棒形Au@Ce纳米平台用于增强光动态瘤协作疗法
Yuxiang Sun1,2, Ziqi Cao3, Xiaoli Zhang1
1Jiangsu Key Laboratory of Integrated Traditional Chinese and Western Medicine for Prevention and Treatment of Senile Diseases, Institute of Translational Medicine, Medical College, Yangzhou University, Yangzhou, 225001, P. R. China.
Small methods
|August 4, 2024
概括
黄金-烯酸纳米棒 (Au@Ce NRs) 通过在近红外光照射时释放氧气和自由基来增强光动力疗法. 这个过程充电,最大限度地增加瘤细胞的亡,抑制黑色素瘤的生长.
科学领域:
- 生物医学工程 生物医学工程
- 材料科学 材料科学 材料科学
- 纳米技术 纳米技术
背景情况:
- 光动力疗法 (PDT) 的疗效受到瘤缺氧和氧气耗尽的限制.
- 缺氧导致自由基的产生不足,阻碍PDT治疗的有效性.
- 制定克服缺氧的策略对于改善PDT结果至关重要.
研究的目的:
- 开发一种用于增强瘤光动力学治疗的新型纳米平台.
- 在近红外 (NIR) 光下研究Au@CeO2纳米棒 (Au@Ce NRs) 的氧气和自由基释放能力.
- 在黑色素瘤模型中评估Au@Ce NRs的治疗疗效.
主要方法:
- 通过组装金纳米棒和纳米粒子,合成Au@CeO2纳米棒 (Au@Ce NRs).
- 对Au@Ce NRs进行NIR光照射,以诱导氧气和自由基的释放.
- 在体外评估B16-F10细胞亡和自由基水平.
- 在移植瘤模型中对瘤生长抑制和原纤维生成的体内评估.
主要成果:
- Au@Ce NRs有效吸收NIR光,促进氧气和自由基的释放.
- 观察到一个独特的"充电/放电"循环,Au@Ce NRs在H2O2的再氧化后重新释放氧气和基因.
- NIR/Au@Ce NRs治疗显著增加了B16-F10细胞亡和抑制瘤生长.
- 在治疗瘤模型中观察到增强表皮原蛋白纤维的生成.
结论:
- Au@Ce NRs通过最大化内氧气利用来增强PDT的有效平台.
- 可充电的氧气和自由基释放机制改善了黑色素瘤的治疗结果.
- Au@Ce NRs显示出改善缺氧瘤治疗的显著潜力.
更多相关视频
相关概念视频
02:49Cancer Therapies
Cancer therapies are various modes of treatment, such as surgery, radiation therapy, and chemotherapy that are administered to cancer patients.
However, cancer treatments can pose several challenges, as therapies used to kill cancer cells are generally also toxic to normal cells. Moreover, cancer cells mutate rapidly and can develop resistance to chemical agents or radiation therapy. Besides, all types of cancer cells may not respond to the same therapy. Some cancer cells respond to one...
However, cancer treatments can pose several challenges, as therapies used to kill cancer cells are generally also toxic to normal cells. Moreover, cancer cells mutate rapidly and can develop resistance to chemical agents or radiation therapy. Besides, all types of cancer cells may not respond to the same therapy. Some cancer cells respond to one...
02:49Cancer Therapies
Cancer therapies are various modes of treatment, such as surgery, radiation therapy, and chemotherapy that are administered to cancer patients.
However, cancer treatments can pose several challenges, as therapies used to kill cancer cells are generally also toxic to normal cells. Moreover, cancer cells mutate rapidly and can develop resistance to chemical agents or radiation therapy. Besides, all types of cancer cells may not respond to the same therapy. Some cancer cells respond to one...
However, cancer treatments can pose several challenges, as therapies used to kill cancer cells are generally also toxic to normal cells. Moreover, cancer cells mutate rapidly and can develop resistance to chemical agents or radiation therapy. Besides, all types of cancer cells may not respond to the same therapy. Some cancer cells respond to one...