Cited by 38Amyotrophic Lateral Sclerosis ResearchMuscle Physiology and DisordersIon channel regulation and function

Elucidating the Contribution of Skeletal Muscle Ion Channels to Amyotrophic Lateral Sclerosis in search of new therapeutic options

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Camerino, Giulia Maria, Fonzino, Adriano, Conte, Elena, De Bellis, Michela, Mele, Antonietta, Liantonio, Antonella, Tricarico, Domenico, Tarantino, Nancy +5 more·2019·Scientific Reports

Abstract

The discovery of pathogenetic mechanisms is essential to identify new therapeutic approaches in Amyotrophic Lateral Sclerosis (ALS). Here we investigated the role of the most important ion channels in skeletal muscle of an ALS animal model (MLC/SOD1 G93A) carrying a mutated SOD1 exclusively in this tissue, avoiding motor-neuron involvement. Ion channels are fundamental proteins for muscle function, and also to sustain neuromuscular junction and nerve integrity. By a multivariate statistical analysis, using machine learning algorithms, we identified the discriminant genes in MLC/SOD1 G93A mice. Surprisingly, the expression of ClC-1 chloride channel, present only in skeletal muscle, was reduced. Also, the expression of Protein Kinase-C, known to control ClC-1 activity, was increased, causing its inhibition. The functional characterization confirmed the reduction of ClC-1 activity, leading to hyperexcitability and impaired relaxation. The increased expression of ion channel coupled AMPA-receptor may contribute to sustained depolarization and functional impairment. Also, the decreased expression of irisin, a muscle-secreted peptide protecting brain function, may disturb muscle-nerve connection. Interestingly, the in-vitro application of chelerythrine or acetazolamide, restored ClC-1 activity and sarcolemma hyperexcitability in these mice. These findings show that ion channel function impairment in skeletal muscle may lead to motor-neuron increased vulnerability, and opens the possibility to investigate on new compounds as promising therapy.

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Authors
Camerino, G. M., Fonzino, A., Conte, E., De Bellis, M., Mele, A., Liantonio, A., Tricarico, D., Tarantino, N., Dobrowolny, G., Musarò, A., Desaphy, J.-F., De Luca, A., & Pierno, S.
Affiliations
  • University of Bari Aldo Moro (IT)
  • Italian Institute of Technology (IT)
Corresponding author
Pierno, Sabata
Venue
Scientific Reports
Published
2019-02-28
Volume
9
Issue
1
Pages
3185-3185
ISSN
2045-2322 (ISSN-L)
OpenAlex
W2917057660
Cited by
38
References
58
Citations by year
2026: 4 · 2025: 2 · 2024: 5 · 2023: 3 · 2022: 7 · 2021: 7 · 2020: 7 · 2019: 3
FWCI
4.06
Type
journal article
Language
en
Open access
Locations
  • Scientific Reports (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, other-oa)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • IRIS Research product catalog (Sapienza University of Rome) (submittedVersion, cc-by)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion)
  • CINECA IRIS Institutional Research Information System (University of Bari Aldo Moro) (submittedVersion, cc-by)
Funders
Universita degli Studi di Bari Aldo Moro (FondiAteneo 2015, Es. Fin. Fondi Ateneo 2012)
Topics
  • Health Sciences › Medicine › Neurology › Amyotrophic Lateral Sclerosis Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Muscle Physiology and Disorders
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Ion channel regulation and function
Keywords
amyotrophic lateral sclerosis, ClC-1 chloride channel, SOD1 G93A mice, protein kinase C, AMPA receptors, irisin, muscle hyperexcitability, muscle relaxation, neuromuscular junction, chelerythrine, acetazolamide, therapeutic target
MeSH terms
Superoxide Dismutase-1, Amyotrophic Lateral Sclerosis, Animals, Disease Models, Animal, Fibronectins, Male, Mice, Inbred C57BL, Mice, Transgenic, Receptors, AMPA, Chloride Channels, Muscle, Skeletal, Mice

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