H2O2自給化学療法用のペロキシドナノドットの合成
Li-Sen Lin1, Tao Huang2, Jibin Song3
1Laboratory of Molecular Imaging and Nanomedicine (LOMIN), National Institute of Biomedical Imaging and Bioengineering (NIBIB) , National Institutes of Health (NIH) , Bethesda , Maryland 20892 , United States.
Journal of the American Chemical Society
|June 15, 2019
まとめ
研究者らは,化学動力療法 (CDT) の新しいナノ材料であるペロキシド銅 (CP) のナノドットを開発しました. これらのナノドットは自己供給の過酸化水素 (H2O2) を供給し,ヒドロキシル基の生成を通じて癌細胞の殺戮を促進します.
科学分野:
- バイオマテリアル科学
- ナノテクノロジー
- ガン 治療
背景:
- 化学動力療法 (CDT) は,がん治療のために過酸化水素 (H2O2) からヒドロキシルラジカル (• OH) を生成するためにフェントン触媒を使用します.
- 内生的なH2O2が不足すると,CDTの有効性が低下し,H2O2を自給できる薬が必要になる.
研究 の 目的:
- 強化されたCDTのための新しいフェントンタイプの金属過酸化ナノ材料を開発する.
- H2O2を自給できるナノマテリアルを設計し 抗がん効果を高める
主な方法:
- H2O2をCu2+に調整することによって,銅過酸化物 (CP) のナノドットを製造する.
- CPナノドット解離およびその後のフェントン型反応のために酸性腫瘍の微環境を利用する.
- •OH誘発の溶解体膜浸透と細胞死経路の調査
主要な成果:
- CPナノドットはpH依存のH2O2とOH生成を示した.
- CPナノドットの内細胞化とリソソーム解離により,標的の • OH 産生が生じます.
- CPナノドットは,腫瘍の蓄積による副作用を最小限に抑え,腫瘍の成長を効果的に抑制しました.
結論:
- CPナノドットは最初のフェントン型金属過酸化ナノ材料を表しています.
- この研究は,自己供給のH2O2を通じてCDTの有効性を高めるための新しい戦略を提示しています.
- CPナノドットは安全性プロファイルが向上した標的型がん治療の有望なアプローチです
さらに関連する動画
関連する概念動画
Synthesis and Decomposition Reactions
38.1K
Synthesis and decomposition are two types of redox reactions. Synthesis means to make something, whereas decomposition means to break something. The reactions are accompanied by chemical and energy changes.
38.1K
Autoxidation of Ethers to Peroxides and Hydroperoxides
9.5K
Ethers represent a class of chemical compounds that become more dangerous with prolonged storage because they tend to form explosive peroxides when standing in the air. Autoxidation is the spontaneous oxidation of a compound in air. In the presence of oxygen, ethers slowly oxidize to form hydroperoxides and dialkyl peroxides.
9.5K
Regioselectivity of Electrophilic Additions-Peroxide Effect
10.4K
In the presence of organic peroxides, the addition of hydrogen bromide to an alkene yields the isomer that is not predicted by Markovnikov’s rule. For example, the addition of hydrogen bromide to 2-methylpropene in the presence of peroxides gives 1-bromo-2-methylpropane. This addition reaction proceeds via a free radical mechanism, which reverses the regioselectivity. The free radical reaction mechanism involves three stages: initiation, propagation, and termination.
10.4K
Nerve Supply of the GI Tract
3.4K
The neuronal supply to the gastrointestinal (GI) tract is essential for regulating various functions, including digestion, absorption, and movement of food. This intricate network of nerves is known as the enteric nervous system (ENS), often referred to as the "second brain" of the body.
The enteric nervous system consists of two major plexuses: the myenteric plexus (Auerbach's plexus) and the submucosal plexus (Meissner's plexus). These plexuses are located within the layers of...
The enteric nervous system consists of two major plexuses: the myenteric plexus (Auerbach's plexus) and the submucosal plexus (Meissner's plexus). These plexuses are located within the layers of...
3.4K
Blood Supply to the Digestive System
5.1K
Splanchnic circulation refers to the network of blood vessels that supply and drain blood from the abdominal organs involved in digestion, including the stomach, liver, pancreas, intestines, and spleen. This circulation delivers essential nutrients and oxygen while removing waste products from these organs.
Blood Supply to the Digestive System: The splanchnic circulation involves three main arteries: the celiac artery (also known as the celiac trunk) and the superior and inferior mesenteric...
Blood Supply to the Digestive System: The splanchnic circulation involves three main arteries: the celiac artery (also known as the celiac trunk) and the superior and inferior mesenteric...
5.1K
Dehydration Synthesis
149.0K
Overview
Dehydration synthesis (also called a condensation reaction) is the chemical process in which two molecules covalently link together to form a new molecule, along with the release of a water molecule. Many physiologically important compounds form by dehydration synthesis reactions, such as complex carbohydrates, proteins, DNA, and RNA.
Synthesis of carbohydrates
Sugar molecules are covalently linked together by dehydration synthesis. During the reaction, the hydroxyl (-OH) group from...
Dehydration synthesis (also called a condensation reaction) is the chemical process in which two molecules covalently link together to form a new molecule, along with the release of a water molecule. Many physiologically important compounds form by dehydration synthesis reactions, such as complex carbohydrates, proteins, DNA, and RNA.
Synthesis of carbohydrates
Sugar molecules are covalently linked together by dehydration synthesis. During the reaction, the hydroxyl (-OH) group from...
149.0K


