Abstract：
:An appropriate method to bind extracellular matrix (ECM) proteins and growth factors using advanced protein engineering techniques has the potential to enhance cell proliferation and differentiation for tissue regeneration and repair. In this study we developed a method to co-immobilize non-covalently an ECM protein to three different types of growth factors: basic fibroblast growth factor (bFGF), epidermal growth factor (EGF) and single-chain vascular endothelial growth factor (scVEGF121) through a coiled-coil structure formed by helixA/helixB in order to promote angiogenesis. The designed ECM was established by fusing two repeats of elastin-derived unit (APGVGV)(12), cell-adhesive sequence (RGD), laminin-derived IKVAV sequence and collagen-binding domain (CBD) to obtain CBDEREI2. HelixA was fused to each growth factor and helixB to the engineered ECM. Human umbilical vein endothelial cells (HUVECs) were cultured on engineered ECM and growth factors connected through the coiled-coil formation between helixA and helixB. Cell proliferation and capillary tube-like formation were monitored. Moreover, the differentiated cells with high expression of Ang-2 suggested the ECM remodeling. Our approach of non-covalent coupling method should provide a protein-release control system as a new contribution in biomaterial for tissue engineering field.
journal_name
Biomaterialsjournal_title
Biomaterialsauthors
Assal Y,Mie M,Kobatake Edoi
10.1016/j.biomaterials.2013.01.067subject
Has Abstractpub_date
2013-04-01 00:00:00pages
3315-23issue
13eissn
0142-9612issn
1878-5905pii
S0142-9612(13)00097-5journal_volume
34pub_type
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