Journal: Oncology Reports
Article Title: Evaluation of co‑inhibition of ErbB family kinases and PI3K for HPV‑negative head and neck squamous cell carcinoma
doi: 10.3892/or.2025.8871
Figure Lengend Snippet: A combination of copanlisib and afatinib effectively blocked the phosphorylation of HER2, HER3 and Akt, and enhanced caspase-3 cleavage. (A) Cal27 and (B) FaDu cells were treated with increasing concentrations of copanlisib, 0.5 µM afatinib or their combination for 24 h before lysis. The indicated proteins were detected by western blot analysis. C-, cleaved; P-, phosphorylated.
Article Snippet: The following antibodies were purchased from Cell Signaling Technology, Inc.: Phosphorylated (P)-Akt-S473 (cat. no. 4058), P-Akt-T308 (cat. no. 9275), Akt (cat. no. 2938), P-HER2-Y1248 (cat. no. 2247), HER2 (cat. no. 4290), P-HER3-Y1289 (cat. no. 2842), HER3 (cat. no. 12708), caspase-3 (cat. no. 9665), cleaved-caspase-3 (cat. no. 9664) and β-actin (cat. no. 4967).
Techniques: Phospho-proteomics, Lysis, Western Blot