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  • Title: Highly efficient gene transfer into cord blood nonobese diabetic/severe combined immunodeficiency repopulating cells by oncoretroviral vector particles pseudotyped with the feline endogenous retrovirus (RD114) envelope protein.
    Author: Kelly PF, Vandergriff J, Nathwani A, Nienhuis AW, Vanin EF.
    Journal: Blood; 2000 Aug 15; 96(4):1206-14. PubMed ID: 10942359.
    Abstract:
    Limited expression of the amphotropic envelope receptor is a recognized barrier to efficient oncoretroviral vector-mediated gene transfer. Human hematopoietic cell lines and cord blood-derived CD34(+) and CD34(+), CD38(-) cell populations and the progenitors contained therein were transduced far more efficiently with oncoretroviral particles pseudotyped with the envelope protein of feline endogenous virus (RD114) than with conventional amphotropic vector particles. Similarly, human repopulating cells from umbilical cord blood capable of establishing hematopoiesis in immunodeficient mice were efficiently transduced with RD114-pseudotyped particles, whereas amphotropic particles were ineffective at introducing the proviral genome. After only a single exposure of CD34(+) cord blood cells to RD114-pseudotyped particles, all engrafted nonobese diabetic/severe combined immunodeficiency mice (15 of 15) contained genetically modified human bone marrow cells. Human cells that were positive for enhanced green fluorescent protein represented as much as 90% of the graft. The use of RD114-pseudotyped vectors may be advantageous for therapeutic gene transfer into hematopoietic stem cells. (Blood. 2000;96:1206-1214)
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