Hierarchical Scaffold with Directional Microchannels Promotes Cell Ingrowth for Bone Regeneration
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Published:2024-02
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Volume:
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ISSN:2192-2640
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Container-title:Advanced Healthcare Materials
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language:en
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Short-container-title:Adv Healthcare Materials
Author:
Cheng Yaling1,
Li Xing1,
Gu Peiyang1,
Mao Ruiqi2,
Zou Yaping1,
Tong Lei1,
Li Zhulian1,
Fan Yujiang1,
Zhang Xingdong1,
Liang Jie3,
Sun Yong1ORCID
Affiliation:
1. National Engineering Research Center for Biomaterials Sichuan University 29# Wangjiang Road Chengdu 610064 China
2. College of Materials Science and Engineering Sichuan University 29# Wangjiang Road Chengdu 610064 China
3. Sichuan Testing Center for Biomaterials and Medical Devices Sichuan University 29# Wangjiang Road Chengdu 610064 China
Abstract
AbstractBone regenerative scaffolds with a bionic natural bone hierarchical porous structure provide a suitable microenvironment for cell migration and proliferation. Here, a bionic scaffold (DP‐PLGA/HAp) with directional microchannels is prepared by combining 3D printing and directional freezing technology. The 3D printed framework provides structural support for new bone tissue growth, while the directional pore embedded in the scaffolds provides an express lane for cell migration and nutrition transport, facilitating cell growth and differentiation. The hierarchical porous scaffolds achieve rapid infiltration and adhesion of bone marrow mesenchymal stem cells (BMSCs) and improve the expression of osteogenesis‐related genes. The rabbit cranial defect experiment presents significant new bone formation, demonstrating that DP‐PLGA/HAp offers an effective means to guide cranial bone regeneration. The combination of 3D printing and directional freezing technology might be a promising strategy for developing bone regenerative biomaterials.This article is protected by copyright. All rights reserved
Subject
Pharmaceutical Science,Biomedical Engineering,Biomaterials