Abstract:
: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.
journal_name
Neural Regen Resjournal_title
Neural regeneration researchauthors
Li Y,Cheng JX,Yang HH,Chen LP,Liu FJ,Wu Y,Fan M,Wu HTdoi
10.4103/1673-5374.301024subject
Has Abstractpub_date
2021-07-01 00:00:00pages
1308-1316issue
7eissn
1673-5374issn
1876-7958pii
NeuralRegenRes_2021_16_7_1308_301024journal_volume
16pub_type
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