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Li Y, Yang KD, Kong DC, Ye JF. Advances in phage display based nano immunosensors for cholera toxin. Front Immunol 2023; 14:1224397. [PMID: 37781379 PMCID: PMC10534012 DOI: 10.3389/fimmu.2023.1224397] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2023] [Accepted: 08/23/2023] [Indexed: 10/03/2023] Open
Abstract
Cholera, a persistent global public health concern, continues to cause outbreaks in approximately 30 countries and territories this year. The imperative to safeguard water sources and food from Vibrio cholerae, the causative pathogen, remains urgent. The bacterium is mainly disseminated via ingestion of contaminated water or food. Despite the plate method's gold standard status for detection, its time-consuming nature, taking several days to provide results, remains a challenge. The emergence of novel virulence serotypes raises public health concerns, potentially compromising existing detection methods. Hence, exploiting Vibrio cholerae toxin testing holds promise due to its inherent stability. Immunobiosensors, leveraging antibody specificity and sensitivity, present formidable tools for detecting diverse small molecules, encompassing drugs, hormones, toxins, and environmental pollutants. This review explores cholera toxin detection, highlighting phage display-based nano immunosensors' potential. Engineered bacteriophages exhibit exceptional cholera toxin affinity, through specific antibody fragments or mimotopes, enabling precise quantification. This innovative approach promises to reshape cholera toxin detection, offering an alternative to animal-derived methods. Harnessing engineered bacteriophages aligns with ethical detection and emphasizes sensitivity and accuracy, a pivotal stride in the evolution of detection strategies. This review primarily introduces recent advancements in phage display-based nano immunosensors for cholera toxin, encompassing technical aspects, current challenges, and future prospects.
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Affiliation(s)
- Yang Li
- General Surgery Center, First Hospital of Jilin University, Changchun, Jilin, China
- School of Nursing, Jilin University, Changchun, China
| | - Kai-di Yang
- School of Nursing, Jilin University, Changchun, China
| | - De-cai Kong
- General Surgery Center, First Hospital of Jilin University, Changchun, Jilin, China
| | - Jun-feng Ye
- General Surgery Center, First Hospital of Jilin University, Changchun, Jilin, China
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Kim Y, Lee D, Seo Y, Jung HG, Jang JW, Park D, Kim I, Kim J, Lee G, Hwang KS, Kim SH, Lee SW, Lee JH, Yoon DS. Caco-2 cell-derived biomimetic electrochemical biosensor for cholera toxin detection. Biosens Bioelectron 2023; 226:115105. [PMID: 36746024 DOI: 10.1016/j.bios.2023.115105] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Revised: 12/30/2022] [Accepted: 01/24/2023] [Indexed: 01/30/2023]
Abstract
Cholera is a highly contagious and lethal waterborne disease induced by an infection with Vibrio cholerae (V. cholerae) secreting cholera toxin (CTx). Cholera toxin subunit B (CTxB) from the CTx specifically binds with monosialo-tetra-hexosyl-ganglioside (GM1) found on the exterior cell membrane of an enterocyte. Bioinspired by the pathological process of CTx, we developed an electrochemical biosensor with GM1-expressing Caco-2 cell membrane (CCM) on the electrode surface. Briefly, the electrode surface was functionalized with CCM using the vesicle fusion method. We determined the CTxB detection performances of Caco-2 cell membrane-coated biosensor (CCB) using electrochemical impedance spectroscopy (EIS). the CCB had an excellent limit of detection of ∼11.46 nM and a detection range spanning 100 ng/mL - 1 mg/mL. In addition, the CCB showed high selectivity against various interfering molecules, including abundant constituents of intestinal fluid and various bacterial toxins. The long-term stability of the CCBs was also verified for 3 weeks using EIS. Overall, the CCB has excellent potential for practical use such as point-of-care and cost-effective testing for CTxB detection in developing countries.
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Affiliation(s)
- Yonghwan Kim
- School of Biomedical Engineering, Korea University, Seoul, 02841, South Korea; Interdisciplinary Program in Precision Public Health, Korea University, Seoul, 02841, South Korea
| | - Dongtak Lee
- School of Biomedical Engineering, Korea University, Seoul, 02841, South Korea; Center for Nanomedicine, Department of Anesthesiology, Perioperative and Pain Medicine, Brigham and Women's Hospital, Boston, MA, 02115, USA; Harvard Medical School, Boston, MA, 02115, USA
| | - Youngjun Seo
- School of Biomedical Engineering, Korea University, Seoul, 02841, South Korea; Interdisciplinary Program in Precision Public Health, Korea University, Seoul, 02841, South Korea
| | - Hyo Gi Jung
- School of Biomedical Engineering, Korea University, Seoul, 02841, South Korea; Interdisciplinary Program in Precision Public Health, Korea University, Seoul, 02841, South Korea
| | - Jae Won Jang
- School of Biomedical Engineering, Korea University, Seoul, 02841, South Korea; Interdisciplinary Program in Precision Public Health, Korea University, Seoul, 02841, South Korea
| | - Dongsung Park
- School of Biomedical Engineering, Korea University, Seoul, 02841, South Korea; Department of Clinical Pharmacology and Therapeutics, College of Medicine, Kyung Hee University, Seoul, 02447, South Korea
| | - Insu Kim
- School of Biomedical Engineering, Korea University, Seoul, 02841, South Korea
| | - Jaeheung Kim
- School of Biomedical Engineering, Korea University, Seoul, 02841, South Korea; Interdisciplinary Program in Precision Public Health, Korea University, Seoul, 02841, South Korea
| | - Gyudo Lee
- Department of Biotechnology and Bioinformatics, Korea University, Sejong, 30019, South Korea; Interdisciplinary Graduate Program for Artificial Intelligence Smart Convergence Technology, Korea University, Sejong, 30019, South Korea
| | - Kyo Seon Hwang
- Department of Clinical Pharmacology and Therapeutics, College of Medicine, Kyung Hee University, Seoul, 02447, South Korea
| | - Seung-Hyun Kim
- School of Engineering, Brown University, Providence, RI, 02912, USA
| | - Sang Won Lee
- School of Biomedical Engineering, Korea University, Seoul, 02841, South Korea; Department of Electrical Engineering and Computer Science, University of California, Irvine, CA, 92697, USA.
| | - Jeong Hoon Lee
- Department of Electrical Engineering, Kwangwoon University, Seoul, 01897, South Korea.
| | - Dae Sung Yoon
- School of Biomedical Engineering, Korea University, Seoul, 02841, South Korea; Interdisciplinary Program in Precision Public Health, Korea University, Seoul, 02841, South Korea; Astrion Inc, Seoul, 02841, South Korea.
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Sohrabi H, Majidi MR, Fakhraei M, Jahanban-Esfahlan A, Hejazi M, Oroojalian F, Baradaran B, Tohidast M, Guardia MDL, Mokhtarzadeh A. Lateral flow assays (LFA) for detection of pathogenic bacteria: A small point-of-care platform for diagnosis of human infectious diseases. Talanta 2022; 243:123330. [DOI: 10.1016/j.talanta.2022.123330] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Revised: 02/17/2022] [Accepted: 02/19/2022] [Indexed: 12/31/2022]
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Seherler S, Bozdogan A, Ozal Ildeniz TA, Kok FN, Anac Sakir I. Detection of cholera toxin with surface plasmon field-enhanced fluorescent spectroscopy. Biotechnol Appl Biochem 2021; 69:1557-1566. [PMID: 34297408 DOI: 10.1002/bab.2227] [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: 01/18/2021] [Accepted: 07/20/2021] [Indexed: 11/10/2022]
Abstract
In this work, a biosensor based on surface plasmon field-enhanced florescence spectroscopy (SPFS) method was successfully constructed to detect the truncated form of cholera toxin, that is, its beta subunit (CTX-B). CTX-B is a relatively small molecule (12 kDa) and it was chosen as model analyte for the detection of protein toxins originated from waterborne pathogens. Recognition layer was prepared on gold-coated LaSFN9 glasses modified with 11-mercaptoundecanoic acid (11-MUA). Biotin-conjugated anti-CTX-B polyclonal antibody (B-Ab) was immobilized on streptavidin (SA) layer constructed on the 11-MUA-modified surface. CTX-B amount was determined with direct assay using B-Ab in surface plasmon resonance (SPR) mode and with sandwich assay in SPFS mode using Cy5-conjugated anti-CTX-B polyclonal antibody. Minimum detected CTX-B concentrations were 10 and 0.01 μg/ml with SPR and SPFS, respectively, showing the sensitivity of the SPFS system over the conventional one. The detection was done in 2-6 h, which was faster than both culture and polymerase chain reaction (PCR)-based methods. Stability tests were performed with SA-coated sensors (excluding B-Ab). In this form, the layer was stable after 30 days of storage in phosphate-buffered saline (PBS; 0.01 M, pH = 7.4) at +4°C. B-Ab layer was formed immediately on them before each measurement.
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Affiliation(s)
- Sebnem Seherler
- Molecular Biology-Genetics and Biotechnology Programme, Istanbul Technical University, Istanbul, Turkey
| | - Anil Bozdogan
- Department of Material Science and Engineering, Gebze Technical University, Kocaeli, Turkey.,Center for Electrochemical Surface Technology (CEST), Austrian Institute of Technology, Tulln, Austria
| | - Tugba Arzu Ozal Ildeniz
- Department of Medical Engineering, Faculty of Engineering, Acibadem Mehmet Ali Aydinlar University, Istanbul, Turkey
| | - Fatma Nese Kok
- Molecular Biology-Genetics and Biotechnology Programme, Istanbul Technical University, Istanbul, Turkey
| | - Ilke Anac Sakir
- Department of Material Science and Engineering, Gebze Technical University, Kocaeli, Turkey.,Institute of Biotechnology, Gebze Technical University, Kocaeli, Turkey
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Sensitive and rapid detection of cholera toxin subunit B using magnetic frequency mixing detection. PLoS One 2019; 14:e0219356. [PMID: 31276546 PMCID: PMC6611628 DOI: 10.1371/journal.pone.0219356] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2019] [Accepted: 06/23/2019] [Indexed: 12/19/2022] Open
Abstract
Cholera is a life-threatening disease caused by the cholera toxin (CT) as produced by some Vibrio cholerae serogroups. In this research we present a method which directly detects the toxin’s B subunit (CTB) in drinking water. For this purpose we performed a magnetic sandwich immunoassay inside a 3D immunofiltration column. We used two different commercially available antibodies to capture CTB and for binding to superparamagnetic beads. ELISA experiments were performed to select the antibody combination. The beads act as labels for the magnetic frequency mixing detection technique. We show that the limit of detection depends on the type of magnetic beads. A nonlinear Hill curve was fitted to the calibration measurements by means of a custom-written python software. We achieved a sensitive and rapid detection of CTB within a broad concentration range from 0.2 ng/ml to more than 700 ng/ml.
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Bang J, Park H, Choi WI, Sung D, Lee JH, Lee KY, Kim S. Sensitive detection of dengue virus NS1 by highly stable affibody-functionalized gold nanoparticles. NEW J CHEM 2018. [DOI: 10.1039/c8nj02244e] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The anti-NS1 affibody-functionalized gold nanoparticles based ELISA resulted in a 14.2-fold signal amplification performance for dengue NS1 detection.
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Affiliation(s)
- Jinho Bang
- Korea Institute of Ceramic Engineering and Technology
- Center for Convergence Bioceramic Materials
- Cheongjusi
- South Korea
- Department of Bioengineering
| | - Heesun Park
- Korea Institute of Ceramic Engineering and Technology
- Center for Convergence Bioceramic Materials
- Cheongjusi
- South Korea
| | - Won Il Choi
- Korea Institute of Ceramic Engineering and Technology
- Center for Convergence Bioceramic Materials
- Cheongjusi
- South Korea
| | - Daekyung Sung
- Korea Institute of Ceramic Engineering and Technology
- Center for Convergence Bioceramic Materials
- Cheongjusi
- South Korea
| | - Jin Hyung Lee
- Korea Institute of Ceramic Engineering and Technology
- Center for Convergence Bioceramic Materials
- Cheongjusi
- South Korea
| | - Kuen Yong Lee
- Department of Bioengineering
- Hanyang University
- Seoul
- South Korea
| | - Sunghyun Kim
- Korea Institute of Ceramic Engineering and Technology
- Center for Convergence Bioceramic Materials
- Cheongjusi
- South Korea
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Cecchini F, Fajs L, Cosnier S, Marks RS. Vibrio cholerae detection: Traditional assays, novel diagnostic techniques and biosensors. Trends Analyt Chem 2016. [DOI: 10.1016/j.trac.2016.01.017] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Karapetis S, Nikoleli GP, Siontorou CG, Nikolelis DP, Tzamtzis N, Psaroudakis N. Development of an Electrochemical Biosensor for the Rapid Detection of Cholera Toxin Based on Air Stable Lipid Films with Incorporated Ganglioside GM1 Using Graphene Electrodes. ELECTROANAL 2016. [DOI: 10.1002/elan.201501134] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Stephanos Karapetis
- Laboratory of Inorganic & Analytical Chemistry; School of Chemical Engineering, Dept 1, Chemical Sciences; National Technical University of Athens; 9 Iroon Polytechniou St. Athens 157 80 Greece
| | - Georgia-Paraskevi Nikoleli
- Laboratory of Inorganic & Analytical Chemistry; School of Chemical Engineering, Dept 1, Chemical Sciences; National Technical University of Athens; 9 Iroon Polytechniou St. Athens 157 80 Greece
| | - Christina G. Siontorou
- Laboratory of Simulation of Industrial Processes; Department of Industrial Management and Technology; School of Maritime and Industry; University of Piraeus
| | - Dimitrios P. Nikolelis
- Laboratory of Environmental Chemistry; Department of Chemistry; University of Athens; Panepistimiopolis-Kouponia GR-15771 Athens Greece
| | - Nikolaos Tzamtzis
- Laboratory of Inorganic & Analytical Chemistry; School of Chemical Engineering, Dept 1, Chemical Sciences; National Technical University of Athens; 9 Iroon Polytechniou St. Athens 157 80 Greece
| | - Nikolas Psaroudakis
- Laboratory of Inorganic Chemistry; Department of Chemistry; University of Athens; Panepistimiopolis-Kouponia GR-15771 Athens Greece
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Gordon VD, O'Halloran TJ, Shindell O. Membrane adhesion and the formation of heterogeneities: biology, biophysics, and biotechnology. Phys Chem Chem Phys 2015; 17:15522-33. [PMID: 25866854 PMCID: PMC4465551 DOI: 10.1039/c4cp05876c] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Membrane adhesion is essential to many vital biological processes. Sites of membrane adhesion are often associated with heterogeneities in the lipid and protein composition of the membrane. These heterogeneities are thought to play functional roles by facilitating interactions between proteins. However, the causal links between membrane adhesion and membrane heterogeneities are not known. Here we survey the state of the field and indicate what we think are understudied areas ripe for development.
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Affiliation(s)
- V D Gordon
- The University of Texas at Austin, Department of Physics and Center for Nonlinear Dynamics, 2515 Speedway, Stop C1610, Austin, Texas 78712-1199, USA.
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10
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Zhan L, Wu WB, Yang XX, Huang CZ. Gold nanoparticle-based enhanced ELISA for respiratory syncytial virus. NEW J CHEM 2014. [DOI: 10.1039/c4nj00253a] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
A highly sensitive colorimetric immunoassay for the detection of RSV by adopting AuNPs as multienzyme carriers was developed.
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Affiliation(s)
- Lei Zhan
- Key Laboratory on Luminescence and Real-Time Analytical Chemistry (Southwest University)
- Ministry of Education
- College of Chemistry and Chemical Engineering
- Southwest University
- Chongqing 400715, China
| | - Wen Bi Wu
- Key Laboratory on Luminescence and Real-Time Analytical Chemistry (Southwest University)
- Ministry of Education
- College of Chemistry and Chemical Engineering
- Southwest University
- Chongqing 400715, China
| | - Xiao Xi Yang
- College of Pharmaceutical Science
- Southwest University
- Chongqing 400716, China
| | - Cheng Zhi Huang
- Key Laboratory on Luminescence and Real-Time Analytical Chemistry (Southwest University)
- Ministry of Education
- College of Chemistry and Chemical Engineering
- Southwest University
- Chongqing 400715, China
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Quantitative detection of Vibrio cholera toxin by real-time and dynamic cytotoxicity monitoring. J Clin Microbiol 2013; 51:3968-74. [PMID: 24048535 DOI: 10.1128/jcm.01959-13] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
We report here the quantitative detection of Vibrio cholerae toxin (CT) in isolates and stool specimens by dynamic monitoring of the full course of CT-mediated cytotoxicity in a real-time cell analysis (RTCA) system. Four cell lines, including Y-1 mouse adrenal tumor cells, Chinese hamster ovary (CHO) cells, small intestine epithelial (FHs74Int) cells, and mouse adrenal gland (PC12-Adh) cells, were evaluated for their suitability for CT-induced cytotoxicity testing. Among them, the Y-1 line was demonstrated to be the most sensitive for CT-mediated cytotoxicity, with limits of detection of 7.0 pg/ml for purified CT and 0.11 ng/ml for spiked CT in pooled negative stool specimens. No CT-mediated cytotoxicity was observed for nontoxigenic V. cholerae, non-V. cholerae species, or non-V. cholerae enterotoxins. The CT-RTCA assay was further validated with 100 stool specimens consecutively collected from patients with diarrhea and 200 V. cholerae isolates recovered from patients and the environment, in comparison to a reference using three detection methods. The CT-RTCA assay had sensitivities and specificities of 97.5% and 100.0%, respectively, for V. cholerae isolates and 90.0% and 97.2% for stool specimens. For stool specimens spiked with CT concentrations ranging from 3.5 pg/ml to 1.8 ng/ml, the inoculation-to-detection time was 1.12 ± 0.38 h, and the values were inversely correlated with CT concentrations (ρ = -1; P = 0.01). The results indicate that the CT-RTCA assay with the Y-1 cell line provides a rapid and sensitive tool for the quantitative detection of CT activities in clinical specimens.
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Schmit VL, Martoglio R, Carron KT. Lab-on-a-Bubble Surface Enhanced Raman Indirect Immunoassay for Cholera. Anal Chem 2012; 84:4233-6. [DOI: 10.1021/ac300242k] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- V. L. Schmit
- University of Wyoming, Chemistry Department, 1000 East University
Avenue, Laramie, Wyoming
82071, United States
| | - R. Martoglio
- Department
of Chemistry and
Biochemistry, DePauw University, 602 South
College Avenue, Greencastle, Indiana 46135, United States
| | - K. T. Carron
- University of Wyoming, Chemistry Department, 1000 East University
Avenue, Laramie, Wyoming
82071, United States
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Nikoleli GP, Nikolelis DP, Tzamtzis N. Development of an Electrochemical Biosensor for the Rapid Detection of Cholera Toxin Using Air Stable Lipid Films with incorporated Ganglioside GM1. ELECTROANAL 2011. [DOI: 10.1002/elan.201100307] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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Kuramitz H, Miyagaki S, Ueno E, Hata N, Taguchi S, Sugawara K. Binding assay for cholera toxin based on sequestration electrochemistry using lactose labeled with an electroactive compound. Analyst 2011; 136:2373-8. [PMID: 21491033 DOI: 10.1039/c1an15100b] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A simple electrochemical binding assay for cholera toxin (CT) was developed using lactose labeled with daunomycin as an electroactive compound. The labeled lactose (LL) was determined with high sensitivity by adsorptive stripping voltammetry (AdSV). The electrochemical behaviors of LL at glassy carbon (GC), plastic formed carbon (PFC) and carbon nanotubes paste (CNTP) electrode were investigated. The CNTP electrode showed the greatest accumulation capacity for LL. The assay for CT based on the sequestration electrochemistry was demonstrated. The binding event of the LL to CT was detected by the decrease in the electrochemical response of daunomycin as an electroactive label without a separation process to remove the free LL from the one bound with CT before any measurements can be made. The detection limit of the CT assay using the CNTP electrode was 0.5 nM (42 ng mL(-1)).
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Affiliation(s)
- Hideki Kuramitz
- Department of Environmental Biology and Chemistry, Graduate School of Science and Engineering for Research, University of Toyama, Gofuku 3190, Toyama, 930-8555, Japan.
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Chiriacò MS, Primiceri E, D'Amone E, Ionescu RE, Rinaldi R, Maruccio G. EIS microfluidic chips for flow immunoassay and ultrasensitive cholera toxin detection. LAB ON A CHIP 2011; 11:658-663. [PMID: 21127822 DOI: 10.1039/c0lc00409j] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
A flow-injection impedimetric immunosensor for the sensitive, direct and label-free detection of cholera toxin is reported. A limit of detection smaller than 10 pM was achieved, a value thousands of times lower than the lethal dose. The developed chips fulfil the requirement of low cost and quick reply of the assay and are expected to enable field screening, prompt diagnosis and medical intervention without the need of specialized personnel and expensive equipment, a perspective of special relevance for use in developing countries. Since the chip layout includes two sensing areas each one with a 2 × 2 sensor array, our biochips can allow statistical or (alternatively) multiplex analysis of biorecognition events between antibodies immobilized on each working electrode and different antigens flowing into the chamber.
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17
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Nanoparticle-functionalized nucleic acids: A strategy for amplified electrochemical detection of some single-base mismatches. Electrochim Acta 2011. [DOI: 10.1016/j.electacta.2010.12.051] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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18
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Won A, Khan M, Gustin S, Akpawu A, Seebun D, Avis TJ, Leung BO, Hitchcock AP, Ianoul A. Investigating the effects of L- to D-amino acid substitution and deamidation on the activity and membrane interactions of antimicrobial peptide anoplin. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2010; 1808:1592-600. [PMID: 21078293 DOI: 10.1016/j.bbamem.2010.11.010] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2010] [Revised: 10/21/2010] [Accepted: 11/08/2010] [Indexed: 11/28/2022]
Abstract
Isolated from the venom sac of solitary spider wasp, Anoplius samariensis, anoplin is the smallest linear α-helical antimicrobial peptide found naturally with broad spectrum activity against both Gram-positive and Gram-negative bacteria, and little hemolytic activity toward human erythrocytes. Deamidation was found to decrease the peptide's antibacterial properties. In the present work, interactions of amidated (Ano-NH2) and deamidated (Ano-OH) forms of anoplin as well as Ano-NH2 composed of all D-amino acids (D-Ano-NH2) with model cell membranes were investigated by means of Langmuir Blodgett (LB) technique, atomic force microscopy (AFM), X-ray photoemission electron microscopy (X-PEEM) and carboxyfluorescein leakage assay in order to gain a better understanding of the effect of these peptide modifications on membrane binding and lytic properties. According to LB, all three peptides form stable monolayers at the air/water interface with Ano-NH2 occupying a slightly greater area per molecule than Ano-OH. All three forms of the peptide interact preferentially with anionic 1,2-dipalmitoyl-sn-glycero-3-[phospho-rac-(1-glycerol)] (DPPG), rather than zwitterionic 1,2-dipalmitoyl-sn-glycero-3-phosphocholine (DPPC) lipid monolayer. Peptides form nanoscale clusters in zwitterionic but not in anionic monolayers. Finally, membrane lytic activity of all derivatives was found to depend strongly on membrane composition and lipid/peptide ratio. The results suggest that amidated forms of peptides are likely to possess higher membrane binding affinity due to the increased charge.
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Affiliation(s)
- Amy Won
- Department of Chemistry, Carleton University, 1125 Colonel By Dr. Ottawa, ON, Canada
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Edwards KA, Wang Y, Baeumner AJ. Aptamer sandwich assays: human α-thrombin detection using liposome enhancement. Anal Bioanal Chem 2010; 398:2645-54. [PMID: 20596697 DOI: 10.1007/s00216-010-3920-4] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2010] [Revised: 04/27/2010] [Accepted: 06/13/2010] [Indexed: 11/25/2022]
Abstract
Fluorescent dye-encapsulating liposomes tagged with aptamers were developed and used as reporting signals in an aptamer-based sandwich assay. α-Thrombin was utilized as a prototypical analyte as two well-studied aptamers binding distinct epitopes are available to form a sandwich complex. Cholesteryl-TEG-modified aptamers were embedded into the liposomal lipid bilayer while the interior cavity of the liposomes encapsulated fluorescent sulforhodamine B dye. Such liposomes successfully formed a sandwich complex with α-thrombin and a microtiter plate immobilized aptamer, proving that aptamers retain their ability to fold when anchored to the liposome surface. Parameters studied included liposomal aptamer coverage, sandwich aptamer orientation, aptamer label orientation, aptamer spacer length and type, incubation buffer, and aptamer concentration. The optimized conditions found here in the fluorescence assay led to a limit of detection of 64 pM or 2.35 ng/mL, corresponding to 6.4 fmol or 235 pg, respectively, in a 100 μL volume. This is an order of magnitude lower than previous sandwich aptamer assays using the same sequences with lowest reported limits of detection of 0.45 nM. In addition, the assay was applied successfully to the detection of α-thrombin in human plasma. The success of this method in a standard microtiter plate format and the relatively facile functionalization of liposomes with aptamers suggest that this approach provides a versatile option for routine analytical applications.
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Affiliation(s)
- Katie A Edwards
- Department of Biological & Environmental Engineering, Cornell University, 318 Riley-Robb Hall, Ithaca, NY 14853, USA
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20
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Determination of sialic acid and gangliosides in biological samples and dairy products: A review. J Pharm Biomed Anal 2010; 51:346-57. [DOI: 10.1016/j.jpba.2009.04.023] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2009] [Revised: 04/17/2009] [Accepted: 04/23/2009] [Indexed: 11/20/2022]
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Interactions of antimicrobial peptide from C-terminus of myotoxin II with phospholipid mono- and bilayers. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2009; 1788:2277-83. [DOI: 10.1016/j.bbamem.2009.07.012] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2009] [Revised: 07/10/2009] [Accepted: 07/17/2009] [Indexed: 11/24/2022]
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22
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Bally M, Vörös J. Nanoscale labels: nanoparticles and liposomes in the development of high-performance biosensors. Nanomedicine (Lond) 2009; 4:447-67. [DOI: 10.2217/nnm.09.16] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Technology for the detection of biological species has generated considerable interest in a variety of fields including healthcare, defense, food and environmental monitoring. In a biosensor, labeled specific binding partners are used to emit a detectable signal. Owing to their unique properties, nanomaterials have been proposed as a novel label category and have led to the development of new assays and new transduction mechanisms. In this article, the role of three major types of nanoscale labels (metallic, semiconductor and liposome nanoparticles) in the development of a new generation of optical, electrochemical or gravimetric biosensors will be presented. The underlying transduction principles will be briefly explained and assay strategies relying on the use of these ‘nanolabels’ will be described. The contribution to increased assay performance and sensitivity will be highlighted. Approaches towards simple, cost efficient and sensitive assays are essential to meet the demands of a growing number of applications.
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Affiliation(s)
- Marta Bally
- Laboratory of Biosensors & Bioelectronics, Institute for Biomedical Engineering, ETH and University Zurich, Gloriastr. 35, 8092 Zurich, Switzerland
| | - Janos Vörös
- Laboratory of Biosensors & Bioelectronics, Institute for Biomedical Engineering, ETH and University Zurich, Gloriastr. 35, 8092 Zurich, Switzerland
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23
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Cholera toxin subunit B detection in microfluidic devices. Anal Bioanal Chem 2008; 393:177-86. [DOI: 10.1007/s00216-008-2364-6] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2008] [Revised: 08/18/2008] [Accepted: 08/20/2008] [Indexed: 11/26/2022]
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24
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Duan F, March JC. InterruptingVibrio choleraeinfection of human epithelial cells with engineered commensal bacterial signaling. Biotechnol Bioeng 2008; 101:128-34. [DOI: 10.1002/bit.21897] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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25
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Edwards KA, Duan F, Baeumner AJ, March JC. Fluorescently labeled liposomes for monitoring cholera toxin binding to epithelial cells. Anal Biochem 2008; 380:59-67. [DOI: 10.1016/j.ab.2008.05.027] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2008] [Accepted: 05/18/2008] [Indexed: 11/16/2022]
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26
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Chen H, Zheng Y, Jiang JH, Wu HL, Shen GL, Yu RQ. An ultrasensitive chemiluminescence biosensor for cholera toxin based on ganglioside-functionalized supported lipid membrane and liposome. Biosens Bioelectron 2008; 24:684-9. [PMID: 18672355 DOI: 10.1016/j.bios.2008.06.031] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2008] [Revised: 06/15/2008] [Accepted: 06/16/2008] [Indexed: 11/30/2022]
Abstract
A novel chemiluminescence biosensor based on a supported lipid layer incorporated with ganglioside GM1 was developed for the detection of cholera toxin. The planar supported lipid membrane was prepared as biosensing interface via spontaneous spread of ganglioside-incorporated phospholipid vesicles on the octadecanethiol-coated gold surface. The specific interaction of multivalent CT by ganglioside GM1 molecules enables the biosensor to be implemented via a sandwiched format using a liposome probe functionalized with GM1 and horseradish peroxidase (HRP). Then, the presence of the target CT could be determined via the HRP-catalyzed enhanced chemiluminescence reaction. The developed strategy offers several unique advantages over conventional biosensors in that it allows for an easy construction and renewal of the sensing interface, a small background signal due to low non-specific adsorption of serum constituents on the lipid membrane, and effective immobilization of multiple biocatalytic amplifiers and recognition components via common phospholipid reagents. The developed biosensor was shown to give chemiluminescence signal in linear correlation to CT concentration within the range from 1pgmL(-1) to 1ngmL(-1) with readily achievable detection limit of 0.8pgmL(-1).
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Affiliation(s)
- Huan Chen
- State Key Laboratory for Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, PR China
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27
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Williams TL, Jenkins ATA. Measurement of the Binding of Cholera Toxin to GM1 Gangliosides on Solid Supported Lipid Bilayer Vesicles and Inhibition by Europium (III) Chloride. J Am Chem Soc 2008; 130:6438-43. [DOI: 10.1021/ja710543x] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Thomas L. Williams
- Department of Chemistry, University of Bath, Bath, BA2 7AY, United Kingdom
| | - A. Toby A. Jenkins
- Department of Chemistry, University of Bath, Bath, BA2 7AY, United Kingdom
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28
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Universal liposomes: preparation and usage for the detection of mRNA. Anal Bioanal Chem 2008; 391:1689-702. [DOI: 10.1007/s00216-008-1992-1] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2007] [Revised: 01/22/2008] [Accepted: 02/18/2008] [Indexed: 10/22/2022]
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