MALAT1/miR-101-3p/MCL1 axis mediates cisplatin resistance in lung cancer

Oncotarget
Huaqi WangGuoqiang Zhao

Abstract

In this study, we investigated the mechanism by which lncRNA metastasis-associated lung adenocarcinoma transcript 1 (MALAT1) mediates cisplatin resistance in lung cancer. Lung cancer patients with high MALAT1 levels were associated with cisplatin resistance and low overall survival. Moreover, cisplatin-resistant A549/DDP cells showed higher MALAT1 expression than cisplatin-sensitive lung cancer cells (A549, H460, H1299 and SPC-A1). Dual luciferase reporter and RNA immunoprecipitation assays showed direct binding of miR-101-3p to MALAT1. MALAT1 knockdown in lung cancer cells resulted in miR-101-3p upregulation and increased cisplatin sensitivity. In addition, miR-101-3p decreased myeloid cell leukemia 1 (MCL1) expression by binding to the 3'-untranslated region (3'-UTR) of its mRNA. These results demonstrate that MALAT1/miR-101-3p/MCL1 signaling underlies cisplatin resistance in lung cancer.

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Citations

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Methods Mentioned

BETA
Flow cytometry
xenograft
transfection
immunoprecipitation
RIP
Assay
PCR

Software Mentioned

Targetscan
SPSS
DIANA
- LncBase
IPP
LncBase

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