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体外脑内皮细胞屏障模型揭示了疟原虫血期因子引起的改变。

In vitro model of brain endothelial cell barrier reveals alterations induced by Plasmodium blood stage factors.

机构信息

Instituto Gulbenkian de Ciência, Rua da Quinta Grande, 6, 2780-156, Oeiras, Portugal.

出版信息

Parasitol Res. 2023 Mar;122(3):729-737. doi: 10.1007/s00436-023-07782-x. Epub 2023 Jan 25.


DOI:10.1007/s00436-023-07782-x
PMID:36694092
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9988999/
Abstract

Cerebral malaria (CM) is a severe neurological condition caused by Plasmodium falciparum. Disruption of the brain-blood barrier (BBB) is a key pathological event leading to brain edema and vascular leakage in both humans and in the mouse model of CM. Interactions of brain endothelial cells with infected red blood cells (iRBCs) and with circulating inflammatory mediators and immune cells contribute to BBB dysfunction in CM. Adjunctive therapies for CM aim at preserving the BBB to prevent neurologic deficits. Experimental animal and cellular models are essential to develop new therapeutic strategies. However, in mice, the disease develops rapidly, which offers a very narrow time window for testing the therapeutic potential of drugs acting in the BBB. Here, we establish a brain endothelial cell barrier whose disturbance can be monitored by several parameters. Using this system, we found that incubation with iRBCs and with extracellular particles (EPs) released by iRBCs changes endothelial cell morphology, decreases the tight junction protein zonula occludens-1 (ZO-1), increases the gene expression of the intercellular adhesion molecule 1 (ICAM-1), and induces a significant reduction in transendothelial electrical resistance (TEER) with increased permeability. We propose this in vitro experimental setup as a straightforward tool to investigate molecular interactions and pathways causing endothelial barrier dysfunction and to test compounds that may target BBB and be effective against CM. A pre-selection of the effective compounds that strengthen the resistance of the brain endothelial cell barrier to Plasmodium-induced blood factors in vitro may increase the likelihood of their efficacy in preclinical disease mouse models of CM and in subsequent clinical trials with patients.

摘要

脑型疟疾(CM)是由恶性疟原虫引起的严重神经疾病。血脑屏障(BBB)的破坏是导致人类和 CM 小鼠模型中脑水肿和血管渗漏的关键病理事件。脑内皮细胞与感染的红细胞(iRBC)以及循环炎症介质和免疫细胞的相互作用导致 CM 中的 BBB 功能障碍。CM 的辅助治疗旨在保护 BBB 以预防神经功能缺损。实验动物和细胞模型对于开发新的治疗策略至关重要。然而,在小鼠中,疾病发展迅速,这为测试作用于 BBB 的药物的治疗潜力提供了非常狭窄的时间窗口。在这里,我们建立了一个脑内皮细胞屏障,其可以通过几个参数来监测其障碍。使用该系统,我们发现与 iRBC 以及由 iRBC 释放的细胞外颗粒(EP)孵育会改变内皮细胞形态,降低紧密连接蛋白闭合蛋白-1(ZO-1),增加细胞间黏附分子 1(ICAM-1)的基因表达,并诱导显著降低跨内皮电阻(TEER),同时增加通透性。我们提出这种体外实验装置作为一种简单的工具来研究导致内皮屏障功能障碍的分子相互作用和途径,并测试可能靶向 BBB 并对 CM 有效的化合物。在体外筛选有效化合物以增强脑内皮细胞对疟原虫诱导的血液因子的抵抗力,可能会增加其在 CM 疾病小鼠模型和随后的临床试验中的有效性的可能性。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/117b/9988999/acf96244cfd1/436_2023_7782_Fig4_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/117b/9988999/18d673c76cff/436_2023_7782_Fig1_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/117b/9988999/3d8874f682a3/436_2023_7782_Fig2_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/117b/9988999/93667b65d070/436_2023_7782_Fig3_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/117b/9988999/acf96244cfd1/436_2023_7782_Fig4_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/117b/9988999/18d673c76cff/436_2023_7782_Fig1_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/117b/9988999/3d8874f682a3/436_2023_7782_Fig2_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/117b/9988999/93667b65d070/436_2023_7782_Fig3_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/117b/9988999/acf96244cfd1/436_2023_7782_Fig4_HTML.jpg

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引用本文的文献

[1]
A human pluripotent stem cell-derived in vitro model of the blood-brain barrier in cerebral malaria.

Fluids Barriers CNS. 2024-5-1

[2]
Brain endothelial cells exposure to malaria parasites links type I interferon signalling to antigen presentation, immunoproteasome activation, endothelium disruption, and cellular metabolism.

Front Immunol. 2023

本文引用的文献

[1]
Brain endothelial STING1 activation by -sequestered heme promotes cerebral malaria via type I IFN response.

Proc Natl Acad Sci U S A. 2022-9-6

[2]
Blockade of caspase cascade overcomes malaria-associated acute respiratory distress syndrome in mice.

Cell Death Dis. 2022-2-10

[3]
Human Induced Pluripotent Stem Cell-Derived Brain Endothelial Cells: Current Controversies.

Front Physiol. 2021-3-31

[4]
Plasmodium falciparum erythrocyte membrane protein 1 variants induce cell swelling and disrupt the blood-brain barrier in cerebral malaria.

J Exp Med. 2021-3-1

[5]
Cytokines and Chemokines in Cerebral Malaria Pathogenesis.

Front Cell Infect Microbiol. 2017-7-20

[6]
In Vivo Tracking of Edema Development and Microvascular Pathology in a Model of Experimental Cerebral Malaria Using Magnetic Resonance Imaging.

J Vis Exp. 2017-6-8

[7]
Magnetic Resonance Imaging of Cerebral Malaria Patients Reveals Distinct Pathogenetic Processes in Different Parts of the Brain.

mSphere. 2017-6-7

[8]
Structure-Guided Identification of a Family of Dual Receptor-Binding PfEMP1 that Is Associated with Cerebral Malaria.

Cell Host Microbe. 2017-3-8

[9]
Infected erythrocyte-derived extracellular vesicles alter vascular function via regulatory Ago2-miRNA complexes in malaria.

Nat Commun. 2016-10-10

[10]
Angiotensin receptors and β-catenin regulate brain endothelial integrity in malaria.

J Clin Invest. 2016-10-3

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