瘤向的多功能细胞外囊泡作为肺癌治疗的药物载体
Narsireddy Amreddy1,2,3, Akhil Srivastava1,2,4, Natascha Riedinger5
1Department of Pathology, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA.
研究人员使用载有西斯化疗的细胞外囊泡 (EV) 开发了向纳米粒子. 这些瘤向的多功能EV (tt-Mfn-EV) 显示出改善肺癌治疗的前景,同时降低了对健康细胞的毒性.
科学领域:
- 纳米技术纳米技术
- 生物技术是生物技术.
- 在瘤学瘤学.
背景情况:
- 化疗是一种主要的肺癌治疗方法,但会导致显著的毒性和非目标效应.
- 改进的药物输送系统对于最大限度地减少副作用和提高治疗疗效至关重要.
- 细胞外囊泡 (EVs) 为癌症治疗中向药物输送提供了一个有前途的平台.
研究的目的:
- 开发瘤向的多功能EV (tt-Mfn-EV) 用于增强肺癌化疗.
- 调查tt-Mfn-EVs作为药物载体的有效性和安全性.
- 评估tt-Mfn-EVs对肺癌细胞的选择性细胞毒性.
主要方法:
- 通过通过pH敏感链接加载EVs与cisplatin结合的黄金纳米颗粒来制订t-Mfn-EVs.
- 装饰着带有转移素连接体的EV来准转移素受体 (TfR) 过度表达的肺癌细胞.
- 在各种癌症和正常细胞系中评估药物释放,细胞活力,细胞亡和DNA损伤.
主要成果:
- tt-Mfn-EVs表明药物释放依赖于pH值,在酸性pH值 (5.5) 释放更高.
- 与TfR低的细胞 (HCC827) 相比,tt-Mfn-EVs显著降低了TfR高的肺癌细胞 (A549) 的活力,增加了细胞灭亡和DNA损伤.
- 在正常的肺纤维细胞 (MRC-9) 和HEK293细胞中观察到最小的细胞毒性,而不是自由的西斯.
结论:
- tt-Mfn-EVs在体外表现出选择性和增强的瘤向细胞杀死.
- 这种基于电动汽车的药物输送系统为开发新型癌症疗法提供了一个可行的策略.
- 向治疗方法将对正常组织的毒性降至最低,比传统化疗更有可能改善.
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