10.1158/0008-5472.CAN-15-1293 http://scihub22266oqcxt.onion/10.1158/0008-5472.CAN-15-1293 C4873388!4873388
!26980767
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Cancer+Res
2016 ; 76
(9
): 2525-39
Nephropedia Template TP gab.com Text Twit Text FOAVip Twit Text # English Wikipedia
TGF? Signaling in the Pancreatic Tumor Microenvironment Promotes Fibrosis and
Immune Evasion to Facilitate Tumorigenesis
#MMPMID26980767
Principe DR
; DeCant B
; Mascariñas E
; Wayne EA
; Diaz AM
; Akagi N
; Hwang R
; Pasche B
; Dawson DW
; Fang D
; Bentrem DJ
; Munshi HG
; Jung B
; Grippo PJ
Cancer Res
2016[May]; 76
(9
): 2525-39
PMID26980767
show ga
In early pancreatic carcinogenesis, TGF? acts as a tumor suppressor due to its
growth-inhibitory effects in epithelial cells. However, in advanced disease, TGF?
appears to promote tumor progression. Therefore, to better understand the
contributions of TGF? signaling to pancreatic carcinogenesis, we generated mouse
models of pancreatic cancer with either epithelial or systemic TGFBR deficiency.
We found that epithelial suppression of TGF? signals facilitated pancreatic
tumorigenesis, whereas global loss of TGF? signaling protected against tumor
development via inhibition of tumor-associated fibrosis, stromal TGF?1
production, and the resultant restoration of antitumor immune function.
Similarly, TGFBR-deficient T cells resisted TGF?-induced inactivation ex vivo,
and adoptive transfer of TGFBR-deficient CD8(+) T cells led to enhanced
infiltration and granzyme B-mediated destruction of developing tumors. These
findings paralleled our observations in human patients, where TGF? expression
correlated with increased fibrosis and associated negatively with expression of
granzyme B. Collectively, our findings suggest that, despite opposing the
proliferation of some epithelial cells, TGF? may promote pancreatic cancer
development by affecting stromal and hematopoietic cell function. Therefore, the
use of TGFBR inhibition to target components of the tumor microenvironment
warrants consideration as a potential therapy for pancreatic cancer, particularly
in patients who have already lost tumor-suppressive TGF? signals in the
epithelium. Cancer Res; 76(9); 2525-39. ©2016 AACR.
Please enable JavaScript to view the comments powered by Disqus. |Adoptive Transfer
[MESH] |Animals
[MESH] |Blotting, Western
[MESH] |Carcinogenesis/*metabolism/pathology
[MESH] |Disease Models, Animal
[MESH] |Enzyme-Linked Immunosorbent Assay
[MESH] |Fibrosis/metabolism/pathology
[MESH] |Flow Cytometry
[MESH] |Humans
[MESH] |Immunohistochemistry
[MESH] |Mice
[MESH] |Mice, Mutant Strains
[MESH] |Pancreatic Neoplasms/*pathology
[MESH] |Signal Transduction/physiology
[MESH] |Transforming Growth Factor beta/*metabolism
[MESH] |Tumor Escape/*physiology
[MESH] DeepDyve Pubget Overpricing