• Eur. J. Clin. Invest. · Mar 2015

    Review

    The role of hypoxia and Morg1 in renal injury.

    • Ivonne Loeffler and Gunter Wolf.
    • Department of Internal Medicine III, University Hospital Jena, Jena, Germany.
    • Eur. J. Clin. Invest. 2015 Mar 1; 45 (3): 294-302.

    BackgroundRenal hypoxia is known to play an important role in the pathophysiology of acute renal injury as well as in chronic kidney diseases. The mediators of hypoxia are the transcription factors HIF (hypoxia-inducible factors), that are highly regulated. Under normoxic conditions constitutively expressed HIF-α subunits are hydroxylated by prolyl hydroxylases (PHD1, PHD2, and PHD3) and subsequently degraded by proteasomes.Materials And MethodsThis narrative review is based on the material searched for and obtained via PubMed and MEDLINE up to January 2015.ResultsThe MAPK organizer 1 (Morg1) has been identified to act as a scaffold protein of PHD3 and suppression of Morg1 leads to the stabilization of HIF-α, which forms in the absence of oxygen a heterodimer with HIF-β, translocates to the nucleus and promotes the transcription of HIF target genes.ConclusionsThis review summarizes the current knowledge regarding the role of hypoxia, HIF signalling, and Morg1 in acute and chronic renal injury.© 2015 Stichting European Society for Clinical Investigation Journal Foundation.

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