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Ghaleh HEG, Shahriary A, Izadi M, Farzanehpour M. Advances in early diagnosis of cervical cancer based on biosensors. Biotechnol Bioeng 2022; 119:2305-2312. [DOI: 10.1002/bit.28149] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Revised: 04/18/2022] [Accepted: 05/19/2022] [Indexed: 11/07/2022]
Affiliation(s)
| | - Alireza Shahriary
- Chemical Injuries Research Center, Systems biology and poisonings instituteBaqiyatallah University of Medical SciencesTehranIran
| | - Morteza Izadi
- Health Research CenterBaqiyatallah University of Medical SciencesTehranIran
| | - Mahdieh Farzanehpour
- Applied Virology Research CenterBaqiyatallah University of Medical sciencesTehranIran
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Mahmoodi P, Fani M, Rezayi M, Avan A, Pasdar Z, Karimi E, Amiri IS, Ghayour-Mobarhan M. Early detection of cervical cancer based on high-risk HPV DNA-based genosensors: A systematic review. Biofactors 2019; 45:101-117. [PMID: 30496635 DOI: 10.1002/biof.1465] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/02/2018] [Revised: 09/15/2018] [Accepted: 09/23/2018] [Indexed: 12/22/2022]
Abstract
Human papillomavirus type (HPV) is a common cause of sexually transmitted disease (STD) in humans. HPV types 16 and 18 as the highest risk types are related with gynecologic malignancy and cervical cancer (CC) among women worldwide. Recently, considerable development of genosensors, which allows dynamic monitoring of hybridization events for HPV-16 and 18, has been a topic of focus by many researchers. In this systematic review, we highlight the route of development of DNA-based genosensory detection methods for diagnosis of high risk of HPV precancer. Biosensor detection methods of HPV-16 and 18 was investigated from 1994 to 2018 using several databases including PubMed, Cochrane Library, Scopus, Google Scholar, SID, and Scientific Information Database. Manual search of references of retrieved articles were also performed. A total of 50 studies were reviewed. By analyzing the most recent developed electrochemical biosensors for the identification of HPV, we observed that the sensor platform fabricated by Wang et al. holds the lowest detection limit reported in the literature for the DNA of HPV-16. Up to this date, optical, electrochemical, and piezoelectric systems are the main transducers used in the development of biosensors. Among the most sensitive techniques available to study the biorecognition activity of the sensors, we highlight the biosensors based fluorescent, EIS, and QCM. The current systematic review focuses on the sensory diagnostic methods that are being used to detect HPV-16 and 18 worldwide. Special emphasis is given on the sensory techniques that can diagnosis the individuals with CC. © 2018 BioFactors, 45(2):101-117, 2019.
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Affiliation(s)
- Pegah Mahmoodi
- Department of Biology, Faculty of Science, Mashhad Branch, Islamic Azad University, Mashhad, Iran
| | - Mona Fani
- Virology Department, School of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Majid Rezayi
- Medical Toxicology Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
- Department of Modern Sciences and Technologies, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Amir Avan
- Department of Modern Sciences and Technologies, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Zahra Pasdar
- Medical School, University of Aberdeen, Aberdeen, UK
| | - Ehsan Karimi
- Department of Biology, Faculty of Science, Mashhad Branch, Islamic Azad University, Mashhad, Iran
| | - Iraj S Amiri
- Computational Optics Research Group, Advanced Institute of Materials Science, Ton Duc Thang University, Ho Chi Minh City, Vietnam
- Faculty of Applied Sciences, Ton Duc Thang University, Ho Chi Minh City, Vietnam
| | - Majid Ghayour-Mobarhan
- Department of Modern Sciences and Technologies, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
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Shamsipur M, Nasirian V, Mansouri K, Barati A, Veisi-Raygani A, Kashanian S. A highly sensitive quantum dots-DNA nanobiosensor based on fluorescence resonance energy transfer for rapid detection of nanomolar amounts of human papillomavirus 18. J Pharm Biomed Anal 2017; 136:140-147. [PMID: 28081500 DOI: 10.1016/j.jpba.2017.01.002] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2016] [Revised: 12/23/2016] [Accepted: 01/02/2017] [Indexed: 11/30/2022]
Abstract
A very sensitive and convenient nanobiosensor based on fluorescence resonance energy transfer (FRET) was developed for the detection of a 22-mer oligonucleotides sequence in Human Papillomavirus 18 virus (HPV18) gene. For this purpose, water-soluble CdTe quantum dots (QDs) were synthesized and, subsequently, amino-modified 11-mer oligonucleotide as one of the two necessary probes was attached to QDs surface to form functional QDs-DNA conjugates. Right after addition of the QDs-DNA and a second Cyanine5 (Cy5)-labeled 11-mer oligonucleotide probe to the DNA target solution, the sandwiched hybrids were formed. The resulting hybridization brings the Cy5 fluorophore as the acceptor to close proximity of the QDs as donor, so that an effective transfer of energy from the excited QDs to the Cy5 probe would occur via FRET processing. The fluorescence intensity of Cy5 found to linearly enhance by increasing the DNA target concentration from 1.0 to 50.0nM, with a detection limit of 0.2nM. This homogeneous DNA detection method does not require excessive washing and separation steps of un-hybridized DNA, due to the fact that no FRET can be observed when the probes are not ligated. Finally, feasibility and selectivity of the proposed one-spot DNA detection nanobiosensor were investigated by analysis of derived nucleotides from HPV18 and mismatched sequences.
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Affiliation(s)
| | - Vahid Nasirian
- Department of Chemistry, Razi University, Kermanshah, Iran
| | - Kamran Mansouri
- Medical Biology Research Center, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Ali Barati
- Department of Chemistry, Razi University, Kermanshah, Iran
| | - Asad Veisi-Raygani
- Department of Biochemistry, School of Medicine, Kermanshah University of Medical Sciences, Kermanshah, Iran
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4
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Lee S, Chakkarapani SK, Yeung ES, Kang SH. Direct quantitative screening of influenza A virus without DNA amplification by single-particle dual-mode total internal reflection scattering. Biosens Bioelectron 2017; 87:842-849. [DOI: 10.1016/j.bios.2016.09.019] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2016] [Revised: 08/25/2016] [Accepted: 09/05/2016] [Indexed: 01/10/2023]
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Hao J, Xiong B, Cheng X, He Y, Yeung ES. High-throughput sulfide sensing with colorimetric analysis of single Au-Ag core-shell nanoparticles. Anal Chem 2014; 86:4663-7. [PMID: 24809220 DOI: 10.1021/ac500376e] [Citation(s) in RCA: 97] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
We present a high-throughput strategy for sensitive detection of H2S by using individual spherical Au-Ag core-shell plasmonic nanoparticles (PNPs) as molecular probes. This method is based on quantification of color variation of the single PNPs resulting from formation of Ag2S on the particle surface. The spectral response range of the 51 nm PNP was specifically designed to match the most sensitive region of color cameras. A high density of immobilized PNPs and rapid color RGB (red/green/blue) analysis allow a large number of individual PNPs to be monitored simultaneously, leading to reliable quantification of color change of the PNPs. A linear logarithmic dependence on sulfide concentrations from 50 nM to 100 μM was demonstrated by using this colorimetric assay. By designing PNPs with various surface chemistries, similar strategies could be developed to detect other chemically or biologically important molecules.
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Affiliation(s)
- Jinrui Hao
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, College of Biology, Hunan University , Changsha, Hunan 410082, P. R. China
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6
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Liu J, Yang X, Wang K, Wang Q, Liu W, Wang D. Solid-phase single molecule biosensing using dual-color colocalization of fluorescent quantum dot nanoprobes. NANOSCALE 2013; 5:11257-11264. [PMID: 24089289 DOI: 10.1039/c3nr03291d] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
The development of solid-phase surface-based single molecule imaging technology has attracted significant interest during the past decades. Here we demonstrate a sandwich hybridization method for highly sensitive detection of a single thrombin protein at a solid-phase surface based on the use of dual-color colocalization of fluorescent quantum dot (QD) nanoprobes. Green QD560-modified thrombin binding aptamer I (QD560-TBA I) were deposited on a positive poly(l-lysine) assembled layer, followed by bovine serum albumin blocking. It allowed the thrombin protein to mediate the binding of the easily detectable red QD650-modified thrombin binding aptamer II (QD650-TBA II) to the QD560-TBA I substrate. Thus, the presence of the target thrombin can be determined based on fluorescent colocalization measurements of the nanoassemblies, without target amplification or probe separation. The detection limit of this assay reached 0.8 pM. This fluorescent colocalization assay has enabled single molecule recognition in a separation-free detection format, and can serve as a sensitive biosensing platform that greatly suppresses the nonspecific adsorption false-positive signal. This method can be extended to other areas such as multiplexed immunoassay, single cell analysis, and real time biomolecule interaction studies.
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Affiliation(s)
- Jianbo Liu
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Key Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan Province, Hunan University, Changsha 410082, P. R. China.
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7
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Piro B, Kapella A, Le V, Anquetin G, Zhang Q, Reisberg S, Noel V, Tran L, Duc H, Pham M. Towards the detection of human papillomavirus infection by a reagentless electrochemical peptide biosensor. Electrochim Acta 2011. [DOI: 10.1016/j.electacta.2011.04.094] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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8
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Specific magnetic isolation for direct detection of HPV16. Eur J Clin Microbiol Infect Dis 2011; 31:539-46. [DOI: 10.1007/s10096-011-1345-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2011] [Accepted: 07/05/2011] [Indexed: 10/17/2022]
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9
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Chan HM, Chan LS, Wong RNS, Li HW. Direct quantification of single-molecules of microRNA by total internal reflection fluorescence microscopy. Anal Chem 2010; 82:6911-8. [PMID: 20704380 DOI: 10.1021/ac101133x] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
MicroRNAs (miRNAs) express differently in normal and cancerous tissues and thus are regarded as potent cancer biomarkers for early diagnosis. However, the short length and low abundance of miRNAs have brought challenges to the established detection assay in terms of sensitivity and selectivity. In this work, we present a novel miRNA detection assay in single-molecule level with total internal reflection fluorescence microscopy (TIRFM). It is a solution-based hybridization detection system that does not require pretreatment steps such as sample enrichment or signal amplification. The hsa-miR-21 (miR-21) is chosen as target miRNA for its significant elevated content in a variety of cancers as reported previously. Herein, probes of complementary single-stranded oligonucleotide were hybridized in solution to miR-21 and labeled with fluorescent dye YOYO-1. The fluorescent hybrids were imaged by an electron-multiplying charge-coupled device (EMCCD) coupled TIRFM system and quantified by single-molecule counting. This single molecule detection (SMD) assay shows a good correlation between the number of molecules detected and the factual concentration of miRNA. The detection assay is applied to quantify the miR-21 in extracted total RNA samples of cancerous MCF-7 cells, HepG2 cells, and normal HUVEC cells, respectively. The results agreed very well with those from the prevalent real-time polymerase chain reaction (qRT-PCR) analysis. This assay is of high potential for applications in miRNA expression profiling and early cancer diagnosis.
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Affiliation(s)
- Ho-Man Chan
- Department of Chemistry, Hong Kong Baptist University, Kowloon Tong, Hong Kong, P.R. China
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10
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Cheng J, Liu Y, Cheng X, He Y, Yeung ES. Real Time Observation of Chemical Reactions of Individual Metal Nanoparticles with High-Throughput Single Molecule Spectral Microscopy. Anal Chem 2010; 82:8744-9. [DOI: 10.1021/ac101933y] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Jing Cheng
- Biomedical Engineering Center, College of Chemistry and Chemical Engineering, State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha 410082, People’s Republic of China
| | - Yang Liu
- Biomedical Engineering Center, College of Chemistry and Chemical Engineering, State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha 410082, People’s Republic of China
| | - Xiaodong Cheng
- Biomedical Engineering Center, College of Chemistry and Chemical Engineering, State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha 410082, People’s Republic of China
| | - Yan He
- Biomedical Engineering Center, College of Chemistry and Chemical Engineering, State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha 410082, People’s Republic of China
| | - Edward S. Yeung
- Biomedical Engineering Center, College of Chemistry and Chemical Engineering, State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha 410082, People’s Republic of China
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11
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Xiao L, Wei L, He Y, Yeung ES. Single Molecule Biosensing Using Color Coded Plasmon Resonant Metal Nanoparticles. Anal Chem 2010; 82:6308-14. [DOI: 10.1021/ac101018v] [Citation(s) in RCA: 75] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Lehui Xiao
- Biomedical Engineering Center, College of Chemistry and Chemical Engineering, State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha 410082, People’s Republic of China
| | - Lin Wei
- Biomedical Engineering Center, College of Chemistry and Chemical Engineering, State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha 410082, People’s Republic of China
| | - Yan He
- Biomedical Engineering Center, College of Chemistry and Chemical Engineering, State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha 410082, People’s Republic of China
| | - Edward S. Yeung
- Biomedical Engineering Center, College of Chemistry and Chemical Engineering, State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha 410082, People’s Republic of China
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12
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Ma C, Yeung ES. Highly sensitive detection of DNA phosphorylation by counting single nanoparticles. Anal Bioanal Chem 2010; 397:2279-84. [DOI: 10.1007/s00216-010-3801-x] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2010] [Revised: 04/26/2010] [Accepted: 04/27/2010] [Indexed: 12/21/2022]
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13
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Zhang C, Xing D. Single-Molecule DNA Amplification and Analysis Using Microfluidics. Chem Rev 2010; 110:4910-47. [DOI: 10.1021/cr900081z] [Citation(s) in RCA: 115] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Chunsun Zhang
- MOE Key Laboratory of Laser Life Science & Institute of Laser Life Science, College of Biophotonics, South China Normal University, Guangzhou 510631, China
| | - Da Xing
- MOE Key Laboratory of Laser Life Science & Institute of Laser Life Science, College of Biophotonics, South China Normal University, Guangzhou 510631, China
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Piao JY, Park EH, Choi K, Quan B, Kang DH, Park PY, Kim DS, Chung DS. Direct visual detection of DNA based on the light scattering of silica nanoparticles on a human papillomavirus DNA chip. Talanta 2009; 80:967-73. [PMID: 19836580 DOI: 10.1016/j.talanta.2009.08.024] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2009] [Revised: 08/17/2009] [Accepted: 08/19/2009] [Indexed: 10/20/2022]
Abstract
A detection system for a human papillomavirus (HPV) DNA chip based on the light scattering of aggregated silica nanoparticle probes is presented. In the assay, a target HPV DNA is sandwiched between the capture DNA immobilized on the chip and the probe DNA immobilized on the plain silica nanoparticle. The spot where the sandwich reaction occurs appears bright white and is readily distinguishable to the naked eye. Scanning electron microscopy images clearly show the aggregation of the silica nanoparticle probes. When three different sized (55 nm, 137 nm, 286 nm) plain silica nanoparticles were compared, probes of the larger silica nanoparticles showed a higher scattering intensity. Using 286-nm silica nanoparticles, the spots obtained with 200 pM of target DNA were visually detectable. The demonstrated capability to detect a disease related target DNA with direct visualization without using a complex detection instrument provides the prerequisite for the development of portable testing kits for genotyping.
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Affiliation(s)
- Jing Yu Piao
- Department of Chemistry, Seoul National University, Seoul, Republic of Korea
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Liang H, Cheng X, Ma Y. Localized single molecule isotherms of DNA molecules at confined liquid-solid interfaces. Anal Chem 2009; 81:2059-66. [PMID: 19222225 DOI: 10.1021/ac801800u] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The study of dynamics and thermodynamics of single biological molecules at confined liquid-solid interfaces is crucially important, especially in the case of low-copy number molecules in a single cell. Using a high-throughput single molecule imaging system and Lagrangian coordinates of single molecule images, we discovered that the local equilibrium isotherms of single lambdaDNA molecules at a confined liquid-solid interface varied from a stair type for the regions of single or double molecular DNA to a mild "S" type for the regions of triple molecular DNA spots, which does not agree with the conventional equilibrium isotherms in the literature. Single molecule images in time sequence for different lambdaDNA concentrations were statistically analyzed by measuring preferential partitioning from shearing effects, which were used to measure the local velocity of DNA molecules by directly observing the migration of DNA fluorescence spots for the 12 continuous images. The local linear velocity of hydrodynamic flow was calculated by the Hagen-Poiseuille equation in different microregions with a local Lagrangian approach. The local single molecule isotherms for the tracked molecules in the regions of single, double, or triple molecular DNA layers within the laminar flows were obtained according to the average local velocities of both the stochastic molecule events and the corresponding local Poiseuille flows. A millisecond and microvolume approach to directly determine local single molecule isotherms at confined liquid-solid interfaces was established, and the microspace scale effects on the types of isotherms were discovered. This study may have significant impact on preparations of low-copy number proteins in a single cell, membrane separations, and other bioseparation studies.
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Affiliation(s)
- Heng Liang
- Department of Chemistry and Environmental Research Center, Missouri University of Science and Technology, Rolla, Missouri 65409, USA
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Single-molecule immunosorbent assay as a tool for human immunodeficiency virus-1 antigen detection. Anal Bioanal Chem 2009; 394:489-97. [PMID: 19267241 DOI: 10.1007/s00216-009-2712-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2009] [Revised: 02/13/2009] [Accepted: 02/16/2009] [Indexed: 10/21/2022]
Abstract
Ultrasensitive detection and quantification of viral antigen with a novel single-molecule immunosorbent assay (SMISA) was achieved. Antigen from human immunodeficiency virus type 1 (HIV-1), the major etiological agent of acquired immune deficiency syndrome, served as the screening target in this study. The target molecule was sandwiched between a polyclonal capture antibody and a monoclonal detector antibody. The capture antibody was covalently immobilized on (3-glycidoxypropyl) trimethoxy silane-modified glass slides. The detector antibody was conjugated with fluorescent Alexa Fluor 532 labeled secondary antibody prior to being used as a probe for the antigen. Imaging was performed with a total internal reflection fluorescence single-molecule detection system. This technique is demonstrated for detecting HIV-1 p24 antigen down to 0.1 pg/mL with a dynamic range of over four orders of magnitude. A Langmuir isotherm fits the molecule count dependence on the target concentration. The target antigen was further tested in 20% human serum, and the results showed that neither sensitivity nor dynamic range was affected by the biological matrix. SMISA is therefore a promising approach for the early diagnosis of viral induced diseases.
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Quantitative detection of antibody based on single-molecule counting by total internal reflection fluorescence microscopy with quantum dot labeling. Anal Chim Acta 2009; 634:83-8. [DOI: 10.1016/j.aca.2008.11.063] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2008] [Revised: 11/25/2008] [Accepted: 11/26/2008] [Indexed: 11/19/2022]
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18
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Spectral imaging of single molecules by transmission grating-based epi-fluorescence microscopy. Anal Chim Acta 2008; 619:209-14. [DOI: 10.1016/j.aca.2008.05.017] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2008] [Revised: 05/05/2008] [Accepted: 05/07/2008] [Indexed: 11/20/2022]
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19
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Baek TJ, Park PY, Han KN, Kwon HT, Seong GH. Development of a photodiode array biochip using a bipolar semiconductor and its application to detection of human papilloma virus. Anal Bioanal Chem 2008; 390:1373-8. [DOI: 10.1007/s00216-007-1814-x] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2007] [Revised: 12/07/2007] [Accepted: 12/12/2007] [Indexed: 12/28/2022]
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Dell'Atti D, Zavaglia M, Tombelli S, Bertacca G, Cavazzana AO, Bevilacqua G, Minunni M, Mascini M. Development of combined DNA-based piezoelectric biosensors for the simultaneous detection and genotyping of high risk Human Papilloma Virus strains. Clin Chim Acta 2007; 383:140-6. [PMID: 17573061 DOI: 10.1016/j.cca.2007.05.009] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2007] [Revised: 05/11/2007] [Accepted: 05/11/2007] [Indexed: 11/30/2022]
Abstract
BACKGROUND Human Papilloma Virus (HPV) is a DNA virus belonging to the Papovavirus family. Genital HPV types have been subdivided into medium-low risk, and high-risk (HPV 16 and 18), frequently associated with cervical cancer. Three DNA-based piezoelectric biosensors were here developed for a quick detection and genotyping of HPV. METHODS We developed a method for the detection and genotyping of HPV in human cervical scraping samples based on coupling DNA piezoelectric sensors with Polymerase Chain Reaction (PCR). The novelty of this work was the design and immobilisation of a degenerate probe (chosen in a conserved region of the viral genome) for the simultaneous detection of 16 virus strains and of two specific probes (chosen in a less-conserved region of the viral genome) for genotyping. RESULTS The three biosensors were optimised with synthetic oligonucleotides with good reproducibility (HPVdeg CV% (av) 9%, HPV16 CV%(av) 9%; HPV18 CV%(av) 11%) with a detection limit of 50 nM. Cervical scraping samples after PCR amplification (in 40-200 nM range), were tested without the need of label with high selectivity and reproducibility. The results were in agreement with a reference method used in routinary analysis. CONCLUSION Piezoelectric biosensors have proven to be suitable for detection and genotyping of HPV.
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Affiliation(s)
- Daniela Dell'Atti
- Department of Chemistry, University of Florence, Via della Lastruccia 3, 50019, Sesto Fiorentino, Italy
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