缺氧触发的单点氧和末释放,以实现协同治疗作用的协同作用
1State Key Laboratory of Fine Chemicals, Department of Pharmaceutical Engineering, Dalian University of Technology, 2 Linggong Road, 116024 Dalian, P. R. China. leiwang@dlut.edu.cn.
概括
一种新型前药在缺氧瘤中释放单片氧和末,有效抑制癌细胞的生长和迁移. 这种双重作用的方法为癌症治疗提供了一个有希望的新策略.
科学领域:
- 生物化学 生物化学
- 药理学 药理学是指药理学的学科.
- 在瘤学瘤学.
背景情况:
- 瘤缺氧在癌症治疗中是一个重大挑战,限制了光动力学疗法 (PDT) 等疗法的疗效.
- 传统的化疗剂往往缺乏特异性,并可能导致全身毒性.
- 开发利用瘤微环境特征的向药物递送系统至关重要.
研究的目的:
- 设计和合成一个低氧激活前药物 (Pyd-endo),结合内氧氧化物和末的功能.
- 评估前药物在低氧条件下释放细胞毒剂 (单片氧和末) 的能力.
- 评估新型前药的体外和体内抗癌疗效.
主要方法:
- 末末氧化-末合物 (Pyd-endo) 的合成.
- 在体外细胞培养实验中评估缺氧反应,细胞毒性以及对癌细胞迁移和增殖的影响.
- 在体内研究中,使用带有瘤的小鼠进行前药的脂质体配方.
主要成果:
- 皮德-恩多表现出显著的低氧反应,释放单片氧和芳末.
- 这种前药有效地抑制了各种癌细胞类型的迁移和增殖in vitro.
- 在体内研究证实了瘤携带小鼠的脂质体Pyd-endo配方的抗癌效用.
结论:
- 这种Pyd-endo前药物通过释放双重细胞毒剂,成功地解决了瘤缺氧和PDT限制.
- 这种联合治疗策略显示出增强抗癌疗效的巨大潜力.
- 这项研究强调了将单氧氧和化疗剂结合起来,改善癌症治疗的力量.
更多相关视频
09:01Magnetic-, Acoustic-, and Optical-Triple-Responsive Microbubbles for Magnetic Hyperthermia and Pothotothermal Combination Cancer Therapy
Published on: May 22, 2020
3.0K
05:46A Novel Inhalation Mask System to Deliver High Concentrations of Nitric Oxide Gas in Spontaneously Breathing Subjects
Published on: May 4, 2021
4.6K
相关概念视频
Cancer Therapies
7.4K
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...
7.4K
Combined Effects of Drugs: Synergism
3.6K
Synergism is a useful mechanism where combining two or more drugs is more effective than each constituent used alone. Such combinations are also called supra-additive interactions. The drugs collectively enhance the final therapeutic effect by acting on different targets. Another advantage is that the low dose of each constituent drug is sufficient to achieve the desired effect. This helps reduce the duration of therapy and lower the adverse effects of these drugs.
Such synergistic combinations...
Such synergistic combinations...
3.6K
Electron Transport Chain: Complex I and II
9.6K
The mitochondrial electron transport chain (ETC) is the main energy generation system in the eukaryotic cells. However, mitochondria also produce cytotoxic reactive oxygen species (ROS) due to the large electron flow during oxidative phosphorylation. While Complex I is one of the primary sources of superoxide radicals, ROS production by Complex II is uncommon and may only be observed in cancer cells with mutated complexes.
ROS generation is regulated and maintained at moderate levels necessary...
ROS generation is regulated and maintained at moderate levels necessary...
9.6K
