Warning: file_get_contents(https://eutils.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&id=29912162
&cmd=llinks): Failed to open stream: HTTP request failed! HTTP/1.1 429 Too Many Requests
in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 215
Deprecated: Implicit conversion from float 213.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 213.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Warning: imagejpeg(C:\Inetpub\vhosts\kidney.de\httpdocs\phplern\29912162
.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Int+J+Mol+Sci
2018 ; 19
(6
): ä Nephropedia Template TP
gab.com Text
Twit Text FOAVip
Twit Text #
English Wikipedia
Regulation and Function of TMEM16F in Renal Podocytes
#MMPMID29912162
Schenk LK
; Ousingsawat J
; Skryabin BV
; Schreiber R
; Pavenstädt H
; Kunzelmann K
Int J Mol Sci
2018[Jun]; 19
(6
): ä PMID29912162
show ga
The Ca(2+)-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 Ca(2+) signaling, it is important to know about the role of
Ca(2+)-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 Ca(2+) signaling and was not responsible for Ca(2+)-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.
|Action Potentials
[MESH]
|Animals
[MESH]
|Anoctamins/*genetics/metabolism
[MESH]
|Apoptosis
[MESH]
|Calcium Signaling
[MESH]
|HEK293 Cells
[MESH]
|Humans
[MESH]
|Mice
[MESH]
|Phenotype
[MESH]
|Phospholipid Transfer Proteins/*genetics/metabolism
[MESH]