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Diboronate Fluorophore for the Measurement of l-Glucose and Other Carbohydrates and Its Interaction with Albumin

[Image: see text] l-Glucose has recently been investigated as an artificial sweetener, but no facile method is established for the measurement of l-glucose. The commercial probe Eversense employs a fluorescent diboronate in a small device for the optical monitoring of d-glucose in people with diabet...

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Autores principales: Solomos, Konstantinos, Tarus, Victoria, Kotek, Vladislav, Invernizzi, Gaetano, Hoeg-Jensen, Thomas
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2022
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9301969/
https://www.ncbi.nlm.nih.gov/pubmed/35874210
http://dx.doi.org/10.1021/acsomega.2c02519
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author Solomos, Konstantinos
Tarus, Victoria
Kotek, Vladislav
Invernizzi, Gaetano
Hoeg-Jensen, Thomas
author_facet Solomos, Konstantinos
Tarus, Victoria
Kotek, Vladislav
Invernizzi, Gaetano
Hoeg-Jensen, Thomas
author_sort Solomos, Konstantinos
collection PubMed
description [Image: see text] l-Glucose has recently been investigated as an artificial sweetener, but no facile method is established for the measurement of l-glucose. The commercial probe Eversense employs a fluorescent diboronate in a small device for the optical monitoring of d-glucose in people with diabetes. Being achiral, the Eversense probe should be able to detect l-glucose as well as native d-glucose, but the probe is designed for fixation under the skin, and our attempts to use the probe at laboratory conditions failed, as the probe was resetting when moved between compartments. We thus designed a water-soluble anthracene diboronate 8 similar to the fluorophore used in Eversense and found 8 to respond well to l-glucose and other carbohydrates and artificial sweeteners, thus enabling measurements of l-glucose with the limit of quantification of 12 μM. Notably, the fluorescent signal of diboronate 8 was largely quenched in buffers with the physiological concentration of albumin (0.5 mM), so the given analytical method would need more optimization to be useful for measuring l-glucose and other carbohydrates in blood samples. We suspect that other diboronate fluorophores from the literature may be similarly quenched if applied in the presence of albumin.
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spelling pubmed-93019692022-07-22 Diboronate Fluorophore for the Measurement of l-Glucose and Other Carbohydrates and Its Interaction with Albumin Solomos, Konstantinos Tarus, Victoria Kotek, Vladislav Invernizzi, Gaetano Hoeg-Jensen, Thomas ACS Omega [Image: see text] l-Glucose has recently been investigated as an artificial sweetener, but no facile method is established for the measurement of l-glucose. The commercial probe Eversense employs a fluorescent diboronate in a small device for the optical monitoring of d-glucose in people with diabetes. Being achiral, the Eversense probe should be able to detect l-glucose as well as native d-glucose, but the probe is designed for fixation under the skin, and our attempts to use the probe at laboratory conditions failed, as the probe was resetting when moved between compartments. We thus designed a water-soluble anthracene diboronate 8 similar to the fluorophore used in Eversense and found 8 to respond well to l-glucose and other carbohydrates and artificial sweeteners, thus enabling measurements of l-glucose with the limit of quantification of 12 μM. Notably, the fluorescent signal of diboronate 8 was largely quenched in buffers with the physiological concentration of albumin (0.5 mM), so the given analytical method would need more optimization to be useful for measuring l-glucose and other carbohydrates in blood samples. We suspect that other diboronate fluorophores from the literature may be similarly quenched if applied in the presence of albumin. American Chemical Society 2022-07-06 /pmc/articles/PMC9301969/ /pubmed/35874210 http://dx.doi.org/10.1021/acsomega.2c02519 Text en © 2022 The Authors. Published by American Chemical Society https://creativecommons.org/licenses/by-nc-nd/4.0/Permits non-commercial access and re-use, provided that author attribution and integrity are maintained; but does not permit creation of adaptations or other derivative works (https://creativecommons.org/licenses/by-nc-nd/4.0/).
spellingShingle Solomos, Konstantinos
Tarus, Victoria
Kotek, Vladislav
Invernizzi, Gaetano
Hoeg-Jensen, Thomas
Diboronate Fluorophore for the Measurement of l-Glucose and Other Carbohydrates and Its Interaction with Albumin
title Diboronate Fluorophore for the Measurement of l-Glucose and Other Carbohydrates and Its Interaction with Albumin
title_full Diboronate Fluorophore for the Measurement of l-Glucose and Other Carbohydrates and Its Interaction with Albumin
title_fullStr Diboronate Fluorophore for the Measurement of l-Glucose and Other Carbohydrates and Its Interaction with Albumin
title_full_unstemmed Diboronate Fluorophore for the Measurement of l-Glucose and Other Carbohydrates and Its Interaction with Albumin
title_short Diboronate Fluorophore for the Measurement of l-Glucose and Other Carbohydrates and Its Interaction with Albumin
title_sort diboronate fluorophore for the measurement of l-glucose and other carbohydrates and its interaction with albumin
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9301969/
https://www.ncbi.nlm.nih.gov/pubmed/35874210
http://dx.doi.org/10.1021/acsomega.2c02519
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