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  • Title: [Expression of recombinant human stem cell factor in insect cells].
    Author: Zhang D, Qin J, Zang Y, Zhu J, Shen B.
    Journal: Wei Sheng Wu Xue Bao; 2000 Feb; 40(1):44-9. PubMed ID: 12548877.
    Abstract:
    The cDNA of human stem cell factor(hSCF) containing signal sequence was cloned into the transfer vector pVL941 of AcNPV to construct a recombinant transfer vector pVL941-SCF. Sf9 cells were cotransfected with wild type viral DNA and pVL914-SCF to produce the recombinant virus AcNPV-SCF by homologous recombination in cell. Southern-hybridization analysis suggested that the recombinant viral DNA contained hSCF cDNA fragment. The Sf9 cells infected with the recombinant baculovirus AcNPV-SCF expressed biologically active rhSCF which was secreted into the cell culture. The synergistic activities of SCF in conjunction with human interleukin-3(hIL-3) was measured by MTT colorimetric method and TF-1 cell line. The expression level of Sf9 cells reached its highest at about 1970 units/ml in the 3rd day after the infection with AcNPV-SCF. Three SCF bands with molecular masses of 18 x 10(3), 20 x 10(3) and 22 x 10(3) were detected by immunoblotting.
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