Cited by 180Tissue Engineering and Regenerative MedicineWound Healing and TreatmentsBone Tissue Engineering Materials

Recruitment of Progenitor Cells by an Extracellular Matrix Cryptic Peptide in a Mouse Model of Digit Amputation

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Agrawal, Vineet, Tottey, Stephen, Johnson, Scott A., Freund, John M., Siu, Bernard F., Badylak, Stephen F.·2011·Tissue Engineering Part A

Abstract

Biologic scaffolds composed of extracellular matrix (ECM) have been used successfully in preclinical models and humans for constructive remodeling of functional, site-appropriate tissue after injury. The mechanisms underlying ECM-mediated constructive remodeling are not completely understood, but scaffold degradation and site-directed recruitment of both differentiated and progenitor cells are thought to play critical roles. Previous studies have shown that degradation products of ECM scaffolds can recruit a population of progenitor cells both in vitro and in vivo. The present study identified a single cryptic peptide derived from the α subunit of the collagen III molecule that is chemotactic for a well-characterized perivascular stem cell in vitro and causes the site-directed accumulation of progenitor cells in vivo. The oligopeptide was additionally chemotactic for human cortical neural stem cells, rat adipocyte stem cells, C2C12 myoblast cells, and rat Schwann cells in vitro. In an adult murine model of digit amputation, treatment with this peptide after mid-second phalanx amputation resulted in a greater number of Sox2+ and Sca1+,Lin- cells at the site of injury compared to controls. Since progenitor cell activation and recruitment are key prerequisites for epimorphic regeneration in adult mammalian tissues, endogenous site-directed recruitment of such cells has the potential to alter the default wound healing response from scar tissue toward regeneration.

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Crossref · 10.1089/ten.tea.2011.0036

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  • Following implantation, natural ECM scaffolds undergo degradation, releasing matricryptic peptides and growth factors, which triggers a shift in macrophage polarization from pro-inflammatory M1 to anti-inflammatory regenerative M2, promoting angiogenesis and recruiting stem/progenitor cells for constructive remodeling.

    “Following implantation, these natural ECM scaffolds undergo a degree of degradation, releasing matricryptic peptides and growth factors. This process triggers a shift in macrophage polarization from pro-inflammatory (M1) phenotype to an anti-inflammatory regenerative phenotype (M2 macrophages), promoting angiogenesis and recruiting stem/progenitor cell toward the implanted tissue for constructive”

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Authors
Agrawal, V., Tottey, S., Johnson, S. A., Freund, J. M., Siu, B. F., & Badylak, S. F.
Affiliations
University of Pittsburgh (US)
Corresponding author
Badylak, Stephen F.
Venue
Tissue Engineering Part A
Published
2011-10
Volume
17
Issue
19-20
Pages
2435-2443
ISSN
  • 1937-3341 (ISSN-L)
  • 1937-335X
OpenAlex
W2169478984
Cited by
180
References
63
Citations by year
2026: 3 · 2025: 6 · 2024: 9 · 2023: 12 · 2022: 3 · 2021: 12 · 2020: 16 · 2019: 7 · 2018: 16 · 2017: 20 · 2016: 18 · 2015: 17 · 2014: 14 · 2013: 10 · 2012: 13
FWCI
13.11
Type
journal article
Language
en
Open access
Locations
  • Tissue Engineering Part A (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health (W81XWH, W81XWH-08-2-0032)
  • National Heart, Lung, and Blood Institute (1F30-HL102990, F30HL102990)
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
extracellular matrix, cryptic peptides, type III collagen, progenitor cell recruitment, chemotaxis, digit amputation, epimorphic regeneration, perivascular stem cells, neural stem cells, Schwann cells, myoblasts, scaffold degradation, wound healing, scar tissue, tissue engineering scaffolds
MeSH terms
Amputation, Surgical, Animals, Cell Count, Cell Separation, Chemotaxis, Disease Models, Animal, Extracellular Matrix, Forelimb, Humans, Peptides, Stem Cells, Toes, Reproducibility of Results, Sus scrofa, Cell Proliferation, Mice, Rats, SOXB1 Transcription Factors

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