title: Stable marker gene transfer into human bone marrow stromal cells and their progenitors using novel herpesvirus saimiri-based vectors.
abstract: We have evaluated the ability of new herpesvirus saimiri (HVS)-based vectors to deliver a marker gene green fluorescent protein (GFP) into human bone marrow (BM) stromal cells and their progenitors. Stromal cells expanded from adherent layers of long-term BM cultures (LTC) were susceptible to HVS-based infection in a dose-dependent manner, and the efficiency of 94.8 +/- 2.0% was achieved using single exposure with HVS/EGFP vector at multiplicity of infection (moi) of approximately 50. Colony-forming unit-fibroblast (CFU-F) assay established the ability of HVS-based vectors to infect progenitors for bone marrow stroma fibroblasts and transfer the marker gene over multiple cell divisions in the absence of selective pressure. HVS was not toxic for stromal cells and progenitors and no viral replication was detected upon growth of modified stroma. On the basis these data, we believe that HVS-based constructs can offer a new opportunity for selective gene delivery into bone marrow stromal cells and progenitors. The ability of HVS to infect nondividing cells can be considered advantageous in the development of both ex vivo and in vivo strategies.
authors.affiliation: Molecular Medicine Unit, University of Leeds, UK. msjej@stjames.leeds.ac.uk
authors.forename: E A
authors.initials: EA
authors.lastname: Frolova-Jones
authors.forename: A
authors.initials: A
authors.lastname: Ensser
authors.forename: A J
authors.initials: AJ
authors.lastname: Stevenson
authors.forename: S E
authors.initials: SE
authors.lastname: Kinsey
authors.forename: D M
authors.initials: DM
authors.lastname: Meredith
mesh_terms: D001854:Bone Marrow Cells; D018929:Cell Culture Techniques; D002455:Cell Division; D003114:Colony-Forming Units Assay; D005347:Fibroblasts / Q000166:cytology; D005434:Flow Cytometry; D018014:Gene Transfer Techniques / Q000592:standards*; D005822:Genetic Vectors; D049452:Green Fluorescent Proteins; D006567:Herpesvirus 2, Saimiriine / Q000235:genetics*; D006801:Humans; D007202:Indicators and Reagents; D008164:Luminescent Proteins / Q000235:genetics* / Q000378:metabolism; D013234:Stem Cells; D017154:Stromal Cells / Q000166:cytology / Q000378:metabolism*
chemical_list: D007202:Indicators and Reagents; D008164:Luminescent Proteins; D049452:Green Fluorescent Proteins