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Lai H, Gao M, Yang H. The potassium channels: Neurobiology and pharmacology of tinnitus. J Neurosci Res 2024; 102:e25281. [PMID: 38284861 DOI: 10.1002/jnr.25281] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2023] [Revised: 10/27/2023] [Accepted: 11/16/2023] [Indexed: 01/30/2024]
Abstract
Tinnitus is a widespread public health issue that imposes a significant social burden. The occurrence and maintenance of tinnitus have been shown to be associated with abnormal neuronal activity in the auditory pathway. Based on this view, neurobiological and pharmacological developments in tinnitus focus on ion channels and synaptic neurotransmitter receptors in neurons in the auditory pathway. With major breakthroughs in the pathophysiology and research methodology of tinnitus in recent years, the role of the largest family of ion channels, potassium ion channels, in modulating the excitability of neurons involved in tinnitus has been increasingly demonstrated. More and more potassium channels involved in the neural mechanism of tinnitus have been discovered, and corresponding drugs have been developed. In this article, we review animal (mouse, rat, hamster, and guinea-pig), human, and genetic studies on the different potassium channels involved in tinnitus, analyze the limitations of current clinical research on potassium channels, and propose future prospects. The aim of this review is to promote the understanding of the role of potassium ion channels in tinnitus and to advance the development of drugs targeting potassium ion channels for tinnitus.
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Affiliation(s)
- Haohong Lai
- Department of Otolaryngology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Minqian Gao
- Department of Otolaryngology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
- Department of Hearing and Speech-Language Science, Guangzhou Xinhua University, Guangzhou, China
| | - Haidi Yang
- Department of Otolaryngology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
- Department of Hearing and Speech-Language Science, Guangzhou Xinhua University, Guangzhou, China
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Manickam R, Virzi J, Potti A, Cheng F, Russ DW, Tipparaju SM. Genetic deletion of Kvβ2 (AKR6) causes loss of muscle function and increased inflammation in mice. FRONTIERS IN AGING 2023; 4:1175510. [PMID: 37377453 PMCID: PMC10292803 DOI: 10.3389/fragi.2023.1175510] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Accepted: 05/25/2023] [Indexed: 06/29/2023]
Abstract
The voltage-gated potassium channels (Kv) are complex ion channels with distinct roles in neurotransmission, electrical conductivity of the heart, and smooth and striated muscle functions. Previously, we demonstrated that deletion of Kvβ2 in mice results in decreased Pax7 protein levels, hindlimb muscles and body weights, and fiber type switching. In the present study, we tested the hypothesis that Kvβ2 regulates skeletal muscle function in mice. The young and old Kvβ2 knockout (KO) and wildtype (WT) mice were utilized to test the aging phenotype and skeletal muscle function. Consistent with our previous finding, we found a significant reduction in hindlimb skeletal muscles mass and body weight in young Kvβ2 KO mice, which was also significantly reduced in old Kvβ2 KO mice compared with age-matched WT mice. Forelimb grip strength, and the hindleg extensor digitorum longus (EDL) muscles force-frequency relations were significantly decreased in young and old Kvβ2 KO mice compared to age-matched WT mice. Analysis of transmission electron microscopy images of EDL muscles in young mice revealed a significant reduction in the sarcomere length for Kvβ2 KO vs. WT. Hematoxylin and eosin-stained tibialis anterior muscles cryosections displayed a significant decrease in the number of medium (2,000-4,000 µm2) and largest (>4,000 µm2) myofibers area in young Kvβ2 KO vs. WT mice. We also found a significant increase in fibrotic tissue area in young Kvβ2 KO mice compared with age-matched WT mice. Analysis of RNA Seq data of the gastrocnemius muscles (GAS) identified significant increase in genes involved in skeletal muscle development, proliferation and cell fate determination, atrophy, energy metabolism, muscle plasticity, inflammation, and a decrease in circadian core clock genes in young Kvβ2 KO vs. WT mice. Several genes were significantly upregulated (384 genes) and downregulated (40 genes) in young Kvβ2 KO mice compared to age-matched WT mice. Further, RT-qPCR analysis of the GAS muscles displayed a significant increase in pro-inflammatory marker Il6 expression in young Kvβ2 KO mice compared to age-matched WT mice. Overall, the present study shows that deletion of Kvβ2 leads to decreased muscles strength and increased inflammation.
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Affiliation(s)
- Ravikumar Manickam
- Department of Pharmaceutical Sciences, Taneja College of Pharmacy, University of South Florida, Tampa, FL, United States
| | - Jazmine Virzi
- Department of Pharmaceutical Sciences, Taneja College of Pharmacy, University of South Florida, Tampa, FL, United States
| | - Anish Potti
- Department of Pharmaceutical Sciences, Taneja College of Pharmacy, University of South Florida, Tampa, FL, United States
| | - Feng Cheng
- Department of Pharmaceutical Sciences, Taneja College of Pharmacy, University of South Florida, Tampa, FL, United States
| | - David W. Russ
- School of Physical Therapy and Rehabilitation Sciences, Morsani College of Medicine, University of South Florida, Tampa, FL, United States
| | - Srinivas M. Tipparaju
- Department of Pharmaceutical Sciences, Taneja College of Pharmacy, University of South Florida, Tampa, FL, United States
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Pan T, Shen M, Shi J, Ning J, Su F, Liao J, Tian Y. Intracellular potassium ion fluorescent nanoprobes for functional analysis of hERG channel via bioimaging. SENSORS AND ACTUATORS B: CHEMICAL 2021; 345:130450. [DOI: 10.1016/j.snb.2021.130450] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/12/2023]
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Shi J, Shi S, Shi S, Jia Q, Yuan G, Chu Y, Wang H, Hu Y, Cui H. Bibliometric analysis of potassium channel research. Channels (Austin) 2021; 14:18-27. [PMID: 31842669 PMCID: PMC7039634 DOI: 10.1080/19336950.2019.1705055] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
ABSTRACT Objective: To explore the research status, hotspots, and trends in research on potassium channel. Methods: The Web of Science core collection database was used as the data source and the visual analysis software Citespace5.4 R3 was used to visualize the studies of potassium channel in the past 10 years. The national/institutional distribution, journal distribution, authors, and related research were discussed. Results 17,392 articles were obtained. The USA, Peoples R China, Germany, England, and Japan were the main countries in the field and University of California was the most important institution for the study of potassium channel. PLoS One was the most productive journal and proceedings of the national academy of sciences of the united states of america was the most frequently cited journal in potassium channel research. The author with the highest number was Colin G Nichols and the author with the highest co- cited frequency was Sanguinetti MC. The three hot spots of potassium channel research were gene expression, Ca2+ activated k+ channel and nitric oxide. The top four research frontiers of potassium channel research were bk channel,blood pressure,oxidative stress and electrophysiology. Conclusion The study provides a perspective for understanding the potassium channel research and provides valuable information for potassium channel researchers to identify potential collaborators, partner institutions, hot topics and research frontiers.
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Affiliation(s)
- Jingjing Shi
- Guanganmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Shuqing Shi
- Graduate School of Beijing University of Chinese Medicine, Beijing, China
| | - Shuai Shi
- Guanganmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Qiulei Jia
- Graduate School of Beijing University of Chinese Medicine, Beijing, China
| | - Guozhen Yuan
- Guanganmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Yuguang Chu
- Guanganmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Huan Wang
- Guanganmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Yuanhui Hu
- Guanganmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Hanming Cui
- Guanganmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
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Cheng P, Qiu Z, Du Y. Potassium channels and autism spectrum disorder: An overview. Int J Dev Neurosci 2021; 81:479-491. [PMID: 34008235 DOI: 10.1002/jdn.10123] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Revised: 05/08/2021] [Accepted: 05/11/2021] [Indexed: 11/07/2022] Open
Abstract
Autism spectrum disorder (ASD) comprises a group of neurodevelopmental disorders characterized by impaired social interaction and communication, and restricted, repetitive patterns of behaviors, interests, or activities. It had been demonstrated that potassium channels played a key role in regulating neuronal excitability, which was closely associated with neurological diseases including epilepsy, ataxia, myoclonus, and psychiatric disorders. In recent years, a growing body of evidence from whole-genome sequencing and whole-exome sequencing had identified several ASD susceptibility genes of potassium channels in ASD subjects. Genetically dysfunction of potassium channels may be involved in altered neuronal excitability and abnormal brain function in the pathogenesis of ASD. This review summarizes current findings on the features of ASD-risk genes (KCND2, KCNQ2, KCNQ3, KCNH5, KCNJ2, KCNJ10, and KCNMA1) and further expatiate their potential role in the pathogenicity of ASD.
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Affiliation(s)
- Peipei Cheng
- Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Zilong Qiu
- Institute of Neuroscience, State Key Laboratory of Neuroscience, Key Laboratory of Primate Neurobiology, Center for Excellence in Brain Science and Intelligence Technology, Chinese Academy of Sciences, Shanghai, China.,Shanghai Center for Brain Science and Brain-Inspired Intelligence Technology, Shanghai, China
| | - Yasong Du
- Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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Liu J, Qu C, Han C, Chen MM, An LJ, Zou W. Potassium channels and their role in glioma: A mini review. Mol Membr Biol 2020; 35:76-85. [PMID: 32067536 DOI: 10.1080/09687688.2020.1729428] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
K+ channels regulate a multitude of biological processes and play important roles in a variety of diseases by controlling potassium flow across cell membranes. They are widely expressed in the central and peripheral nervous system. As a malignant tumor derived from nerve epithelium, glioma has the characteristics of high incidence, high recurrence rate, high mortality rate, and low cure rate. Since glioma cells show invasive growth, current surgical methods cannot completely remove tumors. Adjuvant chemotherapy is still needed after surgery. Because the blood-brain barrier and other factors lead to a lower effective concentration of chemotherapeutic drugs in the tumor, the recurrence rate of residual lesions is extremely high. Therefore, new therapeutic methods are needed. Numerous studies have shown that different K+ channel subtypes are differentially expressed in glioma cells and are involved in the regulation of the cell cycle of glioma cells to arrest them at different stages of the cell cycle. Increasing evidence suggests that K+ channels express in glioma cells and regulate glioma cell behaviors such as cell cycle, proliferation and apoptosis. This review article aims to summarize the current knowledge on the function of K+ channels in glioma, suggests K+ channels participating in the development of glioma.
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Affiliation(s)
- Jia Liu
- School of Life Science and Biotechnology, Faculty of Chemical, Environmental and Biological Science, Technology, Dalian University of Technology, Dalian, China.,College of Life Science, Liaoning Normal University, Dalian, China
| | - Chao Qu
- College of Life Science, Liaoning Normal University, Dalian, China
| | - Chao Han
- Regenerative Medicine Center, First Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Meng-Meng Chen
- Company of Qingdao Re-Store Life Sciences, Qingdao, China
| | - Li-Jia An
- School of Life Science and Biotechnology, Faculty of Chemical, Environmental and Biological Science, Technology, Dalian University of Technology, Dalian, China
| | - Wei Zou
- College of Life Science, Liaoning Normal University, Dalian, China.,Company of Qingdao Re-Store Life Sciences, Qingdao, China
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Schewe M, Sun H, Mert Ü, Mackenzie A, Pike ACW, Schulz F, Constantin C, Vowinkel KS, Conrad LJ, Kiper AK, Gonzalez W, Musinszki M, Tegtmeier M, Pryde DC, Belabed H, Nazare M, de Groot BL, Decher N, Fakler B, Carpenter EP, Tucker SJ, Baukrowitz T. A pharmacological master key mechanism that unlocks the selectivity filter gate in K + channels. Science 2019; 363:875-880. [PMID: 30792303 DOI: 10.1126/science.aav0569] [Citation(s) in RCA: 74] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2018] [Accepted: 01/28/2019] [Indexed: 12/13/2022]
Abstract
Potassium (K+) channels have been evolutionarily tuned for activation by diverse biological stimuli, and pharmacological activation is thought to target these specific gating mechanisms. Here we report a class of negatively charged activators (NCAs) that bypass the specific mechanisms but act as master keys to open K+ channels gated at their selectivity filter (SF), including many two-pore domain K+ (K2P) channels, voltage-gated hERG (human ether-à-go-go-related gene) channels and calcium (Ca2+)-activated big-conductance potassium (BK)-type channels. Functional analysis, x-ray crystallography, and molecular dynamics simulations revealed that the NCAs bind to similar sites below the SF, increase pore and SF K+ occupancy, and open the filter gate. These results uncover an unrecognized polypharmacology among K+ channel activators and highlight a filter gating machinery that is conserved across different families of K+ channels with implications for rational drug design.
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Affiliation(s)
- Marcus Schewe
- Institute of Physiology, Christian-Albrechts University of Kiel, 24118 Kiel, Germany.
| | - Han Sun
- Leibniz-Forschungsinstitut für Molekulare Pharmakologie (FMP), Department of Structural Biology, 13125 Berlin, Germany
| | - Ümit Mert
- Institute of Physiology, Christian-Albrechts University of Kiel, 24118 Kiel, Germany
| | - Alexandra Mackenzie
- Structural Genomics Consortium, University of Oxford, Oxford OX3 7DQ, UK.,OXION Initiative in Ion Channels and Disease, University of Oxford, Oxford OX1 3PN, UK.,Clarendon Laboratory, Department of Physics, University of Oxford, Oxford OX1 3PU, UK
| | - Ashley C W Pike
- Structural Genomics Consortium, University of Oxford, Oxford OX3 7DQ, UK
| | - Friederike Schulz
- Institute of Physiology, Christian-Albrechts University of Kiel, 24118 Kiel, Germany
| | - Cristina Constantin
- Institute of Physiology II, Albert-Ludwigs University of Freiburg, 79104 Freiburg, Germany.,Centers for Biological Signaling Studies CIBSS and BIOSS, 79104 Freiburg, Germany
| | - Kirsty S Vowinkel
- Institute of Physiology and Pathophysiology, Vegetative Physiology, Philipps-University of Marburg, 35037 Marburg, Germany
| | - Linus J Conrad
- OXION Initiative in Ion Channels and Disease, University of Oxford, Oxford OX1 3PN, UK.,Clarendon Laboratory, Department of Physics, University of Oxford, Oxford OX1 3PU, UK
| | - Aytug K Kiper
- Institute of Physiology and Pathophysiology, Vegetative Physiology, Philipps-University of Marburg, 35037 Marburg, Germany
| | - Wendy Gonzalez
- Centro de Bioinformatica y Simulacion Molecular, Universidad de Talca, 3465548 Talca, Chile.,Millennium Nucleus of Ion Channels-Associated Diseases (MiNICAD), Universidad de Talca, 3465548 Talca, Chile
| | - Marianne Musinszki
- Institute of Physiology, Christian-Albrechts University of Kiel, 24118 Kiel, Germany
| | - Marie Tegtmeier
- Institute of Physiology, Christian-Albrechts University of Kiel, 24118 Kiel, Germany
| | - David C Pryde
- Pfizer Worldwide Medicinal Chemistry, Neuroscience and Pain Research Unit, Portway Building, Granta Park, Great Abington, Cambridgeshire CB21 6GS, UK
| | - Hassane Belabed
- Leibniz-Forschungsinstitut für Molekulare Pharmakologie (FMP), Department of Medicinal Chemistry, 13125 Berlin, Germany
| | - Marc Nazare
- Leibniz-Forschungsinstitut für Molekulare Pharmakologie (FMP), Department of Medicinal Chemistry, 13125 Berlin, Germany
| | - Bert L de Groot
- Computational Biomolecular Dynamics Group, Max Planck Institute for Biophysical Chemistry, 37077 Göttingen, Germany
| | - Niels Decher
- Institute of Physiology and Pathophysiology, Vegetative Physiology, Philipps-University of Marburg, 35037 Marburg, Germany
| | - Bernd Fakler
- Institute of Physiology II, Albert-Ludwigs University of Freiburg, 79104 Freiburg, Germany.,Centers for Biological Signaling Studies CIBSS and BIOSS, 79104 Freiburg, Germany
| | - Elisabeth P Carpenter
- Structural Genomics Consortium, University of Oxford, Oxford OX3 7DQ, UK.,OXION Initiative in Ion Channels and Disease, University of Oxford, Oxford OX1 3PN, UK
| | - Stephen J Tucker
- OXION Initiative in Ion Channels and Disease, University of Oxford, Oxford OX1 3PN, UK.,Clarendon Laboratory, Department of Physics, University of Oxford, Oxford OX1 3PU, UK
| | - Thomas Baukrowitz
- Institute of Physiology, Christian-Albrechts University of Kiel, 24118 Kiel, Germany.
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