NZW rabbits (n = 6/group) were immunized by two 0.5 ml injections into the right quadricep muscles find protocol with 1 × 1010 particle units of antigen expressing adenovirus vector using a 26G needle. For T cell studies, spleen cells from immunized or control mice

were harvested for use in IFN-γ ELIspot assays (n = 6 mice/group, assayed in pools) or intracellular cytokine staining assays (n = 6 mice/group, assayed individually) at 2 or 6 weeks after the final immunization. For antibody studies, sera from immunized or control mice (n = 6 mice/group, assayed individually) were collected 2 or 6 weeks after each immunization. A549 cells in a 12-well plate were infected at 70% confluence with various adenovectors at a MOI of 200 pu/cell for 1 h and then overlayed with DMEM medium containing 5% FBS. Twenty-four hours later, cells were washed 3 times for 5 min each with PBS and fixed with 4% paraformaldehyde (1 ml) for 30 min at room temperature. Cells were washed with PBS again and incubated for 2 h at 37 °C with primary antibody (1:200) in PBS containing 0.5% BSA ± 0.1% saponin for cell permeablization. Cells were again washed 3 times with PBS and incubated for 1 h at 37 °C with secondary antibody conjugated with fluorescein isothiocyanate (FITC) (1:200) in PBS containing 0.5% BSA. Cells were viewed using a Nikon Labophot II microscope and images were acquired using

a Spot RT digital camera. The 4G2 monoclonal antibody was used for analysis of AMA1 expression and the polyclonal R94256 antibody was used for analysis

of MSP142 expression. A549 cells in a 12-well plate were infected at 70% confluence with various adenovectors Epigenetic inhibitor at a MOI of 200 pu/cell for 1 h and then overlayed with DMEM medium containing 5% FBS. Twenty-four hours later, cells were trypinized, collected, and prepared for FACS analysis. For cell surface staining, cells were directly fixed with CytoFix/CytoPerm (BD Biosciences, San Jose, CA); for intracellular protein staining, Adenylyl cyclase cells were treated with cytoperm/cytofix (BD Biosciences) to fix and permeablize the cell membrane, prior to staining with the MSP-specific polyclonal antibody R94256. Glycosylation of AMA1 or MSP142 variants was analyzed with N-glycosidase PNGase F or Endo H (New England Biolabs, Ipswich, MA). PNGase F is an amidase that cleaves between the innermost GlcNAc and asparagine residues of complex oligosaccharides from N-linked glycoproteins. Endo H is a recombinant glycosidase which cleaves within the chitobiose core of high mannose and some hybrid oligosaccharides from N-linked glycoproteins. A549 cells at 80% confluence were infected at a MOI of 200 pu/cell with the indicated vectors expressing either AMA1 or MSP142. Twenty-four hours later the media was removed, the wells were washed 3 times with PBS and the cells were lysed in 3 ml of RIPA buffer (20 mM Tris [pH 7.4], 137 mM NaCl, 10% glycerol, 0.1% sodium dodecyl sulfate [SDS], 0.5% deoxycholate, 1% Triton X-100, 2 mM EDTA).