Characterization of a bioactive fiber scaffold with entrapped HUVECs in coaxial electrospun core-shell fiber

Hui Ying Ang, Scott Alexander Irvine, Ron Avrahami, Ehud (Udi) Sarig, Tomer Bronshtein, Eyal Zussman, Freddy Yin Chiang Boey, Marcelle Machluf, Subbu S Venkatraman

Research output: Contribution to journalArticlepeer-review

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Abstract

Human umbilical vein endothelial cells (HUVECs) were successfully entrapped in polyethylene oxide (PEO) core /polycaprolactone (PCL) shell electrospun fibers thus creating a “bioactive fiber.” The viability and release of biomolecules from the entrapped cells in the bioactive fibers were characterized. A key modification to the core solution was the inclusion of 50% fetal bovine serum (FBS), which improved cell viability substantially. The fluorescein diacetate (FDA) staining revealed that the entrapped cells were intact and viable immediately after the electrospinning process. A long-term cell viability assay using AlamarBlue® showed that cells were viable for over two weeks. Secreted Interleukin-8 (IL-8) was monitored as a candidate released protein, which can also act as an indicator of HUVEC stress. These results demonstrated that HUVECs could be entrapped within the electrospun scaffold with the potential of controllable cell deposition and the creation of a bioactive fibrous scaffold with extended functionality.
Original languageEnglish
JournalBiomatter
DOIs
StatePublished - 17 Jan 2014
Externally publishedYes

Keywords

  • Electrospinning, Bioactive fiber
  • Cell encapsulation
  • Cell entrapment
  • HUVECs
  • Core shell fiber

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