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AGO2 involves the malignant phenotypes and FAK/PI3K/AKT signaling pathway in hypopharyngeal-derived FaDu cells

Yanhui Zhang1, Baoxin Wang2, Xinwei Chen2

  • 1Department of Otolaryngology Head and Neck Surgery, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.

Oncotarget
|September 15, 2017
PubMed

Insights

Argonaute 2 (AGO2) is overexpressed in hypopharyngeal cancer, promoting tumor growth and progression. Reducing AGO2 hinders cancer cell proliferation and migration, suggesting its potential as a therapeutic target.

Area of Science:

  • Oncology
  • Molecular Biology
  • Cancer Research

Background:

  • Argonaute 2 (AGO2) protein overexpression is observed in head and neck squamous cell carcinoma.
  • The specific role of AGO2 in hypopharyngeal cancer progression remains unclear.

Purpose of the Study:

  • To investigate the expression and function of AGO2 in hypopharyngeal cancer.
  • To elucidate the molecular mechanisms underlying AGO2's role in hypopharyngeal cancer tumorigenesis.

Main Methods:

  • Quantitative analysis of AGO2 expression in hypopharyngeal cancer tissues versus adjacent noncancerous tissues.
  • Functional studies involving stable knockdown of AGO2 in hypopharyngeal cancer cell lines (FaDu).
  • Assessment of cell proliferation, migration, invasion, cell cycle, and apoptosis following AGO2 knockdown.
  • Analysis of the FAK/PI3K/AKT signaling pathway.

Main Results:

  • AGO2 expression is significantly higher in hypopharyngeal cancer tissues compared to normal tissues.
  • Elevated AGO2 levels correlate with aggressive clinicopathologic features and poor patient outcomes.
  • Stable knockdown of AGO2 suppressed cell proliferation, migration, and invasion.
  • AGO2 knockdown induced cell cycle arrest and apoptosis.
  • Inhibition of the FAK/PI3K/AKT signaling pathway was observed after AGO2 knockdown.

Conclusions:

  • AGO2 acts as an oncogene in hypopharyngeal cancer, driving tumorigenesis and progression.
  • AGO2 holds potential value for molecular diagnosis, targeted therapy, and prognosis evaluation in hypopharyngeal cancer.
Keywords:
AGO2FAK/PI3K/AKT signaling pathwaycell proliferationhypopharyngeal cancer

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