Abstract library

13 results for "upregulation".
#2905 DNA Methyltransferase Inhibitor Hydralazine Induces Upregulation of Somatostatin Type 2 Receptors in Human Neuroendocrine Tumor Cells
Introduction: Epidrugs like DNA methyltransferase inhibitors (DNMTi) can increase somatostatin receptor type 2 (SST2) expression in neuroendocrine tumor (NET) cells in vitro and in vivo. This effect could be used for NET patients with low SST2 expression who are currently ineligible for somatostatin analogue (SSA) treatment. However, the DNMTi known to stimulate SST2 have either a high toxicity profile or are not yet approved.
Conference: 17th Annual ENETS Conference 2020 (2020)
Category: Basic Science - Genetics, epigenetics, miRNAs, Omics
Presenting Author: Dr Julie Refardt
#2988 Epigenetic Treatment with Histone Deacetylase Inhibitor Enhances Uptake of [111In]In-DOTA-TATE by Increased SST2 Expression on Neuroendocrine Tumor Cells
Introduction: The somatostatin-2 receptor (SST2) is a target for peptide receptor radionuclide therapy (PRRT) in neuroendocrine tumors (NETs). By using epigenetic drugs, which can regulate gene transcription, PRRT efficacy may be further improved due to enhanced SST2 expression.
Conference: 17th Annual ENETS Conference 2020 (2020)
Category: Basic Science - Genetics, epigenetics, miRNAs, Omics
Presenting Author: MSc Ilva Klomp
#2785 Inhibition of Cyclin Dependent Kinases Overcomes MYC-Driven Secondary Resistance to Everolimus in Digestive NETs
Introduction: Dysregulation of the mTOR pathway in digestive neuroendocrine tumours (d-NETs) led to the introduction of Everolimus (EVE) as treatment. EVE significantly increases PFS, but most patients acquire resistance, due to activation of feedback loops.
Conference: 17th Annual ENETS Conference 2020 (2020)
Category: Basic Science - Signaling pathways, receptors, biomarkers
Presenting Author: Md, PhD Gabriele Capurso
#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
#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, ...
#119 Valproic acid induces apoptosis-mediated cell death of the ileal carcinoid cell line GOT1
Introduction: Downregulation of tumor suppressor genes, evasion from apoptosis, and reduced differentiation are hallmarks of cancer that can be due to abnormal epigenetic control. Histone deacetylase (HDAC) is an enzyme involved in the deacetylation of histone proteins, resulting in chromatin remodelling and altered gene transcription. HDAC inhibitors are emerging as useful anticancer drugs.
Conference: 7th Annual ENETS Conference (2010)
Category: Basic
Presenting Author: Yvonne Arvidsson
Authors: Arvidsson Y, Ahlman H, Nilsson O, ...
#200 Genome-Wide MicroRNA Expression in Small Intestine Neuroendocrine Tumors (“Midgut carcinoids”): Upregulation of miRNA-182, miRNA-183 and Downregulation of miRNA-215
Introduction: MicroRNAs (miRs) may regulate cell proliferation, differentiation, apoptosis and function as tumor suppressors or oncogenes. MiR expression is not characterized in neuroendocrine midgut carcinoids.
Conference: 8th Annual ENETS Conference (2011)
Category: Basic
Presenting Author: PhD student Su-Chen Li
#462 Genome-Wide Expression Profiling Reveals Downregulation of OTP and CD44 and Upregulation of RET as Indicators of Poor Prognosis in Lung Carcinoids
Introduction: Lung carcinoids comprise a heterogeneous group of neuroendocrine tumors. Only few parameters have been identified that correlated with poor disease outcome, including 11q22-q25 deletions. New biomarkers are required to further improve diagnosis and prediction of prognosis.
Conference: 9th Annual ENETS Conference (2012)
Category: Basic
Presenting Author: MSc Dorian Swarts
#629 Targeting Chaperone Activity and Chaperone Expression in Human GEP-NET Cells Can Repress Their Proliferation and Sensitize Them to Chemotherapy
Introduction: New approaches for better treatment of gastroenteropancreatic neuroendocrine tumors (GEP-NETs) are acutely needed. Inhibitors of chaperone activity of heat shock protein 90 (Hsp90) seem to be promising agents but they upregulate cytoprotective chaperones Hsp70 and Hsp27.
Conference: 10th Annual ENETS Conference 2013 (2013)
Category: Basic Science - mTOR and other pathways, signalling, receptors
Presenting Author: Anna Demidkina
#976 Upregulation of Somatostatin Receptor Type 2 Expression in Neuroendocrine Tumors by Epigenetic Modulation
Introduction: The somatostatin receptor type 2 (sst2) is a target for treatment of neuroendocrine tumors (NETs). However, epigenetic mechanisms might account for the high variability in sst2 expression and treatment response between patients.
Conference: 11th Annual ENETS Conference 2014 (2014)
Category: Basic Science - Genetics, epigenetics, miRNAs
Presenting Author: MSc Marije J Veenstra
Keywords: GEP-NET, sst2, epigenetics