Protein e traction and immuno blot analysis selleck The BEAS 2B and AEC II were lysed using RIPA lysis buffer, containing 1% NP 40, 0. 1% SDS, 150 mM sodium chloride, 0. 5% sodium deo ycholate, and 50 mM Tris with a protease inhibitor cocktail and PhosSTOP. The cell lysates were centrifuged at 12000 rpm for 5 min and the resulting supernatant was collected. The e tracted protein was quantified by protein assay. Equal amounts of protein were separated using 10% SDS polyacrylamide gel electrophoresis and transferred to Immobilon P membranes. After blocking with 5% skimmed milk, the membranes were incubated with various primary antibodies and then incubated with the corresponding secondary antibodies. The protein bands were detected using an Immobilon Western Chemi luminescent HRP Substrate and quantified by the ImageQuant 5.

2 software. Terminal deo ynucleotidyl transferase dUTP nick end labeling assay The BEAS 2B and AEC II, and OCT embedded lung tissue from the mice were analyzed for the apoptosis level using an in situ cell Death Detection Kit according to the manufacturers instructions. Fluorescence positive cells were photographed by a Leica DM 4000B microscope. Flow cytometry analysis The BEAS 2B and AEC II were analyzed on a FITC Anne in V apoptosis detection Kit I according to the manufacturers instructions. The FITC positive cells were analyzed using a FACS Calibur flow cytometer. Immuno histochemistry assay Paraffin was removed from paraffin embedded tissue sections by ylene, dehydrated by ethanol, and re hydrated by PBS.

After treatment with 3% H2O2, the sections were applied to a SuperSensitive Polymer HRP IHC Detection System and incubated with PlGF, p JNK, and p PKC antibodies as primary antibodies. The stained sections were photographed using a Leica DM 4000B microscope. Hemato ylin and eosin staining Paraffin was removed from paraffin embedded tissue sections by ylene, dehydrated by ethanol, and re hydrated by PBS. Sections stained with H and E were photographed by a Leica DM 4000B microscope. NE induced emphysema The dose of NE was four fold higher than that of porcine pancreatic elastase Cilengitide according to previous report and the methodology of intra tracheal instilling NE was performed as previously described. Briefly, eight week old mice were intra tracheally given saline, 400 mU ml NE, 400 mU ml NE with 50 mg kg JNK inhibitor SP600125, 3 mg kg scramble siRNA, 3 mg kg mouse PKC siRNA and 3 mg kg PlGF siRNA weekly for one month. The dose of siRNA instillation was according to a previous study. Each e perimental group had five mice and the processing of lung tissues and BAL fluid were performed as new product previously described.