Abstract Library

#4396 Hypoxic microenvironment in neuroendocrine tumours

Introduction: The hypoxic microenvironment is a hallmark of many solid tumours, including neuroendocrine tumours (NETs). Hypoxia plays a crucial role in tumour progression, metastasis, and therapy resistance. However, the specific mechanisms by which hypoxia influences NET behaviour remain poorly understood.

Conference:

Presenting Author:

Authors: Xu L, Yu P, Ye M, Chen J, Tang Q,

Keywords: Neuroendocrine tumour, hypoxia, HIF-1α, VEGF, mTOR, PI3K/AKT, drug resistance, EMT,

#2269 Can Insulin-Like Growth Factor 1 (IGF-1), IGF-1 Receptor, Connective Tissue Growth Factor and Ki-67 Labelling Index Have a Prognostic Role in Pulmonary Carcinoids?

Introduction: Altered expression of Insulin-like Growth Factor-1 (IGF-1), its receptor (IGF-1R), Connective Tissue Growth Factor (CTGF) and Hypoxia Factor-1 (HIF-1), has been implicated in tumorigenesis. These factors have not been studied systematically in Pulmonary Carcinoids (PCs).

Conference: 15th Annual ENETSConcerence (2018)

Presenting Author:

Authors: Tsolakis A, Kanakis G, Grimelius G, Papaioannou D, Kaltsas G,

Keywords: IGF-1, IGF-1R, CTGF, HIF-1, Ki-67,

#911 Immunohistochemical Expression of Connective Tissue Growth Factor and Insulin-like Growth Factor-1 in Lung Carcinoids

Introduction: Several studies have shown altered expression of Insulin-like Growth Factor-1 (IGF-1) and its receptor (IGF-1R) in different types of cancers. Connective Tissue Growth Factor (CTGF) is triggered by Serotonin (5-HT) and Hypoxia Induced Factor 1 (HIF-1) and has been associated with tumor expansion and desmoplastic reaction in carcinoid tumors.

Conference: 11th Annual ENETSConcerence (2014)

Presenting Author:

Authors: Kanakis G, Grimelius L, Kaltsas G, Tsolakis A,

Keywords: lung, carcinoid, CTGF, IGF-1,

#581 Loss of Succinate Dehydrogenase (SDHB) Expression in Midgut Carcinoids as Prognostic Factor: a New Marker of Personalized Cancer Medicine in Neuroendocrine Tumors?

Introduction: Gene mutations of SDH complex have been involved in the pathogenesis of cancer cells. These mutations are often associated with loss of activity of SDH subunity B and overexpression of HIF-1a, which play a central role in angiogenesis.

Conference:

Presenting Author:

Authors: Milione M, Pusceddu S, Buzzoni R, Damato A, Meroni E,

Keywords: midgut, SDHB, immunohistochemistry,

#466 HIF-1a Determines the Metastatic Potential of the GEP-NET Cell Line BON-1

Introduction: Intratumoral hypoxia is a hallmark of solid tumor formation and a negative predictor of patient survival. Adaptation to hypoxia is mainly achieved by the transcription factor HIF-1a, which is upregulated in a diverse range of human and experimental tumors and their metastases. HIF-1a target genes have been implicated in the induction of invasion and metastasis. However, HIF-1a’s tumor-supporting action depends on cell type and microenvironment and the precise role of HIF-1a for the pathogenesis of neuroendocrine tumors (NET) is largely unknown.

Conference: 9th Annual ENETSConcerence (2012)

Presenting Author:

Authors: Freitag de Molina K, Rohwer N, Detjen K, Wiedenmann B, Cramer T,

Keywords: hypoxia, hif-1a, metastases,