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Guo M, Yi Z, Li H, Liu Y, Ding L, Babailov SP, Xiong C, Huang G, Zhang J. NMR Immunosensor Based on a Targeted Gadolinium Nanoprobe for Detecting Salmonella in Milk. Anal Chem 2024. [PMID: 38943569 DOI: 10.1021/acs.analchem.4c01265] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/01/2024]
Abstract
Detecting harmful pathogens in food is not only a crucial aspect of food quality management but also an effective way to ensure public health. In this paper, a complete nuclear magnetic resonance biosensor based on a novel gadolinium (Gd)-targeting molecular probe was developed for the detection of Salmonella in milk. First, streptavidin was conjugated to the activated macromolecular polyaspartic acid (PASP) via an amide reaction to generate SA-PASP. Subsequently, the strong chelating and adsorption properties of PASP toward the lanthanide metal gadolinium ions were exploited to generate the magnetic complex (SA-PASP-Gd). Finally, the magnetic complex was linked to biotinylated antibodies to obtain the bioprobe and achieve the capture of Salmonella. Under optimal experimental conditions, the sensor we have constructed can achieve a rapid detection of Salmonella within 1.5 h, with a detection limit of 7.1 × 103 cfu mL-1.
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Affiliation(s)
- Mengdi Guo
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, P. R. China
| | - Zhibin Yi
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, P. R. China
| | - Huo Li
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, P. R. China
| | - Yang Liu
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, P. R. China
| | - Liping Ding
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, P. R. China
| | - Sergey P Babailov
- A.V. Nikolaev Institute of Inorganic Chemistry, Siberian Branch of the Russian Academy of Sciences, Avenue Lavrentyev 3, Novosibirsk 630090, Russian Federation
| | - Chunhong Xiong
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, P. R. China
| | - Ganhui Huang
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, P. R. China
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Alshammari A, van Zalinge H, Sandall I. In Situ Monitoring of Aptamer-Protein Binding on a ZnO Surface Using Spectroscopic Ellipsometry. SENSORS (BASEL, SWITZERLAND) 2023; 23:6353. [PMID: 37514647 PMCID: PMC10385375 DOI: 10.3390/s23146353] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Revised: 07/04/2023] [Accepted: 07/10/2023] [Indexed: 07/30/2023]
Abstract
The dissolution of zinc oxide is investigated using spectroscopic ellipsometry to investigate its suitability as a platform for biosensing applications. The results indicate that once the ZnO surface has been functionalised, it is suitably protected, and no significant dissolving of the ZnO occurs. The binding kinetics of the SARS-CoV-2 spike protein on aptamer-functionalised zinc oxide surfaces are subsequently investigated. Values are extracted for the refractive index and associated optical constants for both the aptamer layer used and the protein itself. It is shown that upon an initial exposure to the protein, a rapid fluctuation in the surface density is observed. After around 20 min, this effect stabilises, and a fixed increase in the surface density is observed, which itself increases as the concentration of the protein is increased. This technique and setup are demonstrated to have a limit-of-detection down to 1 nanomole (nM) and display a linear response to concentrations up to 100 nM.
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Affiliation(s)
- Adeem Alshammari
- Department of Electrical Engineering & Electronics, University of Liverpool, Liverpool L69 3GJ, UK
| | - Harm van Zalinge
- Department of Electrical Engineering & Electronics, University of Liverpool, Liverpool L69 3GJ, UK
| | - Ian Sandall
- Department of Electrical Engineering & Electronics, University of Liverpool, Liverpool L69 3GJ, UK
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Li Y, Hu Y, Chen T, Chen Y, Li Y, Zhou H, Yang D. Advanced detection and sensing strategies of Pseudomonas aeruginosa and quorum sensing biomarkers: A review. Talanta 2022; 240:123210. [PMID: 35026633 DOI: 10.1016/j.talanta.2022.123210] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Revised: 12/31/2021] [Accepted: 01/04/2022] [Indexed: 11/25/2022]
Abstract
Pseudomonas aeruginosa (P. aeruginosa), a ubiquitous opportunistic pathogen, can frequently cause chronic obstructive pulmonary disease, cystic fibrosis and chronic wounds, and potentially lead to severe morbidity and mortality. Timely and adequate treatment of nosocomial infection in clinic depends on rapid detection and accurate identification of P. aeruginosa and its early-stage antibiotic susceptibility test. Traditional methods like plating culture, polymerase chain reaction, and enzyme-linked immune sorbent assays are time-consuming and require expensive equipment, limiting the rapid diagnostic application. Advanced sensing strategy capable of fast, sensitive and simple detection with low cost has therefore become highly desired in point of care testing (POCT) of nosocomial pathogens. Within this review, advanced detection and sensing strategies for P. aeruginosa cells along with associated quorum sensing (QS) molecules over the last ten years are discussed and summarized. Firstly, the principles of four commonly used sensing strategies including localized surface plasmon resonance (LSPR), surface-enhanced Raman spectroscopy (SERS), electrochemistry, and fluorescence are briefly overviewed. Then, the advancement of the above sensing techniques for P. aeruginosa cells and its QS biomarkers detection are introduced, respectively. In addition, the integration with novel compatible platforms towards clinical application is highlighted in each section. Finally, the current achievements are summarized along with proposed challenges and prospects.
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Affiliation(s)
- Yingying Li
- The Affiliated Hospital of Medical School, Ningbo University, Ningbo, Zhejiang Province, 315211, People's Republic of China; Department of Preventative Medicine, Zhejiang Key Laboratory of Pathophysiology, School of Medicine, Ningbo University, 818 Fenghua Road, Ningbo, Zhejiang Province, 315211, People's Republic of China
| | - Yang Hu
- Department of Preventative Medicine, Zhejiang Key Laboratory of Pathophysiology, School of Medicine, Ningbo University, 818 Fenghua Road, Ningbo, Zhejiang Province, 315211, People's Republic of China
| | - Tao Chen
- Department of Preventative Medicine, Zhejiang Key Laboratory of Pathophysiology, School of Medicine, Ningbo University, 818 Fenghua Road, Ningbo, Zhejiang Province, 315211, People's Republic of China
| | - Yan Chen
- Department of Preventative Medicine, Zhejiang Key Laboratory of Pathophysiology, School of Medicine, Ningbo University, 818 Fenghua Road, Ningbo, Zhejiang Province, 315211, People's Republic of China
| | - Yi Li
- Graduate School of Biomedical Engineering and ARC Centre of Excellence in Nanoscale Biophotonics, University of New South Wales, Sydney, 2052, Australia
| | - Haibo Zhou
- College of Pharmacy, Jinan University, Guangzhou, Guangdong, 510632, China
| | - Danting Yang
- The Affiliated Hospital of Medical School, Ningbo University, Ningbo, Zhejiang Province, 315211, People's Republic of China; Department of Preventative Medicine, Zhejiang Key Laboratory of Pathophysiology, School of Medicine, Ningbo University, 818 Fenghua Road, Ningbo, Zhejiang Province, 315211, People's Republic of China.
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Uskoković V, Huynh E, Tang S, Jovanović S, Wu VM. Colloids or powders: Which nanoparticle formulations do cells like more? Colloids Surf B Biointerfaces 2019; 181:39-47. [PMID: 31121380 DOI: 10.1016/j.colsurfb.2019.05.019] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2019] [Revised: 05/08/2019] [Accepted: 05/09/2019] [Indexed: 01/24/2023]
Abstract
Understanding the difference in physicochemical properties and biological response between colloidal and powder formulations of identical materials is important before the given materials are used in a medical milieu. In this study we compared a set of biological effects of colloidal and powder formulations of composite nanoparticles comprising superparamagnetic iron oxide cores and silicate/carbon shells. Magnetic dipole interaction between adjacent nanoparticles was more pronounced in their powders than in their colloidal formulations. Nanoparticles delivered as powders were thus more responsive to the magnetic field, but exhibited reduced uptake in bone and brain cancer cells, including K7M2 osteosarcoma line and U87 and E297 glioblastoma lines. Specifically, while the alternate magnetic field elicited a more rapid heat generation in cell culture media supplemented with the magnetic powders, the nanoparticles dispersed in the same media were uptaken by the cancer cells more copiously. The cellular uptake proved to be more crucial in defining the effect on cell survival, given that suspended formulations elicited a greater degree of cancer cell death in the magnetic field compared to the powder-containing formulations. Because of this effect, colloidal formulations were able to target cancer cells more effectively than the powders: they reduced the viability of all three tested cancer cell lines to a significantly greater degree that the viability of the normal, MDCK-MDR1 cell line. It is concluded that better uptake profile can make up for the lower heating rate in the AC field and lead to a more effective magnetic hyperthermia therapy. These results also demonstrate that the direct delivery of ferrofluids is more optimal than the administration of their constitutive particles as powders.
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Affiliation(s)
- Vuk Uskoković
- Department of Bioengineering, University of Illinois, Chicago, IL 60607, United States; Advanced Materials and Nanobiotechnology Laboratory, Center for Targeted Drug Delivery, Chapman University, Irvine, CA 92618-1908, United States.
| | - Eric Huynh
- Advanced Materials and Nanobiotechnology Laboratory, Center for Targeted Drug Delivery, Chapman University, Irvine, CA 92618-1908, United States
| | - Sean Tang
- Advanced Materials and Nanobiotechnology Laboratory, Center for Targeted Drug Delivery, Chapman University, Irvine, CA 92618-1908, United States
| | - Sonja Jovanović
- Advanced Materials Department, Jožef Stefan Institute, Ljubljana, Slovenia; Laboratory of Physics, Vinča Institute of Nuclear Sciences, University of Belgrade, Belgrade, Serbia
| | - Victoria M Wu
- Advanced Materials and Nanobiotechnology Laboratory, Center for Targeted Drug Delivery, Chapman University, Irvine, CA 92618-1908, United States
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Kimani MK, Loo R, Goluch ED. Biosample Concentration Using Microscale Forward Osmosis with Electrochemical Monitoring. Anal Chem 2019; 91:7487-7494. [DOI: 10.1021/acs.analchem.9b02163] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Martin K. Kimani
- Department of Chemical Engineering, Northeastern University, Boston, Massachusetts 02115, United States
| | - Rachel Loo
- Department of Chemical Engineering, Northeastern University, Boston, Massachusetts 02115, United States
| | - Edgar D. Goluch
- Department of Chemical Engineering, Northeastern University, Boston, Massachusetts 02115, United States
- Department of Bioengineering, Biology, Civil & Environmental Engineering, Northeastern University, Boston, Massachusetts 02115, United States
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Lee H, Lee D, Park JH, Song SH, Jeong IG, Kim CS, Searson PC, Lee KH. High throughput differential identification of TMPRSS2-ERG fusion genes in prostate cancer patient urine. Biomaterials 2017; 135:23-29. [DOI: 10.1016/j.biomaterials.2017.04.049] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2017] [Revised: 04/26/2017] [Accepted: 04/27/2017] [Indexed: 12/18/2022]
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