Cited by 46Collagen: Extraction and CharacterizationHydrogels: synthesis, properties, applicationsCellular Mechanics and Interactions

A microscopic and macroscopic study of aging collagen on its molecular structure, mechanical properties, and cellular response

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Wilson, Samantha L., Guilbert, Marie, Sulé‐Suso, Josep, Torbet, Jim, Jeannesson, Pierre, Sockalingum, Ganesh D., Yang, Ying·2014·The FASEB Journal

Abstract

During aging, collagen structure changes, detrimentally affecting tissues' biophysical and biomechanical properties due to an accumulation of advanced glycation end-products (AGEs). In this investigation, we conducted a parallel study of microscopic and macroscopic properties of different-aged collagens from newborn to 2-yr-old rats, to examine the effect of aging on fibrillogenesis, mechanical and contractile properties of reconstituted hydrogels from these collagens seeded with or without fibroblasts. In addition to fibrillogenesis of collagen under the conventional conditions, some fibrillogenesis was conducted alongside a 12-T magnetic field, and gelation rate and AGE content were measured. A nondestructive indentation technique and optical coherence tomography were used to determine the elastic modulus and dimensional changes, respectively. It was revealed that in comparison to younger specimens, older collagens exhibited higher viscosity, faster gelation rates, and a higher AGE-specific fluorescence. Exceptionally, only young collagens formed highly aligned fibrils under magnetic fields. The youngest collagen demonstrated a higher elastic modulus and contraction in comparison to the older collagen. We conclude that aging changes collagen monomer structure, which considerably affects the fibrillogenesis process, the architecture of the resulting collagen fibers and the global network, and the macroscopic properties of the formed constructs.

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Crossref · 10.1096/fj.13-227579

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Authors
Wilson, S. L., Guilbert, M., Sulé‐Suso, J., Torbet, J., Jeannesson, P., Sockalingum, G. D., & Yang, Y.
Affiliations
  • Keele University (GB)
  • Centre National de la Recherche Scientifique (FR)
  • University Hospitals of North Midlands NHS Trust (GB)
Venue
The FASEB Journal
Publisher
Wiley
Published
2013-09-11
Volume
28
Issue
1
Pages
14-25
ISSN
  • 0892-6638 (ISSN-L)
  • 1530-6860
OpenAlex
W2127586000
Cited by
46
References
51
Citations by year
2026: 4 · 2025: 3 · 2024: 6 · 2023: 2 · 2022: 5 · 2020: 3 · 2019: 1 · 2018: 3 · 2017: 5 · 2016: 8 · 2015: 2 · 2014: 4
FWCI
1.78
Type
journal article
Language
en
Open access
Locations
  • The FASEB Journal (publishedVersion)
  • PubMed (publishedVersion)
  • HAL (submittedVersion)
  • Loughborough University Institutional Repository (Loughborough University) (submittedVersion, cc-by-nc-nd)
  • Loughborough University Research Repository (Loughborough University) (submittedVersion, cc-by-nc-nd)
Funders
Engineering and Physical Sciences Research Council
Topics
  • Physical Sciences › Materials Science › Biomaterials › Collagen: Extraction and Characterization
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Medicine › Hydrogels: synthesis, properties, applications
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Cellular Mechanics and Interactions
Keywords
collagen aging, advanced glycation end products, fibril formation, collagen gel, fibroblast contraction, magnetic field alignment, elastic modulus, gelation rate, optical coherence tomography, indentation, tissue mechanics
MeSH terms
Aging, Animals, Collagen, Molecular Structure, Glycation End Products, Advanced, Rats

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