title: High-efficiency lentiviral vector-mediated gene transfer into murine macrophages and activated splenic B lymphocytes.
abstract: The goal of the present report was to determine if lentiviral vectors could mediate gene transfer into murine terminally differentiated macrophages and mature B lymphocytes as a new strategy of gene delivery into professional antigen-presenting cells (APC). We demonstrated that nondividing tissue resident macrophages were efficiently transduced in vitro by lentiviral vectors. Gene transfer efficiencies of up to 90% were demonstrated using a green fluorescent protein (GFP) reporter gene-containing vector and expression was stable for the length of cell culture. Transduced macrophages were functionally competent, preserving their phagocytic activity, accessory cell function, interleukin (IL)-12 secretion, and nitric oxide (NO) production similar to control untransduced macrophages. Lentiviral vector mediated transduction of CD19(+) B cell blasts was demonstrated to be in the range of 60%-70% GFP-positive cells. These transduced cells retain the ability to upregulate CD80 and CD86 similar to control B cell cultures. In addition, we show that the human immunodeficiency virus type 1 (HIV-1) accessory proteins Nef, Vpr, Vif, and Vpu are not required for the transduction of both resident macrophages and activated B lymphoblasts. We conclude that HIV-1-based lentiviral vectors can mediate efficient gene transfer into primary murine macrophages and mature B lymphocytes.
authors.affiliation: National Cancer Institute, Building 10, Room 2B04, National Institutes of Health, 10 Center Drive, MSC 1502, Bethesda, MD 20892, USA.
authors.forename: Gabriela R
authors.initials: GR
authors.lastname: Rossi
authors.forename: Mario R
authors.initials: MR
authors.lastname: Mautino
authors.forename: Richard A
authors.initials: RA
authors.lastname: Morgan
mesh_terms: D000818:Animals; D000938:Antigen-Presenting Cells / Q000276:immunology; D001402:B-Lymphocytes / Q000276:immunology*; D018929:Cell Culture Techniques; D002460:Cell Line; D005822:Genetic Vectors; D049452:Green Fluorescent Proteins; D015497:HIV-1 / Q000235:genetics*; D018664:Interleukin-12 / Q000096:biosynthesis; D016086:Lentivirus / Q000235:genetics*; D008164:Luminescent Proteins / Q000235:genetics; D008213:Lymphocyte Activation; D008264:Macrophages / Q000276:immunology*; D051379:Mice; D008810:Mice, Inbred C57BL; D009569:Nitric Oxide / Q000096:biosynthesis; D010587:Phagocytosis; D013154:Spleen / Q000276:immunology; D014161:Transduction, Genetic
chemical_list: D008164:Luminescent Proteins; D049452:Green Fluorescent Proteins; D018664:Interleukin-12; D009569:Nitric Oxide