Combating castration-resistant prostate cancer by co-targeting the epigenetic regulators EZH2 and HDAC

While screening and early detection have reduced mortality from prostate cancer, castration-resistant disease (CRPC) is still incurable. Here, we report that combined EZH2/HDAC inhibitors potently kill CRPCs and cause dramatic tumor regression in aggressive human and mouse CRPC models. Notably, EZH2...

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Main Authors: Amy E. Schade, Ryan Kuzmickas, Carrie L. Rodriguez, Kaia Mattioli, Miriam Enos, Alycia Gardner, Karen Cichowski
Format: Article
Language:English
Published: Public Library of Science (PLoS) 2023-04-01
Series:PLoS Biology
Online Access:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10138213/?tool=EBI
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author Amy E. Schade
Ryan Kuzmickas
Carrie L. Rodriguez
Kaia Mattioli
Miriam Enos
Alycia Gardner
Karen Cichowski
author_facet Amy E. Schade
Ryan Kuzmickas
Carrie L. Rodriguez
Kaia Mattioli
Miriam Enos
Alycia Gardner
Karen Cichowski
author_sort Amy E. Schade
collection DOAJ
description While screening and early detection have reduced mortality from prostate cancer, castration-resistant disease (CRPC) is still incurable. Here, we report that combined EZH2/HDAC inhibitors potently kill CRPCs and cause dramatic tumor regression in aggressive human and mouse CRPC models. Notably, EZH2 and HDAC both transmit transcriptional repressive signals: regulating histone H3 methylation and histone deacetylation, respectively. Accordingly, we show that suppression of both EZH2 and HDAC are required to derepress/induce a subset of EZH2 targets, by promoting the sequential demethylation and acetylation of histone H3. Moreover, we find that the induction of one of these targets, ATF3, which is a broad stress response gene, is critical for the therapeutic response. Importantly, in human tumors, low ATF3 levels are associated with decreased survival. Moreover, EZH2- and ATF3-mediated transcriptional programs inversely correlate and are most highly/lowly expressed in advanced disease. Together, these studies identify a promising therapeutic strategy for CRPC and suggest that these two major epigenetic regulators buffer prostate cancers from a lethal response to cellular stresses, thereby conferring a tractable therapeutic vulnerability. Epigenetic, transcriptional, and functional studies show that two major epigenetic regulators (EZH2 and HDAC) buffer advanced prostate cancer from lethal stress responses, revealing a promising combination therapy for castration-resistant disease.
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spelling doaj.art-fe482346ab9d432395397099fc6b4c1d2023-05-01T05:30:51ZengPublic Library of Science (PLoS)PLoS Biology1544-91731545-78852023-04-01214Combating castration-resistant prostate cancer by co-targeting the epigenetic regulators EZH2 and HDACAmy E. SchadeRyan KuzmickasCarrie L. RodriguezKaia MattioliMiriam EnosAlycia GardnerKaren CichowskiWhile screening and early detection have reduced mortality from prostate cancer, castration-resistant disease (CRPC) is still incurable. Here, we report that combined EZH2/HDAC inhibitors potently kill CRPCs and cause dramatic tumor regression in aggressive human and mouse CRPC models. Notably, EZH2 and HDAC both transmit transcriptional repressive signals: regulating histone H3 methylation and histone deacetylation, respectively. Accordingly, we show that suppression of both EZH2 and HDAC are required to derepress/induce a subset of EZH2 targets, by promoting the sequential demethylation and acetylation of histone H3. Moreover, we find that the induction of one of these targets, ATF3, which is a broad stress response gene, is critical for the therapeutic response. Importantly, in human tumors, low ATF3 levels are associated with decreased survival. Moreover, EZH2- and ATF3-mediated transcriptional programs inversely correlate and are most highly/lowly expressed in advanced disease. Together, these studies identify a promising therapeutic strategy for CRPC and suggest that these two major epigenetic regulators buffer prostate cancers from a lethal response to cellular stresses, thereby conferring a tractable therapeutic vulnerability. Epigenetic, transcriptional, and functional studies show that two major epigenetic regulators (EZH2 and HDAC) buffer advanced prostate cancer from lethal stress responses, revealing a promising combination therapy for castration-resistant disease.https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10138213/?tool=EBI
spellingShingle Amy E. Schade
Ryan Kuzmickas
Carrie L. Rodriguez
Kaia Mattioli
Miriam Enos
Alycia Gardner
Karen Cichowski
Combating castration-resistant prostate cancer by co-targeting the epigenetic regulators EZH2 and HDAC
PLoS Biology
title Combating castration-resistant prostate cancer by co-targeting the epigenetic regulators EZH2 and HDAC
title_full Combating castration-resistant prostate cancer by co-targeting the epigenetic regulators EZH2 and HDAC
title_fullStr Combating castration-resistant prostate cancer by co-targeting the epigenetic regulators EZH2 and HDAC
title_full_unstemmed Combating castration-resistant prostate cancer by co-targeting the epigenetic regulators EZH2 and HDAC
title_short Combating castration-resistant prostate cancer by co-targeting the epigenetic regulators EZH2 and HDAC
title_sort combating castration resistant prostate cancer by co targeting the epigenetic regulators ezh2 and hdac
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10138213/?tool=EBI
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