Cited by 72Tissue Engineering and Regenerative MedicineWound Healing and TreatmentsBone Tissue Engineering Materials

The effect of cell debris within biologic scaffolds upon the macrophage response

Londono, Ricardo, Dziki, Jenna L., Haljasmaa, Eric, Turner, Neill J., Leifer, Cynthia A., Badylak, Stephen F.·2017·Journal of Biomedical Materials Research Part A

Abstract

All biomaterials, including biologic scaffolds composed of extracellular matrix (ECM), elicit a host immune response when implanted. The type and intensity of this response depends in part upon the thoroughness of decellularization and removal of cell debris from the source tissue. Proinflammatory responses have been associated with negative downstream remodeling events including scar tissue formation, encapsulation, and seroma formation. The relative effects of specific cellular components upon the inflammatory response are not known. The objective of the present study was to determine the effect of different cell remnants that may be present in ECM scaffold materials upon the host innate immune response, both in vitro and in vivo. Collagen scaffolds were supplemented with one of three different concentrations of DNA, mitochondria, or cell membranes. Murine macrophages were exposed to the various supplemented scaffolds and the effect upon macrophage phenotype was evaluated. In vivo studies were performed using an abdominal wall defect model in the rat to evaluate the effect of the scaffolds upon the macrophage response. Murine macrophages exposed in vitro to scaffolds supplemented with DNA, mitochondria, and cell membranes showed increased expression of proinflammatory M1 marker iNOS and no expression of the proremodeling M2 marker Fizz1 regardless of supplementation concentration. A dose‐dependent response was observed in the rat model for collagen scaffolds supplemented with cell remnants. DNA, mitochondria, and cell membrane remnants in collagen scaffolds promote a proinflammatory M1 macrophage phenotype in vivo and in vitro. These results reinforce the importance of a thorough decellularization process for ECM biologic scaffold materials. © 2017 Wiley Periodicals, Inc. J Biomed Mater Res Part A: 105A: 2109–2118, 2017.

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Crossref · 10.1002/jbm.a.36055

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Authors
Londono, R., Dziki, J. L., Haljasmaa, E., Turner, N. J., Leifer, C. A., & Badylak, S. F.
Affiliations
  • Department of Surgery McGowan Institute for Regenerative Medicine, University of Pittsburgh Pittsburgh Pennsylvania
  • University of Pittsburgh (US)
  • Cornell University (US)
Corresponding author
Badylak, Stephen F.
Venue
Journal of Biomedical Materials Research Part A
Publisher
Wiley
Published
2017-04-12
Volume
105
Issue
8
Pages
2109-2118
ISSN
  • 1549-3296 (ISSN-L)
  • 1552-4965
OpenAlex
W2592404696
Cited by
72
References
50
Citations by year
2026: 2 · 2025: 5 · 2024: 11 · 2023: 6 · 2022: 11 · 2021: 6 · 2020: 9 · 2019: 9 · 2018: 9 · 2017: 4
FWCI
8.69
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Biomedical Materials Research Part A (publishedVersion)
  • PubMed (publishedVersion)
Funders
National Institute of Allergy and Infectious Diseases (R21AI111081)
Topics
  • Health Sciences › Medicine › Surgery › Tissue Engineering and Regenerative Medicine
  • Health Sciences › Medicine › Rehabilitation › Wound Healing and Treatments
  • Physical Sciences › Engineering › Biomedical Engineering › Bone Tissue Engineering Materials
Keywords
cell debris, biological scaffolds, extracellular matrix, decellularization, macrophage response, M1 macrophage polarization, M2 macrophage polarization, collagen scaffolds, DNA, mitochondria, plasma membrane, innate immune response, abdominal wall defect, encapsulation, scar formation, seroma
MeSH terms
Animals, Biocompatible Materials, Cells, Cultured, Collagen, DNA, Extracellular Matrix, Immunity, Innate, Inflammation, Macrophages, Materials Testing, Mice, Inbred C57BL, Mitochondria, Tissue Engineering, Tissue Scaffolds

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