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Sakono M, Arisawa T, Ohya T, Sakono N, Manaka A. Preparation of Luciferase-fused Peptides for Immunoassay of Amyloid Beta. ANAL SCI 2021; 37:759-763. [PMID: 33583860 DOI: 10.2116/analsci.20scp19] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
An immunoassay, such as the enzyme-linked immunosorbent assay (ELISA), is an analytical method that utilizes the interaction of antigens and antibodies. Enzyme-labeled antigens require both molecular recognition by the antibody and enzymatic activity as a reporter. We designed and constructed an immunodetection system for amyloid beta peptides (Aβ) using an enzyme-labeled antigen expressed from Escherichia coli. Aβ(1-16) fused with renilla luciferase was prepared as the enzyme-labeled antigen. In the presence of this luciferase-fused peptide, the luminescence of coelenterazine-h was observed. The influence of the fusion with Aβ on the luminescence reaction was insignificant. Surface plasmon resonance analysis indicated that the interaction between the luciferase-fused Aβ and anti-Aβ antibody was sufficiently strong. In the competitive ELISA assay for Aβ detection using the luciferase-fused Aβ, the luminescence intensity decreased as the Aβ concentration increased.
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Affiliation(s)
- Masafumi Sakono
- Department of Applied Chemistry, Faculty of Engineering, University of Toyama
| | - Taiki Arisawa
- Department of Applied Chemistry, Faculty of Engineering, University of Toyama
| | - Takuma Ohya
- Department of Applied Chemistry, Faculty of Engineering, University of Toyama
| | - Naomi Sakono
- Department of Applied Chemistry and Chemical Engineering, National Institute of Technology, Toyama College
| | - Atsushi Manaka
- Department of Applied Chemistry and Chemical Engineering, National Institute of Technology, Toyama College
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Smirnova DV, Rubtsova MY, Grigorenko VG, Ugarova NN. A Novel Streptavidin-luciferase Fusion Protein: Preparation, Properties and Application in Hybridization Analysis of DNA. Photochem Photobiol 2016; 93:541-547. [PMID: 27861953 DOI: 10.1111/php.12666] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2016] [Accepted: 09/29/2016] [Indexed: 12/14/2022]
Abstract
A streptavidin-luciferase fusion protein comprising the thermostable mutant form of firefly luciferase Luciola mingrelica and minimal core streptavidin was constructed. The streptavidin-luciferase fusion was mainly produced in a tetrameric form with high luciferase and biotin-binding activities. It was shown that fusion has the same Km values for ATP and luciferin and the bioluminescence spectra as initial luciferase. The linear dependence of the bioluminescence signal on the content of the fusion was observed within the range of 10-18 -10-13 mol per well. Successful application of obtained fusion in a biospecific bioluminescence assay based on biotin-streptavidin interactions was demonstrated by the example of a specific DNA hybridization analysis. A DNA hybridization analysis for Escherichia coli cells identification was developed using unique for these cells gadB fragment encoding glutamate decarboxylase. The amplified biotinylated GadB fragments were hybridized with the immobilized oligonucleotide probes; then, the biotin in the DNA duplexes was detected using the streptavidin-luciferase fusion protein. To reach the high sensitivity of the assay, we optimized the conditions of the assay. It was shown that the use of Pluronic for plate modification resulted in a significant reduction in the DNA detection limit which finally was 0.4 ng per well.
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Affiliation(s)
- Daria V Smirnova
- Department of Chemistry, Lomonosov Moscow State University, Moscow, Russia.,"Lumtek" LLC, Moscow, Russia
| | - Maya Y Rubtsova
- Department of Chemistry, Lomonosov Moscow State University, Moscow, Russia
| | | | - Natalia N Ugarova
- Department of Chemistry, Lomonosov Moscow State University, Moscow, Russia.,"Lumtek" LLC, Moscow, Russia
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Smirnova DV, Ugarova NN. Firefly Luciferase-based Fusion Proteins and their Applications in Bioanalysis. Photochem Photobiol 2016; 93:436-447. [PMID: 27796044 DOI: 10.1111/php.12656] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2016] [Accepted: 08/31/2016] [Indexed: 12/19/2022]
Abstract
Firefly luciferase is widely used in molecular biology and bioanalytical systems as a reporter molecule due to the high quantum yield of the bioluminescence, availability of stable mutant forms of the enzyme with prescribed spectral characteristics and abundance of bacterial expression systems suitable for production of recombinant proteins in limitless quantities. In this review, we described fusion proteins of luciferase with biotin-binding domain and streptavidin, with proteins A and G, antibodies, with DNA- and RNA-binding proteins, as well as fusion proteins designed for BRET systems. The firefly luciferase-based fusion proteins are represented as an effective tool for the development of different bioanalytical systems such as (1) systems in which luciferase is attached to the surface of the target and the bioluminescence signal is detected from the specific complexes formed; (2) BRET-based systems, in which the specific interaction induces changes in the bioluminescence spectrum; and (3) systems that use modified or split luciferases, in which the luciferase activity changes under the action of the analyte. All these systems have wide application in biochemical analysis of physiologically important compounds, for the detection of pathogenic bacteria and viruses, for evaluation of protein-protein interactions, assaying of metabolites involved in cell communication and cell signaling.
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Affiliation(s)
- Daria V Smirnova
- Department of Chemistry, Lomonosov Moscow State University, Moscow, Russia
| | - Natalia N Ugarova
- Department of Chemistry, Lomonosov Moscow State University, Moscow, Russia
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Kasparovska J, Krizova L, Lochman J, Dadakova K, Kasparovsky T. Soybean-Derived Isoflavone Determination in Rumen Fluid and Milk by LC-MS-(TOF). J Chromatogr Sci 2016; 54:997-1003. [PMID: 27021208 DOI: 10.1093/chromsci/bmw033] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2015] [Indexed: 11/12/2022]
Abstract
Soybean-derived isoflavones belong to the family of biologically active phytoestrogens. The purpose of this study was to develop a sensitive method, which permits quantification of the soybean isoflavonoids and equol in bovine rumen fluid and milk using LC-MS-(TOF). The samples of rumen fluid and milk were obtained from 12 lactating dairy cows ingesting 7,500-9,500 mg of total isoflavones daily. The validation of the developed method showed the limits of quantification to be in the range of 0.9-5.0 ng/mL. The precision was determined as relative standard deviation, which was lower than 25% in all cases. The recoveries of the most isoflavonoids were satisfactory. Lower recoveries of daidzin and glycitin can be solved by adding an internal standard. The presented method will be useful for kinetic studies of isoflavone metabolism in ruminants due to simultaneous quantification of free aglycones and glycosides in the rumen fluid.
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Affiliation(s)
- Jitka Kasparovska
- Department of Biochemistry, Faculty of Science, Masaryk University, Kotlarska 2, 611 37 Brno, Czech Republic
| | - Ludmila Krizova
- Department of Biochemistry, Faculty of Science, Masaryk University, Kotlarska 2, 611 37 Brno, Czech Republic
| | - Jan Lochman
- Department of Biochemistry, Faculty of Science, Masaryk University, Kotlarska 2, 611 37 Brno, Czech Republic
| | - Katerina Dadakova
- Department of Biochemistry, Faculty of Science, Masaryk University, Kotlarska 2, 611 37 Brno, Czech Republic
| | - Tomas Kasparovsky
- Department of Biochemistry, Faculty of Science, Masaryk University, Kotlarska 2, 611 37 Brno, Czech Republic
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Oyama H, Morita I, Kiguchi Y, Miyake S, Moriuchi A, Akisada T, Niwa T, Kobayashi N. Gaussia Luciferase as a Genetic Fusion Partner with Antibody Fragments for Sensitive Immunoassay Monitoring of Clinical Biomarkers. Anal Chem 2015; 87:12387-95. [DOI: 10.1021/acs.analchem.5b04015] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Hiroyuki Oyama
- Kobe Pharmaceutical University, 4-19-1, Motoyama-Kitamachi, Higashinada-ku,
Kobe 658-8558, Japan
| | - Izumi Morita
- Kobe Pharmaceutical University, 4-19-1, Motoyama-Kitamachi, Higashinada-ku,
Kobe 658-8558, Japan
| | - Yuki Kiguchi
- Kobe Pharmaceutical University, 4-19-1, Motoyama-Kitamachi, Higashinada-ku,
Kobe 658-8558, Japan
| | - Sayaka Miyake
- Kobe Pharmaceutical University, 4-19-1, Motoyama-Kitamachi, Higashinada-ku,
Kobe 658-8558, Japan
| | - Ayaka Moriuchi
- Kobe Pharmaceutical University, 4-19-1, Motoyama-Kitamachi, Higashinada-ku,
Kobe 658-8558, Japan
| | - Tatsuki Akisada
- Kobe Pharmaceutical University, 4-19-1, Motoyama-Kitamachi, Higashinada-ku,
Kobe 658-8558, Japan
| | - Toshifumi Niwa
- Department
of Medical Technology, School of Health Sciences, Tohoku University, 2-1,
Seiryo-machi, Aoba-ku, Sendai 980-8575, Japan
| | - Norihiro Kobayashi
- Kobe Pharmaceutical University, 4-19-1, Motoyama-Kitamachi, Higashinada-ku,
Kobe 658-8558, Japan
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Development of a highly sensitive bioluminescent enzyme immunoassay for hepatitis B virus surface antigen capable of detecting divergent mutants. CLINICAL AND VACCINE IMMUNOLOGY : CVI 2013; 20:1255-65. [PMID: 23761660 DOI: 10.1128/cvi.00186-13] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Hepatitis B virus (HBV) infections are sometimes overlooked when using commercial kits to measure hepatitis B virus surface antigen (HBsAg) due to their low sensitivities and reactivities to mutant strains of various genotypes. We developed an ultrasensitive bioluminescent enzyme immunoassay (BLEIA) for HBsAg using firefly luciferase, which is adaptable to a variety of HBsAg mutants, by combining four monoclonal antibodies with a polyclonal antibody against HBsAg. The measurement of seroconversion panels showed trace amounts of HBsAg during the early infection phase by the BLEIA because of its high sensitivity of 5 mIU/ml. The BLEIA detected HBsAg as early as did PCR in five of seven series and from 2.1 to 9.4 days earlier than commercial immunoassay methods. During the late infection phase, the BLEIA successfully detected HBsAg even 40 days after the disappearance of HBV DNA and the emergence of antibodies against HBsAg. The HBsAg BLEIA successfully detected all 13 recombinant HBsAg and 45 types of HBsAg mutants with various mutations within amino acids 90 to 164 in the S gene product. Some specimens had higher values determined by the BLEIA than those by a commercial chemiluminescent immunoassay; this suggests that such discrepancies were caused by the dissociation of preS1/preS2 peptides from the particle surface. With its highly sensitive detection of low-titer HBsAg, including various mutants, the HBsAg BLEIA is considered to be useful for the early diagnosis and prevention of HBV infection because of the shorter window of infection prior to detection, which facilitates early prediction of recurrence in HBV-infected individuals.
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