2026-04-29T20:47:18Zhttps://repisalud.isciii.es/rest/oai/request

oai:repisalud.isciii.es:20.500.12105/193242024-09-21T11:21:31Zcom_20.500.12105_19604com_20.500.12105_2051col_20.500.12105_19605

00925njm 22002777a 4500 dc Li, Wenlu author Mandeville, Emiri T author Durán-Laforet, Violeta author Fukuda, Norito author Yu, Zhanyang author Zheng, Yi author Held, Aaron author Park, Ji-Hyun author Nakano, Takafumi author Tanaka, Masayoshi author Shi, Jingfei author Esposito, Elga author Niu, Wanting author Xing, Changhong author Hayakawa, Kazuhide author Lizasoain, Ignacio author van Leyen, Klaus author Ji, Xunming author Wainger, Brian J author Moro, Maria A author Lo, Eng H author 2022-12-19 The concept of the neurovascular unit emphasizes the importance of cell-cell signaling between neural, glial, and vascular compartments. In neurogenesis, for example, brain endothelial cells play a key role by supplying trophic support to neural progenitors. Here, we describe a surprising phenomenon where brain endothelial cells may release trans-differentiation signals that convert astrocytes into neural progenitor cells in male mice after stroke. After oxygen-glucose deprivation, brain endothelial cells release microvesicles containing pro-neural factor Ascl1 that enter into astrocytes to induce their trans-differentiation into neural progenitors. In mouse models of focal cerebral ischemia, Ascl1 is upregulated in endothelium prior to astrocytic conversion into neural progenitor cells. Injecting brain endothelial-derived microvesicles amplifies the process of astrocyte trans-differentiation. Endothelial-specific overexpression of Ascl1 increases the local conversion of astrocytes into neural progenitors and improves behavioral recovery. Our findings describe an unexpected vascular-regulated mechanism of neuroplasticity that may open up therapeutic opportunities for improving outcomes after stroke. Nat Commun. 2022 Dec 19;13(1):7812. 10.1038/s41467-022-35498-6 2041-1723 Nature communications 36535938 http://hdl.handle.net/20.500.12105/19324 Endothelial cells regulate astrocyte to neural progenitor cell trans-differentiation in a mouse model of stroke.