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MicroRNA-411 plays a protective role in diabetic retinopathy through targeted regulating Robo4

K Hu1, J-L Li, X-W Yuan

  • 1Department of Ophthalmology, Nanjing Drum Tower Hospital, the Affiliated Hospital of Nanjing University Medical School, Nanjing University, Nanjing, China. hukai70@163.com.

European Review for Medical and Pharmacological Sciences
|November 28, 2019
PubMed
Abstract

Insights

MicroRNA-411 is decreased in diabetic retinopathy (DR) and protects against the disease. It achieves this by negatively regulating Roundabout 4 (ROBO4) expression, offering a potential therapeutic target for DR.

Area of Science:

  • Ophthalmology
  • Molecular Biology
  • Endocrinology

Background:

  • Diabetic retinopathy (DR) is a microvascular complication of diabetes.
  • Understanding the molecular mechanisms underlying DR is crucial for developing effective treatments.

Purpose of the Study:

  • To investigate the role of microRNA-411 in a rat model of diabetic retinopathy.
  • To elucidate the mechanism by which microRNA-411 influences DR, focusing on its interaction with Roundabout 4 (ROBO4).

Main Methods:

  • Established a rat model of diabetes and compared it to a control group.
  • Measured blood glucose, body weight, and expression levels of microRNA-411 and ROBO4.
  • Utilized Dual-Luciferase reporter gene assay and human retinal pigment epithelial cells (ARPE-19) to verify the microRNA-411 and ROBO4 interaction.
  • Investigated the effects of high glucose and hypoxia on ARPE-19 cells and the role of microRNA-411.

Main Results:

  • Diabetic rats showed increased blood glucose, decreased body weight, reduced microRNA-411, and increased ROBO4 expression.
  • Confirmed a direct binding relationship between microRNA-411 and ROBO4, with microRNA-411 inhibiting ROBO4 expression.
  • High glucose and hypoxia impaired ARPE-19 cell viability and increased permeability, effects partially reversed by up-regulating microRNA-411 or down-regulating ROBO4.

Conclusions:

  • MicroRNA-411 is significantly down-regulated in diabetic retinopathy.
  • MicroRNA-411 exerts a protective effect in DR, likely by negatively regulating ROBO4.
  • Targeting the microRNA-411/ROBO4 pathway may represent a novel therapeutic strategy for diabetic retinopathy.

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