靶向水凝胶微球对软骨损伤的精确润滑和保护。

Precise Lubrication and Protection of Cartilage Damage by Targeting Hydrogel Microsphere.

机构信息

Laboratory for Advanced Lubricating Materials, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai, 201210, China.

University of Chinese Academy of Sciences, Beijing, 100049, China.

出版信息

Adv Mater. 2024 Oct;36(40):e2405943. doi: 10.1002/adma.202405943. Epub 2024 Aug 18.

Abstract

Osteoarthritis (OA) is a degenerative bone and joint disease characterized by decreased cartilage lubrication, leading to continuous wear and ultimately irreversible damage. This situation is particularly challenging for early-stage OA, as current bio-lubricants lack precise targeting for small inflammatory lesions. In this work, an antibody-mediated targeting hydrogel microspheres (HMS) is developed to precisely lubricate the local injury site of cartilage and prevent the progression of early OA. Anti-Collagen type I (Anti-Col1) is an antibody that targets cartilage injury sites in early OA stages. It is anchored on a HMS matrix made of Gelatin methacrylate (GelMA) and poly (sulfobetaine methacrylate) (PSBMA) to create targeted HMS (T-G/S HMS). The T-G/S HMS's high hydrophilicity, along with the dynamic interaction between its surficial Anti-Col1 and the Col1 on cartilage injury site, ensures its precise and effective lubrication of early OA lesions. Consequently, injecting T-G/S HMS into rats with early OA significantly slows disease progression and reduces symptoms. In conclusion, the developed injectable targeted lubricating HMS and the precisely targeted lubrication strategy represent a promising, convenient technique for treating OA, particularly for slowing the early-stage OA progression.

摘要

骨关节炎(OA)是一种退行性骨和关节疾病,其特征是软骨润滑减少,导致持续磨损,最终不可逆转地损伤。对于早期 OA 来说,这种情况尤其具有挑战性,因为目前的生物润滑剂缺乏针对小炎症病变的精确靶向性。在这项工作中,开发了一种抗体介导的靶向水凝胶微球(HMS),以精确润滑软骨的局部损伤部位,并防止早期 OA 的进展。抗胶原 I 型(Anti-Col1)抗体是一种针对早期 OA 阶段软骨损伤部位的抗体。它锚定在由甲基丙烯酸明胶(GelMA)和聚(磺酸甜菜碱甲基丙烯酸酯)(PSBMA)制成的 HMS 基质上,以创建靶向 HMS(T-G/S HMS)。T-G/S HMS 的高亲水性,以及其表面 Anti-Col1 与软骨损伤部位的 Col1 之间的动态相互作用,确保了其对早期 OA 病变的精确和有效的润滑。因此,将 T-G/S HMS 注射到早期 OA 大鼠中,可显著减缓疾病进展并减轻症状。总之,开发的可注射靶向润滑 HMS 及其精确靶向润滑策略为治疗 OA 提供了一种有前途的、方便的技术,特别是可以减缓早期 OA 的进展。

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