Cell cycle disorders in podocytes: an emerging and increasingly recognized phenomenon

Area of Science:

• Nephrology
• Cell Biology
• Molecular Medicine

Background:

• Proteinuria is a hallmark of kidney disease, often linked to glomerular filtration barrier damage.
• Podocytes, critical for filtration, are terminally differentiated but can re-enter the cell cycle under stress.
• Cell cycle dysregulation in podocytes leads to foot process effacement, detachment, and apoptosis, causing proteinuria.

Purpose of the Study:

• To review mechanisms of podocyte cell cycle disorders in renal diseases.
• To identify molecules that trigger podocyte cell cycle re-entry.
• To highlight potential drug targets for mitigating podocyte damage and disease progression.

Main Methods:

• Literature review of podocyte cell cycle disorders in kidney diseases.
• Consolidation of existing research on podocyte re-entry triggers.
• Analysis of molecular pathways involved in podocyte cell cycle regulation.

Main Results:

• Podocyte cell cycle re-entry results in structural defects and increased susceptibility to injury.
• Binucleated or multinucleated podocytes are formed due to failed cell division.
• Podocyte mitotic catastrophe and detachment contribute significantly to proteinuria.

Conclusions:

• Podocyte cell cycle disorders are implicated in various kidney diseases, including diabetic kidney disease and lupus nephritis.
• Identifying triggers of podocyte cell cycle re-entry provides novel therapeutic avenues.
• Targeting podocyte cell cycle regulation can alleviate injury, reduce proteinuria, and slow kidney disease progression.