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Song JG, Baral KC, Kim GL, Park JW, Seo SH, Kim DH, Jung DH, Ifekpolugo NL, Han HK. Quantitative analysis of therapeutic proteins in biological fluids: recent advancement in analytical techniques. Drug Deliv 2023; 30:2183816. [PMID: 36880122 PMCID: PMC10003146 DOI: 10.1080/10717544.2023.2183816] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/08/2023] Open
Abstract
Pharmaceutical application of therapeutic proteins has been continuously expanded for the treatment of various diseases. Efficient and reliable bioanalytical methods are essential to expedite the identification and successful clinical development of therapeutic proteins. In particular, selective quantitative assays in a high-throughput format are critical for the pharmacokinetic and pharmacodynamic evaluation of protein drugs and to meet the regulatory requirements for new drug approval. However, the inherent complexity of proteins and many interfering substances presented in biological matrices have a great impact on the specificity, sensitivity, accuracy, and robustness of analytical assays, thereby hindering the quantification of proteins. To overcome these issues, various protein assays and sample preparation methods are currently available in a medium- or high-throughput format. While there is no standard or universal approach suitable for all circumstances, a liquid chromatography-tandem mass spectrometry (LC-MS/MS) assay often becomes a method of choice for the identification and quantitative analysis of therapeutic proteins in complex biological samples, owing to its high sensitivity, specificity, and throughput. Accordingly, its application as an essential analytical tool is continuously expanded in pharmaceutical R&D processes. Proper sample preparation is also important since clean samples can minimize the interference from co-existing substances and improve the specificity and sensitivity of LC-MS/MS assays. A combination of different methods can be utilized to improve bioanalytical performance and ensure more accurate quantification. This review provides an overview of various protein assays and sample preparation methods, with particular emphasis on quantitative protein analysis by LC-MS/MS.
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Affiliation(s)
- Jae Geun Song
- BK21 FOUR Team and Integrated Research Institute for Drug Development, College of Pharmacy, Dongguk University-Seoul, Goyang, Korea
| | - Kshitis Chandra Baral
- BK21 FOUR Team and Integrated Research Institute for Drug Development, College of Pharmacy, Dongguk University-Seoul, Goyang, Korea
| | - Gyu-Lin Kim
- BK21 FOUR Team and Integrated Research Institute for Drug Development, College of Pharmacy, Dongguk University-Seoul, Goyang, Korea
| | - Ji-Won Park
- BK21 FOUR Team and Integrated Research Institute for Drug Development, College of Pharmacy, Dongguk University-Seoul, Goyang, Korea
| | - Soo-Hwa Seo
- BK21 FOUR Team and Integrated Research Institute for Drug Development, College of Pharmacy, Dongguk University-Seoul, Goyang, Korea
| | - Da-Hyun Kim
- BK21 FOUR Team and Integrated Research Institute for Drug Development, College of Pharmacy, Dongguk University-Seoul, Goyang, Korea
| | - Dong Hoon Jung
- BK21 FOUR Team and Integrated Research Institute for Drug Development, College of Pharmacy, Dongguk University-Seoul, Goyang, Korea
| | - Nonye Linda Ifekpolugo
- BK21 FOUR Team and Integrated Research Institute for Drug Development, College of Pharmacy, Dongguk University-Seoul, Goyang, Korea
| | - Hyo-Kyung Han
- BK21 FOUR Team and Integrated Research Institute for Drug Development, College of Pharmacy, Dongguk University-Seoul, Goyang, Korea
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Medyantseva EP, Gazizullina ER, Brusnitsyn DV, Fedorenko SV, Mustafina AR, Eremin SA. Determination of Amitriptyline by Fluorescence Polarization Immunoassay. JOURNAL OF ANALYTICAL CHEMISTRY 2022. [DOI: 10.1134/s1061934822070085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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3
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Zhang J, Zhang M, Yang Q, Wei L, Yuan B, Pang C, Zhang Y, Sun X, Guo Y. A simple and rapid homogeneous fluorescence polarization immunoassay for rapid identification of gutter cooking oil by detecting capsaicinoids. Anal Bioanal Chem 2022; 414:6127-6137. [PMID: 35804073 DOI: 10.1007/s00216-022-04177-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Revised: 06/13/2022] [Accepted: 06/13/2022] [Indexed: 11/30/2022]
Abstract
In order to address the widespread concerns with food safety such as adulteration and forgery in the edible oil field, this study developed a fluorescence polarization immunoassay (FPIA) based on a monoclonal antibody in a homogeneous solution system for determination of capsaicinoids in gutter cooking oil by using chemically stable capsaicinoids as an adulteration marker. The prepared fluoresceinthiocarbamyl ethylenediamine (EDF) was coupled with capsaicinoid hapten C, and the synthesized tracer was purified by thin-layer chromatography (TLC) and showed good binding to the monoclonal antibody CPC Ab-D8. The effects of concentration of tracer and recognition components, type and pH of buffer and incubation time on the performance of FPIA were studied. The linear range (IC20 to IC80) was 3.97-97.99 ng/mL, and the half maximal inhibitory concentration (IC50) was 19.73 ng/mL, and the limit of detection (LOD) was 1.56 ng/mL. The recovery rates of corn germ oil, soybean oil and peanut blend oil were in the range of 94.7-132.3%. The experimental results showed that the fluorescence polarization detection system could realize the rapid detection of capsaicinoids, and had the potential to realize on-site identification of gutter cooking oil. As a universal monoclonal antibody, CPC Ab-D8 can also specifically identify capsaicin and dihydrocapsaicin, so the proposed method can be used to quickly monitor for the presence of gutter cooking oil in normal cooking oil.
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Affiliation(s)
- Jiali Zhang
- School of Agricultural Engineering and Food Science, Shandong University of Technology, No. 266 Xincun Xilu, Zibo, 255049, Shandong Province, China.,Shandong Provincial Engineering Research Center of Vegetable Safety and Quality Traceability, No. 266 Xincun Xilu, Zibo, 255049, Shandong Province, China.,Zibo City Key Laboratory of Agricultural Product Safety Traceability, No. 266 Xincun Xilu, Zibo, 255049, Shandong Province, China
| | - Minghui Zhang
- School of Agricultural Engineering and Food Science, Shandong University of Technology, No. 266 Xincun Xilu, Zibo, 255049, Shandong Province, China
| | - Qingqing Yang
- School of Agricultural Engineering and Food Science, Shandong University of Technology, No. 266 Xincun Xilu, Zibo, 255049, Shandong Province, China. .,Shandong Provincial Engineering Research Center of Vegetable Safety and Quality Traceability, No. 266 Xincun Xilu, Zibo, 255049, Shandong Province, China. .,Zibo City Key Laboratory of Agricultural Product Safety Traceability, No. 266 Xincun Xilu, Zibo, 255049, Shandong Province, China.
| | - Lin Wei
- School of Agricultural Engineering and Food Science, Shandong University of Technology, No. 266 Xincun Xilu, Zibo, 255049, Shandong Province, China.,Shandong Provincial Engineering Research Center of Vegetable Safety and Quality Traceability, No. 266 Xincun Xilu, Zibo, 255049, Shandong Province, China.,Zibo City Key Laboratory of Agricultural Product Safety Traceability, No. 266 Xincun Xilu, Zibo, 255049, Shandong Province, China
| | - Bei Yuan
- School of Agricultural Engineering and Food Science, Shandong University of Technology, No. 266 Xincun Xilu, Zibo, 255049, Shandong Province, China.,Shandong Provincial Engineering Research Center of Vegetable Safety and Quality Traceability, No. 266 Xincun Xilu, Zibo, 255049, Shandong Province, China.,Zibo City Key Laboratory of Agricultural Product Safety Traceability, No. 266 Xincun Xilu, Zibo, 255049, Shandong Province, China
| | - Chengchen Pang
- School of Agricultural Engineering and Food Science, Shandong University of Technology, No. 266 Xincun Xilu, Zibo, 255049, Shandong Province, China.,Shandong Provincial Engineering Research Center of Vegetable Safety and Quality Traceability, No. 266 Xincun Xilu, Zibo, 255049, Shandong Province, China.,Zibo City Key Laboratory of Agricultural Product Safety Traceability, No. 266 Xincun Xilu, Zibo, 255049, Shandong Province, China
| | - Yanyan Zhang
- School of Agricultural Engineering and Food Science, Shandong University of Technology, No. 266 Xincun Xilu, Zibo, 255049, Shandong Province, China.,Shandong Provincial Engineering Research Center of Vegetable Safety and Quality Traceability, No. 266 Xincun Xilu, Zibo, 255049, Shandong Province, China.,Zibo City Key Laboratory of Agricultural Product Safety Traceability, No. 266 Xincun Xilu, Zibo, 255049, Shandong Province, China
| | - Xia Sun
- School of Agricultural Engineering and Food Science, Shandong University of Technology, No. 266 Xincun Xilu, Zibo, 255049, Shandong Province, China.,Shandong Provincial Engineering Research Center of Vegetable Safety and Quality Traceability, No. 266 Xincun Xilu, Zibo, 255049, Shandong Province, China.,Zibo City Key Laboratory of Agricultural Product Safety Traceability, No. 266 Xincun Xilu, Zibo, 255049, Shandong Province, China
| | - Yemin Guo
- School of Agricultural Engineering and Food Science, Shandong University of Technology, No. 266 Xincun Xilu, Zibo, 255049, Shandong Province, China.,Shandong Provincial Engineering Research Center of Vegetable Safety and Quality Traceability, No. 266 Xincun Xilu, Zibo, 255049, Shandong Province, China.,Zibo City Key Laboratory of Agricultural Product Safety Traceability, No. 266 Xincun Xilu, Zibo, 255049, Shandong Province, China
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Development of a sensitive and rapid fluorescence polarization immunoassay for high throughput screening eight glucocorticoids in beef. J Pharm Biomed Anal 2022; 214:114719. [DOI: 10.1016/j.jpba.2022.114719] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Revised: 03/02/2022] [Accepted: 03/06/2022] [Indexed: 02/08/2023]
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Yang H, He Q, Eremin SA, Pan J, Zou Y, Cui X, Zhao S. Fluorescence polarization immunoassay for rapid determination of dehydroepiandrosterone in human urine. Anal Bioanal Chem 2021; 413:4459-4469. [PMID: 34137913 DOI: 10.1007/s00216-021-03403-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Revised: 04/14/2021] [Accepted: 05/10/2021] [Indexed: 12/11/2022]
Abstract
In this paper, five fluorescein-labeled dehydroepiandrosterone (DHEA) derivatives (tracers) with different chain lengths between the fluorescein and hapten were synthesized and featured so as to establish a fluorescence polarization immunoassay (FPIA) for DHEA detection in human urine samples with previously prepared polyclonal antibody against DHEA. The outcomes of the structure of tracer on FPIA sensitivity were investigated. Under the optimal condition, the fluorescence polarization value (FP) decreases linearly in DHEA concentration, ranging from 1.6 to 243.3 ng mL-1, with the limit of detection of 1.1 ng mL-1 and IC50 value of 25.1 ng mL-1. Moreover, the developed FPIA was time-saving as it could complete the detection within 3 min. FPIA and commercial enzyme-linked immunosorbent assay kit were both applied to analyze the spiked human urine samples with DHEA. Excellent recoveries (92.1-108.0%) and satisfactory correlation coefficient (R2 = 0.98) were acquired with the two methods, indicating that the developed FPIA was a fast and efficient screening immunoassay with accuracy and sensitivity for DHEA detection in human urine samples. Graphical abstract.
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Affiliation(s)
- Huiyi Yang
- Department of Pharmaceutical Engineering, School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou, 510006, Guangdong, People's Republic of China
| | - Qiyi He
- Department of Pharmaceutical Engineering, School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou, 510006, Guangdong, People's Republic of China
| | - Sergei A Eremin
- Faculty of Chemistry, M. V. Lomonosov Moscow State University, 119991, Moscow, Russia
| | - Junkang Pan
- Department of Pharmaceutical Engineering, School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou, 510006, Guangdong, People's Republic of China
| | - Yikui Zou
- Department of Pharmaceutical Engineering, School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou, 510006, Guangdong, People's Republic of China
| | - Xiping Cui
- Department of Pharmaceutical Engineering, School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou, 510006, Guangdong, People's Republic of China.
| | - Suqing Zhao
- Department of Pharmaceutical Engineering, School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou, 510006, Guangdong, People's Republic of China.
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6
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He Q, Fang Y, Yang H, Shen D, Chen Y, Zhong Y, Li X, Eremin SA, Cui X, Zhao S. Enhanced performance of a surface plasmon resonance-based immunosensor for the detection of glycocholic acid. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2021; 13:1919-1924. [PMID: 33913980 DOI: 10.1039/d1ay00357g] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The concentration of glycocholic acid (GCA) in urine and blood is an important biomarker for liver cancer. Monitoring of GCA depends to a large extent on the availability of appropriate analytical techniques. In this work, based on the immobilization of GCA-OVA onto the sensor chip surface, a label-free competitive inhibition immunoassay for the determination of GCA with the surface plasmon resonance (SPR) technique was developed. The proposed SPR immunosensor is simple to prepare, recyclable and exhibits excellent sensitivity to GCA (a linear range of 13.3-119.4 ng mL-1 and a limit of detection (LOD) of 2.5 ng mL-1), which was 14 times lower than that of the traditional immunoassay. Excellent recoveries and correlation between these two methods were observed (R2 = 0.995). Hence, it can be proved that the SPR immunosensor could be used to achieve rapid and sensitive quantitative detection of GCA in real urine samples and meet clinical needs.
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Affiliation(s)
- Qiyi He
- Department of Pharmaceutical Engineering, School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou 510006, People's Republic of China.
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Skoff RP, Bessert D, Banerjee S, Luo X, Thummel R. Characterization of the Expression of Vacuolar Protein Sorting 11 (Vps11) in Mammalian Oligodendrocytes. ASN Neuro 2021; 13:17590914211009851. [PMID: 33874780 PMCID: PMC8060772 DOI: 10.1177/17590914211009851] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
A founder mutation in human VPS11 (Vacuolar
Protein Sorting 11) was recently linked to a genetic
leukoencephalopathy in Ashkenazi Jews that presents with the classical
features of white matter disorders of the central nervous system
(CNS). The neurological deficits include hypomyelination, hypotonia,
gradual loss of vision, and seizures. However, the cells expressing
the mutation were not identified. Here we describe, using
immunocytochemistry, the strong expression of Vps11 in mouse
oligodendrocytes and, specifically, its localization with Myelin
Associated Glycoprotein (MAG) in the inner tongue of myelin. In
longitudinal sections of myelin, it forms a bead-like structure,
alternating with Myelin Basic Protein (MBP). Immunofluorescent
staining with Vps11 and neurofilament proteins indicates the absence
of Vps11 in axons in vivo. Finally, changes in Vps11
expression are associated with altered proteolipid protein (PLP)
levels based upon mice with duplications or deletions of the
Plp1 gene. To determine potential functional
contributions of Vps11, we combined Vps11 with Platelet Derived Growth
Factor Receptor-α (PDGFRα) in vitro and in
vivo: in both conditions, co-localization of the two
proteins was frequently found in round vesicles of
OPCs/oligodendrocytes, suggesting retrograde transport for degradation
by the endolysosomal system. Neuron-to-glial communication has been
invoked to explain degenerative changes in myelin followed by
degenerative changes in axons, and vice versa; but to our knowledge,
no specific proteins in retrograde transport from the myelin inner
tongue to oligodendrocyte perikarya have been identified. The
identification of mutations in VPS11 and its
localization at the axon-myelin interface should open new avenues of
research.
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Affiliation(s)
- Robert P Skoff
- Department of Ophthalmology, Visual and Anatomical Sciences, 12267Wayne State University School of Medicine, Detroit, Michigan, United States
| | - Denise Bessert
- Department of Ophthalmology, Visual and Anatomical Sciences, 12267Wayne State University School of Medicine, Detroit, Michigan, United States
| | - Shreya Banerjee
- Department of Ophthalmology, Visual and Anatomical Sciences, 12267Wayne State University School of Medicine, Detroit, Michigan, United States
| | - Xixia Luo
- Department of Ophthalmology, Visual and Anatomical Sciences, 12267Wayne State University School of Medicine, Detroit, Michigan, United States
| | - Ryan Thummel
- Department of Ophthalmology, Visual and Anatomical Sciences, 12267Wayne State University School of Medicine, Detroit, Michigan, United States
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Lu M, He Q, Zhong Y, Pan J, Lao Z, Lin M, Wang T, Cui X, Ding J, Zhao S. An ultrasensitive colorimetric assay based on a multi-amplification strategy employing Pt/IrO 2@SA@HRP nanoflowers for the detection of progesterone in saliva samples. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2021; 13:1164-1171. [PMID: 33599661 DOI: 10.1039/d1ay00053e] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Progesterone (P4) belongs to a factor that affects stress response and is a potential carcinogen, and saliva levels are expected to be a standard measurement for clinical diagnosis. In this study, a new type of nanoflower with both recognition functionality and catalytic substrate ability was prepared by copper phosphate, Pt/IrO2 nanocomposites (Pt/IrO2 NPs), streptavidin (SA) and horseradish peroxidase (HRP) via a one-pot co-precipitation strategy. Due to the enhanced catalytic activity and stability of Pt/IrO2@SA@HRP nanoflowers, we developed a powerful and sensitive multiple-catalysis ELISA to monitor progesterone in saliva. Multiple-catalysis ELISA based on a specific antibody and Pt/IrO2@SA@HRP nanoflowers exhibited a linear interval range from 0.217 ng mL-1 to 7.934 ng mL-1. The median inhibitory concentration (IC50) for progesterone is 1.311 ng mL-1 and the limit of detection (LOD = IC10) is 0.076 ng mL-1 in the proposed method. Satisfactory recoveries were in a range of 79.6-107% with an acceptable coefficient of variation (below 10.6%). Results of the multiple-catalysis ELISA and LC-MS/MS had a good coincidence. Our result unraveled that multiple-catalysis ELISA is a potentially serviceable tool for the detection of progesterone in saliva.
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Affiliation(s)
- Minglei Lu
- Department of Pharmaceutical Engineering, School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou 510006, People's Republic of China.
| | - Qiyi He
- Department of Pharmaceutical Engineering, School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou 510006, People's Republic of China.
| | - Yingying Zhong
- Department of Pharmaceutical Engineering, School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou 510006, People's Republic of China.
| | - Junkang Pan
- Department of Pharmaceutical Engineering, School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou 510006, People's Republic of China.
| | - Zhiting Lao
- Department of Pharmaceutical Engineering, School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou 510006, People's Republic of China.
| | - Mingxia Lin
- Department of Pharmaceutical Engineering, School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou 510006, People's Republic of China.
| | - Tiantian Wang
- Department of Pharmaceutical Engineering, School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou 510006, People's Republic of China.
| | - Xiping Cui
- Department of Pharmaceutical Engineering, School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou 510006, People's Republic of China.
| | - Jinlong Ding
- Department of Pharmaceutical Engineering, School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou 510006, People's Republic of China.
| | - Suqing Zhao
- Department of Pharmaceutical Engineering, School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou 510006, People's Republic of China.
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Chen H, Luo K, Zhou Q, Yan Z, Li K. L-lysine-structure-directed MIL-88A and its application in electrochemical sensing of cholylglycine via molecular imprinting technique. Microchem J 2020. [DOI: 10.1016/j.microc.2020.105249] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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10
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Prussian blue nanoparticles with peroxidase-mimicking properties in a dual immunoassays for glycocholic acid. J Pharm Biomed Anal 2020; 187:113317. [PMID: 32416340 DOI: 10.1016/j.jpba.2020.113317] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2019] [Revised: 04/02/2020] [Accepted: 04/14/2020] [Indexed: 12/16/2022]
Abstract
Prussian Blue nanoparticles (PBNPs) were utilized in a lateral flow immunoassay (LFA) and in an indirect competitive nanozyme-linked immunosorbent assay (icELISA), respectively, for their intense blue color and peroxidase (POx) -like activity. The PBNPs with good POx-like activity was linked to the antibody. Under the optimal parameters, both the PBNP-icELISA and PBNP-LFA perform very well. The icELISA has an IC50 value of 190 ng/mL, the working range extends from 29 to 1200 ng/mL, and the limit of detection is 22 ng/mL. The visual cut-off limit is 10 ng/mL. The dual immunoassay was used to quantify glycocholic acid in spiked human urine. Excellent recoveries and correlation between the two methods were observed.
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Wu M, Zhai S, Gao J, Wei D, Xue J, Zhou Y, Li N, Hu L. Diagnosis of hepatocellular carcinoma using a novel anti-glycocholic acid monoclonal antibody-based method. Oncol Lett 2019; 17:3103-3112. [PMID: 30867740 PMCID: PMC6396208 DOI: 10.3892/ol.2019.9943] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2018] [Accepted: 12/05/2018] [Indexed: 02/05/2023] Open
Abstract
Glycocholic acid (GCA) is a novel identified biomarker for hepatocellular carcinoma (HCC). However, clinical pathological study of GCA has not been extensive due to the limited availability of anti-GCA monoclonal antibodies (mAbs) and restricted detection methods. In the present study, using human GCA conjugated with bovine serum albumin as the immunogen to immunize BALB/c mice, a novel anti-GCA mAb was generated and characterized. The isotypes of heavy chain and light chain of anti-GCA mAb were examined to be IgG2a and κ, respectively, with a high affinity constant (2.6×108 mol/l). The anti-GCA mAb binds GCA with high specificity and sensitivity, and the 50% inhibitory rate was 77.09 ng/ml. The present study also established a rapid, sensitive and efficient indirect competitive ELISA analysis using this anti-GCA mAb to detect the level of GCA produced by different HCC cell lines. Therefore, the present study may successfully develop a novel method for early HCC diagnosis, and also provide insights for further research and treatment of HCC.
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Affiliation(s)
- Miao Wu
- Department of Immunology, West China School of Basic Medical Sciences and Forensic Medicine, Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Songhui Zhai
- Department of Pediatrics, West China Second University Hospital, Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Julia Gao
- Department of Immunology, West China School of Basic Medical Sciences and Forensic Medicine, Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Dapeng Wei
- Department of Immunology, West China School of Basic Medical Sciences and Forensic Medicine, Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Jianxin Xue
- Department of Thoracic Oncology, Cancer Center, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Yuxi Zhou
- Department of Pharmacy, Mianyang People's Hospital, Mianyang, Sichuan 621000, P.R. China
| | - Nan Li
- Department of Immunology, West China School of Basic Medical Sciences and Forensic Medicine, Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Lijuan Hu
- Department of Immunology, West China School of Basic Medical Sciences and Forensic Medicine, Sichuan University, Chengdu, Sichuan 610041, P.R. China
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