Quadriceps muscles from immunized mice were harvested after 18–24 h of the injection and cut into small pieces. A single cell suspension was prepared using
skeletal muscle dissociation kit (Miltenyi Biotec) according to manufacturer’s protocol. Briefly, small pieces of muscle were incubated in enzyme solution (enzyme D, enzyme P and enzyme A in DMEM) for 30 min at 37
oC with gentle shaking, passed through 70 µm cell strainer and wash with 10 ml DMEM. Centrifuge cell suspension at 300xg for 20 min. Cells were stained with a combination of the following fluorescently labeled antibodies:
anti-CD45-AF700,
anti-CD3-BV786,
anti-CD19-BV605,
anti-CD49b-PE, anti-CD11b-PE-Cy5, anti-CD11c-BV711,
anti-F4/80-FITC,
anti-Ly6C-PerCp,
anti-Ly6G-PE/Cy7, anti-MHCII-PE/Dazzle594, anti-CD80-BV650,
anti-CD40-APC,
anti-CXCR3-BV510 and
anti-CCR2-BV421 (all from BioLegend). Live/dead cells were analyzed using fixable viability dye
efluor780 (eBioscience). The stained cells were acquired using BD LSRFortessa cell analyzer and data was analyzed using FlowJo software (Tree Star). Total immune cells (CD45
+), myeloid cells (CD11b
+), monocytes (CD11b
+Ly6C
+), macrophages (CD11b
+F4/80
+), neutrophils (CD11b
+Ly6G
+), dendritic cells (DCs; CD11c
+MHCII
+), natural killer cells (NK cells; CD49b
+, CD3
−), B cells (CD11b
−CD11c
−CD19
+), T cells (CD11b
−CD11c
−CD3
+) and NKT cells (CD49b
+CD3
+) were gated by flow cytometry.
Jain S., George P.J., Deng W., Koussa J., Parkhouse K., Hensley S.E., Jiang J., Lu J., Liu Z., Wei J., Zhan B., Bottazzi M.E., Shen H, & Lustigman S. (2018). The parasite-derived rOv-ASP-1 is an effective antigen-sparing CD4+ T cell-dependent adjuvant for the trivalent inactivated influenza vaccine, and functions in the absence of MyD88 pathway. Vaccine, 36(25), 3650-3665.