期刊
JOURNAL OF TISSUE ENGINEERING
卷 12, 期 -, 页码 -出版社
SAGE PUBLICATIONS INC
DOI: 10.1177/20417314211004211
关键词
Developmental engineering; bone defect reconstruction; endochondral ossification; hypertrophic cartilage; bone tissue engineering
资金
- National Natural Science Foundation of China [81871571]
- Shanghai Pujiang Program [2019PJD023]
Traditional bone tissue engineering strategies face limitations in vascularization and bone regeneration, while engineering cartilaginous constructs mimicking embryonic processes offer a unique ability to promote bone regeneration. These developmentally engineered constructs can serve as transient biomimetic templates for facilitating bone regeneration in critical-sized defects.
Traditional bone tissue engineering (BTE) strategies induce direct bone-like matrix formation by mimicking the embryological process of intramembranous ossification. However, the clinical translation of these clinical strategies for bone repair is hampered by limited vascularization and poor bone regeneration after implantation in vivo. An alternative strategy for overcoming these drawbacks is engineering cartilaginous constructs by recapitulating the embryonic processes of endochondral ossification (ECO); these constructs have shown a unique ability to survive under hypoxic conditions as well as induce neovascularization and ossification. Such developmentally engineered constructs can act as transient biomimetic templates to facilitate bone regeneration in critical-sized defects. This review introduces the concept and mechanism of developmental BTE, explores the routes of endochondral bone graft engineering, highlights the current state of the art in large bone defect reconstruction via ECO-based strategies, and offers perspectives on the challenges and future directions of translating current knowledge from the bench to the bedside.
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