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The role of thrombospondin-1 in trehalose-induced autophagy and ocular hypertension in mice
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The role of thrombospondin-1 in trehalose-induced autophagy and ocular hypertension in mice
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Journal Article
The role of thrombospondin-1 in trehalose-induced autophagy and ocular hypertension in mice
2025
Overview
Prolonged use of dexamethasone (DEX) increases intraocular pressure (IOP) and the risk of glaucoma. Recent studies have shown that DEX upregulates thrombospondin-1 (
THBS1
) gene expression and induces dysregulation of macroautophagy/autophagy in primary human trabecular meshwork (hTM) cells. Trehalose, a natural disaccharide, activates autophagy and protects cells against environmental stresses. Here, we report that trehalose-induced autophagy enhanced outflow facility, reduced IOP, and protected against ocular hypertension in mice. We analyzed autophagy induction by trehalose in hTM cells. Our data demonstrated that trehalose transcriptionally upregulated prototypical autophagy related genes and activated autophagy through the downregulation of
THBS1
. Consistent with prior findings, the results indicated that
THBS1
silencing or inhibition is a key cellular event for the regulation of aqueous humor outflow and IOP homeostasis. In conclusion, this study identified trehalose-induced autophagy as a protective mechanism against ocular hypertension which may have therapeutic potential.
Publisher
Nature Publishing Group UK,Nature Publishing Group,Nature Portfolio
Subject
/ Animals
/ Dexamethasone - adverse effects
/ Glaucoma
/ Glucose
/ Humanities and Social Sciences
/ Humans
/ Intraocular Pressure - drug effects
/ Ketamine
/ Kinases
/ Male
/ Mice
/ Ocular Hypertension - chemically induced
/ Ocular Hypertension - genetics
/ Ocular Hypertension - metabolism
/ Ocular Hypertension - pathology
/ Proteins
/ Science
/ Steroids
/ Thrombospondin 1 - metabolism
/ Trabecular Meshwork - drug effects
