Transplantation of human hepatocytes into tolerized genetically immunocompetent rats

作者: Edwin C Ouyang , Catherine H Wu , Cherie Walton , Kittichai Promrat , George Y Wu

DOI: 10.3748/WJG.V7.I3.324

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摘要: AIM: To determine whether normal genetically immunocompetent rodent hosts could be manipulated to accept human hepatocyte transplants with long term survival without immunosuppression. METHODS: Tolerance towards hepatocytes was established by injection of primary or Huh7 hepatoma cells into the peritoneal cavities fetal rats. Corresponding were subsequently transplanted newborn rats via intrasplenic within 24 h after birth. RESULTS: Mixed lymphocyte assays showed that spleen from non-tolerized stimulated proliferate when exposed hepatocytes, while tolerized not. Injections made between 15 d and 17 gestation produced optimal tolerizaton. Transplanted in rat livers visualized immunohistochemical staining albumin. By dot blotting genomic DNA 16 weeks transplantation, it found approximately 2.5 × 105 survived per liver. Human albumin mRNA detected RT-PCR for wk, protein also detectable serum. CONCLUSION: Tolerization an can permit functional hepatocytes.

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