Dirk H Busch, Ingrid M Pilip, Sujata Vijh, Eric G Pamer  Immunity 

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Coordinate Regulation of Complex T Cell Populations Responding to Bacterial Infection  Dirk H Busch, Ingrid M Pilip, Sujata Vijh, Eric G Pamer  Immunity  Volume 8, Issue 3, Pages 353-362 (March 1998) DOI: 10.1016/S1074-7613(00)80540-3

Figure 1 H2-Kd Tetramers Specifically Stain L. monocytogenes– Specific CTL Lines CTL lines specific for each of the L. monocytogenes–derived epitopes were generated as described in Experimental Procedures. CTL were stained with CyChr–conjugated anti-CD8 and with each of the PE–conjugated H2-Kd tetramers. Histograms showing H2-Kd tetramer staining of CD8–gated CTL specific for LLO91–99 (A), p60217–225 (B), p60449–457 (C), and mpl84–92 (D) are shown. Immunity 1998 8, 353-362DOI: (10.1016/S1074-7613(00)80540-3)

Figure 2 Direct Ex Vivo Detection of Epitope-Specific T Cell Populations Using Tetrameric MHC/Peptide Complexes (A) Splenocytes were obtained 7 days after infection of a BALB/c (H2d) mouse with a sublethal dose of L. monocytogenes. CD8+ T cells were enriched by MACS (Miltenyi) and triple-stained with anti-CD8, anti-CD62L, or anti-CD44 and with PE–conjugated tetrameric H2-Kd/peptide complexes. Dot plots for 120,000 CD8+ T cells are shown, with tetramer staining displayed on the y-axis and activation marker staining (CD62L and CD44) on the x-axis. Four log phases are shown. (B) CD8+ T cells were sorted from the region gates R1–R4 as indicated in (A) and were directly analyzed in CTL assays using peptide-coated51Cr-labeled P815 (H2d) target cells at effector-to-target cell ratios of approximately 0.3:1 (LLO– or p60217–225-enriched) or 3:1 (LLO– or p60217–225-depleted). The percent specific lysis is indicated. Immunity 1998 8, 353-362DOI: (10.1016/S1074-7613(00)80540-3)

Figure 2 Direct Ex Vivo Detection of Epitope-Specific T Cell Populations Using Tetrameric MHC/Peptide Complexes (A) Splenocytes were obtained 7 days after infection of a BALB/c (H2d) mouse with a sublethal dose of L. monocytogenes. CD8+ T cells were enriched by MACS (Miltenyi) and triple-stained with anti-CD8, anti-CD62L, or anti-CD44 and with PE–conjugated tetrameric H2-Kd/peptide complexes. Dot plots for 120,000 CD8+ T cells are shown, with tetramer staining displayed on the y-axis and activation marker staining (CD62L and CD44) on the x-axis. Four log phases are shown. (B) CD8+ T cells were sorted from the region gates R1–R4 as indicated in (A) and were directly analyzed in CTL assays using peptide-coated51Cr-labeled P815 (H2d) target cells at effector-to-target cell ratios of approximately 0.3:1 (LLO– or p60217–225-enriched) or 3:1 (LLO– or p60217–225-depleted). The percent specific lysis is indicated. Immunity 1998 8, 353-362DOI: (10.1016/S1074-7613(00)80540-3)

Figure 3 Kinetic Analysis of Epitope-Specific T Cell Populations during Primary Infection with L. monocytogenes Age- and sex-matched BALB/c mice were infected with a sublethal dose of L. monocytogenes. Individual mice were sacrificed on the indicated days following infection, and CD8+ T cells were enriched and stained for CD8, CD62L, and epitope-specific TCRs with each of the five PE–conjugated H2-Kd tetramers. The dot plots represent CD8+ gated T cells stained with specific tetramers (y-axis) and CD62L (x-axis). Four log phases are shown. Immunity 1998 8, 353-362DOI: (10.1016/S1074-7613(00)80540-3)

Figure 4 Kinetic Analysis of Epitope-Specific T Cell Populations during the Recall Response to L. monocytogenesInfection Age- and sex-matched, immune BALB/c mice (infected 35 days previously with a sublethal dose of L. monocytogenes) were reinfected with 100,000 bacteria. CD8+ T cells were enriched from spleens and stained and analyzed for CD62L and the five different H2-Kd tetramers as described in Figure 3. Immunity 1998 8, 353-362DOI: (10.1016/S1074-7613(00)80540-3)

Figure 5 Primary and Recall Response to Four Different Listeria- Derived Epitopes Are Synchronous The number of CD8+, CD62Llow T cells staining with each of the H2-Kd/epitope tetramers was quantified at each time point following primary infection and plotted as the absolute number of antigen-specific CD8 T cells per spleen. For LLO91–99-specific CTL, the number of CD62low and CD62Lhigh cells is also plotted. The mean value obtained from two mice and the standard deviation are shown for responses to primary infection (A and B) and following recall infection (C and D). Immunity 1998 8, 353-362DOI: (10.1016/S1074-7613(00)80540-3)

Figure 6 Phenotypic Shifts of Distinct T Cell Subpopulations Occur Synchronously during Primary and Recall Response to L. monocytogenes Infection BALB/c mice were infected with Listeria, and epitope-specific CD8+ T cells were analyzed on sequential days following infection. CD8+-enriched splenocytes were stained for CD8, CD62L, and each of the four L. monocytogenes epitopes containing H2-Kd tetramers. (A) Histograms demonstrate the FSC profiles of CD8+, CD62Llow, and H2-Kd/LLO91–99 tetramer-positive T cells (filled areas) and CD8+, CD62Lhigh, and H2-Kd tetramer-negative T cells (black lines) on sequential days following primary and reinfection with L. monocytogenes. The level of CD8 expression is also indicated for the same T cell populations in the right column of histograms. FSC, linear scale (0–250); FL3, four log-phases. (B–E) The differences in mean FSC (open circles, left y-axis) and mean CD8 expression (circles, right y-axis) between CD8+, CD62Llow, tetramer-positive and CD8+, CD62Lhigh, tetramer- negative T cell populations are plotted for each of the different epitope specificities at sequential timepoints during the primary and recall response to L. monocytogenes infection. The days following primary infection and reinfection (italic numbers) are indicated on the x-axis. Immunity 1998 8, 353-362DOI: (10.1016/S1074-7613(00)80540-3)