Journal: Oncology Reports
Article Title: Sirtuin 7 promotes non-small cell lung cancer progression by facilitating G1/S phase and epithelial-mesenchymal transition and activating AKT and ERK1/2 signaling
doi: 10.3892/or.2020.7672
Figure Lengend Snippet: SIRT7 activates AKT/ERK1/2 signaling and regulates the expression of G1-phase checkpoint molecules for G1 to S transition as well as EMT molecules for EMT induction in NSCLC cells. (A and B) Western blot analysis of AKT/ERK1/2, G1-phase checkpoint and EMT molecules. (A) The representative western blot images. (B) The relative level of p-AKT (T308)/AKT, p-AKT (S473)/AKT and p-ERK1/2/ERK1/2 as well as p21, p27, cyclin D1, cyclin E1, CDK2, CDK4, E-cadherin, N-cadherin, vimentin, Snail and Slug in A549-SIRT7 (A549-mock served as a control) or H292-shSIRT7 (H292-shcontrol served as a control) NSCLC cells. *P<0.05, Student's t -test, n=6 per group. (C) IHC analysis of AKT/ERK1/2, G1-phase checkpoint and EMT molecules in xenograft tumor tissues. The representative IHC images are presented. SIRT7, sirtuin 7; EMT, epithelial-mesenchymal transition; NSCLC, non-small cell lung cancer; AKT, protein kinase; ERK1/2, extracellular signal-regulated kinase 1/2; CDK, cyclin-dependent kinase; IHC, immunohistochemistry.
Article Snippet: The pGEM/SIRT7 cloning plasmid carrying human SIRT7 coding sequence (CDS) (BC017305) was supplied by Sino Biological, Inc. Plasmids including pLenti6.3/IRES/GFP lentiviral plasmid-expressing blasticidin S deaminase and green fluorescent protein (GFP) as well as pLP1, pLP2 and VSVG lentiviral packing plasmids were supplied by Novobio Scientific, Inc. Lentiviruses including control shRNA lentivirus (LV-shcontrol) and SIRT7 shRNA (h) lentivirus (LV-shSIRT7) containing puromycin resistance gene were supplied by Santa Cruz Biotechnology, Inc.
Techniques: Expressing, Western Blot, Immunohistochemistry