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Disulfiram-loaded mixed nanoparticles with high drug-loading and plasma stability by reducing the core crystallinity for intravenous delivery
Journal of Colloid and Interface Science ( IF 9.4 ) Pub Date : 2018-05-30 , DOI: 10.1016/j.jcis.2018.05.057
Xuezhi Zhuo , Tian Lei , Linlin Miao , Wei Chu , Xiaowen Li , Lifeng Luo , Jingxin Gou , Yu Zhang , Tian Yin , Haibing He , Xing Tang

To develop an injectable formulation and improve the stability of disulfiram (DSF), DSF was encapsulated into mixed nanoparticles (DSF-NPs) through a high-pressure homogenization method. The Flory-Huggins interaction parameters (χFH) were calculated to predict the miscibility between DSF and the hydrophobic core, resulting in PCL5000 selected as the hydrophobic block to encapsulate the DSF, as PCL5000 had a lower χFH 3.39 and the drug loading of the nanoparticles prepared by mPEG5000-PCL5000 was relatively higher. mPEG5000-PCL5000 and PCL5000 were blended to reduce the leakage of DSF during preparation, as well as increase the stability of the nanoparticles. The cargo-loading capacity of the nanoparticles was improved from 3.35% to 5.50% by reducing the crystallinity of the PCL nanoparticle core, and the crystallinity decreased from 51.13% to 25.15% after adding medium chain triglyceride (MCT). The DSF-NPs prepared by the above method had a small particle size of 98.1 ± 10.54 nm, with a polydispersity index (PDI) of 0.036, as well as drug loading of 5.50%. Furthermore, DSF-NPs containing MCT showed higher stability than DSF-NPs without MCT and DSF-sol (DSF dissolved in Cremophor EL and ethanol) in water and 90% plasma-containing PBS. The pharmacokinetics proved that DSF-NPs containing MCT enhanced the DSF concentration in the blood. Finally, DSF-NPs effectively inhibited H22 xenograft tumor growth in vivo.



中文翻译:

通过降低用于静脉内递送的核心结晶度,具有高载药量和血浆稳定性的负载双硫仑的混合纳米颗粒

为了开发可注射制剂并提高双硫仑(DSF)的稳定性,通过高压均质方法将DSF封装到混合纳米颗粒(DSF-NPs)中。的弗洛里-赫金斯相互作用参数(χ FH)进行了计算,预测DSF和疏水核心之间的互溶性,从而导致PCL 5000选择作为疏水性嵌段以包封DSF,如PCL 5000具有更低的χ FH 3.39,载药量由mPEG 5000 -PCL 5000制备的纳米颗粒的相对较高。mPEG 5000 -PCL 5000和PCL 5000将其掺混以减少制备过程中DSF的泄漏,并增加纳米颗粒的稳定性。通过降低PCL纳米颗粒核的结晶度,纳米颗粒的载物能力从3.35%提高到5.50%,加入中链甘油三酸酯(MCT)后,结晶度从51.13%降低到25.15%。通过上述方法制备的DSF-NP具有98.1±10.54nm的小粒径,0.036的多分散指数(PDI)以及5.50%的载药量。此外,含有MCT的DSF-NP比没有MCT和DSF-sol(DSF-sol溶解在Cremophor EL和乙醇中的DSF)在水和含90%血浆的PBS中显示出更高的稳定性。药代动力学证明,含有MCT的DSF-NP可增强血液中的DSF浓度。最后,

更新日期:2018-05-30
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