Deprecated: Implicit conversion from float 233.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 233.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 233.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 233.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 233.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 233.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 233.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 233.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 233.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 267.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 267.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 267.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 267.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 267.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 267.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 267.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 267.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 267.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 300.79999999999995 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 300.79999999999995 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\28881723
.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Oncotarget
2017 ; 8
(32
): 52193-52210
Nephropedia Template TP
gab.com Text
Twit Text FOAVip
Twit Text #
English Wikipedia
Association of high microvessel ?(v)?(3) and low PTEN with poor outcome in stage
3 neuroblastoma: rationale for using first in class dual PI3K/BRD4 inhibitor,
SF1126
#MMPMID28881723
Erdreich-Epstein A
; Singh AR
; Joshi S
; Vega FM
; Guo P
; Xu J
; Groshen S
; Ye W
; Millard M
; Campan M
; Morales G
; Garlich JR
; Laird PW
; Seeger RC
; Shimada H
; Durden DL
Oncotarget
2017[Aug]; 8
(32
): 52193-52210
PMID28881723
show ga
Neuroblastoma (NB) is the most common extracranial solid tumor in children. Our
previous studies showed that the angiogenic integrin ?(v)?(3) was increased in
high-risk metastatic (stage 4) NB compared with localized neuroblastomas. Herein,
we show that integrin ?(v)?(3) was expressed on 68% of microvessels in
MYCN-amplified stage 3 neuroblastomas, but only on 34% (means) in
MYCN-non-amplified tumors (p < 0.001; n = 54). PTEN, a tumor suppressor involved
in ?(v)?(3) signaling, was expressed in neuroblastomas either diffusely, focally
or not at all (immunohistochemistry). Integrin ?(v)?(3) was expressed on 60% of
tumor microvessels when PTEN was negative or focal, as compared to 32% of
microvessels in tumors with diffuse PTEN expression (p < 0.001). In a MYCN
transgenic mouse model, loss of one allele of PTEN promoted tumor growth,
illustrating the potential role of PTEN in neuroblastoma pathogenesis.
Interestingly, we report the novel dual PI-3K/BRD4 activity of SF1126 (originally
developed as an RGD-conjugated pan PI3K inhibitor). SF1126 inhibits BRD4
bromodomain binding to acetylated lysine residues with histone H3 as well as PI3K
activity in the MYCN amplified neuroblastoma cell line IMR-32. Moreover, SF1126
suppressed MYCN expression and MYCN associated transcriptional activity in IMR-32
and CHLA136, resulting in overall decrease in neuroblastoma cell viability.
Finally, treatment of neuroblastoma tumors with SF1126 inhibited neuroblastoma
growth in vivo. These data suggest integrin ?(v)?(3), MYCN/BRD4 and PTEN/PI3K/AKT
signaling as biomarkers and hence therapeutic targets in neuroblastoma and
support testing of the RGD integrin ?(v)?(3)-targeted PI-3K/BRD4 inhibitor,
SF1126 as a therapeutic strategy in this specific subgroup of high risk
neuroblastoma.