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Neural cell integration into 3D bioprinted skeletal muscle constructs accelerates restoration of muscle function
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Neural cell integration into 3D bioprinted skeletal muscle constructs accelerates restoration of muscle function
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Journal Article
Neural cell integration into 3D bioprinted skeletal muscle constructs accelerates restoration of muscle function
2020
Overview
A bioengineered skeletal muscle construct that mimics structural and functional characteristics of native skeletal muscle is a promising therapeutic option to treat extensive muscle defect injuries. We previously showed that bioprinted human skeletal muscle constructs were able to form multi-layered bundles with aligned myofibers. In this study, we investigate the effects of neural cell integration into the bioprinted skeletal muscle construct to accelerate functional muscle regeneration in vivo. Neural input into this bioprinted skeletal muscle construct shows the improvement of myofiber formation, long-term survival, and neuromuscular junction formation in vitro. More importantly, the bioprinted constructs with neural cell integration facilitate rapid innervation and mature into organized muscle tissue that restores normal muscle weight and function in a rodent model of muscle defect injury. These results suggest that the 3D bioprinted human neural-skeletal muscle constructs can be rapidly integrated with the host neural network, resulting in accelerated muscle function restoration.
3D bioprinting of skeletal muscle using primary human muscle progenitor cells results in correct muscle architecture, but functional restoration in rodent models is limited. Here the authors include human neural stem cells into bioprinted skeletal muscle and observe improved architecture and function in vivo.
Publisher
Nature Publishing Group UK,Nature Publishing Group,Nature Portfolio
Subject
/ Animals
/ Biomimetic Materials - chemistry
/ Biomimetic Materials - therapeutic use
/ Cell Differentiation - physiology
/ Cell Proliferation - physiology
/ Guided Tissue Regeneration - methods
/ Humanities and Social Sciences
/ Humans
/ Male
/ Muscle, Skeletal - physiology
/ Muscles
/ Muscular Diseases - physiopathology
/ Myoblasts, Skeletal - physiology
/ Neuromuscular Junction - cytology
/ Neuromuscular Junction - physiology
/ Rats
/ Rodents
/ Science
/ Structure-function relationships
/ Survival
