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Comparative Proteomic Analysis of Whole Kidney, Medulla, and Cortical Tubules in Diabetic Pathogenesis of Kidney Injury in Mice
Published on: May 2, 2025
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Increased podocyte Sirtuin-1 function attenuates diabetic kidney injury.
Quan Hong1, Lu Zhang2, Bhaskar Das3
1Department of Medicine, Division of Nephrology, Icahn School of Medicine at Mount Sinai, New York, New York, USA; Department of Nephrology, Chinese PLA General Hospital, Chinese PLA Institute of Nephrology, State Key Laboratory of Kidney Diseases, National Clinical Research Center of Kidney Diseases, Beijing, China.
Kidney International
|February 26, 2018
Summary
Increasing Sirtuin-1 (SIRT1) activity protects podocytes from injury and slows diabetic kidney disease progression. This involves reducing albuminuria and glomerular damage, highlighting SIRT1 as a therapeutic target.
Area of Science:
- Nephrology
- Molecular Biology
- Metabolic Diseases
Background:
- Podocyte injury and loss are key drivers of diabetic kidney disease (DKD) progression.
- Reduced glomerular Sirtuin-1 (SIRT1) expression is observed in human diabetic kidneys.
- Podocyte-specific SIRT1 deficiency exacerbates DKD in mice.
Purpose of the Study:
- To investigate if increased glomerular SIRT1 activity can ameliorate DKD pathogenesis.
- To evaluate the therapeutic potential of SIRT1 activation in diabetic nephropathy.
Main Methods:
- Inducible podocyte-specific SIRT1 overexpression in diabetic OVE26 mice.
- Administration of a novel SIRT1 agonist (BF175) to diabetic OVE26 mice.
- Assessment of albuminuria, glomerular injury, podocyte loss, and oxidative stress.
Main Results:
- Podocyte-specific SIRT1 overexpression attenuated diabetic glomerulopathy progression.
- BF175 treatment reduced albuminuria and glomerular injury, similar to SIRT1 overexpression.
- Both interventions reduced diabetes-induced podocyte loss and glomerular oxidative stress.
Conclusions:
- Increased SIRT1 activity protects against diabetes-induced podocyte injury.
- Enhanced SIRT1 activity effectively mitigates the progression of diabetic kidney disease.
- SIRT1 activation represents a promising therapeutic strategy for DKD.
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