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2017 ; 97
(7
): 843-853
Nephropedia Template TP
gab.com Text
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English Wikipedia
The Hippo signaling functions through the Notch signaling to regulate
intrahepatic bile duct development in mammals
#MMPMID28581486
Wu N
; Nguyen Q
; Wan Y
; Zhou T
; Venter J
; Frampton GA
; DeMorrow S
; Pan D
; Meng F
; Glaser S
; Alpini G
; Bai H
Lab Invest
2017[Jul]; 97
(7
): 843-853
PMID28581486
show ga
The Hippo signaling pathway and the Notch signaling pathway are evolutionary
conserved signaling cascades that have important roles in embryonic development
of many organs. In murine liver, disruption of either pathway impairs
intrahepatic bile duct development. Recent studies suggested that the Notch
signaling receptor Notch2 is a direct transcriptional target of the Hippo
signaling pathway effector YAP, and the Notch signaling is a major mediator of
the Hippo signaling in maintaining biliary cell characteristics in adult mice.
However, it remains to be determined whether the Hippo signaling pathway
functions through the Notch signaling in intrahepatic bile duct development. We
found that loss of the Hippo signaling pathway tumor suppressor Nf2 resulted in
increased expression levels of the Notch signaling pathway receptor Notch2 in
cholangiocytes but not in hepatocytes. When knocking down Notch2 on the
background of Nf2 deficiency in mouse livers, the excessive bile duct development
induced by Nf2 deficiency was suppressed by heterozygous and homozygous deletion
of Notch2 in a dose-dependent manner. These results implicated that Notch
signaling is one of the downstream effectors of the Hippo signaling pathway in
regulating intrahepatic bile duct development.