Cited by 20Tissue Engineering and Regenerative Medicine3D Printing in Biomedical ResearchBone Tissue Engineering Materials

3D printing a biocompatible elastomer for modeling muscle regeneration after volumetric muscle loss

Open access
Kiratitanaporn, Wisarut, Berry, David B., Mudla, Anusorn, Fried, Trevor, Lao, Alison, Yu, Claire, Hao, Nan, Ward, Samuel R. +1 more·2022·Biomaterials Advances

Abstract

Volumetric muscle loss (VML) injuries due to trauma, tumor ablation, or other degenerative muscle diseases are debilitating and currently have limited options for self-repair. Advancements in 3D printing allow for the rapid fabrication of biocompatible scaffolds with designer patterns. However, the materials chosen are often stiff or brittle, which is not optimal for muscle tissue engineering. This study utilized a photopolymerizable biocompatible elastomer - poly (glycerol sebacate) acrylate (PGSA) - to develop an in vitro model of muscle regeneration and proliferation into an acellular scaffold after VML injury. Mechanical properties of the scaffold were tuned by controlling light intensity during the 3D printing process to match the specific tension of skeletal muscle. The effect of both geometric (channel sizes between 300 and 600 μm) and biologic (decellularized muscle extracellular matrix (dECM)) cues on muscle progenitor cell infiltration, proliferation, organization, and maturation was evaluated in vitro using a near-infrared fluorescent protein (iRFP) transfected cell line to assess cells in the 3D scaffold. Larger channel sizes and dECM coating were found to enhance cell proliferation and maturation, while no discernable effect on cell alignment was observed. In addition, a pilot experiment was carried out to evaluate the regenerative capacity of this scaffold in vivo after a VML injury. Overall, this platform demonstrates a simple model to study muscle progenitor recruitment and differentiation into acellular scaffolds after VML repair.

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Crossref · 10.1016/j.bioadv.2022.213171

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  • 3D bioprinting enables fabrication of complex muscle tissue constructs with precise control over architecture and composition.

    “Recent progress in 3D bioprinting holds significant promise for addressing VML by enabling the fabrication of complex muscle tissue constructs with precise control over architecture and composition [8, 9].”

    From Development of silk microfiber-reinforced bioink for muscle tissue engineering and in situ printing by a handheld 3D printer (2025) · cites this paper as [9]

    The Introduction and Results section on 3D printing PGSA microchannel scaffolds describe fabrication of VML-oriented scaffolds with intricate architecture and controlled channel sizes. The Methods also describe choosing a PGSA bioink and adding a dECM coating, but the work prints acellular scaffolds rather than complex muscle tissue constructs, and it does not demonstrate precise control of tissue composition through printing. (LLM, conf=0.85)

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Research works printed but not linked: 14

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Authors
Kiratitanaporn, W., Berry, D. B., Mudla, A., Fried, T., Lao, A., Yu, C., Hao, N., Ward, S. R., & Chen, S.
Affiliations
University of California San Diego (US)
Corresponding author
  • Ward, Samuel R.
  • Chen, Shaochen
Venue
Biomaterials Advances
Publisher
Elsevier BV
Published
2022-11
Volume
142
Pages
213171
ISSN
2772-9508 (ISSN-L)
OpenAlex
W4307297270
Cited by
20
References
85
Citations by year
2026: 2 · 2025: 4 · 2024: 7 · 2023: 7
FWCI
4.30
Type
journal article
Language
en
Open access
Locations
  • Biomaterials Advances (acceptedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Institutes of Health (P30 NS047101, R21AR074763, R01AR070830-01, R01GM111458)
  • University of California, San Diego
  • National Science Foundation (1903933, 2135720)
Topics
  • Health Sciences › Medicine › Surgery › Tissue Engineering and Regenerative Medicine
  • Physical Sciences › Engineering › Biomedical Engineering › 3D Printing in Biomedical Research
  • Physical Sciences › Engineering › Biomedical Engineering › Bone Tissue Engineering Materials
Keywords
volumetric muscle loss, muscle regeneration, 3D bioprinting, acellular scaffolds, decellularized extracellular matrix, muscle progenitor cells, cell proliferation, cell maturation, channel geometry, light intensity, mechanical properties, in vitro model, in vivo regeneration
MeSH terms
Decanoates, Glycerol, Humans, Muscular Diseases, Polymers, Regeneration, Muscle, Skeletal, Elastomers, Tissue Engineering, Printing, Three-Dimensional

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