title: Platelet-derived growth factor BB gene-released scaffolds: biosynthesis and characterization.
abstract: Tissue engineering generally requires three basic elements; stem/progenitor cells, inductive agents and a biomaterial scaffold; the latter is one of the key components which directly influences cellular activity and matrix formation. Commonly used scaffolds to repair defects in general do not induce stem cell recruitment, which is an essential element to tissue regeneration. In this study, fabrication of a scaffold which is capable of restoring damaged tissue through the recruitment of mesenchymal stem cells (MSCs) by gene therapy of the gene encoding platelet-derived growth factor-B (PDGF-B) was investigated. PDGF-B adenovirus (AdPDGF) was combined into novel mesoporous bioglass-silk fibrin scaffolds, which were characterized for their controlled release and sustained bioactivity. Our results demonstrate that these scaffolds can release PDGF-B adenovirus for up to 3 weeks and increase MSC recruitment, both in vitro and following subcutaneous implantation in mice. Osseous calvarial defects in mice further demonstrate the ability of these scaffolds to enhance tissue regeneration through stem cell homing. This study demonstrates the potent ability of host stem cells to regenerate tissue defects through recruitment of MSCs via gene therapy. Copyright © 2013 John Wiley & Sons, Ltd.
authors.affiliation: State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, People's Republic of China. zyf@whu.edu.cn.
authors.forename: Yufeng
authors.initials: Y
authors.lastname: Zhang
authors.affiliation: State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, People's Republic of China.
authors.forename: Yihui
authors.initials: Y
authors.lastname: Ma
authors.affiliation: State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, People's Republic of China.
authors.forename: Chengtie
authors.initials: C
authors.lastname: Wu
authors.affiliation: State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, People's Republic of China.
authors.forename: Richard J
authors.initials: RJ
authors.lastname: Miron
authors.affiliation: State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, People's Republic of China.
authors.forename: Xiangrong
authors.initials: X
authors.lastname: Cheng
mesh_terms: D000256:Adenoviridae; D000818:Animals; D018014:Gene Transfer Techniques; D006801:Humans; D059630:Mesenchymal Stem Cells / Q000378:metabolism* / Q000473:pathology; D051379:Mice; D020574:Proto-Oncogene Proteins c-sis / Q000096:biosynthesis / Q000235:genetics; D012886:Skull / Q000293:injuries / Q000378:metabolism / Q000473:pathology; D054457:Tissue Scaffolds
chemical_list: D020574:Proto-Oncogene Proteins c-sis
keywords: PDGF-B; adenovirus; scaffold; self-regeneration; tissue regeneration