Bidirectional modulation of glycolysis using a multifunctional nanocomposite hydrogel promotes bone fracture healing in type 2 diabetes mellitus

IF 18 1区医学 Q1 ENGINEERING, BIOMEDICAL

Bioactive Materials Pub Date : 2025-04-08 DOI:10.1016/j.bioactmat.2025.03.020

Shengming Zhang , Weixian Hu , Yanzhi Zhao , Yuheng Liao , Kangkang Zha , Wenqian Zhang , Chenyan Yu , Jiewen Liao , Hui Li , Wu Zhou , Faqi Cao , Bobin Mi , Guohui Liu

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Abstract

Fracture healing in patients with type 2 diabetes mellitus (T2D) is markedly impaired, characterized by a prolonged inflammation phase and defective osteoblast differentiation at the fracture site. In this study, we identified aberrant cellular glycolysis at T2D fracture sites, with bone marrow mesenchymal stem cells (BMSCs) exhibiting suppressed glycolysis and macrophages displaying enhanced glycolysis, mediated by the dysregulation of hypoxia-inducible factor-1α (HIF-1α). To rectify these metabolic imbalances, we developed a multifunctional nanocomposite PN@MHV hydrogel. Myricitrin, a flavonoid glycoside, forms the MHV hydrogel by cross-linking with HA-PBA and PVA via hydrogen bonds, and upregulates glycolysis through HIF-1α, thus promoting osteoblast differentiation under high glucose environment. To further regulate the inflammatory microenvironment, we incorporated nanoparticles loaded with PX-478, a HIF-1α specific inhibitor, into the hydrogel, with folic acid covalently modified to target proinflammatory M1 macrophages. This PN@MHV hydrogel bidirectionally regulated glycolysis via HIF-1α, enhancing osteoblast differentiation while attenuating macrophage-mediated inflammation. Comprehensive in vitro and in vivo experiments in a T2D fracture mouse model confirmed the hydrogel's ability to improve the inflammatory microenvironment and accelerate bone healing. Our findings underscore the therapeutic potential of targeting cellular glycolysis as a promising approach for enhancing fracture healing in diabetic patients.

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来源期刊

Bioactive Materials Biochemistry, Genetics and Molecular Biology-Biotechnology

CiteScore

28.00

自引率

6.30%

发文量

436

审稿时长

20 days

期刊介绍： Bioactive Materials is a peer-reviewed research publication that focuses on advancements in bioactive materials. The journal accepts research papers, reviews, and rapid communications in the field of next-generation biomaterials that interact with cells, tissues, and organs in various living organisms. The primary goal of Bioactive Materials is to promote the science and engineering of biomaterials that exhibit adaptiveness to the biological environment. These materials are specifically designed to stimulate or direct appropriate cell and tissue responses or regulate interactions with microorganisms. The journal covers a wide range of bioactive materials, including those that are engineered or designed in terms of their physical form (e.g. particulate, fiber), topology (e.g. porosity, surface roughness), or dimensions (ranging from macro to nano-scales). Contributions are sought from the following categories of bioactive materials: Bioactive metals and alloys Bioactive inorganics: ceramics, glasses, and carbon-based materials Bioactive polymers and gels Bioactive materials derived from natural sources Bioactive composites These materials find applications in human and veterinary medicine, such as implants, tissue engineering scaffolds, cell/drug/gene carriers, as well as imaging and sensing devices.