3D printing and characterization of human nasoseptal chondrocytes laden dual crosslinked oxidized alginate-gelatin hydrogels for cartilage repair approaches

Schwarz S, Kuth S, Distler T, Gögele C, Stölzel K, Detsch R, Boccaccini AR, Schulze-Tanzil G (2020)

Publication Type: Journal article

Publication year: 2020

Journal

Materials Science and Engineering C Elsevier

Book Volume: 116

Article Number: 111189

DOI: 10.1016/j.msec.2020.111189

Abstract

As cartilage is one of the few tissues in the human body that is not vascularized, the body has very limited capabilities to repair cartilage defects. Hence, novel condro-instructive biomaterials facilitating cartilage formation by implanted chondrocytes are required. In this work, an oxidized alginate-gelatin hydrogel system, alginate-di-aldehyde (ADA) and gelatin (GEL), was used to fabricate 3D printed grid-like structures for cartilage tissue engineering. Enzymatic and ionic crosslinking techniques using microbial transglutaminase (mTG) and divalent ions (CaCl2) were combined to ensure long-term stability of the 3D printed structures. Human nasoseptal chondrocytes were embedded in ADA-GEL prior to 3D printing. Cell viability, proliferation, and metabolic activity were analyzed after 7 and 14 days. The influence of the enzymatic crosslinking and the 3D printing process on the primary human chondrocytes were investigated. It was found that neither the 3D printing process nor the crosslinking by mTG impaired chondrocyte viability. The formation of the main cartilage-specific extracellular matrix components collagen type II and cartilage proteoglycans was shown by immunohistochemical staining. The combination of enzymatic and ionic crosslinking for the 3D printing of ADA-GEL hydrogels is therefore a promising approach for the 3D cultivation of primary human chondrocytes for cartilage tissue engineering.

Authors with CRIS profile

Thomas Distler Lehrstuhl für Werkstoffwissenschaften (Biomaterialien) Rainer Detsch Lehrstuhl für Werkstoffwissenschaften (Biomaterialien) Aldo Boccaccini Lehrstuhl für Werkstoffwissenschaften (Biomaterialien)

Involved external institutions

Paracelsus Medizinische Privatuniversität, Nürnberg DE Germany (DE) Charité - Universitätsmedizin Berlin DE Germany (DE)

How to cite

APA:

Schwarz, S., Kuth, S., Distler, T., Gögele, C., Stölzel, K., Detsch, R.,... Schulze-Tanzil, G. (2020). 3D printing and characterization of human nasoseptal chondrocytes laden dual crosslinked oxidized alginate-gelatin hydrogels for cartilage repair approaches. Materials Science and Engineering C, 116. https://doi.org/10.1016/j.msec.2020.111189

MLA:

Schwarz, Silke, et al. "3D printing and characterization of human nasoseptal chondrocytes laden dual crosslinked oxidized alginate-gelatin hydrogels for cartilage repair approaches." Materials Science and Engineering C 116 (2020).

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