ACS Appl Mater Interfaces:聚多巴胺介导脂质体释放地塞米松和米诺环素可用于种植体表面的抗菌抗炎

2018-05-09 MedSci MedSci原创

减少植入材料引起的早期非细菌性炎症和植入物-基台界面周围的细菌污染导致的感染可以大大降低种植失败率。在这项工作中,我们提出了一个简单制备抗炎和抗菌植体表面的策略。首先用聚多巴胺涂布聚苯乙烯培养板的表面,然后用地塞米松加载有米诺环素的脂质体(Dex/Mino脂质体)进行修饰,通过接触角测角法,石英晶体微量天平和荧光显微镜进行验证。结果显示,Dex/Mino脂质体分散在功能表面上,药物释放动力学表现出

减少植入材料引起的早期非细菌性炎症和植入物-基台界面周围的细菌污染导致的感染可以大大降低种植失败率。在这项工作中,我们提出了一个简单制备抗炎和抗菌植体表面的策略。

首先用聚多巴胺涂布聚苯乙烯培养板的表面,然后用地塞米松加载有米诺环素的脂质体(Dex/Mino脂质体)进行修饰,通过接触角测角法,石英晶体微量天平和荧光显微镜进行验证。结果显示,Dex/Mino脂质体分散在功能表面上,药物释放动力学表现出地塞米松和米诺环素的持续释放。该结果表明Dex/Mino脂质体修饰表面具有良好的生物相容性。


此外,脂质体地塞米松可在脂多糖刺激的人牙龈成纤维细胞和人间充质干细胞中减少促炎介质的表达(特别是IL-6和TNF-α)。脂质体米诺环素还可防止牙龈卟啉单胞菌(革兰氏阴性菌)和变形链球菌(革兰氏阳性菌)的粘附和增殖。

综上所述,该研究结果表明,研究人员开发了一种抗炎和抗菌表面,使用多巴胺作为培养基并结合了一种脂质体递送装置,该装置可降低植入失败率。因此,本研究所提出的表面改性策略可用于植入材料的生物功能化。

原始出处:

Xu X, Wang L, et al., Facile and Versatile Strategy for Construction of Anti-Inflammatory and Antibacterial Surfaces with Polydopamine-Mediated Liposomes Releasing Dexamethasone and Minocycline for Potential Implant Applications. ACS Appl Mater Interfaces. 2017 Dec 13;9(49):43300-43314. doi: 10.1021/acsami.7b06295. Epub 2017 Nov 30.

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    2018-12-23 huangdf
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    2018-09-14 shanyongle
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    2018-05-11 yaanren
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