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Yoshitada Tanabe Fumihito Tajima Yuki Nakamura Eriko Shibasaki Mai Wakejima Takashi Shimomura Rie Murai Yoshiyuki Murawaki Koichi Hashiguchi Takamasa Kanbe Toshiya Saeki Miho Ichiba Yoko Yoshida Masahiro Mitsunari Soichi Yoshida Jun-ichiro Miake Yasutaka Yamamoto Naoki Nagata Tasuku Harada Akihiro Kurimasa Ichiro Hisatome Naoki Terakawa Yoshikazu Murawaki Goshi Shiota 《Biochemical and biophysical research communications》2011,(4):769
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Analyses to clarify rich fractions in hepatic progenitor cells from human umbilical cord blood and cell fusion 总被引:6,自引:0,他引:6
Tanabe Y Tajima F Nakamura Y Shibasaki E Wakejima M Shimomura T Murai R Murawaki Y Hashiguchi K Kanbe T Saeki T Ichiba M Yoshida Y Mitsunari M Yoshida S Miake J Yamamoto Y Nagata N Harada T Kurimasa A Hisatome I Terakawa N Murawaki Y Shiota G 《Biochemical and biophysical research communications》2004,324(2):711-718
Umbilical cord blood (UCB) is a source of hematopoietic stem cells and other stem cells, and human UCB cells have been reported to contain transplantable hepatic progenitor cells. However, the fractions of UCB cells in which hepatic progenitor cells are rich remain to be clarified. In the present study, first, the fractionated cells by CD34, CD38, and c-kit were transplanted via portal vein of NOD/SCID mice, and albumin mRNA expression was examined in livers at 1 and 3 months posttransplantation. At 1 and 3 months, albumin mRNA expression in CD34+UCB cells-transplanted livers was higher than that in CD34- cells-transplanted livers. Albumin mRNA expression in CD34+CD38+ cells-transplanted livers was higher than that in CD34+CD38- cells-transplanted [corrected] liver at 1 month. However, it was much higher [corrected] in CD34+CD38- cell-transplanted livers at 3 months. Similar expression of albumin mRNA was obtained between CD34+CD38+c-kit+ cells- and CD34+CD38-c-kit- cells-transplanted livers, and between CD34+CD38-c-kit+ cells- and CD34+CD38-c-kit- cells-transplanted livers, respectively. Second, fluorescence in situ hybridization and immunohistochemistry were performed to examine whether UCB cells really transdifferentiated into hepatocytes or they only fused with mouse hepatocytes. In mouse liver sections, of 1.2% cells which had human chromosomes, 0.9% cells were due to cell fusion, whereas 0.3% cells were transdifferentiated into human hepatocytes. These results suggest that CD34+UCB cells are rich fractions in hepatic progenitor cells, and that transdifferentiation from UCB cells into hepatocytes as well as cell fusion simultaneously occur in this situation. 相似文献
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