Figure 1. Activation of PI3K signaling in human and mouse PanNETs.
A. Representative IHC images of human pancreatic islet cells, and neuroendocrine islet cell tumors for pAKT (S473) (above), pPRAS40 (T246) (middle) and pS6 (S240/4) (below) stainings. For islet cell tumors, representative negative and positive stainings are shown. Black lines delimit the normal islet. Scale bar: 100 µm. B. Quantification for the pAKT (S473), pPRAS40 (T246) and pS6 (S240/4) staining in a cohort of 40 human pancreatic neuroendocrine tumors. Black lines delimit the normal islet. C. Representative images of the RIP1-Tag2 mouse model normal islet cells, encapsulated pancreatic tumor, and invasive carcinoma tumor stained with the PI3K pathway surrogates pAKT (S473), pPRAS40 (T246) and pS6 (S240/4). Dashed lines delimit the normal islet and the encapsulated tumor. Scale bar: 100 µm.