Development of a Molecular Recognition Electrode and Investigation of a Biomolecular Application in Non-Aqueous Media —Electrochemical Detection of Uremia-Related Substances Excreted via ATP-Binding Cassette Transporter G2—
Detection methods for small biological molecules are needed to facilitate analysis of physiological and pathological mechanisms. We aimed to construct a 2-mercaptobenzimidazole modified gold nanoparticle electrode for detection of uremia-related substances, e.g. uric acid (UA) and indoxyl sulfate (I...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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The Electrochemical Society of Japan
2021-11-01
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| Series: | Electrochemistry |
| Subjects: | |
| Online Access: | https://www.jstage.jst.go.jp/article/electrochemistry/89/6/89_21-00072/_html/-char/en |
| _version_ | 1797970360463785984 |
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| author | Kyoko FUJITA Misaki SEKIDO Kohei KANNO Kio HATAE Kimiyoshi ICHIDA |
| author_facet | Kyoko FUJITA Misaki SEKIDO Kohei KANNO Kio HATAE Kimiyoshi ICHIDA |
| author_sort | Kyoko FUJITA |
| collection | DOAJ |
| description | Detection methods for small biological molecules are needed to facilitate analysis of physiological and pathological mechanisms. We aimed to construct a 2-mercaptobenzimidazole modified gold nanoparticle electrode for detection of uremia-related substances, e.g. uric acid (UA) and indoxyl sulfate (IS), excreted via transporters expressed on cultured cells. This electrode detected the current changes in phosphate buffer at different potentials as the concentrations of ascorbic acid, UA, dopamine, and IS were linearly increased in 1 µg/mL increments. Real-time detection of IS excretion via ATP-binding cassette transporter G2 (ABCG2) expression was performed in a transcellular transport model with amperometric measurement. The electrode was highly sensitive to the current changes with IS even in a serum-free culture medium. We observed an increase in current of approximately 0.10 µA per mm2 of polycrystalline electrode surface area with each 1 µg/mL increase in IS concentration. The current increased with time when the electrode was exposed to cells transfected with ABCG2 plasmid in tissue culture insert, indicating that IS excretion occurred via the transporter encoded by ABCG2. In conclusion, the electrode could be successfully used for the real-time detection of IS excreted via ABCG2 expressed on cultured cells. |
| first_indexed | 2024-04-11T03:16:41Z |
| format | Article |
| id | doaj.art-fdfaa5868b1e49fa8812ae52d809b125 |
| institution | Directory Open Access Journal |
| issn | 2186-2451 |
| language | English |
| last_indexed | 2024-04-11T03:16:41Z |
| publishDate | 2021-11-01 |
| publisher | The Electrochemical Society of Japan |
| record_format | Article |
| series | Electrochemistry |
| spelling | doaj.art-fdfaa5868b1e49fa8812ae52d809b1252023-01-02T10:21:03ZengThe Electrochemical Society of JapanElectrochemistry2186-24512021-11-0189655255610.5796/electrochemistry.21-00072electrochemistryDevelopment of a Molecular Recognition Electrode and Investigation of a Biomolecular Application in Non-Aqueous Media —Electrochemical Detection of Uremia-Related Substances Excreted via ATP-Binding Cassette Transporter G2—Kyoko FUJITA0Misaki SEKIDO1Kohei KANNO2Kio HATAE3Kimiyoshi ICHIDA4Department of Pathophysiology, Tokyo University of Pharmacy and Life SciencesDepartment of Pathophysiology, Tokyo University of Pharmacy and Life SciencesDepartment of Pathophysiology, Tokyo University of Pharmacy and Life SciencesDepartment of Pathophysiology, Tokyo University of Pharmacy and Life SciencesDepartment of Pathophysiology, Tokyo University of Pharmacy and Life SciencesDetection methods for small biological molecules are needed to facilitate analysis of physiological and pathological mechanisms. We aimed to construct a 2-mercaptobenzimidazole modified gold nanoparticle electrode for detection of uremia-related substances, e.g. uric acid (UA) and indoxyl sulfate (IS), excreted via transporters expressed on cultured cells. This electrode detected the current changes in phosphate buffer at different potentials as the concentrations of ascorbic acid, UA, dopamine, and IS were linearly increased in 1 µg/mL increments. Real-time detection of IS excretion via ATP-binding cassette transporter G2 (ABCG2) expression was performed in a transcellular transport model with amperometric measurement. The electrode was highly sensitive to the current changes with IS even in a serum-free culture medium. We observed an increase in current of approximately 0.10 µA per mm2 of polycrystalline electrode surface area with each 1 µg/mL increase in IS concentration. The current increased with time when the electrode was exposed to cells transfected with ABCG2 plasmid in tissue culture insert, indicating that IS excretion occurred via the transporter encoded by ABCG2. In conclusion, the electrode could be successfully used for the real-time detection of IS excreted via ABCG2 expressed on cultured cells.https://www.jstage.jst.go.jp/article/electrochemistry/89/6/89_21-00072/_html/-char/enmodified gold nanoparticle electrodeindoxyl sulfatebiomolecular detectiontransport protein |
| spellingShingle | Kyoko FUJITA Misaki SEKIDO Kohei KANNO Kio HATAE Kimiyoshi ICHIDA Development of a Molecular Recognition Electrode and Investigation of a Biomolecular Application in Non-Aqueous Media —Electrochemical Detection of Uremia-Related Substances Excreted via ATP-Binding Cassette Transporter G2— Electrochemistry modified gold nanoparticle electrode indoxyl sulfate biomolecular detection transport protein |
| title | Development of a Molecular Recognition Electrode and Investigation of a Biomolecular Application in Non-Aqueous Media —Electrochemical Detection of Uremia-Related Substances Excreted via ATP-Binding Cassette Transporter G2— |
| title_full | Development of a Molecular Recognition Electrode and Investigation of a Biomolecular Application in Non-Aqueous Media —Electrochemical Detection of Uremia-Related Substances Excreted via ATP-Binding Cassette Transporter G2— |
| title_fullStr | Development of a Molecular Recognition Electrode and Investigation of a Biomolecular Application in Non-Aqueous Media —Electrochemical Detection of Uremia-Related Substances Excreted via ATP-Binding Cassette Transporter G2— |
| title_full_unstemmed | Development of a Molecular Recognition Electrode and Investigation of a Biomolecular Application in Non-Aqueous Media —Electrochemical Detection of Uremia-Related Substances Excreted via ATP-Binding Cassette Transporter G2— |
| title_short | Development of a Molecular Recognition Electrode and Investigation of a Biomolecular Application in Non-Aqueous Media —Electrochemical Detection of Uremia-Related Substances Excreted via ATP-Binding Cassette Transporter G2— |
| title_sort | development of a molecular recognition electrode and investigation of a biomolecular application in non aqueous media electrochemical detection of uremia related substances excreted via atp binding cassette transporter g2 |
| topic | modified gold nanoparticle electrode indoxyl sulfate biomolecular detection transport protein |
| url | https://www.jstage.jst.go.jp/article/electrochemistry/89/6/89_21-00072/_html/-char/en |
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