将基于siRNA的球形核酸转化为可生物相容的结构
Matthew K Vasher1,2, Michael Evangelopoulos1,2, Chad A Mirkin1,2,3
1Department of Biomedical Engineering, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States.
ACS applied bio materials
|August 11, 2023
概括
新的小干扰RNA球形核酸 (siRNA-SNAs) 使用脂质体核来增强细胞吸收和降低毒性. 这些生物相容的siRNA-SNAs通过沉默血管内皮生长因子,有效地抑制血管生成.
科学领域:
- 纳米技术纳米技术
- 分子生物学分子生物学
- 生物化学 生物化学
背景情况:
- 球形核酸 (SNA) 为基因调节提供了独特的特性.
- 传统的SNA通常使用金纳米粒子核心,这可能会在生物相容性和细胞毒性方面带来挑战.
- 开发生物相容的替代品对于推进医学中SNA应用至关重要.
研究的目的:
- 设计和合成新型的小干扰RNA球形核酸 (siRNA-SNAs),利用生物相容的脂质体纳米粒子核心.
- 评估这些基于脂质体的siRNA-SNAs的细胞吸收效率,细胞毒性和基因沉默能力.
- 为了证明这些结构在抑制血管生成方面的潜力.
主要方法:
- 合成与脂质体纳米粒子核心的针状siRNA-SNAs.
- 使用凝电泳,动态光散射和OliGreen量化进行了表征.
- 细胞吸收,细胞毒性和血管内皮生长因子 (VEGF) 沉默在人类静脉内皮细胞中的体外评估.
主要成果:
- 与线性siRNA相比,基于脂质组的siRNA-SNA在4小时内显示细胞吸收效率增加了20倍.
- 与基于金纳米粒子的siRNA-SNAs相比,这些构造显示出细胞毒性减少了4倍.
- 在体外通过沉默VEGF实现了有效的血管生成抑制.
结论:
- 基于生物相容的脂质体核的针状siRNA-SNAs代表了增强基因调节的有希望的平台.
- 这些纳米结构提供了改进的细胞传递和降低毒性,超过传统的基于黄金的siRNA-SNAs.
- 能够有效地使VEGF沉默的能力凸显了它们在涉及血管生成的疾病中的治疗潜力.
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