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Title

Factors affecting hepatocyte isolation, engraftment, and replication in an in vivo model

Authors
Kawahara, Toshiyasu
Douglas, Donna N.
Nourbakhsh, Mahra
Lewis, Jamie T.
Tyrrell, David Lorne
Lund, Garry A.
Churchill, Thomas A.
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Published in Liver Transplantation. 2010, vol. 16, no. 8, p. 974-982
Abstract Human hepatocyte transplantation is an alternative treatment for acute liver failure and liver diseases involving enzyme deficiencies. Although it has been successfully applied in selected recipients, both isolation and transplantation outcomes have the potential to be improved by better donor selection. This study assessed the impact of various donor variables on isolation outcomes (yield and viability) and posttransplant engraftment, using the SCID/Alb-uPA (severe combined immunodeficient/urokinase type plasminogen activator under the control of an albumin promoter) human liver chimeric mouse model. Human hepatocytes were obtained from 90 human liver donor specimens and were transplanted into 3942 mice. Multivariate analysis revealed improved viability with younger donors (P = 0.038) as well as with shorter warm ischemic time (P = 0.012). Hepatocyte engraftment, assessed by the posttransplant level of serum human alpha1-antitrypsin, was improved with shorter warm ischemia time. Hepatocytes isolated from older donors ( ≥ 60 years) had lower viability and posttransplant engraftment (P ≤ 0.01). In conclusion, the selection of young donors (<60 years) and rapid liver specimen retrieval, allowing for shorter warm ischemia time, are key determinants for the success of both the isolation of high viability human hepatocytes and their subsequent posttransplantation capacity for engraftment and expansion.
Keywords Age FactorsAgedAlbumins/geneticsAnimalsDisease Models, AnimalHepatocytes/ cytology/ transplantationHumansIschemiaMiceMice, SCIDMiddle AgedMultivariate AnalysisPromoter Regions, GeneticRegenerationUrokinase-Type Plasminogen Activator/genetics
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PMID: 20677288
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Research group Transplantation et hépatologie (905)
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KAWAHARA, Toshiyasu et al. Factors affecting hepatocyte isolation, engraftment, and replication in an in vivo model. In: Liver Transplantation, 2010, vol. 16, n° 8, p. 974-982. https://archive-ouverte.unige.ch/unige:21038

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Deposited on : 2012-05-23

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