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The Roles of Ion Channels and Transporters in Intracellular Signaling

A special issue of International Journal of Molecular Sciences (ISSN 1422-0067). This special issue belongs to the section "Biochemistry".

Deadline for manuscript submissions: closed (10 July 2023) | Viewed by 6698

Special Issue Editors


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Guest Editor
Medical School, College of Medicine and Health, Univerity of Exeter, Exeter EX4 4PS, UK
Interests: signaling transduction; neurobiochemistry; chloride homeostasis; neurodevelopmental disorders; neurodegeneration
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Co-Guest Editor
Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200000, China
Interests: kinase Inhibitors; kinase non-catalytic function discovery; small molecule modulation

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Co-Guest Editor
School of Pharmacy, Jinan University, Guangzhou 510000, China
Interests: activity-based proteome profiling (ABPP)

Special Issue Information

Dear Colleagues,

Ion channels and transporters, found in all cells, are transmembrane proteins that enable the passive flow of ions both in and out of cells or cellular organelles, following their electrochemical gradients. Proper maintenance of ion channels and transporters is critical for a range of cellular processes, such as signal transduction, neurotransmitter release, nerve impulses, muscle contraction, hormone secretion, volume regulation, growth, motility, apoptosis, and ion and water homeostasis. Dysfunction of ion channels or transporters may result in diseases of the nervous system (e.g., epilepsy), the cardiovascular system (e.g., Brugada syndrome), the respiratory system (e.g., cystic fibrosis), the endocrine system (e.g., neonatal diabetes mellitus), the urinary system (e.g., Bartter syndrome), and the immune system (e.g., Isaac syndrome).

This Special Issue welcomes the submission of original research and review articles that shed light on the importance of ion channels or transporters and the signaling pathways involved in the pathophysiology of human diseases and suggest new strategies for treatment.

Dr. Jinwei Zhang
Dr. Zhen Wang
Prof. Dr. Zhengqiu Li
Guest Editors

Manuscript Submission Information

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Keywords

  • ion channel
  • ion transporter
  • signal transduction
  • mechanism
  • regulation
  • human disease
  • treatment
  • drug discovery

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Published Papers (2 papers)

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Research

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11 pages, 4550 KiB  
Article
C Type Natriuretic Peptide Receptor Activation Inhibits Sodium Channel Activity in Human Aortic Endothelial Cells by Activating the Diacylglycerol-Protein Kinase C Pathway
by Ling Yu, Mohammad-Zaman Nouri, Lauren P. Liu, Niharika Bala, Nancy D. Denslow, John F. LaDisa, Jr. and Abdel A. Alli
Int. J. Mol. Sci. 2022, 23(22), 13959; https://doi.org/10.3390/ijms232213959 - 12 Nov 2022
Cited by 3 | Viewed by 2003
Abstract
The C-type natriuretic peptide receptor (NPRC) is expressed in many cell types and binds all natriuretic peptides with high affinity. Ligand binding results in the activation or inhibition of various intracellular signaling pathways. Although NPRC ligand binding has been shown to regulate various [...] Read more.
The C-type natriuretic peptide receptor (NPRC) is expressed in many cell types and binds all natriuretic peptides with high affinity. Ligand binding results in the activation or inhibition of various intracellular signaling pathways. Although NPRC ligand binding has been shown to regulate various ion channels, the regulation of endothelial sodium channel (EnNaC) activity by NPRC activation has not been studied. The objective of this study was to investigate mechanisms of EnNaC regulation associated with NPRC activation in human aortic endothelial cells (hAoEC). EnNaC protein expression and activity was attenuated after treating hAoEC with the NPRC agonist cANF compared to vehicle, as demonstrated by Western blotting and patch clamping studies, respectively. NPRC knockdown studies using siRNA’s corroborated the specificity of EnNaC regulation by NPRC activation mediated by ligand binding. The concentration of multiple diacylglycerols (DAG) and the activity of protein kinase C (PKC) was augmented after treating hAoEC with cANF compared to vehicle, suggesting EnNaC activity is down-regulated upon NPRC ligand binding in a DAG-PKC dependent manner. The reciprocal cross-talk between NPRC activation and EnNaC inhibition represents a feedback mechanism that presumably is involved in the regulation of endothelial function and aortic stiffness. Full article
(This article belongs to the Special Issue The Roles of Ion Channels and Transporters in Intracellular Signaling)
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Review

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26 pages, 674 KiB  
Review
The Role of Sperm Membrane Potential and Ion Channels in Regulating Sperm Function
by Francisco M. Pinto, Ainize Odriozola, Luz Candenas and Nerea Subirán
Int. J. Mol. Sci. 2023, 24(8), 6995; https://doi.org/10.3390/ijms24086995 - 10 Apr 2023
Cited by 7 | Viewed by 3548
Abstract
During the last seventy years, studies on mammalian sperm cells have demonstrated the essential role of capacitation, hyperactivation and the acrosome reaction in the acquisition of fertilization ability. These studies revealed the important biochemical and physiological changes that sperm undergo in their travel [...] Read more.
During the last seventy years, studies on mammalian sperm cells have demonstrated the essential role of capacitation, hyperactivation and the acrosome reaction in the acquisition of fertilization ability. These studies revealed the important biochemical and physiological changes that sperm undergo in their travel throughout the female genital tract, including changes in membrane fluidity, the activation of soluble adenylate cyclase, increases in intracellular pH and Ca2+ and the development of motility. Sperm are highly polarized cells, with a resting membrane potential of about −40 mV, which must rapidly adapt to the ionic changes occurring through the sperm membrane. This review summarizes the current knowledge about the relationship between variations in the sperm potential membrane, including depolarization and hyperpolarization, and their correlation with changes in sperm motility and capacitation to further lead to the acrosome reaction, a calcium-dependent exocytosis process. We also review the functionality of different ion channels that are present in spermatozoa in order to understand their association with human infertility. Full article
(This article belongs to the Special Issue The Roles of Ion Channels and Transporters in Intracellular Signaling)
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