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[Suppression of Aurora-A by RNA interference inhibits laryngeal cancer Hep-2 cell growth]

Hao Zhang1, Xue-hua Chen, Chang-ping Cai

  • 1Department of Otorhinolaryngology, Ruijin Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai 200025, China.

Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi = Chinese Journal of Otorhinolaryngology Head and Neck Surgery
|March 30, 2012
PubMed
Abstract

Insights

Knocking down Aurora-A kinase using RNA interference significantly inhibits laryngeal cancer Hep-2 cell growth and invasion. This suggests Aurora-A is a potential therapeutic target for laryngeal squamous cell carcinoma (LSCC).

Area of Science:

  • Molecular Biology
  • Oncology
  • Cell Biology

Background:

  • Aurora-A kinase is implicated in cell proliferation and cancer progression.
  • Understanding Aurora-A's role in laryngeal cancer is crucial for developing targeted therapies.

Purpose of the Study:

  • To investigate the impact of Aurora-A knockdown via RNA interference on laryngeal cancer Hep-2 cell behavior.
  • To evaluate the in vitro and in vivo effects of Aurora-A inhibition on tumor growth and invasiveness.

Main Methods:

  • Constructed a plasmid with small interfering RNA (siRNA) targeting Aurora-A.
  • Transfected human laryngeal cancer Hep-2 cells with the siRNA plasmid.
  • Assessed cell viability, proliferation (CCK-8 assay), invasion (Transwell assay), anchorage-independent growth (colony formation assay), and protein expression (Western blot, immunohistochemistry). Evaluated tumorigenicity in vivo.

Main Results:

  • Aurora-A protein expression was reduced by 52% in Hep-2 cells transfected with Aurora-A siRNA.
  • Knockdown of Aurora-A significantly decreased Hep-2 cell viability, proliferation, invasion, and anchorage-independent growth.
  • Tumor growth in vivo was significantly inhibited in the Aurora-A knockdown group, with reduced expression of FAK and MMP-2.

Conclusions:

  • Silencing Aurora-A effectively inhibits the growth and invasiveness of laryngeal cancer Hep-2 cells.
  • Aurora-A represents a promising therapeutic target for laryngeal squamous cell carcinoma (LSCC).

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