Volume 109, Issue 3 pp. 289-299
SOCIETY FOR BIOMATERIALS

Harnessing nerve–muscle cell interactions for biomaterials-based skeletal muscle regeneration

Naagarajan Narayanan

Naagarajan Narayanan

Department of Agricultural and Biological Engineering, Purdue University, West Lafayette, Indiana, USA

Bindley Bioscience Center, Purdue University, West Lafayette, Indiana, USA

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Paul Lengemann

Paul Lengemann

Department of Agricultural and Biological Engineering, Purdue University, West Lafayette, Indiana, USA

Bindley Bioscience Center, Purdue University, West Lafayette, Indiana, USA

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Kun Ho Kim

Kun Ho Kim

Department of Animal Science, Purdue University, West Lafayette, Indiana, USA

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Liangju Kuang

Liangju Kuang

Department of Agricultural and Biological Engineering, Purdue University, West Lafayette, Indiana, USA

Bindley Bioscience Center, Purdue University, West Lafayette, Indiana, USA

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Tiago Sobreira

Tiago Sobreira

Bindley Bioscience Center, Purdue University, West Lafayette, Indiana, USA

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Victoria Hedrick

Victoria Hedrick

Bindley Bioscience Center, Purdue University, West Lafayette, Indiana, USA

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Uma K. Aryal

Uma K. Aryal

Bindley Bioscience Center, Purdue University, West Lafayette, Indiana, USA

Department of Comparative Pathobiology, Purdue University, West Lafayette, Indiana, USA

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Shihuan Kuang

Shihuan Kuang

Department of Animal Science, Purdue University, West Lafayette, Indiana, USA

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Meng Deng

Corresponding Author

Meng Deng

Department of Agricultural and Biological Engineering, Purdue University, West Lafayette, Indiana, USA

Bindley Bioscience Center, Purdue University, West Lafayette, Indiana, USA

School of Materials Engineering, Purdue University, West Lafayette, Indiana, USA

Weldon School of Biomedical Engineering, Purdue University, West Lafayette, Indiana, USA

Correspondence

Meng Deng, Department of Agricultural and Biological Engineering, School of Materials Engineering, Weldon School of Biomedical Engineering, Bindley Bioscience Center, Purdue University, West Lafayette, IN 47907-2093.

Email: [email protected]

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First published: 03 June 2020
Citations: 11

Funding information: National Institutes of Health, Grant/Award Number: R03AR068108; Purdue Startup Package

Abstract

Nerve cells secrete neurotrophic factors that play a critical role in neuronal survival, proliferation, and regeneration. However, their role in regulating myoblast behavior and skeletal muscle repair remains largely unexplored. In the present study, we investigated the effects of PC12 secreted signaling factors in modulating C2C12 myoblast behavior under physiologically relevant conditions. We showed that PC12 conditioned media modulated myoblast proliferation and differentiation in both 2D culture and 3D aligned electrospun fiber scaffold system in a dose-dependent manner. We further developed a biomimetic, tunable hydrogel consisting of hyaluronic acid, chondroitin sulfate, and polyethylene glycol as a 3D matrix encapsulating PC12 cells. The hydrogel-encapsulated PC12 cells promoted survival and proliferation of myoblasts in co-culture. Further proteomics analysis identified a total of 2,088 proteins from the secretome of the encapsulated PC12 cells and revealed the biological role and overlapping functions of nerve-secreted proteins for skeletal muscle regeneration, potentially through regulating myoblast behavior, nerve function, and angiogenesis. These experiments provide insights into the nerve–muscle interactions and pave the way for developing advanced biomaterials strategies incorporating nerve cell secretome for accelerated skeletal muscle regeneration.

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