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首页> 外文期刊>Materials science & engineering >Development of PLGA nanoparticles for sustained release of a connexin43 mimetic peptide to target glioblastoma cells
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Development of PLGA nanoparticles for sustained release of a connexin43 mimetic peptide to target glioblastoma cells

机译:PLGA纳米粒子的开发,以持续释放连接蛋白43模拟肽向靶胶质母细胞瘤细胞

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摘要

Effective therapeutic delivery of peptide and protein drugs is challenged by short in vivo half-lives due to rapid degradation. Sustained release formulations of alpha CT1, a 25 amino acid peptide drug, would afford lower dosing frequency in indications that require long term treatment, such as chronic wounds and cancers. In this study, rhodamine B (RhB) was used as a model drug to develop and optimize a double emulsion-solvent evaporation method of poly(actic-co-glycolic acid) (PLGA) nanoparticle synthesis. Encapsulation of alpha CT1 in these nanoparticles (NPs) resulted in a sustained in vitro release profile over three weeks, characterized by an initial burst release of approximately 50% of total encapsulated drug over the first three days followed by sustained release over the remaining two and a half weeks. NP uptake by glioblastoma stem cells was through endocytosis and RhB and alpha CT1 were observed in cells after at least 4 days.
机译:由于快速降解,短的体内半衰期对肽和蛋白质药物的有效治疗性传递提出了挑战。 αCT1(一种25个氨基酸的肽类药物)的缓释制剂在需要长期治疗的适应症(例如慢性伤口和癌症)中提供较低的给药频率。在这项研究中,若丹明B(RhB)被用作模型药物,以开发和优化聚(乳酸-乙醇酸共聚物)(PLGA)纳米颗粒合成的双乳液-溶剂蒸发方法。在这些纳米颗粒(NPs)中封装αCT1导致了三周的持续体外释放,其特征是在开始的三天内最初突然释放了约50%的总包封药物,然后在其余两天中持续释放。半个星期。胶质母细胞瘤干细胞通过内吞作用摄取NP,至少4天后在细胞中观察到RhB和alpha CT1。

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  • 来源
    《Materials science & engineering》 |2020年第3期|110191.1-110191.11|共11页
  • 作者

  • 作者单位

    Virginia Tech Macromol Innovat Inst Blacksburg VA USA|Mat Sci & Engn Dept Blacksburg VA USA;

    Virginia Tech Carillon Fralin Biomed Res Inst R3001 2 Riverside Circle Roanoke VA 24016 USA|Virginia Polytech Inst & State Univ Dept Biol Sci Blacksburg VA 24061 USA|Virginia Tech Carilion Sch Med Basic Sci Educ Roanoke VA USA;

    FirstString Res Inc Mt Pleasant SC USA;

    Virginia Tech Carillon Fralin Biomed Res Inst R3001 2 Riverside Circle Roanoke VA 24016 USA|Virginia Tech Fac Hlth Sci Blacksburg VA USA|Virginia Tech Carilion Sch Med Dept Internal Med Roanoke VA USA;

    Virginia Tech Carillon Fralin Biomed Res Inst R3001 2 Riverside Circle Roanoke VA 24016 USA|Virginia Tech Fac Hlth Sci Blacksburg VA USA|Wake Forest Univ Virginia Tech Sch Biomed Engn & Sci Blacksburg VA USA|Virginia Tech Carilion Sch Med Dept Emergency Med Roanoke VA USA|Ctr Heart & Regenerat Med Res Roanoke VA USA;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Drug release; alpha CT1 peptide; Glioblastoma; Cancer stem cell;

    机译:药物释放;αCT1肽;胶质母细胞瘤;癌症干细胞;

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