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Time-responsive osteogenic niche of stem cells: A sequentially triggered, dual-peptide loaded, alginate hybrid system for promoting cell activity and osteo-differentiation

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机构: [a]Central Laboratory, School and Hospital of Stomatology, Peking University, National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing 100081, China [b]Laboratory for Biomaterials and Regenerative Medicine, Academy for Advanced Interdisciplinary Studies, Peking University, Beijing 100871, China [c]Department of Stomatology, Beijing Anzhen Hospital, Capital Medical University, Beijing 100029, China [d]Department of Stomatology, Xuanwu Hospital, Capital Medical University, Beijing 100053, China [e]Department of Oral Pathology, School and Hospital of Stomatology, Peking University, Beijing 100081, China [f]Department of Oral and Maxillofacial Surgery, West China School and Hospital of Stomatology, Sichuan University, Chengdu 610041, China [g]Wake Forest Institute for Regenerative Medicine, Wake Forest School of Medicine, Winston-Salem, NC 27157, USA
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关键词: Nanocarriers Multi-drug delivery Organoids Injectable hydrogel 3D cell culture Stem cell niche

摘要:
The efficacy of stem cell-based bone tissue engineering has been hampered by cell death and limited fate control. A smart cell culture system with the capability of sequentially delivering multiple factors in specific growth stages, like the mechanism of the natural extracellular matrix modulating tissue formation, is attractive for enhancing cell activity and controlling cell fate. Here, a bone forming peptide-1 (BFP-1)-laden mesoporous silica nanoparticles (pep@MSNs) incorporated adhesion peptide, containing the arginine-glycine-aspartic acid (RGD) domain, modified alginate hydrogel (RA) system (pep@MSNs-RA) was developed to promote the activity and stimulate osteo-differentiation of human mesenchymal stem cells (hMSCs) in sequence. The survivability and proliferation of hMSCs were enhanced in the adhesion peptide modified hydrogel. Next, BFP-1 released from pep@MSNs induced hMSCs osteo-differentiation after the proliferation stage. Moreover, BFP-1 near the cells was self captured by the additional cell-peptide cross-linked networks formed by the ligands (RGD) binding to receptors on the cell surface, leading to long-term sustained osteo-stimulation of hMSCs. The results suggest that independent and sequential stimulation in proliferation and osteo-differentiation stages could synergistically enhance the survivability, expansion, and osteogenesis of hMSCs, as compared to stimulating alone or simultaneously. Overall, this study provided a new and valid strategy for stem cell expansion and osteo-differentiation in 2D or 3D culture systems, possessing potential applications in 3D bio-printing and tissue regeneration. (C) 2018 Elsevier Ltd. All rights reserved.

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出版当年[2017]版:
大类 | 1 区 工程技术
小类 | 1 区 工程:生物医学 1 区 材料科学:生物材料
最新[2023]版:
大类 | 1 区 医学
小类 | 1 区 工程:生物医学 1 区 材料科学:生物材料
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出版当年[2016]版:
Q1 MATERIALS SCIENCE, BIOMATERIALS Q1 ENGINEERING, BIOMEDICAL
最新[2023]版:
Q1 ENGINEERING, BIOMEDICAL Q1 MATERIALS SCIENCE, BIOMATERIALS

影响因子: 最新[2023版] 最新五年平均 出版当年[2016版] 出版当年五年平均 出版前一年[2015版] 出版后一年[2017版]

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第一作者机构: [a]Central Laboratory, School and Hospital of Stomatology, Peking University, National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing 100081, China [b]Laboratory for Biomaterials and Regenerative Medicine, Academy for Advanced Interdisciplinary Studies, Peking University, Beijing 100871, China
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通讯机构: [a]Central Laboratory, School and Hospital of Stomatology, Peking University, National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing 100081, China [c]Department of Stomatology, Beijing Anzhen Hospital, Capital Medical University, Beijing 100029, China [g]Wake Forest Institute for Regenerative Medicine, Wake Forest School of Medicine, Winston-Salem, NC 27157, USA
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