Journal
ACS BIOMATERIALS SCIENCE & ENGINEERING
Volume -, Issue -, Pages 1808-1814Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsbiomaterials.1c007131808
Keywords
collagen-like peptide; hydroxyapatite; self-assembly; bonelike material; oriented crystallization
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Funding
- National Key R & D Program of China [2018YFC1105100]
- National Natural Science Foundation of China [22077114, 21771160, 21625105]
- Fundamental Research Funds for the Central Universities [2016QN810205]
- Scientific User Facilities Division [DE-AC02-05CH11231]
- Department of Energy by Battelle [DE-AC05-76RL01830]
- Lawrence Berkeley National Laboratory Office of Basic Energy Sciences
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The self-assembled fibrils of collagenlike peptide (POG10) and oriented mineralization of HAP crystals are used to produce bonelike composite materials, inspired by the molecular structure of collagen-I, which can eliminate the gap spaces in collagen-I fibrils.
Controlling oriented crystallization is key to producing bonelike composite materials with a well-organized structure. However, producing this type of composite material using synthetic biopolymers as scaffolds is challenging. Inspired by the molecular structure of collagen-I, a collagenlike peptide-(Pro-Hyp-Gly)10 (POG10)-was designed to produce self-assembled fibrils that resemble the structure of collagen-I fibrils. In addition, the oriented mineralization of HAP crystals is formed in the fibrils that reproduces a bonelike material similar to collagen-I fibril mineralization. Unlike collagen-I fibrils, POG10 fibrils do not contain gap spaces. The molecular simulation results indicate that in addition to space confinement, the molecular field generated by POG10 can also confine the orientation of HAP, enriching our understanding of physical confinement and shedding light on the design of synthetic biopolymer scaffolds for bonelike material fabrication.
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