TU Wien, Institute of Chemical, Environmental and Bioscience Engineering, Vienna, Austria.
NovoArc GmbH, Vienna, Austria.
Int J Pharm. 2023 Oct 15;645:123434. doi: 10.1016/j.ijpharm.2023.123434. Epub 2023 Sep 20.
Cannabidiol (CBD) has received great scientific interest due to its numerous therapeutic applications. Degradation in the gastrointestinal (GI) tract, first-pass metabolism, and low water solubility restrain bioavailability of CBD to only 6% in current oral administration. Lipid-based nanocarriers are delivery systems that may enhance accessibility and solubility of hydrophobic payloads, such as CBD. Conventional lecithin-derived liposomes, however, have limitations regarding stability in the GI tract and long-term storage. Ether lipid-based archaeosomes may have the potential to overcome these problems due to chemical and structural uniqueness. In this study, we compared lecithin-derived liposomes with archaeosomes in their applicability as an oral delivery system of CBD. We evaluated drug load, storage stability, stability in a simulated GI tract, and in vitro particle uptake in Caco-2 cells. Loading capacity was 6-fold higher in archaeosomes than conventional liposomes while providing a stable formulation over six months after lyophilization. In a simulated GI tract, CBD recovery in archaeosomes was 57 ± 3% compared to only 34 ± 1% in conventional liposomes and particle uptake in Caco-2 cells was enhanced up to 6-fold. Our results demonstrate that archaeosomes present an interesting solution to tackle current issues of oral CBD formulations due to improved stability and endocytosis.
由于其众多的治疗应用,大麻二酚 (CBD) 引起了极大的科学兴趣。在胃肠道 (GI) 中降解、首过代谢和低水溶性将 CBD 的生物利用度限制在当前口服给药的 6%。基于脂质的纳米载体是一种可能提高疏水性有效载荷(如 CBD)的可及性和溶解度的递送系统。然而,常规的卵磷脂衍生脂质体在 GI 道中的稳定性和长期储存方面存在局限性。基于醚脂质的类病毒体由于其化学和结构的独特性,可能具有克服这些问题的潜力。在这项研究中,我们比较了卵磷脂衍生的脂质体与类病毒体作为 CBD 口服递送系统的适用性。我们评估了药物负载、储存稳定性、在模拟胃肠道中的稳定性以及在 Caco-2 细胞中的体外颗粒摄取。与传统脂质体相比,类病毒体的载药量高 6 倍,在冻干后 6 个月内仍提供稳定的配方。在模拟胃肠道中,与传统脂质体相比,类病毒体中 CBD 的回收率为 57±3%,而只有 34±1%,并且 Caco-2 细胞中的颗粒摄取增加了 6 倍。我们的结果表明,由于稳定性和内吞作用的提高,类病毒体为解决当前 CBD 口服制剂的问题提供了一个有趣的解决方案。
Int J Pharm. 2023-10-15
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