Regulation of Atp7a RNA contributes to differentiation-dependent Cu redistribution in skeletal muscle cells.

Autor:	Whitlow TJ; Department of Molecular and Cellular Biosciences, University of Cincinnati College of Medicine, Cincinnati, OH, USA., Zhang Y; Department of Molecular and Cellular Biosciences, University of Cincinnati College of Medicine, Cincinnati, OH, USA., Ferguson N; Department of Molecular and Cellular Biosciences, University of Cincinnati College of Medicine, Cincinnati, OH, USA., Perez AM; Department of Molecular and Cellular Biosciences, University of Cincinnati College of Medicine, Cincinnati, OH, USA., Patel H; Department of Molecular and Cellular Biosciences, University of Cincinnati College of Medicine, Cincinnati, OH, USA., Link-Kemp JA; Department of Molecular and Cellular Biosciences, University of Cincinnati College of Medicine, Cincinnati, OH, USA., Larson EM; Department of Molecular and Cellular Biosciences, University of Cincinnati College of Medicine, Cincinnati, OH, USA., Mezzell AT; Department of Molecular and Cellular Biosciences, University of Cincinnati College of Medicine, Cincinnati, OH, USA., Shanbhag VC; Department of Ophthalmology, Department of Biochemistry, University of Missouri School of Medicine, Columbia, MO, USA., Petris MJ; Department of Ophthalmology, Department of Biochemistry, University of Missouri School of Medicine, Columbia, MO, USA., Vest KE; Department of Molecular and Cellular Biosciences, University of Cincinnati College of Medicine, Cincinnati, OH, USA.
Jazyk:	angličtina
Zdroj:	Metallomics : integrated biometal science [Metallomics] 2023 Jul 10; Vol. 15 (7).
DOI:	10.1093/mtomcs/mfad042
Abstrakt:	Cu (Cu) is essential for several biochemical pathways due to its role as a catalytic cofactor or allosteric regulator of enzymes. Its import and distribution are tightly controlled by transporters and metallochaperones and Cu homeostasis is maintained by balancing Cu uptake and export. Genetic diseases are caused by impaired Cu transporters CTR1, ATP7A, or ATP7B but little is known about the regulatory mechanisms by which these proteins meet the fluctuating demands of Cu in specific tissues. Cu is required for differentiation of skeletal myoblasts to myotubes. Here, we demonstrate that ATP7A is needed for myotube formation and that its increased abundance during differentiation is mediated by stabilization of Atp7a mRNA via the 3' untranslated region. Increased ATP7A levels during differentiation resulted in increased Cu delivery to lysyl oxidase, a secreted cuproenzyme that needed for myotube formation. These studies identify a previously unknown role for Cu in regulating muscle differentiation and have broad implications for understanding Cu-dependent differentiation in other tissues. (© The Author(s) 2023. Published by Oxford University Press.)
Databáze:	MEDLINE
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