1
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Wolf J, Franco JA, Yip R, Dabaja MZ, Velez G, Liu F, Bassuk AG, Mruthyunjaya P, Dufour A, Mahajan VB. Liquid Biopsy Proteomics in Ophthalmology. J Proteome Res 2024; 23:511-522. [PMID: 38171013 PMCID: PMC10845144 DOI: 10.1021/acs.jproteome.3c00756] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2023] [Revised: 12/08/2023] [Accepted: 12/11/2023] [Indexed: 01/05/2024]
Abstract
Minimally invasive liquid biopsies from the eye capture locally enriched fluids that contain thousands of proteins from highly specialized ocular cell types, presenting a promising alternative to solid tissue biopsies. The advantages of liquid biopsies include sampling the eye without causing irreversible functional damage, potentially better reflecting tissue heterogeneity, collecting samples in an outpatient setting, monitoring therapeutic response with sequential sampling, and even allowing examination of disease mechanisms at the cell level in living humans, an approach that we refer to as TEMPO (Tracing Expression of Multiple Protein Origins). Liquid biopsy proteomics has the potential to transform molecular diagnostics and prognostics and to assess disease mechanisms and personalized therapeutic strategies in individual patients. This review addresses opportunities, challenges, and future directions of high-resolution liquid biopsy proteomics in ophthalmology, with particular emphasis on the large-scale collection of high-quality samples, cutting edge proteomics technology, and artificial intelligence-supported data analysis.
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Affiliation(s)
- Julian Wolf
- Molecular
Surgery Laboratory, Stanford University, Palo Alto, California 94305, United States
- Department
of Ophthalmology, Byers Eye Institute, Stanford
University, Palo Alto, California 94303, United States
| | - Joel A. Franco
- Molecular
Surgery Laboratory, Stanford University, Palo Alto, California 94305, United States
- Department
of Ophthalmology, Byers Eye Institute, Stanford
University, Palo Alto, California 94303, United States
| | - Rui Yip
- Molecular
Surgery Laboratory, Stanford University, Palo Alto, California 94305, United States
- Department
of Ophthalmology, Byers Eye Institute, Stanford
University, Palo Alto, California 94303, United States
| | - Mohamed Ziad Dabaja
- Departments
of Physiology and Pharmacology & Biochemistry and Molecular Biology,
Cumming School of Medicine, University of
Calgary, Calgary, Alberta T2N 4N1, Canada
| | - Gabriel Velez
- Molecular
Surgery Laboratory, Stanford University, Palo Alto, California 94305, United States
- Department
of Ophthalmology, Byers Eye Institute, Stanford
University, Palo Alto, California 94303, United States
| | - Fei Liu
- Department
of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts 02115, United States
| | - Alexander G. Bassuk
- Department
of Pediatrics, University of Iowa, Iowa City, Iowa 52242, United States
| | - Prithvi Mruthyunjaya
- Department
of Ophthalmology, Byers Eye Institute, Stanford
University, Palo Alto, California 94303, United States
| | - Antoine Dufour
- Departments
of Physiology and Pharmacology & Biochemistry and Molecular Biology,
Cumming School of Medicine, University of
Calgary, Calgary, Alberta T2N 4N1, Canada
| | - Vinit B. Mahajan
- Molecular
Surgery Laboratory, Stanford University, Palo Alto, California 94305, United States
- Department
of Ophthalmology, Byers Eye Institute, Stanford
University, Palo Alto, California 94303, United States
- Veterans
Affairs Palo Alto Health Care System, Palo Alto, California 94304, United States
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2
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Boto de los Bueis A, de la Fuente M, Montejano-Milner R, del Hierro Zarzuelo A, Vecino E, Acera A. A Pilot Study of a Panel of Ocular Inflammation Biomarkers in Patients with Primary Sjögren’s Syndrome. Curr Issues Mol Biol 2023; 45:2881-2894. [PMID: 37185712 PMCID: PMC10136698 DOI: 10.3390/cimb45040188] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2023] [Revised: 03/27/2023] [Accepted: 03/29/2023] [Indexed: 04/05/2023] Open
Abstract
Ocular diseases have a strong impact on individuals, the effects of which extend from milder visual impairment to blindness. Due to this and to their prevalence, these conditions constitute important health, social and economic challenges. Thus, improvements in their early detection and diagnosis will help dampen the impact of these conditions, both on patients and on healthcare systems alike. In this sense, identifying tear biomarkers could establish better non-invasive approaches to diagnose these diseases and to monitor responses to therapy. With this in mind, we developed a solid phase capture assay, based on antibody microarrays, to quantify S100A6, MMP-9 and CST4 in human tear samples, and we used these arrays to study tear samples from healthy controls and patients with Sjögren’s Syndrome, at times concomitant with rheumatoid arthritis. Our results point out that the detection of S100A6 in tear samples seems to be positively correlated to rheumatoid arthritis, consistent with the systemic nature of this autoinflammatory pathology. Thus, we provide evidence that antibody microarrays may potentially help diagnose certain pathologies, possibly paving the way for significant improvements in the future care of these patients.
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Affiliation(s)
| | - Miguel de la Fuente
- Experimental Ophthalmo-Biology Group (GOBE), Department of Cell Biology and Histology, University of the Basque Country UPV/EHU, 48940 Leioa, Spain
| | - Rafael Montejano-Milner
- Ophthalmology Service, Hospital Universitario Príncipe de Asturias, 28805 Alcala de Henares, Spain
| | | | - Elena Vecino
- Experimental Ophthalmo-Biology Group (GOBE), Department of Cell Biology and Histology, University of the Basque Country UPV/EHU, 48940 Leioa, Spain
| | - Arantxa Acera
- Experimental Ophthalmo-Biology Group (GOBE), Department of Cell Biology and Histology, University of the Basque Country UPV/EHU, 48940 Leioa, Spain
- Ikerbasque, Basque Foundation for Science, 48001 Bilbao, Spain
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3
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Piedimonte P, Sola L, Chiari M, Ferrari G, Sampietro M. Peptide-Based Sensor and Microfluidic Platform for IgG Antibody Detection by Differential Impedance Sensing. Methods Mol Biol 2023; 2578:191-198. [PMID: 36152288 DOI: 10.1007/978-1-0716-2732-7_13] [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] [Indexed: 06/16/2023]
Abstract
Serological assays enable infection screening as relatively easy-to-operate approaches compared with standard methods. In addition, to be relevant for early diagnosis, specific antibody detection is important for epidemiological surveillance and quantitative detection has potential significance for evaluating the severity and prognosis of different diseases.Here, we describe the detection process based on differential impedance sensing of IgG antibodies labeled with polystyrene nanoparticles. The electrode differential configuration, the amplification with nanoparticle functionalization, the electronic reading, and the microfluidic protocol allow to reach a limit of detection below 100 pg/mL for commercial IgG antibody spiked in buffer.
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Affiliation(s)
- Paola Piedimonte
- Department of Electronics Information and Bioengineering, Politecnico di Milano, Milan, Italy.
| | - Laura Sola
- National Research Council of Italy, Istituto di Scienze e Tecnologie Chimiche (SCITEC-CNR), Milan, Italy
| | - Marcella Chiari
- National Research Council of Italy, Istituto di Scienze e Tecnologie Chimiche (SCITEC-CNR), Milan, Italy
| | - Giorgio Ferrari
- Department of Electronics Information and Bioengineering, Politecnico di Milano, Milan, Italy
| | - Marco Sampietro
- Department of Electronics Information and Bioengineering, Politecnico di Milano, Milan, Italy
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4
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Wang Q, Peng C, Shi L, Liu Z, Zhou D, Meng H, Zhao H, Li F, Zhang M. A Technical System for the Large-Scale Application of Metabolites From Paecilomyces variotii SJ1 in Agriculture. Front Bioeng Biotechnol 2021; 9:671879. [PMID: 34055763 PMCID: PMC8149806 DOI: 10.3389/fbioe.2021.671879] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2021] [Accepted: 04/08/2021] [Indexed: 01/31/2023] Open
Abstract
Compared with endophytes, metabolites from endophytes (MEs) have great potential in agriculture. However, a technique for industrializing the production of MEs is still scarce. Moreover, the establishment of effective methods for evaluating the quality of MEs is hampered by the fact that some compounds with beneficial effects on crops have not been clearly identified. Herein, a system was established for the production, quality control and application of MEs by using the extract from Paecilomyces variotii SJ1 (ZNC). First, the extraction conditions of ZNC were optimized through response surface methodology, after which each batch (500 L) met the consumption requirements of crops in 7,467 hectares. Then, chromatographic fingerprinting and enzyme-linked immunosorbent assay were applied to evaluate the similarity and specificity of unknown effective components in ZNC, ensuring a similarity of more than 90% and a quantitative accuracy of greater than 99.9% for the products from different batches. Finally, the bioactivity of industrially produced ZNC was evaluated in the field, and it significantly increased the potato yields by 4.4–10.8%. Overall, we have established a practical technical system for the large-scale application of ZNC in agriculture.
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Affiliation(s)
- Qingbin Wang
- National Engineering Laboratory for Efficient Utilization of Soil and Fertilizer Resources, College of Resources and Environment, National Engineering and Technology Research Center for Slow and Controlled Release Fertilizers, Shandong Agricultural University, Tai'an, China.,Shandong Pengbo Biotechnology Co., Ltd., Tai'an, China
| | - Chune Peng
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Tai'an, China
| | - Liran Shi
- Shandong Key Laboratory of Carbohydrate Chemistry and Glycobiology, National Glycoengineering Research Center, Shandong University, Qingdao, China
| | - Zhiguang Liu
- National Engineering Laboratory for Efficient Utilization of Soil and Fertilizer Resources, College of Resources and Environment, National Engineering and Technology Research Center for Slow and Controlled Release Fertilizers, Shandong Agricultural University, Tai'an, China
| | - Dafa Zhou
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Tai'an, China
| | - Hui Meng
- Shandong Pengbo Biotechnology Co., Ltd., Tai'an, China
| | - Hongling Zhao
- Shandong Pengbo Biotechnology Co., Ltd., Tai'an, China
| | - Fuchuan Li
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Tai'an, China
| | - Min Zhang
- National Engineering Laboratory for Efficient Utilization of Soil and Fertilizer Resources, College of Resources and Environment, National Engineering and Technology Research Center for Slow and Controlled Release Fertilizers, Shandong Agricultural University, Tai'an, China
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5
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Jing W, Wang Y, Chen C, Zhang F, Yang Y, Ma G, Yang EH, Snozek CLN, Tao N, Wang S. Gradient-Based Rapid Digital Immunoassay for High-Sensitivity Cardiac Troponin T (hs-cTnT) Detection in 1 μL Plasma. ACS Sens 2021; 6:399-407. [PMID: 32985183 DOI: 10.1021/acssensors.0c01681] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Rapid and sensitive detection of biomarkers is the key to the diagnosis of acute diseases. One example is the detection of troponin in myocardial infarction. Here, we report a gradient-based digital immunoassay method, which can achieve high-sensitivity cardiac troponin T (hs-cTnT) detection with only 1 μL of plasma sample. We designed a multizone microfluidic channel functionalized with capture antibody specific to troponin. Taking advantage of limited sample volume, a troponin concentration gradient is created along the channel because of binding induced depletion. We quantified the concentration gradient by counting the detection antibody conjugated gold nanoparticles bound to different test zones with optical imaging. Differential counting between the zones removes most common noises and nonspecific bindings. The total analytical time is about 30 min, and the limit of quantification is 6.2 ng/L. We examined 41 clinical plasma samples from 15 patients and the change in hs-cTnT concentration in serial samples showed good linear correlation with clinical results (R2 = 0.98). Therefore, this simple and sensitive gradient-based digital immunoassay method is a promising technology for clinical hs-cTnT detection and could be adapted for detection of other biomarkers.
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Affiliation(s)
- Wenwen Jing
- Center for Biosensors and Bioelectronics, The Biodesign Institute, Arizona State University, Tempe, Arizona 85287, United States
| | - Yi Wang
- Center for Biosensors and Bioelectronics, The Biodesign Institute, Arizona State University, Tempe, Arizona 85287, United States
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
| | - Chao Chen
- Center for Biosensors and Bioelectronics, The Biodesign Institute, Arizona State University, Tempe, Arizona 85287, United States
| | - Fenni Zhang
- Center for Biosensors and Bioelectronics, The Biodesign Institute, Arizona State University, Tempe, Arizona 85287, United States
| | - Yunze Yang
- Center for Biosensors and Bioelectronics, The Biodesign Institute, Arizona State University, Tempe, Arizona 85287, United States
| | - Guangzhong Ma
- Center for Biosensors and Bioelectronics, The Biodesign Institute, Arizona State University, Tempe, Arizona 85287, United States
| | - Eric H. Yang
- Department of Cardiovascular Disease, Mayo Clinic Arizona, Phoenix, Arizona 85054, United States
| | - Christine L. N. Snozek
- Department of Laboratory Medicine and Pathology, Mayo Clinic Arizona, Scottsdale, Arizona 85259, United States
| | - Nongjian Tao
- Center for Biosensors and Bioelectronics, The Biodesign Institute, Arizona State University, Tempe, Arizona 85287, United States
| | - Shaopeng Wang
- Center for Biosensors and Bioelectronics, The Biodesign Institute, Arizona State University, Tempe, Arizona 85287, United States
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6
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He Z, Huffman J, Curtin K, Garner KL, Bowdridge EC, Li X, Nurkiewicz TR, Li P. Composable Microfluidic Plates (cPlate): A Simple and Scalable Fluid Manipulation System for Multiplexed Enzyme-Linked Immunosorbent Assay (ELISA). Anal Chem 2021; 93:1489-1497. [PMID: 33326204 DOI: 10.1021/acs.analchem.0c03651] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Enzyme-linked immunosorbent assay (ELISA) is the gold standard method for protein biomarkers. However, scaling up ELISA for multiplexed biomarker analysis is not a trivial task due to the lengthy procedures for fluid manipulation and high reagent/sample consumption. Herein, we present a highly scalable multiplexed ELISA that achieves a similar level of performance to commercial single-target ELISA kits as well as shorter assay time, less consumption, and simpler procedures. This ELISA is enabled by a novel microscale fluid manipulation method, composable microfluidic plates (cPlate), which are comprised of miniaturized 96-well plates and their corresponding channel plates. By assembling and disassembling the plates, all of the fluid manipulations for 96 independent ELISA reactions can be achieved simultaneously without any external fluid manipulation equipment. Simultaneous quantification of four protein biomarkers in serum samples is demonstrated with the cPlate system, achieving high sensitivity and specificity (∼ pg/mL), short assay time (∼1 h), low consumption (∼5 μL/well), high scalability, and ease of use. This platform is further applied to probe the levels of three protein biomarkers related to vascular dysfunction under pulmonary nanoparticle exposure in rat's plasma. Because of the low cost, portability, and instrument-free nature of the cPlate system, it will have great potential for multiplexed point-of-care testing in resource-limited regions.
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Affiliation(s)
- Ziyi He
- C. Eugene Bennett Department of Chemistry, West Virginia University, Morgantown, West Virginia 26506, United States
| | - Justin Huffman
- C. Eugene Bennett Department of Chemistry, West Virginia University, Morgantown, West Virginia 26506, United States
| | - Kathrine Curtin
- Department of Mechanical and Aerospace Engineering, West Virginia University, Morgantown, West Virginia 26506, United States
| | - Krista L Garner
- Department of Physiology and Pharmacology, West Virginia University, Morgantown, West Virginia 26506, United States.,Center for Inhalation Toxicology, West Virginia University, Morgantown, West Virginia 26506, United States
| | - Elizabeth C Bowdridge
- Department of Physiology and Pharmacology, West Virginia University, Morgantown, West Virginia 26506, United States.,Center for Inhalation Toxicology, West Virginia University, Morgantown, West Virginia 26506, United States
| | - Xiaojun Li
- C. Eugene Bennett Department of Chemistry, West Virginia University, Morgantown, West Virginia 26506, United States
| | - Timothy R Nurkiewicz
- Department of Physiology and Pharmacology, West Virginia University, Morgantown, West Virginia 26506, United States.,Center for Inhalation Toxicology, West Virginia University, Morgantown, West Virginia 26506, United States
| | - Peng Li
- C. Eugene Bennett Department of Chemistry, West Virginia University, Morgantown, West Virginia 26506, United States
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7
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Ulhaq ZS, Soraya GV. Aqueous humor interleukin-6 levels in primary open-angle glaucoma (POAG): A systematic review and meta-analysis. ARCHIVOS DE LA SOCIEDAD ESPANOLA DE OFTALMOLOGIA 2020; 95:315-321. [PMID: 32414512 DOI: 10.1016/j.oftal.2020.03.018] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2020] [Accepted: 03/18/2020] [Indexed: 06/11/2023]
Abstract
OBJECTIVE To determine the change in aqueous humor interleukin-6 (IL-6) levels among primary open-angle glaucoma (GPAA) patients. METHODS Studies that investigated IL-6 level in the aqueous humor in GPAA patients using the detección methods of enzyme-linked immunosorbent assay (ELISA) y multiplex bead immunoassay were retrieved. A meta-analysis was performed a determine the overall change in IL-6 of GPAA patients compared a controls. RESULTS A total of 14 studies were selected. Analysis combining the results of studies using both detección approaches did not show any changes in the level of IL-6 in GPAA (SMD=-0,07, 95%IC -0,73 - 0,59, P=0,83), possibly due a the heterogeneity of ELISA data. Since multiplex bead immunoassay is more sensitive than convenciónal ELISA in detecting antibodies, further isolated analysis of multiplex bead immunoassay results revealed that GPAA patients had a lower level of IL-6 in the aqueous humor compared a controls (SMD=-0,40, 95%IC -0,70 - 0,09, P=0,01). Moreover, a sensitivity test also confirmed that no alteracións of results were observed in all pooled studies y pooled studies from multiplex bead immunoassay, suggesting the stabilities of our synthetic results. CONCLUSION Because of its robustness, the pooled data from multiplex bead immunoassay was used a draw a conclusion in this study, showing that the reducción of IL-6 levels in aqueous humor was observed in patients with GPAA. Further studies are still warranted a confirm our findings.
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Affiliation(s)
- Z S Ulhaq
- Department of Biomedical Science, Faculty of Medicine and Health Sciences, Maulana Malik Ibrahim Islamic State University of Malang, Batu, East Java, Indonesia.
| | - G V Soraya
- Department of Biochemistry, Faculty of Medicine, Hasanuddin University, Makassar, South Sulawesi, Indonesia
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8
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Correlation of IgG autoantibodies against acetylcholine receptors and desmogleins in patients with pemphigus treated with steroid sparing agents or rituximab. PLoS One 2020; 15:e0233957. [PMID: 32555697 PMCID: PMC7302486 DOI: 10.1371/journal.pone.0233957] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2019] [Accepted: 05/15/2020] [Indexed: 02/07/2023] Open
Abstract
Introduction Autoantibodies (autoAbs) against desmoglein-1 (DSG1) and desmoglein-3 (DSG3) have conventionally been studied and well accepted in the pathogenesis of pemphigus vulgaris (PV) and foliaceus (PF). Recent studies have suggested that non-DSG autoAbs may contribute to the pathogenesis of pemphigus, including autoAbs directed at acetylcholine receptors (AChR) and thyroid peroxidase (TPO). The purpose of this study is to retrospectively analyze PV and PF patient sera to better understand the relationship between anti-AChR and -TPO Abs to disease activity and DSG reactivity between patients treated with prednisone and steroid sparing agents (SSA; n = 22) or prednisone and rituximab (n = 21). Methods Patients were evaluated at 2 time points, T1 and T2, for disease activity using the Pemphigus Disease Area Index (PDAI), and sera were tested for the presence of TPO, DSG1, DSG3, muscarinic (M3) and nicotinic (n) AChR IgG autoAbs, as well as antibodies against Varicella Zoster Virus (VZV) by ELISA. Results Disease activity significantly decreased in patients from T1 to T2 (p < .0001). A significant difference was seen in IgG anti-DSG1 (p < .0001) and anti-DSG3 (p = .0049) levels when T1 was compared to T2 in both treatment groups. A significant increase was found between pemphigus patients and normal subjects with nAChR (p < .0001) at T1 but not with m3AChR, TPO or VZV Abs. No significant difference was seen between T1 and T2 values in patients with pemphigus for the non–desmoglein Abs TPO (p = .7559), M3AChR (p = .9003), nAChR (p = .5143) or VZV (p = .2454). These findings demonstrate that although an increase in IgG anti-nAChR autoAbs was found in PV and PF subjects, these Abs did not decrease with treatment. No other non-DSG Abs were increased or significantly changed over time in patients with pemphigus. This suggests that anti -AChR and -TPO Abs may not play a direct role in the pathogenesis of most patients with pemphigus, but does not rule out a role for non-DSG auto antibodies in distinct subsets of pemphigus patient.
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9
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Wang Y, Yang Y, Chen C, Wang S, Wang H, Jing W, Tao N. One-Step Digital Immunoassay for Rapid and Sensitive Detection of Cardiac Troponin I. ACS Sens 2020; 5:1126-1131. [PMID: 32180397 DOI: 10.1021/acssensors.0c00064] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A rapid and sensitive method to detect cardiac troponin I (cTnI) in human blood is critical to the diagnosis and treatment of acute myocardial infarction (AMI). Here, we describe a simple one-step digital immunoassay for single-molecule detection without washing steps. A sample containing cTnI mixed with detection antibody-conjugated gold nanoparticles (AuNPs) is added to a capture antibody-coated sensor surface and the formation of the antibody-cTnI-antibody sandwich is detected by digitally counting the binding of the individual gold nanoparticles to the sensor surface in real time using a bright-field optical imaging setup together with a differential imaging algorithm. The digital immunoassay detects cTnI in undiluted human plasma, which achieves a detection limit of 5.7 ng/L within a detection time of only 10 min, which meets the requirement of current clinical high-sensitivity troponin assay (∼70 ng/L cutoff). We anticipate that the one-step and real-time digital immunoassay can be applied to the detection of other disease biomarkers in blood.
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Affiliation(s)
- Yi Wang
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Yunze Yang
- Biodesign Center for Bioelectronics and Biosensors, and School of Electrical, Energy and Computer Engineering, Arizona State University, Tempe, Arizona 85287, United States
| | - Chao Chen
- Biodesign Center for Bioelectronics and Biosensors, and School of Electrical, Energy and Computer Engineering, Arizona State University, Tempe, Arizona 85287, United States
| | - Shaopeng Wang
- Biodesign Center for Bioelectronics and Biosensors, and School of Electrical, Energy and Computer Engineering, Arizona State University, Tempe, Arizona 85287, United States
| | - Hui Wang
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Wenwen Jing
- Biodesign Center for Bioelectronics and Biosensors, and School of Electrical, Energy and Computer Engineering, Arizona State University, Tempe, Arizona 85287, United States
| | - Nongjian Tao
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
- Biodesign Center for Bioelectronics and Biosensors, and School of Electrical, Energy and Computer Engineering, Arizona State University, Tempe, Arizona 85287, United States
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10
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Jing W, Wang Y, Yang Y, Wang Y, Ma G, Wang S, Tao N. Time-Resolved Digital Immunoassay for Rapid and Sensitive Quantitation of Procalcitonin with Plasmonic Imaging. ACS NANO 2019; 13:8609-8617. [PMID: 31276361 PMCID: PMC7008466 DOI: 10.1021/acsnano.9b02771] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Timely diagnosis of acute diseases improves treatment outcomes and saves lives, but it requires fast and precision quantification of biomarkers. Here, we report a time-resolved digital immunoassay based on plasmonic imaging of binding of single nanoparticles to biomarkers captured on a sensor surface. The real-time and high contrast of plasmonic imaging lead to fast and precise counting of the individual biomarkers over a wide dynamic range. We demonstrated the detection principle, evaluated the performance of the method using procalcitonin (PCT) as an example, and achieved a limit of detection of ∼2.8 pg/mL, dynamic range of 4.2-12500 pg/mL, for a total detection time of ∼25 min.
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Affiliation(s)
- Wenwen Jing
- Biodesign Center for Biosensors and Bioelectronics, Arizona State University, Tempe, Arizona 85287, USA
| | - Yan Wang
- Biodesign Center for Biosensors and Bioelectronics, Arizona State University, Tempe, Arizona 85287, USA
| | - Yunze Yang
- Biodesign Center for Biosensors and Bioelectronics, Arizona State University, Tempe, Arizona 85287, USA
| | - Yi Wang
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
| | - Guangzhong Ma
- Biodesign Center for Biosensors and Bioelectronics, Arizona State University, Tempe, Arizona 85287, USA
| | - Shaopeng Wang
- Biodesign Center for Biosensors and Bioelectronics, Arizona State University, Tempe, Arizona 85287, USA
| | - Nongjian Tao
- Biodesign Center for Biosensors and Bioelectronics, Arizona State University, Tempe, Arizona 85287, USA
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
- School of Electrical, Computer and Energy Engineering, Arizona State University, Tempe, Arizona 85287, USA
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11
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Zietek BM, Still KBM, Jaschusch K, Bruyneel B, Ariese F, Brouwer TJF, Luger M, Limburg RJ, Rosier JC, V Iperen DJ, Casewell NR, Somsen GW, Kool J. Bioactivity Profiling of Small-Volume Samples by Nano Liquid Chromatography Coupled to Microarray Bioassaying Using High-Resolution Fractionation. Anal Chem 2019; 91:10458-10466. [PMID: 31373797 PMCID: PMC6706796 DOI: 10.1021/acs.analchem.9b01261] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
![]()
High-throughput
screening platforms for the identification of bioactive
compounds in mixtures have become important tools in the drug discovery
process. Miniaturization of such screening systems may overcome problems
associated with small sample volumes and enhance throughput and sensitivity.
Here we present a new screening platform, coined picofractionation
analytics, which encompasses microarray bioassays and mass spectrometry
(MS) of components from minute amounts of samples after their nano
liquid chromatographic (nanoLC) separation. Herein, nanoLC was coupled
to a low-volume liquid dispenser equipped with pressure-fed solenoid
valves, enabling 50-nL volumes of column effluent (300 nL/min) to
be discretely deposited on a glass slide. The resulting fractions
were dried and subsequently bioassayed by sequential printing of nL-volumes
of reagents on top of the spots. Unwanted evaporation of bioassay
liquids was circumvented by employing mineral oil droplets. A fluorescence
microscope was used for assay readout in kinetic mode. Bioassay data
were correlated to MS data obtained using the same nanoLC conditions
in order to assign bioactives. The platform provides the possibility
of freely choosing a wide diversity of bioassay formats, including
those requiring long incubation times. The new method was compared
to a standard bioassay approach, and its applicability was demonstrated
by screening plasmin inhibitors and fibrinolytic bioactives from mixtures
of standards and snake venoms, revealing active peptides and coagulopathic
proteases.
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Affiliation(s)
- Barbara M Zietek
- Division of BioAnalytical Chemistry, Amsterdam Institute of Molecules, Medicines and Systems , Vrije Universiteit Amsterdam , Amsterdam 1081 HZ , The Netherlands
| | - Kristina B M Still
- Division of BioAnalytical Chemistry, Amsterdam Institute of Molecules, Medicines and Systems , Vrije Universiteit Amsterdam , Amsterdam 1081 HZ , The Netherlands
| | - Kevin Jaschusch
- Division of BioAnalytical Chemistry, Amsterdam Institute of Molecules, Medicines and Systems , Vrije Universiteit Amsterdam , Amsterdam 1081 HZ , The Netherlands
| | - Ben Bruyneel
- Division of BioAnalytical Chemistry, Amsterdam Institute of Molecules, Medicines and Systems , Vrije Universiteit Amsterdam , Amsterdam 1081 HZ , The Netherlands
| | - Freek Ariese
- LaserLaB , Vrije Universiteit Amsterdam , Amsterdam 1081 HZ , The Netherlands
| | - Tinco J F Brouwer
- Electronic Engineering , Vrije Universiteit Amsterdam , Amsterdam 1081 HZ , The Netherlands
| | - Matthijs Luger
- Electronic Engineering , Vrije Universiteit Amsterdam , Amsterdam 1081 HZ , The Netherlands
| | - Rob J Limburg
- Electronic Engineering , Vrije Universiteit Amsterdam , Amsterdam 1081 HZ , The Netherlands
| | - Joost C Rosier
- Fine Mechanics and Engineering Beta-VU , Vrije Universiteit Amsterdam , Amsterdam 1081 HZ , The Netherlands
| | - Dick J V Iperen
- Fine Mechanics and Engineering Beta-VU , Vrije Universiteit Amsterdam , Amsterdam 1081 HZ , The Netherlands
| | - Nicholas R Casewell
- Centre for Snakebite Research & Interventions , Liverpool School of Tropical Medicine , Pembroke Place , Liverpool L3 5QA , U.K.,Centre for Drugs and Diagnostics , Liverpool School of Tropical Medicine , Pembroke Place , Liverpool L3 5QA , U.K
| | - Govert W Somsen
- Division of BioAnalytical Chemistry, Amsterdam Institute of Molecules, Medicines and Systems , Vrije Universiteit Amsterdam , Amsterdam 1081 HZ , The Netherlands
| | - Jeroen Kool
- Division of BioAnalytical Chemistry, Amsterdam Institute of Molecules, Medicines and Systems , Vrije Universiteit Amsterdam , Amsterdam 1081 HZ , The Netherlands
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12
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Sanchis A, Salvador JP, Marco MP. Multiplexed immunochemical techniques for the detection of pollutants in aquatic environments. Trends Analyt Chem 2018. [DOI: 10.1016/j.trac.2018.06.015] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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13
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Gehring AG, Brewster JD, He Y, Irwin PL, Paoli GC, Simons T, Tu SI, Uknalis J. Antibody Microarray for E. coli O157:H7 and Shiga Toxin in Microtiter Plates. SENSORS 2015; 15:30429-42. [PMID: 26690151 PMCID: PMC4721727 DOI: 10.3390/s151229807] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/04/2015] [Revised: 11/20/2015] [Accepted: 11/26/2015] [Indexed: 12/18/2022]
Abstract
Antibody microarray is a powerful analytical technique because of its inherent ability to simultaneously discriminate and measure numerous analytes, therefore making the technique conducive to both the multiplexed detection and identification of bacterial analytes (i.e., whole cells, as well as associated metabolites and/or toxins). We developed a sandwich fluorescent immunoassay combined with a high-throughput, multiwell plate microarray detection format. Inexpensive polystyrene plates were employed containing passively adsorbed, array-printed capture antibodies. During sample reaction, centrifugation was the only strategy found to significantly improve capture, and hence detection, of bacteria (pathogenic Escherichia coli O157:H7) to planar capture surfaces containing printed antibodies. Whereas several other sample incubation techniques (e.g., static vs. agitation) had minimal effect. Immobilized bacteria were labeled with a red-orange-fluorescent dye (Alexa Fluor 555) conjugated antibody to allow for quantitative detection of the captured bacteria with a laser scanner. Shiga toxin 1 (Stx1) could be simultaneously detected along with the cells, but none of the agitation techniques employed during incubation improved detection of the relatively small biomolecule. Under optimal conditions, the assay had demonstrated limits of detection of ~5.8 × 105 cells/mL and 110 ng/mL for E. coli O157:H7 and Stx1, respectively, in a ~75 min total assay time.
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Affiliation(s)
- Andrew G Gehring
- Molecular Characterization of Foodborne Pathogens Research Unit, United States Department of Agriculture-Northeast Area, Agricultural Research Service, Eastern Regional Research Center, Wyndmoor, PA 19038, USA.
| | - Jeffrey D Brewster
- Molecular Characterization of Foodborne Pathogens Research Unit, United States Department of Agriculture-Northeast Area, Agricultural Research Service, Eastern Regional Research Center, Wyndmoor, PA 19038, USA.
| | - Yiping He
- Molecular Characterization of Foodborne Pathogens Research Unit, United States Department of Agriculture-Northeast Area, Agricultural Research Service, Eastern Regional Research Center, Wyndmoor, PA 19038, USA.
| | - Peter L Irwin
- Molecular Characterization of Foodborne Pathogens Research Unit, United States Department of Agriculture-Northeast Area, Agricultural Research Service, Eastern Regional Research Center, Wyndmoor, PA 19038, USA.
| | - George C Paoli
- Molecular Characterization of Foodborne Pathogens Research Unit, United States Department of Agriculture-Northeast Area, Agricultural Research Service, Eastern Regional Research Center, Wyndmoor, PA 19038, USA.
| | - Tawana Simons
- Molecular Characterization of Foodborne Pathogens Research Unit, United States Department of Agriculture-Northeast Area, Agricultural Research Service, Eastern Regional Research Center, Wyndmoor, PA 19038, USA.
| | - Shu-I Tu
- Molecular Characterization of Foodborne Pathogens Research Unit, United States Department of Agriculture-Northeast Area, Agricultural Research Service, Eastern Regional Research Center, Wyndmoor, PA 19038, USA.
| | - Joseph Uknalis
- Molecular Characterization of Foodborne Pathogens Research Unit, United States Department of Agriculture-Northeast Area, Agricultural Research Service, Eastern Regional Research Center, Wyndmoor, PA 19038, USA.
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14
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Abstract
The enzyme-linked immunosorbent assay (ELISA) is a simple and rapid technique for detecting and quantitating antibodies or antigens attached to a solid surface. Being one of the most sensitive immunoassays, ELISA offers commercial value in laboratory research, diagnostic of disease biomarkers, and quality control in various industries. This technique utilizes an enzyme-linked antibody binding to a surface-attached antigen. Subsequently, a substrate is added to produce either a color change or light signal correlating to the amount of the antigen present in the original sample. This chapter provides the procedures required for carrying out indirect ELISA, one of the many forms of ELISA, to detect polystyrene-immobilized antigen. Methodological approaches to optimize this assay technique are also described, a prerequisite for automation and multiplexing.
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15
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Protein Microarrays with Novel Microfluidic Methods: Current Advances. MICROARRAYS 2014; 3:180-202. [PMID: 27600343 PMCID: PMC4996363 DOI: 10.3390/microarrays3030180] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/30/2014] [Revised: 06/10/2014] [Accepted: 06/16/2014] [Indexed: 01/08/2023]
Abstract
Microfluidic-based micromosaic technology has allowed the pattering of recognition elements in restricted micrometer scale areas with high precision. This controlled patterning enabled the development of highly multiplexed arrays multiple analyte detection. This arraying technology was first introduced in the beginning of 2001 and holds tremendous potential to revolutionize microarray development and analyte detection. Later, several microfluidic methods were developed for microarray application. In this review we discuss these novel methods and approaches which leverage the property of microfluidic technologies to significantly improve various physical aspects of microarray technology, such as enhanced imprinting homogeneity, stability of the immobilized biomolecules, decreasing assay times, and reduction of the costs and of the bulky instrumentation.
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A high-throughput, precipitating colorimetric sandwich ELISA microarray for Shiga toxins. Toxins (Basel) 2014; 6:1855-72. [PMID: 24921195 PMCID: PMC4073133 DOI: 10.3390/toxins6061855] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2014] [Revised: 05/30/2014] [Accepted: 06/03/2014] [Indexed: 11/16/2022] Open
Abstract
Shiga toxins 1 and 2 (Stx1 and Stx2) from Shiga toxin-producing E. coli (STEC) bacteria were simultaneously detected with a newly developed, high-throughput antibody microarray platform. The proteinaceous toxins were immobilized and sandwiched between biorecognition elements (monoclonal antibodies) and pooled horseradish peroxidase (HRP)-conjugated monoclonal antibodies. Following the reaction of HRP with the precipitating chromogenic substrate (metal enhanced 3,3-diaminobenzidine tetrahydrochloride or DAB), the formation of a colored product was quantitatively measured with an inexpensive flatbed page scanner. The colorimetric ELISA microarray was demonstrated to detect Stx1 and Stx2 at levels as low as ~4.5 ng/mL within ~2 h of total assay time with a narrow linear dynamic range of ~1-2 orders of magnitude and saturation levels well above background. Stx1 and/or Stx2 produced by various strains of STEC were also detected following the treatment of cultured cells with mitomycin C (a toxin-inducing antibiotic) and/or B-PER (a cell-disrupting, protein extraction reagent). Semi-quantitative detection of Shiga toxins was demonstrated to be sporadic among various STEC strains following incubation with mitomycin C; however, further reaction with B-PER generally resulted in the detection of or increased detection of Stx1, relative to Stx2, produced by STECs inoculated into either axenic broth culture or culture broth containing ground beef.
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