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Anand A, Tseng HC, Chiang HC, Hsu WH, Liao YF, Lu SHA, Tsai SY, Pan CY, Chen YT. Significant Elevation in Potassium Concentration Surrounding Stimulated Excitable Cells Revealed by an Aptamer-Modified Nanowire Transistor. ACS APPLIED BIO MATERIALS 2021; 4:6865-6873. [PMID: 35006986 DOI: 10.1021/acsabm.1c00584] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Recording ion fluctuations surrounding biological cells with a nanoelectronic device offers seamless integration of nanotechnology into living organisms and is essential for understanding cellular activities. The concentration of potassium ion in the extracellular fluid (CK+ex) is a critical determinant of cell membrane potential and must be maintained within an appropriate range. Alteration in CK+ex can affect neuronal excitability, induce heart arrhythmias, and even trigger seizure-like reactions in the brain. Therefore, monitoring local fluctuations in real time provides an early diagnosis of the occurrence of the K+-induced pathophysiological responses. Here, we modified the surface of a silicon nanowire field-effect transistor (SiNW-FET) with K+-specific DNA-aptamers (AptK+) to monitor the real-time variations of CK+ex in primary cultured rat embryonic cortical neurons or human embryonic stem cell-derived cardiomyocytes. The binding affinity of AptK+ to K+, determined by measuring the dissociation constant of the AptK+-K+ complex (Kd = 10.1 ± 0.9 mM), is at least 38-fold higher than other ions (e.g., Na+, Ca2+, and Mg2+). By placing cultured cortical neurons over an AptK+/SiNW-FET device, α-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid (AMPA) stimulation raised the CK+ex dose-dependently to 16 mM when AMPA concentration was >10 μM; this elevation could be significantly suppressed by an AMPA receptor antagonist, 6,7-dinitroquinoxaline-2,3-dione. Likewise, the stimulation of isoproterenol to cardiomyocytes raised the CK+ex to 6-8 mM, with a concomitant increase in the beating rate. This study utilizing a robust nanobiosensor to detect real-time ion fluctuations surrounding excitable cells underlies the importance of ion homeostasis and offers the feasibility of developing an implant device for real-time monitoring.
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Affiliation(s)
- Ankur Anand
- Department of Chemistry, National Taiwan University, Taipei 10617, Taiwan.,Institute of Atomic and Molecular Sciences, Academia Sinica, Taipei 10617, Taiwan
| | - Hui-Chiun Tseng
- Department of Life Science, National Taiwan University, Taipei 10617, Taiwan
| | - Hsu-Cheng Chiang
- Department of Chemistry, National Taiwan University, Taipei 10617, Taiwan
| | - Wan-Hsuan Hsu
- Department of Life Science, National Taiwan University, Taipei 10617, Taiwan
| | - Yi-Fan Liao
- Department of Life Science, National Taiwan University, Taipei 10617, Taiwan.,Institute of Physics, Academia Sinica, Taipei 11529, Taiwan
| | - Serena Huei-An Lu
- Department of Life Science, National Taiwan University, Taipei 10617, Taiwan
| | - Su-Yi Tsai
- Department of Life Science, National Taiwan University, Taipei 10617, Taiwan
| | - Chien-Yuan Pan
- Department of Life Science, National Taiwan University, Taipei 10617, Taiwan
| | - Yit-Tsong Chen
- Department of Chemistry, National Taiwan University, Taipei 10617, Taiwan.,Institute of Atomic and Molecular Sciences, Academia Sinica, Taipei 10617, Taiwan
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2
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Meier SR, Lancaster JL, Fetterhoff D, Kraft RA, Hampson RE, Starobin JM. The relationship between nernst equilibrium variability and the multifractality of interspike intervals in the hippocampus. J Comput Neurosci 2016; 42:167-175. [PMID: 27909842 DOI: 10.1007/s10827-016-0633-5] [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: 05/18/2016] [Revised: 11/14/2016] [Accepted: 11/21/2016] [Indexed: 11/26/2022]
Abstract
Spatiotemporal patterns of action potentials are considered to be closely related to information processing in the brain. Auto-generating neurons contributing to these processing tasks are known to cause multifractal behavior in the inter-spike intervals of the output action potentials. In this paper we define a novel relationship between this multifractality and the adaptive Nernst equilibrium in hippocampal neurons. Using this relationship we are able to differentiate between various drugs at varying dosages. Conventional methods limit their ability to account for cellular charge depletion by not including these adaptive Nernst equilibria. Our results provide a new theoretical approach for measuring the effects which drugs have on single-cell dynamics.
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Affiliation(s)
- Stephen R Meier
- Department of Applied Mathematics and Statistics, State University of New York, Stony Brook, NY, 11794, USA.
| | | | - Dustin Fetterhoff
- Department of Biology II, Ludwig Maximilian University of Munich, Munich, Germany
| | - Robert A Kraft
- Department of Biomedical Engineering, Wake Forest School of Medicine, Winston-Salem, NC, 27109, USA
| | - Robert E Hampson
- Department of Physiology & Pharmacology, Wake Forest School of Medicine, Winston-Salem, NC, 27109, USA
| | - Joseph M Starobin
- Department of Nanoscience, The University of North Carolina, Greensboro, NC, 27401, USA
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3
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Etiévant A, Oosterhof C, Bétry C, Abrial E, Novo-Perez M, Rovera R, Scarna H, Devader C, Mazella J, Wegener G, Sánchez C, Dkhissi-Benyahya O, Gronfier C, Coizet V, Beaulieu J, Blier P, Lucas G, Haddjeri N. Astroglial Control of the Antidepressant-Like Effects of Prefrontal Cortex Deep Brain Stimulation. EBioMedicine 2015; 2:898-908. [PMID: 26425697 PMCID: PMC4563138 DOI: 10.1016/j.ebiom.2015.06.023] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2015] [Revised: 06/22/2015] [Accepted: 06/26/2015] [Indexed: 11/20/2022] Open
Abstract
Although deep brain stimulation (DBS) shows promising efficacy as a therapy for intractable depression, the neurobiological bases underlying its therapeutic action remain largely unknown. The present study was aimed at characterizing the effects of infralimbic prefrontal cortex (IL-PFC) DBS on several pre-clinical markers of the antidepressant-like response and at investigating putative non-neuronal mechanism underlying DBS action. We found that DBS induced an antidepressant-like response that was prevented by IL-PFC neuronal lesion and by adenosine A1 receptor antagonists including caffeine. Moreover, high frequency DBS induced a rapid increase of hippocampal mitosis and reversed the effects of stress on hippocampal synaptic metaplasticity. In addition, DBS increased spontaneous IL-PFC low-frequency oscillations and both raphe 5-HT firing activity and synaptogenesis. Unambiguously, a local glial lesion counteracted all these neurobiological effects of DBS. Further in vivo electrophysiological results revealed that this astrocytic modulation of DBS involved adenosine A1 receptors and K+ buffering system. Finally, a glial lesion within the site of stimulation failed to counteract the beneficial effects of low frequency (30 Hz) DBS. It is proposed that an unaltered neuronal–glial system constitutes a major prerequisite to optimize antidepressant DBS efficacy. It is also suggested that decreasing frequency could heighten antidepressant response of partial responders. The antidepressant effect of prefrontal cortex DBS was prevented by neuronal lesion and adenosine A1 receptor antagonists. DBS rapidly increased hippocampal mitosis, cortical oscillations, raphe 5-HT firing activity and synaptogenesis. Local glial lesions prevented the neurobiological effects of DBS in a frequency-dependent manner. Although deep brain stimulation (DBS) is a promising therapy for patients with treatment-resistant depression, the neurobiological bases underlying its therapeutic action remain largely unknown. Here, we demonstrated that DBS produced a robust antidepressant-like effect that was associated with a fast induction of markers of the antidepressant-like response. Unambiguously, the effects of high-frequency, but not low-frequency, DBS were counteracted by a glial lesion within the site of stimulation. Thus, it is proposed that an unaltered neuronal–glial system constitutes a major prerequisite to optimize antidepressant DBS efficacy. It is also suggested that decreasing frequency of DBS could heighten antidepressant response of partial responders.
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Affiliation(s)
- A. Etiévant
- Stem Cell and Brain Research Institute, INSERM U846, 69500 Bron, France
- Université de Lyon, Université Lyon 1, 69373 Lyon, France
- Department of Psychiatry and Neurosciences, Faculty of Medicine, Laval University–IUSMQ, Québec City, Québec, Canada
| | - C. Oosterhof
- Institute of Mental Health Research, University of Ottawa, Ottawa, Ontario, Canada
| | - C. Bétry
- Stem Cell and Brain Research Institute, INSERM U846, 69500 Bron, France
- Université de Lyon, Université Lyon 1, 69373 Lyon, France
| | - E. Abrial
- Stem Cell and Brain Research Institute, INSERM U846, 69500 Bron, France
- Université de Lyon, Université Lyon 1, 69373 Lyon, France
| | - M. Novo-Perez
- Stem Cell and Brain Research Institute, INSERM U846, 69500 Bron, France
- Université de Lyon, Université Lyon 1, 69373 Lyon, France
| | - R. Rovera
- Stem Cell and Brain Research Institute, INSERM U846, 69500 Bron, France
- Université de Lyon, Université Lyon 1, 69373 Lyon, France
| | - H. Scarna
- Stem Cell and Brain Research Institute, INSERM U846, 69500 Bron, France
- Université de Lyon, Université Lyon 1, 69373 Lyon, France
| | - C. Devader
- Institut de Pharmacologie Moléculaire et Cellulaire, Centre National de la Recherche Scientifique, UMR6097, Université de Nice Sophia Antipolis, 06560 Valbonne, France
| | - J. Mazella
- Institut de Pharmacologie Moléculaire et Cellulaire, Centre National de la Recherche Scientifique, UMR6097, Université de Nice Sophia Antipolis, 06560 Valbonne, France
| | - G. Wegener
- Department of Clinical Medicine, Translational Neuropsychiatry Unit, Aarhus University, Skovagervej 2, DK-8240 Risskov, Denmark
| | - C. Sánchez
- Neuropharmacology, Lundbeck Research USA, Paramus, NJ, USA
| | - O. Dkhissi-Benyahya
- Stem Cell and Brain Research Institute, INSERM U846, 69500 Bron, France
- Université de Lyon, Université Lyon 1, 69373 Lyon, France
| | - C. Gronfier
- Stem Cell and Brain Research Institute, INSERM U846, 69500 Bron, France
- Université de Lyon, Université Lyon 1, 69373 Lyon, France
| | - V. Coizet
- INSERM U836, GIN, Univ. Grenoble Alpes, F-38000 Grenoble, France
| | - J.M. Beaulieu
- Department of Psychiatry and Neurosciences, Faculty of Medicine, Laval University–IUSMQ, Québec City, Québec, Canada
| | - P. Blier
- Institute of Mental Health Research, University of Ottawa, Ottawa, Ontario, Canada
| | - G. Lucas
- Stem Cell and Brain Research Institute, INSERM U846, 69500 Bron, France
- Université de Lyon, Université Lyon 1, 69373 Lyon, France
- Institut François Magendie, INSERM U862, Université de Bordeaux, 33077 Bordeaux, France
| | - N. Haddjeri
- Stem Cell and Brain Research Institute, INSERM U846, 69500 Bron, France
- Université de Lyon, Université Lyon 1, 69373 Lyon, France
- Corresponding author at: Institut Cellule Souche et Cerveau, INSERM U846, Université Lyon 1, 8 avenue Rockefeller, 69373 Lyon Cedex 08, France.
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