Abstract Library

#4568 Investigating the dual role of SNW1 in splicing and transcription to understand pancreatic neuroendocrine tumour progression

Introduction: Pancreatic neuroendocrine tumours (PanNETs) are classified into grades (G1-G3) based on mitotic rate, with higher grades exhibiting increased dedifferentiation and invasiveness. Despite the clinical significance of PanNETs progression, the underlying mechanisms remain largely unexplored. We have previously reported that altered alternative splicing plays an essential role in PanNETs progression, where SNW1, a key regulator of splicing and transcription, was found to be overexpressed in tumour tissue, correlating with higher grade and recurrence risk.

Conference:

Presenting Author: González-Pérez C

Authors: González-Pérez C, Simón-Lesnyak M, Blázquez-Encinas R, García Vioque V, Moreno Montilla M,

Keywords: pancreas, neuroendocrine tumour, progression, SNW1, splicing,

#4304 Co-targeting the Endocannabinoid System (ES) and mTOR in NEN potentiates their anti-tumour effect via unique metabolic changes

Introduction: The current treatment of neuroendocrine neoplasms (NEN) has limited efficacy, highlighting the need for novel therapeutic approaches. We have previously shown the potential therapeutic benefit when combining ES blocking with Everolimus (Eve).

Conference:

Presenting Author: Avniel-Polak S

Authors: Avniel-Polak S, Kogot-Levin A, Abramovich I, Agranovich B, Polak D,

Keywords: Neuroendocrine neoplasm, Endocannabinoid system, Everolimus, metabolic Changes, metabolomics,

#3664 Cannabis and endocannabinoid system modulation as novel strategies to improve conventional treatment outcomes and overcome drug resistance in neuroendocrine neoplasms in-vitro & in-vivo models

Introduction: NENs are treated with systemic therapies with limited non-curable efficacy due to development of drug resistance (DR). While cannabis and its extracts (cannabinoids, CE) are mostly used for their palliation properties, increasing evidence suggests an anticancer trait via several cellular pathways. Limited data exist on cannabis and the endocannabinoid system (ECS) in NENs and their impact on the development of DR.

Conference:

Presenting Author: Avniel-Polak S

Authors: Avniel- Polak S, Polak D, Drier Y, Grozinsky-Glasberg S,

Keywords: neuroendocrine neoplasm, cannabinoids, cannabis extracts, endocannabinoid system, endocannabinoid receptors, everolimus,

#3326 Drug sensitivity profiles of PNET, SBNET and NEC spheroids

Introduction: Neuroendocrine neoplasms (NENs) are rare cancers that arise from neuroendocrine cells. NENs are classified as well-differentiated neuroendocrine tumors (NETs) and poorly differentiated neuroendocrine carcinomas (NECs). Few mutations have been identified for NETs from the small bowel (SBNETs) and pancreas (PNETs). SBNETs and PNETs are generally slow growing but they commonly metastasize to the liver and can become aggressive cancers. NECs often harbour mutations in key cell cycle genes (TP53 and RB) and are highly proliferative. Little is known about the drug sensitivity profile of SBNET, PNET and NECs due to the lack of cellular and animal models of these malignancies. Recently, we have developed a protocol to culture NET and NEC cells from patient tumors as patient-derived spheroids and showed that they express NEN markers.

Conference: 18th Annual ENETS Concerence (2021)

Presenting Author: Ear P

Authors: Ear P, Tran C, Li G, Abusada E, Mudd J,

Keywords: PNET, SBNET, NEC, drug testing, spheroids,

#2980 Metabolic Dysregulation and Circadian Clock in Cellular Models of Neuroendocrine Tumors

Introduction: The circadian clock genes encode transcription factors whose interaction with nuclear receptors allows the regulation of cellular metabolism.The invalidation of the genes of the clock core is associated with the development of many endocrine diseases including neuroendocrine cancer. Recently, the family of transcriptional coactivators PGC-1a has been identified as a key element in the integration of cellular metabolic state with the circadian clock. PRC, as a member of the PGC-1 family, was able to interact with several transcription factors, including the CLOCK factor. The specific induction of this PRC factor by the cell cycle, to modulate the energy function, the MAPkinase pathway and the expression of microRNAs, makes it a key factor in the metabolic adaptation of cancer cells.

Conference: 17th Annual ENETSConcerence (2020)

Presenting Author: Savagner F

Authors: Savagner F, Le Pennec S,

Keywords: Metabolism, Circadian clock, cell models,