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磁力机械驱动诱导内皮膜的透性
Mohammad Kanber1, Obum Umerah2, Stephen Brindley3
1Department of Physics, Howell Science Complex, East Carolina University, Greenville, North Carolina 27858, United States.
ACS biomaterials science & engineering
|November 28, 2023
概括
磁力机械驱动 (MMA) 使用铁纳米粒子和磁场暂时增加血管的通透性,增强向癌症药物递送,而不会伤害细胞.
科学领域:
- 生物医学工程 生物医学工程
- 纳米技术纳米技术
- 癌症治疗方法 癌症治疗方法
背景情况:
- 癌症仍然是一个重大的全球健康挑战,在2023年,美国预计将有超过190万例新病例和60万例死亡.
- 有效的癌症治疗依赖于治疗向,但异常的瘤血管阻碍了药物输送.
- 改善药物输送的现有方法可以促进瘤迁移和转移.
研究的目的:
- 开发一种创新的方法,磁力机械驱动 (MMA),以提高内皮透气性,以改善药物输送.
- 调查FDA批准的PEGylated超偏磁铁氧化物纳米粒子 (PEG-SPIONs) 和交替磁场用于诱导透性的使用.
- 在2D细胞培养模型中建立MMA的概念验证.
主要方法:
- 在2D细胞培养模型中利用人类静脉内皮细胞 (HUVECs).
- 用PEG-SPIONs化HUVEC,并将它们暴露在受控的交替磁场中.
- 优化了粒子度,化时间和磁场参数 (100mT,65Hz,30分钟脉冲模式).
主要成果:
- 由于MMA诱导了actin丝的重塑,并破坏了内皮-cadherin结合点,造成了短暂的空隙.
- 通过诱导的空隙观察到光素异硫酸-德克斯转位.
- 在100微克/毫升PEG-SPIONs的化时间长达3小时内,没有检测到细胞活力的降低.
- 在磁场处理后2小时,达到33%的内皮通透度峰值.
结论:
- 通过磁力机械应力机制,MMA有效地和暂时地增加了内皮透气性.
- 这种方法对瘤和其他解剖区域的向药物输送有希望.
- 该方法为克服各种疾病干预措施中的药物输送障碍提供了一种新的策略.
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