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Updated: Jul 23, 2025
Phenotypic Characterization of Macrophages from Rat Kidney by Flow Cytometry
Published on: October 18, 2016
Macrophage Function Modulated by tPA Signaling in Mouse Experimental Kidney Disease Models
1Division of Nephrology, Department of Medicine, Penn State University College of Medicine, Hershey, PA 17033, USA.
Abstract:
Macrophage infiltration and accumulation is a hallmark of chronic kidney disease. Tissue plasminogen activator (tPA) is a serine protease regulating the homeostasis of blood coagulation, fibrinolysis, and matrix degradation, and has been shown to act as a cytokine to trigger various receptor-mediated intracellular signal pathways, modulating macrophage function in response to kidney injury. In this review, we discuss the current understanding of tPA-modulated macrophage function and underlying signaling mechanisms during kidney fibrosis and inflammation.
Insights
Tissue plasminogen activator (tPA) influences macrophage behavior in chronic kidney disease. This review explores how tPA signaling impacts kidney inflammation and fibrosis.
Area of Science:
- Nephrology
- Immunology
- Biochemistry
Background:
- Macrophage infiltration is central to chronic kidney disease (CKD) pathogenesis.
- Tissue plasminogen activator (tPA) is a serine protease involved in coagulation, fibrinolysis, and matrix degradation.
- tPA also functions as a cytokine, modulating cellular signaling pathways.
Purpose of the Study:
- To review the current understanding of tPA's role in modulating macrophage function.
- To explore the signaling mechanisms underlying tPA's effects on macrophages in kidney injury.
- To connect tPA-modulated macrophage function to kidney fibrosis and inflammation.
Main Methods:
- Literature review of studies on tPA, macrophages, and kidney disease.
- Analysis of signaling pathways involved in tPA-macrophage interactions.
- Synthesis of findings related to kidney fibrosis and inflammation.
Main Results:
- tPA significantly influences macrophage recruitment, activation, and polarization in the kidney.
- tPA activates specific intracellular signaling cascades (e.g., MAPK, NF-κB) in macrophages.
- These tPA-driven macrophage responses contribute to the progression of kidney fibrosis and inflammation.
Conclusions:
- tPA plays a critical role in orchestrating macrophage responses during kidney injury.
- Targeting tPA-mediated signaling pathways presents a potential therapeutic strategy for CKD.
- Further research is needed to fully elucidate tPA's complex role in kidney disease.
