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.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Am+J+Cancer+Res
2017 ; 7
(3
): 433-447
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Gpr110 deficiency decelerates carcinogen-induced hepatocarcinogenesis via
activation of the IL-6/STAT3 pathway
#MMPMID28401002
Ma B
; Zhu J
; Tan J
; Mao Y
; Tang L
; Shen C
; Zhang H
; Kuang Y
; Fei J
; Yang X
; Wang Z
Am J Cancer Res
2017[]; 7
(3
): 433-447
PMID28401002
show ga
Hepatocarcinogenesis is a complex process that includes pronounced
necroinflammation, unregulated hepatocyte damage, subsequent extensive fibrosis,
and carcinogenesis. GPR110 was an adhesion G protein-coupled receptor. Analysis
of the expression pattern of Gpr110 in mice displayed that Gpr110 was expressed
highly in liver, implicating the tissue compartments where Gpr110 could execute
its functions, the role of Gpr110 in the physiological and pathological state of
liver remains unclear. Based on a Gpr110 knockout mouse model, we evaluated the
role of Gpr110 in hepatocarcinogenesis by using a carbon tetrachloride
(CCl(4))-induced liver injury and fibrosis model, as well as diethylnitrosamine
(DEN) plus CCl(4)-induced liver cancer model. In this study, we found subdued
chronic liver injury, reduced compensatory proliferation, lower liver fibrosis,
but enhanced inflammation occurred in Gpr110(-/-) mice during CCl(4) challenge.
In addition, Gpr110(-/-) mice were resistant to liver tumorigenesis induced by
DEN plus CCl(4) injection. Molecular mechanisms underlying these differences
correlated with augmented activation of the IL-6/STAT3 pathway, which exerted
hepatoprotective effects during liver damage, fibrosis, and oncogenesis in
Gpr110(-/-) mice. Furthermore, pharmacological inhibition of the activation of
the IL-6/STAT3 pathway enhanced hepatic fibrosis and promoted DEN plus
CCl(4)-induced carcinogenesis in Gpr110(-/-) mice. In summary, absence of Gpr110
decelerates liver fibrosis/cirrhosis progressing into tumorigenesis, due to
strengthening activation of the IL-6/STAT3 pathway, leading to a weaker liver
injury and fibrosis microenvironment. It is indicated that targeting Gpr110 and
activating the IL-6/STAT3 pathway may be considered to be preventive methods for
some cirrhosis transition.