Targeting Heparanase Attenuates Podocyte Injury Induced by Puromycin Aminonucleoside

Area of Science:

• Nephrology
• Cell Biology
• Biochemistry

Background:

• Podocytes are specialized cells crucial for the glomerular filtration barrier.
• The glomerular basement membrane (GBM) is a key component of this barrier.
• Podocyte injury can lead to glomerular diseases.

Purpose of the Study:

• To investigate the protective effect of a heparanase inhibitor against puromycin aminonucleoside (PAN)-induced podocyte injury.
• To evaluate the impact of heparanase inhibition on podocyte cytoskeletal structure and monolayer permeability.

Main Methods:

• Cultured podocytes were treated with PAN to induce injury.
• Co-treatment with the heparanase inhibitor PI-88 was performed.
• Cytoskeletal architecture, focal adhesions, and stress fibers were analyzed.
• A BSA filtration assay assessed podocyte monolayer permeability.

Main Results:

• PAN treatment disrupted podocyte cytoskeletal architecture and intercellular junctions.
• PI-88 co-treatment prevented PAN-induced cytoskeletal abnormalities.
• PI-88 attenuated the increase in podocyte monolayer permeability caused by PAN.

Conclusions:

• Heparanase inhibition protects podocytes from PAN-induced injury.
• PI-88 demonstrates potential as a therapeutic strategy for glomerular diseases involving podocyte damage.