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PI3 kinase and TGF-β in glomerular nephropathy: what comes first?

Authors
Journal
Kidney International
0085-2538
Publisher
Elsevier
Publication Date
Volume
82
Issue
5
Identifiers
DOI: 10.1038/ki.2012.154
Keywords
  • Article
Disciplines
  • Biology
  • Medicine

Abstract

TGF-β and PI3K isoforms contribute to glomerular disease. In this issue of Kidney International, Finer and colleagues define a temporal and selective role for the p110γ catalytic isoform of PI3K, normally expressed by hematopoietic cells, and TGF-β in adriamycin-mediated glomerular injury. Early ectopic upregulation of p110γ by podocytes drives initial injury and proteinuria, while late upregulation of TGF-β drives fibrogenesis. Thus, proteinuria and renal fibrogenesis involve distinct signaling activated by p110γ and TGF-β, respectively.

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