Sonication-assisted method for decellularization of human umbilical artery for small-caliber vascular tissue engineering

Chih Hsun Lin, Kai Hsia, Chih Kuan Su, Chien Chin Chen, Chang Ching Yeh, Hsu Ma, Jen Her Lu

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

Decellularized vascular grafts are useful for the construction of biological small-diameter tissue-engineered vascular grafts (≤6 mm). Traditional chemical decellularization requires a long treatment time, which may damage the structure and alter the mechanical properties. Decellulari-zation using sonication is expected to solve this problem. The aim of this study was to develop an effective decellularization method using ultrasound followed by washing. Different power values of sonication at 40 kHz were tested for 2, 4, and 8 h followed by a washing procedure. The efficacy of sonication of decellularized human umbilical artery (sDHUA) was evaluated via DNA content, histological staining, mechanical properties, and biocompatibility. The sDHUAs were further im-planted into rats for up to 90 days and magnetic resonance angiography (MRA) was performed for the implanted grafts. The results demonstrated that treatment of human umbilical artery (HUA) by sonication at ultrasonic power of 204 W for 4 h followed by washing for 24 h in 2% SDS buffer could eliminate more than 90% of cells and retain similar mechanical properties of the HUA. Recellulari-zation was assessed by scanning electron microscopy (SEM), which indicated that sDHUA provided niches for human umbilical vein endothelial cells (HUVECs) to reside, indicating in vitro cytocom-patibility. Further implantation tests also indicated the fitness of the sonication-treated HUA as a scaffold for small-caliber tissue engineering vascular grafts.

Original languageEnglish
Article number1699
JournalPolymers
Volume13
Issue number11
DOIs
Publication statusPublished - Jun 1 2021

Keywords

  • Biocompatibility
  • Extracel-lular matrix
  • Recellularization
  • Sonication decellularized human umbilical artery
  • Ultrasonic decellularization

ASJC Scopus subject areas

  • Chemistry(all)
  • Polymers and Plastics

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