AI Article Synopsis

  • Focal segmental glomerulosclerosis (FSGS) is characterized by damage to podocytes, which are specialized kidney cells essential for filtering blood.
  • A specific protein kinase, ROCK2, was found to be activated in both FSGS mice and cultured podocytes exposed to adriamycin (ADR), a drug that induces FSGS.
  • Mice with a knockout of the ROCK2 gene in podocytes showed resistance to kidney damage, and using a ROCK2 inhibitor improved podocyte health and reduced kidney scarring, suggesting that targeting ROCK2 could be a promising treatment for FSGS.

Article Abstract

Focal segmental glomerulosclerosis (FSGS) shares podocyte damage as an essential pathological finding. Several mechanisms underlying podocyte injury have been proposed, but many important questions remain. Rho-associated, coiled-coil-containing protein kinase 2 (ROCK2) is a serine/threonine kinase responsible for a wide array of cellular functions. We found that ROCK2 is activated in podocytes of adriamycin (ADR)-induced FSGS mice and cultured podocytes stimulated with ADR. Conditional knockout mice in which the ROCK2 gene was selectively disrupted in podocytes (PR2KO) were resistant to albuminuria, glomerular sclerosis, and podocyte damage induced by ADR injection. In addition, pharmacological intervention for ROCK2 significantly ameliorated podocyte loss and kidney sclerosis in a murine model of FSGS by abrogating profibrotic factors. RNA sequencing of podocytes treated with a ROCK2 inhibitor proved that ROCK2 is a cyclic nucleotide signaling pathway regulator. Our study highlights the potential utility of ROCK2 inhibition as a therapeutic option for FSGS.

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10987559PMC
http://dx.doi.org/10.1038/s42003-024-06127-3DOI Listing

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