In a dose dependent manner, we observed a significant reduction in the number of cells expressing, and overall intensity, of DENV envelope protein (DENV E) 24 h post infection (Figure 1D and Supplementary Figure S2) (DENV E+ cells; non-treated (14.17 ± 0.33)%, 5 μM SFG (14.00 ± 0.60)%; ns(non-significance), 10 μM SFG (10.40 ± 0.95)%; p < 0.05, 20 μM SFG (0.60 ± 0.12)%; p < 0.001; n = 3). This evidence concerns the gene ERVW-1 and infection.