Clinical and Experimental Nephrology

, Volume 11, Issue 4, pp 269–274

Label-retaining cells in the kidney: origin of regenerating cells after renal ischemia



The kidney is capable of regeneration. In response to a variety of insults, renal epithelial tubular cells dedifferentiate into an immature phenotype, proliferate, migrate to the injured area, and redifferentiate into mature polarized epithelial cells. In animal models of acute kidney injury induced by renal ischemia or renal toxins, various growth factors, transcription factors, chemokines, and extracellular matrix components have been demonstrated to be involved in the regeneration process. Recent research has suggested the existence of renal stem/progenitor cells in the kidney and their involvement in renal regeneration. In this review, we will focus on the mechanisms of tubular regeneration after kidney injury, particularly on label-retaining cells actively engaged in this process, and discuss their potential as targets of regenerative therapy for various kidney diseases.

Key words

Label-retaining cell Tubular regeneration Renal stem cell Activin-follistatin system Kidney development 


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Copyright information

© Japanese Society of Nephrology 2007

Authors and Affiliations

  1. 1.Department of Medicine and Clinical ScienceGunma University Graduate School of MedicineMaebashiJapan

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