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He Q, Chen F, Zhao Z, Pei P, Gan Y, Zhou A, Zhou J, Qu JH, Crommen J, Fillet M, Li Y, Wang Q, Jiang Z. Supramolecular Mimotope Peptide Nanofibers Promote Antibody-Ligand Polyvalent and Instantaneous Recognition for Biopharmaceutical Analysis. Anal Chem 2024; 96:5940-5950. [PMID: 38562013 DOI: 10.1021/acs.analchem.4c00051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/04/2024]
Abstract
Peptide-based supramolecules exhibit great potential in various fields due to their improved target recognition ability and versatile functions. However, they still suffer from numerous challenges for the biopharmaceutical analysis, including poor self-assembly ability, undesirable ligand-antibody binding rates, and formidable target binding barriers caused by ligand crowding. To tackle these issues, a "polyvalent recognition" strategy employing the CD20 mimotope peptide derivative NBD-FFVLR-GS-WPRWLEN (acting on the CDR domains of rituximab) was proposed to develop supramolecular nanofibers for target antibody recognition. These nanofibers exhibited rapid self-assembly within only 1 min and robust stability. Their binding affinity (179 nM) for rituximab surpassed that of the monomeric peptide (7 μM) by over 38-fold, highlighting that high ligand density and potential polyvalent recognition can efficiently overcome the target binding barriers of traditional supramolecules. Moreover, these nanofibers exhibited an amazing "instantaneous capture" rate (within 15 s), a high recovery (93 ± 3%), and good specificity for the target antibody. High-efficiency enrichment of rituximab was achieved from cell culture medium with good recovery and reproducibility. Intriguingly, these peptide nanofibers combined with bottom-up proteomics were successful in tracking the deamidation of asparagine 55 (from 10 to 16%) on the rituximab heavy chain after 21 day incubation in human serum. In summary, this study may open up an avenue for the development of versatile mimotope peptide supramolecules for biorecognition and bioanalysis of biopharmaceuticals.
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Affiliation(s)
- Qiaoxian He
- Institute of Pharmaceutical Analysis, College of Pharmacy/State Key Laboratory of Bioactive Molecules and Druggability Assessment/International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Ministry of Education (MOE) of China, Jinan University, Guangzhou 510632, China
| | - Feng Chen
- Institute of Pharmaceutical Analysis, College of Pharmacy/State Key Laboratory of Bioactive Molecules and Druggability Assessment/International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Ministry of Education (MOE) of China, Jinan University, Guangzhou 510632, China
| | - Zheng Zhao
- Institute of Pharmaceutical Analysis, College of Pharmacy/State Key Laboratory of Bioactive Molecules and Druggability Assessment/International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Ministry of Education (MOE) of China, Jinan University, Guangzhou 510632, China
| | - Pengfei Pei
- Beijing Key Laboratory of Bioprocess, College of Life Science and Technology, Beijing University of Chemical Technology, Beijing 100029, P. R. China
| | - Yongqing Gan
- School of Basic Medicine and Clinical Pharmacy, China Pharmaceutical University, Nanjing 210009, China
| | - Aixuan Zhou
- Institute of Pharmaceutical Analysis, College of Pharmacy/State Key Laboratory of Bioactive Molecules and Druggability Assessment/International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Ministry of Education (MOE) of China, Jinan University, Guangzhou 510632, China
| | - Jingwei Zhou
- Institute of Pharmaceutical Analysis, College of Pharmacy/State Key Laboratory of Bioactive Molecules and Druggability Assessment/International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Ministry of Education (MOE) of China, Jinan University, Guangzhou 510632, China
| | - Jia-Huan Qu
- Institute of Pharmaceutical Analysis, College of Pharmacy/State Key Laboratory of Bioactive Molecules and Druggability Assessment/International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Ministry of Education (MOE) of China, Jinan University, Guangzhou 510632, China
| | - Jacques Crommen
- Institute of Pharmaceutical Analysis, College of Pharmacy/State Key Laboratory of Bioactive Molecules and Druggability Assessment/International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Ministry of Education (MOE) of China, Jinan University, Guangzhou 510632, China
- Laboratory for the Analysis of Medicines, Department of Pharmaceutical Sciences, CIRM, University of Liege, CHU B36, B-4000 Liege, Belgium
| | - Marianne Fillet
- Institute of Pharmaceutical Analysis, College of Pharmacy/State Key Laboratory of Bioactive Molecules and Druggability Assessment/International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Ministry of Education (MOE) of China, Jinan University, Guangzhou 510632, China
- Laboratory for the Analysis of Medicines, Department of Pharmaceutical Sciences, CIRM, University of Liege, CHU B36, B-4000 Liege, Belgium
| | - Yingchun Li
- School of Science, Harbin Institute of Technology, Shenzhen, Guangdong 518055, China
| | - Qiqin Wang
- Institute of Pharmaceutical Analysis, College of Pharmacy/State Key Laboratory of Bioactive Molecules and Druggability Assessment/International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Ministry of Education (MOE) of China, Jinan University, Guangzhou 510632, China
| | - Zhengjin Jiang
- Institute of Pharmaceutical Analysis, College of Pharmacy/State Key Laboratory of Bioactive Molecules and Druggability Assessment/International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Ministry of Education (MOE) of China, Jinan University, Guangzhou 510632, China
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2
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Zhou J, Wu H, Shao J, Qu JH, Li M, Zhaiman H, Wang Q, Jiang Z. Biomimetic affinity membrane roll column for rapid purification of C-reactive protein. J Chromatogr A 2024; 1713:464541. [PMID: 38041978 DOI: 10.1016/j.chroma.2023.464541] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2023] [Revised: 11/26/2023] [Accepted: 11/27/2023] [Indexed: 12/04/2023]
Abstract
To in-depth explore the action mechanism of C-reactive protein (CRP) and precisely study its signaling pathways, it is essential to acquire high-purity CRP while preserving its intact structure and functionality. In this study, we propose and fabricate a high-density 2-methacryloyloxyethyl phosphorylcholine (MPC)-modified membrane roll column (MPC-MRC) using a surface-initiated atom transfer radical polymerization (SI-ATRP) approach, which can overcome these limitations (long incubation time and low adsorption capacity) of conventional enrichment materials. The MPC-MRC incorporates a high-density 2-hydroxyethyl methacrylate polymer brush to prevent non-specific protein adsorption and multiple MPC polymer brush layers for high-performance enrichment of CRP in the company of calcium ions. Furthermore, the MPC-MRC exhibits high permeability, hydrophilicity, and mechanical strength. Compared to previous technologies, this novel material demonstrates significantly higher CRP binding capacity (310.3 mg/g), shorter processing time (only 15 min), and lower cost (only 12 USD/column). Notably, the MPC-MRC enables fast and effective purification of CRP from both human and rat serum, exhibiting good selectivity, recovery (> 91.3 %), and purity (> 95.2 %). Thus, this proposed purification approach based on MPC-MRC holds great potential for target protein enrichment from complex samples, as well as facilitating in-depth studies of its biological functions.
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Affiliation(s)
- Jingwei Zhou
- Institute of Pharmaceutical Analysis, College of Pharmacy/State Key Laboratory of Bioactive Molecules and Druggability Assessment/International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Ministry of Education (MOE) of China, Jinan University, Guangzhou 510632, China
| | - Huihui Wu
- Occupational Health Laboratory, Anhui No.2 Provincial People's Hospital/Anhui No.2 Provincial People's Hospital Clinical College, Anhui Medical University, Anhui, 230041, PR China
| | - Jianxiong Shao
- Institute of Pharmaceutical Analysis, College of Pharmacy/State Key Laboratory of Bioactive Molecules and Druggability Assessment/International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Ministry of Education (MOE) of China, Jinan University, Guangzhou 510632, China
| | - Jia-Huan Qu
- Institute of Pharmaceutical Analysis, College of Pharmacy/State Key Laboratory of Bioactive Molecules and Druggability Assessment/International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Ministry of Education (MOE) of China, Jinan University, Guangzhou 510632, China
| | - Minyi Li
- Institute of Pharmaceutical Analysis, College of Pharmacy/State Key Laboratory of Bioactive Molecules and Druggability Assessment/International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Ministry of Education (MOE) of China, Jinan University, Guangzhou 510632, China
| | - Huayun Zhaiman
- Institute of Pharmaceutical Analysis, College of Pharmacy/State Key Laboratory of Bioactive Molecules and Druggability Assessment/International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Ministry of Education (MOE) of China, Jinan University, Guangzhou 510632, China
| | - Qiqin Wang
- Institute of Pharmaceutical Analysis, College of Pharmacy/State Key Laboratory of Bioactive Molecules and Druggability Assessment/International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Ministry of Education (MOE) of China, Jinan University, Guangzhou 510632, China; Key Laboratory of Drug-Targeting and Drug Delivery System of Sichuan Province, Sichuan, 610065, PR China.
| | - Zhengjin Jiang
- Institute of Pharmaceutical Analysis, College of Pharmacy/State Key Laboratory of Bioactive Molecules and Druggability Assessment/International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Ministry of Education (MOE) of China, Jinan University, Guangzhou 510632, China.
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3
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Zhu C, Han H, Chen Z, Shen Y, Zhang Q, Bao C, Qu JH, Wang Q, Jiang Z. Tetrapeptide-based mimotope affinity monolith for the enrichment and analysis of anti-HER2 antibody and antibody-drug conjugate. Anal Chim Acta 2023; 1246:340892. [PMID: 36764776 DOI: 10.1016/j.aca.2023.340892] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2022] [Revised: 01/24/2023] [Accepted: 01/24/2023] [Indexed: 01/27/2023]
Abstract
Selective enrichment and analysis of therapeutic antibodies in biological fluids are crucial for the development of biopharmaceuticals. Recently, peptide-based affinity chromatography has exhibited fascinating prospects for antibody enrichment due to the high affinity and specificity of small peptides. However, the post-modification approach of peptide ligands on the material surface is complicated and time-consuming. In this study, a methacrylate modified tetrapeptide (m-EDPW) was firstly demonstrated as the affinity ligand of trastuzumab (Kd = 1.91 ± 1.81 μM). Next, the m-EDPW based affinity monolith was prepared using a facile one-step polymerization method, which could overcome the drawbacks of traditional post-modification preparation strategies. Based on the monolith as described above, a simple enrichment approach was developed under the optimal washing and elution conditions. Based on the excellent properties, such as high porosity (53.09%), weak electrostatic interaction and suitable affinity (1.00 ± 2.14 μM for anti-HER2 ADC), this novel monolith exhibited good specificity and recovery for antibodies (91.6% for trastuzumab, 98.37% for anti-HER2 ADC), and low nonspecific adsorption for human serum albumin (DBC10% = 0.5 mg/g polymer). Particularly, this material was successfully applied to enrich trastuzumab and its related antibody-drug conjugate (ADC) from different cell culture medias. The dynamic tracking analysis of ADC in the critical quality attributes (e.g., charge variants, drug to antibody ratio and subunit conjugation ratio) was also achieved by combining the enrichment approach, capillary electrophoresis or reversed phase liquid chromatography. In summary, the exploited peptide-based mimotope affinity materials showed a great potential for the application in biopharmaceutical analysis.
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Affiliation(s)
- Chendi Zhu
- Institute of Traditional Chinese Medicine & Natural Products, College of Pharmacy/Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, Jinan University, Guangzhou, 510632, China
| | - Hai Han
- Institute of Traditional Chinese Medicine & Natural Products, College of Pharmacy/Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, Jinan University, Guangzhou, 510632, China
| | - Zhiwei Chen
- Institute of Traditional Chinese Medicine & Natural Products, College of Pharmacy/Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, Jinan University, Guangzhou, 510632, China
| | - Yuan Shen
- Institute of Traditional Chinese Medicine & Natural Products, College of Pharmacy/Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, Jinan University, Guangzhou, 510632, China
| | - Qiaoxuan Zhang
- Department of Laboratory Medicine, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, 510120, China
| | - Cai Bao
- Bio-Thera Solutions, Ltd., Guangzhou, 510700, China
| | - Jia-Huan Qu
- Institute of Traditional Chinese Medicine & Natural Products, College of Pharmacy/Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, Jinan University, Guangzhou, 510632, China
| | - Qiqin Wang
- Institute of Traditional Chinese Medicine & Natural Products, College of Pharmacy/Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, Jinan University, Guangzhou, 510632, China.
| | - Zhengjin Jiang
- Institute of Traditional Chinese Medicine & Natural Products, College of Pharmacy/Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, Jinan University, Guangzhou, 510632, China.
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Zang BY, Qu JH, Zhou JW, Wang WQ, Liu MZ, Li MR, Zhao HY, Zhang R, Liu YN, Wang LJ, Wan X, Sun F, Wu J. [Progress in research of determinants of healthy life expectancy]. Zhonghua Liu Xing Bing Xue Za Zhi 2022; 43:1811-1820. [PMID: 36444467 DOI: 10.3760/cma.j.cn112338-20220629-00575] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Objective: To analyze the influencing factors of healthy life expectancy (HLE). Methods: Seven Chinese and English databases were used for the retrieval of related literatures published by May 7, 2022 to identify influencing factors of HLE, including diseases and injuries and their risk factors. Based on the ecological model of health determinants, this study classifies the risk factors of diseases and injuries into five levels: personal characteristics, individual behavior and lifestyle, social network, living and working conditions, and macroscopic socio-economic, cultural and environmental conditions. Contents of research area, HLE indicators, research population, influencing factors, data sources and results were extracted. The frequencies of reported documents of different HLE indicators and influencing factors of different dimensions were visualized by using evidence map, and the empirical studies of four authoritative English medical journals and Chinese core medical journals were further compared and described. Results: A total of 90 studies were selected, in which 26 were conducted in China (28.9%). Fifty-three studies are about diseases and injuries in the first dimension, and all of them have studied non-communicable diseases, accounting for the highest proportion (58.9%). There were 77 studies about the analysis on the determinants of health at five levels by an ecological model, all the studies reported multi-level results. Among them, 53 studies reported personal characteristics (58.9%), 47 studies reported individual behavior and lifestyle (52.2%), 10 studies reported social networks (11.1%), 35 studies reported living and working environment (38.9%), 8 studies reported social economy, culture status and environment condition (8.9%). The literatures about HLE published by 4 authoritative English medical journals and 21 Chinese core medical journals in recent three years were selected. Non-communicable diseases and personal characteristics were the top two most commonly studied factors of HLE, and 11 (52.3%) and 12 (57.1%) studies reported these two kinds of factors respectively. The most important factor contributing to the global disability-adjusted life years of non-communicable diseases was individual behavior and lifestyle, which was the most changeable factor. Conclusions: In recent three years, studies involving influencing factors of HLE were mainly non-communicable diseases and personal characteristics. In the future, individual behavior, lifestyle and working environment should be strengthened.
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Affiliation(s)
- B Y Zang
- School of Public Health, Peking University, Beijing 100191, China
| | - J H Qu
- School of Public Health, Peking University, Beijing 100191, China Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100730, China
| | - J W Zhou
- School of Public Health, Peking University, Beijing 100191, China
| | - W Q Wang
- School of Public Health, Peking University, Beijing 100191, China
| | - M Z Liu
- School of Public Health, Peking University, Beijing 100191, China
| | - M R Li
- School of Public Health, Peking University, Beijing 100191, China
| | - H Y Zhao
- School of Public Health, Peking University, Beijing 100191, China
| | - R Zhang
- National Center for Chronic and Non-communicable Disease Prevention and Control, Chinese Center for Disease Control and Prevention, Beijing 100050, China
| | - Y N Liu
- National Center for Chronic and Non-communicable Disease Prevention and Control, Chinese Center for Disease Control and Prevention, Beijing 100050, China
| | - L J Wang
- National Center for Chronic and Non-communicable Disease Prevention and Control, Chinese Center for Disease Control and Prevention, Beijing 100050, China
| | - X Wan
- Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences, Beijing 100005, China
| | - F Sun
- School of Public Health, Peking University, Beijing 100191, China
| | - Jing Wu
- National Center for Chronic and Non-communicable Disease Prevention and Control, Chinese Center for Disease Control and Prevention, Beijing 100050, China
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5
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Qu JH, Ordutowski H, Van Tricht C, Verbruggen R, Barcenas Gallardo A, Bulcaen M, Ciwinska M, Gutierrez Cisneros C, Devriese C, Guluzade S, Janssens X, Kornblum S, Lu Y, Marolt N, Nanjappan C, Rutten E, Vanhauwaert E, Geukens N, Thomas D, Dal Dosso F, Safdar S, Spasic D, Lammertyn J. Point-of-care therapeutic drug monitoring of adalimumab by integrating a FO-SPR biosensor in a self-powered microfluidic cartridge. Biosens Bioelectron 2022; 206:114125. [DOI: 10.1016/j.bios.2022.114125] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2021] [Revised: 01/31/2022] [Accepted: 02/20/2022] [Indexed: 12/11/2022]
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Qu JH, Leirs K, Maes W, Imbrechts M, Callewaert N, Lagrou K, Geukens N, Lammertyn J, Spasic D. Innovative FO-SPR Label-free Strategy for Detecting Anti-RBD Antibodies in COVID-19 Patient Serum and Whole Blood. ACS Sens 2022; 7:477-487. [PMID: 35061357 PMCID: PMC8806028 DOI: 10.1021/acssensors.1c02215] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2021] [Accepted: 01/12/2022] [Indexed: 12/14/2022]
Abstract
The ongoing COVID-19 pandemic has emphasized the urgent need for rapid, accurate, and large-scale diagnostic tools. Next to this, the significance of serological tests (i.e., detection of SARS-CoV-2 antibodies) also became apparent for studying patients' immune status and past viral infection. In this work, we present a novel approach for not only measuring antibody levels but also profiling of binding kinetics of the complete polyclonal antibody response against the receptor binding domain (RBD) of SARS-CoV-2 spike protein, an aspect not possible to achieve with traditional serological tests. This fiber optic surface plasmon resonance (FO-SPR)-based label-free method was successfully accomplished in COVID-19 patient serum and, for the first time, directly in undiluted whole blood, omitting the need for any sample preparation. Notably, this bioassay (1) was on par with FO-SPR sandwich bioassays (traditionally regarded as more sensitive) in distinguishing COVID-19 from control samples, irrespective of the type of sample matrix, and (2) had a significantly shorter time-to-result of only 30 min compared to >1 or 4 h for the FO-SPR sandwich bioassay and the conventional ELISA, respectively. Finally, the label-free approach revealed that no direct correlation was present between antibody levels and their kinetic profiling in different COVID-19 patients, as another evidence to support previous hypothesis that antibody-binding kinetics against the antigen in patient blood might play a role in the COVID-19 severity. Taking all this into account, the presented work positions the FO-SPR technology at the forefront of other COVID-19 serological tests, with a huge potential toward other applications in need for quantification and kinetic profiling of antibodies.
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Affiliation(s)
- Jia-Huan Qu
- Department of Biosystems, Biosensors Group,
KU Leuven, Willem de Croylaan 42, 3001 Leuven,
Belgium
| | - Karen Leirs
- Department of Biosystems, Biosensors Group,
KU Leuven, Willem de Croylaan 42, 3001 Leuven,
Belgium
| | - Wim Maes
- PharmAbs, KU Leuven,
Herestraat 49, Box 820, 3000 Leuven, Belgium
| | - Maya Imbrechts
- PharmAbs, KU Leuven,
Herestraat 49, Box 820, 3000 Leuven, Belgium
| | | | - Katrien Lagrou
- Department of Microbiology, Immunology and
Transplantation, Laboratory of Clinical Bacteriology and Mycology, KU
Leuven, 3000 Leuven, Belgium
- Department of Laboratory Medicine and National
Reference Centre for Respiratory Pathogens, University Hospitals
Leuven, 3000 Leuven, Belgium
| | - Nick Geukens
- PharmAbs, KU Leuven,
Herestraat 49, Box 820, 3000 Leuven, Belgium
| | - Jeroen Lammertyn
- Department of Biosystems, Biosensors Group,
KU Leuven, Willem de Croylaan 42, 3001 Leuven,
Belgium
| | - Dragana Spasic
- Department of Biosystems, Biosensors Group,
KU Leuven, Willem de Croylaan 42, 3001 Leuven,
Belgium
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Qu JH, Leirs K, Escudero R, Strmšek Ž, Jerala R, Spasic D, Lammertyn J. Novel Regeneration Approach for Creating Reusable FO-SPR Probes with NTA Surface Chemistry. Nanomaterials (Basel) 2021; 11:186. [PMID: 33451032 PMCID: PMC7828519 DOI: 10.3390/nano11010186] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Revised: 01/07/2021] [Accepted: 01/11/2021] [Indexed: 12/15/2022]
Abstract
To date, surface plasmon resonance (SPR) biosensors have been exploited in numerous different contexts while continuously pushing boundaries in terms of improved sensitivity, specificity, portability and reusability. The latter has attracted attention as a viable alternative to disposable biosensors, also offering prospects for rapid screening of biomolecules or biomolecular interactions. In this context here, we developed an approach to successfully regenerate a fiber-optic (FO)-SPR surface when utilizing cobalt (II)-nitrilotriacetic acid (NTA) surface chemistry. To achieve this, we tested multiple regeneration conditions that can disrupt the NTA chelate on a surface fully saturated with His6-tagged antibody fragments (scFv-33H1F7) over ten regeneration cycles. The best surface regeneration was obtained when combining 100 mM EDTA, 500 mM imidazole and 0.5% SDS at pH 8.0 for 1 min with shaking at 150 rpm followed by washing with 0.5 M NaOH for 3 min. The true versatility of the established approach was proven by regenerating the NTA surface for ten cycles with three other model system bioreceptors, different in their size and structure: His6-tagged SARS-CoV-2 spike fragment (receptor binding domain, RBD), a red fluorescent protein (RFP) and protein origami carrying 4 RFPs (Tet12SN-RRRR). Enabling the removal of His6-tagged bioreceptors from NTA surfaces in a fast and cost-effective manner can have broad applications, spanning from the development of biosensors and various biopharmaceutical analyses to the synthesis of novel biomaterials.
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Affiliation(s)
- Jia-Huan Qu
- Biosensors Group, Department of Biosystems, KU Leuven, Willem de Croylaan 42, 3001 Leuven, Belgium; (J.-H.Q.); (K.L.); (R.E.)
| | - Karen Leirs
- Biosensors Group, Department of Biosystems, KU Leuven, Willem de Croylaan 42, 3001 Leuven, Belgium; (J.-H.Q.); (K.L.); (R.E.)
| | - Remei Escudero
- Biosensors Group, Department of Biosystems, KU Leuven, Willem de Croylaan 42, 3001 Leuven, Belgium; (J.-H.Q.); (K.L.); (R.E.)
| | - Žiga Strmšek
- Department of Synthetic Biology and Immunology, National Institute of Chemistry, 1000 Ljubljana, Slovenia; (Ž.S.); (R.J.)
| | - Roman Jerala
- Department of Synthetic Biology and Immunology, National Institute of Chemistry, 1000 Ljubljana, Slovenia; (Ž.S.); (R.J.)
| | - Dragana Spasic
- Biosensors Group, Department of Biosystems, KU Leuven, Willem de Croylaan 42, 3001 Leuven, Belgium; (J.-H.Q.); (K.L.); (R.E.)
| | - Jeroen Lammertyn
- Biosensors Group, Department of Biosystems, KU Leuven, Willem de Croylaan 42, 3001 Leuven, Belgium; (J.-H.Q.); (K.L.); (R.E.)
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Horta S, Qu JH, Dekimpe C, Bonnez Q, Vandenbulcke A, Tellier E, Kaplanski G, Delport F, Geukens N, Lammertyn J, Vanhoorelbeke K. Co(III)-NTA Mediated Antigen Immobilization on a Fiber Optic-SPR Biosensor for Detection of Autoantibodies in Autoimmune Diseases: Application in Immune-Mediated Thrombotic Thrombocytopenic Purpura. Anal Chem 2020; 92:13880-13887. [DOI: 10.1021/acs.analchem.0c02586] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Sara Horta
- Laboratory for Thrombosis Research, IRF Life Sciences, KU Leuven Campus Kulak Kortrijk, Etienne Sabbelaan 53, Kortrijk 8500, Belgium
- Department of Biosystems, Biosensors Group, KU Leuven, Willem De Croylaan 42, Heverlee B-3001, Belgium
| | - Jia-Huan Qu
- Department of Biosystems, Biosensors Group, KU Leuven, Willem De Croylaan 42, Heverlee B-3001, Belgium
| | - Charlotte Dekimpe
- Laboratory for Thrombosis Research, IRF Life Sciences, KU Leuven Campus Kulak Kortrijk, Etienne Sabbelaan 53, Kortrijk 8500, Belgium
| | - Quintijn Bonnez
- Laboratory for Thrombosis Research, IRF Life Sciences, KU Leuven Campus Kulak Kortrijk, Etienne Sabbelaan 53, Kortrijk 8500, Belgium
| | - Aline Vandenbulcke
- Laboratory for Thrombosis Research, IRF Life Sciences, KU Leuven Campus Kulak Kortrijk, Etienne Sabbelaan 53, Kortrijk 8500, Belgium
| | - Edwige Tellier
- INSERM, INRAE, C2VN, Jardin du Pharo, Aix Marseille Univ, 58 Boulevard Charles Livon, 13007 Marseille , France
| | - Gilles Kaplanski
- INSERM, INRAE, C2VN, Jardin du Pharo, Aix Marseille Univ, 58 Boulevard Charles Livon, 13007 Marseille , France
- APHM, INSERM, INRAE, C2VN, Hôpital de la Conception, Service de médecine interne, Aix Marseille Univ, 147 Boulevard Baille, 13005 Marseille, France
| | - Filip Delport
- FOx Biosystems NV, Bioville, Agoralaan Abis, Diepenbeek 3590, Belgium
| | - Nick Geukens
- PharmAbs, The KU Leuven Antibody Center, KU Leuven, Herestraat 49, Leuven 3000, Belgium
| | - Jeroen Lammertyn
- Department of Biosystems, Biosensors Group, KU Leuven, Willem De Croylaan 42, Heverlee B-3001, Belgium
| | - Karen Vanhoorelbeke
- Laboratory for Thrombosis Research, IRF Life Sciences, KU Leuven Campus Kulak Kortrijk, Etienne Sabbelaan 53, Kortrijk 8500, Belgium
- PharmAbs, The KU Leuven Antibody Center, KU Leuven, Herestraat 49, Leuven 3000, Belgium
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Qu JH, Horta S, Delport F, Sillen M, Geukens N, Sun DW, Vanhoorelbeke K, Declerck P, Lammertyn J, Spasic D. Expanding a Portfolio of (FO-) SPR Surface Chemistries with the Co(III)-NTA Oriented Immobilization of His 6-Tagged Bioreceptors for Applications in Complex Matrices. ACS Sens 2020; 5:960-969. [PMID: 32216277 DOI: 10.1021/acssensors.9b02227] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Cobalt-nitrilotriacetic acid (Co(III)-NTA) chemistry is a recognized approach for oriented patterning of His6-tagged bioreceptors. We have applied the matching strategy for the first time on a surface plasmon resonance (SPR) platform, namely, the commercialized fiber optic (FO)-SPR. To accomplish this, His6-tagged bioreceptor (scFv-33H1F7) and its target PAI-1 were used as a model system, after scrutinizing the specificity of their interaction. When benchmarked to traditional carboxyl-based self-assembled monolayers (SAM), NTA allowed (1) more efficient FO-SPR surface coverage with bioreceptors compared with the former and (2) realization of thus far difficult-to-attain label-free bioassays on the FO-SPR platform in both buffer and 20-fold diluted human plasma. Moreover, Co(III)-NTA surface proved to be compatible with traditional gold nanoparticle-mediated signal amplification in the buffer as well as in 10-fold diluted human plasma, thus expanding the dynamic detection range to low ng/mL. Both types of bioassays revealed that scFv-33H1F7 immobilized on the FO-SPR surface using different concentrations (20, 10, or 5 μg/mL) had no impact on the bioassay sensitivity, accuracy, or reproducibility despite the lowest concentration effectively resulting in close to 20% fewer bioreceptors. Collectively, these results highlight the importance of Co(III)-NTA promoting the oriented patterning of bioreceptors on the FO-SPR sensor surface for securing robust and sensitive bioassays in complex matrices, both in label-free and labeled formats.
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Affiliation(s)
- Jia-Huan Qu
- Department of Biosystems, Biosensors Group, KU Leuven, Willem de Croylaan 42, 3001 Leuven, Belgium
| | - Sara Horta
- Laboratory for Thrombosis Research, IRF Life Sciences, KU Leuven Campus Kulak, 8500 Kortrijk, Belgium
| | - Filip Delport
- FOx Biosystems, Bioville, Agoralaan Abis, 3590 Diepenbeek, Belgium
| | - Machteld Sillen
- Department of Pharmaceutical and Pharmacological Sciences, Laboratory for Therapeutic and Diagnostic Antibodies, KU Leuven, O&N II Herestraat 49, 3000 Leuven, Belgium
| | - Nick Geukens
- PharmAbs, KU Leuven, Herestraat 49,
Box 820, B 3000 Leuven, Belgium
| | - Da-Wen Sun
- School of Food Science and Engineering, South China University of Technology, 510641 Guangzhou, China
| | - Karen Vanhoorelbeke
- Laboratory for Thrombosis Research, IRF Life Sciences, KU Leuven Campus Kulak, 8500 Kortrijk, Belgium
| | - Paul Declerck
- Department of Pharmaceutical and Pharmacological Sciences, Laboratory for Therapeutic and Diagnostic Antibodies, KU Leuven, O&N II Herestraat 49, 3000 Leuven, Belgium
| | - Jeroen Lammertyn
- Department of Biosystems, Biosensors Group, KU Leuven, Willem de Croylaan 42, 3001 Leuven, Belgium
| | - Dragana Spasic
- Department of Biosystems, Biosensors Group, KU Leuven, Willem de Croylaan 42, 3001 Leuven, Belgium
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Qu JH, Dillen A, Saeys W, Lammertyn J, Spasic D. Advancements in SPR biosensing technology: An overview of recent trends in smart layers design, multiplexing concepts, continuous monitoring and in vivo sensing. Anal Chim Acta 2019; 1104:10-27. [PMID: 32106939 DOI: 10.1016/j.aca.2019.12.067] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2019] [Revised: 12/04/2019] [Accepted: 12/24/2019] [Indexed: 12/22/2022]
Abstract
Inspired by the rapid progress and existing limitations in surface plasmon resonance (SPR) biosensing technology, we have summarized the recent trends in the fields of both chip-SPR and fiber optic (FO)-SPR biosensors during the past five years, primarily regarding smart layers design, multiplexing, continuous monitoring and in vivo sensing. Versatile surface chemistries, biomaterials and nanomaterials have been utilized thus far to generate smart layers on SPR platforms and as such achieve oriented immobilization of bioreceptors, improved fouling resistance and sensitivity enhancement, collectively aiming to improve the biosensing performance. Furthermore, often driven by the desires for time- and cost-effective quantification of multiple targets in a single measurement, efforts have been made to implement multiplex bioassays on SPR platforms. While this aspect largely remains difficult to attain, numerous alternative strategies arose for obtaining parallel analysis of multiple analytes in one single device. Additionally, one of the upcoming challenges in this field will be to succeed in using SPR platforms for continuous measurements and in vivo sensing, and as such match up other biosensing platforms where these goals have been already conquered. Overall, this review will give insight into multiple possibilities that have become available over the years for boosting the performance of SPR biosensors. However, because combining them all into one optimal sensor is practically not feasible, the final application needs to be considered while designing an SPR biosensor, as this will determine the requirements of the bioassay and will thus help in selecting the essential elements from the recent progress made in SPR sensing.
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Affiliation(s)
- Jia-Huan Qu
- KU Leuven, Department of Biosystems - Biosensors Group, Willem de Croylaan 42, Box 2428, 3001, Leuven, Belgium
| | - Annelies Dillen
- KU Leuven, Department of Biosystems - Biosensors Group, Willem de Croylaan 42, Box 2428, 3001, Leuven, Belgium
| | - Wouter Saeys
- KU Leuven, Department of Biosystems, MeBioS - Biophotonics, Kasteelpark Arenberg 30, Box 2456, 3001, Leuven, Belgium
| | - Jeroen Lammertyn
- KU Leuven, Department of Biosystems - Biosensors Group, Willem de Croylaan 42, Box 2428, 3001, Leuven, Belgium.
| | - Dragana Spasic
- KU Leuven, Department of Biosystems - Biosensors Group, Willem de Croylaan 42, Box 2428, 3001, Leuven, Belgium
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Liu Y, Yuan HL, Duan XL, Xu JL, Qu JH, Chen G, Shi J, Han CX, Ding LL, Jiang M. [Clinical research of HLA-haploidentical peripheral hematopoietic stem cell transplantation following reduced intensity conditioning regimen with hematological malignancy patients over 50 years old]. Zhonghua Xue Ye Xue Za Zhi 2019; 40:667-672. [PMID: 31495134 PMCID: PMC7342871 DOI: 10.3760/cma.j.issn.0253-2727.2019.08.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
目的 分析减低剂量预处理单倍型外周血造血干细胞移植(RIC-haplo-PBSCT)治疗50岁以上恶性血液肿瘤患者的疗效。 方法 18例50岁以上恶性血液肿瘤患者纳入研究,男8例,女10例,中位年龄52(50~66)岁;急性髓系白血病(AML)8例,慢性髓性白血病(CML)2例,骨髓增生异常综合征(MDS)5例,急性淋巴细胞白血病(ALL)2例,急性NK细胞白血病(ANKL)1例;采用FAB+ATG(氟达拉滨+阿糖胞苷+白消安+兔抗人胸腺细胞免疫球蛋白)减低剂量预处理方案,输注供者高剂量非去T细胞外周血造血干细胞(PBSC),应用强化移植物抗宿主病(GVHD)预防方案及感染防控措施。 结果 16例患者在移植后15 d获得完全供者嵌合,其中1例在移植后1个月发生移植排斥,其余2例在移植后15 d为混合嵌合并于移植后1个月发生移植排斥。急性GVHD发生率为61.1%(95%CI 49.6%~72.6%),Ⅱ~Ⅳ度急性GVHD发生率为35.4%(95%CI 21.1%~49.7%),Ⅲ/Ⅳ度急性GVHD发生率为13.8%(95%CI 4.7%~22.9%)。2年慢性GVHD累积发生率为38.2%(95%CI 25.5%~50.9%),未发生广泛型慢性GVHD。中位随访14.5(3~44)个月,2年总生存率、无病生存率分别为72.6%(95%CI 60.1%~85.1%)、63.7%(95%CI 49.2%~78.2%),2年累积复发率为31.2%(95%CI 16.5%~45.9%),2年非复发死亡率为12.5%(95%CI 4.2%~20.8%)。 结论 RIC-haplo-PBSCT治疗50岁以上恶性血液肿瘤患者可获得较好的疗效。
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Affiliation(s)
- Y Liu
- Hematologic Disease Center, First Affiliated Hospital of Xinjiang Medical University, Urumqi 830054, China; Xinjiang Uygur Autonomous Region Research Institute of Hematology, Urumqi 830061, China
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Affiliation(s)
- Jia-Huan Qu
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510641, China
- Academy of Contemporary Food Engineering, South China University of Technology, Guangzhou Higher Education Mega Center, Guangzhou 510006, China
- Engineering and Technological Research Centre of Guangdong Province on Intelligent Sensing and Process Control of Cold Chain Foods, Guangzhou Higher Education Mega Center, Guangzhou 510006, China
| | - Qingyi Wei
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510641, China
- Academy of Contemporary Food Engineering, South China University of Technology, Guangzhou Higher Education Mega Center, Guangzhou 510006, China
- Engineering and Technological Research Centre of Guangdong Province on Intelligent Sensing and Process Control of Cold Chain Foods, Guangzhou Higher Education Mega Center, Guangzhou 510006, China
| | - Da-Wen Sun
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510641, China
- Academy of Contemporary Food Engineering, South China University of Technology, Guangzhou Higher Education Mega Center, Guangzhou 510006, China
- Engineering and Technological Research Centre of Guangdong Province on Intelligent Sensing and Process Control of Cold Chain Foods, Guangzhou Higher Education Mega Center, Guangzhou 510006, China
- Food Refrigeration and Computerised Food Technology (FRCFT), Agriculture and Food Science Centre, University College Dublin, National University of Ireland, Belfield, Dublin 4, Ireland
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Qu JH, Wang ZQ, Zhang Y, Sun XG. [Clinical study on the corneal epithelial dysfunction after cataract extraction]. Zhonghua Yan Ke Za Zhi 2017; 53:188-192. [PMID: 28316193 DOI: 10.3760/cma.j.issn.0412-4081.2017.03.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To study the clinical manifestations, diagnosis and treatment of corneal epithelial dysfunction after cataract extraction. Methods: Fifteen cases diagnosed as corneal epithelial dysfunction after cataract extraction between November 2014 and September 2016 were retrospectively analyzed, mainly including clinical manifestations, characteristics of morphological changes imaged by in vivo laser confocal microscopy, management and therapeutic effects. Results: There were 6 (40%) males and 9 (60%) females with an average age of 66±7 years (59 to 86 years). Three patients had meibomian gland dysfunction. The clinical manifestations of corneal epithelial dysfunction after cataract extraction were corneal epithelial permeability increase, limitations of epithelial edema, corneal epithelial dot staining, corneal epithelial defects and ulceration. In vivo laser confocal microscopy showed enhanced reflection of the nucleus of the corneal basal cells, abnormal cell structure and decreased cell density. The morphology of corneal sub-basal nerve plexus was disordered and diminutive. After the therapy of protecting corneal epithelium and promoting healing, all 15 cases were cured completely. Conclusions: The early characteristics of cataract extraction-related corneal epithelial dysfunction are edema of the corneal epithelium and dot staining. Delayed diagnosis and treatment may result in filamentous keratitis and corneal ulcers. Timely use of corneal epithelium protection medicine may contribute to a favorable prognosis. (Chin J Ophthalmol, 2017, 53:188-192).
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Affiliation(s)
- J H Qu
- Beijing Institute of Ophthalmology, Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University; Beijing Ophthalmology & Visual Sciences Key Laboratory. Beijing 100005, China
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Cong XC, Yang GS, Qu JH, Dai MX. Evaluating the dynamical characteristics of particle matter emissions in an open ore yard with industrial operation activities. Environ Sci Pollut Res Int 2016; 23:21336-21349. [PMID: 27502458 DOI: 10.1007/s11356-016-7289-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2016] [Accepted: 07/19/2016] [Indexed: 06/06/2023]
Abstract
A study to investigate the dynamical characteristics of particle matter emissions in a working open yard is conducted in Caofeidian Port of Hebei Province, China. The average diurnal concentrations of the total suspended particulate (TSP) matter and respirable particulate matter (PM10 and PM5) are monitored during the field measurement campaign. Sampling is performed at a regular interval at 8 monitoring stations in the yard with normal industrial activities. The average TSP, PM10 and PM5 concentrations range from 285 to 568, 198 to 423 and 189 to 330 μg.m-3 in the yard, respectively. The linear regression correlation coefficient of TSP/PM10 and TSP/PM5 is 0.95±0.01 and 0.88±0.02, respectively.By using the Spearman correlation method, the wind speed and relative humidity are both weakly correlated with the PM10 and PM5 concentrations according to the measurements. In addition, industrial operation activities, such as vehicular traffic in the yard and the loading time of stackers, are significantly positively correlated with the PM concentration. Using the multivariate regression method, the main parameters influencing the TSP concentration variations are integratedly analysed. The traffic volume is found to be a significant predictor of TSP concentration variation, with the smallest P value (P<0.05).To understand the dynamical characteristics of particle emissions in the yard, the emissions from the truck transports, that is, from unpaved haul roads and from the loading process, are established. Then, the dynamical emission factor (EFD) based on the industrial activities in the yard is proposed. The dynamical emissions average 5.25x105 kg.year-1 and EFD is evaluated to be 0.29 kg.(ton.day)-1 during the measurement period. These outcomes have meaningful implications not only for understanding the dynamical characteristics of particle emissions in the working stockyard but also for implementing effective control measures at appropriate sites in the harbour area.
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Affiliation(s)
- X C Cong
- Shandong Provincial Key Laboratory of Civil Engineering Disaster Prevention and Mitigation, Shandong University of Science and Technology, Qingdao, 266590, China.
- Tianjin Research Institute for Water Transport Engineering Ministry of Transport, Tianjin, 300456, People's Republic of China.
| | - G S Yang
- Shandong Provincial Key Laboratory of Civil Engineering Disaster Prevention and Mitigation, Shandong University of Science and Technology, Qingdao, 266590, China
| | - J H Qu
- Shandong Provincial Key Laboratory of Civil Engineering Disaster Prevention and Mitigation, Shandong University of Science and Technology, Qingdao, 266590, China
| | - M X Dai
- Tianjin Research Institute for Water Transport Engineering Ministry of Transport, Tianjin, 300456, People's Republic of China
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Abstract
The cylinder cells at the bottom of corneal epithelial cells are basal cells. Their cytoplasm contains keratin intermediate filament which is important in secretion of basement membrane. Corneal epithelial dysfunction due to diabetes or ocular surgery is intimately related with basal cell abnormality. Corneal epithelial basement membrane is a highly specific extracellular matrix which is made up of lamina lucida and lamina densa. It plays an extremely important role in renewal and restoration. Many ocular abnormalities and diseases have been described to relate to the corneal epithelial basement membrane, such as traumatic recurrent corneal erosion, corneal dystrophy and keratoconus. (Chin J Ophthalmol, 2016, 52: 703-707).
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Affiliation(s)
- J H Qu
- Beijing Institute of Ophthalmology, Beijing Tongren Eye Center, Beijing Tongren Hospital of Capital Medical University, Beijing Ophthalmology & Visual Sciences Key Lab., Beijing 100005, China
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Wang XY, Jiang M, Qu JH, Duan XL, Yuan HL, Wang L, Xu JL, Ding LL, Nadia Abdul C, Li L, Eed A, Guo XH, Wen BZ. [Comparisons of occurrence and curative effect of interstitial pneumonia after the related HLA-haploidentical and HLA-matched sibling peripheral blood hematopoietic stem cell transplantation]. Zhonghua Xue Ye Xue Za Zhi 2016; 37:458-63. [PMID: 27431067 PMCID: PMC7348327 DOI: 10.3760/cma.j.issn.0253-2727.2016.06.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/27/2015] [Indexed: 11/25/2022]
Abstract
OBJECTIVE To compare occurrence and curative effect of interstitial pneumonia (IP) of patients with malignant hematologic disease after related HLA-haploidentical peripheral blood stem cell transplantation without T-cell depletion (RHNT-PBSCT) and non T cell-depleted HLA-matched sibling peripheral blood stem cell transplantation (MSNT-PBSCT). METHODS 109 patients with malignant hematologic disease as the research cases received RHNT-PBSCT from January 2006 to December 2014, which were compared with 125 patients treated with MSNT-PBSCT during the same period to determine the occurrence of IP and curative effect produced by ganciclovir and joint adrenal glucocorticoids. RESULTS The incidences of IP in RHNT-PBSCT and MSNT-PBSCT groups were 15.60%(17/109) and 13.60%(17/125) (P=0.150), respectively; both the effective rates were 76.47%(13/17) (P=0.536), the difference was not statistically significant. Single factor analysis showed that acute graft versus host disease was a risk factor for the occurrence of IP after RHNT-PBSCT (P=0.001). CONCLUSION The incidence of IP in patients with malignant hematologic disease after RHNT-PBSCT didn' t increase when compared with patients after MSNT-PBSCT. The curative effects of the two groups were equivalent after priority to ganciclovir and joint adrenal glucocorticoids.
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Affiliation(s)
- X Y Wang
- Hematologic Disease Center, First Affiliated Hospital of Xinjiang Medical University, Xinjiang Uygur Autonomous Region Research Institute of Hematology, Urumqi 830054, China
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Qu JH, Liu D, Cheng JH, Sun DW, Ma J, Pu H, Zeng XA. Applications of near-infrared spectroscopy in food safety evaluation and control: a review of recent research advances. Crit Rev Food Sci Nutr 2016; 55:1939-54. [PMID: 24689758 DOI: 10.1080/10408398.2013.871693] [Citation(s) in RCA: 85] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Food safety is a critical public concern, and has drawn great attention in society. Consequently, developments of rapid, robust, and accurate methods and techniques for food safety evaluation and control are required. As a nondestructive and convenient tool, near-infrared spectroscopy (NIRS) has been widely shown to be a promising technique for food safety inspection and control due to its huge advantages of speed, noninvasive measurement, ease of use, and minimal sample preparation requirement. This review presents the fundamentals of NIRS and focuses on recent advances in its applications, during the last 10 years of food safety control, in meat, fish and fishery products, edible oils, milk and dairy products, grains and grain products, fruits and vegetables, and others. Based upon these applications, it can be demonstrated that NIRS, combined with chemometric methods, is a powerful tool for food safety surveillance and for the elimination of the occurrence of food safety problems. Some disadvantages that need to be solved or investigated with regard to the further development of NIRS are also discussed.
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Affiliation(s)
- Jia-Huan Qu
- a College of Light Industry and Food Sciences, South China University of Technology , Guangzhou , PR China
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Qu JH, Cheng JH, Sun DW, Pu H, Wang QJ, Ma J. Discrimination of shelled shrimp (Metapenaeus ensis) among fresh, frozen-thawed and cold-stored by hyperspectral imaging technique. Lebensm Wiss Technol 2015. [DOI: 10.1016/j.lwt.2015.01.018] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Ma J, Sun DW, Qu JH, Liu D, Pu H, Gao WH, Zeng XA. Applications of Computer Vision for Assessing Quality of Agri-food Products: A Review of Recent Research Advances. Crit Rev Food Sci Nutr 2014; 56:113-27. [DOI: 10.1080/10408398.2013.873885] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Cheng JH, Qu JH, Sun DW, Zeng XA. Visible/near-infrared hyperspectral imaging prediction of textural firmness of grass carp (Ctenopharyngodon idella) as affected by frozen storage. Food Res Int 2014. [DOI: 10.1016/j.foodres.2013.12.009] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Ru J, Liu HJ, Qu JH, Wang AM, Dai RH, Wang ZJ. Selective removal of organochlorine pesticides (OCPs) from aqueous solution by triolein-embedded composite adsorbent. J Environ Sci Health B 2007; 42:53-61. [PMID: 17162568 DOI: 10.1080/03601230601020845] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
A novel composite adsorbent (CA-T) was used for the selective removal of organochlorine pesticides (OCPs) from aqueous solution. The adsorbent was composed of the supporting activated carbon and the surrounding triolein-embedded cellulose acetate membrane. Scanning electron microscopy (SEM), N2 adsorption isotherms and fluorescence methods were used to characterize the physicochemical properties of CA-T. Triolein was perfectly embedded in the cellulose acetate membrane and deposited on the surface of activated carbon. The adsorbent was stable in water and no triolein leakage was detected during the test periods. Some organochlorine pesticides (OCPs), such as dieldrin, endrin, aldrin, and heptachlor epoxide, were used as model contaminants and removed by CA-T in laboratory batch experiments. The adsorption isotherm followed the Freundlich equation and the kinetic data fitted well to the pseudo-second-order reaction model. Results also indicated that CA-T appeared to be a promising adsorbent with good selectivity and satisfactory removal rate for lipophilic OCPs from aqueous solutions when present in trace amounts. The adsorption rate and removal efficiency for lipophilic OCPs were positively related to their octanol-water partition coefficients (log K(ow)). Lower residual concentrations of OCPs were achieved when compared to granular activated carbon (GAC).
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Affiliation(s)
- J Ru
- State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, China
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Zhong YW, Cheng J, Qu JH, Zhang LY, Guo J, Li XD, Xu DP. [Screening and cloning of the down-regulation gene by recombinant interferon-B using suppression subtractive hybridization technique.]. Zhonghua Shi Yan He Lin Chuang Bing Du Xue Za Zhi 2006; 20:273-5. [PMID: 17086292] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
BACKGROUND To construct a subtractive cDNA library of target genes down-regulated in human hepatocarcinoma cell line HepG2 cells treated with IFNB, and clone genes of the down-regulation by IFNB using suppression subtractive hybridization (SSH) technology and bioinformatics techniques. METHODS The mRNA was isolated from HepG2 cells induced by recombinant interferon-B and 0.9 percent sodium chloride, respectively, then cDNA was synthesized. After restriction enzyme Rsa I digestion, small sizes cDNAs were obtained. Then tester cDNA was divided into two portions and each was ligated to the specific cDNA adaptor 1 and adaptor 2 respectively. After tester cDNA was hybridized with driver cDNA twice and underwent two times of nested PCR, the DNA fragment was subcloned into T/A plasmid vectors to set up the subtractive library. Amplification of the library was carried out with E.coli strain DH5a. The cDNA was sequenced and analyzed in GenBank with Blast search after PCR. RESULTS The subtractive library of genes down-regulation in HepG2 cells treated with recombination interferon-B was constructed successfully. The amplified library contained 58 positive clones. Colony PCR and sequence analysis was performed in 35 clones randomly, and the full length sequences were obtained with bioinformatics method. Altogether 12 coding sequences were obtained. CONCLUSION A subtractive cDNA library of genes down-regulation in HepG2 cells treated with IFNB using SSH technique was constructed successfully, which brings some new clues for studying the regulation mechenism of IFNB in liver cells.
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Affiliation(s)
- Y W Zhong
- Viral Hepatitis Research Center, Institute of Infectious Diseases, The No.302 Hospital of The People's Liberation Army, Beijing 100039, China. Corresponding author: ZHONG Yan-wei, E-mail: , Tel: 010-66933392
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Liu HJ, Qu JH. Decolorization of reactive bright red K2G dye: electrochemical process catalyzed by manganese mineral. Water Sci Technol 2002; 46:133-138. [PMID: 12523744] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
This paper presents the results of the decolorization of azo dye K2G by the electrochemical process catalyzed by manganese mineral. It is proved that the MnOOH(s), main component of the manganese mineral, can catalyze the electrochemical process and enhance the decolorization efficiency. X-ray powder diffraction spectrum shows that the content of MnOOH(s) has not been changed at the end of the reaction. The effects of initial pH value, current density, concentration of electrolyte on the decolorization efficiency of the dye were investigated in detail. The initial pH effect on the decolorization efficiency of K2G dye is found not to be significant. The optimum current density is 0.26 A/dm2. In addition, a proposed catalyzing mechanism of manganese mineral is discussed in this paper.
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Affiliation(s)
- H J Liu
- State Key Lab. of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
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Lin L, Zheng YF, Qu JH, Bao GH. [The cellular mechanism of angiotensin II inhibition on BKCa of ECV304 cell and the protective effect of gingko leaf extract]. Zhongguo Yi Xue Ke Xue Yuan Xue Bao 2001; 23:467-71. [PMID: 12905864] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 03/04/2023]
Abstract
OBJECTIVE To observe the cellular mechanism of A II inhibition on Maxi-conductance calcium activated potassium channel (BKCa) in ECV304 cell membrane. METHOD Using the cell-attached configuration of patch clamp technique. RESULTS A II receptor antagonist saralasin (10(-7) mol/L) may block the inhibitory effect of A II (10(-7) mol/L). Phorbol ester (5 x 10(-8) mol/L) potentiated the effect of A II, while NO (10(-10) mol/L SNP) decreased the effect of A II and gingko leaf extract (800 micrograms/ml) activated BKCa and opposed the effects of A II. CONCLUSION A II receptor mediates the inhibitory effect of A II on BKCa in ECV304, and PKC is involved in this inhibition. NO and ginkgo leaf extract protect BKCa from the inhibition of A II.
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Affiliation(s)
- L Lin
- Department of Physiology, Institute of Basic Medical Sciences, CAMS, PUMC, Beijing 100005, China
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Lin L, Zheng YF, Qu JH, Bao GH. [Interfering effects of radix Salviae miltiorrhizae and lingustrazine on mm-LDL activating BKCa in ECV304 cell]. Zhongguo Yi Xue Ke Xue Yuan Xue Bao 2001; 23:386-9. [PMID: 12940083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 03/04/2023]
Abstract
OBJECTIVE To observe the action of minimally modified low density lipoprotein (mm-LDL) on BKCa in ECV304 cell and the interfering effects of radix salviae miltiorrhizae extract powder 764-3 (30 micrograms/ml) and lingustrazine (200 micrograms/ml) on this action. METHOD The cell-attached configuration of patch clamp technique was applied. RESULTS mm-LDL (100 micrograms/ml) potentiated the activity of BKCa in ECV304. While 764-3 and lingustrazine abolished it. CONCLUSIONS mm-LDL acted on vascular endothelial cell ECV304 could rapidly activate the activity of BKCa and might result in the increase of electro-chemical gradient for the resting Ca2+ influx, thus resting cytoplasmic concentration of calcium could be elevated and endothelial dysfunction would be induced. 764-3 and lingustrazine might have the protective action through decreasing the activity of BKCa.
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Affiliation(s)
- L Lin
- Department of Physiology, Institute of Basic Medical Sciences, CAMS and PUMC, Beijing 100005, China
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26
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Chu JY, Yang AD, Wang BM, Hu Z, Zhu XM, Zhang HJ, Qu JH, Luo LY, Guo R, Shi LR. Monoclonal anti-human T cell antibody and PAP-s conjugate--preparation and selective cytotoxic properties on leukemic cell. J Tongji Med Univ 1990; 10:15-8. [PMID: 2348483 DOI: 10.1007/bf02909115] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Pokeweed antiviral protein (PAP-s) was prepared from seeds of Phytolacca americana. Monoclonal antibody against human pan-T lymphocyte Wu71 was linked to PAP-s by a disulfide bond. The results of SDS-PAGE, double immunodiffusion of active monoclonal antibody and PAP-s showed that the conjugate was highly cytotoxic to the human T-leukemic cell line CEM, but not to antigen-negative cell line SP2/O. At a concentration of 10(-9) mol/L, 76.4% of the target cells were killed, as compared with 10.1% at 10(-9) mol/L of free PAP-s. Treatment of the CEM cells with conjugate at 10(-9) mol/L reduced their rate of protein synthesis by 72.4%, as determined with 14C-leucine incorporation. The immunotoxin may be useful for the in-vitro eradication of leukemic cells in autologous bone marrow transplantation to leukemia patients.
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Affiliation(s)
- J Y Chu
- Institute of Hematology, Xiehe Hospital, Tongji Medical University, Wuhan
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Qu JH, Wang N, Xu QX, Cai LW, Liang ZH. [Application of microcomputers in the analysis of nucleotide sequence. I. Seeking the site of restriction endonuclease]. Zhongguo Yi Xue Ke Xue Yuan Xue Bao 1984; 6:230-1. [PMID: 6098382] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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Chang HC, Xie YK, Wen YY, Zhang SY, Qu JH, Lu WJ. Further investigation on the hypothesis of meridian-cortex-viscera interrelationship. Am J Chin Med 1983; 11:5-13. [PMID: 6660213 DOI: 10.1142/s0192415x83000033] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
The hypothesis of Meridian-Cortex-Viscera Interrelationship maintains: 1. Meridian channel system is an independent system connected with the nerves to the cortex; 2. It acts through the nerves; 3. The nervous action is realized by humoral agents. This article gives preliminary-experimental supports for the above criteria.
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