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Engraftment and Albumin Production of Intrasplenically Transplanted Rat Hepatocytes (Sprague-Dawley), Freshly Isolated Versus Cryopreserved, Into Nagase Analbuminemic Rats (NAR)

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Banking of cryopreserved hepatocytes is a prerequisite for large-scale hepatocyte transplantation in the clinic. We compared the efficacy of intrasplenic transplantation into Nagase analbuminemic rats (NAR) of freshly isolated (FIH) and cryopreserved (CH) hepatocytes. Hepatocytes were cryopreserved using a controlled rate freezing protocol. Albumin production of thawed CH and FIH was measured in vitro in culture by ELISA and by Western blot. After in vivo intrasplenic transplantation of NAR with either FIH or CH we assessed 1) albumin in the serum of recipients by ELISA and by Western blotting analysis at different time intervals, and 2) hepatocyte engraftment by albumin immunohistochemical staining into spleens and livers at euthanasia. In vitro, albumin was produced up to day 4 of culture in both CH and FIH. In vivo, no intrasplenic engraftment of hepatocytes occurred. Intrahepatic engraftment of CH (cell number/mm2) was significantly (twofold) lower than that of FIH and appeared only as isolated cells and small (<10 cells) clusters, while bigger clusters (>10 cells) were observed with FIH. In the FIH group, serum albumin production was observed up to 32–49 days posttransplantation while in the CH group no serum albumin production was detected. Our results emphasize the need to improve 1) hepatocyte transplantation procedures either by repeated hepatocytes injections and/or by transplantation under a regeneration response, and 2) the freeze/thaw protocols of hepatocytes.

Keywords: Cryoprese; Key words: Freshly isolated hepatocytes

Document Type: Research Article


Affiliations: 1: *Laboratoire de Chirurgie Expérimentale, Fondation Transplantation, 5, avenue Molière, 67200 Strasbourg, France 2: †Centre de Chirurgie Viscérale et de Transplantation, Hôpital de Hautepierre, Avenue Molière, 67098 Strasbourg, France 3: ‡Service d'Anatomo-Pathologie, Hôpital de Hautepierre, Avenue Molière, 67098 Strasbourg, France 4: §Laboratoire de Biologie Cellulaire, Faculté de Pharmacie, 4, Place Saint Jacques, 25030 Besançon, France

Publication date: 2001-02-01

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  • Cell Transplantation publishes original, peer-reviewed research and review articles on the subject of cell transplantation and its application to human diseases. To ensure high-quality contributions from all areas of transplantation, separate section editors and editorial boards have been established. Articles deal with a wide range of topics including physiological, medical, preclinical, tissue engineering, and device-oriented aspects of transplantation of nervous system, endocrine, growth factor-secreting, bone marrow, epithelial, endothelial, and genetically engineered cells, among others. Basic clinical studies and immunological research papers are also featured. To provide complete coverage of this revolutionary field, Cell Transplantation will report on relevant technological advances, and ethical and regulatory considerations of cell transplants. Cell Transplantation is now an Open Access journal starting with volume 18 in 2009, and therefore there will be an inexpensive publication charge, which is dependent on the number of pages, in addition to the charge for color figures. This will allow work to be disseminated to a wider audience and also entitle the corresponding author to a free PDF, as well as prepublication of an unedited version of the manuscript.
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