Journal: bioRxiv

Article Title: Strain-Specific Human Natural Killer Cell Recognition of Influenza A Virus

doi: 10.1101/148528

Figure Lengend Snippet: (A) Cytokine concentrations assessed by Luminex®, values displayed represent the mean fluorescence intensity in pH1N1-infected/H3N2 infected conditions (MOI=3). Cytokines elevated by 2.5-fold over the level in mock-infected monocytes are plotted. (B) Impact of cytokine receptor blocking on the NK cell IFN-γ response evaluated by pre-incubating NK cells for 1 hr with blocking antibodies specific to IFNAR2, IL-12R, IL-15R, IL-18R, and IFNGR1 followed by co-culture with infected monocytes. 24 HPI, intracellular cytokine staining was used to assess NK cell IFN-γ + frequency compared to treatment with an isotype control antibody (H3N2: n =2-6, pH1N1: n =9). (C) NK cells were incubated for 1 hr with antibodies specific to IFNAR2 and CD226 or CD54 followed by co-culture with autologous infected monocytes. At 24 HPI, intracellular cytokine staining was used to assess IFN-γ production compared to treatment with an isotype control antibody ( n =6). * P < 0.05, ** P < 0.005, Wilcoxon signed-rank test. (D) Model of strain-specific NK cell recognition of influenza A infection. pH1N1-infection of monocytes virus does not downregulate CD54 and CD112 to the same extent as H3N2-infected monocytes. CD54 expression is retained on Flu-NP + cells while CD112 expression is preferentially retained on exposed, uninfected monocytes. pH1N1 infection of monocytes elicits enhanced IFN-α secretion and blockade of IFNAR2 dampens NK cell anti-pH1N1 IFN-γ production.

Article Snippet: IL-12R β 2 Ab (R&D Systems AF1959-SP) was used at a final concentration of 83.33 μg/mL.

Techniques: Luminex, Fluorescence, Infection, Blocking Assay, Co-Culture Assay, Staining, Control, Incubation, Virus, Expressing

Journal:

Article Title: Expression of the ?1?1 integrin, VLA-1, marks a distinct subset of human CD4 + memory T cells

doi: 10.1172/JCI200319607

Figure Lengend Snippet: VLA-1 expression is associated with Th1 polarization. (a) CD4+ PBLs were purified into VLA-1+ and VLA-1– fractions, activated with PMA/ionomycin for 5 hours, and analyzed for intracellular IFN-γ production. (b) CD4+ PBLs were stimulated with TT or anti-CD3; 10 days later the cells were harvested and purified into VLA-1+ and VLA-1– fractions, activated with PMA/ionomycin, and analyzed for intracellular IFN-γ and IL-4. (c) CD4+ PBLs were labeled with CFSE, stimulated with TT, and 10 days later purified into VLA-1+ and VLA-1– fractions. Subsequently, the two subsets were activated and analyzed for divisions and intracellular IFN-γ. (d) CD4+ PBLs were stimulated with TSST-1 in two different environments: Th1 (IL-12+) or TH2 (IL-4+ and anti–IFN-γ). Ten days later cells were harvested and analyzed for VLA-1 and Vβ2 surface expression (left) or activated and analyzed for intracellular IFN-γ (right). (e) Fresh SFLs from RA (n = 4) and PsA (n = 2) patients were immediately activated and analyzed for surface expression of CD4, VLA-1, and intracellular IFN-γ. The dot plots were obtained by pregating on CD4+ events, and a representative patient sample is shown.

Article Snippet: To induce Th1 polarization, the CD4 + cells were stimulated with 2.5 μg/ml of anti-CD3 mAb in a medium containing 5 ng/ml recombinant human IL-12 (R&D Systems Inc., Minneapolis, Minnesota, USA).

Techniques: Expressing, Purification, Labeling

Journal: International Journal of Molecular Sciences

Article Title: Intraclonal Enrichment of IL-23 Receptor Complex Expression in the Proliferative Fraction of Chronic Lymphocytic Leukemia

doi: 10.3390/ijms27031202

Figure Lengend Snippet: IL-23R and IL-12R expression in ex vivo CLL cells assessed by flow cytometry. FSC is proportional to cell size and SSC reflects intracellular complexity/granularity (each dot represents one cell). Axes in marker plots show fluorescence intensity for the indicated markers. Percentages within gates indicate the fraction of cells relative to the parent population. Lymphocytes were identified by FSC/SSC properties, followed by doublet exclusion using pulse height vs. width plots. Within the single-cell gate, CD19 + /CD5 + CLL cells were selected. This population was further sub-divided into RF and PF based on the differential expression of CD184 and CD5. ( A ) Gating strategy used to identify lymphocytes, single cells, CD19 + CLL cells, and to discriminate proliferative fraction (PF) and resting fraction (RF); ( B ) surface expression of IL-23R, IL-12Rβ1, and IL-12Rβ2 receptor subunits in ex vivo CLL cells, shown for CD19 + PF and RF populations; ( C ) representative flow cytometry plots showing sorting of PF and RF populations from six CLL samples according to the gates indicated; ( D ) IL-12Rβ1 mRNA expression in sorted RF and PF cells, measured by RT-qPCR. Data are shown as mean ± SEM. Statistical significance of the difference is evaluated using the two-sided Wilcoxon signed-rank test. * p < 0.05; ** p < 0.01, ns: not significant. FSC: forward scatter; SSC: side scatter; PE Phycoerythrin; PE-Cy7: Phycoerythrin–Cyanine 7; APC: Allophycocyanin; AF 488: Alexa Fluor 488; PE VIO 770: near-infrared fluorochrome emitting in the ~770–780 nm range.

Article Snippet: The following monoclonal antibodies were used: mouse anti human IL-23R-PE (Cat. #FAB14001P, R&D Systems, Minneapolis, MN, USA), mouse anti human IL-12Rβ1-BB515 (CD212, BD Hori-zon, Cat. #565043, BD Biosciences, San Jose, CA, USA, and mouse anti human IL-12Rβ2-PerCP (Cat. #FAB1959C, R&D Systems).

Techniques: Expressing, Ex Vivo, Flow Cytometry, Marker, Fluorescence, Single Cell, Quantitative Proteomics, Quantitative RT-PCR

Journal: International Journal of Molecular Sciences

Article Title: Intraclonal Enrichment of IL-23 Receptor Complex Expression in the Proliferative Fraction of Chronic Lymphocytic Leukemia

doi: 10.3390/ijms27031202

Figure Lengend Snippet: IL-23R and IL-12R expression in CLL cells after incubation with CpG and CpG + IL-15 for 72 h assessed by flow cytometry analyses. ( A ) Representative flow cytometry gating strategy used to identify CLL cells and to assess IL-23R and IL-12R complex expression under the indicated culture conditions (medium alone, CpG, or CpG + IL-15) after 72 h; ( B ) percentage of CLL cells expressing the IL-23R receptor subunit, IL-12Rβ1 receptor subunit, and IL-12Rβ2 receptor subunit following 72 h incubation under the indicated conditions; ( C ) percentage of CLL cells expressing the IL-23R complex and the IL-12R complex following 72 h incubation under the indicated conditions. Statistical significance of the difference is evaluated using the two-sided Wilcoxon signed-rank test. * p < 0.05; **** p < 0.0001. FSC: forward scatter; SSC: side scatter; PE Phycoerythrin; PE-Cy7: Phycoerythrin–Cyanine 7; APC: Allophycocyanin; AF 488: Alexa Fluor 488.

Article Snippet: The following monoclonal antibodies were used: mouse anti human IL-23R-PE (Cat. #FAB14001P, R&D Systems, Minneapolis, MN, USA), mouse anti human IL-12Rβ1-BB515 (CD212, BD Hori-zon, Cat. #565043, BD Biosciences, San Jose, CA, USA, and mouse anti human IL-12Rβ2-PerCP (Cat. #FAB1959C, R&D Systems).

Techniques: Expressing, Incubation, Flow Cytometry

Journal: International Journal of Molecular Sciences

Article Title: Intraclonal Enrichment of IL-23 Receptor Complex Expression in the Proliferative Fraction of Chronic Lymphocytic Leukemia

doi: 10.3390/ijms27031202

Figure Lengend Snippet: Differential expression of IL-23R and IL-12R in CLL RF and PF subsets after stimulation with CpG and CpG + IL-15 assessed by flow cytometry analyses. ( A ) Representative flow cytometry gating strategy used to identify CLL cells and to distinguish RF and PF subsets, followed by assessment of IL-23R and IL-12R complex expression after 72 h incubation with CpG or CpG + IL-15; ( B ) percentage of RF and PF CLL cells expressing the IL-23R receptor subunit, IL-12Rβ1 receptor subunit, and IL-12Rβ2 receptor subunit after 72 h incubation under the indicated conditions; ( C ) percentage of RF and PF CLL cells expressing the IL-23R complex and the IL-12R complex after 72 h incubation under the indicated conditions. Each symbol represents an individual CLL sample; horizontal bars indicate mean ± SEM. Statistical significance of the difference is evaluated using the two-sided Wilcoxon signed-rank test. ** p < 0.01; **** p < 0.0001, ns: not significant. FSC: forward scatter; SSC: side scatter; PE Phycoerythrin; PE-Cy7: Phycoerythrin–Cyanine 7; APC: Allophycocyanin; AF 488: Alexa Fluor 488; BV421 = Brilliant Violet 421.

Article Snippet: The following monoclonal antibodies were used: mouse anti human IL-23R-PE (Cat. #FAB14001P, R&D Systems, Minneapolis, MN, USA), mouse anti human IL-12Rβ1-BB515 (CD212, BD Hori-zon, Cat. #565043, BD Biosciences, San Jose, CA, USA, and mouse anti human IL-12Rβ2-PerCP (Cat. #FAB1959C, R&D Systems).

Techniques: Quantitative Proteomics, Flow Cytometry, Expressing, Incubation