Novel thymidine- or uridine-based nucleolipids, containing one hydrophilic oligo(ethylene glycol) chain and one or two oleic acid residues (called ToThy, HoThy and DoHu), have been synthesized with the aim to develop bio-compatible nanocarriers for drug delivery and/or produce pro-drugs. Microstructural characterization of their aggregates has been determined in pure water and in pseudo-physiological conditions through DLS and SANS experiments. In all cases stable vesicles, with mean hydrodynamic radii ranging between 120 nm and 250 nm have been revealed. Biological validation of the nucleolipidic nanocarriers was ensured by evaluation of their toxicological profiles, performed by administration of the nanoaggregates to a panel of different cell lines. ToThy exhibited a weak cytotoxicity and, at high concentration, some ability to interfere with cell viability and/or proliferation. In contrast, DoHu and HoThy exhibited no toxicological relevance, behaving similarly to POPC-based liposomes, widely used for systemic drug delivery. Taken together, these results show nucleolipid-based nanocarriers as finely tunable, multi-functional self-assembling materials of interest for the in vivotransport of biomolecules or drugs.
我们合成了新型胸腺
嘧啶或
尿苷核脂,它们含有一条亲
水性低聚(
乙二醇)链和一个或两个
油酸残基(称为 ToThy、HoThy 和 DoHu),目的是开发
生物兼容的纳米载体,用于药物输送和/或生产原药。通过 DLS 和
SANS 实验,确定了它们的聚集体在纯
水和假生理条件下的微观结构特征。在所有情况下都发现了稳定的囊泡,其平均流体力学半径介于 120 纳米和 250 纳米之间。核脂纳米载体的
生物学验证是通过评估其毒理学特征来实现的。ToThy表现出微弱的细胞毒性,在高浓度时还会干扰细胞的活力和/或增殖。相比之下,DoHu 和 HoThy 则没有毒理学相关性,其表现与广泛用于全身给药的基于 POPC 的脂质体相似。综上所述,这些结果表明核脂质纳米载体是一种可微调的多功能自组装材料,可用于
生物分子或药物的体内转运。