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  • Title: Cocal-pseudotyped lentiviral vectors resist inactivation by human serum and efficiently transduce primate hematopoietic repopulating cells.
    Author: Trobridge GD, Wu RA, Hansen M, Ironside C, Watts KL, Olsen P, Beard BC, Kiem HP.
    Journal: Mol Ther; 2010 Apr; 18(4):725-33. PubMed ID: 19997089.
    Abstract:
    Lentiviral vectors are established as efficient and convenient vehicles for gene transfer. They are almost always pseudotyped with the envelope glycoprotein of vesicular stomatitis virus (VSV-G) due to the high titers that can be achieved, their stability, and broad tropism. We generated a novel cocal vesiculovirus envelope glycoprotein plasmid and compared the properties of lentiviral vectors pseudotyped with cocal, VSV-G, and a modified feline endogenous retrovirus envelope glycoprotein (RD114/TR). Cocal-pseudotyped lentiviral vectors can be produced at titers as high as with VSV-G, have a broad tropism, and are stable, allowing for efficient concentration by centrifugation. Additionally, cocal vectors are more resistant to inactivation by human serum than VSV-G-pseudotyped vectors, and efficiently transduce human CD34(+) nonobese diabetic/severe combined immunodeficient (NOD/SCID) mouse-repopulating cells (SRCs), and long-term primate hematopoietic repopulating cells. These studies establish the potential of cocal-pseudotyped lentiviral vectors for a variety of scientific and therapeutic gene transfer applications, including in vivo gene delivery and hematopoietic stem cell (HSC) gene therapy.
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