Liver stem cells
- PMID: 19002950
- PMCID: PMC3466695
- DOI: 10.1023/A:1024826823194
Liver stem cells
Abstract
The capacity of hepatocytes and cholangiocytes to contribute to their own maintenance has long been recognized. More recently, studies have indicated the presence of both intra-hepatic and extra-hepatic stem/progenitor cell populations. The intraorgan compartment probably derives primarily from the biliary tree, most particularly the most proximal branches, i.e. the canals of Hering and smallest ductules. The extra-organ compartment is at least in part derived from diverse populations of cells from the bone marrow. These three tiers of liver cell regeneration serve to maintain the normal organ and to regenerate damaged parenchyma in response to a variety of insults. The nature and extent of the insult determines the balance between these stem/progenitor compartments.
References
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- Beerheide W, Von Mach MA, Ringel M, Fleckenstein C, Schumann S, Renzing N, Hildebrandt A, Brenner W, Jensen O, Gebhard S, Reifenberg K, Bender J, Oesch F, Hengstler JG. Downregulation of beta2-microglobulin in human cord blood somatic stem cells after transplantation into livers of SCID-mice: An escape mechanism of stem cells? Biochem Biophys Res Commun. 2002;294:1052–1063. doi: 10.1016/S0006-291X(02)00596-X. - DOI - PubMed