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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

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.

Veröffentlichungsdatum dieses Volltextes: 07 Apr 2022 12:17
Artikel
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.



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Details

DokumentenartArtikel
Titel eines Journals oder einer ZeitschriftThe Journal of Physiology
Verlag:Wiley
Band:60
Nummer des Zeitschriftenheftes oder des Kapitels:3
Seitenbereich:S. 671-694
Datum4 Dezember 2021
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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