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  • Title: Expression of chloride channel 1 mRNA in cultured myogenic cells: a marker of myotube maturation.
    Author: Bardouille C, Vullhorst D, Jockusch H.
    Journal: FEBS Lett; 1996 Nov 04; 396(2-3):177-80. PubMed ID: 8914983.
    Abstract:
    The chloride channel CIC-1 is required to maintain a normal excitability of mature muscle fibers; its blockade leads to hyperexcitability, the hallmark of the disease myotonia. In mouse and rat myotubes, representing the embryonic stage of muscle, CIC-1 mRNA is not detectable by Northern blotting. From neonatal to adult, CIC-1 expression increases at least fourfold. Using RT-PCR and hybridization on cultured myotubes we found CIC-1 mRNA at a level of 0.4-1.1% of that in mature mouse muscle, and < or = 0.01% in myoblasts, at stages when desmin mRNA levels are already high. The level of CIC-1 mRNA is thus a sensitive and specific indicator of the maturation of skeletal muscle cells.
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