Loss of DAXX/ATRX Protein Expression Results in Ischemia Resistance and Radiation Sensitivity in Pancreatic Neuroendocrine Tumor Cells and Is Associated with Improved Response to Trans-Arterial Radioembolization.

ABSTRACT:

Introduction

Metastatic liver pancreatic neuroendocrine tumors (PNETs) can be treated with ischemia-based trans-arterial embolization/trans-arterial chemo-embolization or radiation-based trans-arterial radioembolization (TARE). Guidelines for treatment selection are limited. The purpose of this study was to measure the effect of loss of DAXX/ATRX protein expression on ischemia and radiation sensitivity in Bon-1 and QGP-1 cells, and to compare TARE response in PNETs with and without a DAXX/ATRX mutation.

Methods

This was a laboratory investigation and retrospective review of an institutional database of TARE-treated PNET patients. Ischemia and radiation sensitivity were tested on Bon-1 and QGP-1 cells and CRISPR-generated DAXX (C16/C45) and ATRX (QAX12/QAX24) knockouts. Post-

SUBMITTER: Puzzuoli 

PROVIDER: S-EPMC12421922 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature