Detergent-enzymatic decellularization of swine blood vessels: Insight on mechanical properties for vascular tissue engineering

Alessandro F. Pellegata, M. Adelaide Asnaghi, Ilaria Stefani, Anna Maestroni, Silvia Maestroni, Tommaso Dominioni, Sandro Zonta, Gianpaolo Zerbini, Sara Mantero

Research output: Contribution to journalArticlepeer-review

Abstract

Small caliber vessels substitutes still remain an unmet clinical need; few autologous substitutes are available, while synthetic grafts show insufficient patency in the long term. Decellularization is the complete removal of all cellular and nuclear matters from a tissue while leaving a preserved extracellular matrix representing a promising tool for the generation of acellular scaffolds for tissue engineering, already used for various tissues with positive outcomes. The aim of this work is to investigate the effect of a detergent-enzymatic decellularization protocol on swine arteries in terms of cell removal, extracellular matrix preservation, and mechanical properties. Furthermore, the effect of storage at -80°C on the mechanical properties of the tissue is evaluated. Swine arteries were harvested, frozen, and decellularized; histological analysis revealed complete cell removal and preserved extracellular matrix. Furthermore, the residual DNA content in decellularized tissues was far low compared to native one. Mechanical testings were performed on native, defrozen, and decellularized tissues; no statistically significant differences were reported for Young's modulus, ultimate stress, compliance, burst pressure, and suture retention strength, while ultimate strain and stress relaxation of decellularized vessels were significantly different from the native ones. Considering the overall results, the process was confirmed to be suitable for the generation of acellular scaffolds for vascular tissue engineering.

Original languageEnglish
Article number918753
JournalBioMed Research International
Volume2013
DOIs
Publication statusPublished - 2013

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)
  • Immunology and Microbiology(all)
  • Medicine(all)

Fingerprint Dive into the research topics of 'Detergent-enzymatic decellularization of swine blood vessels: Insight on mechanical properties for vascular tissue engineering'. Together they form a unique fingerprint.

Cite this