Journal: Scientific Reports
Article Title: BCG therapy is associated with long-term, durable induction of Treg signature genes by epigenetic modulation
doi: 10.1038/s41598-021-94529-2
Figure Lengend Snippet: The change in mRNA expression and Treg population by BCG vaccination; direct data on the TSDR region of the Foxp3 gene and quantification of Foxp3 Treg cells. ( a ) The change in transcripts in CD4 + T cell by BCG was evaluated with mRNA seq. While no prominent changes were shown at year 1, most of Treg genes including FOXP3, TNFRSF18, CD25, IKZF4, CTLA4, FAS and CD45 were significantly upregulated at year 2 and year 3. Meanwhile, IKZF2, CD62L and IL2 showed upregulated mRNA expressions without significant. ( b ) The left heatmap indicate overall change in mRNA expression after BCG vaccination in each Treg gene. Red and green indicate up- and down-regulation in mRNA, respectively. ( c ) The average change in methylation (%) in Treg specific demethylated region (TSDR) was shown at baseline, 8 and 58 weeks after BCG vaccination (T1D, n = 4). While the ratio was 83.3 ± 5.5% at baseline, 80.8 ± 3.4% at 8 weeks and 65.5 ± 14.4% at 58 weeks (at 58 weeks, vs. baseline, p = 0.052; vs. 8 weeks, p = 0.08; one-tailed, paired t-test). ( d ) The representative gating images in flow cytometry are shown. Images of unstained, from one patient at baseline and 58 weeks after BCG vaccination are displayed in right, middle and right, respectively. ( e ) The percentage of Treg population was analyzed by flowcytometry. The individual data points for Treg frequency pre- and post-therapy were shown (n = 4). While the average ratio was 4.4 ± 1.1% at baseline, it was 6.3 ± 1.4% at 58 weeks (p = 0.01, two-tailed, paired t-test).
Article Snippet: Since the Human Infinium Methylation Epic Bead Chip did not contain the DNA for the TSDR region of the Foxp3 gene, both pyrosequencing and NGBS methods were used to assess methylation of this region (EpigenDx, Hopkinton, MA).
Techniques: Expressing, Methylation, One-tailed Test, Flow Cytometry, Two Tailed Test