Journal: Cell Reports Medicine
Article Title: Safety and immunogenicity of SARS-CoV-2 self-amplifying RNA vaccine expressing an anchored RBD: A randomized, observer-blind phase 1 study
doi: 10.1016/j.xcrm.2023.101134
Figure Lengend Snippet: CD4 + T cell responses Flow cytometric analysis was performed to analyze RBD-specific T cells. Responses to VLPCOV-01, BNT162b2, or placebo are shown as fold change from baseline (day 1) to week 4 (day 29) for each cohort. The experiment was performed once. (A) The activated CD4 + T cells, characterized by the expression of CD154. (B) The response in CD4 + Th1 cells was characterized by the expression of interleukin-2, tumor necrosis factor α, and/or interferon-γ. (C) The response in CD4 + Th2 cells, which was measured by expression of interleukin-4 and/or -13. (D) The response in CD4 + Th17 cells, characterized by the expression of interleukin-17. (E) The CD4 + IL-21+ cells, which were measured by expression of IL-21. (F) The correlation between IgG antibody titers against SARS-CoV-2 RBD protein and the percentage of RBD-specific CD4 + Th1 cell responses following vaccination with VLPCOV-01. Spearman’s rank correlation coefficient and p value were calculated following log transformation of source data (r = 0.2717, p = 0.0092). (G–K) CD8 + cells expressing interferon-γ, tumor necrosis factor α, CD107a, macrophage inflammatory protein 1b, or interleukin-2, respectively. (A–E and G–K) The horizontal bars indicate geometric mean value.
Article Snippet: Mouse anti-human IL-4-PE-Cy7 (clone:8D4-8) , BD Biosciences , cat# 560672; RRID: AB_1727547.
Techniques: Expressing, Transformation Assay