氧气调节的酶纳米平台用于同步干预糖解和氧化酸化,以增强抗瘤治疗
Shanshan Jiang1, Wanyu Li2, Yifan Zhang2
1Marshall Laboratory of Biomedical Engineering, International Cancer Center, Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, Laboratory of Evolutionary Theranostics (LET), School of Biomedical Engineering, Shenzhen University Medical School, Shenzhen University, Shenzhen 518055, China; Nanophotonics Research Center, Shenzhen Key Laboratory of Micro-Scale Optical Information Technology, Institute of Microscale Optoelectronics, Shenzhen University, Shenzhen 518060, China.
这项研究引入了一种新型纳米平台 (OAGO),通过调节氧气水平,同时针对瘤细胞糖解和氧化酸化 (OXPHOS),为癌症治疗提供了一个有前途的新策略.
科学领域:
- 生物化学 生物化学
- 纳米技术 纳米技术
- 癌症生物学 癌症生物学
背景情况:
- 瘤细胞表现出代谢重编程,依靠糖解和氧化酸化 (OXPHOS) 获得能量.
- 同时准糖解和OXPHOS是一个治疗挑战.
- 代谢干预策略对于有效的癌症治疗至关重要.
研究的目的:
- 开发一个纳米平台,同时干预瘤细胞糖解和OXPHOS.
- 为增强癌症治疗设计一种氧气调节策略.
- 研究一种联合代谢和氧气调节方法的治疗疗效.
主要方法:
- 使用葡萄糖氧化酶 (GOx) 和寡糖氨酸A (OA) 制造氧气调制纳米平台 (OAGO),涂上细菌外膜囊泡 (OMVs).
- 实施一个"开源和限制"的氧气策略来调节内氧气水平.
- 在4T1小鼠模型中评估OAGO的疗效,结合光热疗法.
主要成果:
- OAGO同时抑制糖解 (通过GOx) 和OXPHOS (通过OA),导致氧化应激和线粒体功能障碍.
- "开源和限制"的氧气策略增加了GOx催化剂的氧气可用性,增强了能量耗尽.
- OMVs改善了OAGO的积累,促进了光热疗法,并进一步提高了内氧气水平,从而产生了显著的抗瘤效应.
结论:
- 同步干预糖解和OXPHOS,加上氧气调节,是癌症治疗的有效策略.
- OAGO纳米平台展示了有效的抗瘤治疗的巨大潜力.
- 这种方法通过利用瘤代谢脆弱性和氧气动态来提供一种新的治疗途径.
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