开发低密度脂蛋白受体向性脂质体,以增强缺血/反环境中的积累
Shintaro Yoneda1,2,3, Kentaro Kogure2,3
1Department of Pharmaceutical Health Chemistry, Graduate School of Pharmaceutical Sciences, Tokushima University, 1-78-1 Shomachi, Tokushima 770-8505, Japan.
Biological & pharmaceutical bulletin
|July 13, 2025
概括
研究人员开发了针对大脑缺血/反 (I/R) 损伤的向纳米粒子. 这些纳米颗粒利用受损细胞上调节的低密度脂蛋白受体 (LDLR),改善跨血脑屏障的药物输送.
科学领域:
- 神经科学是一个神经科学.
- 生物材料科学 生物材料科学
- 血管生物学 血管生物学
背景情况:
- 大脑缺血/再输液 (I/R) 损伤存在重大挑战,原因是治疗选择有限,血脑屏障 (BBB) 阻碍药物输送.
- 虽然I/R后的BBB中断为药物输送提供了一个临时窗口,但BBB修复会随着时间的推移限制治疗效果.
研究的目的:
- 开发专门针对I/R环境的新型纳米粒子,克服传统药物输送方法的局限性.
- 调查向低密度脂蛋白受体 (LDLR) 的潜力,以提高I/R受损脑部区域的纳米粒子积累.
主要方法:
- 在人静脉内皮细胞 (HUVECs) 上使用氧气-葡萄糖剥夺/再氧化 (OGD/R) 的脑I/R损伤体外模型.
- 在OGD/R治疗的细胞中评估了LDLRmRNA和蛋白质表达的上调.
- 用模仿LDLR结合LDL的LDLR结合部位的化物修改了脂质体,以创建向的纳米粒子.
主要成果:
- OGD/R治疗导致LDLRmRNA的早期上调,并增加了HUVECs上的LDLR表达.
- 用基修饰的脂质体在OGD/R治疗的细胞中表现出特定的结合和增强的积累,由LDLR介导.
- 用抗体阻断LDLR显著降低了改性脂质体的吸收,证实了LDLR依赖的向.
结论:
- 低密度脂蛋白受体 (LDLR) 在I/R压力下在内皮细胞中被上调.
- 针对LDLR的化脂质体是向I/R受损的大脑组织输送药物的有希望的策略.
- 这些向的纳米粒子为改善脑I/R损伤患者的治疗结果提供了潜在的治疗方法.
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