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The ELAVL1-PLAUR-suPAR Axis Exacerbates Diabetic Nephropathy by Promoting Podocyte Injury and Inflammation
DanDan Xu1, Liang Xu1, LinLin Li1
1Department of Nephrology, Henan Provincial People's Hospital, Zhengzhou City, Henan Province, China.
Journal of Diabetes
|August 5, 2026
Summary
High glucose increases ELAVL1, which upregulates PLAUR and suPAR release from kidney podocytes, causing diabetic nephropathy. Targeting this ELAVL1-PLAUR-suPAR pathway may treat this kidney disease.
Area of Science:
- Nephrology
- Molecular Biology
- RNA Biology
Background:
- Diabetic nephropathy (DN) is a major cause of kidney failure.
- suPAR is implicated in podocyte damage and proteinuric kidney disorders.
- The role of ELAVL1 in suPAR release in DN is unknown.
Purpose of the Study:
- To investigate the role of ELAVL1 in regulating suPAR release in diabetic nephropathy.
- To elucidate the molecular mechanism linking ELAVL1, PLAUR, and suPAR in DN.
- To evaluate the therapeutic potential of targeting the ELAVL1-PLAUR-suPAR axis in DN.
Main Methods:
- Analysis of clinical DN samples.
- In vitro studies using high glucose-treated podocytes with ELAVL1 or PLAUR manipulation.
- In vivo studies in diabetic mice with podocyte-specific Elavl1 or Plaur gene manipulation.
- Assessment of renal function, glomerular pathology, and inflammatory markers.
Main Results:
- ELAVL1 expression was elevated in DN and correlated with podocyte injury.
- ELAVL1 knockdown reduced hyperglycemia-induced podocyte damage and inflammation.
- ELAVL1 directly stabilized PLAUR mRNA, increasing uPAR and suPAR levels.
- Podocyte-specific Elavl1 or Plaur knockdown in diabetic mice reduced suPAR and alleviated kidney injury.
Conclusions:
- Hyperglycemia-induced ELAVL1 promotes DN by upregulating PLAUR and suPAR release from podocytes.
- The ELAVL1-PLAUR-suPAR axis is a key driver of renal inflammation and injury in DN.
- Targeting the ELAVL1-PLAUR-suPAR pathway presents a potential therapeutic strategy for diabetic nephropathy.
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