Abstract library

62 results for "signaling".
#2781 Case Report: Whole Exon Sequencing of Primary Lesion and Metastatic Liver Lesion in Pancreatic Neuroendocrine Tumor
Introduction: Pancreatic neuroendocrine neoplasms(NENs) are classified into neuroendocrine tumors (NET) G1, G2, G3, and neuroendocrine carcinoma (NEC), which are different pathogenesis. The two kinds of tumors that occurs in the same lesion in one patient is very rare. We found high grade neuroendocrine neoplasms(NENG3) with a diameter of 0.1 cm in a patient with a pancreatic NETG2 (1.7 cm in diameter). The cells were significant atypia with Ki67 index of 60%, focal necrosis, while metastatic nodules in the liver (12, 0.1-1.1 cm in diameter) were all high grade NENG3.
Conference: 17th Annual ENETS Conference 2020 (2020)
Category: Case reports
Presenting Author: Yanfen Shi
Authors: Shi Y, Zhong D, Li Y, Niu Y, ...
#2827 Characterization of Epigenetic Modulation in Pancreatic Neuroendocrine Neoplasms
Introduction: Pancreatic neuroendocrine tumors (PanNETs) represent a rare and heterogeneous tumor entity. Despite advances in therapy cancer progression and resistance mechanisms are still challenging. Recent genome wide sequencing analyses in PanNETs identified a large number of mutated genes involved in epigenetic modulation.
Conference: 17th Annual ENETS Conference 2020 (2020)
Category: Basic Science - Genetics, epigenetics, miRNAs, Omics
Presenting Author: MD Sebastian Krug
#2975 Next Generation Sequencing of Pancreatic Neuroendocrine Tumors in Russian Cohort
Introduction: The appearance of next generation sequencing (NGS), - a powerful high-performance method, allowed accumulation of a large amount of information concerning genetic and epigenetic patterns, however, the problem of matching clinical, histological picture with genetic structure in pNETs remains open.
Conference: 17th Annual ENETS Conference 2020 (2020)
Category: Trials in Progress/Trials in Concept
Presenting Author: PhD Vladimir Trifanov
#2952 Genomic Landscape of Neuroendocrine Neoplasms from Gastrointestinal Tract, Pancreas, Lung, Rare and Unknown Primary Locations
Introduction: There are still few large-scale sequencing data to depict the genomic landscape of neuroendocrine neoplasms (NEN).
Conference: 17th Annual ENETS Conference 2020 (2020)
Category: Basic Science - Genetics, epigenetics, miRNAs, Omics
Presenting Author: Professor Jie Chen
Authors: Chen L, Liu M, Zhang Y, Guo Y, ...
#2984 AGTR1 Is Overexpressed in Neuroendocrine Neoplasms, Regulates Secretion and May Serve as a Target for Molecular Imaging and Therapy
Introduction: Peptide receptor targeting has proven to be a pivotal tool for diagnostic imaging and radioligand therapy of neuroendocrine neoplasms (NENs), which frequently express somatostatin receptors (SSTRs) on their cell surface. However, up to 30 % of NEN patients do not benefit from SSTR-based approaches, others develop a resistance.
Conference: 17th Annual ENETS Conference 2020 (2020)
Category: Basic Science - Signaling pathways, receptors, biomarkers
Presenting Author: Dr. Carsten Grötzinger
Authors: Grötzinger C, Exner S, Schuldt C, Du J, ...
#3062 The Splicing Factor CELF4 Is Dysregulated in Neuroendocrine Tumors, Where It Can Enhance Aggressiveness Features
Introduction: There is increasing evidence that alterations in alternative splicing are linked to key tumor features in different cancers. Besides mutations, dysregulation of the splicing machinery would represent the main underlying cause for these alterations. Indeed, splicing dysregulation is emerging as a novel, transversal cancer hallmark, due to its association with multiple dysfunctions in tumor cells.
Conference: 17th Annual ENETS Conference 2020 (2020)
Category: Basic Science - Signaling pathways, receptors, biomarkers
Presenting Author: Emilia Alors-Pérez
#38 Expression of mTOR signaling pathway and effects of mTOR inhibitors on its pathway in human neuroendocrine tumors
Introduction: Neuroendocrine tumors (NET), especially well-differentiated endocrine tumors, are often slow-growing, indolent, and may not become clinically apparent until the manifestations of metastatic spread or carcinoid syndrome. Results of previous studies demonstrated that phosphoinositide 3-kinase (PI3K)/Akt/mTOR signaling pathway may be activated in the great majority of NET cells. mTOR inhibitors are therefore considered effective anti-tumor reagents but they may also induce an activation of PI3K/Akt and MAPK pathways as a compensatory action and reduce their own anti-tumor activities.
Conference: 7th Annual ENETS Conference (2010)
Category: Basic
Presenting Author: Professor Hironobu Sasano
Authors: Iida S, Miki Y, Ono K, Sasano H, ...
#79 PTOV-1 overexpression in neuroendocrine tumors: a new molecular marker
Introduction: PTOV-1 (Prostate Tumor Overexpressed-1) is a novel protein encoded by 12-exon gene localized in chromosome 19q.13.3. Recently identified as an androgen-induced gene, it is involved in prostate cell proliferation and in prostate human cancer. PTOV-1 expression has been demonstrated in neuroendocrine cells of normal prostate tissue. Preliminary data indicate that PTOV-1 can be related to flotilin, integrins and other cellular factors involved in cancer progression.
Conference: 7th Annual ENETS Conference (2010)
Category: Basic
Presenting Author: MD INES DE TORRES
#151 Rationale for combining mTOR with other targeted agents in the treatment of neuroendocrine tumors
Introduction: Advanced neuroendocrine tumors (NETs) are aggressive and incurable with standard treatment. Many cellular targets are being evaluated in this patient population, including mammalian target of rapamycin (mTOR), a kinase that is the central regulator of several signaling pathways related to cell growth, angiogenesis, and bioenergetics. Because mTOR serves as a neoplastic switch activated by many cancer-related mutations, mTOR inhibition may have broad efficacy across tumor types, including NETs. Somatostatin analogs (SSAs) have long been used to treat carcinoid symptoms in NET patients. The SSA octreotide long-acting release (LAR) demonstrated significant antitumor effects against advanced midgut NETs in the phase III PROMID study.
Conference: 7th Annual ENETS Conference (2010)
Category: Clinical
Presenting Author: Kjell Öberg
Authors: Öberg K, Yao J C, ...
#204 A Proteomic Approach Identifies Novel Proteins Involved in Invasion Mechanisms in Enteroendocrine Carcinomas
Introduction: Enteroendocrine tumors dramatically lack reliable biomarkers to accurately select therapeutic strategy, due to a poor knowledge of molecular mechanisms leading to local invasion and dissemination.
Conference: 8th Annual ENETS Conference (2011)
Category: Basic
Presenting Author: Colette Roche
Authors: Couderc C, Poncet G, Pourpe S, Couté Y, ...