Embryonic ductal plate cells give rise to cholangiocytes, periportal hepatocytes, and adult liver progenitor cells.
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...Indeed, extensive lineage tracing approaches indicate that the contribution of progenitor cells to the normal homeostasis is negligible, at least in mouse models (Carpentier et al., 2011; Schaub et al., 2014; Tarlow et al., 2014; Yanger et al., 2014)....
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...and tubule formation, suggesting that HybHP and BD may originate from a common embryonic progenitor located at the ductal plate (Carpentier et al., 2011)....
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...See also Figure S7. and tubule formation, suggesting that HybHP and BD may originate from a common embryonic progenitor located at the ductal plate (Carpentier et al., 2011)....
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...…estimated efficiency of 51.4% (Figure 1F; 4,968 YFP+ hepatocytes out of 217,975 hepatocytes, n = 3), mirroring what was observed with the Sox9-GFP transgene (Figures 1A–1C) and inconsistent with the SOX9 expression pattern of wild-type (WT) mice given high tamoxifen doses (Carpentier et al., 2011)....
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...4% (Figure 1F; 4,968 YFP hepatocytes out of 217,975 hepatocytes, n = 3), mirroring what was observed with the Sox9-GFP transgene (Figures 1A–1C) and inconsistent with the SOX9 expression pattern of wild-type (WT) mice given high tamoxifen doses (Carpentier et al., 2011)....
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...A choline-deficient diet (MP Biomedicals) supplemented with 0.15% ethionine drinking water (Sigma-Aldrich, E5139) was administered for 2 weeks as described elsewhere (Carpentier et al., 2011), followed by 2 weeks of recovery....
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...Indeed, when we tested the specificity of the same Sox9-CreER strain used by Furuyama and colleagues (Soeda et al., 2010) with a R26YFP reporter, we found that this strain confers substantial hepatocyte labeling (Figure S4)....
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...As a ‘‘terminal’’ biliary marker, Krt19 appears to be an exception to this specificity problem; in contrast to Sox9 and OPN, Krt19 is not expressed by hepatocytes on injury, and hepatocytes become Krt19+ only after prolonged toxin exposure as part of a hepatocyte-to-BEC reprogramming process (Yanger et al., 2013)....
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...Considering that Krt19 staining overlaps completely with staining for these BEC markers (353/353 Sox9+ cells, n = 3; 352/ 352 OPN+ cells, n = 3; and 349/349 HNF1b+ cells, n = 2), these results suggest that tamoxifen treatment of Krt19-CreER/ R26YFP mice results in specific labeling of BECs, including the putative progenitor cells that reside within the Canals of Hering....
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...This analysis showed that colabeling occurred with a similar efficiency to that observed with Krt19, as 39.5% of Sox9+ cells (n = 3), 31.6% of osteopontin+ (Opn+) cells (n = 3), and 40.8% of HNF1b+ cells (n = 3) were labeled (Figure 1C)....
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