Western blotting
Protein samples were extracted from the cells or tumor tissues
with lysis buffer (50 mmol/L Tris–HCl, pH 7.5, 15 mmol/L
EGTA, 100 mmol/L NaCl, 0.1 % [vol/vol] Triton X-100 and
complete protease inhibitor cocktail). Equal amounts of protein
were run on 10 % SDS-PAGE and blotted onto
polyvinylidene difluoride membranes. The blots were reacted
with primary antibodies against HIF-1a (BD Pharmingen),
PTEN (Epitomics), eNOS (BD Pharmingen), phosphorylated
(p)-eNOS (S1177), p-Akt (S473) and Akt (Cell Signaling
Technology), respectively, followed by the reaction with the
appropriate secondary antibodies and the detection with the
enhanced chemiluminescence kit as described previously [15].
Western blottingProtein samples were extracted from the cells or tumor tissueswith lysis buffer (50 mmol/L Tris–HCl, pH 7.5, 15 mmol/LEGTA, 100 mmol/L NaCl, 0.1 % [vol/vol] Triton X-100 andcomplete protease inhibitor cocktail). Equal amounts of proteinwere run on 10 % SDS-PAGE and blotted ontopolyvinylidene difluoride membranes. The blots were reactedwith primary antibodies against HIF-1a (BD Pharmingen),PTEN (Epitomics), eNOS (BD Pharmingen), phosphorylated(p)-eNOS (S1177), p-Akt (S473) and Akt (Cell SignalingTechnology), respectively, followed by the reaction with theappropriate secondary antibodies and the detection with theenhanced chemiluminescence kit as described previously [15].
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