In vitro chondrogenic differentiation of human adipose-derived stem cells with silk scaffolds
Author(s) -
Hyeon Joo Kim,
SangHyug Park,
Jennah L. Durham,
Jeffrey M. Gimble,
David L. Kaplan,
Jason L. Dragoo
Publication year - 2012
Publication title -
journal of tissue engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.436
H-Index - 30
ISSN - 2041-7314
DOI - 10.1177/2041731412466405
Subject(s) - chondrogenesis , adipose tissue , microbiology and biotechnology , stem cell , tissue engineering , chemistry , cellular differentiation , silk , chondrocyte , glycosaminoglycan , mesenchymal stem cell , scaffold , biomedical engineering , in vitro , materials science , biology , biochemistry , medicine , gene , composite material
Human adipose-derived stem cells have shown chondrogenicdifferentiation potential in cartilage tissue engineering in combination with naturaland synthetic biomaterials. In the present study, we hypothesized that porousaqueous-derived silk protein scaffolds would be suitable for chondrogenicdifferentiation of human adipose-derived stem cells. Human adipose-derived stem cellswere cultured up to 6 weeks, and cell proliferation and chondrogenic differentiationwere investigated and compared with those in conventional micromass culture. Cellproliferation, glycosaminoglycan, and collagen levels in aqueous-derived silk scaffoldswere significantly higher than in micromass culture. Transcript levels of SOX9 and typeII collagen were also upregulated in the cell–silk constructs at 6 weeks. Histologicalexamination revealed that the pores of the silk scaffolds were filled with cellsuniformly distributed. In addition, chondrocyte-specific lacunae formation was evidentand distributed in the both groups. The results suggest the biodegradable andbiocompatible three-dimensional aqueous-derived silk scaffolds provided an improvedenvironment for chondrogenic differentiation compared to micromass culture
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