フォトケージ・ウォーター・オキシジング・ヌクレオルス・ターゲティング Pt(IV) コンプレックス 独特の抗癌メカニズム
Zhiqin Deng1,2, Na Wang1,2, Yingying Liu1
1Department of Chemistry, City University of Hong Kong, Hong Kong, SAR, P. R. China.
Journal of the American Chemical Society
|March 29, 2020
まとめ
新しいプラチナ (IV) プロドラッグであるクマプラチンは,がん細胞の核をターゲットに精密な活性化を行います. 腫瘍の浸透性が向上し 独特の細胞死経路を通じて 薬剤耐性を克服し 癌治療の新たな戦略を提示しています
科学分野:
- 生物化学
- 薬理学について
- ナノ医療
背景:
- 標的型抗がん前薬は パーソナライズされた医療と薬剤耐性の克服に 極めて重要です
- プラチナベースの化学療法は有効ですが 耐性や標的外毒性という課題に直面しています
研究 の 目的:
- コントロールされた活性化と癌細胞核への標的投与のための光籠プラチナ (IV) 前薬であるクマプラチンを開発する.
- キュマプラチンの 独特の作用機構 腫瘍の浸透 薬剤耐性を克服する能力
主な方法:
- Pt (IV) の前薬であるクマプラチンの合成と特徴付け.
- 核の蓄積に焦点を当てたインビトロ光細胞毒性試験と細胞吸収試験
- 腫瘍の浸透,細胞衰老の誘導,p53独立細胞死,免疫細胞死の評価.
主要な成果:
- カウマプラチンは,水酸化による効率的な光活性化が,還元剤なしで示された.
- 前薬は核に効果的に蓄積し,活性化時にオクサリプラチンよりも著しく高い光細胞毒性を示した.
- カウマプラチンは腫瘍の浸透を強め,細胞衰老を誘発し,p53独立の細胞死,T細胞活性化による免疫細胞死を示した.
結論:
- コウマプラチンは,制御可能な,核を標的とするPt (IV) 抗がん前薬の設計のための新しい戦略を表しています.
- プラチナ製薬が核に蓄積されることで 作用機構が変化し 抵抗性が低下し 治療効果が向上します
関連する概念動画
Electron Transport Chain: Complex I and II
18.2K
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...
18.2K
Targeted Cancer Therapies
8.6K
The targeted cancer therapies, also known as “molecular targeted therapies,” take advantage of the molecular and genetic differences between the cancer cells and the normal cells. It needs a thorough understanding of the cancer cells to develop drugs that can target specific molecular aspects that drive the growth, progression, and spread of cancer cells without affecting the growth and survival of other normal cells in the body.
There are several types of targeted therapies against...
There are several types of targeted therapies against...
8.6K
Electron Transport Chain: Complex III and IV
8.9K
During the electron transport chain, electrons from NADH and FADH2 are first transferred to complexes I and II, respectively. These two complexes then transfer the electrons to ubiquinol, which carries them further to complex III. Complex III passes the electrons across the intermembrane space to Cyt c, which carries them further to complex IV. Complex IV donates electrons to oxygen and reduces it to water. As electrons pass through complexes I, III, and IV, the energy released aids the pumping...
8.9K
The Electron Transport Chain
19.3K
The electron transport chain or oxidative phosphorylation is an exothermic process in which free energy released during electron transfer reactions is coupled to ATP synthesis. This process is a significant source of energy in aerobic cells, and therefore inhibitors of the electron transport chain can be detrimental to the cell's metabolic processes.
Inhibitors of the electron transport chain
Rotenone, a widely used pesticide, prevents electron transfer from Fe-S cluster to ubiquinone or Q...
Inhibitors of the electron transport chain
Rotenone, a widely used pesticide, prevents electron transfer from Fe-S cluster to ubiquinone or Q...
19.3K
Treatment Resistant Cancers
3.6K
Cancer is the second leading cause of death in the United States. A cancer cell is genetically unstable and hence can mutate faster. They can also modify their microenvironment and escape immune surveillance. The difficulties in treating cancer are further compounded by the emergence of rapid resistance to anticancer drugs. The most common ways to attain resistance in cancer cells include alteration in drug transport and metabolism, modification of drug target, elevated DNA damage response, or...
3.6K
Drugs that Destabilize Microtubules
3.5K
Microtubules are dynamic structures and can be regulated by microtubule targeting agents (MTAs). Microtubule destabilizing drugs are a class of MTAs that destabilize and prevent microtubules' polymerization. Both natural and synthetic chemicals can be found under this class of drugs. Vincristine and vinblastine, two vinca alkaloids, and colchicine were among the first to be discovered. These drugs can affect cells in various ways, either by inducing a change in cell morphology, preventing...
3.5K


