Cited by 78Tissue Engineering and Regenerative Medicine3D Printing in Biomedical ResearchHydrogels: synthesis, properties, applications

Mechanostructure and composition of highly reproducible decellularized liver matrices

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Mattei, G., Di Patria, V., Tirella, A., Alaimo, A., Elia, G., Corti, A., Paolicchi, A., Ahluwalia, A.·2014·Acta Biomaterialia

Abstract

Despite the increasing number of papers on decellularized scaffolds, there is little consensus on the optimum method of decellularizing biological tissue such that the micro-architecture and protein content of the matrix are conserved as far as possible. Focusing on the liver, the aim of this study was therefore to develop a method for the production of well-characterized and reproducible matrices that best preserves the structure and composition of the native extra cellular matrix (ECM). Given the importance of matrix stiffness in regulating cell response, the mechanical properties of the decellularized tissue were also considered. The testing and analysis framework is based on the characterization of decellularized and untreated samples in the same reproducible initial state (i.e., the equilibrium swollen state). Decellularized ECM (dECM) were characterized using biochemical, histological, mechanical and structural analyses to identify the best procedure to ensure complete cell removal while preserving most of the native ECM structure and composition. Using this method, sterile decellularized porcine ECM with highly conserved intra-lobular micro-structure and protein content were obtained in a consistent and reproducible manner using the equilibrium swollen state of tissue or matrix as a reference. A significant reduction in the compressive elastic modulus was observed for liver dECM with respect to native tissue, suggesting a re-examination of design parameters for ECM-mimicking scaffolds for engineering tissues in vitro.

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Crossref · 10.1016/j.actbio.2013.10.023

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Authors
Mattei, G., Di Patria, V., Tirella, A., Alaimo, A., Elia, G., Corti, A., Paolicchi, A., & Ahluwalia, A.
Affiliations
  • University of Pisa (IT)
  • Istituto di Fisiologia Clinica (IT)
Corresponding author
Mattei, G.
Venue
Acta Biomaterialia
Publisher
Elsevier BV
Published
2014-02
Volume
10
Issue
2
Pages
875-882
ISSN
1742-7061 (ISSN-L)
OpenAlex
W1975163366
Cited by
78
References
30
Citations by year
2026: 1 · 2025: 4 · 2024: 10 · 2023: 5 · 2022: 5 · 2021: 8 · 2020: 4 · 2019: 5 · 2018: 7 · 2017: 8 · 2016: 9 · 2015: 9 · 2014: 3
FWCI
6.89
Type
journal article
Language
en
Open access
Locations
  • Acta Biomaterialia (publishedVersion)
  • PubMed (publishedVersion)
  • CINECA IRIS Institutial research information system (University of Pisa) (submittedVersion)
  • Iris (University of Trento) (submittedVersion)
  • Research Explorer (The University of Manchester) (submittedVersion)
  • Zenodo (CERN European Organization for Nuclear Research) (submittedVersion, other-oa)
Funders
European Commission
Topics
  • Health Sciences › Medicine › Surgery › Tissue Engineering and Regenerative Medicine
  • Physical Sciences › Engineering › Biomedical Engineering › 3D Printing in Biomedical Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Medicine › Hydrogels: synthesis, properties, applications
Keywords
extracellular matrix, porcine liver, mechanical properties, compressive modulus, tissue engineering scaffolds, reproducibility
MeSH terms
Animals, Biomechanical Phenomena, Cell Survival, DNA, Extracellular Matrix, Liver, Reproducibility of Results, Cell Death, Imaging, Three-Dimensional, Sus scrofa, Tissue Scaffolds

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