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    • 3. 发明申请
    • COMPOSITIONS FOR THE IN VITRO DERIVATION AND CULTURE OF EMBRYONIC STEM (ES) CELL LINES WITH GERMLINE TRANSMISSION CAPABILITY AND FOR THE CULTURE OF ADULT STEM CELLS
    • 胚胎干细胞(ES)细胞系的组织衍生和培养具有胃肠道传播能力和成熟干细胞培养的组成
    • US20090098650A1
    • 2009-04-16
    • US12274939
    • 2008-11-20
    • Luc SCHOONJANS
    • Luc SCHOONJANS
    • C12N5/06C12N5/00
    • C12N5/0606A01K67/0275A01K2217/05A61K35/51A61K2035/124C07K14/5415C12N5/0634C12N5/0647C12N2501/10C12N2501/2306C12N2501/235C12N2501/33C12N2502/1323C12N2502/99
    • The present invention describes novel compositions for deriving, maintaining and growing pluripotent and germ-line competent mammalian embryonic stem cells. The compositions of this invention refer to compositions comprising a 1) conditioned medium of a cell line expressing limited amounts of Leukemia Inhibitory Factor (LIF), 2) conditioned medium from a cell line transfected with mammalian LIF and 3) a medium supplemented with recombinant rabbit LIF. The present invention describes novel compositions for deriving, maintaining and growing adult human stem cells and/or adult early progenitor cells, preferably under stroma-free conditions and without added LIF and/or cytokines or growth factors. The media of the present invention are used for the generation of pluripotent and germ-line competent embryonic stem cells of mammals of which these cells were not obtained up to now. The media of the present invention are used for the generation of adult human stem cells and/or adult early progenitor cells. The present invention is also directed to a novel rabbit LIF and to nucleotides encoding the rabbit LIF and methods for the expression of recombinant rabbit LIF in the Pichia pastoris expression system.
    • 本发明描述了用于衍生,维持和培养多潜能和生殖能力的哺乳动物胚胎干细胞的新型组合物。 本发明的组合物是指包含1)表达有限量的白血病抑制因子(LIF)的细胞系的条件培养基,2)来自用哺乳动物LIF转染的细胞系的条件培养基和3)补充有重组兔的培养基 LIF。 本发明描述了用于衍生,维持和培养成年人干细胞和/或成年早期祖细胞的新型组合物,优选在无基质条件下并且不加入LIF和/或细胞因子或生长因子。 本发明的培养基用于产生目前尚未获得这些细胞的哺乳动物的多潜能和胚胎干细胞的胚胎干细胞。 本发明的培养基用于产生成年人干细胞和/或成年早期祖细胞。 本发明还涉及新型兔LIF和编码兔LIF的核苷酸和在巴斯德毕赤酵母表达系统中表达重组兔LIF的方法。