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Scientists Discover Protein That Triggers Diabetic Blindness

Published on June 23, 2026, 7:41 p.m.
Scientists Discover Protein That Triggers Diabetic Blindness

Topic: Health

Researchers at UCL have found a protein that causes diabetic retinopathy, a leading cause of vision loss. This discovery could lead to new treatments that prevent blindness in people with diabetes.

In a breakthrough study, scientists at the University College London (UCL) Institute of Ophthalmology discovered a protein called LRG1 that triggers diabetic retinopathy, a common eye disease caused by high blood sugar levels. Diabetic retinopathy is one of the leading causes of vision loss among working-age adults.

The study found that LRG1 causes cells surrounding tiny blood vessels in the retina to tighten excessively, reducing oxygen delivery and starting a chain reaction that can eventually lead to long-term vision impairment. In experiments using diabetic mouse models, scientists were able to block the activity of LRG1, preventing early retinal damage.

The new research suggests that LRG1 begins driving eye damage much earlier than another protein called VEGF. This means that targeting LRG1 could be a promising new approach for therapy, potentially intervening earlier and stopping the disease from progressing.

Why It Matters

This discovery is important because it could lead to new treatments that prevent blindness in people with diabetes. In India, where diabetes is a growing concern, this research has the potential to improve the lives of millions of people living with the condition.

Key Facts

  • Scientists at UCL discovered a protein called LRG1 that triggers diabetic retinopathy
  • LRG1 causes cells surrounding tiny blood vessels in the retina to tighten excessively
  • Blocking the activity of LRG1 prevented early retinal damage in diabetic mouse models
  • The new research suggests that LRG1 begins driving eye damage much earlier than VEGF
  • Targeting LRG1 could be a promising new approach for therapy

Key Terms

LRG1
A protein discovered by scientists at UCL that triggers diabetic retinopathy

Implications

This discovery is important because it could lead to new treatments that prevent blindness in people with diabetes. In India, where diabetes is a growing concern, this research has the potential to improve the lives of millions of people living with the condition.


Source: https://www.sciencedaily.com/releases/2026/03/260306224225.htm

Journal Reference:

  1. Giulia De Rossi, Ao-wang Qiu, Maxime Berg, Thomas Burgoyne, Andrea Martello, Marlene E. Da Vitoria Lobo, Matteo Rizzi, Sophie Mueller, Jack Blackburn, Yuxuan Meng, Simon Walker-Samuel, Rebecca Shipley, Colin J. Chu, Sobha Sivaprasad, John Greenwood, Stephen E. Moss. Leucine-rich α-2-glycoprotein 1 initiates the onset of diabetic retinopathy in mice. Science Translational Medicine, 2025; 17 (821) DOI: 10.1126/scitranslmed.adn6047

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