揭示了多克索鲁比-细胞染色体P450电子转移途径,用于协同多模式瘤治疗
Wenbo Yin1,2, Zonghang Liu3, Shangjie An1,2
1State Key Lab of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin, 130022, China.
这项研究揭示了多克索鲁比 (DOX) 化疗的新机制,其中涉及细胞P450 (CYP450) 酶. 该方法通过产生活性氧物种并使多式瘤治疗成为可能,从而提高了DOX的疗效.
科学领域:
- 生物化学 生物化学
- 材料科学 材料科学 材料科学
- 在瘤学瘤学.
背景情况:
- 多克索鲁比 (DOX) 是一种关键的化疗药物,但其氧化还原机制尚未完全理解.
- 瘤微环境往往对药物和氧气的透存在障碍,限制了治疗的有效性.
研究的目的:
- 阐明DOX的基于氧化还原的机制,涉及P450 (CYP450) 酶.
- 开发一种协同的多式疗法系统,以克服瘤微环境障碍并增强癌症治疗.
主要方法:
- 研究了DOX与CYP450血红中心的结合以及随后的电子转移以产生超氧化 (O2•-).
- 使用中孔多多巴胺 (mPDA) 作为支架来放大电子流向DOX.
- 同时输送的L-氨酸 (L-Arg) 生成氧化 (NO),后者与O2反应形成过氧酸盐 (ONOO-).
- 评估了ONOO对矩阵金属蛋白酶 (MMP) 的激活及其在细胞外矩阵降解中的作用.
主要成果:
- 发现DOX与CYP450血红细胞结合,催化O2到O2 .
- mPDA增强了电子转移,而L-Arg促进了ONOO-生成,一种强大的活性氧物种 (ROS).
- ONOO激活了MMP,改善了药物和氧气的透,并使联合化疗,NO气疗和光热疗法成为可能.
结论:
- 一个新的DOX-CYP450电子转移机制被发现.
- 建立了一个协同治疗系统,整合化疗,NO气体疗法和光热疗法.
- 开发的系统有效地克服了瘤微环境障碍,提高了整体治疗疗效.
更多相关视频
09:09Synthesis of Aptamer-PEI-g-PEG Modified Gold Nanoparticles Loaded with Doxorubicin for Targeted Drug Delivery
Published on: June 23, 2020
15:04Potentiation of Anticancer Antibody Efficacy by Antineoplastic Drugs: Detection of Antibody-drug Synergism Using the Combination Index Equation
Published on: January 19, 2019
相关概念视频
Combination Therapies and Personalized Medicine
The combination of the drug acetazolamide and sulforaphane is a good example of combination therapy to treat cancer. The cells in the interior of a large tumor often die due to the hypoxic and...
Targeted Cancer Therapies
There are several types of targeted therapies against...
Combined Effects of Drugs: Synergism
Such synergistic combinations...
Electron Transport Chain: Complex I and II
ROS generation is regulated and maintained at moderate levels necessary...
Cancer Therapies
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...
Treatment Resistant Cancers
