The integrated transcriptome bioinformatics analysis identifies key genes and cellular components for proliferative...

Area of Science:

• Ophthalmology
• Genetics
• Bioinformatics

Background:

• Proliferative Diabetic Retinopathy (PDR) is a major cause of blindness linked to diabetes.
• The molecular mechanisms underlying PDR pathogenesis remain incompletely understood.
• RNA sequencing has begun to reveal genes and cellular components involved in PDR.

Purpose of the Study:

• To identify novel target genes and cellular components in Proliferative Diabetic Retinopathy (PDR).
• To elucidate the intrinsic molecular mechanisms of PDR using integrated bioinformatics analysis.
• To discover potential gene signatures and therapeutic targets for PDR.

Main Methods:

• Integrated analysis of two bulk RNA-sequencing and one single-cell RNA-sequencing dataset from PDR patients and controls.
• Identification of differentially expressed genes (DEGs) between PDR and control groups.
• Analysis of ligand-receptor interactions and Protein-Protein Interaction (PPI) networks to identify key proteins.

Main Results:

• 176 differentially expressed genes (DEGs) were identified between PDR patients and controls.
• 14 proteins were found in the overlap of ligand-receptor interactions and PPI networks.
• CD44, ICAM1, and POSTN were identified as PDR-associated proteins, with POSTN potentially acting as a key ligand.

Conclusions:

• This integrated bioinformatics analysis provides novel insights into PDR molecular mechanisms.
• POSTN is highlighted as a potential key ligand and therapeutic target for PDR.
• The identified gene signatures may aid in the future diagnosis and treatment of Proliferative Diabetic Retinopathy.