Bio-ink development for three-dimensional bioprinting of hetero-cellular cartilage constructs

Vivian H M Mouser, Riccardo Levato, Anneloes Mensinga, Wouter J A Dhert, Debby Gawlitta, Jos Malda

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Abstract

Bioprinting is a promising tool to fabricate organized cartilage. This study aimed to investigate the printability of gelatin-methacryloyl/gellan gum (gelMA/gellan) hydrogels with and without methacrylated hyaluronic acid (HAMA), and to explore (zone-specific) chondrogenesis of chondrocytes, articular cartilage progenitor cells (ACPCs), and multipotent mesenchymal stromal cells (MSCs) embedded in these bio-inks. The incorporating of HAMA in gelMA/gellan bio-ink increased filament stability, as measured using a filament collapse assay, but did not influence (zone-specific) chondrogenesis of any of the cell types. Highest chondrogenic potential was observed for MSCs, followed by ACPCs, which displayed relatively high proteoglycan IV mRNA levels. Therefore, two-zone constructs were printed with gelMA/gellan/HAMA containing ACPCs in the superficial region and MSCs in the middle/deep region. Chondrogenic differentiation was confirmed, however, printing influence cellular differentiation. ACPC- and MSC-laden gelMA/gellan/HAMA hydrogels are of interest for the fabrication of cartilage constructs. Nevertheless, this study underscores the need for careful evaluation of the effects of printing on cellular differentiation.

Original languageEnglish
Pages (from-to)137-151
Number of pages15
JournalConnective tissue research
Volume61
Issue number2
DOIs
Publication statusPublished - 3 Mar 2020

Keywords

  • Chondroprogenitor cells
  • GelMA/gellan
  • hyaluronic acid
  • mesenchymal stromal cells
  • zonal cartilage

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