Deprecated: Implicit conversion from float 209.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 209.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 209.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 209.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 209.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 209.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 243.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 243.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 243.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 243.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 243.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 243.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 243.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 276.79999999999995 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 276.79999999999995 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 276.79999999999995 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 276.79999999999995 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\23602832
.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Am+J+Pathol
2013 ; 182
(6
): 2310-21
Nephropedia Template TP
gab.com Text
Twit Text FOAVip
Twit Text #
English Wikipedia
Inflammatory cytokines associated with degenerative disc disease control
aggrecanase-1 (ADAMTS-4) expression in nucleus pulposus cells through MAPK and
NF-?B
#MMPMID23602832
Tian Y
; Yuan W
; Fujita N
; Wang J
; Wang H
; Shapiro IM
; Risbud MV
Am J Pathol
2013[Jun]; 182
(6
): 2310-21
PMID23602832
show ga
We investigated TNF-? and IL-1? regulation of ADAMTS-4 expression in nucleus
pulposus (NP) cells and its role in aggrecan degradation. Real-time quantitative
RT-PCR, Western blotting, and transient transfections with rat NP cells and
lentiviral silencing with human NP cells were performed to determine the roles of
MAPK and NF-?B in cytokine-mediated ADAMTS-4 expression and function. ADAMTS4
expression and promoter activity increased in NP cells after TNF-? and IL-1?
treatment. Treatment of cells with MAPK and NF-?B inhibitors abolished the
inductive effect of the cytokines on ADAMTS4 mRNA and protein expression.
Although ERK1, p38?, p38?2, and p38? were involved in induction, ERK2 and p38?
played no role in TNF-?-dependent promoter activity. The inductive effect of p65
on ADAMTS4 promoter was confirmed through gain and loss-of-function studies.
Cotransfection of p50 completely blocked p65-mediated induction. Lentiviral
transduction with shRNA plasmids shp65, shp52, shIKK-?, and shIKK-? significantly
decreased TNF-?-dependent increase in ADAMTS-4 and -5 levels and aggrecan
degradation. Silencing of either ADAMTS-4 or -5 resulted in reduction in
TNF-?-dependent aggrecan degradation in NP cells. By controlling activation of
MAPK and NF-?B signaling, TNF-? and IL-1? modulate expression of ADAMTS-4 in NP
cells. To our knowledge, this is the first study to show nonredundant
contribution of both ADAMTS-4 and ADAMTS-5 to aggrecan degradation in human NP
cells in vitro.