Article Title: CD40L expressed from the canarypox vector, ALVAC, can boost immunogenicity of HIV-1 canarypox vaccine in mice and enhance the in-vitro expansion of viral specific CD8+ T cell memory responses from HIV-1-infected and HIV-1-uninfected individuals
Figure Lengend Snippet: Expression of murine CD40L by recombinant canarypox vector. Recombinant canarypox viruses vCPmCD40L and vCPmSP-D-CD40L were generated as described in Materials and Methods. (A) RT-PCR. CEF cells were infected by vCPmCD40L, vCPmSP-D-CD40L or its parental control ALVAC II at 5 MOI for 3 days. Total RNA was isolated from infected CEF cells using Trizol Reagent and subjected to RT-PCR with specific primers amplifying the coding sequence of murine CD40L or SP-D-CD40L. The identity of the amplified product was further verified by DNA sequencing (not shown). (B) Flow cytometry. Human PBMCs were infected by vCPmCD40L, vCPmSP-D-CD40L or ALVAC II at 5 MOI for 24 hrs and stained with PE-labeled anti-mouse CD40L mAb. (C) Western blot. Hela cells were infected by vCPmCD40L, vCPmSP-D-CD40L, or ALVAC II at 10 MOI for 24–48hrs. Cell lysates or magnetic beads incubated with supernatant of infected cells were subjected to Western blot and detected with a goat anti-mouse CD40L or anti-mouse SP-D antibody. As expected, the membrane CD40L was about 35–40kD and soluble multimeric form of CD40L was about 70kD.
Article Snippet: For flow cytometry, human peripheral blood mononuclear cells (PBMCs) were infected with recombinant viruses or ALVAC II at 5 MOI for 24 h and then stained with PE-conjugated anti-mouse or anti-human CD40L (BD Biosciences, Mississauga, ON, Canada).
Techniques: Expressing, Recombinant, Plasmid Preparation, Generated, Reverse Transcription Polymerase Chain Reaction, Infection, Isolation, Sequencing, Amplification, DNA Sequencing, Flow Cytometry, Cytometry, Staining, Labeling, Western Blot, Magnetic Beads, Incubation