Collagen I based enzymatically degradable membranes for organ-on-a-chip barrier models

Yusuf B. Arik, Aisen De sa Vivas, Daphne Laarveld, Neri Van Laar, Jesse Gemser, Thomas Visscher, Albert van den Berg, Robert Passier, Andries D. van der Meer*

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

3 Citations (Scopus)
24 Downloads (Pure)

Abstract

Organs-on-chips are microphysiological in vitro models of human organs and tissues that rely on culturing cells in a well-controlled microenvironment that has been engineered to include key physical and biochemical parameters. Some systems contain a single perfused microfluidic channel or a patterned hydrogel, whereas more complex devices typically employ two or more microchannels that are separated by a porous membrane, simulating the tissue interface found in many organ subunits. The membranes are typically made of synthetic and biologically inert materials that are then coated with extracellular matrix (ECM) molecules to enhance cell attachment. However, the majority of the material remains foreign and fails to recapitulate the native microenvironment of the barrier tissue. Here, we study microfluidic devices that integrate a vitrified membrane made of collagen-I hydrogel (VC). The biocompatibility of this membrane was confirmed by growing a healthy population of stem cell derived endothelial cells (iPSC-EC) and immortalized retinal pigment epithelium (ARPE-19) on it and assessing morphology by fluorescence microscopy. Moreover, VC membranes were subjected to biochemical degradation using collagenase II. The effects of this biochemical degradation were characterized by the permeability changes to fluorescein. Topographical changes on the VC membrane after enzymatic degradation were also analyzed using scanning electron microscopy. Altogether, we present a dynamically bioresponsive membrane integrated in an organ-on-chip device with which disease-related ECM remodeling can be studied.

Original languageEnglish
Pages (from-to)2998-3005
Number of pages8
JournalACS Biomaterials Science and Engineering
Volume7
Issue number7
DOIs
Publication statusPublished - 12 Jul 2021

Keywords

  • UT-Hybrid-D
  • organ-on-a-chip
  • permeability
  • vitrified collagen membrane
  • collagenase

Fingerprint

Dive into the research topics of 'Collagen I based enzymatically degradable membranes for organ-on-a-chip barrier models'. Together they form a unique fingerprint.

Cite this