1
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Kumar S, Senapati S, Chang HC. Extracellular vesicle and lipoprotein diagnostics (ExoLP-Dx) with membrane sensor: A robust microfluidic platform to overcome heterogeneity. BIOMICROFLUIDICS 2024; 18:041301. [PMID: 39056024 PMCID: PMC11272220 DOI: 10.1063/5.0218986] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/14/2024] [Accepted: 07/04/2024] [Indexed: 07/28/2024]
Abstract
The physiological origins and functions of extracellular vesicles (EVs) and lipoproteins (LPs) propel advancements in precision medicine by offering non-invasive diagnostic and therapeutic prospects for cancers, cardiovascular, and neurodegenerative diseases. However, EV/LP diagnostics (ExoLP-Dx) face considerable challenges. Their intrinsic heterogeneity, spanning biogenesis pathways, surface protein composition, and concentration metrics complicate traditional diagnostic approaches. Commonly used methods such as nanoparticle tracking analysis, enzyme-linked immunosorbent assay, and nuclear magnetic resonance do not provide any information about their proteomic subfractions, including active proteins/enzymes involved in essential pathways/functions. Size constraints limit the efficacy of flow cytometry for small EVs and LPs, while ultracentrifugation isolation is hampered by co-elution with non-target entities. In this perspective, we propose a charge-based electrokinetic membrane sensor, with silica nanoparticle reporters providing salient features, that can overcome the interference, long incubation time, sensitivity, and normalization issues of ExoLP-Dx from raw plasma without needing sample pretreatment/isolation. A universal EV/LP standard curve is obtained despite their heterogeneities.
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Affiliation(s)
- Sonu Kumar
- Department of Chemical and Biomolecular Engineering, University of Notre Dame, Notre Dame, Indiana 46556, USA
| | - Satyajyoti Senapati
- Department of Chemical and Biomolecular Engineering, University of Notre Dame, Notre Dame, Indiana 46556, USA
| | - Hsueh-Chia Chang
- Department of Chemical and Biomolecular Engineering, University of Notre Dame, Notre Dame, Indiana 46556, USA
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2
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Pant A, Kaur T, Sharma T, Singh J, Suttee A, Barnwal RP, Kaur IP, Singh G, Singh B. A glass matrices-assisted quantum dots-based biosensor for selective capturing and detection of Escherichia coli. JOURNAL OF WATER AND HEALTH 2022; 20:1673-1687. [PMID: 36573672 DOI: 10.2166/wh.2022.293] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Bacterial contamination of water and food is a grave health concern rendering humans quite vulnerable to disease(s), and proving, at times, fatal too. Exploration of the novel diagnostic tools is, accordingly, highly called for to ensure rapid detection of the pathogenic bacteria, particularly Escherichia coli. The current manuscript, accordingly, reports the use of silane-functionalized glass matrices and antibody-conjugated cadmium telluride (CdTe) quantum dots (QDs) for efficient detection of E. coli. Synthesis of QDs (size: 5.4-6.8 nm) using mercaptopropionic acid (MPA) stabilizer yielded stable photoluminescence (∼62%), corroborating superior fluorescent characteristics. A test sample, when added to antibody-conjugated matrices, followed by antibody-conjugated CdTe-MPA QDs, formed a pathogen-antibody QDs complex. The latter, during confocal microscopy, demonstrated rapid detection of the selectively captured pathogenic bacteria (10 microorganism cells/10 μL) with enhanced sensitivity and specificity. The work, overall, encompasses establishment and design of an innovative detection platform in microbial diagnostics for rapid capturing of pathogens in water and food samples.
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Affiliation(s)
- Anjali Pant
- University Institute of Pharmaceutical Sciences, Panjab University, Chandigarh, India 160014
| | - Taranvir Kaur
- University Institute of Pharmaceutical Sciences, Panjab University, Chandigarh, India 160014
| | - Teenu Sharma
- Chitkara College of Pharmacy, Chitkara University, Rajpura, Punjab, India 140401
| | - Joga Singh
- University Institute of Pharmaceutical Sciences, Panjab University, Chandigarh, India 160014
| | - Ashish Suttee
- Department of Pharmacognosy, School of Pharmaceutical Sciences, Lovely Professional University, Jalandhar, Punjab, India
| | | | - Indu Pal Kaur
- University Institute of Pharmaceutical Sciences, Panjab University, Chandigarh, India 160014
| | - Gurpal Singh
- University Institute of Pharmaceutical Sciences, Panjab University, Chandigarh, India 160014
| | - Bhupinder Singh
- University Institute of Pharmaceutical Sciences, Panjab University, Chandigarh, India 160014 ; Chitkara College of Pharmacy, Chitkara University, Rajpura, Punjab, India 140401
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3
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Kim JK, Yun H, Yeom CH, Kim EJ, Kim W, Lee CS, Kim BG, Jeong HJ. Flow cytometry-based rapid detection of Staphylococcus aureus and Pseudomonas aeruginosa using fluorescent antibodies. RSC Adv 2022; 12:34660-34669. [PMID: 36545616 PMCID: PMC9717348 DOI: 10.1039/d2ra05694a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Accepted: 11/26/2022] [Indexed: 12/04/2022] Open
Abstract
Staphylococcus aureus (S. aureus) and Pseudomonas aeruginosa (P. aeruginosa) are major pathogens frequently detected in food and beverage poisoning, and persistent infections. Therefore, the development of a rapid method that can detect these pathogens before serious multiplication is required. In this study, we established a flow cytometry (FCM)-based detection method that allows rapid acquisition of cell populations in fluid samples by using a fluorescent antibody against S. aureus or P. aeruginosa. Using this method, we detected these pathogens with a 103 to 105 CFU order of limit of detection value within 1 hour. The FCM-based method for the detection of S. aureus and P. aeruginosa offers the possibility of high-throughput analysis of pathogens in food, environmental, and clinical sources.
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Affiliation(s)
- Joo-Kyung Kim
- Interdisciplinary Program for Biochemical Engineering and Biotechnology, Seoul National UniversitySeoul08826South Korea
| | - Hanool Yun
- Department of Biological and Chemical Engineering, Hongik UniversitySejong30016South Korea
| | - Chang-Hun Yeom
- Department of Biological and Chemical Engineering, Hongik UniversitySejong30016South Korea
| | - Eun-Jung Kim
- Bio-MAX/N-Bio, Seoul National UniversitySeoul08826South Korea
| | - Wooseong Kim
- College of Pharmacy and Graduate School of Pharmaceutical Sciences, Ewha Womans UniversitySeoul 03760South Korea
| | - Chang-Soo Lee
- Department of Chemical Engineering and Applied Chemistry, Chungnam National UniversityDaejeon 34134South Korea
| | - Byung-Gee Kim
- Interdisciplinary Program for Biochemical Engineering and Biotechnology, Seoul National UniversitySeoul08826South Korea,Bio-MAX/N-Bio, Seoul National UniversitySeoul08826South Korea
| | - Hee-Jin Jeong
- Department of Biological and Chemical Engineering, Hongik UniversitySejong30016South Korea
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4
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Pandit C, Alajangi HK, Singh J, Khajuria A, Sharma A, Hassan MS, Parida M, Semwal AD, Gopalan N, Sharma RK, Suttee A, Soni U, Singh B, Sapra S, Barnwal RP, Singh G, Kaur IP. Development of magnetic nanoparticle assisted aptamer-quantum dot based biosensor for the detection of Escherichia coli in water samples. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 831:154857. [PMID: 35351510 DOI: 10.1016/j.scitotenv.2022.154857] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/24/2021] [Revised: 03/14/2022] [Accepted: 03/23/2022] [Indexed: 06/14/2023]
Abstract
The contamination of food and potable water with microorganisms may cause food-borne and water-borne diseases. The common contaminants include Escherichia coli (E. coli), Salmonella sp. etc. The conventional methods for monitoring the water quality for the presence of bacterial contaminants are time-consuming, expensive, and not suitable for rapid on-spot detection in field conditions. In the current study, super paramagnetic iron oxide nanoparticles (SPIONs) were synthesized and conjugated with E. coli specific Aptamer I to detect E. coli cells qualitatively as well as quantitatively. The sludge consisting of E. coli- SPION complex was separated via magnetic separation. The presence of E. coli cells was confirmed with the help of standard techniques and confocal laser scanning microscopy (CLSM) employing Aptamer II conjugated CdTe-MPA quantum dots (QDs). Finally, an ATmega 328P prototype biosensor based on Aptamer II conjugated CdTe MPA QDs exhibited quantitative and qualitative abilities to detect E.coli. This prototype biosensor can even detect low bacterial counts (up to 1 × 102 cfu) with the help of a photodiode and plano-convex lens. Further, the prototype biosensor made up of ultraviolet light-emitting diode (UV LED), liquid crystal display (LCD) and ATmega328Pmicrocontroller offers on-spot detection of E.coli in water samples with high resolution and sensitivity. Similarly, this in-house developed prototype biosensor can also be utilized to detect bacterial contamination in food samples.
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Affiliation(s)
- Chitvan Pandit
- University Institute of Pharmaceutical Sciences, Panjab University, Chandigarh, India
| | - Hema Kumari Alajangi
- University Institute of Pharmaceutical Sciences, Panjab University, Chandigarh, India; Department of Biophysics, Panjab University, Chandigarh, India
| | - Joga Singh
- University Institute of Pharmaceutical Sciences, Panjab University, Chandigarh, India
| | - Akhil Khajuria
- University Institute of Pharmaceutical Sciences, Panjab University, Chandigarh, India
| | - Akanksha Sharma
- University Institute of Pharmaceutical Sciences, Panjab University, Chandigarh, India; Department of Biophysics, Panjab University, Chandigarh, India
| | - Md Samim Hassan
- Department of Chemistry, Indian Institute of Technology Delhi, New Delhi, India
| | | | | | - Natarajan Gopalan
- Department of Epidemiology and Public Health, School of Life Sciences, Central University of Tamil Nadu, India
| | | | - Ashish Suttee
- Department of Pharmacognosy, School of Pharmaceutical Sciences, Lovely Professional University, Phagwara, Punjab, India
| | - Udit Soni
- Department Department of Biotechnology, TERI School of Advanced Studies New Delhi, India
| | - Bhupinder Singh
- University Institute of Pharmaceutical Sciences, Panjab University, Chandigarh, India
| | - Sameer Sapra
- Department of Chemistry, Indian Institute of Technology Delhi, New Delhi, India
| | | | - Gurpal Singh
- University Institute of Pharmaceutical Sciences, Panjab University, Chandigarh, India.
| | - Indu Pal Kaur
- University Institute of Pharmaceutical Sciences, Panjab University, Chandigarh, India.
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5
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Yemets A, Plokhovska S, Pushkarova N, Blume Y. Quantum Dot-Antibody Conjugates for Immunofluorescence Studies of Biomolecules and Subcellular Structures. J Fluoresc 2022; 32:1713-1723. [PMID: 35670918 DOI: 10.1007/s10895-022-02968-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Accepted: 05/05/2022] [Indexed: 01/14/2023]
Abstract
Quantum dots, or nanoscale semiconductors, are one of the most important materials for various research and development purposes. Due to their advantageous photoluminescence and electronic properties, namely, their unique photostability, high brightness, narrow emission spectra from visible to near-infrared wavelengths, convey them significant advantages over widely used fluorochromes, including organic dyes, fluorescent probes. Quantum dots are a unique instrument for a wide range of immunoassays with antibodies. The paper provides an overview of the developed and already applied methods of quantum dot surface modification, quantum dots conjugation to different antibodies (non-covalent, direct covalent linkage or with the use of special adapter molecules), as well as practical examples of recent quantum dot-antibody applications in the immunofluorescence microscopy for cell and cell structure imaging, fluorescent assays for biomolecules detection and in diagnostics of various diseases. The review presents advantages of quantum dot-antibody conjugation technology over the existing methods of immunofluorescence studies and a forward look into its potential prospects in biological and biomedical research.
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Affiliation(s)
- Alla Yemets
- Institute of Food Biotechnology and Genomics, National Academy of Sciences of Ukraine, Osypovskogo str., 2a, 04123, Kyiv, Ukraine.
| | - Svitlana Plokhovska
- Institute of Food Biotechnology and Genomics, National Academy of Sciences of Ukraine, Osypovskogo str., 2a, 04123, Kyiv, Ukraine
| | - Nadia Pushkarova
- Institute of Food Biotechnology and Genomics, National Academy of Sciences of Ukraine, Osypovskogo str., 2a, 04123, Kyiv, Ukraine
| | - Yaroslav Blume
- Institute of Food Biotechnology and Genomics, National Academy of Sciences of Ukraine, Osypovskogo str., 2a, 04123, Kyiv, Ukraine
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6
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Abdellatif AAH, Younis MA, Alsharidah M, Al Rugaie O, Tawfeek HM. Biomedical Applications of Quantum Dots: Overview, Challenges, and Clinical Potential. Int J Nanomedicine 2022; 17:1951-1970. [PMID: 35530976 PMCID: PMC9076002 DOI: 10.2147/ijn.s357980] [Citation(s) in RCA: 51] [Impact Index Per Article: 25.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Accepted: 04/12/2022] [Indexed: 12/14/2022] Open
Abstract
Despite the massive advancements in the nanomedicines and their associated research, their translation into clinically-applicable products is still below promises. The latter fact necessitates an in-depth evaluation of the current nanomedicines from a clinical perspective to cope with the challenges hampering their clinical potential. Quantum dots (QDs) are semiconductors-based nanomaterials with numerous biomedical applications such as drug delivery, live imaging, and medical diagnosis, in addition to other applications beyond medicine such as in solar cells. Nevertheless, the power of QDs is still underestimated in clinics. In the current article, we review the status of QDs in literature, their preparation, characterization, and biomedical applications. In addition, the market status and the ongoing clinical trials recruiting QDs are highlighted, with a special focus on the challenges limiting the clinical translation of QDs. Moreover, QDs are technically compared to other commercially-available substitutes. Eventually, we inspire the technical aspects that should be considered to improve the clinical fate of QDs.
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Affiliation(s)
- Ahmed A H Abdellatif
- Department of Pharmaceutics, College of Pharmacy, Qassim University, Buraydah, 51452, Saudi Arabia
- Department of Pharmaceutics and Pharmaceutical Technology, Faculty of Pharmacy, Al-Azhar University, Assiut, 71524, Egypt
| | - Mahmoud A Younis
- Department of Industrial Pharmacy, Faculty of Pharmacy, Assiut University, Assiut, 71526, Egypt
| | - Mansour Alsharidah
- Department of Physiology, College of Medicine, Qassim University, Buraydah, 51452, Saudi Arabia
| | - Osamah Al Rugaie
- Department of Basic Medical Sciences, College of Medicine and Medical Sciences, Qassim University, Unaizah, Al Qassim, 51911, Saudi Arabia
| | - Hesham M Tawfeek
- Department of Industrial Pharmacy, Faculty of Pharmacy, Assiut University, Assiut, 71526, Egypt
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7
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Bridle H, Balharry D, Gaiser B, Johnston H. Exploitation of Nanotechnology for the Monitoring of Waterborne Pathogens: State-of-the-Art and Future Research Priorities. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2015; 49:10762-77. [PMID: 26301863 DOI: 10.1021/acs.est.5b01673] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
Contaminated drinking water is one of the most important environmental contributors to the human disease burden. Monitoring of water for the presence of pathogens is an essential part of ensuring drinking water safety. In order to assess water quality it is essential to have methods available to sample and detect the type, level and viability of pathogens in water which are effective, cheap, quick, sensitive, and where possible high throughput. Nanotechnology has the potential to drastically improve the monitoring of waterborne pathogens when compared to conventional approaches. To date, there have been no reviews that outline the applications of nanotechnology in this area despite increasing exploitation of nanotechnology for this purpose. This review is therefore the first overview of the state-of-the-art in the application of nanotechnology to waterborne pathogen sampling and detection schemes. Research in this field has been centered on the use of engineered nanomaterials. The effectiveness and limitations of nanomaterial-based approaches is outlined. A future outlook of the advances that are likely to emerge in this area, as well as recommendations for areas of further research are provided.
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Affiliation(s)
- Helen Bridle
- Institute of Biological Chemistry, Biophysics and Bioengineering, Heriot-Watt University , Riccarton, Edinburgh, EH14 4AS, United Kingdom
| | - Dominique Balharry
- School of Life Sciences, Heriot-Watt University , Riccarton, Edinburgh, EH14 4AS, United Kingdom
- Centre for Genomics and Experimental Medicine, Institute of Genetics and Molecular Medicine, University of Edinburgh , Western General Hospital, Crewe Road, Edinburgh, EH4 2XU, United Kingdom
| | - Birgit Gaiser
- School of Life Sciences, Heriot-Watt University , Riccarton, Edinburgh, EH14 4AS, United Kingdom
| | - Helinor Johnston
- School of Life Sciences, Heriot-Watt University , Riccarton, Edinburgh, EH14 4AS, United Kingdom
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8
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Chen ZZ, Cai L, Chen MY, Lin Y, Pang DW, Tang HW. Indirect immunofluorescence detection of E. coli O157:H7 with fluorescent silica nanoparticles. Biosens Bioelectron 2014; 66:95-102. [PMID: 25460888 DOI: 10.1016/j.bios.2014.11.007] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2014] [Revised: 11/04/2014] [Accepted: 11/06/2014] [Indexed: 11/30/2022]
Abstract
A method of fluorescent nanoparticle-based indirect immunofluorescence assay using either fluorescence microscopy or flow cytometry for the rapid detection of pathogenic Escherichia coli O157:H7 was developed. The dye-doped silica nanoparticles (NPs) were synthesized using W/O microemulsion methods with the combination of 3-aminopropyltriethoxysilane (APTES) and fluorescein isothiocyanate (FITC) and polymerization reaction with carboxyethylsilanetriol sodium salt (CEOS). Protein A was immobilized at the surface of the NPs by covalent binding to the carboxyl linkers and the surface coverage of Protein A on NPs was determined by the Bradford method. Rabbit anti-E. Coli O157:H7 antibody was used as primary antibody to recognize E. coli O157:H7 and then antibody binding protein (Protein A) labeled with FITC-doped silica NPs (FSiNPs) was used to generate fluorescent signal. With this method, E. Coli O157:H7 in buffer and bacterial mixture was detected. In addition, E. coli O157:H7 in several spiked background beef samples were measured with satisfactory results. Therefore, the FSiNPs are applicable in signal-amplified bioassay of pathogens due to their excellent capabilities such as brighter fluorescence and higher photostability than the direct use of conventional fluorescent dyes.
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Affiliation(s)
- Ze-Zhong Chen
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, State Key Laboratory of Virology, and Wuhan Institute of Biotechnology, Wuhan University, Wuhan 430072, PR China; College of Chemistry and Environmental Engineering, Shanxi Datong University, Datong 037009, PR China
| | - Li Cai
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, State Key Laboratory of Virology, and Wuhan Institute of Biotechnology, Wuhan University, Wuhan 430072, PR China
| | - Min-Yan Chen
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, State Key Laboratory of Virology, and Wuhan Institute of Biotechnology, Wuhan University, Wuhan 430072, PR China
| | - Yi Lin
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, State Key Laboratory of Virology, and Wuhan Institute of Biotechnology, Wuhan University, Wuhan 430072, PR China
| | - Dai-Wen Pang
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, State Key Laboratory of Virology, and Wuhan Institute of Biotechnology, Wuhan University, Wuhan 430072, PR China
| | - Hong-Wu Tang
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, State Key Laboratory of Virology, and Wuhan Institute of Biotechnology, Wuhan University, Wuhan 430072, PR China.
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9
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Lin W, Hou Y, Lu Y, Abdelrahman AI, Cao P, Zhao G, Tong L, Qian J, Baranov V, Nitz M, Winnik MA. A high-sensitivity lanthanide nanoparticle reporter for mass cytometry: tests on microgels as a proxy for cells. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:3142-53. [PMID: 24617504 PMCID: PMC3983384 DOI: 10.1021/la403627p] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/20/2013] [Revised: 02/24/2014] [Indexed: 06/03/2023]
Abstract
This paper addresses the question of whether one can use lanthanide nanoparticles (e.g., NaHoF4) to detect surface biomarkers expressed at low levels by mass cytometry. To avoid many of the complications of experiments on live or fixed cells, we carried out proof-of-concept experiments using aqueous microgels with a diameter on the order of 700 nm as a proxy for cells. These microgels were used to test whether nanoparticle (NP) reagents would allow the detection of as few as 100 proteins per "cell" in cell-by-cell assays. Streptavidin (SAv), which served as the model biomarker, was attached to the microgel in two different ways. Covalent coupling to surface carboxyls of the microgel led to large numbers (>10(4)) of proteins per microgel, whereas biotinylation of the microgel followed by exposure to SAv led to much smaller numbers of SAv per microgel. Using mass cytometry, we compared two biotin-containing reagents, which recognized and bound to the SAvs on the microgel. One was a metal chelating polymer (MCP), a biotin end-capped polyaspartamide containing 50 Tb(3+) ions per probe. The other was a biotinylated NaHoF4 NP containing 15 000 Ho atoms per probe. Nonspecific binding was determined with bovine serum albumin (BSA) conjugated microgels. The MCP was effective at detecting and quantifying SAvs on the microgel with covalently bound SAv (20 000 SAvs per microgel) but was unable to give a meaningful signal above that of the BSA-coated microgel for the samples with low levels of SAv. Here the NP reagent gave a signal 2 orders of magnitude stronger than that of the MCP and allowed detection of NPs ranging from 100 to 500 per microgel. Sensitivity was limited by the level of nonspecific adsorption. This proof of concept experiment demonstrates the enhanced sensitivity possible with NP reagents in cell-by-cell assays by mass cytometry.
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Affiliation(s)
- Wanjuan Lin
- Department
of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario, Canada M5S 3H6
| | - Yi Hou
- Department
of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario, Canada M5S 3H6
| | - Yijie Lu
- Department
of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario, Canada M5S 3H6
| | - Ahmed I. Abdelrahman
- Department
of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario, Canada M5S 3H6
| | - Pengpeng Cao
- Department
of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario, Canada M5S 3H6
| | - Guangyao Zhao
- Department
of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario, Canada M5S 3H6
| | - Lemuel Tong
- Department
of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario, Canada M5S 3H6
| | - Jieshu Qian
- Department
of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario, Canada M5S 3H6
| | - Vladimir Baranov
- DVS Sciences, 70 Esna Park Drive, Markham, Ontario, Canada L3R 6E7
| | - Mark Nitz
- Department
of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario, Canada M5S 3H6
| | - Mitchell A. Winnik
- Department
of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario, Canada M5S 3H6
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10
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Srinivasan K, Thiruppathiraja C, Subramanian K, Dinakaran K. Sensitive detection of C. parvum using near infrared emitting Ag2S@silica core–shell nanospheres. RSC Adv 2014. [DOI: 10.1039/c4ra10833g] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Optical detection ofC. parvumin environmental samples using anti-oocysts McAb immobilized NIR emitting Ag2S@silica core–shell nanospheres as immunosensors is reported.
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Affiliation(s)
- K. Srinivasan
- Department of Chemistry
- MIT campus
- Anna University
- Chennai – 600 044, India
| | - C. Thiruppathiraja
- Division of Proteomics and Nanobiotechnology
- Science for Life Laboratory
- KTH-Royal Institute of Technology
- Stockholm, Sweden
| | - K. Subramanian
- Department of Chemistry
- MIT campus
- Anna University
- Chennai – 600 044, India
| | - K. Dinakaran
- Department of Chemistry
- Thiruvalluvar University
- Vellore – 632 115, India
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11
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Yari A, Saidikhah M. Dye doped Eosin yellowish silica nanoparticles as novel fluorophore for a peroxyoxalate chemiluminescence system. J Fluoresc 2012; 22:993-1002. [PMID: 22227703 DOI: 10.1007/s10895-012-1037-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2011] [Accepted: 01/01/2012] [Indexed: 11/28/2022]
Abstract
In this work, we report the preparation and characterization of novel dye doped fluorophore Eosin yellowish silica nanoparticles (ESNPs). We synthesized ESNPs by the Stöber method via encapsulation of Eosin Yellowish in silica particles by the condensation of tetraethyl orthosilicate under alkaline condition at room temperature. The resulted ESNPs were characterized by transmission electron microscopy, atomic force microscopy; UV-Visible, fluorescence and Fourier transform infrared spectroscopy. The sizes of the nanoparticles have been found to be 300.0 (±1.0), 400.0 (±1.1) and 500.0 (±5.2) nm depending the reaction conditions under which they were synthesized. Furthermore, because of intense light emission, the ESNPs were used as fluorophore in a peroxyoxalate chemiluminescence system. The effect of solvent and concentrations of necessary reagents, bis(2,4,6-trichlorophenyl)oxalate, sodium salicylate, hydrogen peroxide and the effects of size of the ESNP and temperature on the luminescence efficiency of the system were examined. The activation kinetic parameters of the system were also evaluated from the temperature investigation.
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Affiliation(s)
- Abdollah Yari
- Department of Chemistry, Faculty of Science, Lorestan University, Khorramabad, Iran.
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12
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D'Hondt L, Höfte M, Van Bockstaele E, Leus L. Applications of flow cytometry in plant pathology for genome size determination, detection and physiological status. MOLECULAR PLANT PATHOLOGY 2011; 12:815-28. [PMID: 21726378 PMCID: PMC6640489 DOI: 10.1111/j.1364-3703.2011.00711.x] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
Flow cytometers are probably the most multipurpose laboratory devices available. They can analyse a vast and very diverse range of cell parameters. This technique has left its mark on cancer, human immunodeficiency virus and immunology research, and is indispensable in routine clinical diagnostics. Flow cytometry (FCM) is also a well-known tool for the detection and physiological status assessment of microorganisms in drinking water, marine environments, food and fermentation processes. However, flow cytometers are seldom used in plant pathology, despite FCM's major advantages as both a detection method and a research tool. Potential uses of FCM include the characterization of genome sizes of fungal and oomycete populations, multiplexed pathogen detection and the monitoring of the viability, culturability and gene expression of plant pathogens, and many others. This review provides an overview of the history, advantages and disadvantages of FCM, and focuses on the current applications and future possibilities of FCM in plant pathology.
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Affiliation(s)
- Liesbet D'Hondt
- Plant Sciences Unit, Institute for Agricultural and Fisheries Research, Caritasstraat 21, 9090 Melle, Belgium.
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13
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He X, Zhou L, He D, Wang K, Cao J. Rapid and ultrasensitive E. coli O157:H7 quantitation by combination of ligandmagnetic nanoparticles enrichment with fluorescent nanoparticles based two-color flow cytometry. Analyst 2011; 136:4183-91. [PMID: 21858380 DOI: 10.1039/c1an15413c] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
A novel, fast and sensitive determination strategy for E. coli O157:H7 has been developed by combination of ligandmagnetic nanoparticles (LMNPs) enrichment with a fluorescent silica nanoparticles (FSiNPs) based two-color flow cytometry assay (LMNPs@FSiNPs-FCM). E. coli O157:H7 was first captured and enriched through the lectin concanavalin A (Con A) favored strong adhesion of E. coli O157:H7 to the mannose-conjugated magnetic nanoparticles. The enriched E. coli O157:H7 was further specially labeled with goat anti-E. coli O157:H7 antibody modified RuBpy-doped FSiNPs, and then stained with a nucleic acid dye SYBR Green I (SYBR-I). After dual-labeling with FSiNPs and SYBR-I, the enriched E. coli O157:H7 was determined using multiparameter FCM analysis. With this method, the detection sensitivity was greatly improved due to the LMNPs enrichment and the signal amplification of the FSiNPs labelling method. Furthermore, the false positives caused by aggregates of FSiNPs conjugates and nonspecific binding of FSiNPs to background debris could be significantly decreased. This assay allowed the detection of E. coli O157:H7 in PB buffer at levels as low as 7 cells mL(-1). The total assay time including E. coli O157:H7 sample enrichment and detection was less than 4 h. An artificially contaminated bottled mineral water sample with a concentration of 6 cells mL(-1) can be detected by this method. It is believed that the proposed method will find wide applications in biomedical fields demanding higher sensitive bacterial identification.
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Affiliation(s)
- Xiaoxiao He
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Biology, Hunan University, Changsha, 410082, China
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An advanced dual labeled gold nanoparticles probe to detect Cryptosporidium parvum using rapid immuno-dot blot assay. Biosens Bioelectron 2011; 26:4624-7. [DOI: 10.1016/j.bios.2011.05.006] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2011] [Revised: 04/22/2011] [Accepted: 05/04/2011] [Indexed: 11/20/2022]
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15
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Lin SW, Chang CH, Lin CH. High-throughput Fluorescence Detections in Microfluidic Systems. ACTA ACUST UNITED AC 2011. [DOI: 10.1016/s2211-4254(11)60005-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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16
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Theron J, Eugene Cloete T, de Kwaadsteniet M. Current molecular and emerging nanobiotechnology approaches for the detection of microbial pathogens. Crit Rev Microbiol 2010; 36:318-39. [DOI: 10.3109/1040841x.2010.489892] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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17
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Zhou J, Belov L, Huang PY, Shin JS, Solomon MJ, Chapuis PH, Bokey L, Chan C, Clarke C, Clarke SJ, Christopherson RI. Surface antigen profiling of colorectal cancer using antibody microarrays with fluorescence multiplexing. J Immunol Methods 2010; 355:40-51. [DOI: 10.1016/j.jim.2010.01.015] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2009] [Revised: 01/27/2010] [Accepted: 01/29/2010] [Indexed: 01/05/2023]
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Yang L, Wu L, Zhu S, Long Y, Hang W, Yan X. Rapid, Absolute, and Simultaneous Quantification of Specific Pathogenic Strain and Total Bacterial Cells Using an Ultrasensitive Dual-Color Flow Cytometer. Anal Chem 2009; 82:1109-16. [DOI: 10.1021/ac902524a] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Lingling Yang
- Department of Chemical Biology, College of Chemistry and Chemical Engineering, The Key Laboratory for Chemical Biology of Fujian Province, The Key Laboratory of Analytical Science, Xiamen University, Xiamen 361005, China
| | - Lina Wu
- Department of Chemical Biology, College of Chemistry and Chemical Engineering, The Key Laboratory for Chemical Biology of Fujian Province, The Key Laboratory of Analytical Science, Xiamen University, Xiamen 361005, China
| | - Shaobin Zhu
- Department of Chemical Biology, College of Chemistry and Chemical Engineering, The Key Laboratory for Chemical Biology of Fujian Province, The Key Laboratory of Analytical Science, Xiamen University, Xiamen 361005, China
| | - Yao Long
- Department of Chemical Biology, College of Chemistry and Chemical Engineering, The Key Laboratory for Chemical Biology of Fujian Province, The Key Laboratory of Analytical Science, Xiamen University, Xiamen 361005, China
| | - Wei Hang
- Department of Chemical Biology, College of Chemistry and Chemical Engineering, The Key Laboratory for Chemical Biology of Fujian Province, The Key Laboratory of Analytical Science, Xiamen University, Xiamen 361005, China
| | - Xiaomei Yan
- Department of Chemical Biology, College of Chemistry and Chemical Engineering, The Key Laboratory for Chemical Biology of Fujian Province, The Key Laboratory of Analytical Science, Xiamen University, Xiamen 361005, China
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Schumacher WC, Phipps AJ, Dutta PK. Detection of Bacillus anthracis spores: comparison of quantum dot and organic dye labeling agents. ADV POWDER TECHNOL 2009. [DOI: 10.1016/j.apt.2009.03.006] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Montón H, Nogués C, Rossinyol E, Castell O, Roldán M. QDs versus Alexa: reality of promising tools for immunocytochemistry. J Nanobiotechnology 2009; 7:4. [PMID: 19473541 PMCID: PMC2693426 DOI: 10.1186/1477-3155-7-4] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2009] [Accepted: 05/27/2009] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND The unique photonic properties of the recently developed fluorescent semiconductor nanocrystals (QDs) have made them a potential tool in biological research. However, QDs are not yet a part of routine laboratory techniques. Double and triple immunocytochemistries were performed in HeLa cell cultures with commercial CdSe QDs conjugated to antibodies. The optical characteristics, due to which QDs can be used as immunolabels, were evaluated in terms of emission spectra, photostability and specificity. RESULTS QDs were used as secondary and tertiary antibodies to detect beta-tubulin (microtubule network), GM130 (Golgi complex) and EEA1 (endosomal system). The data obtained were compared to homologous Alexa Fluor 594 organic dyes. It was found that QDs are excellent fluorochromes with higher intensity, narrower bandwidth values and higher photostability than Alexa dyes in an immunocytochemical process. In terms of specificity, QDs showed high specificity against GM130 and EEA1 primary antibodies, but poor specificity against beta-tubulin. Alexa dyes showed good specificity for all the targets tested. CONCLUSION This study demonstrates the great potential of QDs, as they are shown to have superior properties to Alexa dyes. Although their specificity still needs to be improved in some cases, QDs conjugated to antibodies can be used instead of organic molecules in routine immunocytochemistry.
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Affiliation(s)
- Helena Montón
- Servei de Microscòpia, Universitat Autònoma de Barcelona, Bellaterra Campus, 08193 Bellaterra, Barcelona, Spain.
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Bergquist PL, Hardiman EM, Ferrari BC, Winsley T. Applications of flow cytometry in environmental microbiology and biotechnology. Extremophiles 2009; 13:389-401. [PMID: 19301090 DOI: 10.1007/s00792-009-0236-4] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2009] [Accepted: 02/26/2009] [Indexed: 10/21/2022]
Abstract
Flow cytometry (FCM) is a technique for counting, examining and sorting microscopic particles suspended in a stream of fluid. It uses the principles of light scattering, light excitation and the emission from fluorescent molecules to generate specific multiparameter data from particles and cells. The cells are hydrodynamically focussed in a sheath solution before being intercepted by a focused light source provided by a laser. FCM has been used primarily in medical applications but is being used increasingly for the examination of individual cells from environmental samples. It has found uses in the isolation of both culturable and hitherto non-culturable bacteria present infrequently in environmental samples using appropriate growth conditions. FCM lends itself to high-throughput applications in directed evolution for the analysis of single cells or cell populations carrying mutant genes. It is also suitable for encapsulation studies where individual bacteria are compartmentalised with substrate in water-in-oil-in-water emulsions or with individual genes in transcriptional/translational mixtures for the production of mutant enzymes. The sensitivity of the technique has allowed the examination of gene optimisation by a procedure known as random or neutral drift where screening and selection is based on the retention of some predetermined level of activity through multiple rounds of mutagenesis.
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Affiliation(s)
- Peter L Bergquist
- Department of Chemistry and Biomolecular Sciences, Macquarie University, North Ryde, Sydney, NSW, 2109, Australia.
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Potential use of quantum dots in flow cytometry. Int J Mol Sci 2008; 9:2622-2638. [PMID: 19330097 PMCID: PMC2635656 DOI: 10.3390/ijms9122622] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2008] [Revised: 11/20/2008] [Accepted: 12/10/2008] [Indexed: 11/16/2022] Open
Abstract
QDs may offer significant advantages in environmental and bead-based applications where the target cells need to be discriminated above background fluorescence. We have examined the possible applications of QDs for flow cytometric measurements (FCM) by studying their excitation - emission spectra and their binding to paramagnetic beads. We labelled beads with either QDs or a commonly-used fluorochrome (FITC) and studied their fluorescence intensity by FCM. Flow cytometric comparisons indicated that the minimum fluorophore concentration required for detection of QDs above autofluorescent background was 100-fold less than for FITC.
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Qin D, He X, Wang K, Tan W. Using fluorescent nanoparticles and SYBR Green I based two-color flow cytometry to determine Mycobacterium tuberculosis avoiding false positives. Biosens Bioelectron 2008; 24:626-31. [DOI: 10.1016/j.bios.2008.06.023] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2008] [Revised: 05/06/2008] [Accepted: 06/04/2008] [Indexed: 11/15/2022]
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Luo PG, Stutzenberger FJ. Nanotechnology in the detection and control of microorganisms. ADVANCES IN APPLIED MICROBIOLOGY 2008; 63:145-81. [PMID: 18395127 DOI: 10.1016/s0065-2164(07)00004-4] [Citation(s) in RCA: 74] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Pengju G Luo
- Microbiology and Molecular Medicine, Department of Biological Sciences, Clemson University, Clemson, South Carolina 29634, USA
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