Journal: International Journal of Molecular Sciences
Article Title: Human Monocytes Are Suitable Carriers for the Delivery of Oncolytic Herpes Simplex Virus Type 1 In Vitro and in a Chicken Embryo Chorioallantoic Membrane Model of Cancer
doi: 10.3390/ijms24119255
Figure Lengend Snippet: CD14 + - and EGFP-oHSV-1-infected (ICP4 + ) cells can be observed in UM-SCC-11B-derived tumors grown on eggs injected with EGFP-oHSV-1-infected THP-1 cells. The 10× immunohistochemistry (IHC) pictures of UM-SCC-11B tumors grown on the chorioallantoic membrane (CAM) of embryonated chicken eggs. ( a ) Image of a section of an UM-SCC-11B tumor from an egg injected with intravascular EGFP-oHSV-1-infected THP-1 cells (treated) stained with primary anti-CD14 antibody and secondary horseradish peroxidase (HRP)-conjugated antibody; ( b ) image of a section of an UM-SCC-11B tumor from a treated egg stained with primary anti-ICP4 antibody and secondary horseradish peroxidase (HRP)-conjugated antibody; ( c ) 10× IHC picture of a section of an UM-SCC-11B tumor from an egg injected intravascularly with PBS (untreated), stained with primary anti-CD14 antibody and secondary horseradish peroxidase (HRP)-conjugated antibody; ( d ) 10× IHC picture of a section of an UM-SCC-11B tumor from an untreated egg, stained with primary anti-ICP4 antibody and secondary horseradish peroxidase (HRP)-conjugated antibody; ( e , f ) selected untreated ( e ) and treated ( f ) tumor samples were analyzed via fluorescence microscopy upon incubation with a rabbit polyclonal antibody against pan-cytokeratin wide spectrum screening (Agilent Technologies, Santa Clara, CA, USA) followed by a secondary Alexa Fluor 594-conjugated antibody (ThermoFisher Scientific, Waltham, MA, USA). Nuclei were stained with 4′,6-diamidino-2-phenylindole (DAPI, Vector Laboratories, Newark, CA, USA). Pictures were taken with an Eclipse E800 microscope equipped with DS-U1 cooled digital camera (all from Nikon Instruments, Nikon Europe B.V., Amstelveen, The Netherlands). Filters with the following characteristics were used: for EGFP excitation (EX) 480/30, dichroic mirror (DM) 505, barrier (BA) 535/45; for Alexa Fluor 594 fluorophore EX 560/40, DM 595, BA 630/60. Merged imagines are displayed. Scale bars are reported.
Article Snippet: Selected tumor sections, fixed and cut as above described, were immunostained with a mouse monoclonal antibody against CD14 (Abcam, ab181470) and/or a rabbit polyclonal antibody against pan-cytokeratin wide spectrum screening (Agilent, Z0622) as a tumor cell marker.
Techniques: Infection, Derivative Assay, Injection, Immunohistochemistry, Staining, Fluorescence, Microscopy, Incubation, Plasmid Preparation