Isolation of Mouse Retinal Capillaries and Subendothelial Matrix for Stiffness Measurement Using Atomic Force Microscopy

作者： Irene Santiago Tierno1,2,3, Mahesh Agarwal1,2, Nikolaos Matisioudis2,4, Sathishkumar Chandrakumar1,2, Kaustabh Ghosh1,2,3 1Department of Ophthalmology,University of California, Los Angeles, 2Doheny Eye Institute, 3Molecular, Cellular, and Integrative Physiology Interdepartmental PhD Program,University of California, Los Angeles, 4Department of Bioengineering,University of Pennsylvania

简介：

Overview

This study explores the role of retinal capillary stiffness in retinal dysfunction linked to diabetes. Using mouse models, the protocol details the isolation of retinal capillaries and the subendothelial matrix while employing atomic force microscopy to measure stiffness.

Key Study Components

Research Area

• Diabetic retinopathy
• Retinal vascular inflammation
• Mechanobiology of blood vessels

Background

• Vascular inflammation contributes to retinal capillary degeneration in diabetes.
• Understanding mechanical cues like vascular stiffness is critical for addressing diabetic retinopathy.
• Focus on early intervention strategies to prevent the progression of retinal dysfunction.

Methods Used

• Isolation of retinal vessels and subendothelial matrix
• Mouse retinal endothelial cultures
• Atomic force microscopy for stiffness measurement

Main Results

• Identified increased stiffness in retinal capillaries during diabetes.
• Stiffer vessels are linked to retinal inflammation and degeneration.
• Measurement techniques validate the significance of vascular stiffness in diabetic retinopathy.

Conclusions

• The study elucidates the implications of mechanical changes in retinal capillaries due to diabetes.
• Findings may lead to new therapeutic avenues targeting inflammation in retinal diseases.

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