Electrical stimulation enhances cellular activity, promoting tissue regeneration and repair. However, specific cells and maintaining a stable energy supply are challenges for precise cell electrical stimulation therapy. Here, force-electric conversion hydrogel microspheres (Piezo@CR MPs) is devloped to induce specific stem cell aggregation and promote chondrogenic differentiation through localized electrical stimulation. These MPs contain barium titanate (BT) nanoparticles embedded in hyaluronic acid methacrylate hydrogel MPs, with a polydopamine (pDA) coating bound to stem cell recruitment peptides (CR) via pi-pi conjugation and electrostatic forces. Piezo@CR MPs convert pressure (ultrasound) into electrical stimulation, directing BMSCs for colonization and chondrogenesis. In vitro, directionally migrated stem cells almost covered the Piezo@CR MP surface, generating up to 451 mV of electrical output that enhanced chondrogenic differentiation. In a rabbit osteochondral defect model, Piezo@CR MPs promoted cartilage regeneration, nearly resembling native cartilage. In a rat osteoarthritis model, they reduced cartilage degeneration and improved behavioral outcomes. Additionally, Piezo@CR MPs promoted cartilage regeneration by driving the influx of extracellular calcium and activating the p38 mitogen-activated protein kinase (MAPK) pathway. In conclusion, Piezo@CR MPs offer a new approach for precise cell type electrical stimulation therapy in treating of cartilage injuries and degeneration.
基金:
Beijing public health high level talent [leader-02-23]; Beijing public health high level talent (Discipline) [2023]; Beijing Hospitals Authority's Ascent Plan [82272473, 52273133]; National Natural Science Foundation of China [2020YFA0908200]; National Key Research and Development Program of China [-02-23]; Talent Development Plan for High-level Public Health Technical Personnel Project [L212010]; Beijing Natural Science Foundation Haidian Original Innovation Joint Fund [2024-YJJ-BJL-016]; Beijing Tongren Hospital Top Talent Project [2022XD055]; Shanghai Municipal Health and Family Planning Commission [23015820800]; Science and Technology Innovation Action Plan" Domestic Science and Technology Cooperation Project of Shanghai [2023M742361, GZB20230443]; China Postdoctoral Science Foundation [YGLX202505]; Cooperation of medicine and engineering project of Yangfan Plan
第一作者机构:[1]Capital Med Univ, Beijing Tongren Hosp, Dept Foot & Ankle Surg, Beijing 100730, Peoples R China[2]Shanghai Jiao Tong Univ, Ruijin Hosp, Shanghai Inst Traumatol & Orthoped, Sch Med,Dept Orthopaed Shanghai,Key Lab Prevent &, Shanghai 200025, Peoples R China
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推荐引用方式(GB/T 7714):
Han Zeyu,Wang Fan,Xiong Wei,et al.Precise Cell Type Electrical Stimulation Therapy Via Force-electric Hydrogel Microspheres for Cartilage Healing[J].ADVANCED MATERIALS.2024,doi:10.1002/adma.202414555.
APA:
Han, Zeyu,Wang, Fan,Xiong, Wei,Meng, Chen,Yao, Yubin...&Zhang, Mingzhu.(2024).Precise Cell Type Electrical Stimulation Therapy Via Force-electric Hydrogel Microspheres for Cartilage Healing.ADVANCED MATERIALS,,
MLA:
Han, Zeyu,et al."Precise Cell Type Electrical Stimulation Therapy Via Force-electric Hydrogel Microspheres for Cartilage Healing".ADVANCED MATERIALS .(2024)