4.7 Review

Emerging zero-dimensional to four-dimensional biomaterials for bone regeneration

期刊

JOURNAL OF NANOBIOTECHNOLOGY
卷 20, 期 1, 页码 -

出版社

BMC
DOI: 10.1186/s12951-021-01228-1

关键词

Zero/one/two/three/four-dimensional biomaterial; Tissue engineering; Bone regeneration

资金

  1. National Natural Science Foundation of China [81672143, 82072417, 82002339]
  2. Shanghai Pujiang Program [2020PJD039]

向作者/读者索取更多资源

Bones are highly sophisticated tissues with remarkable potential for regeneration. Novel biomaterials designed to mimic bone microenvironment have significantly accelerated bone healing. These biomaterials are categorized as zero-dimensional to four-dimensional based on their dimensional structure and functional mechanism.
Bone is one of the most sophisticated and dynamic tissues in the human body, and is characterized by its remarkable potential for regeneration. In most cases, bone has the capacity to be restored to its original form with homeostatic functionality after injury without any remaining scarring. Throughout the fascinating processes of bone regeneration, a plethora of cell lineages and signaling molecules, together with the extracellular matrix, are precisely regulated at multiple length and time scales. However, conditions, such as delayed unions (or nonunion) and critical-sized bone defects, represent thorny challenges for orthopedic surgeons. During recent decades, a variety of novel biomaterials have been designed to mimic the organic and inorganic structure of the bone microenvironment, which have tremendously promoted and accelerated bone healing throughout different stages of bone regeneration. Advances in tissue engineering endowed bone scaffolds with phenomenal osteoconductivity, osteoinductivity, vascularization and neurotization effects as well as alluring properties, such as antibacterial effects. According to the dimensional structure and functional mechanism, these biomaterials are categorized as zero-dimensional, one-dimensional, twodimensional, three-dimensional, and four-dimensional biomaterials. In this review, we comprehensively summarized the astounding advances in emerging biomaterials for bone regeneration by categorizing them as zero-dimensional to four-dimensional biomaterials, which were further elucidated by typical examples. Hopefully, this review will provide some inspiration for the future design of biomaterials for bone tissue engineering.

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