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Updated: Jun 18, 2025

Comparative Proteomic Analysis of Whole Kidney, Medulla, and Cortical Tubules in Diabetic Pathogenesis of Kidney Injury in Mice
Published on: May 2, 2025
Emerging role and the signaling pathways of uncoupling protein 2 in kidney diseases
1Department of Pediatrics, Shanghai Sixth People's Hospital, Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China.
Objectives:
Uncoupling protein 2 (UCP2) was involved in the pathogenesis and development of kidney diseases. Many signaling pathways and factors regulate the expression of UCP2. We aimed to investigate the precise role of UCP2 and its signaling pathways in kidney diseases.
Methods:
We summarized the available evidence to yield a more detailed conclusion of the signal transduction pathways of UCP2 and its role in the development and progression of kidney diseases.
Results:
UCP2 could interact with 14.3.3 family proteins, mitochondrial phospholipase iPLA2γ, NMDAR, glucokinase, PPARγ2. There existed a signaling pathway between UCP2 and NMDAR, PPARγ. UCP2 can inhibit the ROS production, inflammatory response, and apoptosis, which may protect against renal injury, particularly AKI. Meanwhile UCP2 can decrease ATP production and inhibit the secretion of insulin, which may alleviate chronic renal damages, such as diabetic nephropathy and kidney fibrosis.
Conclusions:
Homeostasis of UCP2 is helpful for kidney health. UCP2 may play different roles in different kinds of renal injury.
Insights
Uncoupling protein 2 (UCP2) plays a key role in kidney disease development. Maintaining UCP2 homeostasis is crucial for kidney health, with its specific functions varying across different renal injuries.
Area of Science:
- Nephrology
- Molecular Biology
- Biochemistry
Background:
- Uncoupling protein 2 (UCP2) is implicated in the pathogenesis and progression of kidney diseases.
- Numerous signaling pathways and factors influence UCP2 expression and function.
Purpose of the Study:
- To investigate the precise role of UCP2 in kidney diseases.
- To elucidate the signaling pathways regulating UCP2 in renal contexts.
Main Methods:
- A comprehensive review and summarization of existing evidence.
- Analysis of UCP2 interactions and signaling pathways in kidney disease models.
Main Results:
- UCP2 interacts with proteins like 14.3.3, iPLA2γ, NMDAR, glucokinase, and PPARγ.
- UCP2 signaling pathways involving NMDAR and PPARγ were identified.
- UCP2 inhibits reactive oxygen species (ROS) production, inflammation, and apoptosis, offering protection against acute kidney injury (AKI).
- UCP2 reduces ATP production and insulin secretion, potentially mitigating chronic kidney damage like diabetic nephropathy and fibrosis.
Conclusions:
- Maintaining UCP2 homeostasis is beneficial for overall kidney health.
- UCP2 exhibits context-dependent roles, potentially exerting different effects in various types of renal injury.
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