MiR-204-5p may regulate oxidative stress in myopia

Area of Science:

• Ophthalmology
• Molecular Biology
• Genetics

Background:

• Myopia mechanisms are not fully understood.
• MicroRNAs play roles in various biological processes, including eye development.
• Oxidative stress is implicated in the pathogenesis of myopia.

Purpose of the Study:

• To investigate the role and mechanisms of miR-204-5p in myopia development.
• To identify potential molecular targets of miR-204-5p.
• To explore the relationship between miR-204-5p, TXNIP, and oxidative stress in myopia.

Main Methods:

• Assessed miR-204-5p expression in vitreous humor from high myopia patients and controls.
• Utilized ARPE-19 cells to study miR-204-5p function.
• Employed mRNA sequencing, luciferase assays, and western blotting to identify and confirm miR-204-5p targets.
• Measured reactive oxygen species (ROS) accumulation to assess oxidative stress.

Main Results:

• miR-204-5p expression was significantly reduced in the vitreous humor of high myopia patients.
• Overexpression of miR-204-5p suppressed proliferation, migration, invasion, and apoptosis in ARPE-19 cells.
• TXNIP was confirmed as a direct target of miR-204-5p, and its downregulation mediated miR-204-5p's cellular effects.
• miR-204-5p overexpression reduced ROS accumulation by targeting TXNIP.

Conclusions:

• The miR-204-5p/TXNIP axis plays a role in myopia development by regulating oxidative stress.
• miR-204-5p may serve as a potential therapeutic target for myopia.
• Further research is warranted to elucidate the complete role of this pathway in myopia pathogenesis.