PMID- 25915586 OWN - NLM STAT- MEDLINE DCOM- 20150812 LR - 20220409 IS - 1558-8238 (Electronic) IS - 0021-9738 (Print) IS - 0021-9738 (Linking) VI - 125 IP - 6 DP - 2015 Jun TI - Lineage fate of ductular reactions in liver injury and carcinogenesis. PG - 2445-57 LID - 78585 [pii] LID - 10.1172/JCI78585 [doi] AB - Ductular reactions (DRs) are observed in virtually all forms of human liver disease; however, the histogenesis and function of DRs in liver injury are not entirely understood. It is widely believed that DRs contain bipotential liver progenitor cells (LPCs) that serve as an emergency cell pool to regenerate both cholangiocytes and hepatocytes and may eventually give rise to hepatocellular carcinoma (HCC). Here, we used a murine model that allows highly efficient and specific lineage labeling of the biliary compartment to analyze the histogenesis of DRs and their potential contribution to liver regeneration and carcinogenesis. In multiple experimental and genetic liver injury models, biliary cells were the predominant precursors of DRs but lacked substantial capacity to produce new hepatocytes, even when liver injuries were prolonged up to 12 months. Genetic modulation of NOTCH and/or WNT/beta-catenin signaling within lineage-tagged DRs impaired DR expansion but failed to redirect DRs from biliary differentiation toward the hepatocyte lineage. Further, lineage-labeled DRs did not produce tumors in genetic and chemical HCC mouse models. In summary, we found no evidence in our system to support mouse biliary-derived DRs as an LPC pool to replenish hepatocytes in a quantitatively relevant way in injury or evidence that DRs give rise to HCCs. FAU - Jors, Simone AU - Jors S FAU - Jeliazkova, Petia AU - Jeliazkova P FAU - Ringelhan, Marc AU - Ringelhan M FAU - Thalhammer, Julian AU - Thalhammer J FAU - Durl, Stephanie AU - Durl S FAU - Ferrer, Jorge AU - Ferrer J FAU - Sander, Maike AU - Sander M FAU - Heikenwalder, Mathias AU - Heikenwalder M FAU - Schmid, Roland M AU - Schmid RM FAU - Siveke, Jens T AU - Siveke JT FAU - Geisler, Fabian AU - Geisler F LA - eng GR - 101033/Wellcome Trust/United Kingdom GR - R01 DK078803/DK/NIDDK NIH HHS/United States GR - DK078803/DK/NIDDK NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't DEP - 20150427 PL - United States TA - J Clin Invest JT - The Journal of clinical investigation JID - 7802877 SB - IM MH - Animals MH - Bile Ducts/*metabolism/pathology MH - Carcinoma, Hepatocellular/chemically induced/genetics/*metabolism/pathology MH - Hepatocytes/metabolism/pathology MH - Humans MH - Liver/*injuries/*metabolism/pathology MH - Liver Neoplasms, Experimental/chemically induced/genetics/*metabolism/pathology MH - Male MH - Mice MH - Mice, Transgenic MH - Stem Cells/metabolism/pathology MH - Wnt Signaling Pathway/drug effects/genetics PMC - PMC4497753 EDAT- 2015/04/29 06:00 MHDA- 2015/08/13 06:00 PMCR- 2015/09/01 CRDT- 2015/04/28 06:00 PHST- 2014/08/17 00:00 [received] PHST- 2015/03/20 00:00 [accepted] PHST- 2015/04/28 06:00 [entrez] PHST- 2015/04/29 06:00 [pubmed] PHST- 2015/08/13 06:00 [medline] PHST- 2015/09/01 00:00 [pmc-release] AID - 78585 [pii] AID - 10.1172/JCI78585 [doi] PST - ppublish SO - J Clin Invest. 2015 Jun;125(6):2445-57. doi: 10.1172/JCI78585. Epub 2015 Apr 27.