Cited by 1,022Liver physiology and pathologyOrgan Transplantation Techniques and OutcomesTissue Engineering and Regenerative Medicine

Liver regeneration

Fausto, Nelson·2000·Journal of Hepatology

Abstract

The liver can precisely regulate its growth and mass. Surgical resection of hepatic lobes or hepatocyte loss caused by viral or chemical injury triggers hepatocyte replication while enlarged liver mass is corrected by apoptosis. Hepatocytes have a great replicative capacity and are capable of repopulating the liver. However, "stem-like" cells proliferate when hepatocyte replication is blocked or delayed. Detailed studies of the mechanisms that regulate liver growth have been done in animals subjected to partial hepatectomy or chemical injury. Substantial progress has been achieved using appropriate transgenic and knockout mouse models for this work. Gene expression in the regenerating liver can be divided into several phases, starting with expression of a large number of immediate early genes. Hepatocytes need to be primed before they can fully respond to the growth factors HGF (Hepatocyte Growth Factor), TGFalpha (Transforming Growth Factor Alpha), and EGF (Epidermal Growth Factor) in vitro. Priming requires the cytokines TNF and IL-6 in addition to other agents that prevent cytotoxicity. Reactive Oxygen Species and glutathione content can determine whether the TNF effect on hepatocytes is proliferative or apoptotic. At least four transcription factors, NFkappaB, STAT3 (which are strongly induced by TNF), AP-1 and C/EBPbeta play major roles in the initiation of liver regeneration. In addition, extensive remodeling of the hepatic extracellular matrix occurs shortly after partial hepatectomy. Progression through the cell cycle beyond the initiation phase requires growth factors. The expression of Cyclin D1 probably establishes the stage at which replication becomes growth factor-independent and autonomous. Knowledge about the mechanisms of liver regeneration can now be applied to correct clinical problems caused by deficient liver growth.

Integrity signals

Registry

Crossref · 10.1016/s0168-8278(00)80412-2

Cites

79 of 79 references verified0 citation errors · 0 not checkable

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  • For regeneration to take place, normally quiescent hepatocytes must gain proliferative capacity and undergo a transition from G0 to G1, a process known as priming.

    “For regeneration to take place, normally quiescent hepatocytes must gain proliferative capacity and undergo a transition from G0 to G1, a process known as priming (1,6).”
  • Priming and progression of hepatocyte proliferation after PH requires the actions of TNF and IL-6 and growth factors such as TGF-alpha and HGF.

    “Priming and progression of hepatocyte proliferation after PH requires the actions of TNF and IL-6 and growth factors such as TGF-α and HGF (1,3,5,27).”
  • Experiments using hepatocyte lineage tracing in mice have shown that in various liver injury models hepatocytes regenerate themselves without any significant contribution from HPCs.

    “Experiments utilising hepatocyte lineage tracing in mice have shown in various liver injury models that hepatocytes regenerate themselves without any significant contribution from HPCs18, 19.”

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Authors
Fausto, N.
Affiliations
University of Washington (US)
Corresponding author
Fausto, Nelson
Venue
Journal of Hepatology
Publisher
Elsevier BV
Published
2000-01
Volume
32
Issue
1 Suppl
Pages
19-31
ISSN
0168-8278 (ISSN-L)
OpenAlex
W4237329722
Cited by
1,022
References
79
Citations by year
2026: 8 · 2025: 14 · 2024: 18 · 2023: 20 · 2022: 25 · 2021: 18 · 2020: 19 · 2019: 16 · 2018: 24 · 2017: 35 · 2016: 36 · 2015: 26 · 2014: 37 · 2013: 34 · 2012: 54
FWCI
9.34
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Hepatology (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Hepatology › Liver physiology and pathology
  • Health Sciences › Medicine › Surgery › Organ Transplantation Techniques and Outcomes
  • Health Sciences › Medicine › Surgery › Tissue Engineering and Regenerative Medicine
Keywords
liver regeneration, partial hepatectomy, hepatocyte proliferation, apoptosis, stem-like cells, hepatocyte growth factor, transforming growth factor-alpha, epidermal growth factor, TNF-α, interleukin-6, reactive oxygen species, glutathione, NF-κB, STAT3, AP-1, C/EBPβ, extracellular matrix remodeling, cyclin D1, cell cycle, transgenic mouse model, knockout mouse models
MeSH terms
Animals, Cell Cycle, Cell Division, Growth Substances, Humans, Liver, Liver Regeneration, Stem Cells, Transcription Factors, Genes, Immediate-Early

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