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2015 ; 39 Suppl 1
(0 1
): S69-74
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Morphogen-related therapeutic targets for liver fibrosis
#MMPMID26206577
Fung E
; Tsukamoto H
Clin Res Hepatol Gastroenterol
2015[Sep]; 39 Suppl 1
(0 1
): S69-74
PMID26206577
show ga
Recent research on hepatic stellate cells (HSCs) has spotlighted the involvement
of morphogens in their cell fate determination in liver fibrosis. Temporally and
spatially expressed during embryonic development, morphogens are involved in
regulation of cell proliferation and differentiation, and tissue patterning. In
normal adult liver, morphogens are generally expressed at low levels. However, in
liver disease, myofibroblastic HSCs express morphogens such as Wnt, Shh, Necdin,
DLK1, and Notch as part of their participation in fibrogenesis and wound healing.
Liver regeneration involves cell proliferation and differentiation akin to
embryonic liver development where the cells appear to undergo similar fates, and
not surprisingly the morphogens are re-activated for the regenerative purpose in
adult liver injury. Evidence also points to crosstalk of these morphogens in
regulation of HSC fate determination. Genetic ablation or pharmacologic
inhibition of morphogens reverts activated HSC to quiescent cells in culture and
attenuates progression of hepatic fibrosis. However, positive regulation of liver
regeneration by the morphogens needs to be spared. Therapeutically, manipulation
of morphogen activities in a cell type and phase-specific manner should offer new
modalities for chronic liver disease.
|Calcium-Binding Proteins
[MESH]
|Cell Transdifferentiation/physiology
[MESH]
|Hedgehog Proteins/physiology
[MESH]
|Hepatic Stellate Cells/physiology
[MESH]
|Humans
[MESH]
|Intercellular Signaling Peptides and Proteins/physiology
[MESH]