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    • 3. 发明公开
    • AMOPRHOUS HYALURONIC ACID-MAGNESIUM/CALCIUM POLYPHOSPHATE MICROPARTICLES FOR CARTILAGE REGENERATION AND REPAIR
    • AMOPRHOUS HYALURONIC ACID-MAGNESIUM /钙多磷酸盐微粒用于软骨再生和修复
    • EP3269400A1
    • 2018-01-17
    • EP17181497.3
    • 2017-07-14
    • NanotecMARIN GmbH
    • MÜLLER, Werner E.G.
    • A61L27/12A61L27/46
    • A61L27/54A61K9/0019A61K9/06A61K9/14A61K31/728A61K33/42A61L27/20A61L27/46A61L27/56A61L2300/112A61L2300/236A61L2300/412A61L2300/622A61L2400/06A61L2430/06C08L5/08
    • This invention concerns a biomimetic material based on energy-rich amorphous magnesium polyphosphate (Mg-polyP) microparticles that enhance cartilage synthesis and regeneration. One preferred formulation of the inventive material is a hyaluronic acid-Mg/Ca-polyP paste that can be produced from a water-soluble salt of polyP and water-soluble hyaluronic acid in the presence of water-insoluble/nearly insoluble calcium carbonate. Surprisingly, the inventor found that this cartilage-like material comprising amorphous Mg/Ca-polyP microparticles promotes the adhesion of chondrocytes and strongly upregulates the expression of the chondrocyte marker genes encoding alkaline phosphatase, collagen type 3A1, aggrecan and Sox9. The material through scavenging calcium ions (Mg 2+ /Ca 2+ exchange) and binding of the calcium-polyP to hyaluronic acid shows biomechanical properties, comparable to cartilage and thus can be used for prevention of calcium crystal formation in the synovial fluid and treatment of joint dysfunctions caused by osteoarthritis.
    • 本发明涉及基于高能量无定形聚磷酸镁(Mg-polyP)微粒的仿生材料,其增强软骨合成和再生。 本发明材料的一种优选制剂是透明质酸-Mg / Ca-polyP糊剂,其可以在水不溶性/几乎不溶的碳酸钙存在下由聚P和水溶性透明质酸的水溶性盐制备。 令人惊讶的是,发明人发现这种包含无定形Mg / Ca-polyP微粒的软骨样物质促进软骨细胞的粘附,并强烈地上调编码碱性磷酸酶,3A1型胶原蛋白,聚集蛋白聚糖和Sox9的软骨细胞标记基因的表达。 通过清除钙离子(Mg2 + / Ca2 +交换)以及钙-PolyP与透明质酸的结合,材料显示出与软骨相当的生物力学特性,因此可用于预防滑液中的钙晶体形成和治疗引起的关节功能障碍 通过骨关节炎。