Autologous Versatile Vesicles-Incorporated Biomimetic Extracellular Matrix Induces Biomineralization

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Wei, Yan
Shi, Miusi
Zhang, Jinglun
Zhang, Xiaoxin
Shen, Kailun
Wang, Rui
Miron, Richard J
Xiao, Yin
Zhang, Yufeng
Griffith University Author(s)
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2020
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Abstract

Restoring extracellular matrix (ECM) with supportive and osteoinductive abilities is of great significance for bone tissue regeneration. Current approaches involving cell-based scaffolds or nanoparticle-modified biomimic-ECM have been met with additional biosafety concerns. Herein, the natural biomineralization process is first analyzed and is found that mesenchymal stem cells-derived extracellular vesicles (EVs) from early and late stages of osteoinduction play different roles during the mineralization process. The functional EVs hierarchically with blood-derived autohydrogel (AH) are then incorporated to form an osteoinductive biomimetic extracellular matrix (BECM). The alkaline phosphatase-rich EVs are released from the outer layers to induce osteoblast differentiation during early stages. Thereafter, as the degradation of AH occurred, calcium/phosphorus (Ca/P)-rich EVs are liberated to promote the nucleation of extracellular mineral crystals. Additionally, BECM contains considerable collagen fibrils that provide additional nucleation sites for crystallites deposition, thus reaching self-mineralization in situ. In conclusion, this research provides a promising, versatile mineralization-instructive platform to tackle the challenges faced in bone-tissue engineering.

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Advanced Functional Materials

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30

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21

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Physical sciences

Chemical sciences

Engineering

Science & Technology

Physical Sciences

Chemistry, Multidisciplinary

Chemistry, Physical

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Wei, Y; Shi, M; Zhang, J; Zhang, X; Shen, K; Wang, R; Miron, RJ; Xiao, Y; Zhang, Y, Autologous Versatile Vesicles-Incorporated Biomimetic Extracellular Matrix Induces Biomineralization, Advanced Functional Materials, 2020, 30 (21), pp. 2000015

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