The neurorepellent, Slit2, prevents macrophage lipid loading by inhibiting CD36-dependent binding and internalization of oxidized low-density lipoprotein

Abstract Atherosclerosis is characterized by retention of modified lipoproteins, especially oxidized low density lipoprotein (oxLDL) within the sub-endothelial space of affected blood vessels. Recruited monocyte-derived and tissue-resident macrophages subsequently ingest oxLDL by binding and interna...

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Autores principales: Bushra Yusuf, Ilya Mukovozov, Sajedabanu Patel, Yi-Wei Huang, Guang Ying Liu, Emily C. Reddy, Marko Skrtic, Michael Glogauer, Lisa A. Robinson
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Publicado: Nature Portfolio 2021
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spelling oai:doaj.org-article:692c0813c2d5464cb7a9503427c023972021-12-02T14:26:47ZThe neurorepellent, Slit2, prevents macrophage lipid loading by inhibiting CD36-dependent binding and internalization of oxidized low-density lipoprotein10.1038/s41598-021-83046-x2045-2322https://doaj.org/article/692c0813c2d5464cb7a9503427c023972021-02-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-83046-xhttps://doaj.org/toc/2045-2322Abstract Atherosclerosis is characterized by retention of modified lipoproteins, especially oxidized low density lipoprotein (oxLDL) within the sub-endothelial space of affected blood vessels. Recruited monocyte-derived and tissue-resident macrophages subsequently ingest oxLDL by binding and internalizing oxLDL via scavenger receptors, particularly CD36. The secreted neurorepellent, Slit2, acting through its transmembrane receptor, Roundabout-1 (Robo-1), was previously shown to inhibit recruitment of monocytes into nascent atherosclerotic lesions. The effects of Slit2 on oxLDL uptake by macrophages have not been explored. We report here that Slit2 inhibits uptake of oxLDL by human and murine macrophages, and the resulting formation of foam cells, in a Rac1-dependent and CD36-dependent manner. Exposure of macrophages to Slit2 prevented binding of oxLDL to the surface of cells. Using super-resolution microscopy, we observed that exposure of macrophages to Slit2 induced profound cytoskeletal remodeling with formation of a thick ring of cortical actin within which clusters of CD36 could not aggregate, thereby attenuating binding of oxLDL to the surface of cells. By inhibiting recruitment of monocytes into early atherosclerotic lesions, and the subsequent binding and internalization of oxLDL by macrophages, Slit2 could represent a potent new tool to combat individual steps that collectively result in progression of atherosclerosis.Bushra YusufIlya MukovozovSajedabanu PatelYi-Wei HuangGuang Ying LiuEmily C. ReddyMarko SkrticMichael GlogauerLisa A. RobinsonNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-13 (2021)
institution DOAJ
collection DOAJ
language EN
topic Medicine
R
Science
Q
spellingShingle Medicine
R
Science
Q
Bushra Yusuf
Ilya Mukovozov
Sajedabanu Patel
Yi-Wei Huang
Guang Ying Liu
Emily C. Reddy
Marko Skrtic
Michael Glogauer
Lisa A. Robinson
The neurorepellent, Slit2, prevents macrophage lipid loading by inhibiting CD36-dependent binding and internalization of oxidized low-density lipoprotein
description Abstract Atherosclerosis is characterized by retention of modified lipoproteins, especially oxidized low density lipoprotein (oxLDL) within the sub-endothelial space of affected blood vessels. Recruited monocyte-derived and tissue-resident macrophages subsequently ingest oxLDL by binding and internalizing oxLDL via scavenger receptors, particularly CD36. The secreted neurorepellent, Slit2, acting through its transmembrane receptor, Roundabout-1 (Robo-1), was previously shown to inhibit recruitment of monocytes into nascent atherosclerotic lesions. The effects of Slit2 on oxLDL uptake by macrophages have not been explored. We report here that Slit2 inhibits uptake of oxLDL by human and murine macrophages, and the resulting formation of foam cells, in a Rac1-dependent and CD36-dependent manner. Exposure of macrophages to Slit2 prevented binding of oxLDL to the surface of cells. Using super-resolution microscopy, we observed that exposure of macrophages to Slit2 induced profound cytoskeletal remodeling with formation of a thick ring of cortical actin within which clusters of CD36 could not aggregate, thereby attenuating binding of oxLDL to the surface of cells. By inhibiting recruitment of monocytes into early atherosclerotic lesions, and the subsequent binding and internalization of oxLDL by macrophages, Slit2 could represent a potent new tool to combat individual steps that collectively result in progression of atherosclerosis.
format article
author Bushra Yusuf
Ilya Mukovozov
Sajedabanu Patel
Yi-Wei Huang
Guang Ying Liu
Emily C. Reddy
Marko Skrtic
Michael Glogauer
Lisa A. Robinson
author_facet Bushra Yusuf
Ilya Mukovozov
Sajedabanu Patel
Yi-Wei Huang
Guang Ying Liu
Emily C. Reddy
Marko Skrtic
Michael Glogauer
Lisa A. Robinson
author_sort Bushra Yusuf
title The neurorepellent, Slit2, prevents macrophage lipid loading by inhibiting CD36-dependent binding and internalization of oxidized low-density lipoprotein
title_short The neurorepellent, Slit2, prevents macrophage lipid loading by inhibiting CD36-dependent binding and internalization of oxidized low-density lipoprotein
title_full The neurorepellent, Slit2, prevents macrophage lipid loading by inhibiting CD36-dependent binding and internalization of oxidized low-density lipoprotein
title_fullStr The neurorepellent, Slit2, prevents macrophage lipid loading by inhibiting CD36-dependent binding and internalization of oxidized low-density lipoprotein
title_full_unstemmed The neurorepellent, Slit2, prevents macrophage lipid loading by inhibiting CD36-dependent binding and internalization of oxidized low-density lipoprotein
title_sort neurorepellent, slit2, prevents macrophage lipid loading by inhibiting cd36-dependent binding and internalization of oxidized low-density lipoprotein
publisher Nature Portfolio
publishDate 2021
url https://doaj.org/article/692c0813c2d5464cb7a9503427c02397
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