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- W2096658049 abstract "Background— CD133 (AC133) is a surface antigen that defines a broad population of stem cells, including myogenic and endothelial progenitors. CD133 + cells are rare in adult tissues, and the factors that support their differentiation into mature angiomyogenic cells are not known. These hurdles have hampered the use of CD133 + cells for therapeutic purposes. Because human fetal liver is a rich source of CD133 + cells, we sought to identify the growth factors that promote codifferentiation of these cells into angiogenic and myogenic cells. Methods and Results— Human fetal liver CD133 + and CD133 − cell subpopulations were cultured with 5′-azacytidine or vascular endothelial growth factor (VEGF 165 ) and/or brain-derived nerve growth factor (BDNF). CD133 + but not CD133 − cells from human fetal liver codifferentiated into spindle-shaped cells, as well as flat adherent multinucleated cells capable of spontaneous contractions in culture. The resulting spindle-shaped cells were confirmed to be endothelial cells by immunohistochemistry analysis for von Willebrand factor and by acetylated LDL uptake. Multinucleated cells were characterized as striated muscles by electron microscopy and immunohistochemistry analysis for myosin heavy chain. Presence of VEGF 165 and BDNF significantly enhanced angiomyogenesis in vitro. Inoculation of cells derived from CD133 + cells, but not CD133 − cells, into the ear pinna of NOD/SCID mice resulted in the formation of cardiomyocytes, as identified by immunostaining with cardiac troponin-T antibody. These cells generated electrical action potentials, detectable by ECG tracing. Conclusions— CD133 defines a population of human fetal liver cells capable of differentiating into both angiogenic and myogenic cells. Preconditioning of these CD133 + cells with VEGF 165 and BDNF enhances the angiomyogenesis. CD133 + fetal liver cells ultimately may be used for therapeutic angiomyogenesis." @default.
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- W2096658049 date "2005-03-08" @default.
- W2096658049 modified "2023-09-26" @default.
- W2096658049 title "Cytokine Preconditioning Promotes Codifferentiation of Human Fetal Liver CD133 <sup>+</sup> Stem Cells Into Angiomyogenic Tissue" @default.
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- W2096658049 doi "https://doi.org/10.1161/01.cir.0000157155.44008.0f" @default.
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