Journal: Vaccines
Article Title: Modulation of T-Cell-Dependent Humoral Immune Response to Influenza Vaccine by Multiple Antioxidant/Immunomodulatory Micronutrient Supplementation
doi: 10.3390/vaccines12070743
Figure Lengend Snippet: The supplementation with antioxidants/immunomodulators increased the frequency of GC CD4+ T cells in dLNs and spleens from mice injected with one dose of QIV. ( a ) The graph bars display the percentages of GC CD4+CXCR5+Bcl6+ T cells among (upper row) draining lymph node (dLN) lymphocytes and (lower row) splenocytes from mice injected with one dose (1D) and two doses (2D) of QIV (Vx), and administered with saline (Sal) or supplement (Suppl) determined by flow cytometry. The analyses were performed 14 days after injection of the first and second doses of QIV. The flow cytometry dot plots indicate the gating strategy for GC CD4+CXCR5+Bcl6+ T cells among (upper row) dLN lymphocytes and (lower row) splenocytes. (Right) CXCR5 vs. Bcl6 staining of CD4+ cells gated as indicated in (left) flow cytometry dot plot. CD4+ cells were gated within lymphocyte gates shown in a. ( b ) The graph bars display the proliferative index of GC CD4+CXCR5+ T cells, i.e., the increase in frequency of proliferating Ki67+ cells among GC CD4+CXCR5+ T cells in the presence of QIV antigens over that in their absence in cultures of (upper row) dLN lymphocytes and (lower row) splenocytes from mice injected with 1D and 2D of QIV (Vx) and administered with Supp or Sal in response to restimulation with QIV antigens. Flow cytometry dot plots indicate Ki67+ staining of CD4+ CXCR5+ (upper row) dLN lymphocytes and (lower row) splenocytes from lymphocyte gates shown in Fig 3b. Data are presented as median and interquartile range (IQR) (individual data points are incorporated into bars). n = 6 mice/group. * p ≤ 0.05, ** p ≤ 0.01.
Article Snippet: The following antibodies: fluorescein isothiocyanate (FITC)-conjugated anti-B220 (CD45R, clone RA3-6B2), FITC-conjugated anti-FoxP3 (clone FJK-16s), and phycoerythrin (PE)-conjugated anti-CD95 (clone 15A7) were obtained from eBiolegend (Carlsbad, CA, USA); PE-conjugated anti-CD4 antibody (clone RM4-5) was purchased from Biolegend (San Diego, CA, USA); peridinin chlorophyll protein cyanine (PerCP-Cy™5.5)-conjugated anti-CD4 antibody (clone RM4-5), perCP-Cy™5.5- or PE-conjugated anti-mouse CXCR5 (Clone 2G8), and Alexa Fluor (AF) 647-conjugated anti-human/mouse Bcl6 (K112-91) were acquired from BD Biosciences Pharmingen (Mountain View, CA, USA) and were used for immunostaining and flow cytometric analysis (FCA).
Techniques: Injection, Saline, Flow Cytometry, Staining