Understanding the Molecular Basis of Pathological Retinal Angiogenesis: Roles of Lipids, Non-Coding RNAs, and...

Area of Science:

• Ophthalmology
• Cell Biology
• Molecular Biology

Background:

• Pathological retinal neovascularization causes blindness in millions, affecting various retinal diseases like diabetic retinopathy (DR), retinopathy of prematurity (ROP), and age-related macular degeneration (AMD).
• Current research has focused on vascular endothelial growth factor (VEGF) signaling, hypoxia-inducible factor (HIF) signaling, and inflammation.
• Emerging evidence highlights the role of novel molecular mediators and retinal cell types in neovascularization.

Purpose of the Study:

• To review the significance of lipid mediators and non-coding RNAs in pathological retinal neovascularization.
• To emphasize the role of various retinal cell types, including endothelial cells (ECs), pericytes, glial cells, and retinal pigment epithelium (RPE), in neovascularization.
• To explore interactions among retinal cells in maintaining homeostasis and their dysregulation in diseases.

Main Methods:

• Literature review focusing on recent breakthroughs in retinal neovascularization research.
• Analysis of studies investigating molecular substances like lipid mediators and non-coding RNAs.
• Examination of research on cellular players such as ECs, pericytes, glial cells, and RPE.

Main Results:

• Lipid mediators and non-coding RNAs are increasingly recognized as crucial regulators of pathological neovascularization.
• Interactions between ECs, pericytes, glial cells, and RPE are vital for retinal homeostasis and disease pathogenesis.
• Dysregulation of these cellular and molecular interactions contributes to neovascularization in DR, AMD, and ROP.

Conclusions:

• Therapeutic strategies should expand beyond VEGF-centric approaches to include novel molecules and cellular interactions.
• Targeting the interplay between various retinal cells and newly identified mediators holds promise for treating blinding retinal diseases.
• A comprehensive understanding of these complex pathways is essential for developing effective treatments for pathological retinal neovascularization.