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A meta-analysis of circulating microRNAs in the diagnosis of papillary thyroid carcinoma. PLoS One 2021; 16:e0251676. [PMID: 34019567 PMCID: PMC8139519 DOI: 10.1371/journal.pone.0251676] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Accepted: 04/29/2021] [Indexed: 01/09/2023] Open
Abstract
Background Aim of this meta-analysis was to evaluate the overall diagnostic value of circulating mini miRNAs for papillary thyroid carcinoma (PTC) and to find the possible molecular marker with higher diagnostic value for PTC. Methods We searched the Pubmed, Cochrane and Embase database until June 2020. We selected relevant literatures associated with the diagnosis of PTC with circulating miRNAs. The number of cases in experimental group and the control group, sensitivity and specificity could be extracted from the literatures. Results We got 9 literatures including 2114 cases of PTC. Comprehensive sensitivity was 0.79, comprehensive specificity was 0.82, positive likelihood ratio was 4.3, negative likelihood ratio was 0.26, diagnostic advantage ratio was 16. The summary receiver operating characteristic curve was drawn and the Area Under the Curve was 0.87. Conclusions Circulating microRNAs may be promising molecular markers for the diagnosis of papillary thyroid carcinoma. Combined detection of certain serum microRNAs can improve the diagnostic accuracy of papillary thyroid carcinoma. Especially MiR-222 and miR-146b may be prime candidates for the diagnosis of PTC in Asian population.
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Methodological aspects of Universal immuno-PCR on standard tubes. Anal Biochem 2019; 570:56-61. [DOI: 10.1016/j.ab.2019.02.007] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Revised: 02/09/2019] [Accepted: 02/11/2019] [Indexed: 11/20/2022]
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Su Y, Li W, Huang Z, Wang R, Luo W, Liu Q, Tong J, Xiao L. Sensitive and high throughput quantification of abscisic acid based on quantitative real time immuno-PCR. PLANT METHODS 2018; 14:104. [PMID: 30534191 PMCID: PMC6260876 DOI: 10.1186/s13007-018-0371-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/24/2018] [Accepted: 11/19/2018] [Indexed: 06/09/2023]
Abstract
BACKGROUND Abscisic acid (ABA) functions as a stress phytohormone in many growth and developmental processes in plants. The ultra-sensitive determination of ABA would help to better understand its vital roles and action mechanisms. RESULTS We report a new sensitive and high throughput quantitative real time immuno-PCR (qIPCR) method based on biotin-avidin linkage system for ABA determination in plants. ABA monoclonal antibody (McAb) coated on the inner surface of PCR well pretreated with glutaraldehyde. The pre-prepared probe complex, including biotinylated McAb, biotinylated DNA and streptavidin linker, was convenient for high throughput operations. Finally, probe DNA was quantified by real-time PCR. The detectable ranges were from 10 to 40 ng/L with a limit of detection (LOD) of 2.5 fg. ABA contents in plant sample were simultaneously analyzed using LC-MS/MS to validate the qIPCR method. The results showed that qIPCR method has good specificity and repeatability with a recovery rate of 96.9%. CONCLUSION The qIPCR method is highly sensitive for ABA quantification for actual plant samples with an advantage of using crude extracts instead of intensively purified samples.
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Affiliation(s)
- Yi Su
- Hunan Provincial Key Laboratory of Phytohormones and Growth Development, Hunan Agricultural University, Changsha, China
- Southern Regional Collaborative Innovation Center for Grain and Oil Crops in China, Hunan Agricultural University, Changsha, China
| | - Wei Li
- Hunan Provincial Key Laboratory of Phytohormones and Growth Development, Hunan Agricultural University, Changsha, China
- Tea Research Institute, Hunan Academy of Agriculture Science, Changsha, 410125 China
| | - Zhigang Huang
- Hunan Provincial Key Laboratory of Phytohormones and Growth Development, Hunan Agricultural University, Changsha, China
- Southern Regional Collaborative Innovation Center for Grain and Oil Crops in China, Hunan Agricultural University, Changsha, China
| | - Ruozhong Wang
- Hunan Provincial Key Laboratory of Phytohormones and Growth Development, Hunan Agricultural University, Changsha, China
- Southern Regional Collaborative Innovation Center for Grain and Oil Crops in China, Hunan Agricultural University, Changsha, China
| | - Weigui Luo
- Hunan Provincial Key Laboratory of Phytohormones and Growth Development, Hunan Agricultural University, Changsha, China
| | - Qing Liu
- Hunan Provincial Key Laboratory of Phytohormones and Growth Development, Hunan Agricultural University, Changsha, China
- Southern Regional Collaborative Innovation Center for Grain and Oil Crops in China, Hunan Agricultural University, Changsha, China
| | - Jianhua Tong
- Hunan Provincial Key Laboratory of Phytohormones and Growth Development, Hunan Agricultural University, Changsha, China
| | - Langtao Xiao
- Hunan Provincial Key Laboratory of Phytohormones and Growth Development, Hunan Agricultural University, Changsha, China
- Southern Regional Collaborative Innovation Center for Grain and Oil Crops in China, Hunan Agricultural University, Changsha, China
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Coarsey CT, Esiobu N, Narayanan R, Pavlovic M, Shafiee H, Asghar W. Strategies in Ebola virus disease (EVD) diagnostics at the point of care. Crit Rev Microbiol 2017; 43:779-798. [PMID: 28440096 PMCID: PMC5653233 DOI: 10.1080/1040841x.2017.1313814] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2016] [Revised: 10/21/2016] [Accepted: 03/25/2017] [Indexed: 12/13/2022]
Abstract
Ebola virus disease (EVD) is a devastating, highly infectious illness with a high mortality rate. The disease is endemic to regions of Central and West Africa, where there is limited laboratory infrastructure and trained staff. The recent 2014 West African EVD outbreak has been unprecedented in case numbers and fatalities, and has proven that such regional outbreaks can become a potential threat to global public health, as it became the source for the subsequent transmission events in Spain and the USA. The urgent need for rapid and affordable means of detecting Ebola is crucial to control the spread of EVD and prevent devastating fatalities. Current diagnostic techniques include molecular diagnostics and other serological and antigen detection assays; which can be time-consuming, laboratory-based, often require trained personnel and specialized equipment. In this review, we discuss the various Ebola detection techniques currently in use, and highlight the potential future directions pertinent to the development and adoption of novel point-of-care diagnostic tools. Finally, a case is made for the need to develop novel microfluidic technologies and versatile rapid detection platforms for early detection of EVD.
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Affiliation(s)
- Chad T. Coarsey
- Department of Computer and Electrical Engineering & Computer Science, Florida Atlantic University, Boca Raton, FL, United States
- Asghar-Lab: Micro and Nanotechnology in Medicine, Florida Atlantic University, Boca Raton, FL, United States
| | - Nwadiuto Esiobu
- Department of Biological Sciences, Florida Atlantic University, Boca Raton, FL, United States
| | - Ramswamy Narayanan
- Department of Biological Sciences, Florida Atlantic University, Boca Raton, FL, United States
| | - Mirjana Pavlovic
- Department of Computer and Electrical Engineering & Computer Science, Florida Atlantic University, Boca Raton, FL, United States
| | - Hadi Shafiee
- Division of Engineering in Medicine, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, United States
| | - Waseem Asghar
- Department of Computer and Electrical Engineering & Computer Science, Florida Atlantic University, Boca Raton, FL, United States
- Asghar-Lab: Micro and Nanotechnology in Medicine, Florida Atlantic University, Boca Raton, FL, United States
- Department of Biological Sciences, Florida Atlantic University, Boca Raton, FL, United States
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Maerle AV, Voronina DV, Dobrochaeva KL, Galanina OE, Alekseev LP, Bovin NV, Zavriev SK, Ryazantsev DY. Immuno-PCR technology for detection of natural human antibodies against Le c disaccharide. Glycoconj J 2017; 34:199-205. [PMID: 28091939 DOI: 10.1007/s10719-016-9751-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2016] [Revised: 11/08/2016] [Accepted: 11/17/2016] [Indexed: 10/20/2022]
Abstract
The development of an immuno-PCR assay for quantitation of low amounts of anti-glycan human antibodies is described. The sensitivity of the assay for determination of low-affinity anti-LeC IgM has been found to be 4 ng/ml (~100 pg per sample), thus being two orders of magnitude higher compared to the conventional ELISA with the same antigen.
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Affiliation(s)
| | - Daria V Voronina
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, Russia
| | - Kira L Dobrochaeva
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, Russia
| | - Oxana E Galanina
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, Russia
| | - Leonid P Alekseev
- NRC Institute of Immunology, Federal Biomedical Agency of Russia, Moscow, Russia
| | - Nicolai V Bovin
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, Russia
| | - Sergei K Zavriev
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, Russia
| | - Dmitriy Yu Ryazantsev
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, Russia
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Ryazantsev DY, Voronina DV, Zavriev SK. Immuno-PCR: achievements and perspectives. BIOCHEMISTRY (MOSCOW) 2017; 81:1754-1770. [DOI: 10.1134/s0006297916130113] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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Spengler M, Adler M, Niemeyer CM. Highly sensitive ligand-binding assays in pre-clinical and clinical applications: immuno-PCR and other emerging techniques. Analyst 2016. [PMID: 26196036 DOI: 10.1039/c5an00822k] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Recombinant DNA technology and corresponding innovations in molecular biology, chemistry and medicine have led to novel therapeutic biomacromolecules as lead candidates in the pharmaceutical drug development pipelines. While monoclonal antibodies and other proteins provide therapeutic potential beyond the possibilities of small molecule drugs, the concomitant demand for supportive bioanalytical sample testing creates multiple novel challenges. For example, intact macromolecules can usually not be quantified by mass-spectrometry without enzymatic digestion and isotopically labeled internal standards are costly and/or difficult to prepare. Classical ELISA-type immunoassays, on the other hand, often lack the sensitivity required to obtain pharmacokinetics of low dosed drugs or pharmacodynamics of suitable biomarkers. Here we summarize emerging state-of-the-art ligand-binding assay technologies for pharmaceutical sample testing, which reveal enhanced analytical sensitivity over classical ELISA formats. We focus on immuno-PCR, which combines antibody specificity with the extremely sensitive detection of a tethered DNA marker by quantitative PCR, and alternative nucleic acid-based technologies as well as methods based on electrochemiluminescence or single-molecule counting. Using case studies, we discuss advantages and drawbacks of these methods for preclinical and clinical sample testing.
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Affiliation(s)
- Mark Spengler
- Chimera Biotec GmbH, Emil-Figge-Str. 76 A, D-44227 Dortmund, Germany.
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Khan AH, Sadroddiny E. Application of immuno-PCR for the detection of early stage cancer. Mol Cell Probes 2016; 30:106-12. [DOI: 10.1016/j.mcp.2016.01.010] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2015] [Revised: 01/29/2016] [Accepted: 01/29/2016] [Indexed: 12/11/2022]
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Abstract
Polymerase chain reaction-amplified immunoassay (immuno-PCR, iPCR) is a method that combines the specificity of an immunological detection method and the sensitivity of a nucleic acid amplification method. In this way, immuno-PCR uses a minimum amount of sample, and allows the detection of rare diseases and those diseases in very early stage (i.e. infectious diseases, degenerative disorders, or neoplastic diseases). The present review was aimed to describe this new methodology and applications to the early detection of cancer and non-cancer related diseases, and discuss about the possibility to detect diverse biomarkers of oncology disorders, such as breast, gastric, colorectal and nasopharynx cancer, and other factors related to the growth of the neoplastic disease.
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Affiliation(s)
- Anna Luiza F V Assumpção
- a Department of Pathobiological Science, School of Veterinary Medicine , University of Wisconsin-Madison , Madison , WI , USA
| | - Rodrigo C da Silva
- b Department of Pathobiology and Population Medicine, College of Veterinary Medicine , Mississippi State University , Mississippi State , MS , USA
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Fluorescence-based bioassays for the detection and evaluation of food materials. SENSORS 2015; 15:25831-67. [PMID: 26473869 PMCID: PMC4634490 DOI: 10.3390/s151025831] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 07/24/2015] [Revised: 09/28/2015] [Accepted: 09/30/2015] [Indexed: 12/12/2022]
Abstract
We summarize here the recent progress in fluorescence-based bioassays for the detection and evaluation of food materials by focusing on fluorescent dyes used in bioassays and applications of these assays for food safety, quality and efficacy. Fluorescent dyes have been used in various bioassays, such as biosensing, cell assay, energy transfer-based assay, probing, protein/immunological assay and microarray/biochip assay. Among the arrays used in microarray/biochip assay, fluorescence-based microarrays/biochips, such as antibody/protein microarrays, bead/suspension arrays, capillary/sensor arrays, DNA microarrays/polymerase chain reaction (PCR)-based arrays, glycan/lectin arrays, immunoassay/enzyme-linked immunosorbent assay (ELISA)-based arrays, microfluidic chips and tissue arrays, have been developed and used for the assessment of allergy/poisoning/toxicity, contamination and efficacy/mechanism, and quality control/safety. DNA microarray assays have been used widely for food safety and quality as well as searches for active components. DNA microarray-based gene expression profiling may be useful for such purposes due to its advantages in the evaluation of pathway-based intracellular signaling in response to food materials.
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Gaudet D, Nilsson D, Lohr T, Sheedy C. Development of a real-time immuno-PCR assay for the quantification of 17β-estradiol in water. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART. B, PESTICIDES, FOOD CONTAMINANTS, AND AGRICULTURAL WASTES 2015; 50:683-690. [PMID: 26273752 DOI: 10.1080/03601234.2015.1048097] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
A competitive real-time (RT) immuno-polymerase chain reaction (iPCR) (RT-iPCR) assay was developed for the sensitive quantification of 17β-estradiol in water. Using a universal iPCR method and polyclonal antibodies, 17β-estradiol was accurately quantified at concentrations ranging from 1 pg mL(-1) to 10 µg mL(-1). The RT-iPCR assay's limit of detection was 0.7 pg mL(-1). The RT-iPCR assay provided an 800-fold increase in sensitivity as well as an expanded working range compared with the corresponding enzyme-linked immunosorbent assay. Assay cross-reactivity to estrone and estriol, two structurally related estrogens, was below 8%. Water samples spiked with 17β-estradiol were analyzed by RT-iPCR to determine the assay's potential as a rapid screen for the monitoring of manure-borne estrogens in the environment. The assay showed recoveries of 82, 102 and 103% for Milli-Q, tap, and irrigation water, respectively, without requiring sample extraction or concentration prior to analysis.
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Affiliation(s)
- Daniel Gaudet
- a Agriculture and Agri-Food Canada , Lethbridge , Canada
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Lee JW, Cho JH, Cho EJ. Aptamer-based optical switch for biosensors. ANALYTICAL SCIENCE AND TECHNOLOGY 2014. [DOI: 10.5806/ast.2014.27.3.121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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13
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Nong RY, Gu J, Darmanis S, Kamali-Moghaddam M, Landegren U. DNA-assisted protein detection technologies. Expert Rev Proteomics 2014; 9:21-32. [DOI: 10.1586/epr.11.78] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Zhao P, Feng J, Wu Y, Xu F, Lv C, Fu E, Ma X, Zeng Y. Detection of HIV-1 p24 antigen using a simple and highly sensitive chemiluminescence immunoassay. Future Virol 2013. [DOI: 10.2217/fvl.13.45] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Aim: Our study aimed to improve the p24 antigen assay, which is a well-established and widely adopted method for the early detection of HIV-1 infections, in order to increase its sensitivity and efficiency and reduce its cost if possible. Materials & methods: We tested HIV-1 standard p24-positive samples and an HIV-1 p24 antigen panel using a new luminol-based chemiluminescence immunoassay (CLIA) based on a typical ‘sandwich’ p24 ELISA with two antibodies, but utilizing luminol as the luminescence compound, which is oxidized by hydrogen peroxide in the presence of horseradish peroxidase in an alkaline environment. A standard curve for the p24 antigen CLIA was generated and fitted a third-order polynomial regression model very well. To quantify p24 antigen, we investigated the linear standard curve fitting by measuring and comparing the effective assay range, r2 value and error of each function. Results: The p24 antigen CLIA showed a detection limit of 0.5 pg/ml and a detection range of 0.5–5 × 103 pg/ml. The specificity and sensitivity of this assay were further evaluated, and were both found to be 100% for the HIV-1 p24 antigen panel. The luminescence reaction of the CLIA p24 assay takes only 2 min to perform, which greatly reduced the diagnosis time. Additionally, the CLIA p24 assay is as affordable as the normal ELISA method. Conclusion: In our studies, the p24 antigen CLIA shows improved sensitivity, a wider range of response and was less time-consuming than ELISA, as traditional ELISA uses chromogen or a substrate that changes color when cleaved by the enzyme attached to a second antibody. This seems to be an easy and affordable method for the diagnosis of HIV-1 infection and monitoring of disease progression in developing countries. Although more advantages have been seen in CLIA than in ELISA, additional studies are still needed to confirm this.
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Affiliation(s)
- Pengxiang Zhao
- College of Life Science & Bioengineering, Beijing University of Technology, 100 Pingleyuan, Chaoyang District, Beijing 100124, China
- University of California, San Diego, CA, USA
| | - Juan Feng
- Patent Examination Cooperation Center of the Patent Office, SIPO, Beijing, China
| | - Yanan Wu
- College of Life Science & Bioengineering, Beijing University of Technology, 100 Pingleyuan, Chaoyang District, Beijing 100124, China
| | - Fei Xu
- College of Life Science & Bioengineering, Beijing University of Technology, 100 Pingleyuan, Chaoyang District, Beijing 100124, China
| | - Chuanchen Lv
- College of Life Science & Bioengineering, Beijing University of Technology, 100 Pingleyuan, Chaoyang District, Beijing 100124, China
| | - Emily Fu
- University of California, San Diego, CA, USA
| | - Xuemei Ma
- College of Life Science & Bioengineering, Beijing University of Technology, 100 Pingleyuan, Chaoyang District, Beijing 100124, China.
| | - Yi Zeng
- College of Life Science & Bioengineering, Beijing University of Technology, 100 Pingleyuan, Chaoyang District, Beijing 100124, China
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Barletta J, Bartolome A. Immuno-polymerase chain reaction as a unique molecular tool for detection of infectious agents. ACTA ACUST UNITED AC 2013; 1:267-88. [PMID: 23489312 DOI: 10.1517/17530059.1.2.267] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Theoretically, the immuno-polymerase chain reaction (IPCR) method is the most sensitive technique for the detection of proteins and gains its uniqueness through the exponential amplification of a signal-generating nucleic acid intermediate attached to a protein target. This method is similar to PCR for the detection of nucleic acid targets, and has now been shown to offer the ability to detect infectious agents where nucleic acids are not present. Although the technical development of IPCR has taken a torturous path down a winding avenue of encouraging advances, the method remains rarely utilized by the scientific community and completely unused as a clinical diagnostic test approved by a national accrediting agency. Although the use of real-time instrumentation has enhanced the performance of IPCR to higher levels of statistical accuracy and reproducibility, as compared with the conventional method, its application remains limited by the high standards required for clinical diagnoses of infectious diseases. This review summarizes experimental data published to date describing the utilization of the IPCR method as it relates to the detection and diagnosis of human infectious disease, and examines the progressive development of this method, as well as the factors impeding its universal application as a clinical diagnostic tool. With further standardization and validation, the IPCR method has the potential to become the most analytically sensitive method available for the detection of target proteins of infectious diseases.
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Affiliation(s)
- Janet Barletta
- University of Maryland Baltimore, Department of Pathology, 725 W. Lombard St., Baltimore, MD 21201, USA +1 410 706 2215 ; +1 410 706 0155 ;
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Jiang X, Cheng S, Chen W, Wang L, Shi F, Zhu C. Comparison of oligonucleotide-labeled antibody probe assays for prostate-specific antigen detection. Anal Biochem 2012; 424:1-7. [PMID: 22343190 DOI: 10.1016/j.ab.2012.02.004] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2011] [Revised: 01/17/2012] [Accepted: 02/03/2012] [Indexed: 10/28/2022]
Abstract
As a specific tumor marker, prostate-specific antigen (PSA) is widely used for the early diagnosis of prostate cancer. Sensitive and specific methods are required to improve the diagnostic accuracy of PSA detection. In the current study, we compared the immuno-polymerase chain reaction (immuno-PCR) method with the solid-phase proximity ligation assay (SP-PLA) with respect to the detection of PSA. Using oligonucleotide-labeled antibody probes, we used both immuno-PCR and SP-PLA to detect trace levels of PSA. The nucleic acid sequences can be monitored using real-time PCR. SP-PLA, however, was found to be superior in terms of both the detection limit and the dynamic range. To detect even lower levels of PSA, we used the loop-mediated isothermal amplification (LAMP) method to measure the levels of reporter DNA molecules in SP-PLA. The sensitivity of the LAMP method is 0.001 pM, which is approximately 100-fold higher than the sensitivities of the other assays. The results suggest that an SP-PLA- and LAMP-based protocol with oligonucleotide-labeled antibody probes may have great application in detecting PSA or other proteins present at trace levels.
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Affiliation(s)
- Xuecheng Jiang
- College of Life Sciences, Zhejiang University, 310058 Hangzhou, China
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Potůčková L, Franko F, Bambousková M, Dráber P. Rapid and sensitive detection of cytokines using functionalized gold nanoparticle-based immuno-PCR, comparison with immuno-PCR and ELISA. J Immunol Methods 2011; 371:38-47. [PMID: 21704628 DOI: 10.1016/j.jim.2011.06.012] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2011] [Revised: 06/09/2011] [Accepted: 06/13/2011] [Indexed: 02/05/2023]
Abstract
Reliable and simple methods are required for detection of low concentrations of cytokines and some other proteins in complex biological fluids. This is especially important when monitoring the immune responses under various physiological and pathophysiological conditions in vivo or following production of these compounds in in vitro systems. Cytokines and other immunologically active molecules are being predominantly detected by enzyme-linked immunosorbent assays (ELISA) and newly also by immuno-polymerase chain reactions (iPCR). New simplified variants of iPCR have recently been described where antibodies are connected with multiple DNA templates through gold nanoparticles (Au-NPs) to form a new class of detection reagents. In this study we compared functionalized Au-NP-based iPCR (Nano-iPCR) with standard ELISA and iPCR for the detection of interleukin (IL)-3 and stem cell factor (SCF). The same immunoreagents (IL-3- and SCF-specific polyclonal antibodies and their biotinylated forms) were used throughout the assays. The obtained data indicate that both Nano-iPCR and iPCR are superior in sensitivity and detection range than ELISA. Furthermore, Nano-iPCR is easier to perform than the other two methods. Nano-iPCR was used for monitoring changes in concentration of free SCF during growth of mast cells in SCF-conditioned media. The results show that growing cultures gradually reduce the amount of SCF in supernatant to 25% after 5 days. The combined data indicate that Nano-iPCR assays may be preferable for rapid detection of low concentrations of cytokines in complex biological fluids.
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Affiliation(s)
- Lucie Potůčková
- Laboratory of Signal Transduction, Institute of Molecular Genetics, Academy of Sciences of the Czech Republic, CZ-14220 Prague 4, Czech Republic
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Malou N, Raoult D. Immuno-PCR: a promising ultrasensitive diagnostic method to detect antigens and antibodies. Trends Microbiol 2011; 19:295-302. [DOI: 10.1016/j.tim.2011.03.004] [Citation(s) in RCA: 85] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2010] [Revised: 02/09/2011] [Accepted: 03/08/2011] [Indexed: 11/30/2022]
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Kim HJ, McCoy M, Gee SJ, González-Sapienza GG, Hammock BD. Noncompetitive phage anti-immunocomplex real-time polymerase chain reaction for sensitive detection of small molecules. Anal Chem 2011; 83:246-53. [PMID: 21141939 PMCID: PMC3031424 DOI: 10.1021/ac102353z] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Immuno polymerase chain reaction (IPCR) is an analytical technology based on the excellent affinity and specificity of antibodies combined with the powerful signal amplification of polymerase chain reaction (PCR), providing superior sensitivity to classical immunoassays. Here we present a novel type of IPCR termed phage anti-immunocomplex assay real-time PCR (PHAIA-PCR) for the detection of small molecules. Our method utilizes a phage anti-immunocomplex assay (PHAIA) technology in which a short peptide loop displayed on the surface of the M13 bacteriophage binds specifically to the antibody-analyte complex, allowing the noncompetitive detection of small analytes. The phagemid DNA encoding this peptide can be amplified by PCR, and thus, this method eliminates hapten functionalization or bioconjugation of a DNA template while providing improved sensitivity. As a proof of concept, two PHAIA-PCRs were developed for the detection of 3-phenoxybenzoic acid, a major urinary metabolite of some pyrethroid insecticides, and molinate, a herbicide implicated in fish kills. Our results demonstrate that phage DNA can be a versatile material for IPCR development, enabling universal amplification when the common element of the phagemid is targeted or specific amplification when the real time PCR probe is designed to anneal the DNA encoding the peptide. The PHAIA-PCRs proved to be 10-fold more sensitive than conventional PHAIA and significantly faster using magnetic beads for rapid separation of reactants. The assay was validated with both agricultural drain water and human urine samples, showing its robustness for rapid monitoring of human exposure or environmental contamination.
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Affiliation(s)
- Hee-Joo Kim
- Department of Entomology and UCD Cancer Center, University of California, Davis, California 95616
| | - Mark McCoy
- Department of Entomology and UCD Cancer Center, University of California, Davis, California 95616
| | - Shirley J. Gee
- Department of Entomology and UCD Cancer Center, University of California, Davis, California 95616
| | - Gualberto G. González-Sapienza
- Cátedra de Inmunología, Facultad de Química, Instituto de Higiene, UDELAR, Av. A. Navarro 3051, piso 2, Montevideo 11600, Uruguay
| | - Bruce D. Hammock
- Department of Entomology and UCD Cancer Center, University of California, Davis, California 95616
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Stougaard M, Juul S, Andersen FF, Knudsen BR. Strategies for highly sensitive biomarker detection by Rolling Circle Amplification of signals from nucleic acid composed sensors. Integr Biol (Camb) 2011; 3:982-92. [DOI: 10.1039/c1ib00049g] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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21
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Ye QY, Zhuang HS, Zhou C. Detection of trace anthracene in soil samples with real-time fluorescence quantitative immuno-PCR using a molecular beacon probe. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2009; 28:386-391. [PMID: 21784031 DOI: 10.1016/j.etap.2009.06.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2009] [Revised: 06/09/2009] [Accepted: 06/13/2009] [Indexed: 05/31/2023]
Abstract
We developed a highly sensitive and robust real-time fluorescence quantitative immuno-PCR (RTFQ-IPCR) method which uses molecular beacon (MB) probe to detect trace anthracene in the environment. This method was performed on serial dilutions of known anthracene concentrations equivalent to 10-fold dilutions of 10fg/mL to 100pg/mL. We obtained a linear relationship between 10fg/mL and 100pg/mL, with y=0.684x+13.221. A correlation coefficient of 0.994 was also identified, with a detection limit of 4.5fg/mL. After investigating the presence of anthracene in soil samples via RTFQ-IPCR, the obtained concentrations were confirmed by ELISA to be correct and believable, with the recovery ratio ranging from 82% to 112.5%. Based on its sensitivity and reproducibility, MB-based RTFQ-IPCR was found to be acceptable for use in on-site field tests to provide rapid, quantitative, and reliable test results for making environmental decisions.
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Affiliation(s)
- Qi-Yan Ye
- College of Environmental Science and Engineering, Donghua University, 2999 North Renming Road, Songjiang, Shanghai 201620, China
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22
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Abstract
Early detection of pediatric viruses is critical to effective intervention. A successful clinical tool must have a low detection limit, be simple to use and report results quickly. No current method meets all three of these criteria. In this report, we describe an approach that combines simple, rapid processing and label free detection. The method detects viral RNA using DNA hairpin structures covalently attached to a gold filament. In this design, the gold filament serves both to simplify processing and enable fluorescence detection. The approach was evaluated by assaying for the presence of respiratory syncytial virus (RSV) using the DNA hairpin probe 5' [C6Thiol]TTTTTTTTTTCGACGAAAAATGGGGCAAATACGTCG[CAL] 3' covalently attached to a 5 cm length of a 100 microm diameter gold-clad filament. This sequence was designed to target a portion of the gene end-intergenic gene start signals which is repeated multiple times within the negative-sense genome giving multiple targets for each strand of genomic viral RNA present. The filament functionalized with probes was immersed in a 200 microm capillary tube containing viral RNA, moved to subsequent capillary tubes for rinsing and then scanned for fluorescence. The response curve had a typical sigmoidal shape and plateaued at about 300 plaque forming units (PFU) of viral RNA in 20 microL. The lower limit of detection was determined to be 11.9 PFU. This lower limit of detection was approximately 200 times better than a standard comparison ELISA. The simplicity of the core assay makes this approach attractive for further development as a viral detection platform in a clinical setting.
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Affiliation(s)
- Jonas W. Perez
- Vanderbilt University, Department of Chemistry, Station B 351822, Nashville, TN, 37235, USA. ; Fax: +1 615 343 1234; Tel: +1 615 322 2636
| | - Frederick R. Haselton
- Vanderbilt University, Department of Biomedical Engineering, Station B 351631, Nashville, TN, 37235, USA
| | - David W. Wright
- Vanderbilt University, Department of Chemistry, Station B 351822, Nashville, TN, 37235, USA. ; Fax: +1 615 343 1234; Tel: +1 615 322 2636
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23
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Chen HY, Zhuang HS. Real-time immuno-PCR assay for detecting PCBs in soil samples. Anal Bioanal Chem 2009; 394:1205-11. [DOI: 10.1007/s00216-009-2787-8] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2009] [Revised: 03/31/2009] [Accepted: 04/01/2009] [Indexed: 11/30/2022]
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24
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Immunomagnetic quantitative immuno-PCR for detection of less than one HIV-1 virion. J Virol Methods 2009; 157:122-32. [DOI: 10.1016/j.jviromet.2008.12.013] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2008] [Revised: 12/10/2008] [Accepted: 12/15/2008] [Indexed: 11/19/2022]
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25
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Roth L, Zagon J, Ehlers A, Kroh LW, Broll H. A novel approach for the detection of DNA using immobilized peptide nucleic acid (PNA) probes and signal enhancement by real-time immuno-polymerase chain reaction (RT-iPCR). Anal Bioanal Chem 2009; 394:529-37. [DOI: 10.1007/s00216-009-2724-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2008] [Revised: 02/12/2009] [Accepted: 02/18/2009] [Indexed: 10/21/2022]
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26
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Zhuang HS, Zhou C. Determination of anthracene by real-time immuno-polymerase chain reaction assay. Anal Chim Acta 2009; 633:278-82. [DOI: 10.1016/j.aca.2008.10.077] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2008] [Revised: 10/24/2008] [Accepted: 10/29/2008] [Indexed: 01/12/2023]
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27
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Zhou C, Zhuang H. Determination of fluoranthene by antigen-coated indirect competitive real-time immuno-PCR assay. ACTA ACUST UNITED AC 2009; 11:400-5. [DOI: 10.1039/b815995e] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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28
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Ye Q, Zhuang H, Zhou C. Detection of naphthalene by real-time immuno-PCR using molecular beacon. Mol Cell Probes 2008; 23:29-34. [PMID: 19028563 DOI: 10.1016/j.mcp.2008.10.004] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2008] [Revised: 10/22/2008] [Accepted: 10/22/2008] [Indexed: 10/21/2022]
Abstract
A rapid and quantitative technique is urgently needed in detecting toxicological and carcinogenic polycyclic aromatic hydrocarbons (PAHs) in the environment. Using a molecular beacon (MB), this study aimed at detecting the presence of naphthalene through an assay developed via a highly sensitive and robust, real-time fluorescent quantitative immuno-PCR (FQ-IPCR), which was then performed on serial dilutions of known naphthalene concentrations equivalent to 10-fold dilutions of 1-10(4) fg/mL. A correlation coefficient of 0.996 was identified, and a linear relationship between 1 fg/mL and 10 pg/mL, with y = 1.392x + 11.188, was obtained. A trace amount (1 fg/mL) of naphthalene congeners could be detected using this method. Five water samples were then used for validation, the results of which were further confirmed through a conventional enzyme-linked immuno sorbent assay (ELISA). Based on sensitivity and reproduction, the MB-based FQ-IPCR technique is a promising tool for monitoring environmental endocrine disruptors.
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Affiliation(s)
- Qiyan Ye
- College of Environmental Science and Engineering, Donghua University, Shanghai 201620, China
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29
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Assessment of the diagnostic potential of Immmunocapture-PCR and Immuno-PCR for Citrus Variegated Chlorosis. J Microbiol Methods 2008; 75:302-7. [DOI: 10.1016/j.mimet.2008.06.024] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2008] [Revised: 06/30/2008] [Accepted: 06/30/2008] [Indexed: 11/23/2022]
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30
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Real-time PCR detection of protein analytes with conformation-switching aptamers. Anal Biochem 2008; 380:164-73. [PMID: 18541130 DOI: 10.1016/j.ab.2008.05.018] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2007] [Revised: 05/12/2008] [Accepted: 05/13/2008] [Indexed: 11/23/2022]
Abstract
We have developed a novel method that uses conformation-switching aptamers for real-time PCR analysis of protein analytes. The aptamers have been designed so that they assume one secondary structure in the absence of a protein analyte and a different secondary structure in the presence of a protein such as thrombin or platelet-derived growth factor (PDGF). The protein-bound structure in turn assembles a ligation junction for the addition of a real-time PCR primer. Protein concentrations could be specifically detected into the picomolar range, even in the presence of cell lysates. The method has advantages relative to both immunoPCR (because no signal is produced by background binding) and the proximity ligation assay (PLA) (because only one epitope, rather than two epitopes, on a protein surface must be bound).
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31
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Adler M, Wacker R, Niemeyer CM. Sensitivity by combination: immuno-PCR and related technologies. Analyst 2008; 133:702-18. [PMID: 18493669 DOI: 10.1039/b718587c] [Citation(s) in RCA: 112] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The versatility of immunoassays for the detection of antigens can be combined with the signal amplification power of nucleic acid amplification techniques in a broad range of innovative detection strategies. This review summarizes the spectrum of both, DNA-modification techniques used for assay enhancement and the resulting key applications. In particular, it focuses on the highly sensitive immuno-PCR (IPCR) method. This technique is based on chimeric conjugates of specific antibodies and nucleic acid molecules, the latter of which are used as markers to be amplified by PCR or related techniques for signal generation and read-out. Various strategies for the combination of antigen detection and nucleic acid amplification are discussed with regard to their laboratory analytic performance, including novel approaches to the conjugation of antibodies with DNA, and alternative pathways for signal amplification and detection. A critical assessment of advantages and drawbacks of these methods for a number of applications in clinical diagnostics and research is conducted. The examples include the detection of viral and bacterial antigens, tumor markers, toxins, pathogens, cytokines and other targets in different biological sample materials.
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Affiliation(s)
- Michael Adler
- Chimera Biotec GmbH, Emil-Figge-Str. 76 A, D-44227, Dortmund, Germany
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32
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Lind K, Norbeck J. Immuno-qPCR detection of the tandem affinity purification (TAP)-tag as a sensitive and accurate tool suitable for large-scale protein quantification. Proteomics 2007; 7:4414-23. [DOI: 10.1002/pmic.200700577] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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33
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34
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Smith SS. Nucleoprotein assemblies at the nanoscale: medical implications. Nanomedicine (Lond) 2007; 1:427-36. [PMID: 17716145 DOI: 10.2217/17435889.1.4.427] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Bionanotechnology is exploiting the rich structural knowledge now available on DNA and DNA-protein interactions to construct nucleoprotein-based devices that have the potential not only to contribute to our understanding of the structure and function of the proteins and nucleic acids involved but also to new approaches to problems in medicine. Assemblies under development currently are poised to contribute to diagnosis and therapy. Here, I discuss recent work in this emerging field.
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Affiliation(s)
- Steven S Smith
- City of Hope National Medical Center and Beckman Research Institute, Duarte, CA 91010, USA.
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35
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Abstract
Proteins are essential components of organisms and are involved in a wide range of biological functions. There are increasing demands for ultra-sensitive protein detection, because many important protein biomarkers are present at ultra-low levels, especially during the early stages of disease. Measuring proteins at low levels is also crucial for investigations of the protein synthesis and functions in biological systems. In this review, we summarize the recent developments of novel technology enabling ultrasensitive protein detection. We focus on two groups of techniques that involve either polymerase amplification of affinity DNA probes or signal amplification by the use of nano-/micro-materials. The polymerase-based amplification of affinity DNA probes indirectly improves the sensitivity of protein detection by increasing the number of detection molecules. The use of nano-/micro-materials conjugated to affinity probes enhances the measurement signals by using the unique electrical, optical, and catalytic properties of these novel materials. This review describes the basic principles, performances, applications, merits, and limitations of these techniques.
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Affiliation(s)
- Hongquan Zhang
- Analytical and Environmental Toxicology, Department of Laboratory Medicine and Pathology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta, Canada T6G 2G3
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36
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Yang L, Fung CW, Cho EJ, Ellington AD. Real-time rolling circle amplification for protein detection. Anal Chem 2007; 79:3320-9. [PMID: 17378540 DOI: 10.1021/ac062186b] [Citation(s) in RCA: 161] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Real-time nucleic acid amplification methods can be extremely useful for the identification and quantitation of nucleic acid analytes, but are more difficult to adapt to protein or other analytes. To facilitate the development of real-time rolling circle amplification (RCA) for protein targets, we have developed a novel type of conformation-switching aptamer that can be circularized upon interaction with its protein target, the platelet-derived growth factor (PDGF). Using the structure-switching aptamer, real-time RCA can be used to specifically quantitate PDGF down to the low-nanomolar range (limit of detection, 0.4 nM), even against a background of cellular lysate. The aptamer can also be adapted to RCA on surfaces, although quantitation proved to be more difficult. One of the great advantages of the method described herein is that it can be immediately adapted to almost any aptamer and does not require two or more affinity reagents as do sandwich or proximity assays.
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Affiliation(s)
- Litao Yang
- Institute for Cellular and Molecular Biology, University of Texas at Austin, Austin, Texas 78712, USA
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