ONECUT2 acts as a lineage plasticity driver in adenocarcinoma as well as neuroendocrine variants of prostate cancer.
Nucleic Acids Res
; 52(13): 7740-7760, 2024 Jul 22.
Article
em En
| MEDLINE
| ID: mdl-38932701
ABSTRACT
Androgen receptor- (AR-) indifference is a mechanism of resistance to hormonal therapy in prostate cancer (PC). Here we demonstrate that ONECUT2 (OC2) activates resistance through multiple drivers associated with adenocarcinoma, stem-like and neuroendocrine (NE) variants. Direct OC2 gene targets include the glucocorticoid receptor (GR; NR3C1) and the NE splicing factor SRRM4, which are key drivers of lineage plasticity. Thus, OC2, despite its previously described NEPC driver function, can indirectly activate a portion of the AR cistrome through epigenetic activation of GR. Mechanisms by which OC2 regulates gene expression include promoter binding, enhancement of genome-wide chromatin accessibility, and super-enhancer reprogramming. Pharmacologic inhibition of OC2 suppresses lineage plasticity reprogramming induced by the AR signaling inhibitor enzalutamide. These results demonstrate that OC2 activation promotes a range of drug resistance mechanisms associated with treatment-emergent lineage variation in PC and support enhanced efforts to therapeutically target OC2 as a means of suppressing treatment-resistant disease.
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Base de dados:
MEDLINE
Assunto principal:
Neoplasias da Próstata
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Benzamidas
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Adenocarcinoma
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Receptores Androgênicos
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Receptores de Glucocorticoides
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Regulação Neoplásica da Expressão Gênica
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Resistencia a Medicamentos Antineoplásicos
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Nitrilas
Idioma:
En
Ano de publicação:
2024
Tipo de documento:
Article