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Article Dans Une Revue Acta Physiologica Année : 2019

O-GlcNAcylation as a regulator of the functional and structural properties of the sarcomere in skeletal muscle: an update review.

Résumé

Although the O-GlcNAcylation process was discovered in 1984, its potential role in the physiology and physiopathology of skeletal muscle only emerged 20 years later. An increasing number of publications strongly support a key role of O-GlcNAcylation in the modulation of important cellular processes which are essential for skeletal muscle functions. Indeed, over a thousand of O-GlcNAcylated proteins have been identified within skeletal muscle since 2004, which belong to various classes of proteins, including sarcomeric proteins. In this review, we focused on these myofibrillar proteins, including contractile and structural proteins. Because of the modification of motor and regulatory proteins, the regulatory myosin light chain (MLC2) is related to several reports that support a key role of O-GlcNAcylation in the fine modulation of calcium activation parameters of skeletal muscle fibres, depending on muscle phenotype and muscle work. In addition, another key function of O-GlcNAcylation has recently emerged in the regulation of organization and reorganization of the sarcomere. Altogether, this data support a key role of O-GlcNAcylation in the homeostasis of sarcomeric cytoskeleton, known to be disturbed in many related muscle disorders.
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Dates et versions

hal-02539522 , version 1 (10-04-2020)

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Matthias Lambert, Charlotte Claeyssen, Bruno Bastide, Caroline Cieniewski. O-GlcNAcylation as a regulator of the functional and structural properties of the sarcomere in skeletal muscle: an update review.. Acta Physiologica, 2019, 228 (1), pp.e13301. ⟨10.1111/apha.13301⟩. ⟨hal-02539522⟩
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