KDM5 Histone Demethylase Activity Links Cellular Transcriptomic Heterogeneity to Therapeutic Resistance.
Cancer Cell
; 34(6): 939-953.e9, 2018 12 10.
Article
em En
| MEDLINE
| ID: mdl-30472020
Members of the KDM5 histone H3 lysine 4 demethylase family are associated with therapeutic resistance, including endocrine resistance in breast cancer, but the underlying mechanism is poorly defined. Here we show that genetic deletion of KDM5A/B or inhibition of KDM5 activity increases sensitivity to anti-estrogens by modulating estrogen receptor (ER) signaling and by decreasing cellular transcriptomic heterogeneity. Higher KDM5B expression levels are associated with higher transcriptomic heterogeneity and poor prognosis in ER+ breast tumors. Single-cell RNA sequencing, cellular barcoding, and mathematical modeling demonstrate that endocrine resistance is due to selection for pre-existing genetically distinct cells, while KDM5 inhibitor resistance is acquired. Our findings highlight the importance of cellular phenotypic heterogeneity in therapeutic resistance and identify KDM5A/B as key regulators of this process.
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Assunto principal:
Proteínas Repressoras
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Neoplasias da Mama
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Proteínas Nucleares
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Resistencia a Medicamentos Antineoplásicos
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Histona Desmetilases com o Domínio Jumonji
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Proteína 2 de Ligação ao Retinoblastoma
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Transcriptoma
Idioma:
En
Ano de publicação:
2018
Tipo de documento:
Article