Direkt zum Inhalt

Broeker, Katharina A. E. ; Fuchs, Michaela A. A. ; Schrankl, Julia ; Lehrmann, Claudia ; Schley, Gunnar ; Todorov, Vladimir T. ; Hugo, Christian ; Wagner, Charlotte ; Kurtz, Armin

Prolyl‐4‐hydroxylases 2 and 3 control erythropoietin production in renin‐expressing cells of mouse kidneys

Artikel

Broeker, Katharina A. E. , Fuchs, Michaela A. A., Schrankl, Julia, Lehrmann, Claudia, Schley, Gunnar, Todorov, Vladimir T., Hugo, Christian, Wagner, Charlotte und Kurtz, Armin (2021) Prolyl‐4‐hydroxylases 2 and 3 control erythropoietin production in renin‐expressing cells of mouse kidneys. The Journal of Physiology 60 (3), S. 671-694.

DOI zum Zitieren dieses Dokuments: 10.5283/epub.52132

Dies ist die aktuelle Version dieses Eintrags.


Zusammenfassung

Activation of the hypoxia-signalling pathway induced by deletion of the ubiquitin-ligase von Hippel–Lindau protein causes an endocrine shift of renin-producing cells to erythropoietin (EPO)-expressing cells. However, the underlying mechanisms have not yet been investigated. Since oxygen-regulated stability of hypoxia-inducible transcription factors relevant for EPO expression is dependent on the ...

Activation of the hypoxia-signalling pathway induced by deletion of the ubiquitin-ligase von Hippel–Lindau protein causes an endocrine shift of renin-producing cells to erythropoietin (EPO)-expressing cells. However, the underlying mechanisms have not yet been investigated. Since oxygen-regulated stability of hypoxia-inducible transcription factors relevant for EPO expression is dependent on the activity of prolyl-4-hydroxylases (PHD) 2 and 3, this study aimed to determine the relevance of different PHD isoforms for the EPO expression in renin-producing cells in vivo. For this purpose, mice with inducible renin cell-specific deletions of different PHD isoforms were analysed. Our study shows that there are two subgroups of renal renin-expressing cells, juxtaglomerular renin+ cells and platelet-derived growth factor receptor-β+ interstitial renin+ cells. These interstitial renin+ cells belong to the cell pool of native EPO-producing cells and are able to express EPO and renin in parallel. In contrast, co-deletion of PHD2 and PHD3, but not PHD2 deletion alone, induces EPO expression in juxtaglomerular and hyperplastic renin+ cells and downregulates renin expression. A strong basal PHD3 expression in juxtaglomerular renin+ cells seems to prevent the hypoxia-inducible transcription factor-2-dependent phenotype shift into EPO cells. In summary, PHDs seem important for the stabilization of the juxtaglomerular renin cell phenotype. Moreover, these findings reveal tubulointerstitial cells as a novel site of renal renin expression and suggest a high endocrine plasticity of these cells. Our data concerning the distinct expression patterns and functions of PHD2 and PHD3 provide new insights into the regulation of renin-producing cells and highlight the need for selective PHD inhibitors.



Beteiligte Einrichtungen


Details

DokumentenartArtikel
Titel eines Journals oder einer ZeitschriftThe Journal of Physiology
VerlagWiley
Open Access ArtDEAL (Wiley)
Band60
Nummer des Zeitschriftenheftes oder des Kapitels3
SeitenbereichS. 671-694
Datum4 Dezember 2021
Veröffentlichungsdatum07 Apr 2022 12:17
Zusätzliche Informationen (Öffentlich)the version with the ID 51349 was the "Early view", this is the "normal" version
InstitutionenBiologie und Vorklinische Medizin > Institut für Physiologie > Prof. Dr. Armin Kurtz
Identifikationsnummer
WertTyp
10.1113/JP282615DOI
Stichwörter / Keywordserythropoietin, hypoxia signalling, phenotype shift,prolyl 4-hydroxylases, renal interstitial cells, renin
Dewey-Dezimal-Klassifikation500 Naturwissenschaften und Mathematik > 570 Biowissenschaften, Biologie
StatusVeröffentlicht
BegutachtetJa, diese Version wurde begutachtet
An der Universität Regensburg entstandenZum Teil
URN der UB Regensburgurn:nbn:de:bvb:355-epub-521324
Dokumenten-ID52132

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