可电离性脂质纳米颗粒用于RAS蛋白酶输送,以抑制癌细胞增殖
Ella Atsavapranee1, Rebecca M Haley1, Margaret M Billingsley1
1Department of Bioengineering, University of Pennsylvania, Philadelphia, PA 19104, USA.
概括
电离性脂质纳米颗粒 (LNPs) 提供工程RAS蛋白酶以抑制癌细胞增殖. 这种LNP平台显示出开发针对RAS突变的新型癌症疗法的前景.
科学领域:
- 生物技术是生物技术.
- 在瘤学瘤学.
- 纳米医学是一种纳米医学.
背景情况:
- 拉斯蛋白突变驱动大约三分之一的人类癌症.
- 针对瘤性RAS蛋白的有效临床疗法仍然有限.
- 基于细胞内蛋白质的疗法需要有效的输送系统.
研究的目的:
- 开发和评估可电离性脂质纳米颗粒 (LNP) 作为RAS蛋白酶的输送平台.
- 评估LNP传递的RAS蛋白酶在抑制癌细胞增殖中的疗效,在体外和体内.
- 优化LNP配方,以提高输送,生物分布和降低毒性.
主要方法:
- 设计和合成了一个包含RAS蛋白酶的13个阴阳性脂质含有LNP的库.
- 对体外递送效率和细胞毒性进行评估的LNP配方.
- 在KRAS突变结直肠癌细胞中评估了高性能LNP配方的抗增殖作用.
- 使用异种移植模型进行了体内研究,以评估LNP生物分布,瘤生长抑制和毒性.
主要成果:
- 确定了四种高性能LNP配方,具有高效的体外输送和RAS蛋白酶功能.
- 证明了化脂度和货物类型都在体内影响了LNP和货物分布.
- 在体内表现出癌细胞增殖和瘤生长的显著减少,使用的LNP配方.
- 在体内确认了RAS蛋白酶的有效细胞内传递.
结论:
- 电离性脂质纳米颗粒作为细胞内RAS蛋白酶的可行和有效的输送平台.
- 这种基于LNP的方法有可能开发针对RAS驱动瘤的新型癌症治疗方法.
- 该平台的进一步开发可能会导致各种癌症的新治疗策略,包括结肠直肠癌,胰腺癌和肺癌.
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