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Nanosized fibers' effect on adult human articular chondrocytes behavior.

Artikel i vetenskaplig tidskrift
Författare Hanna Stenhamre
Anna Thorvaldsson
Lars Enochson
Pernilla Walkenström
Anders Lindahl
Mats Brittberg
Paul Gatenholm
Publicerad i Materials science & engineering. C, Materials for biological applications
Volym 33
Nummer/häfte 3
Sidor 1539-1545
ISSN 1873-0191
Publiceringsår 2013
Publicerad vid Institutionen för biomedicin, avdelningen för klinisk kemi och transfusionsmedicin
Institutionen för kliniska vetenskaper, Avdelningen för ortopedi
Sidor 1539-1545
Språk en
Länkar dx.doi.org/10.1016/j.msec.2012.12.0...
Ämnesord Adult, Cartilage, Articular, cytology, Cell Adhesion, Cell Count, Cell Differentiation, Cell Proliferation, Cell Shape, Chondrocytes, cytology, ultrastructure, Chondrogenesis, Humans, Immunohistochemistry, Nanofibers, chemistry, ultrastructure, Particle Size, Tissue Scaffolds
Ämneskategorier Polymerteknologi, Materialteknik

Sammanfattning

Tissue engineering with chondrogenic cell based therapies is an expanding field with the intention of treating cartilage defects. It has been suggested that scaffolds used in cartilage tissue engineering influence cellular behavior and thus the long-term clinical outcome. The objective of this study was to assess whether chondrocyte attachment, proliferation and post-expansion re-differentiation could be influenced by the size of the fibers presented to the cells in a scaffold. Polylactic acid (PLA) scaffolds with different fiber morphologies were produced, i.e. microfiber (MS) scaffolds as well as nanofiber-coated microfiber scaffold (NMS). Adult human articular chondrocytes were cultured in the scaffolds in vitro up to 28 days, and the resulting constructs were assessed histologically, immunohistochemically, and biochemically. Attachment of cells and serum proteins to the scaffolds was affected by the architecture. The results point toward nano-patterning onto the microfibers influencing proliferation of the chondrocytes, and the overall 3D environment having a greater influence on the re-differentiation. In the efforts of finding the optimal scaffold for cartilage tissue engineering, studies as the current contribute to the knowledge of how to affect and control chondrocytes behavior.

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