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Tsai, J.M.* ; Koh, P.W.* ; Stefanska, A. ; Xing, L.* ; Walmsley, G.G.* ; Poux, N.* ; Weissman, I.L.* ; Rinkevich, Y.

Localized hepatic lobular regeneration by central-vein-associated lineage-restricted progenitors.

Proc. Natl. Acad. Sci. U.S.A. 114, 3654-3659 (2017)
Publ. Version/Full Text Research data DOI PMC
Open Access Gold
The regeneration of organ morphology and function following tissue loss is critical to restore normal physiology, yet few cases are documented in mammalian postnatal life. Partial hepatectomy of the adult mammalian liver activates compensatory hepatocyte hypertrophy and cell division across remaining lobes, resulting in restitution of organ mass but with permanent alteration of architecture. Here, we identify a time window in early postnatal life wherein partial amputation culminates in a localized regeneration instead of global hypertrophy and proliferation. Quantifications of liver mass, enzymatic activity, and immunohistochemistry demonstrate that damaged lobes underwent multilineage regeneration, reforming a lobe often indistinguishable from undamaged ones. Clonal analysis during regeneration reveals local clonal expansions of hepatocyte stem/progenitors at injured sites that are lineage but not fate restricted. Tetrachimeric mice show clonal selection occurs during development with further selections following injury. Surviving progenitors associate mainly with central veins, in a pattern of selection different from that of normal development. These results illuminate a previously unknown program of liver regeneration after acute injury and allow for exploration of latent regenerative programs with potential applications to adult liver regeneration.
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Publication type Article: Journal article
Document type Scientific Article
Keywords Hepatocyte ; Lineage-restricted Progenitors ; Liver ; Regeneration ; Stem Cells
Language english
Publication Year 2017
HGF-reported in Year 2017
ISSN (print) / ISBN 0027-8424
e-ISSN 1091-6490
Quellenangaben Volume: 114, Issue: 14, Pages: 3654-3659 Article Number: , Supplement: ,
Publisher National Academy of Sciences
Reviewing status Peer reviewed
POF-Topic(s) 30202 - Environmental Health
Research field(s) Lung Research
PSP Element(s) G-554000-001
Scopus ID 85016976782
PubMed ID 28330992
Erfassungsdatum 2017-06-08