Skeletal muscle in health and disease

Skeletal muscle fibres are multinucleated cells that contain postmitotic nuclei (i.e. they are no longer able to divide) and perform muscle contraction. They are formed by fusion of muscle precursor cells, and grow into elongating myofibres by the addition of further precursor cells, called satellit...

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Main Authors: Jennifer Morgan, Terence Partridge
Format: Article
Language:English
Published: The Company of Biologists 2020-02-01
Series:Disease Models & Mechanisms
Subjects:
Online Access:http://dmm.biologists.org/content/13/2/dmm042192
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author Jennifer Morgan
Terence Partridge
author_facet Jennifer Morgan
Terence Partridge
author_sort Jennifer Morgan
collection DOAJ
description Skeletal muscle fibres are multinucleated cells that contain postmitotic nuclei (i.e. they are no longer able to divide) and perform muscle contraction. They are formed by fusion of muscle precursor cells, and grow into elongating myofibres by the addition of further precursor cells, called satellite cells, which are also responsible for regeneration following injury. Skeletal muscle regeneration occurs in most muscular dystrophies in response to necrosis of muscle fibres. However, the complex environment within dystrophic skeletal muscle, which includes inflammatory cells, fibroblasts and fibro-adipogenic cells, together with the genetic background of the in vivo model and the muscle being studied, complicates the interpretation of laboratory studies on muscular dystrophies. Many genes are expressed in satellite cells and in other tissues, which makes it difficult to determine the molecular cause of various types of muscular dystrophies. Here, and in the accompanying poster, we discuss our current knowledge of the cellular mechanisms that govern the growth and regeneration of skeletal muscle, and highlight the defects in satellite cell function that give rise to muscular dystrophies.
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spelling doaj.art-4a48452f1ff7458baefbfabec8c815472022-12-22T00:32:12ZengThe Company of BiologistsDisease Models & Mechanisms1754-84031754-84112020-02-0113210.1242/dmm.042192042192Skeletal muscle in health and diseaseJennifer Morgan0Terence Partridge1 Dubowitz Neuromuscular Centre, UCL Great Ormond Street Institute of Child Health, 30 Guilford Street, London WC1N 1EH, UK Dubowitz Neuromuscular Centre, UCL Great Ormond Street Institute of Child Health, 30 Guilford Street, London WC1N 1EH, UK Skeletal muscle fibres are multinucleated cells that contain postmitotic nuclei (i.e. they are no longer able to divide) and perform muscle contraction. They are formed by fusion of muscle precursor cells, and grow into elongating myofibres by the addition of further precursor cells, called satellite cells, which are also responsible for regeneration following injury. Skeletal muscle regeneration occurs in most muscular dystrophies in response to necrosis of muscle fibres. However, the complex environment within dystrophic skeletal muscle, which includes inflammatory cells, fibroblasts and fibro-adipogenic cells, together with the genetic background of the in vivo model and the muscle being studied, complicates the interpretation of laboratory studies on muscular dystrophies. Many genes are expressed in satellite cells and in other tissues, which makes it difficult to determine the molecular cause of various types of muscular dystrophies. Here, and in the accompanying poster, we discuss our current knowledge of the cellular mechanisms that govern the growth and regeneration of skeletal muscle, and highlight the defects in satellite cell function that give rise to muscular dystrophies.http://dmm.biologists.org/content/13/2/dmm042192muscular dystrophysatellite cellskeletal muscle regeneration
spellingShingle Jennifer Morgan
Terence Partridge
Skeletal muscle in health and disease
Disease Models & Mechanisms
muscular dystrophy
satellite cell
skeletal muscle regeneration
title Skeletal muscle in health and disease
title_full Skeletal muscle in health and disease
title_fullStr Skeletal muscle in health and disease
title_full_unstemmed Skeletal muscle in health and disease
title_short Skeletal muscle in health and disease
title_sort skeletal muscle in health and disease
topic muscular dystrophy
satellite cell
skeletal muscle regeneration
url http://dmm.biologists.org/content/13/2/dmm042192
work_keys_str_mv AT jennifermorgan skeletalmuscleinhealthanddisease
AT terencepartridge skeletalmuscleinhealthanddisease