A Hepatocyte-Mimicking Antidote for Alcohol Intoxication.

A Hepatocyte-Mimicking Antidote for Alcohol Intoxication.
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DOI:
10.1002/adma.201707443
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发表时间:
2018-05
期刊:
Advanced materials (Deerfield Beach, Fla.)
影响因子:
--
通讯作者:
Ji C
Ji C
中科院分区:
其他
文献类型:
--
作者:
Xu D;Han H;He Y;Lee H;Wu D;Liu F;Liu X;Liu Y;Lu Y;Ji C

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酒精中毒会导致严重的疾病,而目前的治疗大多是支持性的,无法有效地清除酒精。在酒精消耗后,酒精分别被内源性醇脱氢酶和醛脱氢酶依次氧化成乙醛和乙酸盐。受酒精代谢的启发,我们通过将醇氧化酶(AOx)、过氧化氢酶(CAT)和醛脱氢酶(ALDH)的纳米帽共同递送至肝脏来开发用于酒精中毒的肝细胞模拟解毒剂,其中AOx和CAT催化酒精氧化成乙醛,而ALDH催化乙醛氧化成乙酸。对酒精中毒的小鼠给药后,解毒剂迅速在肝脏中积累,并使血液中的酒精浓度显著降低。此外,血液乙醛浓度保持在极低水平,显著有助于肝脏保护。这种解毒剂可以同时消除酒精和乙醛,对酒精中毒和中毒的治疗有很大的希望,并且可以提供治疗益处。
Alcohol intoxication causes serious diseases, whereas current treatments are mostly supportive and unable to remove alcohol efficiently. Upon alcohol consumption, alcohol is sequentially oxidized to acetaldehyde and acetate by the endogenous alcohol dehydrogenase and aldehyde dehydrogenase, respectively. Inspired by the metabolism of alcohol, we develop a hepatocyte–mimicking antidote for alcohol intoxication through the co–delivery of the nanocapsules of alcohol oxidase (AOx), catalase (CAT), and aldehyde dehydrogenase (ALDH) to the liver, where AOx and CAT catalyze the oxidation of alcohol to acetaldehyde, while ALDH catalyzes the oxidation of acetaldehyde to acetate. Administered to alcohol–intoxicated mice, the antidote rapidly accumulates in the liver and enables a significant reduction of the blood alcohol concentration. Moreover, blood acetaldehyde concentration is maintained at an extremely low level, significantly contributing to liver protection. Such an antidote, which can eliminate alcohol and acetaldehyde simultaneously, holds great promise for the treatment of alcohol intoxication and poisoning and can provide therapeutic benefits.
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