Cells were isolated from corneas as previously described (21 (
link)). Briefly, corneas were excised at 18 and 23 dpi and incubated in PBS-EDTA at 37°C for 15 minutes at 37°C. Stromas were separated from overlying epithelium and digested in 84 U
collagenase type 1 (Sigma-Aldrich, St. Louis, MO) per cornea for 2 hours at 37°C and then were triturated to form a single-cell suspension. Suspensions were filtered through a 40-
μm cell strainer cap (BD Labware, Bedford, MA) and washed and then stained. Suspensions were stained with:
PerCP-conjugated anti-CD45 (clone 30-F11), Alexa Fluor700-Gr-1 (clone RB6-8C5) and APC F4/80 (clone BM8) (from BioLegend, San Diego, CA); FITC conjugated anti-CD4 (clone RM4–5), PE-conjugated anti-CD8
α (clone 53–6.7), PE-Cy7-conjugated anti-CD11c (clone N418), (all BD PharMingen); eFlour 450 anti-NK1.1 (clone PK136), PE-conjugated CD11b (clone M1/70) (from eBiosciences, San Diego, CA). The strategy for analysis was to initially gate on live cells and then the CD45
+ cells. These CD45
+ cells were further evaluated for T cell markers CD4 and CD8, or for macrophage markers F4/80
+CD11b
+GR-1
−, or neutrophil markers GR-1
+,CD11b
+F4/80
−, or dendritic cell marker CD11c
+,F4/80
−. Cells were then analyzed on a flow cytometer (FACSAria with
FACSDIVA data analysis software; BD Biosciences.
Tajfirouz D., West D.M., Yin X.T., Potter C.A., Klein R, & Stuart P.M. (2017). CXCL9 compensates for the absence of CXCL10 during recurrent Herpetic Stromal Keratitis. Virology, 506, 7-13.