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Schenk, Laura K. ; Ousingsawat, Jiraporn ; Skryabin, Boris V. ; Schreiber, Rainer ; Pavenstädt, Hermann ; Kunzelmann, Karl

Regulation and Function of TMEM16F in Renal Podocytes

Schenk, Laura K., Ousingsawat, Jiraporn, Skryabin, Boris V. , Schreiber, Rainer, Pavenstädt, Hermann und Kunzelmann, Karl (2018) Regulation and Function of TMEM16F in Renal Podocytes. International Journal of Molecular Sciences 19, S. 1798.

Veröffentlichungsdatum dieses Volltextes: 29 Aug 2018 13:01
Artikel
DOI zum Zitieren dieses Dokuments: 10.5283/epub.37618


Zusammenfassung

The Ca2+-activated phospholipid scramblase and ion channel TMEM16F is expressed in podocytes of renal glomeruli. Podocytes are specialized cells that form interdigitating foot processes as an essential component of the glomerular filter. These cells, which participate in generation of the primary urine, are often affected during primary glomerular diseases, such as glomerulonephritis and ...

The Ca2+-activated phospholipid scramblase and ion channel TMEM16F is expressed in podocytes of renal glomeruli. Podocytes are specialized cells that form interdigitating foot processes as an essential component of the glomerular filter. These cells, which participate in generation of the primary urine, are often affected during primary glomerular diseases, such as glomerulonephritis and secondary hypertensive or diabetic nephropathy, which always leads to proteinuria. Because the function of podocytes is known to be controlled by intracellular Ca2+ signaling, it is important to know about the role of Ca2+-activated TMEM16F in these cells. To that end, we generated an inducible TMEM16F knockdown in the podocyte cell line AB8, and produced a conditional mouse model with knockout of TMEM16F in podocytes and renal epithelial cells of the nephron. We found that knockdown of TMEM16F did not produce proteinuria or any obvious phenotypic changes. Knockdown of TMEM16F affected cell death of tubular epithelial cells but not of glomerular podocytes when analyzed in TUNEL assays. Surprisingly, and in contrast to other cell types, TMEM16F did not control intracellular Ca2+ signaling and was not responsible for Ca2+-activated whole cell currents in podocytes. TMEM16F levels in podocytes were enhanced after inhibition of the endolysosomal pathway and after treatment with angiotensin II. Renal knockout of TMEM16F did not compromise renal morphology and serum electrolytes. Taken together, in contrast to other cell types, such as platelets, bone cells, and immune cells, TMEM16F shows little effect on basal properties of podocytes and does not appear to be essential for renal function.



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Details

DokumentenartArtikel
Titel eines Journals oder einer ZeitschriftInternational Journal of Molecular Sciences
Verlag:MDPI
Ort der Veröffentlichung:BASEL
Band:19
Seitenbereich:S. 1798
Datum2018
InstitutionenBiologie und Vorklinische Medizin > Institut für Physiologie > Prof. Dr. Karl Kunzelmann
Identifikationsnummer
WertTyp
10.3390/ijms19061798DOI
Stichwörter / KeywordsPHOSPHATIDYLSERINE EXPOSURE; CHLORIDE CHANNEL; CA2+ SIGNALS; CELL BIOLOGY; ANOCTAMIN 6; ACTIVATION; EXPRESSION; DEATH; MICE; TMEM16F; anoctamin 6; kidney; renal ion channels; chloride channel
Dewey-Dezimal-Klassifikation500 Naturwissenschaften und Mathematik > 570 Biowissenschaften, Biologie
StatusVeröffentlicht
BegutachtetJa, diese Version wurde begutachtet
An der Universität Regensburg entstandenJa
URN der UB Regensburgurn:nbn:de:bvb:355-epub-376186
Dokumenten-ID37618

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