Volume 21, Issue 3 2407758
Research Article

Multifunctional Scaffold Comprising Metal–Organic Framework, Hydrogel, and Demineralized Bone Matrix for the Treatment of Steroid-Induced Femoral Head Necrosis

Liangjie Bai

Liangjie Bai

Department of Joint Surgery, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, 250021 China

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Xiaolei Zhang

Xiaolei Zhang

Department of Joint Surgery, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, 250021 China

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Wei Shen

Wei Shen

Department of Neurology, Linyi People's Hospital, Shandong University, Linyi, Shandong, 276007 China

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Peng Wang

Peng Wang

Department of Joint Surgery, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, 250021 China

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Xin Yin

Xin Yin

Department of Joint Surgery, Linyi People's Hospital, Shandong University, Linyi, Shandong, 276007 China

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Jianing Liu

Jianing Liu

Department of Central Laboratory, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, 250021 China

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Hailun Xu

Hailun Xu

Department of Joint Surgery, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, 250021 China

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Bing Liu

Corresponding Author

Bing Liu

Department of Oral and Maxillofacial Surgery, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, 250021 China

School of Stomatology, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, Shandong, 250021 China

Medical Science and Technology Innovation Center, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, Shandong, 250117 China

E-mail: [email protected]; [email protected]; [email protected]

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Zhentao Man

Corresponding Author

Zhentao Man

Department of Joint Surgery, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, 250021 China

Endocrine and Metabolic Diseases Hospital of Shandong First Medical University, Jinan, 250021 China

Shandong Institute of Endocrine and Metabolic Diseases, Jinan, Shandong, 250062 China

College of Sports Medicine and Rehabilitation, Shandong First Medical University & Shandong Academy of Medical Sciences, Taian, Shandong, 271016 China

E-mail: [email protected]; [email protected]; [email protected]

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Wei Li

Corresponding Author

Wei Li

Department of Joint Surgery, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, 250021 China

College of Sports Medicine and Rehabilitation, Shandong First Medical University & Shandong Academy of Medical Sciences, Taian, Shandong, 271016 China

E-mail: [email protected]; [email protected]; [email protected]

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First published: 22 November 2024
Citations: 9

Abstract

Overproduction of reactive oxygen species (ROS) results in oxidative stress, a critical factor in the pathogenesis of steroid-induced osteonecrosis of the femoral head (SONFH). Excess ROS not only hinders the osteogenic differentiation of bone marrow-derived mesenchymal stem cells (BMSCs) but also impairs mitochondrial structure and function, resulting in irreversible cellular damage. Herein, a biomimetic multifunctional scaffold comprising Zn-modified metal–organic framework 818 (Zn-MOF-818) loaded with deferoxamine (DFO), gelatin methacryloyl (GelMA) hydrogel, and demineralized bone matrix (DBM) is shown to scavenge excess ROS, promote angiogenesis, and regulate immunity. Introduced Zn significantly enhances the superoxide dismutase- and catalase-like activities of MOF-818, which increases ROS-scavenging efficiency. Zn-MOF-818 disrupts the vicious intracellular cycle of mitochondrial dysfunction and ROS accumulation by enhancing mitophagy, stabilizing mitochondrial function, and upregulating antioxidant genes. Additionally, Zn-MOF-818 facilitates the polarization of macrophages toward the M2 phenotype and alleviates inflammation, creating an advantageous immune microenvironment for osteogenic differentiation of BMSCs. The release of DFO, an activator of the HIF-1α pathway, and Zn2+ from Zn-MOF-818, along with the secretion of various cytokines from DBM (such as bone morphogenetic proteins and vascular endothelial growth factors), enhances angiogenesis and osteogenesis. This scaffold targets multiple factors concurrently, offering a promising new approach for treating SONFH.

Conflict of Interest

The authors declare no conflict of interest.

Data Availability Statement

The data that support the findings of this study are available from the corresponding author upon reasonable request.

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