AST, but not ASIV, reduced surface expression of TNFR1 protein.

<p>Confluent mAECs were incubated with 250 µg/mL AST or ASIV for 2 h, then cell surface proteins were isolated and TNFR1 expressed on the cell surface was measured by Western blot analysis. Data were representative of three independent experiments with determinations made in triplicate and shown as mean values+S.D. **P<0.01 compared with cells treated with control group. CN: control.