Cited by 857Hippo pathway signaling and YAP/TAZLiver physiology and pathologyCongenital heart defects research

Hippo Pathway Activity Influences Liver Cell Fate

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Yimlamai, Dean, Christodoulou, Constantina, Galli, Giorgio G., Yanger, Kilangsungla, Pepe-Mooney, Brian, Gurung, Basanta, Shrestha, Kriti, Cahan, Patrick +2 more·2014·Cell

Abstract

The Hippo-signaling pathway is an important regulator of cellular proliferation and organ size. However, little is known about the role of this cascade in the control of cell fate. Employing a combination of lineage tracing, clonal analysis, and organoid culture approaches, we demonstrate that Hippo pathway activity is essential for the maintenance of the differentiated hepatocyte state. Remarkably, acute inactivation of Hippo pathway signaling in vivo is sufficient to dedifferentiate, at very high efficiencies, adult hepatocytes into cells bearing progenitor characteristics. These hepatocyte-derived progenitor cells demonstrate self-renewal and engraftment capacity at the single-cell level. We also identify the NOTCH-signaling pathway as a functional important effector downstream of the Hippo transducer YAP. Our findings uncover a potent role for Hippo/YAP signaling in controlling liver cell fate and reveal an unprecedented level of phenotypic plasticity in mature hepatocytes, which has implications for the understanding and manipulation of liver regeneration.

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Crossref · 10.1016/j.cell.2014.03.060

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  • Following diverse injuries, often involving cholestasis, YAP signalling drives hepatocyte reprogramming via SOX9 induction.

    “Following diverse injuries, often involving cholestasis, YAP signalling also drives hepatocyte reprogramming via SOX9 induction.”

    From Distinct hepatocyte identities in liver homeostasis and regeneration (2023) · cites this paper as [59]

    The Results sections on YAP-driven reprogramming and NOTCH signaling show that activating YAP in hepatocytes induces a progenitor-like fate and upregulates Sox9. The paper does not establish that this YAP–SOX9 process occurs following diverse injuries, often involving cholestasis; its Discussion mentions cholestatic disorders as a context in which hepatocytes can express biliary markers. (LLM, conf=0.86)

    Experimental — accuracy not yet measured
  • Reprogrammed zone 1 hepatocytes exhibited reduced metabolic function, upregulated tissue stem cell markers and increased proliferative capacity, contributing to regeneration.

    “These reprogrammed zone 1 hepatocytes exhibited reduced metabolic function, upregulated tissue stem cell markers and increased proliferative capacity, contributing to regeneration.59,60,100,101”

    From Distinct hepatocyte identities in liver homeostasis and regeneration (2023) · cites this paper as [59]

    The Results sections on the liver progenitor cell program and single-hepatocyte de-differentiation report loss of hepatocyte-specific gene expression, acquisition of progenitor markers, and proliferation after YAP activation (page numbers unavailable). The paper does not identify the reprogrammed cells specifically as zone 1 hepatocytes or demonstrate reduced metabolic function. Its Discussion describes a possible role in liver repair, rather than showing that these cells contributed to regeneration. (LLM, conf=0.88)

    Experimental — accuracy not yet measured
  • Acute YAP overexpression results in hepatocyte reprogramming into BEC.

    “Acute YAP overexpression results in hepatocyte reprogramming into BEC10.”

    From HBO1 functions as an epigenetic barrier to hepatocyte plasticity and reprogramming during liver injury (2025) · cites this paper as [10]

    In Results, under “YAP activation de-differentiates single adult hepatocytes” (page unavailable), lineage tracing shows that YAP induction gives hepatocytes ductal markers and a ductal/progenitor-like fate. The paper does not establish that acute overexpression converts them into mature biliary epithelial cells: many cells at one week retained a hepatocyte marker, and the reported fate change progressed over weeks. (LLM, conf=0.85)

    Experimental — accuracy not yet measured
  • YAP is necessary and sufficient for hepatocyte reprogramming into ductal cells.

    “YAP, the main transducer of the Hippo pathway, has been reported to be necessary and sufficient for hepatocyte reprogramming into ductal cells10,11.”

    From HBO1 functions as an epigenetic barrier to hepatocyte plasticity and reprogramming during liver injury (2025) · cites this paper as [10]

    The Results section, “YAP activation de-differentiates single adult hepatocytes” (page unavailable), explicitly says high YAP levels are sufficient to impose a ductal/progenitor-like fate on adult hepatocytes. The passages found do not establish that YAP is necessary for hepatocyte-to-ductal reprogramming; the loss-of-function result in “NOTCH signaling downstream of YAP during reprogramming” concerns NOTCH signaling, not YAP. (LLM, conf=0.88)

    Experimental — accuracy not yet measured
  • Increased chromatin accessibility near YAP target genes suggests a pivotal role for YAP/TEAD signaling in the reprogramming process.

    “Furthermore, increased chromatin accessibility near YAP target genes suggested a pivotal role for YAP/TEAD signaling in the reprogramming process (Figure S1C), supporting previous data10.”

    From HBO1 functions as an epigenetic barrier to hepatocyte plasticity and reprogramming during liver injury (2025) · cites this paper as [10]

    The Results sections on the liver progenitor program and NOTCH signaling support a role for YAP/TEAD in hepatocyte reprogramming: they report YAP-driven fate changes and YAP/TEAD binding and regulation of NOTCH-pathway genes. The paper reports chromatin occupancy, not increased chromatin accessibility near YAP target genes, so it does not support the specific observation used in the citing sentence. (LLM, conf=0.85)

    Experimental — accuracy not yet measured

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Authors
Yimlamai, D., Christodoulou, C., Galli, G. G., Yanger, K., Pepe-Mooney, B., Gurung, B., Shrestha, K., Cahan, P., Stanger, B. Z., & Camargo, F. D.
Affiliations
  • Boston Children's Hospital (US)
  • University of Pennsylvania (US)
Corresponding author
Camargo, Fernando D.
Venue
Cell
Publisher
Elsevier BV
Published
2014-06
Volume
157
Issue
6
Pages
1324-1338
ISSN
0092-8674 (ISSN-L)
OpenAlex
W2028593002
Cited by
857
References
48
Citations by year
2026: 34 · 2025: 52 · 2024: 62 · 2023: 64 · 2022: 94 · 2021: 82 · 2020: 91 · 2019: 80 · 2018: 79 · 2017: 58 · 2016: 82 · 2015: 57 · 2014: 20
FWCI
36.04
Type
journal article
Language
en
Open access
Locations
  • Cell (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Institutes of Health (AR064036, DK083355, DK099559)
  • American-Italian Cancer Foundation
  • National Institute of Diabetes and Digestive and Kidney Diseases (5T32 DK007477-27)
  • National Science Foundation (DGE1144152)
  • U.S. Department of Defense (W81XWH-9)
  • Harvard Stem Cell Institute
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Hippo pathway signaling and YAP/TAZ
  • Health Sciences › Medicine › Hepatology › Liver physiology and pathology
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Congenital heart defects research
Keywords
Hippo signaling pathway, YAP, hepatocyte dedifferentiation, hepatic progenitor cells, Notch signaling, phenotypic plasticity, liver regeneration, hepatocyte differentiation
MeSH terms
Hippo Signaling Pathway, YAP-Signaling Proteins, Animals, Liver, Phosphoproteins, Stem Cells, Signal Transduction, Protein Serine-Threonine Kinases, Cell Cycle Proteins, Hepatocytes, Adaptor Proteins, Signal Transducing, Mice, Receptors, Notch, Cell Dedifferentiation

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