FPR2 at the crossroads of inflammation and repair in the eye

Area of Science:

• Ophthalmology
• Immunology
• G protein-coupled receptors

Background:

• Chronic inflammation in the retina and cornea can lead to vision loss.
• Formyl peptide receptors (FPRs) are G protein-coupled receptors involved in inflammation, neuronal survival, and angiogenesis.
• FPR2 plays a critical role in ocular inflammatory processes.

Purpose of the Study:

• To review the dual, stage-dependent roles of FPR2 in ocular diseases.
• To explore the therapeutic potential of modulating FPR2 activity in various eye conditions.
• To examine the molecular mechanisms underlying FPR2's divergent effects.

Main Methods:

• Literature review of preclinical studies on FPR2 in ocular diseases.
• Analysis of signaling pathways and ligand specificity associated with FPR2.
• Examination of FPR2's role in conditions like diabetic retinopathy, keratitis, and neovascularization.

Main Results:

• FPR2 exhibits context-specific functions, where both activation and inhibition can be therapeutically beneficial.
• Targeting FPR2 has shown promise in preclinical models for diabetic retinopathy, keratitis, choroidal and corneal neovascularization, and re-epithelialization.
• The precise modulation of FPR2 is crucial due to its stage-dependent effects.

Conclusions:

• FPR2 is a complex but promising therapeutic target in ophthalmology.
• Stage-tailored modulation of FPR2 is essential for harnessing its therapeutic benefits in ocular diseases.
• Understanding FPR2's molecular mechanisms and ligand specificity is key to developing effective treatments.