Immune regulation enhances osteogenesis and angiogenesis using an injectable thiolated hyaluronic acid hydrogel with lithium-doped nano-hydroxyapatite (Li-nHA) delivery for osteonecrosis

Luo, Yue; Yang, Zhouyuan; Zhao, Xin; Li, Donghai; Li, Qianhao; Wei, Yang; Wan, Luyao; Tian, Meng; Kang, Pengde

doi:10.1016/j.mtbio.2024.100976

Materials Today Bio

2024

DOI: 10.1016/j.mtbio.2024.100976

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Immune regulation enhances osteogenesis and angiogenesis using an injectable thiolated hyaluronic acid hydrogel with lithium-doped nano-hydroxyapatite (Li-nHA) delivery for osteonecrosis

Yue Luo,

Zhouyuan Yang,

Xin Zhao

et al.

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2024

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Lithium-doped calcium silicate regulates the immune microenvironment and promotes M2 macrophage polarization for enhancing bone regeneration

Lin,

Chen

et al. 2024

Preprint

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Bone defects present a significant challenge in orthopedics and trauma surgery, necessitating innovative approaches to stimulate effective bone regeneration. This study investigated the potential of lithium-doped calcium silicate (LiCS) cement to enhance bone regeneration and modulate the immune microenvironment to promote tissue repair. We synthesized a LiCS ceramic powder and performed comprehensive analyses of its physicochemical properties, including phase composition, morphology, setting time, and mechanical strength. The results demonstrated that the incorporation of lithium into calcium silicate significantly increased the diametral tensile strength (DTS) and facilitated hydroxyapatite formation compared with undoped calcium silicate. In vitro assays revealed that the LiCS cement enhanced the proliferation, adhesion, and spread of Wharton's jelly mesenchymal stem cells (WJMSCs). Additionally, Li-CS cement exhibited remarkable immunomodulatory properties by reducing pro-inflammatory cytokines and increasing anti-inflammatory cytokines, promoting the polarization of macrophages towards the M2 phenotype. The presence of Li in the cement also significantly improved the osteogenic differentiation of WJMSCs, as evidenced by elevated levels of alkaline phosphatase and osteocalcin expression. These findings underscore the dual functional capabilities of the LiCS cement in enhancing osteogenesis and modulating the immune environment, making it a promising material for bone tissue engineering and regeneration.

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Lithium-doped calcium silicate regulates the immune microenvironment and promotes M2 macrophage polarization for enhancing bone regeneration

Lin,

Chen

et al. 2024

Preprint

View full text Add to dashboard Cite

show abstract

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Immune regulation enhances osteogenesis and angiogenesis using an injectable thiolated hyaluronic acid hydrogel with lithium-doped nano-hydroxyapatite (Li-nHA) delivery for osteonecrosis

Cited by 1 publication

References 76 publications

Lithium-doped calcium silicate regulates the immune microenvironment and promotes M2 macrophage polarization for enhancing bone regeneration

Lithium-doped calcium silicate regulates the immune microenvironment and promotes M2 macrophage polarization for enhancing bone regeneration

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