title: Human immunodeficiency virus type 1-derived lentivirus vectors pseudotyped with envelope glycoproteins derived from Ross River virus and Semliki Forest virus.
abstract: Ross River virus (RRV) and Semliki Forest virus (SFV) are two alphaviruses that have a high degree of amino acid homology, as well as a very broad host range. We show here that envelope glycoproteins derived from both viruses can pseudotype human immunodeficiency virus type 1 (HIV-1)-derived lentivirus vectors. Both RRV and SFV glycoproteins considerably expand the host range of the lentivirus vector, and vectors can be efficiently concentrated by ultracentrifugation. A systematic analysis comparing the alphaviral glycoproteins to the vesicular stomatitis virus glycoprotein (VSV-G) revealed that lentivirus vectors incorporate RRV glycoproteins with an efficiency comparable to that of VSV-G. Both pseudotypes have comparable physical titers, but infectious titers with the RRV pseudotype are lower than with VSV-G. Incorporation of SFV glycoproteins into lentivirus vector is less efficient, leading to decreased physical and infectious titers. The transduction rates with VSV-G-, RRV-, and SFV-pseudotyped lentivirus vectors into adherent cell lines can be significantly increased by using a combination of Polybrene and plates coated with CH-296 recombinant fibronectin fragments. Together, our data suggest that RRV and SFV glycoproteins might be suitable as alternatives to VSV-G for pseudotyping lentivirus vectors.
authors.affiliation: Department of Medical and Molecular Genetics, Indiana University School of Medicine, Indianapolis, Indiana 46202, USA.
authors.forename: Christoph A
authors.initials: CA
authors.lastname: Kahl
authors.forename: Jon
authors.initials: J
authors.lastname: Marsh
authors.forename: Joanne
authors.initials: J
authors.lastname: Fyffe
authors.forename: David A
authors.initials: DA
authors.lastname: Sanders
authors.forename: Kenneth
authors.initials: K
authors.lastname: Cornetta
mesh_terms: D000818:Animals; D002460:Cell Line; D002522:Chlorocebus aethiops; D005822:Genetic Vectors; D015497:HIV-1 / Q000235:genetics*; D006367:HeLa Cells; D006801:Humans; D016086:Lentivirus / Q000235:genetics*; D008562:Membrane Glycoproteins / Q000235:genetics / Q000378:metabolism; D051379:Mice; D041681:NIH 3T3 Cells; D012398:Ross River virus / Q000235:genetics* / Q000378:metabolism; D012672:Semliki forest virus / Q000235:genetics* / Q000378:metabolism; D014161:Transduction, Genetic; D014709:Vero Cells; D014759:Viral Envelope Proteins / Q000235:genetics / Q000378:metabolism*
chemical_list: C028391:G protein, vesicular stomatitis virus; D008562:Membrane Glycoproteins; D014759:Viral Envelope Proteins