针对MYC的工程外生体逆转了proneural-mesenchymal过渡,并延长了质母细胞瘤的存活时间
Amanda R Haltom1, Wafa E Hassen1, Janine Hensel1
1Department of Cancer Biology, University of Texas MD Anderson Cancer Center, Houston, TX.
Extracellular vesicle
|July 28, 2023
概括
提供Myc向siRNAs的工程外体有效地治疗小鼠多种质母细胞瘤 (GBM). 这种新疗法抑制了瘤生长,并通过重编程瘤微环境来改善存活率.
科学领域:
- 在瘤学瘤学.
- 纳米医学是一种纳米医学.
- 分子生物学分子生物学
背景情况:
- 失调的Myc信号传递是多种质母细胞瘤 (GBM) 中的一个关键瘤性途径.
- 在GBM中治疗目标Myc仍然是一个重大挑战.
- 外体提供了一个有前途的平台,用于向药物输送在癌症治疗.
研究的目的:
- 为了评估工程外体 (iExo-Myc) 装有针对Myc的siRNAs用于GBM治疗的疗效.
- 研究iExo-Myc对瘤生长,增殖和血管生成的治疗作用.
- 阐明iExo-Myc抗瘤活性背后的分子机制.
主要方法:
- 工程人类骨髓介质干细胞 (MSC) 衍生的外体,以封装Myc向的siRNAs (iExo-Myc).
- 将iExo-Myc给具有正位体GBM瘤的小鼠使用.
- 评估瘤生长,扩散和血管生成.
- 在瘤组织上进行转录分析和单核RNA测序 (snRNA-seq).
主要成果:
- iExo-Myc局部化到正位体的GBM瘤,并显著抑制了瘤增殖和血管生成.
- 用iExo-Myc治疗抑制了晚期GBM模型中的瘤生长和延长存活时间.
- 转录分析揭示了对介质细胞过渡和雌激素受体信号通路的影响.
- snRNA-seq表明iExo-Myc诱导的增长因子和互白素信号的抑制,促进一个介质酶到前神经过渡.
结论:
- Myc 是一种可行的治疗质母细胞瘤的目标.
- iExo-Myc代表了一种可行和可翻译的策略,用于针对脑瘤中的癌基因.
- 治疗有效载荷的外体介导传递为挑战性癌症标提供了一个有希望的方法.
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