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J Tissue Eng Regen Med. 2016 Apr;10(4):294-304. doi: 10.1002/term.1716. Epub 2013 Mar 14.

In vitro generation of whole osteochondral constructs using rabbit bone marrow stromal cells, employing a two-chambered co-culture well design.

Author information

1
Department of Bioengineering, National University of Singapore.
2
Department of Orthopaedic Surgery, National University of Singapore.
3
Department of Mechanical Engineering, National University of Singapore.

Abstract

The regeneration of whole osteochondral constructs with a physiological structure has been a significant issue, both clinically and academically. In this study, we present a method using rabbit bone marrow stromal cells (BMSCs) cultured on a silk-RADA peptide scaffold in a specially designed two-chambered co-culture well for the generation of multilayered osteochondral constructs in vitro. This specially designed two-chambered well can simultaneously provide osteogenic and chondrogenic stimulation to cells located in different regions of the scaffold. We demonstrated that this co-culture approach could successfully provide specific chemical stimulation to BMSCs located on different layers within a single scaffold, resulting in the formation of multilayered osteochondral constructs containing cartilage-like and subchondral bone-like tissue, as well as the intermediate osteochondral interface. The cells in the intermediate region were found to be hypertrophic chondrocytes, embedded in a calcified extracellular matrix containing glycosaminoglycans and collagen types I, II and X. In conclusion, this study provides a single-step approach that highlights the feasibility of rabbit BMSCs as a single-cell source for multilayered osteochondral construct generation in vitro.

KEYWORDS:

BMSCs; co-cultured well; osteochondral

PMID:
23495238
DOI:
10.1002/term.1716
[Indexed for MEDLINE]
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