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
Warning: imagejpeg(C:\Inetpub\vhosts\kidney.de\httpdocs\phplern\26486078
.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Oncotarget
2015 ; 6
(41
): 43420-37
Nephropedia Template TP
gab.com Text
Twit Text FOAVip
Twit Text #
English Wikipedia
VHL-dependent alterations in the secretome of renal cell carcinoma: Association
with immune cell response?
#MMPMID26486078
Stehle F
; Leisz S
; Schulz K
; Schwurack N
; Weber N
; Massa C
; Kalich J
; Fahldieck C
; Seliger B
Oncotarget
2015[Dec]; 6
(41
): 43420-37
PMID26486078
show ga
Secreted proteins could modulate the interaction between tumor, stroma and immune
cells within the tumor microenvironment thereby mounting an immunosuppressive
tumor microenvironment. In order to determine the secretome-mediated, von Hippel
Lindau (VHL)-regulated cross-talk between tumor cells and T lymphocytes
peripheral blood mononuclear cells (PBMC) from healthy donors were either
cultured in conditioned media obtained from normoxic and hypoxic human
VHL-deficient renal cell carcinoma (RCC) cell line (786-0VHL-) and its wild type
(wt) VHL-transfected counterpart (786-0VHL+) or directly co-cultured with both
cell lines. An increased T cell proliferation was detected in the presence of
786-0VHL+-conditioned medium. By applying a quantitative proteomic-based approach
using differential gel electrophoresis followed by mass spectrometry fourteen
proteins were identified to be differentially expressed within the secretome of
786-0VHL- cells when compared to that of 786-0VHL+ cells. All proteins identified
were involved in multiple tumor-associated biological functions including immune
responses. Functional studies on manganese superoxide dismutase 2 (MnSOD2)
demonstrated that it was a regulator of T cell activation-induced oxidative
signaling and cell death. Direct effects of soluble MnSOD2 on the growth
properties and interleukin 2 (IL-2) secretion of T cells could be demonstrated
underlining the critical role of extracellular MnSOD2 levels for T cell
proliferation and activation.