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Head and neck paragangliomas

ABSTRACT: This SuperSeries is composed of the SubSeries listed below. Refer to individual Series

ORGANISM(S): Homo sapiens

SUBMITTER: Renato Mariani-Costantini

PROVIDER: E-GEOD-49615 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Integrative genetic, epigenetic and pathological analysis of paraganglioma reveals complex dysregulation of NOTCH signaling.

Cama Alessandro A Verginelli Fabio F Lotti Lavinia Vittoria LV Napolitano Francesco F Morgano Annalisa A D'Orazio Andria A Vacca Michele M Perconti Silvia S Pepe Felice F Romani Federico F Vitullo Francesca F di Lella Filippo F Visone Rosa R Mannelli Massimo M Neumann Hartmut P H HP Raiconi Giancarlo G Paties Carlo C Moschetta Antonio A Tagliaferri Roberto R Veronese Angelo A Sanna Mario M Mariani-Costantini Renato R

Acta neuropathologica 20130818 4

Head and neck paragangliomas, rare neoplasms of the paraganglia composed of nests of neurosecretory and glial cells embedded in vascular stroma, provide a remarkable example of organoid tumor architecture. To identify genes and pathways commonly deregulated in head and neck paraganglioma, we integrated high-density genome-wide copy number variation (CNV) analysis with microRNA and immunomorphological studies. Gene-centric CNV analysis of 24 cases identified a list of 104 genes most significantly ...[more]

PMID: 23955600

Similar Datasets

High-density genome-wide copy number variation (CNV) in human head and neck paragangliomas.

Project description:Gene-centric CNV analysis of 24 individual paraganglioma cases identified a list of 104 genes most significantly targeted by tumor-associated alterations. The NOTCH signaling pathway was the most significantly enriched term in the list. Overexpression of the relevant NOTCH pathway proteins in sustentacular (glial), chief (neuroendocrine) and endothelial cells was confirmed by immunomorphological studies in 47 paragangliomas, including CNV-tested cases. NOTCH upregulation was observed also in cases with no evidence of CNVs at NOTCH signaling genes, suggesting altered epigenetic modulation of the pathway. Notably, this was confirmed by microRNA expression analysis, that showed tumor-associated downregulation of the miR-200s and miR-34s families, correlated to NOTCH signaling and directly targeting NOTCH1. Total DNA from paraganglioma sample compared to total DNA from paired blood sample.

2013-08-21 | E-GEOD-49614 | biostudies-arrayexpress

Genome-wide analysis of the miR profile in human head and neck paraganglioma vs. Jacobson's (tympanic) nerve and SH-SY5Y neuroblastoma cells

Project description:The aim of the study was to assess whether changes in the expression of miRs could be implicated in the modulation of the NOTCH pathway in head and neck paragangliomas. Several miRs, notably including families (miR-34s, miR-200s) that target the NOTCH signaling pathway, resulted differentially expressed in paragangliomas compared to the reference normal tissue, i.e., Jacobson's nerve. Total RNA from paraganglioma samples compared to total RNA from Jacobson's nerves (normal controls, chosen because Jacobson's nerve is a frequent site of origin of tympanic paraganglioma) and from SH-SY5Y cells (chosen based on their sympathoadrenal origin).

2013-08-21 | E-GEOD-49190 | biostudies-arrayexpress

GE/miRNA expression profile of Human Epicardial Adipose Tissue (EAT) and Subcutaneous Adipose Tissue (SAT) in Patients with Coronary Artery Disease (CAD) vs. Controls (CTRL)

Project description:This SuperSeries is composed of the SubSeries listed below. Refer to individual Series

2015-11-22 | E-GEOD-64566 | biostudies-arrayexpress

GE/miRNA expression profile of Human Epicardial Adipose Tissue (EAT) and Subcutaneous Adipose Tissue (SAT) in Patients with Coronary Artery Disease (CAD) vs. Controls (CTRL) - PART 1 - Genes

Project description:Gene expression profiles of Human EAT vs. SAT (CTRL & CAD). The aim of the present study was to assess a gene expression chart characterizing EAT vs. SAT, and CAD vs. CTRL. Results provide the information that EAT is characterized by a differential expression of different genes when compared to its reference tissue (SAT), and that EAT is characterized by specific gene expression changes in patients with CAD. RNA obtained from EAT & SAT of the same patients (paired samples). Comparisons: EAT vs. SAT (paired samples) & CAD vs. CTRL

2015-11-22 | E-GEOD-64554 | biostudies-arrayexpress

GE/miRNA expression profile of Human Epicardial Adipose Tissue (EAT) and Subcutaneous Adipose Tissue (SAT) in Patients with Coronary Artery Disease (CAD) vs. Controls (CTRL) - PART 2 - miRNA

Project description:miRNA expression profiles of Human EAT vs. SAT (CTRL & CAD). The aim of the present study was to assess a miRNA expression chart characterizing EAT vs. SAT, and CAD vs. CTRL. Results provide the information that EAT is characterized by a differential expression of different miRNA when compared to its reference tissue (SAT), and that EAT is characterized by specific miRNA expression changes in patients with CAD. RNA obtained from EAT & SAT of the same patients (paired samples). Comparisons: EAT vs. SAT (paired samples) & CAD vs. CTRL

2015-11-22 | E-GEOD-64563 | biostudies-arrayexpress

GE/miRNA expression profile of PBMCs in healthy subjects and MS patients after extra virgin olive oil (EVOO) intake

Project description:This SuperSeries is composed of the SubSeries listed below. Refer to individual Series

2016-07-19 | E-GEOD-75027 | biostudies-arrayexpress

miRNA expression profile of PBMCs in healthy subjects after extra virgin olive oil (EVOO) intake - Part 2 (Controls)

Project description:miRNA expression profiles of PBMCs in healthy subjects following extra virgin olive oil intake. The aim of the present study was to investigate the whole-genome gene and miRNA profiles of PBMCs after EVOO intake. Results provide the information of changes in PBMPs transcriptome following EVOO intake. RNA obtained from PBMCs of the same patients before and after extra virgin olive oil intake (paired samples). Comparisons: T0 vs. T1 (paired samples) - Controls

2016-07-19 | E-GEOD-75026 | biostudies-arrayexpress

Gene expression profile of PBMCs in healthy subjects and MS Patients after extra virgin olive oil (EVOO) intake - Part 1 (Controls)

Project description:Gene expression profiles of PBMCs in healthy subjects following extra virgin olive oil intake. The aim of the present study was to investigate the whole-genome gene and miRNA profiles of after EVOO intake. Results provide the information of changes in PBMPs transcriptome following EVOO intake. RNA obtained from PBMCs of the same subjects before and after extra virgin olive oil intake (paired samples). Comparisons: T0 vs. T1 (paired samples) - Controls

2016-07-19 | E-GEOD-75025 | biostudies-arrayexpress

Genome-wide analysis expression of ileum samples from PGC-1β fl/? and iKOPGC-1β

Project description:Analysis of metabolic pathway gene expression. The hypothesis tested in the present study is to assess mRNA level changes in metabolic genes in enterocytes from intestine specific PGC-1β konckout mice. Total RNA obtained from ileum samples from IKOPGC-1β mice was compared to the total RNA extracted from their wild-type littermates.

2015-03-01 | E-GEOD-61640 | biostudies-arrayexpress

Genome-wide analysis expression of ileum tumor samples from FVBN/APCmin and iPGC-1β/APCmin

Project description:Analysis of metabolic pathway gene expression. The hypothesis tested in the present study is to assess mRNA level changes in metabolic genes in intestinal tumors from APCmin mice overexpressing PGC-1β specifically in the intestine. Total RNA obtained from ileum tumor samples from iPGC-1β/APCmin mice was compared to the total RNA extracted from FVBN/APCmin mice.

2015-03-01 | E-GEOD-61642 | biostudies-arrayexpress

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