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基于聚氨的新型离子纳米颗粒通过静电稳定用氨酸进行有效的基因治疗

Athar Mahdieh¹, Hamidreza Motasadizadeh², Samane Maghsoudian³

¹Department of Pharmacy, Section for Pharmaceutics and Social Pharmacy, University of Oslo, Oslo, Norway.

Colloids and surfaces. B, Biointerfaces

|February 21, 2024

概括

这项研究引入了针对性纳米颗粒,用于在乳腺癌中提供反信号传感器和转录3 (STAT3) siRNA激活器. 覆盖着氨酸的纳米载体在癌细胞和瘤中显示出增强的输送和STAT3基因抑制.

科学领域:

生物医学工程生物医学工程
纳米技术纳米技术
癌症治疗癌症治疗

背景情况:

有效的基因传递系统对于癌症基因治疗至关重要,特别是针对特定的瘤组织使用像siRNA这样的药物.
开发有针对性的输送工具可以提高治疗疗效,减少癌症治疗中的非目标效应.

研究的目的:

开发和评估氨酸涂层的新型阴性聚氨离子烯 (HA/CPUI) 纳米颗粒,以向向乳腺癌细胞输送抗STAT3 siRNA.
评估目标纳米载体的细胞吸收,基因沉默效率和体内瘤积累.

主要方法:

用抗STAT3 siRNA复合的CPUI纳米粒子的制造.
用氨酸 (HA) 修改纳米颗粒的表面,用于主动准.
使用MCF-7乳腺癌细胞进行体外评估,包括细胞毒性,细胞内化 (流细胞计,共聚焦显微镜) 和STAT3基因抑制.
使用4T1乳腺瘤携带的小鼠进行体内研究,通过全身光成像来评估瘤积累.

主要成果:

与空白纳米载体相比,HA/CPUI/siRNA纳米载体的细胞毒性降低.
向的纳米载体通过CD44介导的内细胞化,在MCF-7细胞中显示出显著更高的细胞内化.
与HA/CPUI/siRNA相比,与非向CPUI/siRNA相比,观察到增强了STAT3基因表达的抑制.
在4T1瘤携带小鼠中观察到瘤中向纳米载体的更多积累.

结论:

HA/CPUI/siRNA纳米载体代表了乳腺癌治疗中siRNA的一个有希望的向输送系统.
CD44介导的向策略增强了细胞吸收和治疗疗效.
这些发现支持HA/CPUI/siRNA纳米载体的潜力,通过基因疗法有效治疗乳腺癌.

关键词:

乳腺癌治疗疗法乳腺癌治疗氨酸是什么? 氨酸是什么?离子纳米粒子是离子纳米粒子.聚氨是一种聚氨.这就是STAT3 siRNA.有针对性的基因传递.

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