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Detection of Functional Matrix Metalloproteinases by Zymography
Published on: November 8, 2010
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Mitochondria-Associated Matrix Metalloproteinases 2 and 9 in Acute Renal Pathologies
I B Pevzner1,2, L D Zorova1,2, F A Galkin3
1A. N. Belozersky Research Institute of Physico-Chemical Biology, M. V. Lomonosov Moscow State University, Moscow, Russia.
Bulletin of Experimental Biology and Medicine
|January 11, 2019
Summary
Matrix metalloproteinases (MMPs), specifically MMP-2 and MMP-9, were studied in acute kidney injury models. Increased MMPs in kidney cells and active MMP-2 in mitochondria correlated with pyelonephritis severity.
Area of Science:
- Nephrology
- Molecular Biology
- Biochemistry
Background:
- Matrix metalloproteinases (MMPs), particularly MMP-2 and MMP-9, play roles in tissue remodeling and degradation.
- Their involvement in acute kidney pathologies is not fully understood, especially concerning subcellular localization.
Purpose of the Study:
- To investigate the activity and localization of MMP-2 and MMP-9 in kidney cells during acute renal pathologies.
- To determine the correlation between MMP levels and disease severity in pyelonephritis.
Main Methods:
- Evaluation of MMP-2 and MMP-9 activity in kidney cell cytoplasm and mitochondria.
- Analysis of acute renal pathology models: pyelonephritis, rhabdomyolysis, and ischemia/reperfusion.
- Assessment of MMP isoform characteristics, including molecular weight and proteolytic activity.
Main Results:
- Significant elevation of MMP-2 and MMP-9 levels in kidney cells during acute pyelonephritis.
- Detection of a lower molecular weight, active MMP-2 isoform within kidney cell mitochondria.
- A direct correlation was established between kidney MMP levels and pyelonephritis inflammation severity.
Conclusions:
- The presence of active MMP-2 in kidney cell mitochondria during pyelonephritis may significantly impact cellular function.
- These findings suggest MMPs play a critical role in the pathogenesis and cellular fate of acute kidney injuries.
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