lungs were harvested for cytokine analysis Five hundred microliter of the
mammalian tissue protein extraction reagent (T-PER) (Thermo Scientific)
containing protease inhibitor cocktails (Roche, Indianapolis, IN), was added
to the lung tissue and homogenized in a tissue homogenizer. Subsequently,
tissue lystate was centrifuged at 10,000 × g for 5 minutes at 4C.
Supernatants were collected and protein concentrations in extracts were
quantified using BCA method and 1mg of total lysate was added for each well
in a 96-well plate. Cytokines were quantified using Bio-Plex Pro Mouse
Cytokine 23-plex and Bio-Plex Pro TGF-β Assays (Bio-Rad), IFN beta
Mouse ProcartaPlex Simplex Kit and IL-28B/(IFN lambda 3) Mouse ELISA kit
(eBioscience), as recommended by the manufacturer. The samples were acquired
and analyzed using Bioplex-200 with the Bioplex Manager 6.1.1. The data were
normalized by (the amount of cytokine/ml) * (extraction volume) divided by
the weight of the lung tissue (mg).