Transcriptome Analysis of Tear-Derived Extracellular Vesicles as Biomarkers for Diabetic Retinopathy

Area of Science:

• Ophthalmology
• Genomics
• Biomarker Discovery

Background:

• Diabetic retinopathy (DR) is a leading cause of blindness globally.
• Current diagnostic methods for DR lack sufficient early-stage detection biomarkers.
• Tear fluid offers a noninvasive source for ocular biomarkers due to its proximity to the retina.

Purpose of the Study:

• To identify novel biomarkers in tear-derived extracellular vesicles (tEVs) for diabetic retinopathy (DR).
• To evaluate the diagnostic potential of specific tEV-mRNAs for DR detection.

Main Methods:

• Comprehensive transcriptomic analysis of tear-derived extracellular vesicles (tEVs).
• Identification and validation of key tEV-mRNAs (ODF2L, TSR1, TONSL, FUT6) as potential DR biomarkers.
• Analysis of 119 tear samples from healthy individuals and DR patients.

Main Results:

• A panel of tEV-mRNAs, including ODF2L, TSR1, TONSL, and FUT6, was identified as potential biomarkers for DR.
• Validation confirmed the association of these tEV-mRNAs with varying degrees of retinopathy.
• Tear collection is a noninvasive and straightforward procedure.

Conclusions:

• Identified tEV-mRNAs show significant promise for the early, noninvasive diagnosis of diabetic retinopathy.
• This discovery could lead to improved management strategies for DR patients.
• Tear-derived biomarkers offer a novel avenue for ophthalmological diagnostics.