3D Printing of Microenvironment-Specific Bioinspired and Exosome-Reinforced Hydrogel Scaffolds for Efficient Cartilage and Subchondral Bone Regeneration
In clinical practice, repairing osteochondral defects presents a challenge due to the varying biological properties of articular cartilages and subchondral bones. Thus, elucidating how spatial microenvironment-specific biomimetic scaffolds can be used to simultaneously regenerate osteochondral tissue is an important research topic. Herein, a novel bioinspired double-network hydrogel scaffold produced via 3D printing with tissue-specific decellularized extracellular matrix (dECM) and human adipose mesenchymal stem cell (MSC)-derived exosomes is described. The bionic hydrogel scaffolds promote rat bone marrow MSC attachment, spread, migration, proliferation, and chondrogenic and osteogenic differentiation in vitro, as determined based on the sustained release of bioactive exosomes. Furthermore, the 3D-printed microenvironment-specific heterogeneous bilayer scaffolds efficiently accelerate the simultaneous regeneration of cartilage and subchondral bone tissues in a rat preclinical model. In conclusion, 3D dECM-based microenvironment-specific biomimetics encapsulated with bioactive exosomes can serve as a novel cell-free recipe for stem cell therapy when treating injured or degenerative joints. This strategy provides a promising platform for complex zonal tissue regeneration whilst holding attractive clinical translation potential.
基金:
National Natural Science Foundation of China [82202687, 82172420, 82072486, 81972101]; Beijing Municipal Natural Science Foundation [7222213]; Capital's Funds for Health Improvement and Research of China [2022-4-20511]; Beijing Tongren Hospital Seed Funds [2021-YJJ-ZZL-008]
第一作者机构:[1]Peking Univ Third Hosp, Peking Univ, Inst Sports Med, Dept Sports Med,Beijing Key Lab Sports Injuries, Beijing 100191, Peoples R China[2]Capital Med Univ, Beijing Tongren Hosp, Ctr Foot & Ankle Surg, Beijing 100730, Peoples R China
通讯作者:
推荐引用方式(GB/T 7714):
Li Qi,Yu Huilei,Zhao Fengyuan,et al.3D Printing of Microenvironment-Specific Bioinspired and Exosome-Reinforced Hydrogel Scaffolds for Efficient Cartilage and Subchondral Bone Regeneration[J].ADVANCED SCIENCE.2023,10(26):doi:10.1002/advs.202303650.
APA:
Li, Qi,Yu, Huilei,Zhao, Fengyuan,Cao, Chenxi,Wu, Tong...&Hu, Xiaoqing.(2023).3D Printing of Microenvironment-Specific Bioinspired and Exosome-Reinforced Hydrogel Scaffolds for Efficient Cartilage and Subchondral Bone Regeneration.ADVANCED SCIENCE,10,(26)
MLA:
Li, Qi,et al."3D Printing of Microenvironment-Specific Bioinspired and Exosome-Reinforced Hydrogel Scaffolds for Efficient Cartilage and Subchondral Bone Regeneration".ADVANCED SCIENCE 10..26(2023)