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Chemical modulation of siRNA lipophilicity for efficient delivery.
Journal of Controlled Release ( IF 10.5 ) Pub Date : 2019-06-21 , DOI: 10.1016/j.jconrel.2019.06.022
Wanyi Tai 1
Affiliation  

siRNA holds tremendous promise to knockdown the disease-promoting gene in any cell type that it can be delivered. The biggest challenge facing the clinical translation of siRNA is to overcome the barriers that impede the in vivo delivery. siRNA is a highly hydrophilic macromolecule with poor pharmacological properties. The critical requirement for broadening the systemic siRNA delivery is to confer on siRNA the 'drug-like' properties such as the lipophilicity. In comparison with unmodified siRNA, lipophilic siRNA has a better cell-membrane compatibility and permeability. The lipophilic siRNA can also hijack the lipid trafficking pathway and natural drug carrier albumin to achieve an advanced systemic delivery, with properties including the tissue targeting, long circulation half-life, the improved pharmacokinetic profile, bioavailability and in vivo safety. In this review, we summarized the recent progress on lipophilic siRNA development, in particular about the chemical methods to manipulate siRNA lipophilicity. The covalent and noncovalent methodologies, including backbone modification, lipid conjugation, chelation method and others, are discussed. We place particular emphasis on the most clinically advanced method, the lipid siRNA conjugation. The application of lipophilic siRNA on nanoparticle delivery system is also covered.

中文翻译:

siRNA亲脂性的化学调节,可实现高效递送。

siRNA具有巨大的潜力,可以在任何可以传递的细胞类型中敲低促进疾病的基因。siRNA的临床翻译面临的最大挑战是克服阻碍体内递送的障碍。siRNA是一种高度亲水的大分子,具有较差的药理特性。扩大全身性siRNA传递的关键要求是赋予siRNA像药物一样的特性,例如亲脂性。与未修饰的siRNA相比,亲脂性siRNA具有更好的细胞膜相容性和通透性。亲脂性siRNA还可以劫持脂质运输途径和天然药物载体白蛋白,以实现先进的全身递送,其特性包括靶向组织,长循环半衰期,改善的药代动力学特性,生物利用度和体内安全性。在这篇综述中,我们总结了亲脂性siRNA开发的最新进展,特别是关于操纵siRNA亲脂性的化学方法。讨论了共价和非共价方法,包括骨架修饰,脂质结合,螯合方法等。我们特别强调最临床上最先进的方法,即脂质siRNA偶联。还介绍了亲脂性siRNA在纳米颗粒递送系统上的应用。我们特别强调最临床上最先进的方法,即脂质siRNA偶联。还介绍了亲脂性siRNA在纳米颗粒递送系统上的应用。我们特别强调最临床上最先进的方法,即脂质siRNA偶联。还介绍了亲脂性siRNA在纳米颗粒递送系统上的应用。
更新日期:2019-06-21
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