Neural stem cell-derived exosomes regulate cell proliferation, migration, and cell death of brain microvascular endothelial cells via the miR-9/Hes1 axis under hypoxia

© 2024 The Authors. Animal Models and Experimental Medicine published by John Wiley & Sons Australia, Ltd on behalf of The Chinese Association for Laboratory Animal Sciences..

BACKGROUND: Our previous study found that mouse embryonic neural stem cell (NSC)-derived exosomes (EXOs) regulated NSC differentiation via the miR-9/Hes1 axis. However, the effects of EXOs on brain microvascular endothelial cell (BMEC) dysfunction via the miR-9/Hes1 axis remain unknown. Therefore, the current study aimed to determine the effects of EXOs on BMEC proliferation, migration, and death via the miR-9/Hes1 axis.

METHODS: Immunofluorescence, quantitative real-time polymerase chain reaction, cell counting kit-8 assay, wound healing assay, calcein-acetoxymethyl/propidium iodide staining, and hematoxylin and eosin staining were used to determine the role and mechanism of EXOs on BMECs.

RESULTS: EXOs promoted BMEC proliferation and migration and reduced cell death under hypoxic conditions. The overexpression of miR-9 promoted BMEC proliferation and migration and reduced cell death under hypoxic conditions. Moreover, miR-9 downregulation inhibited BMEC proliferation and migration and also promoted cell death. Hes1 silencing ameliorated the effect of amtagomiR-9 on BMEC proliferation and migration and cell death. Hyperemic structures were observed in the regions of the hippocampus and cortex in hypoxia-induced mice. Meanwhile, EXO treatment improved cerebrovascular alterations.

CONCLUSION: NSC-derived EXOs can promote BMEC proliferation and migration and reduce cell death via the miR-9/Hes1 axis under hypoxic conditions. Therefore, EXO therapeutic strategies could be considered for hypoxia-induced vascular injury.

Medienart:

E-Artikel

Erscheinungsjahr:

2024

Erschienen:

2024

Enthalten in:

Zur Gesamtaufnahme - volume:7

Enthalten in:

Animal models and experimental medicine - 7(2024), 1 vom: 16. Feb., Seite 24-35

Sprache:

Englisch

Beteiligte Personen:

Deng, Xiaojun [VerfasserIn]
Hu, Xiaoyi [VerfasserIn]
Wang, Shang [VerfasserIn]
Zhao, Hui [VerfasserIn]
Wei, Yaqin [VerfasserIn]
Fu, Jiaqi [VerfasserIn]
Wu, Wenhui [VerfasserIn]
Liu, Jinming [VerfasserIn]
Zhang, Caicai [VerfasserIn]
Wang, Lili [VerfasserIn]
Yuan, Ping [VerfasserIn]

Links:

Volltext

Themen:

Brain microvascular endothelial cells
Exosomes
Hes1
Hes1 protein, mouse
Journal Article
MIRN9 microRNA, mouse
MiR‐9
MicroRNAs
Neural stem cells
Transcription Factor HES-1

Anmerkungen:

Date Completed 26.03.2024

Date Revised 27.03.2024

published: Print-Electronic

Citation Status MEDLINE

doi:

10.1002/ame2.12394

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM368597458