Transferrin receptor 1 plays an important role in muscle development and denervation-induced muscular atrophy
Ying Li
Juan-Xian Cheng
Hai-Hong Yang
Li-Ping Chen
Feng-Jiao Liu
Yan Wu
Ming Fan
Hai-Tao Wu
摘要：Previous studies demonstrate an accumulation of transferrin and transferrin receptor 1 (TfR1) in regenerating peripheral nerves. However, the expression and function of transferrin and TfR1 in the denervated skeletal muscle remain poorly understood. In this study, a mouse model of denervation was produced by complete tear of the left brachial plexus nerve. RNA-sequencing revealed that transferrin expression in the denervated skeletal muscle was upregulated, while TfR1 expression was downregulated. We also investigated the function of TfR1 during development and in adult skeletal muscles in mice with inducible deletion or loss of TfR1. The ablation of TfR1 in skeletal muscle in early development caused severe muscular atrophy and early death. In comparison, deletion of TfR1 in adult skeletal muscles did not affect survival or glucose metabolism, but caused skeletal muscle atrophy and motor functional impairment, similar to the muscular atrophy phenotype observed after denervation. These findings suggest that TfR1 plays an important role in muscle development and denervation-induced muscular atrophy. This study was approved by the Institutional Animal Care and Use Committee of Beijing Institute of Basic Medical Sciences, China (approval No. SYXK 2017-C023) on June 1, 2018.
机标关键词：
分类号：R446(诊断学)R746(神经病学与精神病学)Q445(运动器官生理学)
资助基金：Z181100001518001(to HTW))Z181100001518001(Z161100000216154(to HTW)
论文发表日期：2021-07-28
在线出版日期：2025-08-15（本平台首次上网日期，不代表文献的发表时间）
页数：9( 1308-1316 )
英文信息