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Sci Rep. 2019 Mar 12;9(1):4275. doi: 10.1038/s41598-019-40575-w.

Characterization of polydactyly chondrocytes and their use in cartilage engineering.

Author information

1
Tissue Engineering + Biofabrication, Institute for Biomechanics, Swiss Federal Institute of Technology Zürich (ETH Zürich), Otto-Stern-Weg 7, CH-8093, Zürich, Switzerland.
2
Hematology Research Unit Helsinki, Department of Clinical Chemistry and Hematology, University of Helsinki and Helsinki University Hospital Comprehensive Cancer Center, Helsinki, Finland.
3
Division of Hand Surgery, University Children's Hospital, Steinwiesstrasse 75, 8032, Zürich, Switzerland.
4
Schulthess Clinic, Lengghalde 2, 8008, Zürich, Switzerland.
5
Sport Clinic Zürich Hirslanden, Witellikerstrasse 40, 8032, Zürich, Switzerland.
6
Tissue Engineering + Biofabrication, Institute for Biomechanics, Swiss Federal Institute of Technology Zürich (ETH Zürich), Otto-Stern-Weg 7, CH-8093, Zürich, Switzerland. marcy.zenobi@hest.ethz.ch.

Abstract

Treating cartilage injuries and degenerations represents an open surgical challenge. The recent advances in cell therapies have raised the need for a potent off-the-shelf cell source. Intra-articular injections of TGF-β transduced polydactyly chondrocytes have been proposed as a chronic osteoarthritis treatment but despite promising results, the use of gene therapy still raises safety concerns. In this study, we characterized infant, polydactyly chondrocytes during in vitro expansion and chondrogenic re-differentiation. Polydactyly chondrocytes have a steady proliferative rate and re-differentiate in 3D pellet culture after up to five passages. Additionally, we demonstrated that polydactyly chondrocytes produce cartilage-like matrix in a hyaluronan-based hydrogel, namely transglutaminase cross-linked hyaluronic acid (HA-TG). We utilized the versatility of TG cross-linking to augment the hydrogels with heparin moieties. The heparin chains allowed us to load the scaffolds with TGF-β1, which induced cartilage-like matrix deposition both in vitro and in vivo in a subcutaneous mouse model. This strategy introduces the possibility to use infant, polydactyly chondrocytes for the clinical treatment of joint diseases.

PMID:
30862915
DOI:
10.1038/s41598-019-40575-w
Free PMC Article

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