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High Expression of Long Noncoding RNA HOTAIRM1 is Associated with the Proliferation and Migration in Pancreatic Ductal Adenocarcinoma

  • Yongyun Luo
  • Yaqin He
  • Xiaoping Ye
  • Jianjun Song
  • Qi Wang
  • Yukui Li
  • Xiaoliang Xie
Original Article
  • 57 Downloads

Abstract

Pancreatic ductal adenocarcinoma (PDAC) is an incurable malignancy. Long noncoding RNA (LncRNA) HOTAIRM1 (HOX antisense intergenic RNA myeloid 1) has been shown to play important roles in the progression of several type cancers. However, the exact role of HOTAIRM1 in PDAC development remains largely unknown. This study aims to evaluate the potential function of HOTAIRM1 in the development and progress of PDAC. HOTAIRM1 expression was measured by RT-qPCR in forty seven paired human PDAC tissues and five PDAC cell lines. SW1990 and PANC-1 cells were transfected with siHOTAIRM1 to achieve HOTAIRM1 silence. MTT assay and colony formation assay were used to detect the effect of HOTAIRM1 knockdown on cell proliferation. The impact of HOTAIRM1 silence on cell cycle and apoptosis was assessed by flow cytometry assay. Transwell migration assay was performed to explore the influence of HOTAIRM1 downregulation on the migratory potential of PDAC cells. Western blot assay was applied to determine the expression changes of cell cycle, apoptosis, and migration-related genes before and after downregulating HOTAIRM1. HOTAIRM1 expression was abnormally upregulated in PDAC tissues and cells when compared with the control samples, and was positively associated with the expression of KRAS gene mutation. In vitro functional experiments, HOTAIRM1 expression was significantly downregulated by transfection with siHOTAIRM1 in SW1990 and PANC cell lines. HOTAIRM1 knockdown attenuated cell proliferation by inducing cell cycle arrest at G0/G1 phase, promoted cell apoptosis, and inhibited cell migration in PDAC cells by regulating related-genes expression. In conclusion, HOTAIRM1 plays a critical role in PDAC progression, which may be a novel diagnostic and rational therapeutic target for the treatment of pancreatic ductal adenocarcinoma.

Keywords

HOTAIRM1 Pancreatic ductal adenocarcinoma Proliferation Migration 

Notes

Acknowledgements

This study was supported by National Natural Science Foundation of China (Grant No.: 81460152) and Ningxia Medical University Scientific Research Project (Grant No.: XY201823).

Compliance with Ethical Standards

Conflict of Interest

The authors declare that they have no conflict of interest.

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Copyright information

© Arányi Lajos Foundation 2019

Authors and Affiliations

  1. 1.Department of Hepatobiliary SurgeryGeneral Hospital of Ningxia Medical UniversityYinchuanChina
  2. 2.Surgery LaboratoryGeneral Hospital of Ningxia Medical UniversityYinchuanChina
  3. 3.Department of Colorectal SurgeryGeneral Hospital of Ningxia Medical UniversityYinchuanChina
  4. 4.Ningxia Medical UniversityYinchuanChina

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