PMID- 18158920 OWN - NLM STAT- MEDLINE DCOM- 20080307 LR - 20161124 IS - 1090-2104 (Electronic) IS - 0006-291X (Linking) VI - 367 IP - 1 DP - 2008 Feb 29 TI - Canonical Wnt signaling maintains the quiescent stage of hepatic stellate cells. PG - 116-23 AB - It is well known that hepatic stellate cells (HSC) develop into cells, which are thought to contribute to liver fibrogenesis. Recent data suggest that HSC are progenitor cells with the capacity to differentiate into cells of endothelial and hepatocyte lineages. The present study shows that beta-catenin-dependent canonical Wnt signaling is active in freshly isolated HSC of rats. Mimicking of the canonical Wnt pathway in cultured HSC by TWS119, an inhibitor of the glycogen synthase kinase 3beta, led to reduced beta-catenin phosphorylation, induced nuclear translocation of beta-catenin, elevated glutamine synthetase production, impeded synthesis of alpha-smooth muscle actin and Wnt5a, but promoted the expression of glial fibrillary acidic protein, Wnt10b, and paired-like homeodomain transcription factor 2c. In addition, canonical Wnt signaling lowered DNA synthesis and hindered HSC from entering the cell cycle. The findings demonstrate that beta-catenin-dependent Wnt signaling maintains the quiescent state of HSC and, similar to stem and progenitor cells, influences their developmental fate. FAU - Kordes, Claus AU - Kordes C AD - Clinic of Gastroenterology, Hepatology and Infectiology, Heinrich-Heine-University, Moorenstrasse 5, 40225 Dusseldorf, Germany. FAU - Sawitza, Iris AU - Sawitza I FAU - Haussinger, Dieter AU - Haussinger D LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20071226 PL - United States TA - Biochem Biophys Res Commun JT - Biochemical and biophysical research communications JID - 0372516 RN - 0 (Actins) RN - 0 (Enzyme Inhibitors) RN - 0 (Glial Fibrillary Acidic Protein) RN - 0 (Paired Box Transcription Factors) RN - 0 (Wnt Proteins) RN - 0 (beta Catenin) RN - EC 2.7.11.1 (Glycogen Synthase Kinase 3 beta) RN - EC 2.7.11.1 (Gsk3b protein, rat) RN - EC 2.7.11.26 (Glycogen Synthase Kinase 3) RN - EC 6.3.1.2 (Glutamate-Ammonia Ligase) SB - IM MH - Actins/metabolism MH - Animals MH - Enzyme Inhibitors/pharmacology MH - Gene Expression Regulation/genetics/physiology MH - Glial Fibrillary Acidic Protein/genetics/metabolism MH - Glutamate-Ammonia Ligase/metabolism MH - Glycogen Synthase Kinase 3/antagonists & inhibitors MH - Glycogen Synthase Kinase 3 beta MH - Hepatocytes/cytology/*metabolism/pathology MH - Immunohistochemistry MH - Liver Cirrhosis/*metabolism/pathology MH - Male MH - Paired Box Transcription Factors/genetics/metabolism MH - Phosphorylation MH - Rats MH - Rats, Wistar MH - Reverse Transcriptase Polymerase Chain Reaction MH - Signal Transduction/genetics/*physiology MH - Stem Cells/metabolism MH - Wnt Proteins/genetics/*metabolism MH - beta Catenin/genetics/*metabolism EDAT- 2007/12/27 09:00 MHDA- 2008/03/08 09:00 CRDT- 2007/12/27 09:00 PHST- 2007/12/10 00:00 [received] PHST- 2007/12/14 00:00 [accepted] PHST- 2007/12/27 09:00 [pubmed] PHST- 2008/03/08 09:00 [medline] PHST- 2007/12/27 09:00 [entrez] AID - S0006-291X(07)02746-5 [pii] AID - 10.1016/j.bbrc.2007.12.085 [doi] PST - ppublish SO - Biochem Biophys Res Commun. 2008 Feb 29;367(1):116-23. doi: 10.1016/j.bbrc.2007.12.085. Epub 2007 Dec 26.