Volume 109, Issue 11 pp. 2280-2293
RESEARCH ARTICLE

Biomimetic sponges improve muscle structure and function following volumetric muscle loss

Gabriel Haas

Gabriel Haas

Department of Biomedical Engineering, Parks College of Engineering, Aviation, and Technology, Saint Louis University, St. Louis, Missouri, USA

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Andrew Dunn

Andrew Dunn

Department of Biomedical Engineering, Parks College of Engineering, Aviation, and Technology, Saint Louis University, St. Louis, Missouri, USA

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Josh Madsen

Josh Madsen

Department of Biomedical Engineering, Parks College of Engineering, Aviation, and Technology, Saint Louis University, St. Louis, Missouri, USA

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Peter Genovese

Peter Genovese

Department of Biomedical Engineering, Parks College of Engineering, Aviation, and Technology, Saint Louis University, St. Louis, Missouri, USA

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Hannah Chauvin

Hannah Chauvin

Department of Biomedical Engineering, Parks College of Engineering, Aviation, and Technology, Saint Louis University, St. Louis, Missouri, USA

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Jeffrey Au

Jeffrey Au

Department of Biomedical Engineering, Parks College of Engineering, Aviation, and Technology, Saint Louis University, St. Louis, Missouri, USA

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Natalia Ziemkiewicz

Natalia Ziemkiewicz

Department of Biomedical Engineering, Parks College of Engineering, Aviation, and Technology, Saint Louis University, St. Louis, Missouri, USA

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David Johnson

David Johnson

Department of Biomedical Engineering, Parks College of Engineering, Aviation, and Technology, Saint Louis University, St. Louis, Missouri, USA

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Allison Paoli

Allison Paoli

Department of Biomedical Engineering, Parks College of Engineering, Aviation, and Technology, Saint Louis University, St. Louis, Missouri, USA

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Andrew Lin

Andrew Lin

Department of Biomedical Engineering, Parks College of Engineering, Aviation, and Technology, Saint Louis University, St. Louis, Missouri, USA

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Nicholas Pullen

Nicholas Pullen

School of Biological Sciences, College of Natural and Health Sciences, University of Northern Colorado, Greeley, Colorado, USA

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Koyal Garg

Corresponding Author

Koyal Garg

Department of Biomedical Engineering, Parks College of Engineering, Aviation, and Technology, Saint Louis University, St. Louis, Missouri, USA

Correspondence

Koyal Garg, PhD, Assistant Professor, Department of Biomedical Engineering, Parks College of Engineering, Aviation, and Technology, 3507 Lindell Blvd, St. Louis, MO 63103, USA.

Email: [email protected]

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First published: 07 May 2021
Citations: 7

Gabriel Haas and Andrew Dunn contributed equally to this study.

Funding information: National Institutes of General Medical Sciences (NIH), Grant/Award Number: 1R15GM129731

Abstract

Skeletal muscle is inept in regenerating after traumatic injuries such as volumetric muscle loss (VML) due to significant loss of various cellular and acellular components. Currently, there are no approved therapies for the treatment of muscle tissue following trauma. In this study, biomimetic sponges composed of gelatin, collagen, laminin-111, and FK-506 were used for the treatment of VML in a rodent model. We observed that biomimetic sponge treatment improved muscle structure and function while modulating inflammation and limiting the extent of fibrotic tissue deposition. Specifically, sponge treatment increased the total number of myofibers, type 2B fiber cross-sectional area, myosin: collagen ratio, myofibers with central nuclei, and peak isometric torque compared to untreated VML injured muscles. As an acellular scaffold, biomimetic sponges may provide a promising clinical therapy for VML.

CONFLICT OF INTEREST

Koyal Garg has equity interest in GenAssist, Inc., and serves on the company's scientific advisory board. GenAssist, Inc. is developing products related to the research described in this paper. The terms of this arrangement have been reviewed and approved by Saint Louis University, in accordance with its conflict of interest policies. GH (Gabriel Haas) is the CEO and Josh Madsen is the CTO of GenAssist, Inc. and both are members of the board of directors. AD (Andrew Dunn) also holds equity interest in GenAssist, Inc.

DATA AVAILABILITY STATEMENT

The data that support the findings of this study are available from the corresponding author upon reasonable request.

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