Everolimus resistance in clear cell renal cell carcinoma: miRNA-101 and HIF-2a as molecular triggers?

Data de publicação:

Autores da FMUP

  • Rui Manuel De Medeiros Melo Silva

    Autor

Participantes de fora da FMUP

  • Nogueira, I
  • Dias, F
  • Morais, M
  • Teixeira, AL

Abstract

Aim: The majority of clear cell renal cell carcinoma patients develop resistance to mTOR inhibitors. Materials & methods: As an in vitro model four cell lines were used: HKC-8, 786- O, RCC-FG-2 and an everolimus-resistant cell line (786-OR) established during this study. The quantification of miRNA-101 and HIF-2 alpha mRNA levels was assessed by real-time PCR. Results: We observed a significant decrease of miRNA-101 intracellular levels in 786-OR. However, this miRNA presented higher extracellular levels. Additionally, we found a significant increase of HIF-2 alpha in 786-OR. Conclusion: The circulating levels of miRNA-101 may be a potential biomarker of anti-mTOR therapy response and resistance prediction. Moreover, the resistance to mTOR inhibitors seems to be related with the overexpression of HIF-2 alpha.

Dados da publicação

ISSN/ISSNe:
1744-8301, 1479-6694

Future Oncology  Future Medicine Ltd.

Tipo:
Article
Páginas:
2361-2370

Citações Recebidas na Web of Science: 10

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Keywords

  • clear cell renal cell carcinoma; everolimus-resistance; HIF-2 alpha; miRNA-101; mTOR inhibitors

Financiamento

Proyectos asociados

Previsão das readmissões dos doentes à Urgência Pediátrica: aplicação das técnicas de aprendizagem supervisionadas.

Investigador Principal: Rui Manuel de Medeiros Melo Silva

Estudo Observacional Académico (UrgPediatr) . 2019

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