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Yan J, Zhang FL, Jin KQ, Li JX, Wang LJ, Fan WT, Huang WH, Liu YL. Mechanical Strain Induces and Increases Vesicular Release Monitored by Microfabricated Stretchable Electrodes. Angew Chem Int Ed Engl 2024:e202403241. [PMID: 38710651 DOI: 10.1002/anie.202403241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2024] [Revised: 04/12/2024] [Accepted: 05/06/2024] [Indexed: 05/08/2024]
Abstract
Exocytosis involving the fusion of intracellular vesicles with cell membrane, is thought to be modulated by the mechanical cues in the microenvironment. Single-cell electrochemistry can offer unique information about the quantification and kinetics of exocytotic events; however, the effects of mechanical force on vesicular release have been poorly explored. Herein, we developed a stretchable microelectrode with excellent electrochemical stability under mechanical deformation by microfabrication of functionalized poly(3,4-ethylenedioxythiophene) conductive ink, which achieved real-time quantitation of strain-induced vesicular exocytosis from a single cell for the first time. We found that mechanical strain could cause calcium influx via the activation of Piezo1 channels in chromaffin cell, initiating the vesicular exocytosis process. Interestingly, mechanical strain increases the amount of catecholamines released by accelerating the opening and prolonging the closing of fusion pore during exocytosis. This work is expected to provide revealing insights into the regulatory effects of mechanical stimuli on vesicular exocytosis.
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Affiliation(s)
- Jing Yan
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, 430072, China
| | - Fu-Li Zhang
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, 430072, China
| | - Kai-Qi Jin
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, 430072, China
| | - Jia-Xin Li
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, 430072, China
| | - Li-Jun Wang
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, 430072, China
| | - Wen-Ting Fan
- Core Facility of Wuhan University, Wuhan University, Wuhan, 430072, China
| | - Wei-Hua Huang
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, 430072, China
| | - Yan-Ling Liu
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, 430072, China
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He X, Ewing AG. Hofmeister Series: From Aqueous Solution of Biomolecules to Single Cells and Nanovesicles. Chembiochem 2023; 24:e202200694. [PMID: 37043703 DOI: 10.1002/cbic.202200694] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Revised: 01/30/2023] [Indexed: 04/14/2023]
Abstract
Hofmeister effects play a critical role in numerous physicochemical and biological phenomena, including the solubility and/or accumulation of proteins, the activities of enzymes, ion transport in biochannels, the structure of lipid bilayers, and the dynamics of vesicle opening and exocytosis. This minireview focuses on how ionic specificity affects the physicochemical properties of biomolecules to regulate cellular exocytosis, vesicular content, and nanovesicle opening. We summarize recent progress in further understanding Hofmeister effects on biomacromolecules and their applications in biological systems. These important steps have increased our understanding of the Hofmeister effects on cellular exocytosis, vesicular content, and nanovesicle opening. Increasing evidence is firmly establishing that the ions along the Hofmeister series play an important role in living organisms that has often been ignored.
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Affiliation(s)
- Xiulan He
- Department of Chemistry and Molecular Biology, University of Gothenburg, Kemivägen 10, 41296, Gothenburg, Sweden
| | - Andrew G Ewing
- Department of Chemistry and Molecular Biology, University of Gothenburg, Kemivägen 10, 41296, Gothenburg, Sweden
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Zhang X, Hatamie A, Ewing AG. Direct Acquisition of the Gap Height of Biological Tissue-Electronic Chemical Sensor Interfaces. Angew Chem Int Ed Engl 2022; 61:e202210224. [PMID: 36074259 PMCID: PMC9828447 DOI: 10.1002/anie.202210224] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Indexed: 01/12/2023]
Abstract
Interfacing biological tissues with electronic sensors offers the exciting opportunity to accurately investigate multiple biological processes. Accurate signal collection and application are the foundation of these measurements, but a long-term issue is the signal distortion resulting from the interface gap. The height of the gap is the key characteristic needed to evaluate or model the distortion, but it is difficult to measure. By integrating a pair of nanopores at the electronic sensor plane and measuring the ion conductance between them, we developed a versatile and straightforward strategy to realize the direct cooperative evaluation of the gap height during exocytotic release from adrenal gland tissues. The signaling distortion of this gap has been theoretically evaluated and shows almost no influence on the amperometric recording of exocytosis in a classic "semi-artificial synapse" configuration. This strategy should benefit research concerning various bio/chemical/machine interfaces.
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Affiliation(s)
- Xin‐Wei Zhang
- College of Chemistry and Molecular SciencesWuhan University430072WuhanChina,Department of Chemistry and Molecular BiologyUniversity of Gothenburg41296GothenburgSweden
| | - Amir Hatamie
- Department of Chemistry and Molecular BiologyUniversity of Gothenburg41296GothenburgSweden
| | - Andrew G. Ewing
- Department of Chemistry and Molecular BiologyUniversity of Gothenburg41296GothenburgSweden
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Zhang XW, Hatamie A, Ewing AG. Direct Acquisition of the Gap Height of Biological Tissue‐Electronic Chemical Sensor Interfaces. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202210224] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
| | - Amir Hatamie
- University of Gothenburg: Goteborgs Universitet Chemistry SWEDEN
| | - Andrew G. Ewing
- University of Gothenburg: Goteborgs Universitet Chemistry and Molecular Biology Kemivägen 10 41296 Gothenburg SWEDEN
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He X, Ewing AG. Simultaneous Counting of Molecules in the Halo and Dense-Core of Nanovesicles by Regulating Dynamics of Vesicle Opening. Angew Chem Int Ed Engl 2022; 61:e202116217. [PMID: 35129861 PMCID: PMC9306628 DOI: 10.1002/anie.202116217] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2021] [Indexed: 01/09/2023]
Abstract
We report the discovery that in the presence of chaotropic anions (SCN−) the opening of nanometer biological vesicles at an electrified interface often becomes a two‐step process (around 30 % doublet peaks). We have then used this to independently count molecules in each subvesicular compartment, the halo and protein dense‐core, and the fraction of catecholamine binding to the dense‐core is 68 %. Moreover, we differentiated two distinct populations of large dense‐core vesicles (LDCVs) and quantified their content, which might correspond to immature (43 %) and mature (30 %) LDCVs, to reveal differences in their biogenesis. We speculate this is caused by an increase in the electrostatic attraction between protonated catecholamine and the negatively charged dense‐core following adsorption of SCN−.
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Affiliation(s)
- Xiulan He
- Department of Chemistry and Molecular Biology, University of Gothenburg, Kemivägen 10, 41296, Gothenburg, Sweden
| | - Andrew G Ewing
- Department of Chemistry and Molecular Biology, University of Gothenburg, Kemivägen 10, 41296, Gothenburg, Sweden
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He X, Ewing AG. Simultaneous Counting of Molecules in the Halo and Dense‐Core of Nanovesicles by Regulating Dynamics of Vesicle Opening. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202116217] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Xiulan He
- Department of Chemistry and Molecular Biology University of Gothenburg Kemivägen 10 41296 Gothenburg Sweden
| | - Andrew G. Ewing
- Department of Chemistry and Molecular Biology University of Gothenburg Kemivägen 10 41296 Gothenburg Sweden
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Moon H, Park JH. In Situ Probing Liquid/Liquid Interfacial Kinetics through Single Nanodroplet Electrochemistry. Anal Chem 2021; 93:16915-16921. [PMID: 34860502 DOI: 10.1021/acs.analchem.1c04071] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
In this study, we report the new application of single nanodroplet electrochemistry to in situ monitor the interfacial transfer kinetics of electroactive species across liquid/liquid interface. Interfacial kinetic information is crucial in drug delivery and membrane transport. However, interfacial information has been mainly studied thermodynamically, such as partition coefficient, which could not manifest a speed of transfer. Herein, we measure the phase-transfer kinetic constant via the steady-state electrochemistry of an extracted redox species in a single nanodroplet. The redox species were transferred from the continuous oil phase to the water nanodroplet by partition equilibrium. The transferred redox species are selectively electrolyzed within the droplet when the droplet contacts with an ultramicroelectrode, while the electrochemical reaction of the redox species outside the droplet (i.e., organic solvent) is effectively suppressed by adjusting the electrolyte composition. The redox species in the water droplets can quickly attain a steady state during electrolysis owing to an extensive mass transfer by radial diffusion, and the steady-state current can be analyzed to obtain kinetic information with help from the finite-element method. Finally, a quick calculation method is suggested to estimate the kinetic constant of phase transfer without simulation.
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Affiliation(s)
- Hyeongkwon Moon
- Department of Chemistry, Chungbuk National University, Cheongju 28644, South Korea
| | - Jun Hui Park
- Department of Chemistry, Chungbuk National University, Cheongju 28644, South Korea
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Wang Y, Gu C, Patel BA, Ewing AG. Nano‐analysis Reveals High Fraction of Serotonin Release during Exocytosis from a Gut Epithelium Model Cell. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202108193] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Ying Wang
- Department of Chemistry and Molecular Biology University of Gothenburg Kemivgen 10 41296 Gothenburg Sweden
| | - Chaoyi Gu
- Department of Chemistry and Molecular Biology University of Gothenburg Kemivgen 10 41296 Gothenburg Sweden
| | - Bhavik Anil Patel
- Centre for Stress and Age-Related Disease School of Pharmacy and Biomolecular Sciences University of Brighton Brighton BN2 4GJ UK
| | - Andrew G. Ewing
- Department of Chemistry and Molecular Biology University of Gothenburg Kemivgen 10 41296 Gothenburg Sweden
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Wang Y, Gu C, Patel BA, Ewing AG. Nano-analysis reveals high fraction of serotonin release during exocytosis from a gut epithelium model cell. Angew Chem Int Ed Engl 2021; 60:23552-23556. [PMID: 34363735 PMCID: PMC8597005 DOI: 10.1002/anie.202108193] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2021] [Indexed: 12/02/2022]
Abstract
Electrochemical methods were used to explore the exocytotic nature of serotonin (5‐HT) release in human carcinoid BON cells, an in vitro human enterochromaffin cell model, to understand the mechanisms operating the release of gut‐derived 5‐HT in the intestinal mucosal epithelium. We show that the fractional vesicular 5‐HT release in BON cells is 80 % compared to previous work in pancreatic beta cells (34 %). The fractional release increased from 80 % in control BON cells to 87 % with 5‐HT preincubation and nearly 100 % with the combination of 5‐HT and the 5‐HT4 autoreceptor agonist, cisapride. Thus, partial release is the primary mechanism of exocytosis in BON cells, resulting in a variable amount of the vesicular content being released. Factors that control secretion of 5‐HT from enterochromaffin cells or BON cells are important as partial release provides a mechanism for development of effective therapeutic strategies to treat gastrointestinal diseases.
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Affiliation(s)
- Ying Wang
- University of Gothenburg: Goteborgs Universitet, Chemistry and Molecular Biology, SWEDEN
| | - Chaoyi Gu
- University of Gothenburg: Goteborgs Universitet, Chemistry and Molecular Biology, SWEDEN
| | | | - Andrew G Ewing
- Chalmers Institute of Technology, Chemical and Biological Engineering, Kemivägen 10, 41296, Göteborg, SWEDEN
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