Disulfide-Appended siRNA Nanoeyedrops: Noninvasive Gene Therapy for Targeting Retinal Angiogenesis

Area of Science:

• Ophthalmology
• Gene Therapy
• Nanotechnology

Background:

• The eye is a prime target for gene therapy due to its accessibility.
• Noninvasive gene delivery to the retina faces significant challenges from ocular barriers.

Purpose of the Study:

• To develop a noninvasive gene delivery system for retinal diseases.
• To overcome ocular barriers using a novel nanotechnology approach.

Main Methods:

• Development of disulfide-appended small interfering RNA (DS-siRNA) Nanoeyedrops.
• Utilizing a thiol-mediated uptake route for retinal penetration.
• Testing efficacy in mouse models of choroidal neovascularization and retinoblastoma.

Main Results:

• DS-siRNA Nanoeyedrops enabled noninvasive and effective gene delivery to the retina.
• The thiol-mediated uptake successfully bypassed ocular barriers.
• Significant therapeutic effects were observed in disease models.

Conclusions:

• DS-siRNA Nanoeyedrops offer a promising noninvasive strategy for ocular gene delivery.
• This approach enhances bioavailability and provides a potential treatment for retinal diseases.