BET and CDK Inhibition Reveal Differences in the Proliferation Control of Sympathetic Ganglion Neuroblasts and Adrenal Chromaffin Cells

Neuroblastoma arising from the adrenal differ from ganglionic neuroblastoma both genetically and clinically, with adrenal tumors being associated with a more severe prognosis. The different tumor properties may be linked to specific tumor founder cells in adrenal and sympathetic ganglia. To address...

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Bibliographic Details
Published in:Cancers 2022-06, Vol.14 (11), p.2755
Main Authors: Sriha, Jessica, Louis-Brennetot, Caroline, Pierre-Eugène, Cécile, Baulande, Sylvain, Raynal, Virginie, Kramdi, Amira, Adameyko, Igor, Ernsberger, Uwe, Deller, Thomas, Delattre, Olivier, Janoueix-Lerosey, Isabelle, Rohrer, Hermann
Format: Article
Language:English
Subjects:
Bet protein
Cell proliferation
Children
Chromaffin cells
Cyclin-dependent kinase
Cyclin-dependent kinases
Epigenetics
Gene expression
Glucose
Insulin-like growth factor I
Kinases
Medical prognosis
Medicin och hälsovetenskap
Mutation
Neuroblastoma
Neuroblasts
Neurons
Signal transduction
Sympathetic ganglia
Sympathetic nervous system
Tumors
Wnt protein
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Summary:Neuroblastoma arising from the adrenal differ from ganglionic neuroblastoma both genetically and clinically, with adrenal tumors being associated with a more severe prognosis. The different tumor properties may be linked to specific tumor founder cells in adrenal and sympathetic ganglia. To address this question, we first set up cultures of mouse sympathetic neuroblasts and adrenal chromaffin cells. These cultures were then treated with various proliferation inhibitors to identify lineage-specific responses. We show that neuroblast and chromaffin cell proliferation was affected by WNT, ALK, IGF1, and PRC2/EZH2 signaling inhibitors to a similar extent. However, differential effects were observed in response to bromodomain and extraterminal (BET) protein inhibitors (JQ1, GSK1324726A) and to the CDK-7 inhibitor THZ1, with BET inhibitors preferentially affecting chromaffin cells, and THZ1 preferentially affecting neuroblasts. The differential dependence of chromaffin cells and neuroblasts on BET and CDK signaling may indicate different mechanisms during tumor initiation in sympathetic ganglia and adrenal.
ISSN:2072-6694
2072-6694
DOI:10.3390/cancers14112755