Podocyte Biology and Actin Dynamics in Kidney Disease
Summary
Podocytes are highly specialised epithelial cells that envelop glomerular capillaries and maintain the filtration barrier of the kidney. Their characteristic foot processes are supported by a dynamic actin cytoskeleton that enables both structural stability and adaptive responses to mechanical stress. Disruption of actin filament organisation within podocytes leads to foot process effacement, loss of slit diaphragm integrity and the onset of proteinuria. Key regulatory networks involving Rho-family GTPases, mechanotransductive pathways and adhesion complexes coordinate actin polymerisation, branching and stabilisation in health and disease. Dysregulation of these pathways underlies the progression of glomerular diseases such as focal segmental glomerulosclerosis and diabetic nephropathy. Understanding the interplay between cytoskeletal regulators and extracellular cues has driven the development of novel therapeutic strategies, ranging from targeted small molecules to nanomedicine approaches, with the aim of preserving podocyte architecture and preventing chronic kidney disease on a global scale.
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Podocyte Biology and Actin Dynamics in Kidney Disease publication trend
The graph below shows the total number of articles in podocyte biology and actin dynamics in kidney disease across all publications each year (not limited to Nature Index journals).
Technical terms
Podocyte: Highly specialised epithelial cell that forms part of the glomerular filtration barrier.
Actin cytoskeleton: Dynamic network of filamentous proteins that maintains cell shape and mediates movement.
Foot process effacement: Flattening or retraction of podocyte foot processes, leading to barrier dysfunction and proteinuria.
Slit diaphragm: Specialized cell junction between podocyte foot processes that restricts protein passage.
Rho-family GTPases: Molecular switches that regulate actin polymerisation and cytoskeletal dynamics.
Focal adhesion: Complex of proteins that links the cytoskeleton to the extracellular matrix and transduces mechanical signals.
References
- Engineering antioxidant ceria-zirconia nanomedicines for alleviating podocyte injury in rats with adriamycin-induced nephrotic syndrome. Journal of Nanobiotechnology (2023).
- A YAP/TAZ–ARHGAP29–RhoA Signaling Axis Regulates Podocyte Protrusions and Integrin Adhesions. Cells (2023).
- Regulation of the Actin Cytoskeleton in Podocytes. Cells (2020).
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