Figure 2. Effect of resveratrol and quercetin on viral replication.
A549 cells were either mock-infected (Ctrl) or infected with hMPV at MOI of 1 for 24h in the presence or absence of 50 µM resveratrol or 10 µM quercetin, and harvested to prepare (A) total RNA to quantify RSV N gene expression by qRT-PCR; and (B) total cell lysates for western blot analysis for hMPV viral protein expression. For loading controls, membrane was stripped and reprobed with anti β-actin antibody; (C) A549 cells infected with hMPV at MOI of 1 for 24h and treated or untreated with various doses of resveratrol (10 – 50 µM in DMSO) or quercetin (1 – 10 µM in DMSO) or vehicle alone were harvested to measure viral titer by plaque assay. Results are expressed as mean ± standard error and are representative of three independent experiments. *P < 0.05 relative to hMPV-infected cells.