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Boulinguiez, Alexis; Duhem, Christian; Mayeuf-Louchart, Alicia; Pourcet, Benoit; Sebti, Yasmine; Kondratska, Kateryna; Montel, Valérie; Delhaye, Stéphane; Thorel, Quentin; Beauchamp, Justine; Hebras, Aurore; Gimenez, Marion; Couvelaere, Marie; Zecchin, Mathilde; Ferri, Lise; Prevarskaya, Natalia; Forand, Anne; Gentil, Christel; Ohana, Jessica; Piétri-Rouxel, France; Bastide, Bruno; Staels, Bart; Duez, Helene; Lancel, Steve
JCI insight, 09/2022, Letnik: 7, Številka: 17Journal Article
The sarcoplasmic reticulum (SR) plays an important role in calcium homeostasis. SR calcium mishandling is described in pathological conditions, such as myopathies. Here, we investigated whether the nuclear receptor subfamily 1 group D member (NR1D1, also called REV-ERBα) regulates skeletal muscle SR calcium homeostasis. Our data demonstrate that NR1D1 deficiency in mice impaired sarco/endoplasmic reticulum calcium ATPase-dependent (SERCA-dependent) SR calcium uptake. NR1D1 acts on calcium homeostasis by repressing the SERCA inhibitor myoregulin through direct binding to its promoter. Restoration of myoregulin counteracted the effects of NR1D1 overexpression on SR calcium content. Interestingly, myoblasts from patients with Duchenne muscular dystrophy displayed lower NR1D1 expression, whereas pharmacological NR1D1 activation ameliorated SR calcium homeostasis and improved muscle structure and function in dystrophic mdx/Utr+/- mice. Our findings demonstrate that NR1D1 regulates muscle SR calcium homeostasis, pointing to its therapeutic potential for mitigating myopathy.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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Vir: Osebne bibliografije
in: SICRIS
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