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Pluim D, Buitelaar P, de Jong KAM, Rosing H, Brandsma D, Huitema ADR, Beijnen JH. ELISA assay for the quantification of ipilimumab in human serum, plasma, milk, and cerebrospinal fluid. J Pharm Biomed Anal 2024; 245:116140. [PMID: 38701533 DOI: 10.1016/j.jpba.2024.116140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2024] [Revised: 04/02/2024] [Accepted: 04/06/2024] [Indexed: 05/05/2024]
Abstract
Ipilimumab is an immune checkpoint inhibitor of the cytotoxic T-lymphocyte-associated protein 4 (CTLA-4). Ipilimumab has become part of the standard of care for different types of cancer. The efficacy of these treatments is limited due to immune-related toxicity and high economic costs. Dose rationalization studies based on pharmacokinetic data may help to address these limitations. For this purpose, more sensitive analytical methods are needed. We report the development and validation of the first enzyme-linked immunosorbent assay (ELISA) for sensitive determination of ipilimumab concentrations in human serum, plasma, cerebrospinal fluid (CSF), and milk. Our assay is based on the specific capture of ipilimumab by immobilized CTLA-4. The lower limit of quantifications of ipilimumab in serum, plasma, and milk are 50 ng/mL and 10 ng/mL in CSF. The ELISA method showed long-term storage stability for at least one year at -80°C and was successfully cross-validated with ultraperformance liquid chromatography coupled with tandem mass spectrometry. The ELISA method is reliable, relatively inexpensive, and can be used in serum, plasma, CSF, and milk from patients treated with ipilimumab, as evidenced by the analysis of real clinical samples.
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Affiliation(s)
- Dick Pluim
- Division of Pharmacology, Netherlands Cancer Institute, Amsterdam, The Netherlands.
| | - Pauline Buitelaar
- Division of Pharmacology, Netherlands Cancer Institute, Amsterdam, The Netherlands; Department of Pharmacy & Pharmacology, Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - Karen A M de Jong
- Division of Pharmacology, Netherlands Cancer Institute, Amsterdam, The Netherlands; Department of Pharmacy & Pharmacology, Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - Hilde Rosing
- Department of Pharmacy & Pharmacology, Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - Dieta Brandsma
- Department of Neuro-oncology, Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - Alwin D R Huitema
- Division of Pharmacology, Netherlands Cancer Institute, Amsterdam, The Netherlands; Department of Pharmacy & Pharmacology, Netherlands Cancer Institute, Amsterdam, The Netherlands; Department of Pharmacology, Princess Máxima Center for Pediatric Oncology, Utrecht, The Netherlands; Department of Clinical Pharmacy, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
| | - Jos H Beijnen
- Division of Pharmacology, Netherlands Cancer Institute, Amsterdam, The Netherlands; Department of Pharmacy & Pharmacology, Netherlands Cancer Institute, Amsterdam, The Netherlands; Utrecht Institute of Pharmaceutical Sciences (UIPS), Utrecht University, Utrecht, The Netherlands
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Chao M, Xu X, Wu A, Zhou W, Xu C, Liu L, Guo L. Monoclonal antibody production and development of immunochromatographic strip assays for screening of the herbicide bispyribac-sodium in rice. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2023; 15:4304-4310. [PMID: 37605639 DOI: 10.1039/d3ay00915g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/23/2023]
Abstract
Bispyribac-sodium (BIS) is a new broad-spectrum and efficient herbicide, which is widely used for the control of weeds in rice. To protect the human body from the threat of BIS exposure, it is essential to establish a sensitive and simple detection method. In this work, a high-affinity monoclonal antibody against BIS was produced for the first time, and a colloidal gold immunochromatographic strip assay (ICSA) was developed to screen for BIS in rice samples. The visual limit of detection and the calculated limit of detection of the ICSA were 0.2 μg kg-1 and 0.018 μg kg-1, respectively, which could be accurately obtained within 8 min. The average recoveries of BIS ranged from 90.0% to 109.0% in tests, with CVs ranging from 4.0% to 8.9% for rice samples. Therefore, our ICSA would be a good option for the sensitive and rapid detection of BIS in rice samples.
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Affiliation(s)
- Mengjia Chao
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu, China.
- International Joint Research Laboratory for Biointerface and Biodetection, School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, 214122, China
| | - Xinxin Xu
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu, China.
- International Joint Research Laboratory for Biointerface and Biodetection, School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, 214122, China
| | - Aihong Wu
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu, China.
- International Joint Research Laboratory for Biointerface and Biodetection, School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, 214122, China
| | - Wei Zhou
- Jiangsu Product Quality Testing and Inspection Institute, Nanjing, Jiangsu, 210000, China
| | - Chuanlai Xu
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu, China.
- International Joint Research Laboratory for Biointerface and Biodetection, School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, 214122, China
| | - Liqiang Liu
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu, China.
- International Joint Research Laboratory for Biointerface and Biodetection, School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, 214122, China
| | - Lingling Guo
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu, China.
- International Joint Research Laboratory for Biointerface and Biodetection, School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, 214122, China
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Bogdanowicz N, Lusina A, Nazim T, Cegłowski M. Rapid quantification of 2,4-dichlorophenol in river water samples using molecularly imprinted polymers coupled to ambient plasma mass spectrometry. JOURNAL OF HAZARDOUS MATERIALS 2023; 450:131068. [PMID: 36857825 DOI: 10.1016/j.jhazmat.2023.131068] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Revised: 02/12/2023] [Accepted: 02/21/2023] [Indexed: 06/18/2023]
Abstract
Rapid quantification of environmental pollutants is important for water quality control and environmental monitoring. In this work, we report the development of molecularly imprinted polymers (MIPs) obtained from poly(methyl vinyl ether-alt-maleic acid) polymer. The synthesized materials were used for selective preconcentration of 2,4-dichlorophenol, a priority pollutant which creates a threat to public health. The structure of poly(methyl vinyl ether-alt-maleic acid) was functionalized with 4-aminomethylpyridine (4-AMP) to incorporate pyridine groups presumably responsible for increased affinity towards 2,4-dichlorophenol. The synthesis was performed with different degree (10%, 20% and 30%) of 4-AMP functionalization to investigate the influence of pyridine group content on the final MIPs properties. The molecular imprinting process was conducted by amidation of polymers' anhydride groups with diethylenetriamine. Moreover, the experimental data indicated that maximum adsorption capacity was observed for the highest 4-AMP functionalization degree. Similarly, MIPs with the highest 4-AMP content proved to possess the highest selectivity towards the analyte. Finally, the functionalized MIPs were used to quantify 2,4-dichlorophenol by their direct introduction into a specially designed ambient mass spectrometry setup. The detection limits were improved significantly over the ones measured for pure analyte solution. The proposed analytical technique was used to quantify 2,4-dichlorophenol in river water and wastewater samples. Good recovery results were obtained, which proves that the method can be used for analysis of complex real-life samples.
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Affiliation(s)
- Natalia Bogdanowicz
- Faculty of Chemistry, Adam Mickiewicz University, Uniwersytetu Poznańskiego 8, Poznań 61-614, Poland
| | - Aleksandra Lusina
- Faculty of Chemistry, Adam Mickiewicz University, Uniwersytetu Poznańskiego 8, Poznań 61-614, Poland
| | - Tomasz Nazim
- Faculty of Chemistry, Adam Mickiewicz University, Uniwersytetu Poznańskiego 8, Poznań 61-614, Poland
| | - Michał Cegłowski
- Faculty of Chemistry, Adam Mickiewicz University, Uniwersytetu Poznańskiego 8, Poznań 61-614, Poland.
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Xu X, Guo L, Wu A, Liu L, Kuang H, Xu L, Xu C. Rapid and sensitive detection of flubendiamide in grapes and tomatoes using a colloidal gold immunochromatography assay. Food Addit Contam Part A Chem Anal Control Expo Risk Assess 2022; 39:1843-1854. [DOI: 10.1080/19440049.2022.2120635] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
Affiliation(s)
- Xinxin Xu
- International Joint Research Laboratory for Biointerface and Biodetection, School of Food Science and Technology, Jiangnan University, Wuxi, China
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, China
| | - Lingling Guo
- International Joint Research Laboratory for Biointerface and Biodetection, School of Food Science and Technology, Jiangnan University, Wuxi, China
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, China
| | - Aihong Wu
- International Joint Research Laboratory for Biointerface and Biodetection, School of Food Science and Technology, Jiangnan University, Wuxi, China
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, China
| | - Liqiang Liu
- International Joint Research Laboratory for Biointerface and Biodetection, School of Food Science and Technology, Jiangnan University, Wuxi, China
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, China
| | - Hua Kuang
- International Joint Research Laboratory for Biointerface and Biodetection, School of Food Science and Technology, Jiangnan University, Wuxi, China
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, China
| | - Liguang Xu
- International Joint Research Laboratory for Biointerface and Biodetection, School of Food Science and Technology, Jiangnan University, Wuxi, China
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, China
| | - Chuanlai Xu
- International Joint Research Laboratory for Biointerface and Biodetection, School of Food Science and Technology, Jiangnan University, Wuxi, China
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, China
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Chao M, Xu X, Wu A, Song S, Kuang H, Xu C, Liu L. Gold immunochromatographic strip assay for the detection of triamcinolone acetonide and budesonide in milk. Food Addit Contam Part A Chem Anal Control Expo Risk Assess 2022; 39:1531-1543. [PMID: 35867536 DOI: 10.1080/19440049.2022.2099984] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
A monoclonal antibody against triamcinolone acetonide (TCA) and budesonide (BUD) was prepared using a hapten that was generated by introducing a carboxyl group into the structure of TCA. Based on the prepared monoclonal antibody, a gold nanoparticle-based lateral-flow immunoassay (GLFA) was developed with the ability to screen TCA and BUD in milk. The visible limits of detection of the GLFA for the analysis of TCA and BUD were 0.1 and 0.5 ng/mL with a cutoff value of 5 and 10 ng/mL, respectively, in milk. Average recoveries of TCA and BUD in milk were 92.0-102.2% and 96.0-98.8% with a good correlation between the results from the GLFA and LC-MS/MS analysis. These results demonstrated that the GLFA method for the rapid detection of TCA and BUD in milk samples is reliable and sensitive.
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Affiliation(s)
- Mengjia Chao
- State Key Lab of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, People's Republic of China
| | - Xinxin Xu
- State Key Lab of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, People's Republic of China
| | - Aihong Wu
- State Key Lab of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, People's Republic of China
| | - Shanshan Song
- State Key Lab of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, People's Republic of China
| | - Hua Kuang
- State Key Lab of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, People's Republic of China
| | - Chuanlai Xu
- State Key Lab of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, People's Republic of China
| | - Liqiang Liu
- State Key Lab of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, People's Republic of China
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