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• W2034925048 abstract "Background: Hepatocyte transplantation has been shown to be effective in the treatment of liver failure; however, the shortage of donor organs limits its clinical application. Several reports have suggested that conditionally immortalized hepatocytes (CIH) could be an alternative to primary hepatocytes. However, CIH are known to undergo apoptosis in vitro at a non-permissive temperature, which is similar to body temperature. Methods: To investigate the duration of survival and in vivo apoptosis of CIH in the syngeneic host, the L2A2 cells (a kind of CIH) that were established from hepatocytes of a Lewis rat with a gene for a temperature-sensitive Simian Virus 40 (SV40) large T antigen were transplanted into the spleen. Cells were isolated from the spleen that was removed periodically up to 6 months, and used to detect the presence of the L2A2 cells among them with the selective culture for CIH and T-antigen PCR. In situ apoptosis of L2A2 cells was also examined. In order to improve the survival of transplanted L2A2 cells in the host, a group of rats were partially hepatectomized 1 day before transplantation was performed. Results: The L2A2 cells secreted albumin at a rate of 1.17 ± 0.18 μg/24 h per 106 cells in vitro. After transplantation, L2A2 cell colonies and PCR amplification bands appeared up to 14 and 7 days, respectively, but this duration was not prolonged by a partial hepatectomy. The spleen showed a large number of hepatocytes that were in the process of dying on the 5th day, and only a number of ghost hepatocytes were present on the 7th day of transplantation. No tumors were found during the 6-month observation period. Conclusions: Conditionally immortalized hepatocytes can survive in the spleen for a limited period, in spite of the growth stimulation, most likely because they undergo apoptosis in vivo as well as in vitro at a non-permissive temperature. These data suggest that the use of these cells in hepatocyte transplantation be limited to temporary hepatic support." @default.
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• W2034925048 date "2001-01-01" @default.
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• W2034925048 title "Survival of conditionally immortalized hepatocytes in the spleen of syngeneic rats" @default.
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• W2034925048 doi "https://doi.org/10.1046/j.1440-1746.2001.02393.x" @default.
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