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通过选脂开关对ATP有反应的脂质体,这些脂质体在化代谢物结合时会发生形态变化
Jinchao Lou1, Jennifer A Schuster2, Francisco N Barrera2
1Department of Chemistry, University of Tennessee, Knoxville, Tennessee 37996, United States.
Journal of the American Chemical Society
|February 16, 2022
概括
研究人员开发出一种新型的脂质体,这种脂质体会在患病细胞中大量存在的腺三酸盐 (ATP) 的作用下释放药物. 这项突破为癌症等疾病提供了有针对性的药物治疗.
科学领域:
- 生物技术
- 药物输送系统
- 纳米医学
背景情况:
- 脂质细胞增强药物运输,但需要在疾病部位控制释放.
- 现有的触发释放策略具有有限的刺激范围.
- 在临床应用中,响应刺激的药物输送至关重要.
研究的目的:
- 开发新型的刺激反应性脂质体,用于触发内容释放.
- 调查由三氨酸 (ATP) 驱动的选择性货物释放.
- 探索疾病细胞中可控释放的新模式.
主要方法:
- 合成的脂质开关 (1a-b) 与用于ATP结合的ZnDPA单位.
- 使用染料泄漏测试 (尼罗河红色,) 来验证货物的释放.
- 使用光显微镜和ATP操纵进行细胞传递研究.
主要成果:
- 脂质体表现出由ATP引发的选择性载荷释放,而不是类似的化代谢物.
- ATP结合导致脂质交换机的形状变化,破坏了脂质体的包装.
- 细胞输送与细胞内ATP水平相关,显示特异性.
结论:
- 开发了一种新型ATP触发的脂质体系统,
- 在高ATP的存在下,可证明选择性释放和增强细胞递送.
- 这种方法提供了一个有前途的新策略,
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