Alyssa Noll, Carrie Myers, Matthew C Biery, Michael Meechan, Sophie Tahiri, Asmitha Rajendran, Michael E Berens, Danyelle Paine, Sara Byron, Jiaming Zhang, Conrad Winter, Fiona Pakiam, Sarah E S Leary, Bonnie L Cole, Evangeline R Jackson, Matthew D Dun, Jessica B Foster, Myron K Evans, Siobhan S Pattwell, James M Olson, Nicholas A Vitanza
Constitutional mismatch repair deficiency (CMMRD) is a cancer predisposition syndrome associated with the development of hypermutant pediatric high-grade glioma, and confers a poor prognosis. While therapeutic histone deacetylase (HDAC) inhibition of diffuse intrinsic pontine glioma (DIPG) has been reported; here, we use a clinically relevant biopsy-derived hypermutant DIPG model (PBT-24FH) and a CRISPR-Cas9 induced genetic model to evaluate the efficacy of HDAC inhibition against hypermutant DIPG. We screened PBT-24FH cells for sensitivity to a panel of HDAC inhibitors (HDACis) in vitro, identifying two HDACis associated with low nanomolar IC50s, quisinostat (27 nM) and romidepsin (2 nM)...
September 2023: Neoplasia: An International Journal for Oncology Research