p16 methylation is a potential predictive marker for abemaciclib sensitivity in gastric cancer.
Biochem Pharmacol
; 183: 114320, 2021 01.
Article
em En
| MEDLINE
| ID: mdl-33161023
ABSTRACT
Cell cycle control is often disrupted in gastric cancer (GC), making it an attractive therapeutic target. Abemaciclib is a specific CDK4/6 inhibitor that has been shown to improve treatment efficacy in hormone receptor-positive advanced breast cancer; however, its potential therapeutic value and predictive markers have not yet been revealed in GC. In this study, we investigated the efficacy of abemaciclib using preclinical GC models representing defined molecular subtypes from The Cancer Genome Atlas. In these 49 GC cell lines, Epstein-Barr virus (EBV) and high microsatellite instability (MSI-H)-type cell lines were p16 methylated and sensitive to abemaciclib; further, genomically stable (GS), and chromosomal instability (CIN)-type cell lines with p16 methylation and intact Rb were also found to be responsive. In addition, we found that GC patients with p16 methylation often displayed a poor prognosis. Collectively, these data provide a foundation for clinical trials to assess the therapeutic efficacy of abemaciclib in GC and suggest that p16 methylation could be used as a predictive marker to identify patients with GC who may benefit from abemaciclib-based therapies.
Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Neoplasias Gástricas
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Benzimidazóis
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Resistencia a Medicamentos Antineoplásicos
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Metilação de DNA
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Genes p16
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Aminopiridinas
Tipo de estudo:
Diagnostic_studies
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Prognostic_studies
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Risk_factors_studies
Limite:
Animals
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Female
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Humans
Idioma:
En
Ano de publicação:
2021
Tipo de documento:
Article