针对大脑的金属有机框架纳米平台重编程 Ferroptosis 质母细胞瘤的敏感性
Mengzhen Wang1, Yi Lai2, Hanxue Meng1
1School of Chemistry and Molecular Engineering,East China Normal University, Shanghai 200241, China.
ACS nano
|January 13, 2026
概括
这项研究引入了一种新的金属有机框架 (MOF) 纳米平台,以增强质母细胞瘤 (GBM) 的铁灭疗法. MOF有效地准GBM,抑制抗氧化防御,并促进铁亡,显著抑制瘤生长.
科学领域:
- 生物医学工程 生物医学工程
- 纳米技术 纳米技术
- 在瘤学瘤学.
背景情况:
- 铁化是一种有前途的质母细胞瘤 (GBM) 治疗方法,但其疗效受到GBM细胞中低-共酶A合成酶长链家族成员4 (ACSL4) 表达和强大的抗氧化防御 (谷氨[GSH]和谷氨过氧化酶4[GPX4]) 的限制.
- 开发克服这些局限性的策略对于有效的GBM治疗至关重要.
研究的目的:
- 设计和评估一种基于金属有机框架 (MOF) 的新型纳米平台,用于增强质母细胞瘤 (GBM) 的铁灭诱导.
- 研究X射线照射,铁 (Fe3+) 释放和Nrf2抑制对铁和GBM瘤抑制的协同效应.
主要方法:
- 合成了一种Hf4+/Fe3+-tetrakis4-carboxyphenyl) 氨酸MOF,加载了布鲁萨托尔 (Nrf2抑制剂),并用转氨基酸进行表面修饰,用于BBB透和GBM准.
- 纳米平台的有效性被评估 *in vivo* 使用X射线照射下的正位体GBM模型,监测瘤生长,铁灭标志物和抗氧化途径.
主要成果:
- MOF纳米平台成功增强了X射线沉积,升级了ACSL4表达,并促进了脂合成.
- 释放Fe3+触发了芬顿反应,而布鲁萨托尔抑制了Nrf2-GSH-GPX4抗氧化轴,导致放大了脂质过氧化.
- 该纳米平台协同诱导了铁,显著抑制了正型GBM瘤的生长,并可能增强抗瘤免疫反应.
结论:
- 开发的基于MOF的纳米平台,通过协同增强铁化,代表了针对GBM的强有力的治疗策略.
- 这种方法有效地克服了GBM的内在抵抗机制,并显示出显著的*in vivo*抗瘤活性.
- 该纳米平台通过将铁灭诱导与免疫反应调节相结合,有望推动GBM治疗.
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