ADAR1-mediated RNA-editing of 3'UTRs in breast cancer
Biol. Res
; 51: 36, 2018. graf
Artigo
em Inglês
| LILACS
| ID: biblio-983940
Biblioteca responsável:
CL1.1
ABSTRACT
BACKGROUND:
Whole transcriptome RNA variant analyses have shown that adenosine deaminases acting on RNA ( ADAR ) enzymes modify a large proportion of cellular RNAs, contributing to transcriptome diversity and cancer evolution. Despite the advances in the understanding of ADAR function in breast cancer, ADAR RNA editing functional consequences are not fully addressed.RESULTS:
We characterized A to G(I) mRNA editing in 81 breast cell lines, showing increased editing at 3'UTR and exonic regions in breast cancer cells compared to immortalized non-malignant cell lines. In addition, tumors from the BRCA TCGA cohort show a 24% increase in editing over normal breast samples when looking at 571 well-characterized UTRs targeted by ADAR1. Basal-like subtype breast cancer patients with high level of ADAR1 mRNA expression shows a worse clinical outcome and increased editing in their 3'UTRs. Interestingly, editing was particularly increased in the 3'UTRs of ATM, GINS4 and POLH transcripts in tumors, which correlated with their mRNA expression. We confirmed the role of ADAR1 in this regulation using a shRNA in a breast cancer cell line (ZR-75-1).CONCLUSIONS:
Altogether, these results revealed a significant association between the mRNA editing in genes related to cancer-relevant pathways and clinical outcomes, suggesting an important role of ADAR1 expression and function in breast cancer.
Texto completo:
Disponível
Coleções:
Bases de dados internacionais
Base de dados:
LILACS
Assunto principal:
Neoplasias da Mama
/
Adenosina Desaminase
/
Proteínas de Ligação a RNA
/
Edição de RNA
/
Regiões não Traduzidas
/
Estabilidade de RNA
Limite:
Feminino
/
Humanos
Idioma:
Inglês
Revista:
Biol. Res
Assunto da revista:
Biologia
Ano de publicação:
2018
Tipo de documento:
Artigo
País de afiliação:
Chile
/
Estados Unidos
Instituição/País de afiliação:
Center of Excellence in Precision Medicine/CL
/
Instituto Nacional del Cáncer/CL
/
Universidad de Chile/CL
/
University of California/US