Memory CD8+ T cells that become terminally differentiated by multiple antigen encounters lose core 2 O-glycan synthesis activity. Memory CD8+ T cells that.

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Memory CD8+ T cells that become terminally differentiated by multiple antigen encounters lose core 2 O-glycan synthesis activity. Memory CD8+ T cells that become terminally differentiated by multiple antigen encounters lose core 2 O-glycan synthesis activity. (A) Expression of CD62L and KLRG1 on primary and tertiary memory P14 CD8+ T cells 90 days after LCMV infection and (B) binding to E- and P-selectins. (C and D) Quantification of (B). (E) Expression of CD122 and CD132. (F and G) Quantification of (E). (H) Expression of total core 1 O-glycans (Jacalin) and unsialylated core 1 O-glycans (PNA). (I and J) Quantification of (H). (K) Primary and tertiary memory P14 CD8+ T cells were purified and stimulated with the indicated concentration of IL-15 for 15 min, and phosphorylation of STAT5 (Y694) was analyzed by immunoblot. (L) Primary and tertiary memory CD8+ T cells were purified and cultured with IL-15 for 3 days. Binding of MAL II, PNA, and the 1B11 antibody was analyzed. (M) Same as (L), except the glycosylation of PSGL-1 was analyzed by immunoblot. (N) Same as (L), except binding to E-selectin was analyzed by flow cytometry. (O) Quantification of (N) from four independent experiments. (P and Q) Same as (N) and (O), except for P-selectin. Jossef F. Osborn et al. Sci. Immunol. 2017;2:eaan6049 Copyright © 2017 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works