Cross-Talk Between EGFR and IGF1R Influences the Response to RTK Inhibitors in Bronchopulmonary (BP)-NET Cell Lines Abstract #1462

Introduction: BP-NETs represent ~30% of all neuroendocrine tumors. BP-NET treatment is challenging due to onset of resistance to chemo and targeted therapies. EGFR and IGF1R had been associated with tumor onset and progression in several neoplasia.
Aim(s): To investigate the role of EGFR and IGF1R and their possible cross-talk in BP-NET cells.
Materials and methods: Receptors expression was evaluated by Western blot in 2 BP-NET cell lines (NCI-H720, NCI-H727 cells). Cell viability and apoptosis were measured by ATPlite assay and Caspase3/7 assay, respectively. IGF1R and EGFR heterodimer formation was evaluated by immunoprecipitation (IP).
Conference: 13th Annual ENETS conference (2016)
Category: Basic Science - mTOR and other pathways, signalling, receptors
Presenting Author: Dr Teresa Gagliano
Keywords: BP-NET RTK

To read results and conclusion, please login ...

Further abstracts you may be interested in

#1039 Receptor Tyrosine-Kinases Inhibition: New Insights on Therapeutic Implications of EGFR and IGF1R in Human Bronchopulmonary NET
Introduction: The main treatment for bronchopulmonary NET(BP-NET) is surgery, which is not feasible for infiltrating and metastatic disease, where medical therapy is tried. Identifying new therapeutic targets is important to provide adequate medical treatment for patients with BP-NET. Sunitinib, a multi-targeted receptor tyrosine kinase inhibitor (TKI), is mainly described to inhibit VEGF
Conference: 12th Annual ENETS Conference (2015)
Category: Basic Science - mTOR and other pathways, signalling, receptors
Presenting Author: Dr Teresa Gagliano
Keywords: RTK, BP-NET, IGF1R, EGFR
#933 The Cytotoxic Effect of Sunitinib on Human Bronchial Carcinoid Cell Lines and Primary Cultures is Counteracted by EGF and IGF-1, but not by VEGF
Introduction: Bronchial carcinoids (BC) are rare tumors originating from endocrine cells dispersed in the respiratory epithelium. The main BC treatment is surgery, but which is not feasible for large, infiltrating and metastatic disease. In these settings, medical therapy is often tried. Therefore it is important to identify new therapeutic targets and new molecules capable of providing adequate medical treatment for patients with BC. Sunitinib is an oral, small-molecule, multi-targeted receptor tyrosine kinase inhibitor.
Conference: 11th Annual ENETS Conference (2014)
Category: Basic Science - mTOR and other pathways, signalling, receptors
Presenting Author: Dr Teresa Gagliano
Keywords: BC, RTK, Sunitinib
#1086 mTOR Down-Stream Signaling Pattern May Predict pNET Response to Everolimus
Introduction: NETs are rare neoplasms arising from neuroendocrine cells spread in the respiratory and gastro-entero-pancreatic epithelium. The mammalian target of rapamycin (mTOR) pathway plays a central role in the regulation of cell growth, metabolism, and apoptosis representing a novel molecular target. This pathway is constitutively activated in pancreatic NETs (pNETs) providing the basis for the development of specific mTOR inhibitors as new therapeutic tools.
Conference: 12th Annual ENETS Conference (2015)
Category: Basic Science - mTOR and other pathways, signalling, receptors
Presenting Author: PhD student Simona Falletta
Keywords: pNET, Everolimus, mTOR
#1089 Role of TGF beta-1 in Regulating Pancreatic Neuroendocrine Tumor Cell Viability
Introduction: Neuroendocrine tumors (NETs) are heterogeneous neoplasms arising from neuroendocrine cells spread in the respiratory and gastro-entero-pancreatic epithelium. The role of transforming growth factor beta-1 (TGF b-1) in NET biology is largely unknown. TGF b-1 signaling pathway is tumor suppressive in most non-transformed epithelial cell lines. In contrast, many human carcinomas are refractory to the growth–inhibitory effects of TGF b-1.
Conference: 12th Annual ENETS Conference (2015)
Category: Basic Science - mTOR and other pathways, signalling, receptors
Presenting Author: PhD student Simona Falletta
Keywords: pNET, TGF-b1, Everolimus
#1090 p27kip1 Is Involved in the Resistance of Human Bronchial Carcinoids to m-TOR Inhibitors
Introduction: Bronchial carcinoids (BC) are still orphan of medical therapy. We previously demonstrated that the typical BC human cell line NCI-H727 is sensitive to Everolimus (E), in terms of cell viability reduction, with a G0 cell-cycle arrest, while the atypical human BC cell line NCI-H720 is not. The mechanisms underlying this phenomenon have not been clarified
Conference: 12th Annual ENETS Conference (2015)
Category: Basic Science - mTOR and other pathways, signalling, receptors
Presenting Author: Master Degree Katiuscia Benfini
Keywords: RAD001, BC, p27kip1, Cell cycle