Ubc-GFP donor animals were subjected to the experiments either untreated or after one week of treatment with PBS or colchicine (0.25 mg/kg BW) injected intraperitoneally once daily. Single cell suspensions were prepared from the bone marrow as described above. Neutrophils and monocytes were isolated by staining the cells with Ly6G-PE (clone 1A8) and CD115-biotin (clone AFS98, both BioLegend) followed by linking to magnetic beads (anti-PE and streptavidin microbeads, Miltenyi Biotec, Bergisch Gladbach, Germany) and enrichment on magnetic-activated specific columns (130-042-401, Miltenyi Biotec). The degree of purification of the separated cells was determined by flow cytometry.
Equal cell amounts were injected intravenously into Apoe-/- mice 24 h before harvest. Quantification of recruited CD11bhighGFPhigh cells within aortas was assessed by flow cytometry.