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Astrocyte-Derived TGFβ1 Facilitates Blood–Brain Barrier Function via Non-Canonical Hedgehog Signaling in Brain Microvascular Endothelial Cells
The blood–brain barrier is a specialized structure in mammals, separating the brain from the bloodstream and maintaining the homeostasis of the central nervous system. The barrier is composed of various types of cells, and the communication between these cells is critical to blood–brain barrier (BBB...
Autores principales: | , , , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7826596/ https://www.ncbi.nlm.nih.gov/pubmed/33430164 http://dx.doi.org/10.3390/brainsci11010077 |
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author | Fu, Jiyang Li, Liang Huo, Dong Zhi, Shuli Yang, Ruicheng Yang, Bo Xu, Bojie Zhang, Tao Dai, Menghong Tan, Chen Chen, Huanchun Wang, Xiangru |
author_facet | Fu, Jiyang Li, Liang Huo, Dong Zhi, Shuli Yang, Ruicheng Yang, Bo Xu, Bojie Zhang, Tao Dai, Menghong Tan, Chen Chen, Huanchun Wang, Xiangru |
author_sort | Fu, Jiyang |
collection | PubMed |
description | The blood–brain barrier is a specialized structure in mammals, separating the brain from the bloodstream and maintaining the homeostasis of the central nervous system. The barrier is composed of various types of cells, and the communication between these cells is critical to blood–brain barrier (BBB) function. Here, we demonstrate the astrocyte-derived TGFβ1-mediated intercellular communication between astrocytes and brain microvascular endothelial cells (BMECs). By using an in vitro co-culture model, we observed that the astrocyte-derived TGFβ1 enhanced the tight junction protein ZO-1 expression in BMECs and the endothelial barrier function via a non-canonical hedgehog signaling. Gli2, the core transcriptional factor of the hedgehog pathway, was demonstrated to modulate ZO-1 expression directly. By the dual-luciferase reporter system and chromatin immunoprecipitation, we further identified the exact sites on Smad2/3 that bound to the gli2 promotor and on Gli2 that bound to the zo-1 promotor. Our work highlighted the TGFβ1-mediated intercellular communication of astrocytes with BMECs in BBB, which shall extend current knowledge on the BBB homeostasis physiologically, and more importantly suggests TGFβ1 as a potential effector for future prevention and amelioration of BBB dysfunction. |
format | Online Article Text |
id | pubmed-7826596 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-78265962021-01-25 Astrocyte-Derived TGFβ1 Facilitates Blood–Brain Barrier Function via Non-Canonical Hedgehog Signaling in Brain Microvascular Endothelial Cells Fu, Jiyang Li, Liang Huo, Dong Zhi, Shuli Yang, Ruicheng Yang, Bo Xu, Bojie Zhang, Tao Dai, Menghong Tan, Chen Chen, Huanchun Wang, Xiangru Brain Sci Article The blood–brain barrier is a specialized structure in mammals, separating the brain from the bloodstream and maintaining the homeostasis of the central nervous system. The barrier is composed of various types of cells, and the communication between these cells is critical to blood–brain barrier (BBB) function. Here, we demonstrate the astrocyte-derived TGFβ1-mediated intercellular communication between astrocytes and brain microvascular endothelial cells (BMECs). By using an in vitro co-culture model, we observed that the astrocyte-derived TGFβ1 enhanced the tight junction protein ZO-1 expression in BMECs and the endothelial barrier function via a non-canonical hedgehog signaling. Gli2, the core transcriptional factor of the hedgehog pathway, was demonstrated to modulate ZO-1 expression directly. By the dual-luciferase reporter system and chromatin immunoprecipitation, we further identified the exact sites on Smad2/3 that bound to the gli2 promotor and on Gli2 that bound to the zo-1 promotor. Our work highlighted the TGFβ1-mediated intercellular communication of astrocytes with BMECs in BBB, which shall extend current knowledge on the BBB homeostasis physiologically, and more importantly suggests TGFβ1 as a potential effector for future prevention and amelioration of BBB dysfunction. MDPI 2021-01-08 /pmc/articles/PMC7826596/ /pubmed/33430164 http://dx.doi.org/10.3390/brainsci11010077 Text en © 2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Fu, Jiyang Li, Liang Huo, Dong Zhi, Shuli Yang, Ruicheng Yang, Bo Xu, Bojie Zhang, Tao Dai, Menghong Tan, Chen Chen, Huanchun Wang, Xiangru Astrocyte-Derived TGFβ1 Facilitates Blood–Brain Barrier Function via Non-Canonical Hedgehog Signaling in Brain Microvascular Endothelial Cells |
title | Astrocyte-Derived TGFβ1 Facilitates Blood–Brain Barrier Function via Non-Canonical Hedgehog Signaling in Brain Microvascular Endothelial Cells |
title_full | Astrocyte-Derived TGFβ1 Facilitates Blood–Brain Barrier Function via Non-Canonical Hedgehog Signaling in Brain Microvascular Endothelial Cells |
title_fullStr | Astrocyte-Derived TGFβ1 Facilitates Blood–Brain Barrier Function via Non-Canonical Hedgehog Signaling in Brain Microvascular Endothelial Cells |
title_full_unstemmed | Astrocyte-Derived TGFβ1 Facilitates Blood–Brain Barrier Function via Non-Canonical Hedgehog Signaling in Brain Microvascular Endothelial Cells |
title_short | Astrocyte-Derived TGFβ1 Facilitates Blood–Brain Barrier Function via Non-Canonical Hedgehog Signaling in Brain Microvascular Endothelial Cells |
title_sort | astrocyte-derived tgfβ1 facilitates blood–brain barrier function via non-canonical hedgehog signaling in brain microvascular endothelial cells |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7826596/ https://www.ncbi.nlm.nih.gov/pubmed/33430164 http://dx.doi.org/10.3390/brainsci11010077 |
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