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Chen F, Zhang Y, Wang M, Liu J, Hai W, Liu Y. Chitosan modified graphene field-effect transistor biosensor for ultrasensitive procalcitonin detection. Talanta 2024; 268:125308. [PMID: 37862752 DOI: 10.1016/j.talanta.2023.125308] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2023] [Revised: 10/06/2023] [Accepted: 10/12/2023] [Indexed: 10/22/2023]
Abstract
Sepsis is a systemic inflammatory response caused by a bacterial infection that often leading to tissue damage, organ failure and death. Procalcitonin (PCT), as a peptide precursor to hormones, is the main biomarker to identification of the sepsis. In this study, a chitosan modified graphene field transistor (CTS-GFET) was established and first time used for PCT ultra-sensitive detection. CTS was functionalized on the GFET channel surface to immobilized anti-PCT by glutaraldehyde. This biosensor exhibited the detection limit as low as 0.82 ag/mL in PBS, which exhibited 3 times enhancement compared with GFET biosensors. The enhancement mechanisms of CTS-GFET were studied by electrical theoretical model. In addition, the CTS-GFET biosensor was successfully applied to quantify the concentration of the PCT in human serum samples, indicating the potential use in clinical application.
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Affiliation(s)
- Furong Chen
- Inner Mongolia Key Laboratory of Carbon Nanomaterials, Nano Innovation Institute (NII), College Chemistry and Materials Science, Inner Mongolia Minzu University, Tongliao, 028000, People's Republic of China
| | - Ying Zhang
- Inner Mongolia Key Laboratory of Carbon Nanomaterials, Nano Innovation Institute (NII), College Chemistry and Materials Science, Inner Mongolia Minzu University, Tongliao, 028000, People's Republic of China
| | - Mingxuan Wang
- Inner Mongolia Key Laboratory of Carbon Nanomaterials, Nano Innovation Institute (NII), College Chemistry and Materials Science, Inner Mongolia Minzu University, Tongliao, 028000, People's Republic of China
| | - Jinghai Liu
- Inner Mongolia Key Laboratory of Carbon Nanomaterials, Nano Innovation Institute (NII), College Chemistry and Materials Science, Inner Mongolia Minzu University, Tongliao, 028000, People's Republic of China
| | - Wenfeng Hai
- Inner Mongolia Key Laboratory of Carbon Nanomaterials, Nano Innovation Institute (NII), College Chemistry and Materials Science, Inner Mongolia Minzu University, Tongliao, 028000, People's Republic of China.
| | - Yushuang Liu
- Inner Mongolia Key Laboratory of Carbon Nanomaterials, Nano Innovation Institute (NII), College Chemistry and Materials Science, Inner Mongolia Minzu University, Tongliao, 028000, People's Republic of China; Key Laboratory of Mongolian Medicine Research and Development Engineering, Ministry of Education, Inner Mongolia Minzu University, Tongliao, 028000, People's Republic of China.
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2
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Fu Y, Sun D, Qin Y, Zheng T, Zhou Z, Zhou X, Zhao X, Xu Y, Huang B. Development and application of an amplified luminescent proximity homogeneous assay-linked immunosorbent assay for the accurate quantification of kidney injury molecule-1. Front Mol Biosci 2024; 10:1280681. [PMID: 38304229 PMCID: PMC10832993 DOI: 10.3389/fmolb.2023.1280681] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Accepted: 12/06/2023] [Indexed: 02/03/2024] Open
Abstract
Background: Kidney injury molecule-1 (Kim-1), a specific marker of kidney injury, is usually not expressed in normal kidneys or at very low levels but is highly expressed in injured renal tubular epithelial cells until the damaged cells recover completely. Therefore, we aimed to develop an efficient and highly sensitive assay to accurately quantify Kim-1 levels in human serum and urine. Methods: In this study, a novel immunoassay was developed and named amplified luminescent proximity homogeneous assay-linked immunosorbent assay (AlphaLISA). Anti-Kim-1 antibodies can be directly coupled to carboxyl-modified donor and acceptor beads for the rapid detection of Kim-1 by double-antibody sandwich method. Serum and urine samples for Kim-1 measurements were obtained from 129 patients with nephropathy and 17 healthy individuals. Results: The linear range of Kim-1 detected by AlphaLISA was 3.83-5000 pg/mL, the coefficients of variation of intra-assay and inter-assay batches were 3.36%-4.71% and 5.61%-11.84%, respectively, and the recovery rate was 92.31%-99.58%. No cross reactions with neutrophil gelatinase-associated lipocalin, liver-type fatty acid binding protein, and matrix metalloproteinase-3 were observed. A good correlation (R 2 = 0.9086) was found between the findings of Kim-1-TRFIA and Kim-AlphaLISA for the same set of samples. In clinical trials, both serum and urine Kim-1 levels were significantly higher in patients with nephropathy than in healthy individuals, especially in patients with acute kidney injury. Furthermore, serum Kim-1 was superior to urinary Kim-1 in distinguishing between patients with nephropathy and healthy individuals. Conclusion: The developed Kim-1-AlphaLISA is highly efficient, precise, and sensitive, and it is suitable for the rapid detection of patients with acute kidney injury.
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Affiliation(s)
- Yulin Fu
- College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou, China
| | - Danqin Sun
- Department of Nephrology, Jiangnan University Medicine Center, Wuxi, China
| | - Yuan Qin
- College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou, China
| | - Tianyu Zheng
- College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou, China
| | - Zixuan Zhou
- College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou, China
| | - Xiumei Zhou
- College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou, China
| | - Xueqin Zhao
- College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou, China
| | - Yan Xu
- Department of Nephrology, Suzhou Ninth People’s Hospital, Suzhou Ninth Hospital Affiliated to Soochow University, Suzhou, China
| | - Biao Huang
- College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou, China
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3
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Li Z, Zhai W, Wang L, Liu J, Li C, Xu L. Preparation and characterization of a homogeneous immunoassay for point-of-care testing (POCT) of procalcitonin (PCT). ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2023; 15:5002-5009. [PMID: 37728429 DOI: 10.1039/d3ay00890h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/21/2023]
Abstract
Procalcitonin (PCT) has been recognized as a specific and early marker for microbial infection and sepsis. Sensitive measuring interaction-triggered luminescence experiment (SMILE), a homogeneous immunoassay method, was established for point-of-care testing (POCT) of PCT. SMILE is achieved through the principle of double antibody sandwich, where two antibodies immobilized on the surface of polystyrene microspheres (donor and acceptor beads) bind to the PCT antigen. The donor bead contains phthalocyanine dye (luminol chemiluminescent substance) and the acceptor bead contains dimethylthiophene derivatives and Eu chelates. Therefore, singlet oxygen can be transferred when the distance between donor and acceptor beads is within 200 nm, generating detectable luminescent signals. Scanning electron microscopy (SEM) was used to detect the diameter and polymer dispersity index (PDI) of microspheres before and after binding with antibodies to characterize the immobilization of antibodies. The reaction conditions for antibody immobilization including pH, mass ratio and reaction time have also been optimized. The limit of quantitation (LOQ) of the SMILE method (0.01 ng mL-1) was lower than that of the LFI method (0.1 ng mL-1), the working range (0.01-500 ng mL-1) was wider than that of the LFI method (0.1-50 ng mL-1), and the assay time (10 min) was shorter than that of the LFI method (15 min). So, SMILE is more suitable for POCT of PCT compared with lateral flow immunochromatography (LFI), which is the most used measuring method, due to its advantages of simple operation, saving time, convenience, wide detection range, and high sensitivity and accuracy.
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Affiliation(s)
- Zhaoying Li
- Graduate School, Tianjin Medical University, Tianjin, 300070, China.
- Tianjin Chest Hospital, Tianjin, 300222, China
| | | | - Lu Wang
- Graduate School, Tianjin Medical University, Tianjin, 300070, China.
- School of Pharmacy, Tianjin Medical University, No. 22 Qixiangtai Road, Heping District, Tianjin, 300070, China
| | - Jiyang Liu
- Epsilon Biotechnology Corporation, Zhejiang, 311199, China
| | - Chunjie Li
- Tianjin Chest Hospital, Tianjin, 300222, China
| | - Liang Xu
- Graduate School, Tianjin Medical University, Tianjin, 300070, China.
- Tianjin Medical College, Tianjin, 300222, China
- School of Pharmacy, Tianjin Medical University, No. 22 Qixiangtai Road, Heping District, Tianjin, 300070, China
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4
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Chen J, Fu B, Xiang Z, Chen X, Wang L, Qin Y, Zhao X, Zhou X, Liu P, Huang B. Sensitive amplified luminescent proximity homogeneous assay for the quantitative detection of CA242. J Immunol Methods 2023; 517:113487. [PMID: 37156407 DOI: 10.1016/j.jim.2023.113487] [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: 02/20/2023] [Revised: 05/04/2023] [Accepted: 05/04/2023] [Indexed: 05/10/2023]
Abstract
We here developed a sensitive and stable amplified luminescent proximity homogeneous assay (AlphaLISA) method for fast quantification of CA242 in human serum. Donor and acceptor beads modified with carboxyl groups could be coupled with CA242 antibodies after activation in the AlphaLISA method. CA242 was rapidly detected by the double antibody sandwich immunoassay. The method yielded good linearity (>0.996) and detection range (0.16-400 U/mL). The intra-assay precisions of CA242-AlphaLISA were between 3.43% and 6.81% (< 10%), and the inter-assay precisions were between 4.06% and 9.56% (< 15%). The relative recoveries ranged from 89.61% to 107.29%. Detection time for the CA242-AlphaLISA method was only 20 min. Moreover, results of CA242-AlphaLISA and time-resolved fluorescence immunoassay had satisfactory correlation and consistency (ρ = 0.9852). The method was successfully applied to the analysis of human serum samples. Meanwhile, serum CA242 has a good detection value in the identification and diagnosis of pancreatic cancer and the monitoring of disease degree. Furthermore, the proposed AlphaLISA method is expected to be an alternative to traditional detection methods, laying a good foundation for the further development of kits to detect other biomarkers in future studies.
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Affiliation(s)
- Jianye Chen
- College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou, China
| | - Benqi Fu
- Sichuan Friendship Hospital, Chengdu, China
| | - Zhongyi Xiang
- College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou, China
| | - Xindong Chen
- College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou, China
| | - Lu Wang
- College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou, China
| | - Yuan Qin
- College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou, China
| | - Xueqin Zhao
- College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou, China
| | - Xiumei Zhou
- College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou, China
| | - Pengfei Liu
- Department of Gastroenterology, The Jiangyin Clinical College of Xuzhou Medical University, Wuxi, People's Republic of China
| | - Biao Huang
- College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou, China.
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5
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Development of amplified luminescent proximity homogeneous assay for quantitation of gastrin-17. Anal Biochem 2023; 662:115016. [PMID: 36502889 DOI: 10.1016/j.ab.2022.115016] [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: 11/08/2022] [Accepted: 12/07/2022] [Indexed: 12/14/2022]
Abstract
A highly sensitive and convenient amplified luminescent proximity homogeneous assay (AlphaLISA) method with high throughput and automation potential was developed for quantitation of serum Gastrin-17 (G-17) levels, which can facilitate the early diagnosis of atrophic gastritis in people at high risk of gastric cancer using a non-invasive approach. In this study, donor and acceptor beads with modified carboxyl groups on the surface were directly coupled to anti-G-17 antibodies through activation was proposed for application in the development of the new AlphaLISA, which can effectively simplify the steps and shorten the reaction time to achieve faster detection. Therefore, the G-17-AlphaLISA only needs to react for 15 min to obtain good analysis results. The proposed method has a wider detection range than commercial enzyme-linked immunosorbent assay (ELISA) kits (0.12-112.8 pmol/L > 0.5-40 pmol/L). In addition, results of G-17-AlphaLISA and ELISA had good correlation and agreement (ρ = 0.936). Importantly, the developed method may be more suitable for the large-scale screening of people at high risk for gastric cancer than traditional ELISA and provides a novel solution for other biomarkers that require accurate, highly sensitive, and high throughput detection.
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6
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Xiang Z, Chen X, Zhou X, Qin Y, Zhao X, Wang Y, Li Q, Huang B. Development and application of a novel aldehyde nanoparticle-based amplified luminescent proximity homogeneous assay for rapid quantitation of pancreatic stone protein. Clin Chim Acta 2022; 535:120-130. [PMID: 36030885 DOI: 10.1016/j.cca.2022.08.020] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2022] [Revised: 08/04/2022] [Accepted: 08/20/2022] [Indexed: 11/25/2022]
Abstract
BACKGROUND Timely diagnosis of bacterial infections is important to prevent sepsis. Classical infection biomarkers have some flaws, and common detection methods are time-consuming. Thus, we aimed to establish an efficient detection method that precisely detects pancreatic stone protein (PSP) in human plasma for the timely diagnosis of bacterial infections. METHODS Based on the novel amplified luminescent proximity homogeneous assay (AlphaLISA) method, donor and acceptor beads modified with aldehyde groups were directly coupled to the anti-PSP antibodies. PSP was quickly detected by a double-antibody sandwich method. Plasma samples from healthy individuals, bacterially infected patients, and acute-phase response patients were tested. RESULTS The detection time of the developed method is only 5 min. The results of PSP-AlphaLISA and time-resolved fluorescence were consistent (ρ = 0.9722). The plasma PSP levels of patients with bacterial infection were significantly higher than those of acute-phase response patients and healthy individuals (P < 0.05). PSP levels in patients with bacterial infection with sepsis were significantly higher than those in patients with bacterial infection without sepsis (P < 0.05). CONCLUSIONS The PSP-AlphaLISA exhibited excellent performance and may be applied to the differential diagnosis between bacterial infection and sepsis in patients without interference from patients with acute-phase response.
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Affiliation(s)
- Zhongyi Xiang
- College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou, China
| | - Xindong Chen
- College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou, China
| | - Xiumei Zhou
- College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou, China
| | - Yuan Qin
- College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou, China
| | - Xueqin Zhao
- College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou, China
| | - Yigang Wang
- College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou, China
| | - Qian Li
- Zhejiang Provincial People's Hospital (Affiliated People's Hospital, Hangzhou Medical College), Hangzhou, China.
| | - Biao Huang
- College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou, China.
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7
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Xiang Z, Zhang Z, Chen X, Zhang L, Zhou X, Qin Y, Zhao X, Wang Y, Huang B, Tang H. Development and application of amplified luminescent proximity homogeneous assay for quantitation of heparin-binding protein. Anal Biochem 2022; 657:114906. [PMID: 36152874 DOI: 10.1016/j.ab.2022.114906] [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: 06/13/2022] [Revised: 09/09/2022] [Accepted: 09/13/2022] [Indexed: 11/29/2022]
Abstract
A fast and highly sensitive amplified luminescent proximity homogeneous assay (AlphaLISA) method was developed for quantitation of plasma heparin-binding protein levels. In this study, a method directly coupling donor and acceptor beads modified with aldehyde groups to anti-HBP antibodies was proposed, which can effectively simplify the steps and shorten the reaction time to achieve faster detection. Therefore, the developed method required only 15 min of reaction time to generate results. Compared with the approved commercial kit, the developed method had a wider linear range (2.78-500 ng/mL). The excellent linear range means that the method can better exploit the value of HBP in clinical applications. Meanwhile, results of amplified luminescent proximity homogeneous assay and fluorescence dry quantitative immunoassay had good correlation and consistency (ρ = 0.9181). Moreover, the plasma HBP concentrations of patients with bacterial infection were significantly higher than those of healthy individuals (P < 0.0001), indicating the potential applicability of the proposed method for predicting the incidence of bacterial infections. Importantly, the newly developed method is expected to serve as an alternative to the traditional assay method and provides a completely new platform for other biomarkers that require rapid detection.
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Affiliation(s)
- Zhongyi Xiang
- College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou, China
| | - Zhibin Zhang
- Clinical Laboratory, Wuxi Hospital of Traditional Chinese Medicine, Wuxi, China
| | - Xindong Chen
- College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou, China
| | - Lele Zhang
- Clinical Laboratory Medicine, Second Affiliated Hospital of Zhejiang University School of Medicine, China
| | - Xiumei Zhou
- College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou, China
| | - Yuan Qin
- College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou, China
| | - Xueqin Zhao
- College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou, China
| | - Yigang Wang
- College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou, China
| | - Biao Huang
- College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou, China.
| | - Huqiang Tang
- Clinical Laboratory Medicine, Second Affiliated Hospital of Zhejiang University School of Medicine, China.
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8
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Wang Y, Zheng Y, Li Y, Zhang S, Wang X, Zong H, Huang W, Kong D, Jiang Y, Liu P, Lv Q, Jiang H. Development of a rapid homogeneous immunoassay for detection of rotavirus in stool samples. Front Public Health 2022; 10:975720. [PMID: 35991049 PMCID: PMC9386352 DOI: 10.3389/fpubh.2022.975720] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Accepted: 07/19/2022] [Indexed: 11/16/2022] Open
Abstract
Rotavirus is the main pathogen causing acute viral gastroenteritis. Accurate and rapid diagnosis of rotavirus infection is important to determine appropriate treatment, prevention of unnecessary antibiotics use and control of infection spread. In this study, we established a rapid, accurate, and sensitive amplified luminescent proximity homogeneous assay linked immunosorbent assay (AlphaLISA) for detecting rotavirus and evaluated its efficacy in human stool samples. Our results demonstrated that the sensitivity of AlphaLISA (5−8) significantly exceeded that of the immunochromatographic assay (ICA, 5−4) for rotavirus antigen detection. The intra-assay and inter-assay coefficients of variation were 2.99–3.85% and 5.27–6.51%, respectively. Furthermore, AlphaLISA was specific for rotavirus and did not cross-react with other common diarrhea viruses. AlphaLISA and real-time reverse transcription polymerase chain reaction (RT-qPCR, which is considered a gold standard for detecting diarrhea viruses) tests showed consistent results on 235 stool samples, with an overall consistency rate of 97.87% and a kappa value of 0.894 (P < 0.001). The overall consistency rate of ICA compared with RT-qPCR was 95.74%. AlphaLISA showed better consistency with RT-qPCR than the routinely used ICA for rotavirus detection in stool samples. The AlphaLISA method can be used in clinical practice for the rapid, accurate, and sensitive detection of rotavirus infection.
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Affiliation(s)
- Ye Wang
- College of Life Science and Technology, Beijing University of Chemical Technology, Beijing, China
- State Key Laboratory of Pathogen and Biosecurity, Institute of Microbiology and Epidemiology, Academy of Military Medical Sciences (AMMS), Beijing, China
| | - Yuling Zheng
- State Key Laboratory of Pathogen and Biosecurity, Institute of Microbiology and Epidemiology, Academy of Military Medical Sciences (AMMS), Beijing, China
| | - Yan Li
- The Fifth Medical Center of PLA General Hospital, Beijing, China
| | - Shengwei Zhang
- State Key Laboratory of Pathogen and Biosecurity, Institute of Microbiology and Epidemiology, Academy of Military Medical Sciences (AMMS), Beijing, China
- Department of Clinical Laboratory, Dongfang Hospital, Beijing University of Chinese Medicine, Beijing, China
| | - Xin Wang
- The Fifth Medical Center of PLA General Hospital, Beijing, China
| | - Huijun Zong
- State Key Laboratory of Pathogen and Biosecurity, Institute of Microbiology and Epidemiology, Academy of Military Medical Sciences (AMMS), Beijing, China
- The Fifth Medical Center of PLA General Hospital, Beijing, China
| | - Wenhua Huang
- State Key Laboratory of Pathogen and Biosecurity, Institute of Microbiology and Epidemiology, Academy of Military Medical Sciences (AMMS), Beijing, China
| | - Decong Kong
- State Key Laboratory of Pathogen and Biosecurity, Institute of Microbiology and Epidemiology, Academy of Military Medical Sciences (AMMS), Beijing, China
| | - Yongqiang Jiang
- State Key Laboratory of Pathogen and Biosecurity, Institute of Microbiology and Epidemiology, Academy of Military Medical Sciences (AMMS), Beijing, China
| | - Peng Liu
- State Key Laboratory of Pathogen and Biosecurity, Institute of Microbiology and Epidemiology, Academy of Military Medical Sciences (AMMS), Beijing, China
- *Correspondence: Peng Liu
| | - Qingyu Lv
- State Key Laboratory of Pathogen and Biosecurity, Institute of Microbiology and Epidemiology, Academy of Military Medical Sciences (AMMS), Beijing, China
- Qingyu Lv
| | - Hua Jiang
- State Key Laboratory of Pathogen and Biosecurity, Institute of Microbiology and Epidemiology, Academy of Military Medical Sciences (AMMS), Beijing, China
- Hua Jiang
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Zhu K, Chen J, Hu J, Xiong S, Zeng L, Huang X, Xiong Y. Low-sample-consumption and ultrasensitive detection of procalcitonin by boronate affinity recognition-enhanced dynamic light scattering biosensor. Biosens Bioelectron 2022; 200:113914. [PMID: 34973568 DOI: 10.1016/j.bios.2021.113914] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Revised: 12/20/2021] [Accepted: 12/21/2021] [Indexed: 11/16/2022]
Abstract
Accurate determination of procalcitonin (PCT) is highly crucial in bacterial infection diagnosis. Many biosensors previously developed suffer from large sample consumption or lengthy waiting time, which raise difficulties for more vulnerable patients, such as infants, old people, and other critically ill patients. To address this dilemma, we present an innovative boronate affinity recognition (BAR)-enhanced dynamic light scattering (DLS) biosensor to achieve ultrasensitive PCT detection. In this biosensing system, monoclonal antibody-modified magnetic nanoparticles (MNP@mAb) are designed as probes to capture PCT from serum samples and generate DLS signal transduction. Polyvalent phenylboronic acid-labeled bovine serum albumin (BSA@PBA) is used as scaffold to aggregate MNP@mAb and PCT (MNP@mAb-PCT) complex because of the specific interaction of cis-diol-containing PCT with boronic acid ligands on the surface of BSA@PBA. The BAR-enhanced DLS biosensor shows ultrahigh sensitivity to PCT determination due to high binding affinity, with the limit of detection of 0.03 pg/mL. The total detection time of PCT in whole blood or serum is less than 15 min with small sample consumption (about 1 μL) due to the rapid magnetic separation and aggregation of MNP@mAb-PCT triggered by BSA@PBA. In addition, the proposed DLS biosensor exhibits a high specificity for PCT quantitative detection. Therefore, this work provides a promising and versatile strategy for extending DLS biosensor to rapid and ultrasensitive detection of trace PCT for broader patients and more urgent cases.
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Affiliation(s)
- Kang Zhu
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, 330047, PR China; School of Food Science and Technology, Nanchang University, Nanchang, 330047, PR China
| | - Jing Chen
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, 330047, PR China; School of Food Science and Technology, Nanchang University, Nanchang, 330047, PR China
| | - Jiaqi Hu
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, 330047, PR China; School of Food Science and Technology, Nanchang University, Nanchang, 330047, PR China
| | - Sicheng Xiong
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, 330047, PR China; School of Food Science and Technology, Nanchang University, Nanchang, 330047, PR China; Stockbridge School of Agriculture, University of Massachusetts, Amherst, MA 01003, United States.
| | - Lifeng Zeng
- The People's Hospital in Jiangxi Province, Nanchang, Jiangxi, 330006, PR China
| | - Xiaolin Huang
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, 330047, PR China; School of Food Science and Technology, Nanchang University, Nanchang, 330047, PR China.
| | - Yonghua Xiong
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, 330047, PR China; School of Food Science and Technology, Nanchang University, Nanchang, 330047, PR China
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10
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Ding S, Hu H, Yue X, Feng K, Gao X, Dong Q, Yang M, Tamer U, Huang G, Zhang J. A fluorescent biosensor based on quantum dot-labeled streptavidin and poly-l-lysine for the rapid detection of Salmonella in milk. J Dairy Sci 2022; 105:2895-2907. [PMID: 35181133 DOI: 10.3168/jds.2021-21229] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Accepted: 12/20/2021] [Indexed: 02/06/2023]
Abstract
Salmonella, as a common foodborne pathogen in dairy products, poses a great threat to human health. We studied a new detection method based on quantum dots (QD). A fluorescent biosensor with multiple fluorescent signal amplification based on a streptavidin (SA) biotin system and the polyamino linear polymer poly-l-lysine (PLL) were established to detect Salmonella in milk. First, Salmonella was captured on a black 96-well plate with paired Salmonella mAb to form a double-antibody sandwich. Second, SA was immobilized on biotin-modified mAb by SA-biotin specific bond. Then, the biotin-modified polylysine (BT-PLL) was bound on SA and specifically bonded again through the SA-biotin system. Finally, water-soluble CdSe/ZnS QD-labeled SA was added to a black 96-well plate for covalent coupling with BT-PLL. The fluorescent signal was amplified in a dendritic manner by the layer-by-layer overlap of SA and biotin and the covalent coupling of biotinylated PLL. Under optimal conditions, the detection limit was 4.9 × 103 cfu/mL in PBS. The detection limit was 10 times better than that of the conventional sandwich ELISA. In addition, the proposed biosensor was well specific and could be used for detecting Salmonella in milk samples.
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Affiliation(s)
- Shuangyan Ding
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, P. R. China
| | - Hailiang Hu
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, P. R. China
| | - Xianglin Yue
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, P. R. China
| | - Kaiwen Feng
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, P. R. China
| | - Xiaoyu Gao
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, P. R. China
| | - Qiuling Dong
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, P. R. China
| | - Mingqi Yang
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, P. R. China
| | - Ugur Tamer
- Department of Analytical Chemistry, Faculty of Pharmacy, Gazi University, 06500, Ankara, Turkey
| | - Ganhui Huang
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, P. R. China
| | - Jinsheng Zhang
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, P. R. China.
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Jin Y, He Y, Zhao D, Chen Y, Xue Q, Zou M, Yin H, Xing S. Development of an amplified luminescent proximity homogeneous assay for the detection of sulfonamides in animal-derived products. Food Sci Nutr 2021; 9:4938-4945. [PMID: 34532005 PMCID: PMC8441374 DOI: 10.1002/fsn3.2443] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Revised: 06/09/2021] [Accepted: 06/11/2021] [Indexed: 12/02/2022] Open
Abstract
In this study, we carried out an amplified luminescent proximity homogeneous assay (AlphaLISA) to detect sulfonamides (SAs) antibiotic residues in plasma, milk, pork, chicken, and fish. The SAs AlphaLISA method can detect 13 SAs with half-inhibitory concentration (IC50) 2.11-29.77 ng/ml. The detection level of those SAs was 0.3-41.12 ng/ml in matrices, which satisfied the maximum residue limit (MRL) of the European Union, United States, and China. Our recoveries are in the range of 88% to 116.8% with a coefficient of variation less than 9.3% for different spiked food samples. We observed a good correlation between the AlphaLISA and liquid chromatography-tandem mass spectrometry (LC-MS/MS) with blood samples from injected rabbits. The established AlphaLISA method provided a no-washing, rapid, high-throughput screening tool for SAs in food quality control, which is suitable for small-volume samples.
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Affiliation(s)
- Yong Jin
- Chinese Academy of Inspection and QuarantineBeijingChina
| | - Yanping He
- Chinese Academy of Inspection and QuarantineBeijingChina
- Anhui Normal UniversityWuhuChina
| | - Dali Zhao
- Jilin International Travel Health Care Center (Changchun Customs Port Clinic)ChangchunChina
| | - Yan Chen
- Chinese Academy of Inspection and QuarantineBeijingChina
| | - Qiang Xue
- Chinese Academy of Inspection and QuarantineBeijingChina
| | - Mingqiang Zou
- Chinese Academy of Inspection and QuarantineBeijingChina
| | - Hong Yin
- Chinese Academy of Inspection and QuarantineBeijingChina
| | - Shige Xing
- Chinese Academy of Inspection and QuarantineBeijingChina
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12
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Lim J, Lee YY, Choy YB, Park W, Park CG. Sepsis diagnosis and treatment using nanomaterials. Biomed Eng Lett 2021; 11:197-210. [PMID: 34277115 PMCID: PMC8274966 DOI: 10.1007/s13534-021-00200-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Revised: 06/10/2021] [Accepted: 07/04/2021] [Indexed: 12/13/2022] Open
Abstract
Sepsis is a life-threatening reaction that occurs when the body's severe response to an infection damages the host's own tissues. Sepsis has been globally recognized as a fatal disease. Rapid treatment of sepsis requires prompt identification, administering antibiotics, careful hemodynamic support, and treating the cause of the infection. Clinical outcomes of sepsis depend on early diagnosis and appropriate treatment. Unfortunately, current sepsis diagnosis and treatment, such as polymerase chain reaction-based assay, blood culture assay, and antibiotic therapy, are ineffective; consequently, sepsis-related mortality remains high and increases antimicrobial resistance. To overcome this challenge, nanotechnology, which involves engineering at a nanoscale, is used for diagnosing and treating sepsis. Preclinical models have shown protective effects and potential utility in managing septic shock. Furthermore, nanotechnology treatments based on diverse materials result in the effective treatment of sepsis, improving the survival rate. In this review, we present an overview of the recent research advancements in nanotechnology to diagnose and treat sepsis with a brief introduction to sepsis.
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Affiliation(s)
- Jaesung Lim
- Department of Biomedical Engineering, SKKU Institute for Convergence, Sungkyunkwan University (SKKU), Suwon, Gyeonggi 16419 Republic of Korea
- Department of Intelligent Precision Healthcare Convergence, SKKU Institute for Convergence, Sungkyunkwan University (SKKU), Suwon, Gyeonggi 16419 Republic of Korea
| | - Yun Young Lee
- Department of Biomedical Engineering, Seoul National University College of Medicine, Seoul, 03080 Republic of Korea
| | - Young Bin Choy
- Department of Biomedical Engineering, Seoul National University College of Medicine, Seoul, 03080 Republic of Korea
| | - Wooram Park
- Department of Biomedical-Chemical Engineering, The Catholic University of Korea, Bucheon, Gyeonggi 14662 Republic of Korea
| | - Chun Gwon Park
- Department of Biomedical Engineering, SKKU Institute for Convergence, Sungkyunkwan University (SKKU), Suwon, Gyeonggi 16419 Republic of Korea
- Department of Intelligent Precision Healthcare Convergence, SKKU Institute for Convergence, Sungkyunkwan University (SKKU), Suwon, Gyeonggi 16419 Republic of Korea
- Biomedical Institute for Convergence at SKKU (BICS), Sungkyunkwan University, Suwon, Gyeonggi 16419 Republic of Korea
- Center for Neuroscience Imaging Research, Institute for Basic Science (IBS), Suwon, Gyeonggi 16419 Republic of Korea
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13
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Wang X, Ma L, Hu C, Liu T, Sun S, Liu X, Guan M. Simultaneous Quantitative Detection of IL-6 and PCT Using SERS magnetic immunoassay with sandwich structure. NANOTECHNOLOGY 2021; 32. [PMID: 33711835 DOI: 10.1088/1361-6528/abee48] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/26/2020] [Accepted: 03/12/2021] [Indexed: 05/17/2023]
Abstract
Sepsis is a systemic inflammatory response syndrome caused by infection. The mortality rate is as high as 30%-50%. Early diagnosis and treatment can significantly improve the mortality of patients with sepsis. Therefore, we have developed a SERS-based magnetic immunoassay method that uses the principle of sandwich method to quantitatively detect Interleukin 6 (IL-6) and Procalcitonin (PCT). In this article, two different Raman reporter molecules are embedded in the middle of the Au@Ag shell and coupled with the tracer antibody to form a SERS immunoprobe. Biotin was coupled with capture antibody to form a sandwich structure when participating in the immune response. Streptavidin and biotin systems have extremely high binding affinity. The sandwich structure is quickly captured by SA magnetic beads and then applied with a magnetic field to enrich the magnetic beads. Finally, simultaneous quantitative detection is achieved by the intensity of the two Raman reporter characteristic peaks on the solution magnetic beads. IL-6 and PCT showed a good relationship between 0-1000 pg ml-1and 0-20 ng ml-1, respectively, and the limits of detection were 0.54 pg ml-1and 0.042 ng ml-1, respectively. The recovery rate was between 89.8% and 104.2%, both intra-assay and inter-assay CV were ≤20%. No cross-reaction with C-reactive protein (100μg ml-1), showing good specificity. This method provides a new technical reference for the clinical detection of sepsis biomarkers.
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Affiliation(s)
- Xiaomei Wang
- College of Chemistry and Chemical Engineering, Xinjiang Normal University, Urumqi, Xinjiang 830054, People's Republic of China
| | - Li Ma
- College of Chemistry and Chemical Engineering, Xinjiang Normal University, Urumqi, Xinjiang 830054, People's Republic of China
| | - Cunming Hu
- College of Chemistry and Chemical Engineering, Xinjiang Normal University, Urumqi, Xinjiang 830054, People's Republic of China
| | - Tingwei Liu
- Shanghai Simp Bio-science Co., Ltd. 201318, People's Republic of China
| | - Shijiao Sun
- College of Chemistry and Chemical Engineering, Xinjiang Normal University, Urumqi, Xinjiang 830054, People's Republic of China
| | - Xinghui Liu
- Department of Clinical Laboratory, Shanghai Gongli Hospital, The Second Military Medical University, Pudong New Area, Shanghai200135, People's Republic of China
| | - Ming Guan
- College of Chemistry and Chemical Engineering, Xinjiang Normal University, Urumqi, Xinjiang 830054, People's Republic of China
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14
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Kokorina AA, Ponomaryova TS, Goryacheva IY. Photoluminescence-based immunochemical methods for determination of C-reactive protein and procalcitonin. Talanta 2021; 224:121837. [PMID: 33379055 DOI: 10.1016/j.talanta.2020.121837] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2020] [Revised: 10/26/2020] [Accepted: 10/28/2020] [Indexed: 12/16/2022]
Abstract
Modern, sensitive, rapid, and selective analytical methods for the detection of inflammatory markers are a crucial tool for the assessment of inflammation state, efficacy of medical intervention, and the prediction of future diseases. Their development requires understanding of current state for point-of-care testing of inflammatory markers and identification of their crucial drawbacks. This review summarizes the progress in the application of luminescent labels for immunoassays. The luminescent labels became more popular in the latest decade due to their high sensitivity, selectivity, and robustness. This review presents a constructive analysis of different luminescent labels such as fluorescent organic dyes, quantum dots, long-lived emissive nanoparticles, and up-converting nanocrystals, as well as a range of the strategies for inflammatory markers determination. The advantages and disadvantages of all classes of luminescent labels are demonstrated, and the strategies of labels modification for their improvement are discussed. The current approaches for the creation of luminescent probes and robust assays are also highlighted.
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Affiliation(s)
- Alina A Kokorina
- Saratov State University, Astrakhanskaya Street 83, 410012, Saratov, Russia.
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15
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Gao S, Li J. Development of a Novel Homogeneous Nanoparticle-Based Assay for Rapid and High-Throughput Quantitation of the sST2 Protein in Human Serum. Int J Nanomedicine 2021; 15:10539-10546. [PMID: 33408473 PMCID: PMC7779812 DOI: 10.2147/ijn.s285899] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2020] [Accepted: 12/11/2020] [Indexed: 11/23/2022] Open
Abstract
Purpose The suppression of tumorigenicity 2 (ST2) protein is a member of the interleukin-1 receptor family with the transmembrane (ST2L) and soluble (sST2) subtypes and plays an important role in several diseases. Therefore, the present study aimed to establish and validate a novel amplified luminescent proximity homogeneous immunoassay (AlphaLISA) for the detection of sST2 in human serum. Materials and Methods Based on a sandwich-type immunoassay format, sST2 was captured using two different anti-sST2 antibodies. One of the antibodies was biotinylated while the other one was coated with AlphaLISA chemibeads. Thereafter, multiple tests were conducted to optimize the working conditions and validate analytical performance. Results The optimum concentration of the biotinylated antibodies was 1 μg/mL while the optimal dilution ratio for the anti-sST2 antibodies and conjugated chemibeads was 1:500. In addition, the optimal antigen-antibody reaction time was 15 minutes (min). Notably, the developed method showed a short turnaround time of about 25 min. Moreover, the assay exhibited high sensitivity with a limit of detection (LOD) of 0.176 ng/mL and a limit of quantification (LOQ) of 0.8 ng/mL. Furthermore, the intra-assay precision and inter-assay precision values were 5.29–7.10% and 9.41%–13.66%, respectively. It is also noteworthy that the test results deviated by less than ±10% when samples had ≤10.0 ng/mL of triglycerides, ≤0.5 mmol/L of bilirubin, ≤5.0 g/L of triglyceride, and ≤250 μg/L of biotin. Additionally, the developed assay was almost consistent with the commercially available PresageTM ST2 assay kit, with a Spearman correlation coefficient of 0.916 and an R2 of 0.963 as well as a slope of 0.957 from linear regression analysis. Conclusion The present study showed that the sandwich AlphaLISA is a rapid, high-throughput, and reliable test for studying the levels of sST2 in a variety of diseases.
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Affiliation(s)
- Shenxia Gao
- The Clinical Laboratory, Tianjin Chest Hospital, Tianjin, People's Republic of China
| | - Junpu Li
- The Clinical Laboratory, Tianjin Chest Hospital, Tianjin, People's Republic of China
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16
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MicroRNA-155: Regulation of Immune Cells in Sepsis. Mediators Inflamm 2021; 2021:8874854. [PMID: 33505221 PMCID: PMC7810547 DOI: 10.1155/2021/8874854] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2020] [Revised: 12/15/2020] [Accepted: 12/26/2020] [Indexed: 02/06/2023] Open
Abstract
MicroRNAs are small noncoding RNAs which regulate gene expression at the posttranscriptional level. miR-155 is encoded by the miR-155 host gene (miR155HG), also known as the noncoding B cell integration cluster (BIC). MicroRNAs are widely expressed in various hematopoietic cells and are involved in regulating the immune system. In this review, we summarized how miR-155 modulates specific immune cells and the regulatory role of miR-155 in sepsis. miR-155 is expressed by different populations of innate and adaptive immune cells and is involved in the regulation of development, proliferation, and function in these cells. Sepsis is associated with uncontrollable inflammatory responses, accompanied by unacceptably high mortality. Due to the inadequacy of diagnostic markers as well as treatment strategies, treating sepsis can be a huge challenge. So far, a large number of experiments have shown that the expression of miR-155 is increased at an early stage of sepsis and that this increase is positively correlated with disease progression and severity. In addition, by blocking the proinflammatory effects of miR-155, it can effectively improve sepsis-related organ injury, providing novel insights to identify potential biomarkers and therapeutic targets for sepsis. However, since most of the current research is limited to animal experiments, further clinical research is required to determine the function of miR-155 and its mechanism related to sepsis.
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Awaludin N, Abdullah J, Salam F, Ramachandran K, Yusof NA, Wasoh H. Fluorescence-based immunoassay for the detection of Xanthomonas oryzae pv. oryzae in rice leaf. Anal Biochem 2020; 610:113876. [PMID: 32750357 DOI: 10.1016/j.ab.2020.113876] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Revised: 07/07/2020] [Accepted: 07/14/2020] [Indexed: 12/13/2022]
Abstract
The identification of rice bacterial leaf blight disease requires a simple, rapid, highly sensitive, and quantitative approach that can be applied as an early detection monitoring tool in rice health. This paper highlights the development of a turn-off fluorescence-based immunoassay for the early detection of Xanthomonas oryzae pv. oryzae (Xoo), a gram-negative bacterium that causes rice bacterial leaf blight disease. Antibodies against Xoo bacterial cells were produced as specific bio-recognition molecules and the conjugation of these antibodies with graphene quantum dots and gold nanoparticles was performed and characterized, respectively. The combination of both these bio-probes as a fluorescent donor and metal quencher led to changes in the fluorescence signal. The immunoreaction between AntiXoo-GQDs, Xoo cells, and AntiXoo-AuNPs in the immuno-aggregation complex led to the energy transfer in the turn-off fluorescence-based quenching system. The change in fluorescence intensity was proportional to the logarithm of Xoo cells in the range of 100-105 CFU mL-1. The limit of detection was achieved at 22 CFU mL-1 and the specificity test against other plant disease pathogens showed high specificity towards Xoo. The detection of Xoo in real plant samples was also performed in this study and demonstrated satisfactory results.
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Affiliation(s)
- Norhafniza Awaludin
- Institute of Advanced Technology, University of Putra Malaysia, 43400, Serdang, Selangor, Malaysia; Biotechnology & Nanotechnology Research Centre, Malaysian Agricultural Research and Development Institute, Persiaran MARDI-UPM, 43400, Serdang, Selangor, Malaysia
| | - Jaafar Abdullah
- Institute of Advanced Technology, University of Putra Malaysia, 43400, Serdang, Selangor, Malaysia; Department of Chemistry, Faculty of Science, University of Putra Malaysia, 43400, Serdang, Selangor, Malaysia.
| | - Faridah Salam
- Biotechnology & Nanotechnology Research Centre, Malaysian Agricultural Research and Development Institute, Persiaran MARDI-UPM, 43400, Serdang, Selangor, Malaysia
| | - Kogeethavani Ramachandran
- Paddy & Rice Research Centre, Malaysian Agricultural Research and Development Institute, MARDI Seberang Perai, Beg Berkunci No.203, Pejabat Pos Kepala Batas, 13200, Seberang Perai, Pulau Pinang, Malaysia
| | - Nor Azah Yusof
- Institute of Advanced Technology, University of Putra Malaysia, 43400, Serdang, Selangor, Malaysia; Department of Chemistry, Faculty of Science, University of Putra Malaysia, 43400, Serdang, Selangor, Malaysia
| | - Helmi Wasoh
- Department of Bioprocess Technology, Faculty of Biotechnology and Biomolecule Science, University of Putra Malaysia, 43400, Serdang, Selangor, Malaysia
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18
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Günther A, Becker M, Göpfert J, Joos T, Schneiderhan-Marra N. Comparison of Bead-Based Fluorescence Versus Planar Electrochemiluminescence Multiplex Immunoassays for Measuring Cytokines in Human Plasma. Front Immunol 2020; 11:572634. [PMID: 33101295 PMCID: PMC7546899 DOI: 10.3389/fimmu.2020.572634] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Accepted: 09/07/2020] [Indexed: 12/31/2022] Open
Abstract
This study compared two 96-well multiplex immunoassay platforms for analytical performance in assessing cytokine concentrations in standards, quality controls and human plasma samples (n = 62), and evaluated assay time requirements. Assays included a bead-based fluorescence MILLIPLEX® assay/Luminex fluorescence platform (LMX) and three kits from Meso Scale Discovery (MSD) in planar electrochemiluminescence format. The LMX kit evaluated 21 cytokines and the MSD kits evaluated 10 cytokines each, with 16 overlapping cytokines between platforms. Both assays provided good reproducibility in standard curves for all analytes. Interassay CVs of shared analytes showed average kit quality control CVs ranging 1.9–18.2% for LMX and 2.4–13.9% for MSD. The MSD platform had lower LLoQs than LMX for 14/16 shared cytokines. For IL-17, the LLoQ was lower with LMX than MSD, and the LLoQs for IL-6 were similar. Although MSD calibration curves indicated lower LLoQs for most of those analytes, many more cytokines in human plasma samples were not detected by MSD than by LMX. The ULoQs were higher in LMX versus MSD assays for 13/16 shared analytes, lower than MSD for IL-17, and equivalent between assays for IL-6 and MIP-1α. Bland-Altman plots indicated that MSD classified 13/16 shared analytes as concentrations lower than by LMX. Time and motion analysis indicated that total mean assay times were 20 h 28 m and 21 h 33 m for LMX and MSD, respectively, including an overnight (17 h) incubation. The MSD assays employed a manufacturer-approved overnight incubation instead of the standard 2-h incubation, which kit instructions suggest might increase detection sensitivity. Hands-on labor time averaged 1 h 37 m for LMX and 2 h 33 m for MSD. In summary, assay selection factors should include selection of specific markers of interest, time and cost considerations, and anticipated cytokine concentrations in prospective samples.
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Affiliation(s)
- Anna Günther
- NMI Natural and Medical Sciences Institute at the University of Tübingen, Tübingen, Germany
| | - Matthias Becker
- NMI Natural and Medical Sciences Institute at the University of Tübingen, Tübingen, Germany
| | - Jens Göpfert
- NMI Natural and Medical Sciences Institute at the University of Tübingen, Tübingen, Germany
| | - Thomas Joos
- NMI Natural and Medical Sciences Institute at the University of Tübingen, Tübingen, Germany
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19
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Kuang Z, Deng H, Xu L, Hu Q, Cai Y, Wang R, Luo S, Liu T, Hao W. A homogeneous immunoassay for detection of the interaction between two tumor biomarkers of IGF1R-β and SOCS1. Biotechnol Appl Biochem 2020; 68:769-775. [PMID: 32700452 DOI: 10.1002/bab.1989] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Accepted: 07/14/2020] [Indexed: 12/24/2022]
Abstract
The current protein interaction method is time consuming and cumbersome or the instrument is expensive. A new method that is convenient, fast, and high throughput needs to be studied urgently. The purpose of this study was to establish a homogeneous immunoassay to detect the interaction between insulin-like growth factor-1 receptor-β (IGF1R-β) and suppressor of cytokine signaling 1 (SOCS1). The recombinant vectors IGF1R-β/pENTER and SOCS1/pENTER were constructed and transfected into 293T cells. Based on homogeneous immunoassay technology, we established a suitable method. The signal intensity in the 293T lysate that overexpressed IGF1R-β and SOCS1, respectively, was compared with the signal intensity in the simultaneous expression of IGF1R-β and SOCS1. The interaction between IGF1R-β and SOCS1 was verified in vitro. The detection system for the interaction between IGF1R-β and SOCS1 was established. Compared with other methods, homogeneous immunoassay has the advantages of being rapid and sensitive, having higher sensitivity, and easy to operate. The interaction between IGF1R-β and SOCS1 was tested to verify the feasibility of this method and prove its practicability and sensitivity. This new method can be used as a high-throughput platform for protein-protein interaction, with the advantages of trace detection, short detective time, and high detective sensitivity.
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Affiliation(s)
- Zhenzhan Kuang
- Institute of Antibody Engineering, School of Laboratory Medicine and Biotechnology, Southern Medical University, Guangzhou, Guangdong, People's Republic of China
| | - Hao Deng
- Institute of Antibody Engineering, School of Laboratory Medicine and Biotechnology, Southern Medical University, Guangzhou, Guangdong, People's Republic of China
| | - Lan Xu
- Institute of Antibody Engineering, School of Laboratory Medicine and Biotechnology, Southern Medical University, Guangzhou, Guangdong, People's Republic of China
| | - Qianying Hu
- Institute of Antibody Engineering, School of Laboratory Medicine and Biotechnology, Southern Medical University, Guangzhou, Guangdong, People's Republic of China
| | - Yan Cai
- Institute of Antibody Engineering, School of Laboratory Medicine and Biotechnology, Southern Medical University, Guangzhou, Guangdong, People's Republic of China
| | - Ruixue Wang
- Department of Laboratory Medicine, School of Stomatology and Medicine, Foshan University, Foshan, People's Republic of China
| | - Shuhong Luo
- Department of Laboratory Medicine, School of Stomatology and Medicine, Foshan University, Foshan, People's Republic of China
| | - Tiancai Liu
- Institute of Antibody Engineering, School of Laboratory Medicine and Biotechnology, Southern Medical University, Guangzhou, Guangdong, People's Republic of China.,Guangdong Provincial Key Laboratory of Construction and Detection in Tissue Engineering, Southern Medical University, Guangzhou, Guangdong, People's Republic of China
| | - Wenbo Hao
- Institute of Antibody Engineering, School of Laboratory Medicine and Biotechnology, Southern Medical University, Guangzhou, Guangdong, People's Republic of China.,Guangdong Provincial Key Laboratory of Construction and Detection in Tissue Engineering, Southern Medical University, Guangzhou, Guangdong, People's Republic of China
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20
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Spiegelmer-Based Sandwich Assay for Cardiac Troponin I Detection. Int J Mol Sci 2020; 21:ijms21144963. [PMID: 32674303 PMCID: PMC7404307 DOI: 10.3390/ijms21144963] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Revised: 07/10/2020] [Accepted: 07/12/2020] [Indexed: 01/12/2023] Open
Abstract
Two subunits of the ternary troponin complex, I and C, have cardiac muscle specific isoforms, and hence could be applied as highly-selective markers of acute coronary syndrome. We aimed at paving the way for the development of a robust cardiac troponin I-detecting sandwich assay by replacing antibodies with nuclease resistant aptamer analogues, so-called spiegelmers. To complement the previously generated spiegelmers that were specific for the N-terminus of cTnI, spiegelmers were selected for an amino acid stretch in the proximity of the C-terminal part of the protein by using a D-amino acid composed peptide. Following the selection, the oligonucleotides were screened by filter binding assay, and surface plasmon resonance analysis of the most auspicious candidates demonstrated that this approach could provide spiegelmers with subnanomolar dissociation constant. To demonstrate if the selected spiegelmers are functional and suitable for cTnI detection in a sandwich type arrangement, AlphaLisa technology was leveraged and the obtained results demonstrated that spiegelmers with different epitope selectivity are suitable for specific detection of cTnI protein even in human plasma containing samples. These results suggest that spiegelmers could be considered in the development of the next generation cTnI monitoring assays.
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21
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Liu X, Bao C, Shao X, Zhang Y, Zhang N, Sun X, Fan D, Wei Q, Ju H. A procalcitonin photoelectrochemical immunosensor: NCQDs and Sb 2S 3 co-sensitized hydrangea-shaped WO 3 as a matrix through a layer-by-layer assembly. NEW J CHEM 2020. [DOI: 10.1039/c9nj06118e] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Electron-transfer mechanism of a PEC immunosensor based on WO3/NCQDs/Sb2S3 composites in PBS electrolytes containing AA.
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Affiliation(s)
- Xin Liu
- Collaborative Innovation Center for Green Chemical Manufacturing and Accurate Detection
- School of Chemistry and Chemical Engineering
- University of Jinan
- Jinan 250022
- P. R. China
| | - Chunzhu Bao
- Collaborative Innovation Center for Green Chemical Manufacturing and Accurate Detection
- School of Chemistry and Chemical Engineering
- University of Jinan
- Jinan 250022
- P. R. China
| | - Xinrong Shao
- Collaborative Innovation Center for Green Chemical Manufacturing and Accurate Detection
- School of Chemistry and Chemical Engineering
- University of Jinan
- Jinan 250022
- P. R. China
| | - Yong Zhang
- Collaborative Innovation Center for Green Chemical Manufacturing and Accurate Detection
- School of Chemistry and Chemical Engineering
- University of Jinan
- Jinan 250022
- P. R. China
| | - Nuo Zhang
- Collaborative Innovation Center for Green Chemical Manufacturing and Accurate Detection
- School of Chemistry and Chemical Engineering
- University of Jinan
- Jinan 250022
- P. R. China
| | - Xu Sun
- Collaborative Innovation Center for Green Chemical Manufacturing and Accurate Detection
- School of Chemistry and Chemical Engineering
- University of Jinan
- Jinan 250022
- P. R. China
| | - Dawei Fan
- Collaborative Innovation Center for Green Chemical Manufacturing and Accurate Detection
- School of Chemistry and Chemical Engineering
- University of Jinan
- Jinan 250022
- P. R. China
| | - Qin Wei
- Collaborative Innovation Center for Green Chemical Manufacturing and Accurate Detection
- School of Chemistry and Chemical Engineering
- University of Jinan
- Jinan 250022
- P. R. China
| | - Huangxian Ju
- Collaborative Innovation Center for Green Chemical Manufacturing and Accurate Detection
- School of Chemistry and Chemical Engineering
- University of Jinan
- Jinan 250022
- P. R. China
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