Satellite Cells in Muscular Dystrophy - Lost in Polarity

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• 作者：Natasha C. Chang¹ ; ² ; ³ ; Fabien P. Chevalier¹ ; ² ; ³ ; Michael A. Rudnicki¹ ; ² ; ^{mrudnicki@ohri.ca" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Duchenne muscular dystrophy ; dystrophin ; Mark2 ; Par1b ; Pard3 ; satellite cells ; regenerative myogenesis ; stem cell polarity ; asymmetric division
• 刊名：Trends in Molecular Medicine
• 出版年：2016
• 出版时间：June 2016
• 年：2016
• 卷：22
• 期：6
• 页码：479-496
• 全文大小：3480 K

文摘

Recent findings employing the mdx mouse model for Duchenne muscular dystrophy (DMD) have revealed that muscle satellite stem cells play a direct role in contributing to disease etiology and progression of DMD, the most common and severe form of muscular dystrophy. Lack of dystrophin expression in DMD has critical consequences in satellite cells including an inability to establish cell polarity, abrogation of asymmetric satellite stem-cell divisions, and failure to enter the myogenic program. Thus, muscle wasting in dystrophic mice is not only caused by myofiber fragility but is exacerbated by intrinsic satellite cell dysfunction leading to impaired regeneration. Despite intense research and clinical efforts, there is still no effective cure for DMD. In this review we highlight recent research advances in DMD and discuss the current state of treatment and, importantly, how we can incorporate satellite cell-targeted therapeutic strategies to correct satellite cell dysfunction in DMD.