Deprecated: Implicit conversion from float 229.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 229.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 229.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 229.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 229.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 229.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 229.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 263.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 263.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 263.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 263.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 263.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 263.2 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\25971798
.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Mol+Biol+Cell
2015 ; 26
(13
): 2475-90
Nephropedia Template TP
gab.com Text
Twit Text FOAVip
Twit Text #
English Wikipedia
Regulation of cell proliferation by ERK and signal-dependent nuclear
translocation of ERK is dependent on Tm5NM1-containing actin filaments
#MMPMID25971798
Schevzov G
; Kee AJ
; Wang B
; Sequeira VB
; Hook J
; Coombes JD
; Lucas CA
; Stehn JR
; Musgrove EA
; Cretu A
; Assoian R
; Fath T
; Hanoch T
; Seger R
; Pleines I
; Kile BT
; Hardeman EC
; Gunning PW
Mol Biol Cell
2015[Jul]; 26
(13
): 2475-90
PMID25971798
show ga
ERK-regulated cell proliferation requires multiple phosphorylation events
catalyzed first by MEK and then by casein kinase 2 (CK2), followed by interaction
with importin7 and subsequent nuclear translocation of pERK. We report that
genetic manipulation of a core component of the actin filaments of cancer cells,
the tropomyosin Tm5NM1, regulates the proliferation of normal cells both in vitro
and in vivo. Mouse embryo fibroblasts (MEFs) lacking Tm5NM1, which have reduced
proliferative capacity, are insensitive to inhibition of ERK by peptide and
small-molecule inhibitors, indicating that ERK is unable to regulate
proliferation of these knockout (KO) cells. Treatment of wild-type MEFs with a
CK2 inhibitor to block phosphorylation of the nuclear translocation signal in
pERK resulted in greatly decreased cell proliferation and a significant reduction
in the nuclear translocation of pERK. In contrast, Tm5NM1 KO MEFs, which show
reduced nuclear translocation of pERK, were unaffected by inhibition of CK2. This
suggested that it is nuclear translocation of CK2-phosphorylated pERK that
regulates cell proliferation and this capacity is absent in Tm5NM1 KO cells.
Proximity ligation assays confirmed a growth factor-stimulated interaction of
pERK with Tm5NM1 and that the interaction of pERK with importin7 is greatly
reduced in the Tm5NM1 KO cells.