PMID- 24812054 OWN - NLM STAT- MEDLINE DCOM- 20140829 LR - 20171116 IS - 1522-1547 (Electronic) IS - 0193-1857 (Linking) VI - 307 IP - 1 DP - 2014 Jul 1 TI - Epiregulin promotes the emergence and proliferation of adult liver progenitor cells. PG - G50-7 LID - 10.1152/ajpgi.00434.2013 [doi] AB - We have previously reported that epiregulin is a growth factor that seems to act on liver progenitor cells (LPCs) during liver regeneration. However, the relationship between epiregulin and LPCs has remained unclear. The aim of the present study was to clarify the role of epiregulin during liver regeneration. The serum levels of epiregulin in patients with acute liver failure were examined. A liver injury model was developed using mice fed a diet containing 0.1% 3.5-diethoxycarbonyl-1.4-dihydrocollidine (DDC) to induce LPCs. We then evaluated the expression of epiregulin and LPCs in these mice. The proliferation of epithelial cell adhesion molecule + LPCs cultured with epiregulin was examined in vitro, and finally epiregulin was overexpressed in mouse liver. In patients with acute liver failure, serum epiregulin levels were elevated significantly. In DDC mice, LPCs emerged around the portal area. Epiregulin was also detected around the portal area during the course of DDC-induced liver injury and was partially coexpressed with Thy1. Serum epiregulin levels in DDC mice were also significantly elevated. Recombinant epiregulin augmented the proliferative capacity of the LPCs in a dose-dependent manner. In mice showing overexpression of epiregulin, the expression of PCNA on hepatocytes was increased significantly. Finally, LPCs emerged around the portal area after epiregulin gene delivery. We concluded that epiregulin promotes the proliferation of LPCs and DNA synthesis by hepatocytes and is upregulated in the serum of patients with liver injury. Furthermore, induction of epiregulin leads to the appearance of LPCs. Epiregulin would be a useful biomarker of liver regeneration. CI - Copyright (c) 2014 the American Physiological Society. FAU - Tomita, Kyoko AU - Tomita K AD - Department of Gastroenterology, Yamagata University Faculty of Medicine, Yamagata, Japan; CREST, Yamagata University Faculty of Medicine, Yamagata, Japan to.kyoko@med.id.yamagata-u.ac.jp. FAU - Haga, Hiroaki AU - Haga H AD - Department of Gastroenterology, Yamagata University Faculty of Medicine, Yamagata, Japan; FAU - Mizuno, Kei AU - Mizuno K AD - Department of Gastroenterology, Yamagata University Faculty of Medicine, Yamagata, Japan; CREST, Yamagata University Faculty of Medicine, Yamagata, Japan. FAU - Katsumi, Tomohiro AU - Katsumi T AD - Department of Gastroenterology, Yamagata University Faculty of Medicine, Yamagata, Japan; FAU - Sato, Chikako AU - Sato C AD - Department of Gastroenterology, Yamagata University Faculty of Medicine, Yamagata, Japan; CREST, Yamagata University Faculty of Medicine, Yamagata, Japan. FAU - Okumoto, Kazuo AU - Okumoto K AD - Department of Gastroenterology, Yamagata University Faculty of Medicine, Yamagata, Japan; FAU - Nishise, Yuko AU - Nishise Y AD - Department of Gastroenterology, Yamagata University Faculty of Medicine, Yamagata, Japan; FAU - Watanabe, Hisayoshi AU - Watanabe H AD - Department of Gastroenterology, Yamagata University Faculty of Medicine, Yamagata, Japan; CREST, Yamagata University Faculty of Medicine, Yamagata, Japan. FAU - Saito, Takafumi AU - Saito T AD - Department of Gastroenterology, Yamagata University Faculty of Medicine, Yamagata, Japan; FAU - Ueno, Yoshiyuki AU - Ueno Y AD - Department of Gastroenterology, Yamagata University Faculty of Medicine, Yamagata, Japan; CREST, Yamagata University Faculty of Medicine, Yamagata, Japan. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20140508 PL - United States TA - Am J Physiol Gastrointest Liver Physiol JT - American journal of physiology. Gastrointestinal and liver physiology JID - 100901227 RN - 0 (Antigens, Neoplasm) RN - 0 (Cell Adhesion Molecules) RN - 0 (EREG protein, human) RN - 0 (Epiregulin) RN - 0 (Epithelial Cell Adhesion Molecule) RN - 0 (Ereg protein, mouse) RN - 0 (Recombinant Proteins) RN - 0 (Thy-1 Antigens) RN - 62229-50-9 (Epidermal Growth Factor) SB - IM MH - Adult MH - Adult Stem Cells/drug effects/*metabolism/pathology MH - Animals MH - Antigens, Neoplasm/metabolism MH - Cell Adhesion Molecules/metabolism MH - Cell Line MH - *Cell Proliferation/drug effects MH - DNA Replication MH - Dose-Response Relationship, Drug MH - Epidermal Growth Factor/blood/genetics/*metabolism/pharmacology MH - Epiregulin MH - Epithelial Cell Adhesion Molecule MH - Female MH - Humans MH - Liver/drug effects/*metabolism/pathology MH - Liver Diseases/blood/genetics/*metabolism/pathology MH - *Liver Regeneration/drug effects MH - Male MH - Mice MH - Mice, Inbred C57BL MH - Middle Aged MH - Recombinant Proteins/pharmacology MH - Thy-1 Antigens/metabolism MH - Time Factors OTO - NOTNLM OT - Thy1 OT - epiregulin OT - epithelial cell adhesion molecule OT - liver injury OT - liver regeneration OT - progenitor cells EDAT- 2014/05/09 06:00 MHDA- 2014/08/30 06:00 CRDT- 2014/05/10 06:00 PHST- 2014/05/10 06:00 [entrez] PHST- 2014/05/09 06:00 [pubmed] PHST- 2014/08/30 06:00 [medline] AID - ajpgi.00434.2013 [pii] AID - 10.1152/ajpgi.00434.2013 [doi] PST - ppublish SO - Am J Physiol Gastrointest Liver Physiol. 2014 Jul 1;307(1):G50-7. doi: 10.1152/ajpgi.00434.2013. Epub 2014 May 8.