title: Human immunodeficiency virus type 1 vectors with alphavirus envelope glycoproteins produced from stable packaging cells.
abstract: Alphavirus glycoproteins have broad host ranges. Human immunodeficiency virus type 1 (HIV-1) vectors pseudotyped with their glycoproteins could extend the range of tissues that can be transduced in both humans and animal models. Here, we established stable producer cell lines for HIV vectors pseudotyped with alphavirus Ross River virus (RRV) and Semliki Forest virus (SFV) glycoproteins E2E1. RRV E2E1-stable clones could routinely produce high-titer pseudotyped vectors for at least 5 months. SFV E2E1-stable clones, however, produced relatively low titers. We examined the properties of RRV E2E1-pseudotyped vectors [HIV-1(RRV)] and compared them with amphotropic murine leukemia virus Env- and vesicular stomatitis virus glycoprotein G-pseudotyped vectors. HIV-1(RRV) displayed a number of characteristics which would be advantageous in ex vivo and in vivo experiments, including resistance to inactivation by heat-labile components in fresh human sera and thermostability at 37 degrees C. Upon single-step concentration by ultracentrifugation of HIV-1(RRV), we could achieve vector stocks with titers up to 6 x 10(7) IU/ml. HIV-1(RRV) efficiently transduced cells from several different species, including murine primary dendritic cells, but failed to transduce human and murine T cells as well as human hematopoietic stem cells (HSC). These results indicate that HIV-1(RRV) could be used in a number of applications including animal model experiments and suggest that expression of RRV cellular receptors is limited or absent in certain cell types such as T cells and human HSC.
authors.affiliation: Department of Immunology and Molecular Pathology, University College London, University of London, London, United Kingdom.
authors.forename: Blair L
authors.initials: BL
authors.lastname: Strang
authors.forename: Yasuhiro
authors.initials: Y
authors.lastname: Takeuchi
authors.forename: Thomas
authors.initials: T
authors.lastname: Relander
authors.forename: Johan
authors.initials: J
authors.lastname: Richter
authors.forename: Ranbir
authors.initials: R
authors.lastname: Bailey
authors.forename: David A
authors.initials: DA
authors.lastname: Sanders
authors.forename: Mary K L
authors.initials: MK
authors.lastname: Collins
authors.forename: Yasuhiro
authors.initials: Y
authors.lastname: Ikeda
mesh_terms: D000524:Alphavirus / Q000235:genetics* / Q000378:metabolism; D000818:Animals; D002460:Cell Line; D002478:Cells, Cultured; D003713:Dendritic Cells / Q000821:virology; D005822:Genetic Vectors; D006023:Glycoproteins / Q000235:genetics / Q000378:metabolism*; D015497:HIV-1 / Q000235:genetics* / Q000502:physiology; D006412:Hematopoietic Stem Cells / Q000821:virology; D006801:Humans; D051379:Mice; D012398:Ross River virus / Q000235:genetics / Q000378:metabolism; D012672:Semliki forest virus / Q000235:genetics / Q000378:metabolism; D013601:T-Lymphocytes / Q000821:virology; D014161:Transduction, Genetic; D014759:Viral Envelope Proteins / Q000235:genetics / Q000378:metabolism*; D019065:Virus Assembly
chemical_list: D006023:Glycoproteins; D014759:Viral Envelope Proteins