Journal
COLLOIDS AND SURFACES B-BIOINTERFACES
Volume 231, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.colsurfb.2023.113566
Keywords
Anisotropic structures; Osteogenesis; Bone tissue engineering; Biomaterials; Signaling pathways
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Bone defects pose challenges to healthcare systems, especially with the aging population. While biomaterials for bone fillers and scaffolds have been developed, the need for bone-mimetic materials still remains. Incorporating anisotropic structures in bone-facilitated scaffolds is crucial for better outcomes. Although various approaches have been used to create anisotropic micro/nanostructures, biomimetic bone anisotropic structures are still in the early stages of development.
Bone defects are a challenge to healthcare systems, as the aging population experiences an increase in bone defects. Despite the development of biomaterials for bone fillers and scaffolds, there is still an unmet need for a bone-mimetic material. Cortical bone is highly anisotropic and displays a biological liquid crystalline (LC) arrangement, giving it exceptional mechanical properties and a distinctive microenvironment. However, the biofunctions, cell-tissue interactions, and molecular mechanisms of cortical bone anisotropic structure are not well understood. Incorporating anisotropic structures in bone-facilitated scaffolds has been recognised as essential for better outcomes. Various approaches have been used to create anisotropic micro/nanostructures, but biomimetic bone anisotropic structures are still in the early stages of development. Most scaffolds lack features at the nanoscale, and there is no comprehensive evaluation of molecular mechanisms or characterisation of calcium secretion. This manuscript provides a review of the latest development of anisotropic designs for osteogenesis and discusses current findings on cell-anisotropic structure interactions. It also emphasises the need for further research. Filling knowledge gaps will enable the fabrication of scaffolds for improved and more controllable bone regeneration.
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