Matrix Metalloproteinases in Renal Pathophysiology
Summary
Matrix metalloproteinases (MMPs) are zinc-dependent endopeptidases that orchestrate the remodelling of the extracellular matrix (ECM) within the kidney, regulating basement membrane turnover, cell migration and growth factor availability. Under physiological conditions, a balance between MMPs and their endogenous inhibitors (TIMPs) maintains tissue homeostasis and filtration barrier integrity. In disease states—such as diabetic nephropathy, hypertensive nephrosclerosis and acute kidney injury—dysregulated MMP activity contributes to glomerulosclerosis, tubular atrophy and interstitial fibrosis. Pro-inflammatory cytokines, reactive oxygen species and activation of the renin–angiotensin system drive aberrant MMP expression, which in turn influences signalling pathways including PI3K/AKT and Notch. Conversely, selective MMP activity can promote reparative processes, resolving ECM accumulation and dampening inflammation. Advances in molecular diagnostics propose circulating and urinary MMP profiles as early biomarkers of renal injury, while therapeutic strategies targeting specific MMPs or modulating TIMP expression hold promise for precision nephrology.
Research from Nature Portfolio
Recent studies have elucidated the role of distinct MMP isoforms in diabetic and obesity-related renal injury. In a model of early diabetic kidney disease, MMP-10 expression was shown to rise in glomerular and tubular compartments, correlating with the onset of albuminuria; angiotensin II receptor blockade normalised MMP-10 levels and abrogated proteinuria. Separately, deletion of MMP-12 in high-fat-fed mice attenuated glomerular matrix deposition, oxidative stress and macrophage infiltration, thereby mitigating fibrogenesis and glomerulosclerosis. These investigations highlight the therapeutic potential of targeting specific MMPs to restore ECM homeostasis and curb inflammatory signalling in renal pathophysiology.
Matrix Metalloproteinases in Renal Pathophysiology publication trend
The graph below shows the total number of articles in matrix metalloproteinases in renal pathophysiology across all publications each year (not limited to Nature Index journals).
Technical terms
Matrix Metalloproteinases (MMPs): A family of zinc-dependent enzymes that degrade extracellular matrix components and modulate cell signalling.
Extracellular Matrix (ECM): A complex network of collagen, elastin and glycoproteins providing structural and biochemical support to renal tissues.
Basement Membrane: A specialised ECM layer beneath epithelial and endothelial cells, crucial for filtration barrier function.
Epithelial–Mesenchymal Transition (EMT): A process by which epithelial cells acquire mesenchymal traits, contributing to fibrosis and tissue remodelling.
Tissue Inhibitors of Metalloproteinases (TIMPs): Endogenous proteins that regulate MMP activity to preserve extracellular matrix balance.
References
- MMP-10 is Increased in Early Stage Diabetic Kidney Disease and can be Reduced by Renin-Angiotensin System Blockade. Scientific Reports (2020).
- Matrix metalloproteinase 12 modulates high-fat-diet induced glomerular fibrogenesis and inflammation in a mouse model of obesity. Scientific Reports (2016).
- Network pharmacology, molecular docking, and experimental verification reveal the mechanism of San-Huang decoction in treating acute kidney injury. Frontiers in Pharmacology (2023).
- Kaempferol Ameliorates Renal Remodelling by Inhibiting the Renin‐Angiotensin System Cascade in Hypertensive Rats. Journal of Food Biochemistry (2024).
- MMP-2 and 9 in Chronic Kidney Disease. International Journal of Molecular Sciences (2017).
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