TFEB controls integrin-mediated endothelial cell adhesion by the regulation of cholesterol metabolism

The dynamic integrin-mediated adhesion of endothelial cells (ECs) to the surrounding ECM is fundamental for angiogenesis both in physiological and pathological conditions, such as embryonic development and cancer progression. The dynamics of EC-to-ECM adhesions relies on the regulation of the confor...

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Bibliographic Details
Published in:Angiogenesis (London) 2022-11, Vol.25 (4), p.471-492
Main Authors: Ariano, Camilla, Riganti, Chiara, Corà, Davide, Valdembri, Donatella, Mana, Giulia, Astanina, Elena, Serini, Guido, Bussolino, Federico, Doronzo, Gabriella
Format: Article
Language:English
Subjects:
Adhesion
Angiogenesis
Autophagy
Biomedical and Life Sciences
Biomedicine
Biosynthesis
Blood vessels
Cancer Research
Cardiology
Caveolin
Caveolin-1
Cell adhesion
Cell adhesion & migration
Cell Biology
Cell cycle
Cholesterol
Embryogenesis
Embryonic growth stage
Endocytosis
Endothelial cells
Extracellular matrix
Integrins
Ligands
Lipid metabolism
Metabolism
Oncology
Ophthalmology
Original Paper
Phase transitions
Physiology
Plasma
Proteins
Transcription factors
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Summary:The dynamic integrin-mediated adhesion of endothelial cells (ECs) to the surrounding ECM is fundamental for angiogenesis both in physiological and pathological conditions, such as embryonic development and cancer progression. The dynamics of EC-to-ECM adhesions relies on the regulation of the conformational activation and trafficking of integrins. Here, we reveal that oncogenic transcription factor EB (TFEB), a known regulator of lysosomal biogenesis and metabolism, also controls a transcriptional program that influences the turnover of ECM adhesions in ECs by regulating cholesterol metabolism. We show that TFEB favors ECM adhesion turnover by promoting the transcription of genes that drive the synthesis of cholesterol, which promotes the aggregation of caveolin-1, and the caveolin-dependent endocytosis of integrin β1. These findings suggest that TFEB might represent a novel target for the pharmacological control of pathological angiogenesis and bring new insights in the mechanism sustaining TFEB control of endocytosis.
ISSN:0969-6970
1573-7209
DOI:10.1007/s10456-022-09840-x