新型脂质-聚合物杂化纳米粒经皮递呈抗 TNFαsiRNA 和辣椒素,体内高效抑制皮肤炎症。
Topical delivery of anti-TNFα siRNA and capsaicin via novel lipid-polymer hybrid nanoparticles efficiently inhibits skin inflammation in vivo.
机构信息
College of Pharmacy & Pharmaceutical Sciences, Florida A&M University, Tallahassee 32307, USA.
出版信息
J Control Release. 2013 Aug 28;170(1):51-63. doi: 10.1016/j.jconrel.2013.04.021. Epub 2013 May 3.
The barrier properties of the skin pose a significant but not insurmountable obstacle for development of new effective anti-inflammatory therapies. The objective of this study was to design and evaluate therapeutic efficacy of anti-nociception agent Capsaicin (Cap) and anti-TNFα siRNA (siTNFα) encapsulated cyclic cationic head lipid-polymer hybrid nanocarriers (CyLiPns) against chronic skin inflammatory diseases. Physico-chemical characterizations including hydrodynamic size, surface potential and entrapment efficacies of CyLiPns were found to be 163±9nm, 35.14±8.23mV and 92% for Cap, respectively. In vitro skin distribution studies revealed that CyLiPns could effectively deliver FITC-siRNA up to 360μm skin depth. Further, enhanced (p<0.001) Cap permeation from CyLiPns was observed compared to Capsaicin-Solution and Capzasin-HP. Therapeutic efficacies of CyLiPns were assessed using imiquamod-induced psoriatic plaque like model. CyLiPns carrying both Cap and siTNFα showed significant reduced expression of TNFα, NF-κB, IL-17, IL-23 and Ki-67 genes compared to either drugs alone (p<0.05) and were in close comparison with Topgraf®. Collectively these findings support our notion that novel cationic lipid-polymer hybrid nanoparticles can efficiently carry siTNFα and Cap into deeper dermal milieu and Cap with a combination of siTNFα shows synergism in treating skin inflammation.
皮肤的屏障特性对新的有效抗炎治疗方法的发展构成了重大但并非不可逾越的障碍。本研究的目的是设计并评估辣椒素(Cap)和抗 TNFαsiRNA(siTNFα)包封的环阳离子头脂质-聚合物混合纳米载体(CyLiPns)对慢性皮肤炎症性疾病的治疗效果。物理化学特性包括 CyLiPns 的水动力粒径、表面电位和包封效率,分别为 163±9nm、35.14±8.23mV 和 92%用于 Cap。体外皮肤分布研究表明,CyLiPns 可以有效地将 FITC-siRNA 递送至 360μm 的皮肤深度。此外,与 Capsaicin-Solution 和 Capzasin-HP 相比,CyLiPns 中 Cap 的渗透得到了增强(p<0.001)。使用咪喹莫特诱导的银屑病样斑块模型评估了 CyLiPns 的治疗效果。与单独使用两种药物相比(p<0.05),载有 Cap 和 siTNFα 的 CyLiPns 显著降低了 TNFα、NF-κB、IL-17、IL-23 和 Ki-67 基因的表达,与 Topgraf® 接近。这些发现共同支持我们的观点,即新型阳离子脂质-聚合物混合纳米粒子可以有效地将 siTNFα 和 Cap 递送至更深的真皮层,并且 Cap 与 siTNFα 的组合在治疗皮肤炎症方面具有协同作用。