期刊
MATERIALS SCIENCE AND ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS
卷 70, 期 -, 页码 637-645出版社
ELSEVIER
DOI: 10.1016/j.msec.2016.09.044
关键词
Nanofibers; rhTGF-beta 3; Tracheal cartilage regeneration; WMSCs
资金
- National Natural Science Foundation of China [31370982, 31470941, 31271035]
- Ph.D. programs Foundation of Ministry of Education of China [20130075110005]
- Science and Technology Commission of Shanghai Municipality [15JC1490100, 15441905100]
- Yantai Double Hundred Talent Plan [20150812]
Tracheal injuries are one of major challenging issues in clinical medicine because of the poor intrinsic ability of tracheal cartilage for repair. Tissue engineering provides an alternative method for the treatment of tracheal defects by generating replacement tracheal structures. In this study, core-shell nanofibrous scaffold was fabricated to encapsulate bovine serum albumin & rhTGF-beta 3 (recombinant human transforming growth factor-beta 3) into the core of the nanofibers for tracheal cartilage regeneration. Characterization of the core-shell nanofibrous scaffold was carried out by scanning electron microscope (SEM), transmission electron microscope (TEM), laser scanning confocal microscopy (LSCM), and tensile mechanical test. The rhTGF-beta 3 released from the scaffolds in a sustained and stable manner for about 2 months. The bioactivity of released rhTGF-beta 3 was evaluated by its effect on the synthesis of type II collagen (COL2) and glycosaminoglycans (GAGS) by chondrocytes. The results suggested that its bioactivity was retained during release process. The proliferation and morphology analyses of mesenchymal stems cells derived from VVharton's jelly of human umbilical cord (WMSCs) indicated the good biocompatibility of the fabricated nanofibrous scaffold. Meanwhile, the chondrogenic differentiation of WMSCs cultured on core-shell nanofibrous scaffold was evaluated by real-time qPCR and histological staining. The results suggested that the core-shell nanofibrous scaffold with rhTGF-beta 3 could promote the chondrogenic differentiation ability of WMSCs. Therefore, WMSCs could be a promising seed cells in the construction of tissue-engineered tracheal cartilage. Overall, the core-shell nanofibrous scaffold could be an effective delivery system for rhTGF-beta 3 and served as a promising tissue engineered scaffold for tracheal cartilage regeneration. (C) 2016 Published by Elsevier B.V.
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