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Liu X, Wang C, Bai Y, Wang W, Han Y, Cai S, An J, Qu G. Development of a double antibody sandwich ELISA method for the quantitative detection of serum C-reactive protein based on nanobody. Microb Pathog 2024; 190:106615. [PMID: 38521472 DOI: 10.1016/j.micpath.2024.106615] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Revised: 02/29/2024] [Accepted: 03/10/2024] [Indexed: 03/25/2024]
Abstract
In this study, we successfully developed a nanobody-based double antibody sandwich ELISA kit for the detection of clinical serum C-reactive protein (CRP) by using two novel CRP specific nanobodies. The developed method exhibited a linear detection range of approximately 6-200 ng/mL, with a detection limit of 1 ng/mL. Furthermore, the method demonstrated excellent specificity, as there was no cross-reactivity with interfering substances such as total bilirubin and hemoglobin and so on. To assess reproducibility, independent measurements of the samples were conducted under experimental conditions, resulting in intra- and inter-batch coefficients of variation below 10% and a recovery rate of 93%-102%. These results indicate robust reproducibility of the method. To evaluate the performance of the developed kit, we collected 90 clinical samples for correlation analysis with commercial kits. The results showed a high correlation coefficient value (R2) of 0.98, indicating accurate concordance between the developed and commercial kits. In conclusion, our study successfully developed a nanobody-based double antibody sandwich ELISA kit to detect clinical serum CRP. The utilization of nanobodies represents a significant advancement in the field of CRP immunoassay development. The developed kit demonstrates excellent performance characteristics and holds promise for clinical applications.
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Affiliation(s)
- Xin Liu
- Department of Clinical Laboratory, Binzhou Medical University Hospital, Binzhou, 256603, PR China
| | - Changjiang Wang
- Shandong Binzhou Animal Science and Veterinary Medicine Academy, Binzhou, 256600, PR China
| | - Yu Bai
- Department of Clinical Laboratory, Binzhou Medical University Hospital, Binzhou, 256603, PR China
| | - Weichen Wang
- Department of Clinical Laboratory, Binzhou Medical University Hospital, Binzhou, 256603, PR China
| | - Yuchen Han
- Department of Clinical Laboratory, Binzhou Medical University Hospital, Binzhou, 256603, PR China
| | - Shu Cai
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, PR China
| | - Jiajia An
- Department of Clinical Laboratory, Binzhou Medical University Hospital, Binzhou, 256603, PR China.
| | - Guanggang Qu
- Shandong Binzhou Animal Science and Veterinary Medicine Academy, Binzhou, 256600, PR China.
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2
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Abdalla HB, Puhl L, Rivas CA, Wu YC, Rojas P, Trindade-da-Silva CA, Hammock BD, Maddipati KR, Soares MQS, Clemente-Napimoga JT, Kantarci A, Napimoga MH, Van Dyke TE. Modulating the sEH/EETs Axis Restrains Specialized Proresolving Mediator Impairment and Regulates T Cell Imbalance in Experimental Periodontitis. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2024; 212:433-445. [PMID: 38117781 PMCID: PMC10866374 DOI: 10.4049/jimmunol.2300650] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2023] [Accepted: 11/26/2023] [Indexed: 12/22/2023]
Abstract
Epoxyeicosatrienoic acids (EETs) and other epoxy fatty acids are short-acting lipids involved in resolution of inflammation. Their short half-life, due to its metabolism by soluble epoxide hydrolase (sEH), limits their effects. Specialized proresolving mediators (SPMs) are endogenous regulatory lipids insufficiently synthesized in uncontrolled and chronic inflammation. Using an experimental periodontitis model, we pharmacologically inhibited sEH, examining its impact on T cell activation and systemic SPM production. In humans, we analyzed sEH in the gingival tissue of periodontitis patients. Mice were treated with sEH inhibitor (sEHi) and/or EETs before ligature placement and treated for 14 d. Bone parameters were assessed by microcomputed tomography and methylene blue staining. Blood plasma metabololipidomics were carried out to quantify SPM levels. We also determined T cell activation by reverse transcription-quantitative PCR and flow cytometry in cervical lymph nodes. Human gingival samples were collected to analyze sEH using ELISA and electrophoresis. Data reveal that pharmacological sEHi abrogated bone resorption and preserved bone architecture. Metabololipidomics revealed that sEHi enhances lipoxin A4, lipoxin B4, resolvin E2, and resolvin D6. An increased percentage of regulatory T cells over Th17 was noted in sEHi-treated mice. Lastly, inflamed human gingival tissues presented higher levels and expression of sEH than did healthy gingivae, being positively correlated with periodontitis severity. Our findings indicate that sEHi preserves bone architecture and stimulates SPM production, associated with regulatory actions on T cells favoring resolution of inflammation. Because sEH is enhanced in human gingivae from patients with periodontitis and connected with disease severity, inhibition may prove to be an attractive target for managing osteolytic inflammatory diseases.
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Affiliation(s)
- Henrique B. Abdalla
- Department of Applied Oral Sciences, The Forsyth Institute, Cambridge, MA, USA
- Faculdade São Leopoldo Mandic, Campinas, SP, Brazil
| | - Luciano Puhl
- Faculdade São Leopoldo Mandic, Campinas, SP, Brazil
| | - Carla Alvarez Rivas
- Department of Applied Oral Sciences, The Forsyth Institute, Cambridge, MA, USA
- Harvard School of Dental Medicine, Boston, MA, USA
| | - Yu-Chiao Wu
- Department of Applied Oral Sciences, The Forsyth Institute, Cambridge, MA, USA
- Harvard School of Dental Medicine, Boston, MA, USA
| | - Paola Rojas
- Department of Applied Oral Sciences, The Forsyth Institute, Cambridge, MA, USA
| | | | - Bruce D. Hammock
- Department of Entomology and UCD Comprehensive Cancer Center, University of California, Davis, CA, USA
| | | | | | | | - Alpdogan Kantarci
- Department of Applied Oral Sciences, The Forsyth Institute, Cambridge, MA, USA
| | | | - Thomas E. Van Dyke
- Department of Applied Oral Sciences, The Forsyth Institute, Cambridge, MA, USA
- Department of Oral Medicine, Infection, and Immunity, Faculty of Medicine, Harvard University, Boston, MA, USA
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3
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Sun D, Liu X, Bao K, Wu L, Kuang H, Pei H, Chen Q. Nanobody based immunoassay for alpha fetal protein detection using streptavidin-conjugated polymerized horseradish peroxidase for signal amplification. ANAL SCI 2023; 39:2059-2065. [PMID: 37704924 DOI: 10.1007/s44211-023-00423-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2023] [Accepted: 08/28/2023] [Indexed: 09/15/2023]
Abstract
The enzyme-linked immunosorbent assay (ELISA) offers several advantages, including simple operation, high throughput, and low cost, making it an ideal immunoassay method for efficient screening of disease-related biomarkers in clinical samples. However, the traditional colorimetric ELISA has relatively low sensitivity, which promotes the continuous emergence of various novel signal amplification technologies. In this work, we fused the AFP-specific nanobody (A1) with the streptavidin-binding peptide (SBP) to develop a fusion protein (A1-SBP) as biorecognition element in a colorimetric ELISA for detecting AFP. Besides, to further improve the sensitivity of the traditional colorimetric ELISA, the streptavidin-conjugated polymerized horseradish peroxidase (SA-PolyHRP) were selected as a detection probe for signal amplification. The proposed signal enhancement strategy demonstrated a limit of detection (LOD) of 0.597 ng/mL for the SA-polyHRP-based ELISA, which is 7.67-fold lower than that of the traditional SA-HRP-based ELISA without additional steps. Furthermore, the proposed SA-polyHRP-based ELISA showed a good correlation with the detection of clinical samples using the Roche E601 chemiluminescence immunoassay analyzer. Therefore, the proposed signal enhancement strategy is an attractive approach for improving the sensitivity of immunoassay without requiring additional steps.
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Affiliation(s)
- Danyang Sun
- Key Laboratory of Tropical and Vegetables Quality and Safety for State Market Regulation, School of Food Science and Engineering, Hainan University, Haikou, 570228, China
| | - Xing Liu
- Key Laboratory of Tropical and Vegetables Quality and Safety for State Market Regulation, School of Food Science and Engineering, Hainan University, Haikou, 570228, China
| | - Kunlu Bao
- Key Laboratory of Tropical and Vegetables Quality and Safety for State Market Regulation, School of Food Science and Engineering, Hainan University, Haikou, 570228, China
| | - Long Wu
- Key Laboratory of Tropical and Vegetables Quality and Safety for State Market Regulation, School of Food Science and Engineering, Hainan University, Haikou, 570228, China
| | - Huijuan Kuang
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi International Joint Research Center for Oral Diseases, Center for Tissue Engineering, School of Stomatology, The Fourth Military Medical University, Xian, 710299, China
| | - Hua Pei
- Department of Clinical Laboratory, The Second Affiliated Hospital of Hainan Medical University, Haikou, 570311, China
| | - Qi Chen
- National Engineering Research Center for Bioengineering Drugs and the Technologies, Institute of Translational Medicine, Nanchang University, Nanchang, 330031, China.
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4
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Wang Y, Zhang L, Wang P, Liao X, Dai Y, Yu Q, Yu G, Zhang Y, Wei J, Jing Y, Wang J, Chen P, Guo B, Wang J, Wang Y. Enhancing Oriented Immobilization Efficiency: A One-for-Two Organism-Bispecific Nanobody Scaffold for Highly Sensitive Detection of Foodborne Pathogens. Anal Chem 2023; 95:17135-17142. [PMID: 37941297 DOI: 10.1021/acs.analchem.3c04446] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2023]
Abstract
Nanobodies have gained widespread application in immunoassays. However, their small size presents a significant challenge in achieving effective immobilization and optimal sensitivity. Here, we present a novel "one-for-two"-oriented immobilization platform based on an organism-bispecific nanobody (O-BsNb) scaffold, enabling highly sensitive detection of two bacterial pathogens. Through genetic engineering, a bispecific nanobody (BsNb) was engineered, targeting Salmonella spp. and Vibrio parahaemolyticus. The O-BsNb scaffold allowed one nanobody to bind specifically to inactivated bacteria, forming an organism-oriented immobilization platform, while the other served as the capture antibody. Consequently, the O-BsNb bioscaffold-based ELISA (O-ELISA) for individual detection of S. enteritidis and V. parahaemolyticus was established. When compared to the sandwich ELISA utilizing passive immobilization of monovalent nanobodies, the O-ELISA exhibited a remarkable 13.4- and 13.7-fold improvement in LOD for S. enteritidis and V. parahaemolyticus, respectively, highlighting the enhanced immobilization efficacy of the O-ELISA. Furthermore, the feasibility and reproducibility of the assay in practical samples were meticulously evaluated, revealing exemplary performance in terms of recovery precision and assay stability. These findings demonstrate the significant potential of the O-ELISA platform for the sensitive detection of macromolecules, opening new avenues for efficient pathogen identification in foodborne safety and clinical diagnostics.
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Affiliation(s)
- Yueqi Wang
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi 712100, PR China
| | - Liang Zhang
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi 712100, PR China
| | - Peng Wang
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi 712100, PR China
| | - Xingrui Liao
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi 712100, PR China
| | - Yueyan Dai
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi 712100, PR China
| | - Qingyan Yu
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi 712100, PR China
| | - Gege Yu
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi 712100, PR China
| | - Yao Zhang
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi 712100, PR China
| | - Juan Wei
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi 712100, PR China
| | - Yinnan Jing
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi 712100, PR China
| | - Jiamin Wang
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi 712100, PR China
| | - Pengyu Chen
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi 712100, PR China
| | - Bing Guo
- College of Life Sciences, Northwest A&F University, Yangling, Shaanxi 712100, PR China
| | - Jianlong Wang
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi 712100, PR China
| | - Yanru Wang
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi 712100, PR China
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5
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Li Z, Zhang W, Zhang Q, Li P, Tang X. Self-Assembly Multivalent Fluorescence-Nanobody Coupled Multifunctional Nanomaterial with Colorimetric Fluorescence and Photothermal to Enhance Immunochromatographic Assay. ACS NANO 2023; 17:19359-19371. [PMID: 37782130 DOI: 10.1021/acsnano.3c06930] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/03/2023]
Abstract
The multimodal lateral flow immunoassay (LFIA) has provided accurate and reliable results for fast and immediate detection. Nonetheless, multimodal LFIA remains challenging to develop biosensors with high sensitivity and tolerance to matrix interference in agro-food. In this study, we developed a self-assembled multivalent fluorescence-nanobody (Nb26-EGFP-H6) with 16.5-fold and 30-fold higher affinity and sensitivity than a monovalent nanobody (Nb26). Based on the Nb26-EGFP-H6, we synthesized enhanced immune-probes Zn-CN@Nb26-EGFP-H6 by pyrolyzing and oxidizing an imidazolating zeolite framework-8 (ZIF-8) to obtain photothermal metal-carbon nanomaterials (Zn-CN) for immobilizing Nb26-EGFP-H6. The rough and porous structure of Zn-CN with a large surface area facilitates the enrichment and immobilization of antibodies. A trimodal lateral flow immunoassay (tLFIA) with colorimetric, fluorescent, and photothermal triple signal outputs was constructed for the detection of aflatoxin B1 (AFB1) in maize. Attractively, the Zn-CN-based tLFIA's multiplex guarantees accurate and sensitive detection of AFB1, with triple signal detection limits of 0.0012 ng/mL (colorimetric signals), 0.0094 ng/mL (fluorescent signals), and 0.252 ng/mL (photothermal signals). The sensitivity of the trimode immunosensor was 628-fold and 42-fold higher than that of the original Nb26-based ELISA (IC50) and the unimodal LFIA (LOD). This work provides an idea for constructing a sensitive, tolerant matrix and efficient and accurate analytical platform for rapidly detecting AFB1 in food.
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Affiliation(s)
- Zhiqiang Li
- Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture and Rural Affairs; Laboratory of Risk Assessment for Oilseed Products (Wuhan), Ministry of Agriculture and Rural Affairs; Quality Inspection and Test Center for Oilseed Products, Ministry of Agriculture and Rural Affairs; Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, Wuhan 430062, China
| | - Wen Zhang
- Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture and Rural Affairs; Laboratory of Risk Assessment for Oilseed Products (Wuhan), Ministry of Agriculture and Rural Affairs; Quality Inspection and Test Center for Oilseed Products, Ministry of Agriculture and Rural Affairs; Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, Wuhan 430062, China
| | - Qi Zhang
- Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture and Rural Affairs; Laboratory of Risk Assessment for Oilseed Products (Wuhan), Ministry of Agriculture and Rural Affairs; Quality Inspection and Test Center for Oilseed Products, Ministry of Agriculture and Rural Affairs; Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, Wuhan 430062, China
- Food Safety Research Institute, HuBei University, Wuhan 430062, China
- Hubei Hongshan Laboratory, Wuhan, 430070, China
| | - Peiwu Li
- Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture and Rural Affairs; Laboratory of Risk Assessment for Oilseed Products (Wuhan), Ministry of Agriculture and Rural Affairs; Quality Inspection and Test Center for Oilseed Products, Ministry of Agriculture and Rural Affairs; Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, Wuhan 430062, China
- Food Safety Research Institute, HuBei University, Wuhan 430062, China
- Hubei Hongshan Laboratory, Wuhan, 430070, China
- Xianghu Laboratory, Hangzhou, 311231, China
| | - Xiaoqian Tang
- Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture and Rural Affairs; Laboratory of Risk Assessment for Oilseed Products (Wuhan), Ministry of Agriculture and Rural Affairs; Quality Inspection and Test Center for Oilseed Products, Ministry of Agriculture and Rural Affairs; Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, Wuhan 430062, China
- Food Safety Research Institute, HuBei University, Wuhan 430062, China
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6
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He Q, McCoy MR, Qi M, Morisseau C, Yang H, Xu C, Shey R, Goodman MC, Zhao S, Hammock BD. The Generation of a Nanobody-Based ELISA for Human Microsomal Epoxide Hydrolase. Int J Mol Sci 2023; 24:14698. [PMID: 37834144 PMCID: PMC10572367 DOI: 10.3390/ijms241914698] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2023] [Revised: 09/09/2023] [Accepted: 09/26/2023] [Indexed: 10/15/2023] Open
Abstract
A microsomal epoxide hydrolase (mEH) metabolizes in vivo in both xenobiotic and endogenous epoxides associated with signaling function. Findings in patients suggest that mEH might be a biomarker for several diseases, including metastatic cancer and viral hepatitis. To easily quantify mEH, nanobodies specific to the human mEH were isolated from a phage library of llama VHHs. Four unique clones were obtained and used for developing ELISAs. Three formats of double antibody sandwich assays were investigated using different detection strategies. Using PolyHRP, the signal was strongly amplified, yielding a 22-fold lower LOD (12 pg mL-1) than the 'conventional'. To further validate the performance of the immunoassays, human tissue samples were analyzed by nanobody-based ELISAs and compared to the enzyme activities (R2 > 0.95). The results demonstrate that these nanobodies are powerful tools for the quantification of human mEH and could eventually result in a bedside assay.
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Affiliation(s)
- Qiyi He
- Department of Entomology and Nematology and University of California Davis Comprehensive Cancer Center, University of California Davis, Davis, CA 95616, USA; (Q.H.); (M.R.M.); (M.Q.); (C.M.); (H.Y.); (C.X.); (R.S.); (M.C.G.)
- Department of Pharmaceutical Engineering, School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou 510006, China
| | - Mark R. McCoy
- Department of Entomology and Nematology and University of California Davis Comprehensive Cancer Center, University of California Davis, Davis, CA 95616, USA; (Q.H.); (M.R.M.); (M.Q.); (C.M.); (H.Y.); (C.X.); (R.S.); (M.C.G.)
| | - Meng Qi
- Department of Entomology and Nematology and University of California Davis Comprehensive Cancer Center, University of California Davis, Davis, CA 95616, USA; (Q.H.); (M.R.M.); (M.Q.); (C.M.); (H.Y.); (C.X.); (R.S.); (M.C.G.)
| | - Christophe Morisseau
- Department of Entomology and Nematology and University of California Davis Comprehensive Cancer Center, University of California Davis, Davis, CA 95616, USA; (Q.H.); (M.R.M.); (M.Q.); (C.M.); (H.Y.); (C.X.); (R.S.); (M.C.G.)
| | - Huiyi Yang
- Department of Entomology and Nematology and University of California Davis Comprehensive Cancer Center, University of California Davis, Davis, CA 95616, USA; (Q.H.); (M.R.M.); (M.Q.); (C.M.); (H.Y.); (C.X.); (R.S.); (M.C.G.)
- Department of Pharmaceutical Engineering, School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou 510006, China
| | - Chengpeng Xu
- Department of Entomology and Nematology and University of California Davis Comprehensive Cancer Center, University of California Davis, Davis, CA 95616, USA; (Q.H.); (M.R.M.); (M.Q.); (C.M.); (H.Y.); (C.X.); (R.S.); (M.C.G.)
| | - Rachel Shey
- Department of Entomology and Nematology and University of California Davis Comprehensive Cancer Center, University of California Davis, Davis, CA 95616, USA; (Q.H.); (M.R.M.); (M.Q.); (C.M.); (H.Y.); (C.X.); (R.S.); (M.C.G.)
| | - Michael C. Goodman
- Department of Entomology and Nematology and University of California Davis Comprehensive Cancer Center, University of California Davis, Davis, CA 95616, USA; (Q.H.); (M.R.M.); (M.Q.); (C.M.); (H.Y.); (C.X.); (R.S.); (M.C.G.)
| | - Suqing Zhao
- Department of Pharmaceutical Engineering, School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou 510006, China
| | - Bruce D. Hammock
- Department of Entomology and Nematology and University of California Davis Comprehensive Cancer Center, University of California Davis, Davis, CA 95616, USA; (Q.H.); (M.R.M.); (M.Q.); (C.M.); (H.Y.); (C.X.); (R.S.); (M.C.G.)
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7
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Oh YT, Yang J, Morisseau C, He Q, Hammock B, Youn JH. Effects of Individual Circulating FFAs on Plasma and Hepatic FFA Epoxides, Diols, and Epoxide-Diol Ratios as Indices of Soluble Epoxide Hydrolase Activity. Int J Mol Sci 2023; 24:10760. [PMID: 37445935 PMCID: PMC10341844 DOI: 10.3390/ijms241310760] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Revised: 06/22/2023] [Accepted: 06/26/2023] [Indexed: 07/15/2023] Open
Abstract
Oxylipins, oxidation products of unsaturated free fatty acids (FFAs), are involved in various cellular signaling systems. Among these oxylipins, FFA epoxides are associated with beneficial effects in metabolic and cardiovascular health. FFA epoxides are metabolized to diols, which are usually biologically less active, by soluble epoxide hydrolase (sEH). Plasma epoxide-diol ratios have been used as indirect measures of sEH activity. This study was designed to examine the effects of acute elevation of individual plasma FFAs on a variety of oxylipins, particularly epoxides, diols, and their ratios. We tested if FFA epoxide-diol ratios are altered by circulating FFA levels (i.e., substrate availability) independent of sEH activity. Wistar rats received a constant intravenous infusion of olive (70% oleic acid (OA)), safflower seed (72% linoleic acid (LA)), and fish oils (rich in ω-3 FFAs) as emulsions to selectively raise OA, LA, and ω-3 FFAs (eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA)), respectively. As expected, olive, safflower seed, and fish oil infusions selectively raised plasma OA (57%), LA (87%), EPA (70%), and DHA (54%), respectively (p < 0.05 for all). Raising plasma FFAs exerted substrate effects to increase hepatic and plasma epoxide and diol levels. These increases in epoxides and diols occurred to similar extents, resulting in no significant changes in epoxide-diol ratios. These data suggest that epoxide-diol ratios, often used as indices of sEH activity, are not affected by substrate availability or altered plasma FFA levels and that epoxide-diol ratios may be used to compare sEH activity between conditions of different circulating FFA levels.
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Affiliation(s)
- Young Taek Oh
- Department of Physiology and Neuroscience, University of Southern California Keck School of Medicine, 2250 Alcazar Street, CSC 214, Los Angeles, CA 90089, USA;
| | - Jun Yang
- Department of Entomology and Nematology, University of California, Davis, CA 95616, USA; (J.Y.); (C.M.); (Q.H.); (B.H.)
| | - Christophe Morisseau
- Department of Entomology and Nematology, University of California, Davis, CA 95616, USA; (J.Y.); (C.M.); (Q.H.); (B.H.)
| | - Qiyi He
- Department of Entomology and Nematology, University of California, Davis, CA 95616, USA; (J.Y.); (C.M.); (Q.H.); (B.H.)
| | - Bruce Hammock
- Department of Entomology and Nematology, University of California, Davis, CA 95616, USA; (J.Y.); (C.M.); (Q.H.); (B.H.)
| | - Jang H. Youn
- Department of Physiology and Neuroscience, University of Southern California Keck School of Medicine, 2250 Alcazar Street, CSC 214, Los Angeles, CA 90089, USA;
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8
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Wang Y, Morisseau C, Takamura A, Wan D, Li D, Sidoli S, Yang J, Wolan DW, Hammock BD, Kitamura S. PROTAC-Mediated Selective Degradation of Cytosolic Soluble Epoxide Hydrolase Enhances ER Stress Reduction. ACS Chem Biol 2023; 18:884-896. [PMID: 36947831 PMCID: PMC10586715 DOI: 10.1021/acschembio.3c00017] [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: 03/24/2023]
Abstract
Soluble epoxide hydrolase (sEH) is a bifunctional enzyme responsible for lipid metabolism and is a promising drug target. Here, we report the first-in-class PROTAC small-molecule degraders of sEH. Our optimized PROTAC selectively targets the degradation of cytosolic but not peroxisomal sEH, resulting in exquisite spatiotemporal control. Remarkably, our sEH PROTAC molecule has higher potency in cellular assays compared to the parent sEH inhibitor as measured by the significantly reduced ER stress. Interestingly, our mechanistic data indicate that our PROTAC directs the degradation of cytosolic sEH via the lysosome, not through the proteasome. The molecules presented here are useful chemical probes to study the biology of sEH with the potential for therapeutic development. Broadly, our results represent a proof of concept for the superior cellular potency of sEH degradation over sEH enzymatic inhibition, as well as subcellular compartment-selective modulation of a protein by PROTACs.
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Affiliation(s)
- Yuxin Wang
- Department of Entomology and Nematology, and UC Davis Comprehensive Cancer Center, University of California Davis, One Shields Avenue, Davis, CA 95616, United States
| | - Christophe Morisseau
- Department of Entomology and Nematology, and UC Davis Comprehensive Cancer Center, University of California Davis, One Shields Avenue, Davis, CA 95616, United States
| | - Akihiro Takamura
- Department of Molecular Medicine, The Scripps Research Institute, La Jolla, CA 92037 USA
| | - Debin Wan
- Department of Entomology and Nematology, and UC Davis Comprehensive Cancer Center, University of California Davis, One Shields Avenue, Davis, CA 95616, United States
| | - Dongyang Li
- Department of Entomology and Nematology, and UC Davis Comprehensive Cancer Center, University of California Davis, One Shields Avenue, Davis, CA 95616, United States
| | - Simone Sidoli
- Department of Biochemistry, Albert Einstein College of Medicine, Bronx, NY 10461 USA
| | - Jun Yang
- Department of Entomology and Nematology, and UC Davis Comprehensive Cancer Center, University of California Davis, One Shields Avenue, Davis, CA 95616, United States
| | - Dennis W. Wolan
- Department of Molecular Medicine, The Scripps Research Institute, La Jolla, CA 92037 USA
- Department of Integrative Structural and Computational Biology, The Scripps Research Institute, La Jolla, CA 92037 USA
| | - Bruce D. Hammock
- Department of Entomology and Nematology, and UC Davis Comprehensive Cancer Center, University of California Davis, One Shields Avenue, Davis, CA 95616, United States
| | - Seiya Kitamura
- Department of Molecular Medicine, The Scripps Research Institute, La Jolla, CA 92037 USA
- Department of Integrative Structural and Computational Biology, The Scripps Research Institute, La Jolla, CA 92037 USA
- Department of Biochemistry, Albert Einstein College of Medicine, Bronx, NY 10461 USA
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9
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He Q, McCoy MR, Yang H, Lin M, Cui X, Zhao S, Morisseau C, Li D, Hammock BD. Mix-and-Read Nanobody-Based Sandwich Homogeneous Split-Luciferase Assay for the Rapid Detection of Human Soluble Epoxide Hydrolase. Anal Chem 2023; 95:6038-6045. [PMID: 36972550 PMCID: PMC10335774 DOI: 10.1021/acs.analchem.3c00079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/29/2023]
Abstract
The soluble epoxide hydrolase (sEH) is possibly both a marker for and target of numerous diseases. Herein, we describe a homogeneous mix-and-read assay for the detection of human sEH based on using split-luciferase detection coupled with anti-sEH nanobodies. Selective anti-sEH nanobodies were individually fused with NanoLuc Binary Technology (NanoBiT), which consists of a large and small portion of NanoLuc (LgBiT and SmBiT, respectively). Different orientations of the LgBiT and SmBiT-nanobody fusions were expressed and investigated for their ability to reform the active NanoLuc in the presence of the sEH. After optimization, the linear range of the assay could reach 3 orders of magnitude with a limit of detection (LOD) of 1.4 ng/mL. The assay has a high sensitivity to human sEH and reached a similar detection limit to our previously reported conventional nanobody-based ELISA. The procedure of the assay was faster (30 min total) and easy to operate, providing a more flexible and simple way to monitor human sEH levels in biological samples. In general, the immunoassay proposed here offers a more efficient detection and quantification approach that can be easily adapted to numerous macromolecules.
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Affiliation(s)
- Qiyi He
- Department of Entomology and Nematology and UCD Comprehensive Cancer Center, University of California, Davis, Davis, California, 95616, United States
| | - Mark R. McCoy
- Department of Entomology and Nematology and UCD Comprehensive Cancer Center, University of California, Davis, Davis, California, 95616, United States
| | - Huiyi Yang
- Department of Entomology and Nematology and UCD Comprehensive Cancer Center, University of California, Davis, Davis, California, 95616, United States
- Department of Pharmaceutical Engineering, School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou, 510006, China
| | - Mingxia Lin
- Department of Pharmaceutical Engineering, School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou, 510006, China
| | - Xiping Cui
- Department of Pharmaceutical Engineering, School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou, 510006, China
| | - Suqing Zhao
- Department of Pharmaceutical Engineering, School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou, 510006, China
| | - Christophe Morisseau
- Department of Entomology and Nematology and UCD Comprehensive Cancer Center, University of California, Davis, Davis, California, 95616, United States
| | - Dongyang Li
- Department of Entomology and Nematology and UCD Comprehensive Cancer Center, University of California, Davis, Davis, California, 95616, United States
- Laboratory of Agricultural Information Intelligent Sensing, College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, Zhejiang, 310058, China
| | - Bruce D. Hammock
- Department of Entomology and Nematology and UCD Comprehensive Cancer Center, University of California, Davis, Davis, California, 95616, United States
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10
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Paramithiotis S. Molecular Targets for Foodborne Pathogenic Bacteria Detection. Pathogens 2023; 12:pathogens12010104. [PMID: 36678453 PMCID: PMC9865778 DOI: 10.3390/pathogens12010104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 12/30/2022] [Accepted: 01/04/2023] [Indexed: 01/11/2023] Open
Abstract
The detection of foodborne pathogenic bacteria currently relies on their ability to grow on chemically defined liquid and solid media, which is the essence of the classical microbiological approach. Such procedures are time-consuming and the quality of the result is affected by the selectivity of the media employed. Several alternative strategies based on the detection of molecular markers have been proposed. These markers may be cell constituents, may reside on the cell envelope or may be specific metabolites. Each marker provides specific advantages and, at the same time, suffers from specific limitations. The food matrix and chemical composition, as well as the accompanying microbiota, may also severely compromise detection. The aim of the present review article is to present and critically discuss all available information regarding the molecular targets that have been employed as markers for the detection of foodborne pathogens. Their strengths and limitations, as well as the proposed alleviation strategies, are presented, with particular emphasis on their applicability in real food systems and the challenges that are yet to be effectively addressed.
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Affiliation(s)
- Spiros Paramithiotis
- Laboratory of Food Process Engineering, Department of Food Science and Human Nutrition, Agricultural University of Athens, 75 Iera Odos St., 11855 Athens, Greece
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11
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Nguyen N, Morisseau C, Li D, Yang J, Lam E, Woodside DB, Hammock BD, Shih PAB. Soluble Epoxide Hydrolase Is Associated with Postprandial Anxiety Decrease in Healthy Adult Women. Int J Mol Sci 2022; 23:ijms231911798. [PMID: 36233100 PMCID: PMC9569757 DOI: 10.3390/ijms231911798] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Revised: 09/26/2022] [Accepted: 09/27/2022] [Indexed: 11/16/2022] Open
Abstract
The metabolism of bioactive oxylipins by soluble epoxide hydrolase (sEH) plays an important role in inflammation, and sEH may be a risk modifier in various human diseases and disorders. The relationships that sEH has with the risk factors of these diseases remain elusive. Herein, sEH protein expression and activity in white blood cells were characterized before and after a high-fat meal in healthy women (HW) and women with anorexia nervosa (AN). sEH expression and sEH activity were significantly correlated and increased in both groups two hours after consumption of the study meal. Fasting sEH expression and activity were positively associated with body mass index (BMI) in both groups, while an inverse association with age was found in AN only (p value < 0.05). sEH was not associated with anxiety or depression in either group at the fasting timepoint. While the anxiety score decreased after eating in both groups, a higher fasting sEH was associated with a lower postprandial anxiety decrease in HW (p value < 0.05). sEH characterization using direct measurements verified the relationship between the protein expression and in vivo activity of this important oxylipin modulator, while a well-controlled food challenge study design using HW and a clinical control group of women with disordered eating elucidated sEH’s role in the health of adult women.
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Affiliation(s)
- Nhien Nguyen
- Department of Psychiatry, University of California San Diego, San Diego, CA 92037, USA
| | - Christophe Morisseau
- Department of Entomology and Nematology and Comprehensive Cancer Center, University of California, Davis, CA 95616, USA
| | - Dongyang Li
- Department of Entomology and Nematology and Comprehensive Cancer Center, University of California, Davis, CA 95616, USA
| | - Jun Yang
- Department of Entomology and Nematology and Comprehensive Cancer Center, University of California, Davis, CA 95616, USA
| | - Eileen Lam
- Centre for Mental Health, University Health Network, Toronto, ON M5G 2C4, Canada
| | - D. Blake Woodside
- Centre for Mental Health, University Health Network, Toronto, ON M5G 2C4, Canada
| | - Bruce D. Hammock
- Department of Entomology and Nematology and Comprehensive Cancer Center, University of California, Davis, CA 95616, USA
| | - Pei-an Betty Shih
- Department of Psychiatry, University of California San Diego, San Diego, CA 92037, USA
- Correspondence: ; Tel.: +1-858-534-0828
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12
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Development of a self-assembled heptameric nanobody/streptavidin-binding peptide fusion for ultrasensitive detection of serum biomarkers. Microchem J 2022. [DOI: 10.1016/j.microc.2022.107723] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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13
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Zeng K, Chen B, Li Y, Meng H, Wu Q, Yang J, Liang H. Gold nanoparticle‐carbon nanotube nanohybrids with peroxidase‐like activity for the highly‐sensitive immunoassay of kanamycin in milk. Int J Food Sci Technol 2022. [DOI: 10.1111/ijfs.15955] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Kun Zeng
- School of the Environment and Safety Engineering Jiangsu University Zhenjiang Jiangsu 212013 China
| | - Bin Chen
- School of the Environment and Safety Engineering Jiangsu University Zhenjiang Jiangsu 212013 China
| | - Yuxin Li
- School of the Environment and Safety Engineering Jiangsu University Zhenjiang Jiangsu 212013 China
| | - Hui Meng
- School of the Environment and Safety Engineering Jiangsu University Zhenjiang Jiangsu 212013 China
| | - Qinyan Wu
- Zhenjiang Academy of Agricultural Sciences Zhenjiang Jiangsu 212013 China
| | - Jian Yang
- School of the Environment and Safety Engineering Jiangsu University Zhenjiang Jiangsu 212013 China
| | - Hongfang Liang
- Zhenjiang Academy of Agricultural Sciences Zhenjiang Jiangsu 212013 China
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14
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Singh N, Li D, McReynolds CB, Morisseau C, Hammock BD. Improved ELISA for linoleate-derived diols in human plasma utilizing a polyHRP-based secondary tracer. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2022; 14:1810-1819. [PMID: 35481804 PMCID: PMC9116231 DOI: 10.1039/d2ay00272h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
Dihydroxyoctadecenoic acids (DiHOMEs) are cytochrome P450 pathway-derived metabolites of linoleic acid, a highly abundant dietary fatty acid. They serve thermogenic functions at low concentrations but, at high concentrations, are involved in proinflammatory and deleterious outcomes in a wide range of pathologies. Hence, the development of a reliable analytical method is critical to elucidate their potential as biomarkers of health, and enzyme-linked immunoassay (ELISA)-based approaches offer unique benefits as alternatives to traditional liquid chromatography-tandem mass spectrometry (LC-MS/MS) systems. Accordingly, an earlier ELISA for DiHOMEs was dramatically improved employing new secondary tracers and geared towards use in human plasma, a universal matrix in biomedical applications, as well as urine. Three ELISA formats, two utilizing polyHRP-based secondary labels for signal amplification, were compared. The best format involved a biotinylated detection antibody and a polyHRP-conjugated streptavidin tracer. Assay detectability was enhanced 20-fold, relative to the original immunoassay, and performance assessments validated precision, selectivity, and robustness. Fast and easy extraction-clean up steps yielded high analytical recovery and permitted the assay to operate in moderate concentrations (up to 20%) of plasma, expanding its practical relevance. Finally, the ELISA was applied towards detection of DiHOMEs in clinical samples and authenticated with complementary LC-MS/MS analysis. Hence, the method provides a valuable analytical tool to investigate the diverse and extensive roles of DiHOMEs in regulatory biology.
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Affiliation(s)
- Nalin Singh
- Department of Entomology and Nematology, UC Davis Comprehensive Cancer Center, University of California Davis, Davis, California, 95616, USA.
| | - Dongyang Li
- Department of Entomology and Nematology, UC Davis Comprehensive Cancer Center, University of California Davis, Davis, California, 95616, USA.
| | - Cindy B McReynolds
- Department of Entomology and Nematology, UC Davis Comprehensive Cancer Center, University of California Davis, Davis, California, 95616, USA.
| | - Christophe Morisseau
- Department of Entomology and Nematology, UC Davis Comprehensive Cancer Center, University of California Davis, Davis, California, 95616, USA.
| | - Bruce D Hammock
- Department of Entomology and Nematology, UC Davis Comprehensive Cancer Center, University of California Davis, Davis, California, 95616, USA.
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15
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Liu J, Ruan G, Ma W, Sun Y, Yu H, Xu Z, Yu C, Li H, Zhang CW, Li L. Horseradish peroxidase-triggered direct in situ fluorescent immunoassay platform for sensing cardiac troponin I and SARS-CoV-2 nucleocapsid protein in serum. Biosens Bioelectron 2022; 198:113823. [PMID: 34838374 PMCID: PMC8606172 DOI: 10.1016/j.bios.2021.113823] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Revised: 10/27/2021] [Accepted: 11/18/2021] [Indexed: 12/12/2022]
Abstract
Direct in situ fluorescent enzyme-linked immunosorbent assay (ELISA) is rarely investigated and reported. Herein, a direct in situ high-performance HRP-labeled fluorescent immunoassay platform was constructed. The platform was developed based on a rapid in situ fluorogenic reaction between Polyethyleneimine (PEI) and p-Phenylenediamine (PPD) analogues to generate fluorescent copolymer nanoparticles (FCNPs). The formation mechanism of FCNPs was found to be the oxidation of •OH radicals, which was further proved by nitrogen protection and scavenger of •OH radicals. Meantime, the fluorescence wavelength of FCNPs could be adjusted from 471 to 512 nm by introducing various substitution groups into the PPD structure. Using cardiac troponin I (cTnI) and SARS-CoV-2 nucleocapsid protein (N-protein) as the model antigens, the proposed fluorescent ELISA exhibited a wide dynamic range of 5-180 ng/mL and a low limit of detection (LOD) of 0.19 ng/mL for cTnI, and dynamic range of 0-120 ng/mL and a LOD of 0.33 ng/mL for SARS-CoV-2 N protein, respectively. Noteworthy, the proposed method was successful applied to evaluate the cTnI and SARS-CoV-2 N protein levels in serum with satisfied results. Therefore, the proposed platform paved ways for developing novel fluorescence-based HRP-labeled ELISA technologies and broadening biomarker related clinical diagnostics.
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Affiliation(s)
- Jinhua Liu
- Institute of Advanced Materials (IAM), Key Laboratory of Flexible Electronics (KLOFE) Nanjing Tech University, 30 South Puzhu Road, Nanjing, 211816, China.
| | - Guotong Ruan
- Institute of Advanced Materials (IAM), Key Laboratory of Flexible Electronics (KLOFE) Nanjing Tech University, 30 South Puzhu Road, Nanjing, 211816, China
| | - Wenlin Ma
- Institute of Advanced Materials (IAM), Key Laboratory of Flexible Electronics (KLOFE) Nanjing Tech University, 30 South Puzhu Road, Nanjing, 211816, China
| | - Yujie Sun
- Institute of Advanced Materials (IAM), Key Laboratory of Flexible Electronics (KLOFE) Nanjing Tech University, 30 South Puzhu Road, Nanjing, 211816, China
| | - Haidong Yu
- Frontiers Science Center for Flexible Electronics, Xi'an Institute of Flexible Electronics (IFE) and Xi'an Institute of Biomedical Materials & Engineering Northwestern Polytechnical University, Xi'an, 710072, PR China
| | - Zhihui Xu
- Department of Cardiology, The First Affiliated Hospital of Nanjing Medical University, 300 Guangzhou Road, Nanjing, 210029, PR China
| | - Changmin Yu
- Institute of Advanced Materials (IAM), Key Laboratory of Flexible Electronics (KLOFE) Nanjing Tech University, 30 South Puzhu Road, Nanjing, 211816, China
| | - Hai Li
- Institute of Advanced Materials (IAM), Key Laboratory of Flexible Electronics (KLOFE) Nanjing Tech University, 30 South Puzhu Road, Nanjing, 211816, China
| | - Cheng-Wu Zhang
- School of Basic Medical Sciences, Shanxi Medical University, Xinjian Road, Taiyuan, 310003, PR China.
| | - Lin Li
- Institute of Advanced Materials (IAM), Key Laboratory of Flexible Electronics (KLOFE) Nanjing Tech University, 30 South Puzhu Road, Nanjing, 211816, China.
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16
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Enhancing the detection sensitivity of nanobody against aflatoxin B 1 through structure-guided modification. Int J Biol Macromol 2022; 194:188-197. [PMID: 34863829 DOI: 10.1016/j.ijbiomac.2021.11.182] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Revised: 11/25/2021] [Accepted: 11/26/2021] [Indexed: 11/24/2022]
Abstract
Nanobodies (Nbs) have shown great potential in immunodetection of small-molecule contaminants in food and environmental monitoring. However, the limited knowledge of the mechanism of Nbs binding to small molecules has hampered the development of high-affinity Nbs and assay improvement. We previously reported two homologous nanobodies Nb26 and Nb28 specific to aflatoxin B1 (AFB1), with the former exhibiting higher sensitivity in ELISA. Herein, Nb26 was selected as the model antibody to resolve its solution nuclear magnetic resonance (NMR) structure, and investigate its AFB1 recognition mechanism. The results revealed that Nb26 exhibits a typical immunoglobulin fold and its AFB1-binding interface is uniquely located in complementarity-determining region 3 (CDR3) and framework region 2 (FR2). This finding was applied to improve the binding activity of Nb28 against AFB1 by constructing two Nb28-based mutants A50V and S102D, resulting in 2.3- and 3.3-fold sensitivity enhancement over the wild type, respectively. This study develops an NMR-based strategy to analyze the underlying mechanism of Nb against AFB1, and successfully generated two site-modified Nbs with improved detection sensitivity. It is believed that this work could greatly expand the applications of Nbs by providing a way to enhance the binding activity.
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17
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Asaadi Y, Jouneghani FF, Janani S, Rahbarizadeh F. A comprehensive comparison between camelid nanobodies and single chain variable fragments. Biomark Res 2021; 9:87. [PMID: 34863296 PMCID: PMC8642758 DOI: 10.1186/s40364-021-00332-6] [Citation(s) in RCA: 61] [Impact Index Per Article: 20.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2021] [Accepted: 09/22/2021] [Indexed: 12/24/2022] Open
Abstract
By the emergence of recombinant DNA technology, many antibody fragments have been developed devoid of undesired properties of natural immunoglobulins. Among them, camelid heavy-chain variable domains (VHHs) and single-chain variable fragments (scFvs) are the most favored ones. While scFv is used widely in various applications, camelid antibodies (VHHs) can serve as an alternative because of their superior chemical and physical properties such as higher solubility, stability, smaller size, and lower production cost. Here, these two counterparts are compared in structure and properties to identify which one is more suitable for each of their various therapeutic, diagnosis, and research applications.
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Affiliation(s)
- Yasaman Asaadi
- Department of Biotechnology, College of Science, University of Tehran, Tehran, Iran
| | - Fatemeh Fazlollahi Jouneghani
- Department of Cell & Molecular Biology, Faculty of Life Sciences and Biotechnology, Shahid Beheshti University, Tehran, Iran
| | - Sara Janani
- Department of Cell & Molecular Biology, Faculty of Life Sciences and Biotechnology, Shahid Beheshti University, Tehran, Iran
| | - Fatemeh Rahbarizadeh
- Department of Medical Biotechnology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran.
- Research and Development Center of Biotechnology, Tarbiat Modares University, Tehran, Iran.
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18
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Development of enzyme-free single-step immunoassays for glycocholic acid based on palladium nanoparticle-mediated signal generation. Anal Bioanal Chem 2021; 413:5733-5742. [PMID: 34476526 DOI: 10.1007/s00216-021-03548-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2021] [Revised: 06/12/2021] [Accepted: 07/13/2021] [Indexed: 10/20/2022]
Abstract
Palladium nanoparticles (PdNPs) are composed mainly of inert noble metals, and their outstanding properties have attracted wide attention. PdNPs are not only capable of mimicking the oxidase-like characteristics of natural bio-enzymes, but they also present a clear black band in the test zone. In this work, the synthesized PdNPs promoted a transformation of colorless tetramethylbenzidine (TMB) to a blue oxidation product of TMB, providing a Km value of 0.09 mM for TMB, and revealing the good catalytic performance of the synthesized PdNPs. For both signal generation and amplification, PdNPs effectively replaced natural bio-enzymes as a new labeling tag. Thus, the PdNP-based enzyme-free single-step immunoassays were successfully developed for efficient and sensitive detection of glycocholic acid (GCA). Under optimal conditions, a noticeable linear relationship was identified by the enzyme-linked immunosorbent assay (ELISA) over a range of 8-2390 ng/mL, while the visual limit of detection (vLOD) in the constructed lateral flow immunoassay (LFA) was 10 ng/mL for GCA. The recovery rate in spiked urine samples obtained by the ELISA ranged from 84.2 to 117.9%, which was consistent with the results in LFA. The present work demonstrates the potential of PdNPs as labeling matrices in enzyme-free single-step immunoassays.
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19
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Yu S, Li Z, Li J, Zhao S, Wu S, Liu H, Bi X, Li D, Dong J, Duan S, Hammock BD. Generation of Dual functional Nanobody-Nanoluciferase Fusion and its potential in Bioluminescence Enzyme Immunoassay for trace Glypican-3 in Serum. SENSORS AND ACTUATORS. B, CHEMICAL 2021; 336:129717. [PMID: 35250176 PMCID: PMC8896807 DOI: 10.1016/j.snb.2021.129717] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Glypican-3 (GPC3) is a serological biomarker for the diagnosis of Hepatocellular carcinoma (HCC), but it is a challenging task to develop a bioassay for determination of the trace GPC3 in serum. In this study, Bioluminescense immunoassay based on bifunctional nanobody-nanoluciferase fusion was developed with the ultra-sensitive feature to achieve this goal. First, nanobodies special against GPC-3 binder as biological recognition element were generated by immunization and phage display technology. Second, The best clone GPN2 was fused with nanoluciferase as a dual-functional immunoreagent to establish an ultra-sensitive bioluminescence enzyme immunoassay (BLEIA), which is 30 and 5 times more sensitive than the traditional colorimetric assay and fluorescent assay, respectively. The cross-reactivity analysis of BLEIA showed that there was no cross-reactivity with HCC related tumor markers AFP, CEA, CA19-9 and GPC1/GPC2. The limit of detection (LOD) of developed BLEIA was 1.5 ng/mL, which assured its application in the diagnosis of GPC3 in 94 serum samples. This study indicates that BLEIA based on nanobody-nanoluciferase fusion could be used as a useful tool for the diagnosis of HCC patients.
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Affiliation(s)
- Sheng Yu
- Medical College, Guangxi University of Science and Technology, Liuzhou, Guangxi, 545005, China
- The Second Clinical Medical College of Guangxi University of Science and Technology, Liuzhou, Guangxi, 545005, China
- The Second Affiliated Hospital of Guangxi University of Science and Technology, Liuzhou, Guangxi, 545005, China
| | - Zhenfeng Li
- Department of Entomology and Nematology and UCD Comprehensive Cancer Center, University of California, Davis, California 95616
| | - Jingzhang Li
- Liuzhou People’s Hospital, Liuzhou, Guangxi, 545005, China
| | - Shimei Zhao
- Medical College, Guangxi University of Science and Technology, Liuzhou, Guangxi, 545005, China
| | - Shanguang Wu
- Medical College, Guangxi University of Science and Technology, Liuzhou, Guangxi, 545005, China
| | - Hongjing Liu
- Medical College, Guangxi University of Science and Technology, Liuzhou, Guangxi, 545005, China
| | - Xiongjie Bi
- The First Affiliated Hospital of Guangxi University of Science and Technology, Liuzhou, Guangxi, 545005, China
| | - Dongyang Li
- Department of Entomology and Nematology and UCD Comprehensive Cancer Center, University of California, Davis, California 95616
| | - Jiexian Dong
- Department of Entomology and Nematology and UCD Comprehensive Cancer Center, University of California, Davis, California 95616
- Research Center for Innovative Anti-Cancer Drugs, Research Institute of Tsinghua University in Shenzhen, Shenzhen 518057, China
- Corresponding author: Siliang Duan, and Jiexian Dong,
| | - Siliang Duan
- Medical College, Guangxi University of Science and Technology, Liuzhou, Guangxi, 545005, China
- Corresponding author: Siliang Duan, and Jiexian Dong,
| | - Bruce D. Hammock
- Department of Entomology and Nematology and UCD Comprehensive Cancer Center, University of California, Davis, California 95616
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20
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Morisseau C, Kodani SD, Kamita SG, Yang J, Lee KSS, Hammock BD. Relative Importance of Soluble and Microsomal Epoxide Hydrolases for the Hydrolysis of Epoxy-Fatty Acids in Human Tissues. Int J Mol Sci 2021; 22:ijms22094993. [PMID: 34066758 PMCID: PMC8125816 DOI: 10.3390/ijms22094993] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Revised: 05/03/2021] [Accepted: 05/04/2021] [Indexed: 01/03/2023] Open
Abstract
Epoxy-fatty acids (EpFAs) are endogenous lipid mediators that have a large breadth of biological activities, including the regulation of blood pressure, inflammation, angiogenesis, and pain perception. For the past 20 years, soluble epoxide hydrolase (sEH) has been recognized as the primary enzyme for degrading EpFAs in vivo. The sEH converts EpFAs to the generally less biologically active 1,2-diols, which are quickly eliminated from the body. Thus, inhibitors of sEH are being developed as potential drug therapeutics for various diseases including neuropathic pain. Recent findings suggest that other epoxide hydrolases (EHs) such as microsomal epoxide hydrolase (mEH) and epoxide hydrolase-3 (EH3) can contribute significantly to the in vivo metabolism of EpFAs. In this study, we used two complementary approaches to probe the relative importance of sEH, mEH, and EH3 in 15 human tissue extracts: hydrolysis of 14,15-EET and 13,14-EDP using selective inhibitors and protein quantification. The sEH hydrolyzed the majority of EpFAs in all of the tissues investigated, mEH hydrolyzed a significant portion of EpFAs in several tissues, whereas no significant role in EpFAs metabolism was observed for EH3. Our findings indicate that residual mEH activity could limit the therapeutic efficacy of sEH inhibition in certain organs.
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21
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Pan MM, Wang YF, Wang L, Yu X, Xu L. Recent advances in visual detection for cancer biomarkers and infectious pathogens. J Mater Chem B 2021; 9:35-52. [PMID: 33225338 DOI: 10.1039/d0tb01883j] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
It is an urgency to detect infectious pathogens or cancer biomarkers using rapid, simple, convenient and cost-effective methods in complex biological samples. Many existing approaches (traditional virus culture, ELISA or PCR) for the pathogen and biomarker assays face several challenges in the clinical applications that require lengthy time, sophisticated sample pre-treatment and expensive instruments. Due to the simple and rapid detection manner as well as no requirement of expensive equipment, many visual detection methods have been considered to resolve the aforementioned problems. Meanwhile, various new materials and colorimetric/fluorescent methods have been tried to construct new biosensors for infectious pathogens and biomarkers. However, the recent progress of these aspects is rarely reviewed, especially in terms of integration of new materials, microdevice and detection mechanism into the visual detection systems. Herein, we provide a broad field of view to discuss the recent progress in the visual detection of infectious pathogens and cancer biomarkers along with the detection mechanism, new materials, novel detection methods, special targets as well as multi-functional microdevices and systems. The novel visual approaches for the infectious pathogens and biomarkers, such as bioluminescence resonance energy transfer (BRET), metal-induced metallization and clustered regularly interspaced short palindromic repeats (CRISPR)-based biosensors, are discussed. Additionally, recent advancements in visual assays utilizing various new materials for proteins, nucleic acids, viruses, exosomes and small molecules are comprehensively reviewed. Future perspectives on the visual sensing systems for infectious pathogens and cancers are also proposed.
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Affiliation(s)
- Meng-Meng Pan
- Tongji School of Pharmacy, HuaZhong University of Science and Technology, Wuhan 430030, China.
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22
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Wang Z, Li Z, Su T, Han X, Hou Z, Zheng Y, Liu J, Xu J, Yang J, Liu H. BirA*-protein A fusion protein based BioEnhancer amplifies western blot immunosignal. Electrophoresis 2021; 42:793-799. [PMID: 33354816 DOI: 10.1002/elps.202000167] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Revised: 12/13/2020] [Accepted: 12/15/2020] [Indexed: 11/08/2022]
Abstract
Western blot (protein immunoblot) is a widely used analytical technique in molecular biology. Utilizing the specific recognizing primary antibody, proteins immobilized on various matrix are investigated by subsequent visualization steps, for example, by the horse radish peroxidase conjugated secondary antibody incubation. Methods to improve the sensitivity in protein identification or quantification are appreciated by biochemists. Herein, we report a new strategy to amplify Western blot signals by constructing a probe with proximal labeling and IgG targeting abilities. The R118G mutation attenuated the biotin-AMP binding affinity of the bacterial biotin ligase BirA*, offering a proximity-dependent labeling ability, which could be used as a signal amplifier. We built a BirA*-protein A fusion protein (BioEnhancer) that specifically binds to IgG and adds biotin tags to its proximal amine groups, enhancing the immunosignal of target proteins. In our experiments, the BioEnhancer system amplified the immunosignal by tenfold compared to the standard western blot. Additionally, our strategy could couple with other signal enhancement methods to further increase the western blot sensitivity.
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Affiliation(s)
- Zhen Wang
- Center for Mitochondrial Biology and Medicine, The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science, Xi'an Jiaotong University, Xi'an, P. R. China
| | - Ziyang Li
- Center for Mitochondrial Biology and Medicine, The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science, Xi'an Jiaotong University, Xi'an, P. R. China
| | - Tian Su
- Center for Mitochondrial Biology and Medicine, The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science, Xi'an Jiaotong University, Xi'an, P. R. China
| | - Xiao Han
- Center for Mitochondrial Biology and Medicine, The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science, Xi'an Jiaotong University, Xi'an, P. R. China
| | - Zhanwu Hou
- Center for Mitochondrial Biology and Medicine, The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science, Xi'an Jiaotong University, Xi'an, P. R. China
| | - Yupeng Zheng
- Center for Mitochondrial Biology and Medicine, The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science, Xi'an Jiaotong University, Xi'an, P. R. China
| | - Jiachen Liu
- Center for Mitochondrial Biology and Medicine, The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science, Xi'an Jiaotong University, Xi'an, P. R. China
| | - Jun Xu
- Center for Mitochondrial Biology and Medicine, The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science, Xi'an Jiaotong University, Xi'an, P. R. China
| | - Jeffy Yang
- Sulich Medicine and Dentistry, Western University, London, Canada
| | - Huadong Liu
- Center for Mitochondrial Biology and Medicine, The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science, Xi'an Jiaotong University, Xi'an, P. R. China
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23
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Li D, Cui Y, Morisseau C, Wagner KM, Cho YS, Hammock BD. Development of a Highly Sensitive Enzyme-Linked Immunosorbent Assay for Mouse Soluble Epoxide Hydrolase Detection by Combining a Polyclonal Capture Antibody with a Nanobody Tracer. Anal Chem 2020; 92:11654-11663. [PMID: 32786492 DOI: 10.1021/acs.analchem.0c01511] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Enzyme-linked immunosorbent assays (ELISA) for the detection of soluble epoxide hydrolase (sEH), a key enzyme in the metabolism of fatty acids and a biomarker, may increasingly represent an important diagnostic tool. However, there is a lack of ELISAs for mouse sEH quantification, thus resulting in a bottleneck in understanding the pathogenesis of many diseases related to sEH based on mouse models. In this work, nanobodies recognizing mouse sEH were obtained through rebiopanning against mouse sEH in the previous phage display library of human sEH. Later, we developed four ELISAs involving a combination of anti-mouse sEH polyclonal antibodies (pAbs) and nanobodies. It was found that the double antibodies worked as dual filters and had a huge impact on both the sensitivity and selectivity of sandwich immunoassays. The switch from anti-human sEH pAbs to anti-mouse sEH pAbs led to over a 100-fold increase in the sensitivity and a dramatic decrease of the limit of detection to a picogram per milliliter range in format B (pAb/biotin-VHH/streptavidin-poly-horseradish peroxidase). Moreover, we found that the four sandwich ELISAs might demonstrate excellent selectivities to mouse sEH, despite the antibodies alone showing significant cross-reactivity to the matrix, indicating the enhanced selectivity of double antibodies as dual filters. Eventually, for the first time, the ELISA (format B) was successfully used to measure the mouse sEH level in cancer cells with ultralow abundances. The ELISAs proposed here represent a sensitive tool for tracking sEH in various biological processes and also provide deep insights into developing sandwich immunoassays against various targets in terms of both the sensitivity and selectivity.
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Affiliation(s)
- Dongyang Li
- Department of Entomology and Nematology, University of California, Davis, Comprehensive Cancer Center, University of California, Davis, Davis, California 95616, United States
| | - Yongliang Cui
- Department of Entomology and Nematology, University of California, Davis, Comprehensive Cancer Center, University of California, Davis, Davis, California 95616, United States.,Citrus Research Institute, Southwest University and National Citrus Engineering Research Center, Chongqing 400712, China
| | - Christophe Morisseau
- Department of Entomology and Nematology, University of California, Davis, Comprehensive Cancer Center, University of California, Davis, Davis, California 95616, United States
| | - Karen M Wagner
- Department of Entomology and Nematology, University of California, Davis, Comprehensive Cancer Center, University of California, Davis, Davis, California 95616, United States
| | - Young Sik Cho
- Department of Entomology and Nematology, University of California, Davis, Comprehensive Cancer Center, University of California, Davis, Davis, California 95616, United States.,Department of Pharmacy, Keimyung University, Daegu 42601, South Korea
| | - Bruce D Hammock
- Department of Entomology and Nematology, University of California, Davis, Comprehensive Cancer Center, University of California, Davis, Davis, California 95616, United States
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24
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Liu X, Wen Y, Wang W, Zhao Z, Han Y, Tang K, Wang D. Nanobody-based electrochemical competitive immunosensor for the detection of AFB1 through AFB1-HCR as signal amplifier. Mikrochim Acta 2020. [DOI: https://doi.org/10.1007/s00604-020-04343-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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25
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Liu X, Wen Y, Wang W, Zhao Z, Han Y, Tang K, Wang D. Nanobody-based electrochemical competitive immunosensor for the detection of AFB 1 through AFB 1-HCR as signal amplifier. Mikrochim Acta 2020; 187:352. [PMID: 32462392 DOI: 10.1007/s00604-020-04343-2] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2020] [Accepted: 05/18/2020] [Indexed: 02/07/2023]
Abstract
A novel nanobody (Nb)-based voltammetric immunosensor coupled with horseradish peroxidase concatemer-modified hybridization chain reaction (HRP-HCR) signal amplifying system is described to realize the rapid and ultrasensitive detection of AFB1. To design such an immunoassay, anti-AFB1 Nbs with smaller molecular size were coated densely onto the surface of Au nanoparticle-tungsten disulfide-multi-walled carbon nanotubes (AuNPs/WS2/MWCNTs) functional nanocomposites as an effective molecular recognition element, whereas AFB1-streptavidin (AFB1-SA) conjugates were ingeniously bound with biotinylated HCR dsDNA nanostructures as the competitor, amplifier, and signal report element. In the presence of AFB1 targets, a competitive immunoreaction was performed between the analyte and AFB1-SA-labeled HCR (AFB1-HCR) platform. Upon the addition of SA-modified polyHRP (SA-polyHRP), AFB1-HCR nanostructures containing abundant biotins were allowed to cross-link to a quantity of HRP by streptavidin-biotin chemistry for signal amplification and signal conversion. Under optimal conditions, the immunosensor displayed a good linear correlation toward AFB1 ranging from 0.5 to 10 ng mL-1 with a sensitivity of 2.7 μA • (mL ng-1) and an ultralow limit of detection (LOD) of 68 fg mL-1. The specificity test showed that the AFB1 immunosensor had no obvious cross-reaction with OTA, DON, ZEN, and FB1. The signal of this sensor decreased by 10.18% in 4 weeks indicating satisfactory stability, and its intra- and inter-laboratory reproducibility was 3.42~10.35% and 4.03%~12.11%, respectively. This biosensing system will open up new opportunities for the detection of AFB1 in food safety and environmental analysis and extend a wide range of applications in the analysis of other small molecules. Graphical abstract.
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Affiliation(s)
- Xin Liu
- Key Lab for Agro-product Processing and Quality Control of Nanchang City, College of Food Science and Engineering, Jiangxi Agricultural University, Nanchang, 330045, China
- Department of Biomedical Engineering, Biosensor National Special Laboratory, Key Laboratory of Biomedical Engineering of Ministry of Education, Zhejiang University, Hangzhou, 310027, China
| | - Yangping Wen
- Institute of Functional Materials and Agricultural Applied Chemistry, Jiangxi Agricultural University, Nanchang, 330045, China
| | - Wenjun Wang
- Key Lab for Agro-product Processing and Quality Control of Nanchang City, College of Food Science and Engineering, Jiangxi Agricultural University, Nanchang, 330045, China.
| | - Zitong Zhao
- Key Lab for Agro-product Processing and Quality Control of Nanchang City, College of Food Science and Engineering, Jiangxi Agricultural University, Nanchang, 330045, China
| | - Yi Han
- Key Lab for Agro-product Processing and Quality Control of Nanchang City, College of Food Science and Engineering, Jiangxi Agricultural University, Nanchang, 330045, China
| | - Kaijie Tang
- Key Lab for Agro-product Processing and Quality Control of Nanchang City, College of Food Science and Engineering, Jiangxi Agricultural University, Nanchang, 330045, China
| | - Dan Wang
- Key Lab for Agro-product Processing and Quality Control of Nanchang City, College of Food Science and Engineering, Jiangxi Agricultural University, Nanchang, 330045, China.
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26
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Ji Y, Li X, Lu Y, Guo P, Zhang G, Wang Y, Zhang Y, Zhu W, Pan J, Wang J. Nanobodies Based on a Sandwich Immunoassay for the Detection of Staphylococcal Enterotoxin B Free from Interference by Protein A. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2020; 68:5959-5968. [PMID: 32374597 DOI: 10.1021/acs.jafc.0c00422] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
As one of the leading causes of food poisoning, staphylococcal enterotoxins (SEs) secreted by Staphylococcus aureus pose a serious threat to human health. The immunoassay has become the dominant tool used for the rapid detection of harmful bacteria and toxins as a result of its excellent specificity. However, with regard to SEs, staphylococcal protein A (SpA) is likely to bind with the fragment crystallizable (Fc) terminal of the traditional antibody and result in a false positive, limiting the practical application of this method. Therefore, to eliminate the bottleneck problem, the sandwich immunoassay was development by replacing the traditional antibody with a nanobody (Nb) that lacked a Fc terminal. Using 0.5 × 107 colony-forming units, the Nb library was constructed using Bactrian camels immunized with staphylococcal enterotoxin B (SEB) to obtain a paired Nb against SEB with good affinity. A sandwich enzyme-linked immunosorbent assay (ELISA) was developed using one Nb as the capture antibody and a phage-displayed Nb with signal-amplifying properties as the detection antibody. In optimal conditions, the current immunoassay displayed a broad quantitative range from 1 to 512 ng/mL and a 0.3 ng/mL limit of detection. The recovery of spiked milk, milk powder, cheese, and beef ranged from 87.66 to 114.2%. The Nbs-ELISA was not influenced by SpA during the detection of SEB in S. aureus food poisoning. Therefore, the Nb developed here presented the perfect candidates for immunoassay application during SE determination as a result of the complete absence of SpA interference.
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Affiliation(s)
- Yanwei Ji
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi 712100, People's Republic of China
| | - Xiang Li
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi 712100, People's Republic of China
| | - Yunlong Lu
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi 712100, People's Republic of China
| | - Pengli Guo
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi 712100, People's Republic of China
| | - Ganwei Zhang
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi 712100, People's Republic of China
| | - Yanru Wang
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi 712100, People's Republic of China
| | - Yi Zhang
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi 712100, People's Republic of China
| | - Wenxin Zhu
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi 712100, People's Republic of China
| | - Jiachuan Pan
- Guangdong Provincial Key Laboratory of Emergency Test for Dangerous Chemicals, Guangdong Institute of Analysis, Guangzhou, Guangdong 510070, People's Republic of China
| | - Jianlong Wang
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi 712100, People's Republic of China
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27
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Li D, Morisseau C, McReynolds CB, Duflot T, Bellien J, Nagra RM, Taha AY, Hammock BD. Development of Improved Double-Nanobody Sandwich ELISAs for Human Soluble Epoxide Hydrolase Detection in Peripheral Blood Mononuclear Cells of Diabetic Patients and the Prefrontal Cortex of Multiple Sclerosis Patients. Anal Chem 2020; 92:7334-7342. [PMID: 32253910 PMCID: PMC7744119 DOI: 10.1021/acs.analchem.0c01115] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Nanobodies have been progressively replacing traditional antibodies in various immunological methods. However, the use of nanobodies as capture antibodies is greatly hampered by their poor performance after passive adsorption to polystyrene microplates, and this restricts the full use of double nanobodies in sandwich enzyme-linked immunosorbent assays (ELISAs). Herein, using the human soluble epoxide hydrolase (sEH) as a model analyte, we found that both the immobilization format and the blocking agent have a significant influence on the performance of capture nanobodies immobilized on polystyrene and the subsequent development of double-nanobody sandwich ELISAs. We first conducted epitope mapping for pairing nanobodies and then prepared a horseradish-peroxidase-labeled nanobody using a mild conjugation procedure as a detection antibody throughout the work. The resulting sandwich ELISA using a capture nanobody (A9, 1.25 μg/mL) after passive adsorption and bovine serum albumin (BSA) as a blocking agent generated a moderate sensitivity of 0.0164 OD·mL/ng and a limit of detection (LOD) of 0.74 ng/mL. However, the introduction of streptavidin as a linker to the capture nanobody at the same working concentration demonstrated a dramatic 16-fold increase in sensitivity (0.262 OD·mL/ng) and a 25-fold decrease in the LOD for sEH (0.03 ng/mL). The streptavidin-bridged double-nanobody ELISA was then successfully applied to tests for recovery, cross-reactivity, and real samples. Meanwhile, we accidentally found that blocking with skim milk could severely damage the performance of the capture nanobody by an order of magnitude compared with BSA. This work provides guidelines to retain the high effectiveness of the capture nanobody and thus to further develop the double-nanobody ELISA for various analytes.
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Affiliation(s)
- Dongyang Li
- Department of Entomology and Nematology and UCD Comprehensive Cancer Center, University of California, Davis, California 95616, United States
| | - Christophe Morisseau
- Department of Entomology and Nematology and UCD Comprehensive Cancer Center, University of California, Davis, California 95616, United States
| | - Cindy B. McReynolds
- Department of Entomology and Nematology and UCD Comprehensive Cancer Center, University of California, Davis, California 95616, United States
| | - Thomas Duflot
- Department of Clinical Pharmacology, Rouen University Hospital & Institut National de la Santé et de la Recherche Médicale (INSERM) U1096, Normandie University, UNIROUEN, Rouen, France
| | - Jérémy Bellien
- Department of Clinical Pharmacology, Rouen University Hospital & Institut National de la Santé et de la Recherche Médicale (INSERM) U1096, Normandie University, UNIROUEN, Rouen, France
| | - Rashed M. Nagra
- Neurology Research, West Los Angeles VA Medical Center, Los Angeles, California 90073, United States
| | - Ameer Y. Taha
- Department of Food Science and Technology, University of California, Davis, California 95616, United States
| | - Bruce D. Hammock
- Department of Entomology and Nematology and UCD Comprehensive Cancer Center, University of California, Davis, California 95616, United States
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28
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A compact nanobody-DNAzyme conjugate enables antigen detection and signal amplification. N Biotechnol 2020; 56:1-8. [DOI: 10.1016/j.nbt.2019.10.009] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2019] [Revised: 10/16/2019] [Accepted: 10/22/2019] [Indexed: 12/15/2022]
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29
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He Y, Ren Y, Guo B, Yang Y, Ji Y, Zhang D, Wang J, Wang Y, Wang H. Development of a specific nanobody and its application in rapid and selective determination of Salmonella enteritidis in milk. Food Chem 2020; 310:125942. [DOI: 10.1016/j.foodchem.2019.125942] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2019] [Revised: 11/18/2019] [Accepted: 11/20/2019] [Indexed: 12/17/2022]
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30
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Affiliation(s)
- Lei Li
- The Key Laboratory of Functionalized Molecular Solids, Ministry of Education, Anhui Key Laboratory of Chemo/Biosensing, Laboratory of Biosensing and Bioimaging, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, People’s Republic of China
| | - Mingcui Zhang
- The Key Laboratory of Functionalized Molecular Solids, Ministry of Education, Anhui Key Laboratory of Chemo/Biosensing, Laboratory of Biosensing and Bioimaging, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, People’s Republic of China
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31
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Lin J, Yu J, Wang H, Xu Y, Li F, Chen X, Liang Y, Tang J, Wu L, Zhou Z, Chen C, Liu M, Chun X, Nian R, Song H. Development of a highly thermostable immunoassay based on a nanobody-alkaline phosphatase fusion protein for carcinoembryonic antigen detection. Anal Bioanal Chem 2020; 412:1723-1728. [PMID: 32030492 DOI: 10.1007/s00216-020-02456-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2019] [Revised: 01/14/2020] [Accepted: 01/24/2020] [Indexed: 10/25/2022]
Abstract
Carcinoembryonic antigen-related cell adhesion molecule 5 (CEACAM-5) assays are employed in routine clinical settings to diagnose tumor. We selected two nanobodies with high-affinity to CEACAM-5, termed Nb11C12 and Nb2D5, using phage-display technology. The Nb2D5 fused with calf intestinal alkaline phosphatase (CAP), human placental alkaline phosphatase (HAP), or Pyrococcus abyssi alkaline phosphatase (PAP) were expressed in human embryonic kidney (HEK293) cells. The enzymatic activity of Nb2D5-HAP fusion protein was the best and remained stable at 60 °C for 7 days. The affinity of Nb2D5-HAP fusion protein to CEACAM-5 reached 42 pM. A chemiluminescent enzyme immunoassay (CLEIA) based on Nb2D5-HAP fusion protein was established for quantitative CEACAM-5 assay in clinical settings. The CLEIA exhibited a wide linear range of 0.31-640 ng/mL toward CEACAM-5, with a limit of detection (LOD) of 0.85 ng/mL. No cross-reactivity occurred with CEACAM-1, CEACAM-3, CEACAM-6, or CEACAM-8, and no interference was observed with rheumatoid factors. The CLEIA based on Nb2D5-HAP fusion protein was stable for 8 weeks at 37 °C and 50% relative humidity. The CLEIA developed from Nb2D5-HAP fusion protein had much better stability and linearity with similar reproducibility compared with the enzyme-linked immunosorbent assay developed from conventional monoclonal antibodies, which have been widely used in clinics over the past several decades. Graphical abstract.
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Affiliation(s)
- Jingtao Lin
- Dalang Hospital of Dongguan, No. 85 Jinlangzhong Road, Dalang, Dongguan, 523770, Guangdong, China
| | - Jianli Yu
- CAS Key Laboratory of Biobased Materials, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, No. 189 Songling Road, Qingdao, 266101, Shandong, China.,University of Chinese Academy of Sciences, No.19 (A) Yuquan Road, Beijing, 100049, China
| | - Huan Wang
- Shenzhen Innova Nanobodi Co., Ltd., No. 7018 Caitian Road, Shenzhen, 518000, Guangdong, China
| | - Yanru Xu
- Dalang Hospital of Dongguan, No. 85 Jinlangzhong Road, Dalang, Dongguan, 523770, Guangdong, China
| | - Fei Li
- Shenzhen Innova Nanobodi Co., Ltd., No. 7018 Caitian Road, Shenzhen, 518000, Guangdong, China
| | - Xiaoheng Chen
- Shenzhen Innova Nanobodi Co., Ltd., No. 7018 Caitian Road, Shenzhen, 518000, Guangdong, China
| | - Yunlong Liang
- CAS Key Laboratory of Biobased Materials, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, No. 189 Songling Road, Qingdao, 266101, Shandong, China
| | - Jinsong Tang
- Dalang Hospital of Dongguan, No. 85 Jinlangzhong Road, Dalang, Dongguan, 523770, Guangdong, China
| | - Lili Wu
- Dalang Hospital of Dongguan, No. 85 Jinlangzhong Road, Dalang, Dongguan, 523770, Guangdong, China
| | - Zhengwei Zhou
- Dalang Hospital of Dongguan, No. 85 Jinlangzhong Road, Dalang, Dongguan, 523770, Guangdong, China
| | - Cailing Chen
- Dalang Hospital of Dongguan, No. 85 Jinlangzhong Road, Dalang, Dongguan, 523770, Guangdong, China
| | - Minjuan Liu
- Dalang Hospital of Dongguan, No. 85 Jinlangzhong Road, Dalang, Dongguan, 523770, Guangdong, China
| | - Xuan Chun
- Dalang Hospital of Dongguan, No. 85 Jinlangzhong Road, Dalang, Dongguan, 523770, Guangdong, China
| | - Rui Nian
- CAS Key Laboratory of Biobased Materials, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, No. 189 Songling Road, Qingdao, 266101, Shandong, China.
| | - Haipeng Song
- Shenzhen Innova Nanobodi Co., Ltd., No. 7018 Caitian Road, Shenzhen, 518000, Guangdong, China.
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32
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Pechelyulko AA, Tarakanova YN, Dmitriev DA, Massino YS, Kost VY, Rogozhin EA, Segal OL, Dmitriev AD. Comparative Analysis of the Efficiency of Chicken and Rabbit Antibodies in Competitive Enzyme Linked Immunoassay for the Detection of Bovine Beta-Casomorphin 7. APPL BIOCHEM MICRO+ 2019. [DOI: 10.1134/s0003683819060103] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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33
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Kurseev SA, Solovjev AM, Neumann MM, Medvedko AV, Sakharov IY. Chemiluminescent and Colorimetric Aptamer-Based Assays of Human α-Thrombin. ANAL LETT 2019. [DOI: 10.1080/00032719.2019.1640718] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Sergei A. Kurseev
- Faculty of Chemistry, Lomonosov Moscow State University, Moscow, Russia
| | - Anton M. Solovjev
- Faculty of Chemistry, Lomonosov Moscow State University, Moscow, Russia
| | - Marina M. Neumann
- Faculty of Chemistry, Lomonosov Moscow State University, Moscow, Russia
| | | | - Ivan Yu. Sakharov
- Faculty of Chemistry, Lomonosov Moscow State University, Moscow, Russia
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34
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McReynolds CB, Hwang SH, Yang J, Wan D, Wagner K, Morisseau C, Li D, Schmidt WK, Hammock BD. Pharmaceutical Effects of Inhibiting the Soluble Epoxide Hydrolase in Canine Osteoarthritis. Front Pharmacol 2019; 10:533. [PMID: 31214021 PMCID: PMC6554663 DOI: 10.3389/fphar.2019.00533] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2019] [Accepted: 04/29/2019] [Indexed: 11/30/2022] Open
Abstract
Osteoarthritis (OA) is a degenerative joint disease that causes pain and bone deterioration driven by an increase in prostaglandins (PGs) and inflammatory cytokines. Current treatments focus on inhibiting prostaglandin production, a pro-inflammatory lipid metabolite, with NSAID drugs; however, other lipid signaling targets could provide safer and more effective treatment strategies. Epoxides of polyunsaturated fatty acids (PUFAs) are anti-inflammatory lipid mediators that are rapidly metabolized by the soluble epoxide hydrolase (sEH) into corresponding vicinal diols. Interestingly, diol levels are increased in the synovial fluid of humans with OA, warranting further research on the biological role of this lipid pathway in the progression of OA. sEH inhibitors (sEHI) stabilize these biologically active, anti-inflammatory lipid epoxides, resulting in analgesia in both neuropathic, and inflammatory pain conditions. Most experimental studies testing the analgesic effects of sEH inhibitors have used experimental rodent models, which do not completely represent the complex etiology of painful diseases. Here, we tested the efficacy of sEHI in aged dogs with natural arthritis to provide a better representation of the clinical manifestations of pain. Two sEHI were administered orally, once daily for 5 days to dogs with naturally occurring arthritis to assess efficacy and pharmacokinetics. Blinded technicians recorded the behavior of the arthritic dogs based on pre-determined criteria to assess pain and function. After 5 days, EC1728 significantly reduced pain at a dose of 5 mg/kg compared to vehicle controls. Pharmacokinetic evaluation showed concentrations exceeding the enzyme potency in both plasma and synovial fluid. In vitro data showed that epoxyeicosatrienoic acid (EETs), epoxide metabolites of arachidonic acid, decreased inflammatory cytokines, IL-6 and TNF-α, and reduced cytotoxicity in canine chondrocytes challenged with IL1β to simulate an arthritic environment. These results provide the first example of altering lipid epoxides as a therapeutic target for OA potentially acting by protecting chondrocytes from inflammatory induced cytotoxicity. Considering the challenges and high variability of naturally occurring disease in aged dogs, these data provide initial proof of concept justification that inhibiting the sEH is a non-NSAID, non-opioid, disease altering strategy for treating OA, and warrants further investigation.
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Affiliation(s)
- Cindy B McReynolds
- Department of Entomology and Nematology, UC Davis Comprehensive Cancer Center, University of California, Davis, Davis, CA, United States.,EicOsis, Davis, CA, United States
| | - Sung Hee Hwang
- Department of Entomology and Nematology, UC Davis Comprehensive Cancer Center, University of California, Davis, Davis, CA, United States.,EicOsis, Davis, CA, United States
| | - Jun Yang
- Department of Entomology and Nematology, UC Davis Comprehensive Cancer Center, University of California, Davis, Davis, CA, United States.,EicOsis, Davis, CA, United States
| | - Debin Wan
- Department of Entomology and Nematology, UC Davis Comprehensive Cancer Center, University of California, Davis, Davis, CA, United States
| | - Karen Wagner
- Department of Entomology and Nematology, UC Davis Comprehensive Cancer Center, University of California, Davis, Davis, CA, United States.,EicOsis, Davis, CA, United States
| | - Christophe Morisseau
- Department of Entomology and Nematology, UC Davis Comprehensive Cancer Center, University of California, Davis, Davis, CA, United States
| | - Dongyang Li
- Department of Entomology and Nematology, UC Davis Comprehensive Cancer Center, University of California, Davis, Davis, CA, United States
| | | | - Bruce D Hammock
- Department of Entomology and Nematology, UC Davis Comprehensive Cancer Center, University of California, Davis, Davis, CA, United States.,EicOsis, Davis, CA, United States
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Mishra M, Tiwari S, Gunaseelan A, Li D, Hammock BD, Gomes AV. Improving the sensitivity of traditional Western blotting via Streptavidin containing Poly-horseradish peroxidase (PolyHRP). Electrophoresis 2019; 40:1731-1739. [PMID: 31021001 DOI: 10.1002/elps.201900059] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2019] [Revised: 04/15/2019] [Accepted: 04/22/2019] [Indexed: 11/10/2022]
Abstract
Immunoassays such as ELISAs and Western blotting have been the common choice for protein validation studies for the past several decades. Technical advancements and modifications are continuously being developed to enhance the detection sensitivity of these procedures. Among them, Streptavidin-containing poly-horseradish peroxidase (PolyHRP) based detection strategies have been shown to improve signals in ELISA. The use of commercially available Streptavidin and antibodies conjugated with many HRPs (PolyHRPs) to potentially enhance the detection sensitivity in Western blotting has not been previously investigated in a comprehensive manner. The use of PolyHRP-secondary antibody instead of HRP-secondary antibody increased the Western blotting sensitivity up to 85% depending on the primary antibody used. The use of a biotinylated secondary antibody and commercially available Streptavidin-conjugated with HRP or PolyHRP all resulted in increased sensitivity with respect to antigen detection. Utilizing a biotinylated secondary antibody and Streptavidin-conjugated PolyHRP resulted in as much as a 110-fold increase in Western blotting sensitivity over traditional Western blotting methods. Quantification of troponin I in rat heart lysates showed that the traditional Western blotting method only detected troponin I in ≥2 μg of lysate while Streptavidin-conjugated PolyHRP20 detected troponin I in ≥50 ng of lysate. A modified blocking procedure is also described that eliminated the interference caused by the endogenous biotinylated proteins. These results suggest that Streptavidin-conjugated PolyHRP and PolyHRP secondary antibodies are likely to be commonly utilized for Western blots in the future.
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Affiliation(s)
- Manish Mishra
- Department of Neurobiology, Physiology and Behavior University of California, Davis, CA, USA
| | - Shuchita Tiwari
- Department of Neurobiology, Physiology and Behavior University of California, Davis, CA, USA
| | - Anita Gunaseelan
- Department of Neurobiology, Physiology and Behavior University of California, Davis, CA, USA
| | - Dongyang Li
- Department of Entomology and Nematology, University of California, Davis, CA, USA
| | - Bruce D Hammock
- Department of Entomology and Nematology, University of California, Davis, CA, USA
| | - Aldrin V Gomes
- Department of Neurobiology, Physiology and Behavior University of California, Davis, CA, USA
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36
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Bioinspired synthesis of organic–inorganic hybrid nanoflowers for robust enzyme-free electrochemical immunoassay. Biosens Bioelectron 2019; 133:94-99. [DOI: 10.1016/j.bios.2019.03.032] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2018] [Revised: 03/10/2019] [Accepted: 03/17/2019] [Indexed: 01/13/2023]
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Kolosova AY, Sakharov IY. Triple Amplification Strategy for the Improved Efficiency of a Microplate-Based Assay for the Chemiluminescent Detection of DNA. ANAL LETT 2019. [DOI: 10.1080/00032719.2018.1539091] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Anna Y. Kolosova
- Faculty of Chemistry, Lomonosov Moscow State University, Moscow, Russia
| | - Ivan Y. Sakharov
- Faculty of Chemistry, Lomonosov Moscow State University, Moscow, Russia
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38
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Duflot T, Moreau-Grangé L, Roche C, Iacob M, Wils J, Rémy-Jouet I, Cailleux AF, Leuillier M, Renet S, Li D, Morisseau C, Lamoureux F, Richard V, Prévost G, Joannidès R, Bellien J. Altered bioavailability of epoxyeicosatrienoic acids is associated with conduit artery endothelial dysfunction in type 2 diabetic patients. Cardiovasc Diabetol 2019; 18:35. [PMID: 30885203 PMCID: PMC6423843 DOI: 10.1186/s12933-019-0843-z] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/09/2019] [Accepted: 03/08/2019] [Indexed: 01/04/2023] Open
Abstract
Background This pathophysiological study addressed the hypothesis that soluble epoxide hydrolase (sEH), which metabolizes the vasodilator and anti-inflammatory epoxyeicosatrienoic acids (EETs) to dihydroxyeicosatrienoic acids (DHETs), contributes to conduit artery endothelial dysfunction in type 2 diabetes. Methods and results Radial artery endothelium-dependent flow-mediated dilatation in response to hand skin heating was reduced in essential hypertensive patients (n = 9) and type 2 diabetic subjects with (n = 19) or without hypertension (n = 10) compared to healthy subjects (n = 36), taking into consideration cardiovascular risk factors, flow stimulus and endothelium-independent dilatation to glyceryl trinitrate. Diabetic patients but not non-diabetic hypertensive subjects displayed elevated whole blood reactive oxygen species levels and loss of NO release during heating, assessed by measuring local plasma nitrite variation. Moreover, plasma levels of EET regioisomers increased during heating in healthy subjects, did not change in hypertensive patients and decreased in diabetic patients. Correlation analysis showed in the overall population that the less NO and EETs bioavailability increases during heating, the more flow-mediated dilatation is reduced. The expression and activity of sEH, measured in isolated peripheral blood mononuclear cells, was elevated in diabetic but not hypertensive patients, leading to increased EETs conversion to DHETs. Finally, hyperglycemic and hyperinsulinemic euglycemic clamps induced a decrease in flow-mediated dilatation in healthy subjects and this was associated with an altered EETs release during heating. Conclusions These results demonstrate that an increased EETs degradation by sEH and altered NO bioavailability are associated with conduit artery endothelial dysfunction in type 2 diabetic patients independently from their hypertensive status. The hyperinsulinemic and hyperglycemic state in these patients may contribute to these alterations. Trial registration NCT02311075. Registered December 8, 2014. Electronic supplementary material The online version of this article (10.1186/s12933-019-0843-z) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Thomas Duflot
- Department of Pharmacology, Rouen University Hospital, 76000, Rouen Cedex, France.,Normandie Univ, UNIROUEN, INSERM U1096, FHU REMOD-VHF, 76000, Rouen, France.,Laboratory of Pharmacokinetics, Toxicology and Pharmacogenetics, Rouen University Hospital, 76000, Rouen, France
| | | | - Clothilde Roche
- Normandie Univ, UNIROUEN, INSERM U1096, FHU REMOD-VHF, 76000, Rouen, France
| | - Michèle Iacob
- Department of Pharmacology, Rouen University Hospital, 76000, Rouen Cedex, France
| | - Julien Wils
- Department of Pharmacology, Rouen University Hospital, 76000, Rouen Cedex, France.,Normandie Univ, UNIROUEN, INSERM U1096, FHU REMOD-VHF, 76000, Rouen, France
| | | | | | - Matthieu Leuillier
- Normandie Univ, UNIROUEN, INSERM U1096, FHU REMOD-VHF, 76000, Rouen, France
| | - Sylvanie Renet
- Normandie Univ, UNIROUEN, INSERM U1096, FHU REMOD-VHF, 76000, Rouen, France
| | - Dongyang Li
- Department of Entomology and Nematology, and Comprehensive Cancer Center, University of California, Davis, Davis, CA, 95616, USA
| | - Christophe Morisseau
- Department of Entomology and Nematology, and Comprehensive Cancer Center, University of California, Davis, Davis, CA, 95616, USA
| | - Fabien Lamoureux
- Department of Pharmacology, Rouen University Hospital, 76000, Rouen Cedex, France.,Normandie Univ, UNIROUEN, INSERM U1096, FHU REMOD-VHF, 76000, Rouen, France.,Laboratory of Pharmacokinetics, Toxicology and Pharmacogenetics, Rouen University Hospital, 76000, Rouen, France
| | - Vincent Richard
- Department of Pharmacology, Rouen University Hospital, 76000, Rouen Cedex, France.,Normandie Univ, UNIROUEN, INSERM U1096, FHU REMOD-VHF, 76000, Rouen, France
| | - Gaëtan Prévost
- Department of Endocrinology, Rouen University Hospital, 76000, Rouen, France.,Normandie Univ, UNIROUEN, INSERM U1239, 76000, Rouen, France
| | - Robinson Joannidès
- Department of Pharmacology, Rouen University Hospital, 76000, Rouen Cedex, France.,Normandie Univ, UNIROUEN, INSERM U1096, FHU REMOD-VHF, 76000, Rouen, France.,Centre d'Investigation Clinique (CIC)-INSERM 1404, Rouen University Hospital, 76000, Rouen, France
| | - Jérémy Bellien
- Department of Pharmacology, Rouen University Hospital, 76000, Rouen Cedex, France. .,Normandie Univ, UNIROUEN, INSERM U1096, FHU REMOD-VHF, 76000, Rouen, France. .,Centre d'Investigation Clinique (CIC)-INSERM 1404, Rouen University Hospital, 76000, Rouen, France.
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Mohamad A, Teo H, Keasberry NA, Ahmed MU. Recent developments in colorimetric immunoassays using nanozymes and plasmonic nanoparticles. Crit Rev Biotechnol 2018; 39:50-66. [DOI: 10.1080/07388551.2018.1496063] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Azureen Mohamad
- Biosensors and Biotechnology Laboratory, Integrated Science Building, Faculty of Science, Universiti Brunei Darussalam, Jalan Tungku Link, Gadong, Brunei
| | - Huisian Teo
- Biosensors and Biotechnology Laboratory, Integrated Science Building, Faculty of Science, Universiti Brunei Darussalam, Jalan Tungku Link, Gadong, Brunei
| | - Natasha Ann Keasberry
- Biosensors and Biotechnology Laboratory, Integrated Science Building, Faculty of Science, Universiti Brunei Darussalam, Jalan Tungku Link, Gadong, Brunei
| | - Minhaz Uddin Ahmed
- Biosensors and Biotechnology Laboratory, Integrated Science Building, Faculty of Science, Universiti Brunei Darussalam, Jalan Tungku Link, Gadong, Brunei
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Li T, Li SL, Fang C, Hou YN, Zhang Q, Du X, Lee HC, Zhao YJ. Nanobody-based dual epitopes protein identification (DepID) assay for measuring soluble CD38 in plasma of multiple myeloma patients. Anal Chim Acta 2018; 1029:65-71. [PMID: 29907292 DOI: 10.1016/j.aca.2018.04.061] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2018] [Revised: 04/09/2018] [Accepted: 04/24/2018] [Indexed: 12/30/2022]
Abstract
BACKGROUND CD38 is a surface membrane antigen highly expressed in malignant blood cells, such as multiple myeloma (MM). A soluble form of CD38 (sCD38) is also present in the plasma, deriving likely from the shedding from the cells. The plasma levels of sCD38 should thus correlate closely with the proliferation of the MM cells, allowing the development of a simple diagnostic blood test for monitoring the progress of the disease. However, the plasma sCD38 levels are extremely low, requiring the design of a highly sensitive and specific assay. RESULTS In this study, we developed an ultra-sensitive assay, based on two nanobodies (Nbs) targeting two distinct epitopes of sCD38. One Nb acts as a capturer, and the other is fused with the firefly luciferase serving as a reporter to ensure sensitivity. We showed that this Dual epitopes protein IDentification (DepID) assay has sensitivity reaching 10 pg/mL, which is 10 times higher than that of a commercial ELISA kit. By this method, we were able to precisely quantify the levels of sCD38 in the plasma of MM patients, which were significantly higher than those from healthy donors. We further showed that the increase plasma levels of sCD38 correlated with the progress of MM. CONCLUSION We have developed a Nb-based luminescence sandwich assay, named as DepID, for quantification of the soluble CD38 in MM patients' plasma and showed the potency of this method as a tool for general diagnosis of MM or companion diagnosis of the CD38-targeted therapies.
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Affiliation(s)
- Ting Li
- Laboratory of Cytophysiology, State Key Laboratory of Chemical Oncogenomics, Key Laboratory of Chemical Genomics, Peking University Shenzhen Graduate School, Shenzhen 518055, China
| | - Song Lu Li
- Laboratory of Cytophysiology, State Key Laboratory of Chemical Oncogenomics, Key Laboratory of Chemical Genomics, Peking University Shenzhen Graduate School, Shenzhen 518055, China
| | - Cheng Fang
- Laboratory of Cytophysiology, State Key Laboratory of Chemical Oncogenomics, Key Laboratory of Chemical Genomics, Peking University Shenzhen Graduate School, Shenzhen 518055, China
| | - Yun Nan Hou
- Laboratory of Cytophysiology, State Key Laboratory of Chemical Oncogenomics, Key Laboratory of Chemical Genomics, Peking University Shenzhen Graduate School, Shenzhen 518055, China
| | - Qiaoxia Zhang
- Shenzhen Bone Marrow Transplantation Public Service Platform, Department of Hematology, Shenzhen Second People's Hospital, The First Affiliated Hospital of Shenzhen University, Shenzhen 518000, China
| | - Xin Du
- Shenzhen Bone Marrow Transplantation Public Service Platform, Department of Hematology, Shenzhen Second People's Hospital, The First Affiliated Hospital of Shenzhen University, Shenzhen 518000, China
| | - Hon Cheung Lee
- Laboratory of Cytophysiology, State Key Laboratory of Chemical Oncogenomics, Key Laboratory of Chemical Genomics, Peking University Shenzhen Graduate School, Shenzhen 518055, China.
| | - Yong Juan Zhao
- Laboratory of Cytophysiology, State Key Laboratory of Chemical Oncogenomics, Key Laboratory of Chemical Genomics, Peking University Shenzhen Graduate School, Shenzhen 518055, China.
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42
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Microplate Chemiluminescent Assay for DNA Detection Using Apoperoxidase-Oligonucleotide as Capture Conjugate and HRP-Streptavidin Signaling System. SENSORS 2018; 18:s18041289. [PMID: 29690600 PMCID: PMC5948693 DOI: 10.3390/s18041289] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/15/2018] [Revised: 04/19/2018] [Accepted: 04/19/2018] [Indexed: 12/15/2022]
Abstract
A covalent conjugate of horseradish apoperoxidase and amino-containing oligonucleotide was synthesized for the first time. Using the obtained conjugate as a capture reagent chemiluminescent microtiter plate-based assay for detection of 35-mer fragment of hepatitis B virus (HBV) DNA (proof-of-concept analyte) was developed. To detect the target DNA, a signaling system consisted of biotinylated reporter oligonucleotide and HRP-streptavidin conjugate was used. The high sensitivity of the assay was due to the enhanced chemiluminescence reaction, where 3-(10′-phenothiazinyl)propane-1-sulfonate/N-morpholinopyridine pair was used as an enhancer. Under the optimized conditions the limit of detection and a working range of the assay were 3 pM and 6⁻100 pM, respectively. The assay sensitivity was 1.6 × 10⁵ RLU/pM of target. The coefficient of variation (CV) for determination of HBV DNA within the working range was lower than 6%.
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Wu J, Xianyu Y, Wang X, Hu D, Zhao Z, Lu N, Xie M, Lei H, Chen Y. Enzyme-Free Amplification Strategy for Biosensing Using Fe3+–Poly(glutamic acid) Coordination Chemistry. Anal Chem 2018; 90:4725-4732. [DOI: 10.1021/acs.analchem.7b05344] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Jing Wu
- Analytical and Testing Center of Beijing Normal University, Beijing 100875, China
| | - Yunlei Xianyu
- CAS Key Laboratory
for Biological Effects of Nanomaterials and Nanosafety, National Center for Nanoscience and Technology, Beijing 100190, China
| | - Xiangfeng Wang
- Analytical and Testing Center of Beijing Normal University, Beijing 100875, China
| | - Dehua Hu
- Analytical and Testing Center of Beijing Normal University, Beijing 100875, China
| | - Zhitao Zhao
- Analytical and Testing Center of Beijing Normal University, Beijing 100875, China
| | - Ning Lu
- Guangdong Provincial
Key Laboratory of Food Quality and Safety/College of Food Science, South China Agricultural University, Guangzhou 510642, China
| | - Mengxia Xie
- Analytical and Testing Center of Beijing Normal University, Beijing 100875, China
| | - Hongtao Lei
- Guangdong Provincial
Key Laboratory of Food Quality and Safety/College of Food Science, South China Agricultural University, Guangzhou 510642, China
| | - Yiping Chen
- CAS Key Laboratory
for Biological Effects of Nanomaterials and Nanosafety, National Center for Nanoscience and Technology, Beijing 100190, China
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An Enhanced Direct Competitive Immunoassay for the Detection of Kanamycin and Tobramycin in Milk Using Multienzyme-Particle Amplification. FOOD ANAL METHOD 2018. [DOI: 10.1007/s12161-018-1185-2] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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45
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Fang F, Liu J, Li Y, Yang J, Yang J. A New Colorimetric Platform for Protein Detection Based on Recognition-Induced Cascade of Polymeric Nanoparticles Disassembly. Macromol Biosci 2018; 18. [DOI: 10.1002/mabi.201700392] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2017] [Revised: 12/07/2017] [Indexed: 11/06/2022]
Affiliation(s)
- Fang Fang
- State Key Laboratory of Chemical Resource Engineering; Beijing Key Laboratory of Bioprocess; College of Life Science and Technology; Beijing University of Chemical Technology; Beijing 100029 China
| | - Jin Liu
- State Key Laboratory of Chemical Resource Engineering; Beijing Key Laboratory of Bioprocess; College of Life Science and Technology; Beijing University of Chemical Technology; Beijing 100029 China
| | - Yushu Li
- State Key Laboratory of Chemical Resource Engineering; Beijing Key Laboratory of Bioprocess; College of Life Science and Technology; Beijing University of Chemical Technology; Beijing 100029 China
| | - Junjiao Yang
- College of Science; Beijing University of Chemical Technology; Beijing 100029 China
| | - Jing Yang
- State Key Laboratory of Chemical Resource Engineering; Beijing Key Laboratory of Bioprocess; College of Life Science and Technology; Beijing University of Chemical Technology; Beijing 100029 China
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Bodulev OL, Gribas AV, Sakharov IY. Microplate chemiluminescent assay for HBV DNA detection using 3-(10'-phenothiazinyl)propionic acid/N-morpholinopyridine pair as enhancer of HRP-catalyzed chemiluminescence. Anal Biochem 2017; 543:33-36. [PMID: 29203136 DOI: 10.1016/j.ab.2017.11.026] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2017] [Revised: 11/29/2017] [Accepted: 11/30/2017] [Indexed: 01/15/2023]
Abstract
A sensitive sandwich assay for hepatitis B virus (HBV) DNA detection based on use of commercial CL-ELISA microplates was developed. To reveal the target the covalent conjugate of reporter oligonucleotide and horseradish peroxidase (HRP) was synthesized. An employment of enhanced chemiluminescence reaction, where 3-(10'-phenothiazinyl)propionic acid/N-morpholinopyridine pair was used as enhancer of HRP-catalyzed chemiluminescence, permitted to measure the enzyme activity of the conjugate with high sensitivity. Under the favorable conditions the limit of detection and a linear range of the assay were 3 pM and 0.07-2.0 nM, respectively. The coefficient of variation (CV) for determination of HBV DNA concentrations within the working range was lower than 4%. The obtained results demonstrated that the developed assay had high sensitivity and precision.
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Affiliation(s)
- Oleg L Bodulev
- Department of Chemistry, Lomonosov Moscow State University, Leninskie gory, Moscow 119991, Russia
| | - Anastasia V Gribas
- Department of Chemistry, Lomonosov Moscow State University, Leninskie gory, Moscow 119991, Russia
| | - Ivan Yu Sakharov
- Department of Chemistry, Lomonosov Moscow State University, Leninskie gory, Moscow 119991, Russia.
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