A-D. Quiescent HASMCs (A & C) or MASMCs (B & D) were treated
with and without thrombin (0.5 u/ml) for the indicated time periods, cell
extracts were prepared and analyzed by Western blotting for CDC6, IL-33 and
β-actin levels using their specific antibodies. E-H. HASMCs (E & G)
or MASMCs (F & H) that were transfected with siControl or siCDC6 (100 nM) or
preincubated with IgG or neutralizing IL-33 antibody (100 ng/ml) were quiesced
and tested for thrombin (0.5 U/ml)-induced DNA synthesis (E & F) or
migration (G & H). HASMCs (I & K) or MASMCs (J & L) that were
transfected with siControl or siLMCD1 (100 nM) and quiesced were treated with
and without thrombin (0.5 U/ml) for 8 hrs, cell extracts were prepared and
analyzed by Western blotting for CDC6, IL-33 and β-actin levels using
their specific antibodies. The same membranes were also reprobed for LMCD1
levels to show its siRNA efficacy. The bar graphs represent the Mean ±
S.D. values of three independent experiments. *, p < 0.05 versus
siControl + vehicle; **, p < 0.05 versus siControl + Thrombin.