisiche e Informatiche, Università di Parma, Parco Area delle Scienze 7A, 43124 Parma, Italy; (S.A.); (C.V.)
| | - Cristiano Viappiani
- Dipartimento di Scienze Matematiche, Fisiche e Informatiche, Università di Parma, Parco Area delle Scienze 7A, 43124 Parma, Italy; (S.A.); (C.V.)
| | - Montserrat Agut
- Institut Químic de Sarrià, Universitat Ramon Llull, Via Augusta 390, 08017 Barcelona, Spain; (R.B.-O.); (M.F.); (M.A.)
| | - Santi Nonell
- Institut Químic de Sarrià, Universitat Ramon Llull, Via Augusta 390, 08017 Barcelona, Spain; (R.B.-O.); (M.F.); (M.A.)
| |
Collapse
|
22
|
Boosting electrochemical immunosensing performance by employing acetaminophen as a peroxidase substrate. Biosens Bioelectron 2020; 165:112337. [DOI: 10.1016/j.bios.2020.112337] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2019] [Revised: 05/12/2020] [Accepted: 05/27/2020] [Indexed: 11/24/2022]
|
23
|
Yim G, Kim CY, Kang S, Min DH, Kang K, Jang H. Intrinsic Peroxidase-Mimicking Ir Nanoplates for Nanozymatic Anticancer and Antibacterial Treatment. ACS APPLIED MATERIALS & INTERFACES 2020; 12:41062-41070. [PMID: 32830481 DOI: 10.1021/acsami.0c10981] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
The study of inorganic nanozymes to overcome the disadvantages of bio-enzymes, such as the requirement of optimized reaction conditions and lack of durability against environmental factors, is one of the most significant research topics at present. In this work, we comprehensively analyzed the intrinsic peroxidase-like activity of Ir-based nanoparticles, the biological and nanozymatic potentials of which have not yet been explored. These particles were synthesized by the galvanic replacement of Ag nanoplates with Ir. Through the confirmed peroxidase-like activity and hydrogen peroxide decomposition with free radical generation facilitated by these particles, the antibacterial and anticancer effects were successfully verified in vitro. The nanozyme-based therapeutic effect observed at concentrations at which these nanoparticles do not show cytotoxicity suggests that it is possible to achieve more precise and selective local treatment with these particles. The observed highly efficient peroxidase-like activity of these nanoparticles is attributed to the partially mixed composition of Ir-Ag-IrO2 formed through the galvanic replacement reaction in the synthetic process.
Collapse
Affiliation(s)
- Gyeonghye Yim
- Department of Chemistry, Kwangwoon University, 20 Gwangwoon-ro, Nowon-gu, Seoul 01897, Republic of Korea
| | - Chan Yeon Kim
- Department of Applied Chemistry, Kyung Hee University, 1732 Deogyeong-daero, Yongin 17104, Gyeonggi, Republic of Korea
| | - Seounghun Kang
- Department of Chemistry, Seoul National University, Seoul 08826, Republic of Korea
- Center for RNA Research, Institute for Basic Science (IBS), Seoul National University, Seoul 08826, Republic of Korea
| | - Dal-Hee Min
- Department of Chemistry, Seoul National University, Seoul 08826, Republic of Korea
- Center for RNA Research, Institute for Basic Science (IBS), Seoul National University, Seoul 08826, Republic of Korea
- Institute of Biotherapeutics Convergence Technology, Lemonex Inc., Seoul 08826, Republic of Korea
| | - Kyungtae Kang
- Department of Applied Chemistry, Kyung Hee University, 1732 Deogyeong-daero, Yongin 17104, Gyeonggi, Republic of Korea
| | - Hongje Jang
- Department of Chemistry, Kwangwoon University, 20 Gwangwoon-ro, Nowon-gu, Seoul 01897, Republic of Korea
| |
Collapse
|
24
|
Ezenarro JJ, Párraga-Niño N, Sabrià M, Del Campo FJ, Muñoz-Pascual FX, Mas J, Uria N. Rapid Detection of Legionella pneumophila in Drinking Water, Based on Filter Immunoassay and Chronoamperometric Measurement. BIOSENSORS-BASEL 2020; 10:bios10090102. [PMID: 32825468 PMCID: PMC7558583 DOI: 10.3390/bios10090102] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Revised: 07/21/2020] [Accepted: 08/12/2020] [Indexed: 12/19/2022]
Abstract
Legionella is a pathogenic bacterium, ubiquitous in freshwater environments and able to colonise man-made water systems from which it can be transmitted to humans during outbreaks. The prevention of such outbreaks requires a fast, low cost, automated and often portable detection system. In this work, we present a combination of sample concentration, immunoassay detection, and measurement by chronoamperometry. A nitrocellulose microfiltration membrane is used as support for both the water sample concentration and the Legionella immunodetection. The horseradish peroxidase enzymatic label of the antibodies permits using the redox substrate 3,3′,5,5′-Tetramethylbenzidine to generate current changes proportional to the bacterial concentration present in drinking water. Carbon screen-printed electrodes are employed in the chronoamperometric measurements. Our system reduces the detection time: from the 10 days required by the conventional culture-based methods, to 2–3 h, which could be crucial to avoid outbreaks. Additionally, the system shows a linear response (R2 value of 0.99), being able to detect a range of Legionella concentrations between 101 and 104 cfu·mL−1 with a detection limit (LoD) of 4 cfu·mL−1.
Collapse
Affiliation(s)
- Josune J. Ezenarro
- Departament de Genètica i Microbiologia, Universitat Autònoma de Barcelona, E-08193 Cerdanyola, Spain;
- Waterologies S.L, C/Dinamarca, 3 (nave 9), Polígon Industrial Les Comes, E-08700c Igualada, Spain
- Correspondence: (J.J.E.); (N.U.)
| | - Noemí Párraga-Niño
- Unitat de Malalties Infeccioses, Fundació Institut de Investigació Germans Trias I Pujol, E-08916 Badalona, Spain; (N.P.-N.); (M.S.)
| | - Miquel Sabrià
- Unitat de Malalties Infeccioses, Fundació Institut de Investigació Germans Trias I Pujol, E-08916 Badalona, Spain; (N.P.-N.); (M.S.)
| | - Fancisco Javier Del Campo
- Institut de Microelectrònica de Barcelona, CNM-CSIC, Esfera UAB-CEI, Campus Nord UAB, E-08193 Bellaterra, Spain; (F.J.D.C.); (F.-X.M.-P.)
- IKERBASQUE, Basque Foundation for Science, E-48013 Bilbao, Spain
| | - Francesc-Xavier Muñoz-Pascual
- Institut de Microelectrònica de Barcelona, CNM-CSIC, Esfera UAB-CEI, Campus Nord UAB, E-08193 Bellaterra, Spain; (F.J.D.C.); (F.-X.M.-P.)
| | - Jordi Mas
- Departament de Genètica i Microbiologia, Universitat Autònoma de Barcelona, E-08193 Cerdanyola, Spain;
| | - Naroa Uria
- Institut de Microelectrònica de Barcelona, CNM-CSIC, Esfera UAB-CEI, Campus Nord UAB, E-08193 Bellaterra, Spain; (F.J.D.C.); (F.-X.M.-P.)
- Correspondence: (J.J.E.); (N.U.)
| |
Collapse
|
25
|
Reduced nonspecific protein adsorption by application of diethyldithiocarbamate in receptor layer of diphtheria toxoid electrochemical immunosensor. Bioelectrochemistry 2020; 132:107415. [DOI: 10.1016/j.bioelechem.2019.107415] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2019] [Revised: 11/12/2019] [Accepted: 11/12/2019] [Indexed: 11/18/2022]
|
26
|
Wang X, Wu J, Mao W, He X, Ruan L, Zhu J, Shu P, Zhang Z, Jiang B, Zhang X. A tetrahedral DNA nanostructure-decorated electrochemical platform for simple and ultrasensitive EGFR genotyping of plasma ctDNA. Analyst 2020; 145:4671-4679. [PMID: 32458862 DOI: 10.1039/d0an00591f] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
In this study, we propose an on-site electrochemical platform for sensitive simultaneous genotyping of the two major EGFR mutations (19del and L858R) through plasma ctDNA based on tetrahedral DNA nanostructure decorated screen-printed electrodes.
Collapse
|
27
|
González-López A, Blanco-López MC, Fernández-Abedul MT. Micropipette Tip-Based Immunoassay with Electrochemical Detection of Antitissue Transglutaminase to Diagnose Celiac Disease Using Staples and a Paper-Based Platform. ACS Sens 2019; 4:2679-2687. [PMID: 31497948 DOI: 10.1021/acssensors.9b01096] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
In this work, 1-200 μL polypropylene micropipette tips were used as platforms for performing immunoassays after converting their inner surfaces on a capture zone for the analyte of interest. We have used a micropipette-tip immunoelectroanalytical platform for the detection of antitissue transglutaminase (IgA), the main biomarker for celiac disease. Modification of the tip wall with poly-l-lysine allowed adsorption of tissue transglutaminase (tTG), which will capture later anti-tTG (IgA) antibodies developed in celiac-affected people. A sandwich-type format was followed, incubating simultaneously the analyte and the detection antibody, labeled with horseradish peroxidase. With this new application for an extremely common lab material, we can perform quantitative analysis by dispensing the liquid into a low-cost and miniaturized staple-based paper electrochemical platform. The analytical signal was the reduction of the enzymatically oxidized substrate, recorded chronoamperometrically (i-t curve). The intensity of the current obtained at a fixed time after the application of the cathodic potential followed a linear relationship with anti-tTG (IgA) concentration. The relative standard deviation obtained for immunoassays performed in different tips indicates the adequate precision of this new methodology, which is very promising for decentralized analysis. Negative and positive controls produced results that were in accordance with those obtained with spectrophotometric enzyme linked-immunosorbent assays.
Collapse
Affiliation(s)
- Andrea González-López
- Department of Physical and Analytical Chemistry, University of Oviedo, 33006 Oviedo, Spain
| | | | | |
Collapse
|
28
|
Valverde A, ben Hassine A, Serafín V, Muñoz‐San Martín C, Pedrero M, Garranzo‐Asensio M, Gamella M, Raouafi N, Barderas R, Yáñez‐Sedeño P, Campuzano S, Pingarrón JM. Dual Amperometric Immunosensor for Improving Cancer Metastasis Detection by the Simultaneous Determination of Extracellular and Soluble Circulating Fraction of Emerging Metastatic Biomarkers. ELECTROANAL 2019. [DOI: 10.1002/elan.201900506] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Alejandro Valverde
- Analytical Chemistry Dept., Faculty of ChemistryComplutense University of Madrid. E-28040 Madrid Spain
| | - Amira ben Hassine
- Analytical Chemistry Dept., Faculty of ChemistryComplutense University of Madrid. E-28040 Madrid Spain
- University of Tunis El ManarTunis Faculty of Science, Sensors and Biosensors Group, Laboratory of Analytical Chemistry and Electrochemistry 2092 Tunis El Manar Tunisia
| | - Verónica Serafín
- Analytical Chemistry Dept., Faculty of ChemistryComplutense University of Madrid. E-28040 Madrid Spain
| | - Cristina Muñoz‐San Martín
- Analytical Chemistry Dept., Faculty of ChemistryComplutense University of Madrid. E-28040 Madrid Spain
| | - María Pedrero
- Analytical Chemistry Dept., Faculty of ChemistryComplutense University of Madrid. E-28040 Madrid Spain
| | | | - Maria Gamella
- Analytical Chemistry Dept., Faculty of ChemistryComplutense University of Madrid. E-28040 Madrid Spain
| | - Noureddine Raouafi
- University of Tunis El ManarTunis Faculty of Science, Sensors and Biosensors Group, Laboratory of Analytical Chemistry and Electrochemistry 2092 Tunis El Manar Tunisia
| | - Rodrigo Barderas
- UFIECInstitute of Health Carlos III. E-28220 Majadahonda, Madrid Spain
| | - Paloma Yáñez‐Sedeño
- Analytical Chemistry Dept., Faculty of ChemistryComplutense University of Madrid. E-28040 Madrid Spain
| | - Susana Campuzano
- Analytical Chemistry Dept., Faculty of ChemistryComplutense University of Madrid. E-28040 Madrid Spain
| | - José M. Pingarrón
- Analytical Chemistry Dept., Faculty of ChemistryComplutense University of Madrid. E-28040 Madrid Spain
| |
Collapse
|
29
|
Direct PCR-free electrochemical biosensing of plant-food derived nucleic acids in genomic DNA extracts. Application to the determination of the key allergen Sola l 7 in tomato seeds. Biosens Bioelectron 2019; 137:171-177. [DOI: 10.1016/j.bios.2019.05.011] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2019] [Revised: 05/02/2019] [Accepted: 05/04/2019] [Indexed: 12/14/2022]
|
30
|
Rapid detection of Salmonella enterica serotype Typhimurium in large volume samples using porous electrodes in a flow-through, enzyme-amplified immunoelectrochemical sensor. Anal Bioanal Chem 2019; 411:5233-5242. [PMID: 31127336 PMCID: PMC6647188 DOI: 10.1007/s00216-019-01901-3] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2017] [Revised: 04/26/2019] [Accepted: 05/07/2019] [Indexed: 11/26/2022]
Abstract
Foodborne illness is a common yet preventable public health concern generating significant costs for the healthcare system, making systems to accurately detect this pathogen a topic of current research. Enzyme-based immunoassays are highly desirable because they offer shorter response times compared to traditional culture-based methods. Biosensors employing the electrochemical and optical detection of a substrate oxidized by horseradish peroxidase (HRP) have been used to successfully detect biomolecules; however, their inability to handle large sample volumes severely limits their application to food safety despite their accuracy and reliability. Here, we describe a biosensor with the capacity to process a large sample volume by utilizing an Ag/AgCl reference electrode, a platinum counter electrode, and a porous working electrode made from graphite felt coated with antibodies specific for Salmonella common structural antigens. This design allows samples to flow-through the electrode while capturing target pathogens. Following sample exposure, HRP-conjugated antibodies facilitate pathogen detection that culminates in an oxidation reaction with the output analyzed via Osteryoung square wave voltammetry. Detection limits of 1000 Salmonella enterica serotype Typhimurium cells were achieved using this newly devised flow-through, enzyme-amplified, electrochemical biosensor in samples as large as 60 mL. The low cost of the sensor allows for incorporation into disposable detection devices while its design not only broadens its applicability in sample processing but also permits the detection of various microbes by simply exchanging the antibodies.
Collapse
|
31
|
Jarczewska M, Trojan A, Gągała M, Malinowska E. Studies on the Affinity‐based Biosensors for Electrochemical Detection of HER2 Cancer Biomarker. ELECTROANAL 2019. [DOI: 10.1002/elan.201900041] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Marta Jarczewska
- The Chair of Medical BiotechnologyFaculty of ChemistryWarsaw University of Technology Noakowskiego 3 00-664 Warsaw Poland
| | - Anita Trojan
- The Chair of Medical BiotechnologyFaculty of ChemistryWarsaw University of Technology Noakowskiego 3 00-664 Warsaw Poland
| | - Małgorzata Gągała
- The Chair of Medical BiotechnologyFaculty of ChemistryWarsaw University of Technology Noakowskiego 3 00-664 Warsaw Poland
| | - Elżbieta Malinowska
- The Chair of Medical BiotechnologyFaculty of ChemistryWarsaw University of Technology Noakowskiego 3 00-664 Warsaw Poland
- Centre for Advanced Materials and Technologies CEZAMAT Poleczki 19 02-822 Warsaw Poland
| |
Collapse
|
32
|
Huang L, Cao YJ, Sun XY, Liu B, Shen JS. Diverse applications of TMB-based sensing probes. Org Biomol Chem 2019; 16:5667-5676. [PMID: 30043797 DOI: 10.1039/c8ob01364k] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Extending the research on 3,3',5,5'-tetramethylbenzidine (TMB) and its derivatives in analytical chemistry is important, considering that TMB is widely used as an enzyme catalytic substrate. In this work, two TMB derivatives, TMBS and TMBB, were synthesized via a facile and one-step condensation reaction between the -NH2 group of TMB and the -CHO group of salicylaldehyde or benzaldehyde. Because at low pH the two Schiff base compounds can release TMB which can emit strong fluorescence, the probes could show dual-modal signal responses, fluorescence and UV-vis absorption, towards the pH. Practical applications of pH sensing in Chinese rice vinegar and lemon juice samples were successfully demonstrated. On the basis of these findings, a catalytic chromogenic reaction was developed to monitor the pH with the naked eye, too. Furthermore, considering the chemical equilibrium reaction between CO2 and H2O and that glucose oxidase (GOD) can catalyse the dehydrogenation and oxidation reaction of β-d-glucose to produce gluconic acid, both of which can result in lowering the pH values of the two Schiff base systems, highly sensitive and selective dual-modal sensing systems for detecting CO2 and β-d-glucose have also been successfully established. Therefore, the two synthesized TMB derivatives can demonstrate their robust application potential.
Collapse
Affiliation(s)
- Li Huang
- College of Materials Science and Engineering, Huaqiao University, Xiamen 361021, China.
| | | | | | | | | |
Collapse
|
33
|
Boriachek K, Masud MK, Palma C, Phan HP, Yamauchi Y, Hossain MSA, Nguyen NT, Salomon C, Shiddiky MJA. Avoiding Pre-Isolation Step in Exosome Analysis: Direct Isolation and Sensitive Detection of Exosomes Using Gold-Loaded Nanoporous Ferric Oxide Nanozymes. Anal Chem 2019; 91:3827-3834. [DOI: 10.1021/acs.analchem.8b03619] [Citation(s) in RCA: 147] [Impact Index Per Article: 29.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Kseniia Boriachek
- School of Environment and Science, Griffith University Nathan Campus, Nathan, Queensland 4111, Australia
- Queensland Micro and Nanotechnology Centre (QMNC), Griffith University Nathan Campus, Nathan, Queensland 4111, Australia
| | - Mostafa Kamal Masud
- Queensland Micro and Nanotechnology Centre (QMNC), Griffith University Nathan Campus, Nathan, Queensland 4111, Australia
- Australian Institute for Bioengineering and Nanotechnology (AIBN), The University of Queensland, Brisbane, Queensland 4072, Australia
| | - Carlos Palma
- Exosome Biology Laboratory, Centre for Clinical Diagnostics, University of Queensland Centre for Clinical Research, Royal Brisbane and Women’s Hospital, The University of Queensland, Brisbane, Queensland 4029, Australia
| | - Hoang-Phuong Phan
- Queensland Micro and Nanotechnology Centre (QMNC), Griffith University Nathan Campus, Nathan, Queensland 4111, Australia
| | - Yusuke Yamauchi
- Australian Institute for Bioengineering and Nanotechnology (AIBN), The University of Queensland, Brisbane, Queensland 4072, Australia
- School of Chemical Engineering, Faculty of Engineering, Architecture and Information Technology (EAIT), The University of Queensland, Brisbane, Queensland 4072, Australia
- Department of Plant & Environmental New Resources, Kyung Hee University, 1732 Deogyeong-daero, Giheunggu, Yongin-si, Gyeonggi-do 446-701, South Korea
| | - Md. Shahriar A. Hossain
- Australian Institute for Bioengineering and Nanotechnology (AIBN), The University of Queensland, Brisbane, Queensland 4072, Australia
- School of Mechanical & Mining Engineering, Faculty of Engineering, Architecture and Information Technology (EAIT), The University of Queensland, Brisbane, Queensland 4072, Australia
| | - Nam-Trung Nguyen
- Queensland Micro and Nanotechnology Centre (QMNC), Griffith University Nathan Campus, Nathan, Queensland 4111, Australia
| | - Carlos Salomon
- Exosome Biology Laboratory, Centre for Clinical Diagnostics, University of Queensland Centre for Clinical Research, Royal Brisbane and Women’s Hospital, The University of Queensland, Brisbane, Queensland 4029, Australia
- Department of Clinical Biochemistry and Immunology, Faculty of Pharmacy, University of Concepción, Concepción 4030000, Chile
| | - Muhammad J. A. Shiddiky
- School of Environment and Science, Griffith University Nathan Campus, Nathan, Queensland 4111, Australia
- Queensland Micro and Nanotechnology Centre (QMNC), Griffith University Nathan Campus, Nathan, Queensland 4111, Australia
| |
Collapse
|
34
|
Massoud MA, El-Sayed MA, Bayoumi WA, Mansour B. Cytotoxicity and Molecular Targeting Study of Novel 2-Chloro-3- substituted Quinoline Derivatives as Antitumor Agents. LETT DRUG DES DISCOV 2019. [DOI: 10.2174/1570180815666180604090924] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Background: Quinoline scaffold acts as “privileged structure” for anticancer drug design. Certain derivatives showed good results through different mechanisms as topoisomerase 1 and kinase inhibition. </P><P> Methods: A new series of 2-chloro-3-(2-amino-3-cyano-4H-chromene, 4H-pyranyl and fused 1- cyclohexen-4-yl)quinoline structures (3-5, 6 and 7) were designed, synthesized, and evaluated for their in vitro antitumor activity. All compounds were tested by MTT assay against a panel of four different human tumor cell lines. The inhibitory activity of selected compounds was assessed on topoisomerase 1 and epidermal growth factor receptor tyrosine kinase via ELISA. In addition, compounds 7b and 3a were docked into the X-ray crystal structure of Topo 1 and EGFR enzymes, respectively to explain the molecular basis of the potent activity. </P><P> Results: Compounds 3a, 3b and 7b showed characteristic efficacy profile. 7b showed the best cytotoxic activity on all types of tested cell lines with IC50 range (15.8±1.30 to 28.2±3.37 µM), relative to 5-fluoruracil of IC50 range (40.7±2.46 to 63.8±2.69 µM). Via ELISA, 7b and 3a showed characteristic inhibition profile on Topo 1 and EGFR-TK respectively. In addition, 7b has scored binding energy (101.61 kcal/mol) and six hydrogen bonds with amino acids conserved residues in the enzyme pocket. </P><P> Conclusion: Analysis of results revealed that compounds 7a and 7b mainly were Topo 1 inhibitors while 3a was mainly EGFR inhibitor. This property may be exploited to design future quinoline derivatives as antitumor agents with enhanced selectivity towards either of the two molecular targets.
Collapse
Affiliation(s)
- Mohammed A.M. Massoud
- Department of Pharmaceutical Organic Chemistry, Faculty of Pharmacy, University of Mansoura, Mansoura, Egypt
| | - Magda A. El-Sayed
- Department of Pharmaceutical Organic Chemistry, Faculty of Pharmacy, University of Mansoura, Mansoura, Egypt
| | - Waleed A. Bayoumi
- Department of Pharmaceutical Organic Chemistry, Faculty of Pharmacy, University of Mansoura, Mansoura, Egypt
| | - Basem Mansour
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Delta University for Science and Technology, Gamasa City, Mansoura, Egypt
| |
Collapse
|
35
|
Muñoz-San Martín C, Pedrero M, Manuel de Villena FJ, Garranzo-Asensio M, Rodríguez N, Domínguez G, Barderas R, Campuzano S, Pingarrón JM. Disposable Amperometric Immunosensor for the Determination of the E-Cadherin Tumor Suppressor Protein in Cancer Cells and Human Tissues. ELECTROANAL 2018. [DOI: 10.1002/elan.201800645] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Cristina Muñoz-San Martín
- Departamento de Química Analítica; Facultad de CC. Químicas; Universidad Complutense de Madrid; E-28040 Madrid Spain
| | - María Pedrero
- Departamento de Química Analítica; Facultad de CC. Químicas; Universidad Complutense de Madrid; E-28040 Madrid Spain
| | - F. Javier Manuel de Villena
- Departamento de Química Analítica; Facultad de CC. Químicas; Universidad Complutense de Madrid; E-28040 Madrid Spain
| | | | - Nuria Rodríguez
- Medical Oncology Department; Hospital Universitario La Paz; E-28046 Madrid Spain
| | - Gemma Domínguez
- Departamento de Medicina; Facultad de Medicina; Instituto de Investigaciones Biomédicas “Alberto Sols”, CSIC-UAM; E-28029 Madrid Spain
| | - Rodrigo Barderas
- UFIEC, CROSADIS, Instituto de Salud Carlos III; 28220 Majadahonda Madrid Spain
| | - Susana Campuzano
- Departamento de Química Analítica; Facultad de CC. Químicas; Universidad Complutense de Madrid; E-28040 Madrid Spain
| | - José M. Pingarrón
- Departamento de Química Analítica; Facultad de CC. Químicas; Universidad Complutense de Madrid; E-28040 Madrid Spain
| |
Collapse
|
36
|
Valverde A, Povedano E, Montiel VRV, Yáñez-Sedeño P, Garranzo-Asensio M, Barderas R, Campuzano S, Pingarrón JM. Electrochemical immunosensor for IL-13 Receptor α2 determination and discrimination of metastatic colon cancer cells. Biosens Bioelectron 2018; 117:766-772. [DOI: 10.1016/j.bios.2018.07.017] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2018] [Revised: 07/06/2018] [Accepted: 07/09/2018] [Indexed: 02/05/2023]
|
37
|
Bettazzi F, Romero Natale A, Torres E, Palchetti I. Glyphosate Determination by Coupling an Immuno-Magnetic Assay with Electrochemical Sensors. SENSORS (BASEL, SWITZERLAND) 2018; 18:E2965. [PMID: 30200562 PMCID: PMC6164882 DOI: 10.3390/s18092965] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/20/2018] [Revised: 08/31/2018] [Accepted: 09/01/2018] [Indexed: 01/05/2023]
Abstract
Glyphosate (N-(phosphonomethyl)glycine) is the most frequently used broad-spectrum herbicide worldwide. Its mechanism of action is based on the inhibition of an enzyme that is essential to plant growth. Its intensive use has caused global contamination to occur, which has not only affected the ecosystems, but even food and other objects of common use. Thus, there is a pronounced need for developing analytical methods for glyphosate determination in different matrices. Here, an electrochemical competitive immunoassay, based on the use of antibody-modified magnetic particles, has been developed. Tetramethylbenzidine (TMB) has been used as an enzymatic substrate. The extent of the affinity reaction has been achieved by monitoring the current value, due to the reduction of the enzymatic product. A disposable screen-printed electrochemical cell has been used. The calibration curve has been recorded in the 0⁻10,000 ng/L concentration range, with a detection limit of 5 ng/L and quantification limit of 30 ng/L. The electrochemical immunoassay has also been applied to the analysis of spiked beer samples.
Collapse
Affiliation(s)
- Francesca Bettazzi
- Dipartimento di Chimica, Università degli Studi di Firenze, Via della Lastruccia 3, 50019 Sesto Fiorentino (Fi), Italy.
| | - Aline Romero Natale
- Centro de Química-ICUAP, Benemérita Universidad Autónoma de Puebla, 72570 Puebla, Mexico.
| | - Eduardo Torres
- Centro de Química-ICUAP, Benemérita Universidad Autónoma de Puebla, 72570 Puebla, Mexico.
| | - Ilaria Palchetti
- Dipartimento di Chimica, Università degli Studi di Firenze, Via della Lastruccia 3, 50019 Sesto Fiorentino (Fi), Italy.
| |
Collapse
|
38
|
Sun Q, Yan F, Su B. Label-free electrochemical biosensors based on 3,3',5,5'-tetramethylbenzidine responsive isoporous silica-micelle membrane. Biosens Bioelectron 2018; 105:129-136. [PMID: 29412936 DOI: 10.1016/j.bios.2018.01.026] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2017] [Revised: 12/21/2017] [Accepted: 01/12/2018] [Indexed: 12/18/2022]
Abstract
3,3',5,5'-Tetramethylbenzidine (TMB) has been frequently used as an indicator in G-quadruplex/hemin DNAzyme (G4zyme)-based chemical and biochemical analysis, and its oxidation products are usually monitored by electrochemical or optical methods to quantify G4zyme formation-related analytes. Herein we report a simple electrochemical approach based on isoporous silica-micelle membrane (iSMM) to measure TMB, instead of its oxidation products, in G4zyme-based detection of specific analytes. The iSMM was grown on the indium tin oxide (ITO) electrode, which was composed of highly ordered, vertically oriented silica nanochannels and cylindrical micelles of cetyltrimethylammonium. The iSMM-ITO electrode was selectively responsive to neutral TMB but not its oxidation products, thanks to the sieving and pre-concentration capacity of micellar structures in terms of molecular charge and lipophilicity. In other words, only TMB could be extracted and enriched into micelles and subsequently oxidized at the underlying ITO electrode surface (namely the micelle/ITO interface), generating an amplified anodic current. Since the depletion of TMB was catalyzed by G4zymes formed in the presence of specific analyte, the decrease of this anodic current enabled the quantitative detection of this analyte. The current variation relative to its initial value ((j0-j)/j0), termed as the current attenuation ratio, showed the obvious dependence on the analyte concentration. As proof-of-concept experiments, four substances, i.e., potassium cation (K+), adenosine triphosphate, thrombin and nucleic acid, were detected in aqueous media and the analysis of K+ in pre-treated human serum was also performed.
Collapse
Affiliation(s)
- Qinqin Sun
- Institute of Analytical Chemistry, Department of Chemistry, Zhejiang University, Hangzhou 310058, China
| | - Fei Yan
- Institute of Analytical Chemistry, Department of Chemistry, Zhejiang University, Hangzhou 310058, China
| | - Bin Su
- Institute of Analytical Chemistry, Department of Chemistry, Zhejiang University, Hangzhou 310058, China.
| |
Collapse
|
39
|
Fu Y, Yang Y, Tuersun T, Yu Y, Zhi J. Simple preparation and highly selective detection of silver ions using an electrochemical sensor based on sulfur-doped graphene and a 3,3′,5,5′-tetramethylbenzidine composite modified electrode. Analyst 2018; 143:2076-2082. [DOI: 10.1039/c7an02084h] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
An electrochemical sensor based on S-Gr-TMB/GCE was prepared to solve the nonselectivity problem of TMB as a spectral probe.
Collapse
Affiliation(s)
- Yang Fu
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials
- Technical Institute of Physics and Chemistry
- Chinese Academy of Sciences
- Beijing 100190
- PR China
| | - Yajie Yang
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials
- Technical Institute of Physics and Chemistry
- Chinese Academy of Sciences
- Beijing 100190
- PR China
| | - Tayierjiang Tuersun
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials
- Technical Institute of Physics and Chemistry
- Chinese Academy of Sciences
- Beijing 100190
- PR China
| | - Yuan Yu
- Insitute of Atomic and Molecular Science
- Shanxi University of Science & Technology
- Xian 710021
- PR China
| | - Jinfang Zhi
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials
- Technical Institute of Physics and Chemistry
- Chinese Academy of Sciences
- Beijing 100190
- PR China
| |
Collapse
|
40
|
Hou YH, Wang JJ, Jiang YZ, Lv C, Xia L, Hong SL, Lin M, Lin Y, Zhang ZL, Pang DW. A colorimetric and electrochemical immunosensor for point-of-care detection of enterovirus 71. Biosens Bioelectron 2018; 99:186-192. [DOI: 10.1016/j.bios.2017.07.035] [Citation(s) in RCA: 61] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2017] [Revised: 07/12/2017] [Accepted: 07/13/2017] [Indexed: 10/19/2022]
|
41
|
Development of an Immunosensor for PfHRP 2 as a Biomarker for Malaria Detection. BIOSENSORS-BASEL 2017; 7:bios7030028. [PMID: 28718841 PMCID: PMC5618034 DOI: 10.3390/bios7030028] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/13/2017] [Revised: 07/10/2017] [Accepted: 07/12/2017] [Indexed: 11/17/2022]
Abstract
Plasmodium falciparum histidine-rich protein 2 (PfHRP 2) was selected in this work as the biomarker for the detection and diagnosis of malaria. An enzyme-linked immunosorbent assay (ELISA) was first developed to evaluate the immunoreagent’s suitability for the sensor’s development. A gold-based sensor with an integrated counter and an Ag/AgCl reference electrode was first selected and characterised and then used to develop the immunosensor for PfHRP 2, which enables a low cost, easy to use, and sensitive biosensor for malaria diagnosis. The sensor was applied to immobilise the anti-PfHRP 2 monoclonal antibody as the capture receptor. A sandwich ELISA assay format was constructed using horseradish peroxidase (HRP) as the enzyme label, and the electrochemical signal was generated using a 3, 3′, 5, 5′tetramethyl-benzidine dihydrochloride (TMB)/H2O2 system. The performance of the assay and the sensor were optimised and characterised, achieving a PfHRP 2 limit of detection (LOD) of 2.14 ng·mL−1 in buffer samples and 2.95 ng∙mL−1 in 100% spiked serum samples. The assay signal was then amplified using gold nanoparticles conjugated detection antibody-enzyme and a detection limit of 36 pg∙mL−1 was achieved in buffer samples and 40 pg∙mL−1 in serum samples. This sensor format is ideal for malaria detection and on-site analysis as a point-of-care device (POC) in resource-limited settings where the implementation of malaria diagnostics is essential in control and elimination efforts.
Collapse
|
42
|
Vranish JN, Ancona MG, Oh E, Susumu K, Medintz IL. Enhancing coupled enzymatic activity by conjugating one enzyme to a nanoparticle. NANOSCALE 2017; 9:5172-5187. [PMID: 28393943 DOI: 10.1039/c7nr00200a] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
Enzymes have long been a prime research target for the commercial production of commodity and specialty chemicals, design of sensing devices, and the development of therapeutics and new chemical processes. Industrial applications for enzymes can potentially be enhanced by enzyme immobilization which often allows for increased enzyme stability, facile product purification, and minimized substrate diffusion times in multienzymatic cascades, but this is usually at the cost of a significant decrease in catalytic rates. Recently, enzyme immobilization has been advanced by the discovery that nanoparticle surfaces are frequently able to enhance the activity of the bound enzyme. Here we extend this observation to a multienzymatic coupled system using semiconductor quantum dots (QDs) as a model nanoparticle material and the prototypical enzyme pair of glucose oxidase (GOX) and horseradish peroxidase (HRP). We first demonstrate that HRP binding to QDs has a significant beneficial effect on enzymatic activity, producing a >2-fold improvement in kcat. We argue that this enhancement is due to affinity of the QD surface for the substrate. Furthermore, we demonstrate that when the ratio of GOX to HRP is adjusted to allow HRP to be the rate-limiting step of the pathway, the QD-induced rate enhancement of HRP can be maintained in a multi-enzyme cascade. Kinetic analysis shows that the underlying processes can be simulated numerically and provide insight into the governing mechanisms. The potential of nanoparticle-based catalytic enhancement is then discussed in the context of multienzyme cascades and synthetic biology.
Collapse
|
43
|
Quantitative Detection of NADH Using a Novel Enzyme-Assisted Method Based on Surface-Enhanced Raman Scattering. SENSORS 2017; 17:s17040788. [PMID: 28387704 PMCID: PMC5422061 DOI: 10.3390/s17040788] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/19/2017] [Revised: 03/30/2017] [Accepted: 03/30/2017] [Indexed: 01/26/2023]
Abstract
An enzymatic method for quantitative detection of the reduced form of nicotinamide-adenine dinucleotide (NADH) using surface-enhanced Raman scattering was developed. Under the action of NADH oxidase and horseradish peroxidase, NADH can generate hydrogen peroxide (H2O2) in a 1:1 molar ratio, and the H2O2 can oxidize a chromogen into pigment with a 1:1 molar ratio. Therefore, the concentration of NADH can be determined by detecting the generated pigment. In our experiments, eight chromogens were studied, and o-tolidine (OT) was selected because of the unique Raman peaks displayed by its corresponding pigment. The optimal OT concentration was 2 × 10−3 M, and this gave the best linear relationship and the widest linear range between the logarithmic H2O2 concentration and the logarithmic integrated SERS intensity of the peak centered at 1448 cm−1. Under this condition, the limit of detection for NADH was as low as 4 × 10−7 M. Two NADH samples with concentrations of 2 × 10−4 and 2 × 10−5 M were used to validate the linear relationship, and the logarithmic deviations were less than 3%.
Collapse
|
44
|
|
45
|
Target-triggered triple isothermal cascade amplification strategy for ultrasensitive microRNA-21 detection at sub-attomole level. Biosens Bioelectron 2016; 85:891-896. [DOI: 10.1016/j.bios.2016.06.008] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2016] [Revised: 05/14/2016] [Accepted: 06/04/2016] [Indexed: 12/31/2022]
|
46
|
Use of 3,3',5,5' tetramethylbenzidine as new electrochemical indicator of DNA hybridization and its application in genossensor. Biosens Bioelectron 2016; 85:226-231. [DOI: 10.1016/j.bios.2016.05.016] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2016] [Revised: 04/21/2016] [Accepted: 05/05/2016] [Indexed: 12/12/2022]
|
47
|
Amperometric IFN-γ immunosensors with commercially fabricated PCB sensing electrodes. Biosens Bioelectron 2016; 86:805-810. [PMID: 27479047 DOI: 10.1016/j.bios.2016.07.075] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2016] [Revised: 07/21/2016] [Accepted: 07/22/2016] [Indexed: 11/22/2022]
Abstract
Lab-on-a-Chip (LoC) technology has the potential to revolutionize medical Point-of-Care diagnostics. Currently, considerable research efforts are focused on innovative production technologies that will make commercial upscaling of lab-on-chip products financially viable. Printed circuit board (PCB) manufacturing techniques have several advantages in this field. In this paper we focus on transferring a complete IFN-γ enzyme-linked immune-sorbent assay (ELISA) onto a commercial PCB electrochemical biosensing platform, We adapted a commercially available ELISA to detect the enzyme product TMB/H2O2 using amperometry, successfully reproducing the colorimetry-obtained ELISA standard curve. The results demonstrate the potential for the integration of these components into an automated, disposable, electronic ELISA Lab-on-PCB diagnostic platform.
Collapse
|
48
|
Tseng TTC, Gusviputri A, Hoa LNQ. A simple, sensitive and compact electrochemical ELISA for estradiol based on chitosan deposited platinum wire microelectrodes. J Electroanal Chem (Lausanne) 2015. [DOI: 10.1016/j.jelechem.2015.10.017] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
|
49
|
Torrente-Rodríguez RM, Campuzano S, Ruiz-Valdepeñas Montiel V, Gamella M, Pingarrón JM. Electrochemical bioplatforms for the simultaneous determination of interleukin (IL)-8 mRNA and IL-8 protein oral cancer biomarkers in raw saliva. Biosens Bioelectron 2015; 77:543-8. [PMID: 26474095 DOI: 10.1016/j.bios.2015.10.016] [Citation(s) in RCA: 67] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2015] [Revised: 09/11/2015] [Accepted: 10/05/2015] [Indexed: 10/22/2022]
Abstract
The development of electrochemical magnetobiosensors for the simultaneous determination of two biomarkers associated with salivary oral cancer, protein IL-8 and its messenger RNA (IL-8 mRNA) associated, in undiluted human saliva samples is reported in this work. The implemented methodology involves the use of functionalized magnetic beads, specific antibodies against IL-8 protein, a specific hairpin DNA sequence for IL-8 mRNA and amperometric detection at disposable dual screen printed carbon electrodes. This methodology exhibits high sensitivity and selectivity for the target analytes providing detection limits of 0.21 nM for IL-8 mRNA and 72.4 pgmL(-1) (far below the clinical established cut-off of 600 pgmL(-1)) for IL-8 protein in undiluted saliva samples. The dual amperometric magnetobiosensor was applied to the direct determination of both biomarkers in spiked raw saliva samples and to determine the endogenous content of IL-8 protein in saliva samples from 7 healthy individuals. The obtained results were statistically in agreement with those provided by a commercial ELISA kit.
Collapse
Affiliation(s)
- R M Torrente-Rodríguez
- Departamento de Química Analítica, Facultad de CC. Químicas, Universidad Complutense de Madrid, E-28040 Madrid, Spain.
| | - S Campuzano
- Departamento de Química Analítica, Facultad de CC. Químicas, Universidad Complutense de Madrid, E-28040 Madrid, Spain.
| | - V Ruiz-Valdepeñas Montiel
- Departamento de Química Analítica, Facultad de CC. Químicas, Universidad Complutense de Madrid, E-28040 Madrid, Spain.
| | - M Gamella
- Departamento de Química Analítica, Facultad de CC. Químicas, Universidad Complutense de Madrid, E-28040 Madrid, Spain.
| | - J M Pingarrón
- Departamento de Química Analítica, Facultad de CC. Químicas, Universidad Complutense de Madrid, E-28040 Madrid, Spain.
| |
Collapse
|
50
|
Volpe G, Delibato E, Fabiani L, Pucci E, Piermarini S, D'Angelo A, Capuano F, De Medici D, Palleschi G. Development and evaluation of an ELIME assay to reveal the presence of Salmonella in irrigation water: Comparison with Real-Time PCR and the Standard Culture Method. Talanta 2015; 149:202-210. [PMID: 26717832 DOI: 10.1016/j.talanta.2015.11.015] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2015] [Revised: 10/29/2015] [Accepted: 11/04/2015] [Indexed: 11/15/2022]
Abstract
A reliable, low-cost and easy-to-use ELIME (Enzyme-Linked-Immuno-Magnetic-Electrochemical) assay for detection of Salmonella enterica in irrigation water is presented. Magnetic beads (MBs), coupled to a strip of eight-magnetized screen-printed electrodes localized at the bottom of eight wells (8-well/SPE strip), effectively supported a sandwich immunological chain. Enzymatic by-product is quickly measured by chronoamperometry, using a portable instrument. With the goal of developing a method able to detect a wide range of Salmonella serotypes, including S. Napoli and S. Thompson strains responsible for various community alerts, different kinds of MBs, antibodies and blocking agents were tested. The final system employs MBs coated with a broad reactivity monoclonal antibody anti-salmonella and blocked with dry milk. For a simple and rapid assay these two steps were performed in a preliminary phase, while the two sequential incubations for the immuno-recognition events were merged in a single step of 1h. In parallel a Real-Time PCR (RTi-PCR) method, based on a specific locked nucleic acid (LNA) fluorescent probe and an internal amplification control (IAC), was carried out. The selectivity of the ELIME and RTi-PCR assays was proved by inclusivity and exclusivity tests performed analyzing different Salmonella serotypes and non-target microorganisms, most commonly isolated from environmental sources. Furthermore, both methods were applied to experimentally and not experimentally contaminated irrigation water samples. Results confirmed by the ISO culture method, demonstrated the effectiveness of ELIME and RTi-PCR assays to detect a low number of salmonella cells (1-10 CFU/L) reducing drastically the long analysis time usually required to reveal this pathogen.
Collapse
Affiliation(s)
- G Volpe
- Department of Chemical Science and Technologies, "Tor Vergata" University, Via della Ricerca Scientifica, Rome, Italy.
| | - E Delibato
- Department of Veterinary Public Health and Food Safety, Istituto Superiore di Sanità, Viale Regina Elena 299, Rome, Italy.
| | - L Fabiani
- Department of Chemical Science and Technologies, "Tor Vergata" University, Via della Ricerca Scientifica, Rome, Italy
| | - E Pucci
- Department of Veterinary Public Health and Food Safety, Istituto Superiore di Sanità, Viale Regina Elena 299, Rome, Italy
| | - S Piermarini
- Department of Chemical Science and Technologies, "Tor Vergata" University, Via della Ricerca Scientifica, Rome, Italy
| | - A D'Angelo
- Department of Environment and Primary Prevention, Istituto Superiore di Sanità, Viale Regina Elena 299, Rome, Italy
| | - F Capuano
- Department of Food Inspection, Istituto Zooprofilattico Sperimentale del Mezzogiorno, Via della Salute 2, Portici, NA, Italy
| | - D De Medici
- Department of Veterinary Public Health and Food Safety, Istituto Superiore di Sanità, Viale Regina Elena 299, Rome, Italy
| | - G Palleschi
- Department of Chemical Science and Technologies, "Tor Vergata" University, Via della Ricerca Scientifica, Rome, Italy
| |
Collapse
|