Abstract library

10 results for "N-cadherin".
#41 Immunohisochemical evaluation of EMT regulators, E- and N-cadherin in neuroendocrine Tumors of the Gastro-Entero-Pancreativ system
Introduction: Local tumor invasion represents the first step of the metastatic cascade of carcinomas, and requires changes in cell adhesion and migration properties of tumor cells. This biologic process is known as epithelial-mesenchymal transition (EMT). One key biochemical change associated with EMT is the loss of E-cadherin expression promoted by specific transcriptional repressors such as Snail, Slug, and Twist. Overexpression of EMT inducers increases other factors, such as FoxC2, although its role in EMT is poorly understood. Neuroendocrine tumors (NETs) of the gastroenteropancreatic (GEP) system, originated from the diffuse endocrine system, represent a heterogeneous group of tumors. Their prevalence has increased substantially over the past three decades, without substantial improvements in their clinical management, and their variable clinical course cannot be predicted by common clinicopathological parameters. Thus, new prognostic markers are urgently needed.
Conference: 7th Annual ENETS Conference (2010)
Category: Basic
Presenting Author: JOSE A. GALVÁN
#87 Alterations of E-cadherin, beta-catenin and caveolin-1 expression in gastroenteropancreatic neuroendocrine tumors
Introduction: Gastroenteropancreatic neuroendocrine tumors (GEP NETs) comprise a heterogeneous group of neoplasm with different histological patterns and biological behavior. Only limited information is available on immunohistochemical prognostic factors of disease. Alterations in the cell-cell adhesion system are closely associated with cell invasion and metastasis in many malignancies, including those of endocrine origin. Abnormal expression of E-cadherin and beta-catenin has been reported to play an important role in these processes. Caveolin-1 has recently been identified as a tumor metastasis modifier factor, which might increase the cell metastasis potential through the interaction with E-cadherin. However, the role of caveolin-1 in GEP NETs cell invasion remains unknown.
Conference: 7th Annual ENETS Conference (2010)
Category: Clinical
Presenting Author: Vera V Delektorskaya
#110 Slug represents an important regulator of E-cadherin expression in neuroendocrine tumor cells of the pancreas
Introduction: Neuroendocrine tumors of the pancreas form an inhomogenous group of epithelial neoplasms. They differ from other types of pancreatic cancers by showing an extended survival of patients, which is due to a mostly slow proliferation rate of the tumor. However, some of these neuroendocrine tumors are characterized by an early onset of metastases, which cannot be predicted by any available method. The epithelial to mesenchymal transition (EMT) represents a central part of cell migration and metastasis. During EMT, cells loosen their cellular contacts, leave the tissue, and become migrating single cells. One of the integral compounds of cell adhesion represents the E-cadherin adhesion module, which contains mostly E-cadherin and several catenins. A loss of this adhesion module is associated with tumor progression, migration and metastasis in many types of cancer.
Conference: 7th Annual ENETS Conference (2010)
Category: Basic
Presenting Author: Dr Alexander König
#801 Normal Gastrointestinal Neuroendocrine Cells Lack E-cadherin
Introduction: E-cadherin plays a crucial role in the adhesion between epithelial cells and thus epithelial integrity. Moreover, germ line mutations in the E-cadherin gene (CDH1) causing loss of E-cadherin function (adhesion) leads to hereditary gastric cancer of the diffuse type, according to Laurén. Even sporadic gastric carcinomas of the diffuse type often lose E-cadherin expression due to mutations. Lack of E-cadherin has been recorded at an early phase in such carcinomas.
Conference: 11th Annual ENETS Conference (2014)
Category: Basic Science - mTOR and other pathways, signalling, receptors
Presenting Author: Øyvind Hauso
#988 Vimentin and E-cadherin Expression in Primary Neuroendocrine Tumors by Grade
Introduction: The prognostic evaluation of radically removed neuroendocrine tumors (NETs) represents an important issue. The cardinal tumor features can be studied as biomarkers.
Conference: 11th Annual ENETS Conference (2014)
Category: Biomarkers
Presenting Author: Andrejs Vanags
Keywords: NETs, vimentin, E-cadherin
#191 Immunohistochemical Analysis of Epithelial-Mesenchymal Transition Markers in Neuroendocrine Tumors of the Lung
Introduction: The increased motility and invasiveness of cancer cells in the first phase of metastasis are reminiscent of epithelial–mesenchymal transition (EMT) during embryonic development.
Conference: 8th Annual ENETS Conference (2011)
Category: Clinical
Presenting Author: Jose Galván
#508 Differential Expression of Markers in a Midgut Carcinoid Tissue Microarray
Introduction: Molecular mechanisms driving well-differentiated midgut carcinoid (MGC) tumors are not well-established. To pursue higher resolution tumor diagnostics, we studied a panel of markers for their expression in MGC, including: serotonin, FGF2, b-catenin, and E-cadherin, in primary, lymph node, and liver metastases.
Conference: 9th Annual ENETS Conference (2012)
Category: Basic
Presenting Author: Eric Liu
Authors: Liu E, Mikhitarian K, Revetta F, Shi C, ...
#558 MANECs Among Colorectal Signet Ring Cell Carcinomas
Introduction: The mixed adenoneuroendocrine carcinomas (MANEC, WHO 2010) are neoplasms with heterogeneous morphology, whose mixed nature may be difficult to recognize.
Conference: 9th Annual ENETS Conference (2012)
Category: Basic
Presenting Author: MD Gratiana Hermann
#882 Gene Expression Characterization of Gastroenteropancreatic Neuroendocrine Tumors [GEPNETS: Gastrointestinal and Pancreatic NETs (GINETs and pNETs)] and Their Correlation with Clinical Factors and Tumor Behavior
Introduction: GEP-NETs are a heterogenous group of tumors with different molecular backgrounds and clinical outcome.
Conference: 11th Annual ENETS Conference (2014)
Category: Basic Science - Genetics, epigenetics, miRNAs
Presenting Author: J A Díaz Pérez
#986 Expression of the Truncated Somatostatin Receptor Variant Sstr5TMD4 in Medullary Thyroid Carcinoma
Introduction: Medullary thyroid carcinoma (MTC) is a rare tumor originating from thyroid parafollicular C cell. The only available treatment is surgical resection, which is not always feasible. Somatostatin and its receptors are expressed both in normal human thyroid C cells and in MTC, but their role has not been fully elucidated. The discovery of a truncated isoform of Sstr5, Sstr5TMD4, associated with increased invasiveness and aggressiveness in breast cancer, has opened new insight in the role of Sstr in cancers.
Conference: 11th Annual ENETS Conference (2014)
Category: Basic Science - mTOR and other pathways, signalling, receptors
Presenting Author: Dr Daniela Molè
Keywords: MTC, SSTR5TMD4