Abstract Library

#4590 Association of SST5TMD4 and SST5TMD5 expression with metastasis and poor prognostic markers in gastroenteropancreatic neuroendocrine tumours

Introduction: The expression of the somatostatin receptor isoform SST5TMD4 is linked to poorer prognosis in somatotropinomas, as well as in breast and thyroid cancers, and it is notably overexpressed in gastroenteropancreatic neuroendocrine tumours (GEP-NETs).

Conference:

Presenting Author: Pedraza-Arevalo S

Authors: Pedraza-Arévalo S, Díaz-Pérez J, Garcia-Carbonero R, Villabona C, Capdevila J,

Keywords: GEP-NET, somatostatin, truncated receptor, metastasis,

#2141 Potential Role of SST5TMD4-Derived Peptides in the Malignancy of Neuroendocrine Tumors and Other Endocrine-Related Cancer Cells

Introduction: Extracellular fragments derived from membrane receptors can play relevant functional roles in certain tumoral pathologies and could provide novel diagnostic or therapeutic tools. We have identified a novel truncated somatostatin receptor type 5 variant, sst5TMD4, which is overexpressed and functionally active in different endocrine-related cancers, including neuroendocrine tumors (NETs). Interestingly, sst5TMD4 has 4 transmembrane domains and its C-terminal tail is consequently exposed towards the extracellular matrix, and could, therefore, be the substrate for proteolytic enzymes.

Conference: 15th Annual ENETSConcerence (2018)

Presenting Author:

Authors: Pedraza-Arévalo S, Del Río-Moreno M, Alors-Pérez E, Castaño J, Luque R,

Keywords: sst5TMD4, derived peptides, malignancy, endocrine-related cancer,

#1772 Expression of Truncated Functional Subtype 5 Somatostatin Receptor Variant (sst5TMD4) in GEP-NETs and Association with Relevant Pathways Involved in NET Tumorigenesis

Introduction: Sst5TMD4, which is derived from a non-canonical splicing process of sst5 receptor, is overexpressed in several endocrine tumors and associated with a worse prognosis.

Conference: 14th Annual ENETSConcerence (2017)

Presenting Author:

Authors: Diaz Perez A, Martínez-Fuentes A, García-Carbonero R, Luque R, Jimenez-Fonseca P,

Keywords: somatostatin receptor, neuroendocrine tumors,

#1566 Splicing Dysregulation Impacts on Neuroendocrine Tumors: Evidence from Altered Spliceosoma Components and Somatostatin and Ghrelin Systems.

Introduction: Splicing is an emerging cancer hallmark influencing multiple tumor cell (dys)functions. We have shown that aberrantly spliced variants of somatostatin receptor subtype 5 (sst5TMD4) and of the pleiotropic neuropeptide ghrelin (in1ghrelin) are linked to poor prognosis in gastroenteropancreatic neuroendocrine tumors (GEPNETs) and may enhance their aggressiveness features.

Conference: 13th Annual ENETSConcerence (2016)

Presenting Author: Castaño J

Authors: Castaño J, Pedraza-Arevalo S, Herrea-Martinez A, Del Río-Moreno M, Sánchez-Sánchez R,

Keywords: Splicing,