Effects of electrospun fibers containing ascorbic acid on oxidative stress reduction for cardiac tissue engineering

Ella Louise Handley, Anthony Callanan*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract / Description of output

Tissue engineering provides promise for regeneration of cardiac tissue following myocardial infarction. However, the harsh microenvironment of the infarct hampers the efficacy of regenerative therapies. Ischemia-reperfusion injury dramatically increases the levels of reactive oxygen species (ROS) within the infarcted area, causing a cascade of further cellular injury. Implantable tissue engineered grafts can target this oxidative stress by delivering pharmaceutical compounds directly into the diseased tissue. Herein, we successfully fabricated electrospun polycaprolactone (PCL) fibers containing varying concentrations of ascorbic acid, a potent antioxidant well known for its ROS-scavenging capabilities. The antioxidant scaffolds displayed significantly improved scavenging of DPPH radicals, superoxide anions and hydroxyl radicals, in a dose dependent manner. Mechanical properties testing indicated that incorporation of ascorbic acid enhanced the strength and Young's modulus of the material, correlating with a moderate but non-significant increase in the crystallinity. Moreover, the scaffolds supported adhesion and maintained survival of human umbilical vein endothelial cells in vitro, indicating good cytocompatibility. These results provide motivation for the use of ascorbic acid-containing fibrous scaffolds to regulate the highly oxidative microenvironment following myocardial infarction.

Original languageEnglish
Article numbere54242
JournalJournal of Applied Polymer Science
Volume140
Issue number32
Early online date26 May 2023
DOIs
Publication statusPublished - 20 Aug 2023

Keywords / Materials (for Non-textual outputs)

  • antioxidant scaffold
  • ascorbic acid
  • cardiac tissue engineering
  • electrospinning
  • myocardial infarction

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