Inhibition of Akt/FOXO3a signaling by constitutively active FOXO3a suppresses growth of follicular thyroid cancer cell lines

Zhen Yu Hong, Hyeon Jung Lee, Dong Yeob Shin, Suk Kyoung Kim, Mi Ran Seo, Eun Jig Lee

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10 Citations (Scopus)


Akt-dependent FOXO3a cytoplasmic translocation is an important tumorigenic mechanism for escaping from apoptosis in cancer cells. In the present study, we examined whether non-phosphorylatable FOXO3a can inhibit cell growth of various follicular thyroid carcinoma (FTC) cell lines. Adenovirus carrying the FOXO3a-triple mutant (TM) sequence including point mutations at three Akt phosphorylation sites (Ad-FOXO3a-TM) was generated and transduced to the cells to mimic inhibition of Akt/FOXO3a signal. Transduction of Ad-FOXO3a-TM to FTC133 cells induced cell cycle arrest and apoptosis. Injection of Ad-FOXO3a-TM suppressed the growth of xenograft tumors in athymic mice. Consequently, our results indicate that gene therapy based on Ad-FOXO3a-TM has therapeutic potential for FTC.

Original languageEnglish
Pages (from-to)34-40
Number of pages7
JournalCancer Letters
Issue number1
Publication statusPublished - 2012 Jan 1


All Science Journal Classification (ASJC) codes

  • Oncology
  • Cancer Research

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