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. 2017 Jan 6;13(1):e1006145. doi: 10.1371/journal.ppat.1006145

Fig 3. TRIM25 synergizes with ZAP to block SINV replication.

Fig 3

(A) Candidate genes that significantly increased SINV replication in the secondary screen when silenced by individual siRNAs at both concentrations were validated in a larger scale 24-well plate format. Triplicate wells of T-REx-hZAP cells were transfected with the indicated siRNA, induced to express ZAPS, and infected with SINV Toto1101/Luc at a MOI of 10. Each symbol represents the value obtained from a single well after 24 h of infection. White circles represent results using pooled siRNA controls that were either NT or ZC3HAV1-specific. The data is representative of 3 independent experiments. Asterisks indicate statistically significant differences (Student’s t-test, **, p<0.005; ***, p<0.0005; ****, p<0.0001). (B) Triplicate wells of T-REx-hZAP cells were transfected with the indicated siRNA, induced to express ZAPS, and infected with SINV Toto1101/Luc at a MOI of 10. Protein expression levels of TRIM25 and ZAP for the same transfections in a duplicate well were determined by immunoblotting. β-actin was used as a loading control. The data is representative of 4 independent experiments. The p-value from Student’s t-test is shown. (C) SINV replication in infected 293T cells in which ZC3HAV1 (left) or TRIM25 (middle) were silenced, and in ZC3HAV1-null 293T cells in which TRIM25 was silenced (right) is plotted. At 48 h post-transfection with siRNA, cells were infected with SINV Toto1101/Luc at a MOI of 0.01, and lysed at 6, 12, 24, and 40 h p.i. for measurement of luciferase activity. The data is representative of 3 independent experiments. Asterisks indicate statistically significant differences (two-way ANOVA, *, p<0.05; **, p<0.01; ****, p<0.0001).