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建立和评价用于治疗脑型疟疾的葡萄糖修饰的纳米复合脂质体。

Establishment and evaluation of glucose-modified nanocomposite liposomes for the treatment of cerebral malaria.

机构信息

Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, 100700, People's Republic of China.

The Hospital of Nanbu County, Sichuan, People's Republic of China.

出版信息

J Nanobiotechnology. 2022 Jul 6;20(1):318. doi: 10.1186/s12951-022-01493-8.


DOI:10.1186/s12951-022-01493-8
PMID:35794597
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9258070/
Abstract

Cerebral malaria (CM) is a life-threatening neurological complication caused by Plasmodium falciparum. About 627,000 patients died of malaria in 2020. Currently, artemisinin and its derivatives are the front-line drugs used for the treatment of cerebral malaria. However, they cannot target the brain, which decreases their effectiveness. Therefore, increasing their ability to target the brain by the nano-delivery system with brain-targeted materials is of great significance for enhancing the effects of antimalarials and reducing CM mortality. This study used glucose transporter 1 (GLUT1) on the blood-brain barrier as a target for a synthesized cholesterol-undecanoic acid-glucose conjugate. The molecular dynamics simulation found that the structural fragment of glucose in the conjugate faced the outside the phospholipid bilayers, which was conducive to the recognition of brain-targeted liposomes by GLUT1. The fluorescence intensity of the brain-targeted liposomes (na-ATS/TMP@lipoBX) in the mouse brain was significantly higher than that of the non-targeted liposomes (na-ATS/TMP@lipo) in vivo (P < 0.001) after intranasal administration. The infection and recurrence rate of the mice receiving na-ATS/TMP@lipoBX treatment were significantly decreased, which had more advantages than those of other administration groups. The analysis of pharmacokinetic data showed that na-ATS/TMP@lipoBX could enter the brain in both systemic circulation and nasal-brain pathway to treat malaria. Taken together, these results in this study provide a new approach to the treatment of cerebral malaria.

摘要

脑型疟疾(CM)是由恶性疟原虫引起的危及生命的神经系统并发症。2020 年,约有 62.7 万人死于疟疾。目前,青蒿素及其衍生物是治疗脑型疟疾的一线药物。然而,它们不能靶向大脑,这降低了它们的疗效。因此,通过具有脑靶向材料的纳米递药系统增加它们靶向大脑的能力,对于增强抗疟药的效果和降低 CM 死亡率具有重要意义。本研究以血脑屏障上的葡萄糖转运蛋白 1(GLUT1)为靶标,合成了胆固醇-十一烷酸-葡萄糖缀合物。分子动力学模拟发现,缀合物中葡萄糖的结构片段面向磷脂双层的外侧,有利于 GLUT1 识别脑靶向脂质体。脑靶向脂质体(na-ATS/TMP@lipoBX)在小鼠脑内的荧光强度明显高于非靶向脂质体(na-ATS/TMP@lipo)(P < 0.001),经鼻腔给药后。接受 na-ATS/TMP@lipoBX 治疗的小鼠感染和复发率明显降低,比其他给药组具有更多优势。药代动力学数据分析表明,na-ATS/TMP@lipoBX 可以通过全身循环和鼻脑途径进入大脑,用于治疗疟疾。综上所述,本研究结果为治疗脑型疟疾提供了一种新方法。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d373/9258070/a6ae47df87b9/12951_2022_1493_Fig11_HTML.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d373/9258070/a6ae47df87b9/12951_2022_1493_Fig11_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d373/9258070/87fa6be077d7/12951_2022_1493_Fig1_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d373/9258070/6ced42420c2f/12951_2022_1493_Fig2_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d373/9258070/01ac83dee642/12951_2022_1493_Fig3_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d373/9258070/0da71614c0ef/12951_2022_1493_Fig4_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d373/9258070/ef6318b06bb4/12951_2022_1493_Fig5_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d373/9258070/7def63089e28/12951_2022_1493_Fig6_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d373/9258070/6f58833edd77/12951_2022_1493_Fig7_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d373/9258070/59280c6f8dc0/12951_2022_1493_Fig8_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d373/9258070/96db920656e0/12951_2022_1493_Fig9_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d373/9258070/04a59ace07dc/12951_2022_1493_Fig10_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d373/9258070/a6ae47df87b9/12951_2022_1493_Fig11_HTML.jpg

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