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EIF5A2 Is Highly Expressed in Anaplastic Thyroid Carcinoma and Is Associated With Tumor Growth by Modulating TGF-

Fengyun Hao1, Qingli Zhu2, Lingwei Lu2

  • 1Department of Pathology, the Affiliated Hospital of Qingdao UniversityQingdaoP.R. China.

Oncology Research
|March 7, 2020
PubMed

Insights

Eukaryotic translation initiation factor 5A2 (EIF5A2) is upregulated in anaplastic thyroid carcinoma (ATC). Targeting EIF5A2 inhibits ATC cell growth by affecting the TGF-/Smad2/3 pathway, suggesting it as a potential therapeutic target.

Area of Science:

  • Oncology
  • Molecular Biology
  • Cell Biology

Background:

  • Anaplastic thyroid carcinoma (ATC) is an aggressive thyroid cancer with limited treatment options.
  • Eukaryotic translation initiation factor 5A2 (EIF5A2) is implicated in tumor metastasis and its role in ATC is not well understood.

Purpose of the Study:

  • To investigate the expression of EIF5A2 in human ATC tissues and cell lines.
  • To elucidate the role and underlying mechanisms of EIF5A2 in ATC tumorigenesis.
  • To explore EIF5A2 as a potential therapeutic target for ATC.

Main Methods:

  • Immunohistochemistry, real-time PCR, and Western blotting were used to analyze EIF5A2 expression in ATC tissues and cell lines.
  • Short hairpin RNA (shRNA) and overexpression systems were employed to manipulate EIF5A2 levels in vitro and in vivo.
  • The TGF-/Smad2/3 signaling pathway was assessed following EIF5A2 modulation.

Main Results:

  • EIF5A2 expression was significantly upregulated in ATC tissues and cell lines compared to normal tissues.
  • EIF5A2 knockdown induced cell death and downregulated p-Smad2/3 in SW1736 cells.
  • EIF5A2 overexpression promoted cell growth and upregulated p-Smad3 in 8505C cells, with modulation of the TGF-/Smad2/3 pathway.

Conclusions:

  • EIF5A2 plays a crucial role in controlling cell growth in ATC.
  • The EIF5A2/TGF-/Smad2/3 signaling axis represents a promising therapeutic target for anaplastic thyroid carcinoma.

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