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Knockdown of long non-coding RNA HOTAIR reverses cisplatin resistance of ovarian cancer cells through inhibiting miR-138-5p-regulated EZH2 and SIRT1

Zhang, Yun ; Ai, Hao ; Fan, Xue ; Chen, Suxian ; Wang, Yadi ; Liu, Lili

Biological research, 2020-04, Vol.53 (1), p.18-18, Article 18 [Periódico revisado por pares]

England: BioMed Central Ltd

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Knockdown of long non-coding RNA HOTAIR reverses cisplatin resistance of ovarian cancer cells through inhibiting miR-138-5p-regulated EZH2 and SIRT1
Autor: Zhang, Yun ; Ai, Hao ; Fan, Xue ; Chen, Suxian ; Wang, Yadi ; Liu, Lili
Assuntos: Antineoplastic agents ; Antisense RNA ; Apoptosis ; Apoptosis - drug effects ; Binding sites ; BIOLOGY ; Biotechnology ; Cancer cells ; Cell Line, Tumor ; Chemoresistance ; Cisplatin ; Cisplatin - pharmacology ; DDP resistance ; Drug resistance ; Drug Resistance, Neoplasm - genetics ; Enhancer of Zeste Homolog 2 Protein - antagonists & inhibitors ; Female ; Flow cytometry ; Gene Expression Regulation, Neoplastic - drug effects ; Gene Knockout Techniques - methods ; HOTAIR ; Humans ; Liver cancer ; MicroRNAs ; MicroRNAs - antagonists & inhibitors ; miR-138-5p ; Non-coding RNA ; Ovarian cancer ; Ovarian Neoplasms - genetics ; Polycomb group proteins ; Prognosis ; Proteins ; Real-Time Polymerase Chain Reaction ; RNA, Long Noncoding - genetics ; siRNA ; SIRT1 protein ; Sirtuin 1 - antagonists & inhibitors ; Statistical analysis ; Transcription ; Tumor cell lines ; Tumors ; Up-Regulation
É parte de: Biological research, 2020-04, Vol.53 (1), p.18-18, Article 18
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Descrição: Cisplatin resistance (DDP-resistance) remains one of the major causes of poor prognosis in females with ovarian cancer. Long non-coding RNAs (lncRNAs) have been shown to participate in the regulation of cellular processes, including chemoresistance. The aim of this study was to explore the role of HOX transcript antisense RNA (HOTAIR) in DDP-resistant ovarian cancer cells. DDP-resistant ovarian cancer cell lines (SKOV3/DDP and A2780/DDP) were established. Real-time PCR, western blot, dual-luciferase reporter assay, and flow cytometry were then used to evaluate the effect of HOTAIR/miR-138-5p axis on chemoresistance of DDP-resistant ovarian cancer cells to DDP. We found that HOTAIR was upregulated in DDP-resistant cells, while miR-138-5p was downregulated. Knockdown of HOTAIR increased the expression of miR-138-5p in DDP-resistant cells and miR-138-5p is directly bound to HOTAIR. Upregulation of miR-138-5p induced by HOTAIR siRNA or by its mimics enhanced the chemosensitivity of DDP-resistant cells and decreased the expression of EZH2 (enhancer of zeste 2 polycomb repressive complex 2 subunit) and SIRT1 (sirtuin 1). Furthermore, the HOTAIR silencing-induced chemosensitivity of DDP-resistant cells was weakened by miR-138-5p inhibitor. These data demonstrate that HOTAIR acts as a sponge of miR-138-5p to prevent its binding to EZH2 and SIRT1, thereby promoting DDP-resistance of ovarian cancer cells. Our work will shed light on the development of therapeutic strategies for ovarian cancer treatment.
Editor: England: BioMed Central Ltd
Idioma: Inglês;Português

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Knockdown of long non-coding RNA HOTAIR reverses cisplatin resistance of ovarian cancer cells through inhibiting miR-138-5p-regulated EZH2 and SIRT1

Zhang, Yun ; Ai, Hao ; Fan, Xue ; Chen, Suxian ; Wang, Yadi ; Liu, Lili

England: BioMed Central Ltd

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