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Verma R, Pyreddy S, Redmond CE, Qazi F, Khalid A, O'Brien-Simpson NM, Shukla R, Tomljenovic-Hanic S. Detection and identification of amino acids and proteins using their intrinsic fluorescence in the visible light spectrum. Anal Chim Acta 2023; 1282:341925. [PMID: 37923411 DOI: 10.1016/j.aca.2023.341925] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Accepted: 10/15/2023] [Indexed: 11/07/2023]
Abstract
The detection and identification of biomolecules are essential in the modern era of medical diagnostics. Several approaches have been established, but they have significant limitations such as laborious and time-consuming sample preparation, analysis, and the need to use external probes which provide adequate but not desired levels of accuracy and sensitivity. Herein, we have explored successfully a non-invasive technique to detect and identifybiomolecules such as amino acids and proteins by utilizing their intrinsic fluorescence. The developed confocal microscopy method revealed high and photostable emission counts of these biomolecules including amino acids (tryptophan, phenylalanine, tyrosine, proline, histidine, cysteine, aspartic acid, asparagine, isoleucine, lysine, glutamic acid, arginine) and proteins (HSA, BSA) when they are excited with a green laser. The fluorescence lifetime of the samples enabled the identification and distinction of known and blind samples of biomolecules from each other. The developed optical technique is straightforward, non-destructive and does not require laborious labeling to identify specific proteins, and may serve as the basis for the development of a device that would quickly and accurately identify proteins at an amino acid level. Therefore, this approach would open an avenue for precise detection in imaging and at the same time increases our understanding of chemical dynamics at the molecular level.
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Affiliation(s)
- Rajni Verma
- School of Physics, University of Melbourne, Parkville, 3010, Australia; National Creative Research Center for Spin Dynamics and SW Devices, Department of Material Sciences and Engineering, Seoul National University, Seoul 151-744, South Korea.
| | - Suneela Pyreddy
- Sir Ian Potter Biosensing Facility and Nanobiotechnology Research Laboratory, School of Science, RMIT University, Melbourne, Victoria, 3001, Australia; Centre for Advanced Materials & Industrial Chemistry RMIT University, Melbourne, Victoria 3001, Australia
| | - Connagh E Redmond
- ACTV Research Group, Oral Health Research Centre, Melbourne Dental School, The University of Melbourne, Melbourne, Victoria, 3010, Australia
| | - Farah Qazi
- School of Physics, University of Melbourne, Parkville, 3010, Australia
| | - Asma Khalid
- School of Science, RMIT University, Melbourne, Victoria, 3001, Australia
| | - Neil M O'Brien-Simpson
- ACTV Research Group, Oral Health Research Centre, Melbourne Dental School, The University of Melbourne, Melbourne, Victoria, 3010, Australia
| | - Ravi Shukla
- Sir Ian Potter Biosensing Facility and Nanobiotechnology Research Laboratory, School of Science, RMIT University, Melbourne, Victoria, 3001, Australia; Centre for Advanced Materials & Industrial Chemistry RMIT University, Melbourne, Victoria 3001, Australia
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Gérard V, Ay E, Launay V, Galopin C, Morlet‐Savary F, Lalevée J. Improvement of color stability using a chelating agent in model soft beverages subjected to Fenton reaction. J CHIN CHEM SOC-TAIP 2022. [DOI: 10.1002/jccs.202200164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Violaine Gérard
- Université de Haute‐Alsace, CNRS, IS2M UMR 7361 Mulhouse France
- Université de Strasbourg Strasbourg France
| | - Emel Ay
- Université de Haute‐Alsace, CNRS, IS2M UMR 7361 Mulhouse France
- Université de Strasbourg Strasbourg France
| | - Valentin Launay
- Université de Haute‐Alsace, CNRS, IS2M UMR 7361 Mulhouse France
- Université de Strasbourg Strasbourg France
| | | | - Fabrice Morlet‐Savary
- Université de Haute‐Alsace, CNRS, IS2M UMR 7361 Mulhouse France
- Université de Strasbourg Strasbourg France
| | - Jacques Lalevée
- Université de Haute‐Alsace, CNRS, IS2M UMR 7361 Mulhouse France
- Université de Strasbourg Strasbourg France
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Dyakov YA, Adamson SO, Wang PK, Vetchinkin AS, Golubkov GV, Peskov VD, Rodionov AI, Syromyatnikov AG, Umanskii SY, Shestakov DV, Golubkov MG. Excited State Dynamics of CH3CHOO Criegee Intermediates in the Upper Atmosphere of the Earth. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY B 2022. [DOI: 10.1134/s1990793122030149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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