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Journal of Nanomaterials
Volume 2015, Article ID 250615, 7 pages
Research Article

The Potential Use of Platelet-Rich Plasma to Reconstruct the Microtia Chondrocyte in Human Auricular Cartilage Regeneration

1Stem Cell Research Center, Taipei Medical University, Taipei 110, Taiwan
2Graduate Institute of Biomedical Materials and Tissue Engineering, Taipei Medical University, Taipei 110, Taiwan
3Department of Otolaryngology, Wan-Fang Hospital, Taipei Medical University, Taipei 116, Taiwan
4Department of Dentistry, Taipei Medical University Hospital, Taipei 110, Taiwan

Received 14 November 2014; Revised 4 March 2015; Accepted 4 March 2015

Academic Editor: Ilaria Armentano

Copyright © 2015 Wei-Hong Chen et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Microtia is characterized as an incomplete auricular development and surgical reconstruction for microtia is still limited even with emerging developments. This study aimed to apply bionanomaterials (PRP/collagen scaffold) for human auricular neocartilage reconstruction by using microtia chondrocytes. The results showed that PRP (TGF-β1 750 pg/mL and 1 ng/mL) increased cell viability of microtia chondrocytes during in vitro 9-day cultures. Additionally, chondrogenic-specific mRNA of Aggrecan and type II collagen (Col II) was significantly and continuously expressed with PRP treatment during the 21-day in vitro expansion. Tissue engineering of auricular neocartilage was performed by seeding microtia chondrocytes in bionanomaterials (PRP/collagen scaffold) 3-dimensional (3D) cultures. Immunohistochemistry (IHC) of Col II showed intensive signals between cells and matrix after 4-week cultures. Conclusion. Our results demonstrated that PRP promotes proliferation and redifferentiation of microtia chondrocytes and provides regenerative potentials in auricular neocartilage reconstruction.