PMID- 29690953 OWN - NLM STAT- MEDLINE DCOM- 20190529 LR - 20230928 IS - 1052-2166 (Print) IS - 1555-3884 (Electronic) IS - 1052-2166 (Linking) VI - 18 IP - 3 DP - 2018 Aug 22 TI - Stat3 Regulates Liver Progenitor Cell-Driven Liver Regeneration in Zebrafish. PG - 157-170 LID - 10.3727/105221618X15242506133273 [doi] AB - After liver injury, regeneration manifests as either (1) hepatocytes proliferating to restore the lost hepatocyte mass or (2) if hepatocyte proliferation is compromised, biliary epithelial cells (BECs) dedifferentiating into liver progenitor cells (LPCs), which subsequently differentiate into hepatocytes. Following pharmacogenetic ablation of hepatocytes in Tg(fabp10a:CFP-NTR) zebrafish, resulting in severe liver injury, signal transducer and activator of transcription 3 (Stat3) and its target gene and negative regulator, socs3a, were upregulated in regenerating livers. Using either Stat3 inhibitors, JSI-124 and S3I-201, or stat3 zebrafish mutants, we investigated the role of Stat3 in LPC-driven liver regeneration. Although Stat3 suppression reduced the size of regenerating livers, BEC dedifferentiation into LPCs was unaffected. However, regenerating livers displayed a delay in LPC-to-hepatocyte differentiation and a significant reduction in the number of BECs. While no difference in cell death was detected, Stat3 inhibition significantly reduced LPC proliferation. Notably, stat3 mutants phenocopied the effects of Stat3 chemical inhibitors, although the mutant phenotype was incompletely penetrant. Intriguingly, a subset of socs3a mutants also displayed a lower number of BECs in regenerating livers. We conclude that the Stat3/Socs3a pathway is necessary for the proper timing of LPC-to-hepatocyte differentiation and establishing the proper number of BECs during LPC-driven liver regeneration. FAU - Khaliq, Mehwish AU - Khaliq M AD - Department of Developmental Biology, McGowan Institute for Regenerative Medicine, Pittsburgh Liver Research Center, University of Pittsburgh, Pittsburgh, PA, USA. FAU - Ko, Sungjin AU - Ko S AD - Department of Developmental Biology, McGowan Institute for Regenerative Medicine, Pittsburgh Liver Research Center, University of Pittsburgh, Pittsburgh, PA, USA. FAU - Liu, Yinzi AU - Liu Y AD - Department of Developmental Biology, Washington University School of Medicine, St. Louis, MO, USA. FAU - Wang, Hualin AU - Wang H AD - China Zebrafish Resource Center, State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, P.R. China. FAU - Sun, Yonghua AU - Sun Y AD - China Zebrafish Resource Center, State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, P.R. China. FAU - Solnica-Krezel, Lila AU - Solnica-Krezel L AD - Department of Developmental Biology, Washington University School of Medicine, St. Louis, MO, USA. FAU - Shin, Donghun AU - Shin D AD - Department of Developmental Biology, McGowan Institute for Regenerative Medicine, Pittsburgh Liver Research Center, University of Pittsburgh, Pittsburgh, PA, USA. LA - eng GR - F31 DK105714/DK/NIDDK NIH HHS/United States GR - P01 HD084387/HD/NICHD NIH HHS/United States GR - R01 DK101426/DK/NIDDK NIH HHS/United States GR - R35 GM118179/GM/NIGMS NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't DEP - 20180424 PL - United States TA - Gene Expr JT - Gene expression JID - 9200651 RN - 0 (STAT3 Transcription Factor) RN - 0 (Suppressor of Cytokine Signaling 3 Protein) RN - 0 (Zebrafish Proteins) RN - 0 (socs3a protein, zebrafish) RN - 0 (stat3 protein, zebrafish) SB - IM MH - Animals MH - Cell Differentiation MH - Cells, Cultured MH - Hepatocytes/cytology/*metabolism MH - *Liver Regeneration MH - STAT3 Transcription Factor/antagonists & inhibitors/genetics/*metabolism MH - Stem Cells/cytology/metabolism MH - Suppressor of Cytokine Signaling 3 Protein/genetics/metabolism MH - Zebrafish MH - Zebrafish Proteins/antagonists & inhibitors/genetics/*metabolism PMC - PMC6190120 COIS- The authors declare no conflicts of interests. EDAT- 2018/04/25 06:00 MHDA- 2019/05/30 06:00 PMCR- 2018/08/22 CRDT- 2018/04/26 06:00 PHST- 2018/04/25 06:00 [pubmed] PHST- 2019/05/30 06:00 [medline] PHST- 2018/04/26 06:00 [entrez] PHST- 2018/08/22 00:00 [pmc-release] AID - GE386 [pii] AID - 10.3727/105221618X15242506133273 [doi] PST - ppublish SO - Gene Expr. 2018 Aug 22;18(3):157-170. doi: 10.3727/105221618X15242506133273. Epub 2018 Apr 24.