p27kip1 Is Involved in the Resistance of Human Bronchial Carcinoids to m-TOR Inhibitors Abstract #1090

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
Aim(s): Our aim is to investigate the mechanisms of resistance to mTOR inhibitors in BC cells, in order to identify new therapeutic approaches
Materials and methods: Protein profiling of the main complexes regulating cell-cycle progression (CyclinE/CDK2, CyclinD1/CDK4, CDK-inhibitor p27) was performed, before and after treatment with E
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

To read results and conclusion, please login ...

Further abstracts you may be interested in

#429 Bronchial Carcinoid Response to mTOR Inhibitors Depends on mTOR Expression Levels
Introduction: Bronchial carcinoids (BCs), originating from endocrine cells dispersed in the respiratory epithelium, can be divided into typical (TBC) and atypical (ABC). TBC are less aggressive, smaller, and much less likely to metastasize, while ABC are more aggressive and metastasize. mTOR has a central role in regulating cell growth, metabolism, and apoptosis. A differential mTOR activation in BCs has been previously demonstrated, suggesting that mTOR pathway might play a predictive role in patients eligible for mTOR-targeted therapies
Conference: 9th Annual ENETS Conference (2012)
Category: Basic
Presenting Author: Dr Teresa Gagliano
Keywords: BC, mTOR
#680 Role of EGF Pathway in Regulating Bronchial Carcinoid Cell Proliferation
Introduction: Bronchial carcinoids (BC) are rare neuroendocrine tumors. Surgery is not feasible for infiltrating and metastatic disease. Medical therapy is often tried but is represented by chemotherapy and radiation, while somatostatin analogues are employed for symptomatic control. It is necessary to identify new molecules capable of providing medical treatment in cases for which surgical removal is not feasible. EGF, TGFα are growth factors which were demonstrated to be important in neuroendocrine tumors. EGF and TGFα bind to the EGF receptor and lead to the transcription of genes that regulate cell proliferation.
Conference: 10th Annual ENETS Conference (2013)
Category: Basic Science - mTOR and other pathways, signalling, receptors
Presenting Author: Dr Teresa Gagliano
Keywords: EGF, EGFR, BC
#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
#962 Cyclin D1 Levels are Involved in the Resistance to m-TOR Inhibitors in Human Bronchial Carcinoids
Introduction: Bronchial carcinoids (BC) are still orphans of medical therapy. We previously demonstrated that the typical BC human cell line NCI-H727 is sensitive to Everolimus, in terms of cell viability reduction, while the atypical human BC cell line NCI-H720 is not. However, the mechanisms underlying this phenomenon have not been fully clarified.
Conference: 11th Annual ENETS Conference (2014)
Category: Basic Science - mTOR and other pathways, signalling, receptors
Presenting Author: Master degree Katiuscia Benfini
Keywords: BC, mTOR
#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