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Article

Estrogen promotes fat mass and obesity-associated protein nuclear localization and enhances endometrial cancer cell proliferation via the mTOR signaling pathway

  • Authors:
    • Yaping Zhu
    • Jiaqi Shen
    • Liyan Gao
    • Youji Feng
  • View Affiliations / Copyright

    Affiliations: Department of Obstetrics and Gynecology, Shanghai Jiao Tong University Affiliated First People's Hospital, Shanghai 200080, P.R. China
  • Pages: 2391-2397
    |
    Published online on: February 5, 2016
       https://doi.org/10.3892/or.2016.4613
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Abstract

Extensive exposure to estrogen is generally acknowledged as a risk factor for endometrial cancer. Given that the accumulation of adipocytes also contributes to the increased production of estrogen, in the present study, we evaluated the expression of the fat mass and obesity-associated (FTO) gene in endometrial tumor tissues and further explored the mechanism of how estrogen facilitates FTO nuclear localization and promotes endometrial cancer cell proliferation. Immunohistochemical (IHC) staining assay was used to detect the FTO expression in endometrial tumor samples. Western blotting was performed to investigate the mechanism of estrogen-induced FTO nuclear localization. siRNA was used to knock down ERα and further explore its role in FTO nuclear localization. MTT assay was carried out to determine cell proliferation. We found that FTO was overexpressed in endometrial carcinoma tissues and served as a poor prognostic marker. Additionally, estrogen induced FTO nuclear accumulation via the mTOR signaling pathway and the nuclear localization was ERα-dependent, which contributed to enhanced proliferative activity. Therefore, the present study provides new insight into the mechanisms of estrogen-induced proliferation, implying the possibility of using FTO as a potential therapeutic target for the treatment of endometrial cancer.
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Copy and paste a formatted citation
Spandidos Publications style
Zhu Y, Shen J, Gao L and Feng Y: Estrogen promotes fat mass and obesity-associated protein nuclear localization and enhances endometrial cancer cell proliferation via the mTOR signaling pathway. Oncol Rep 35: 2391-2397, 2016.
APA
Zhu, Y., Shen, J., Gao, L., & Feng, Y. (2016). Estrogen promotes fat mass and obesity-associated protein nuclear localization and enhances endometrial cancer cell proliferation via the mTOR signaling pathway. Oncology Reports, 35, 2391-2397. https://doi.org/10.3892/or.2016.4613
MLA
Zhu, Y., Shen, J., Gao, L., Feng, Y."Estrogen promotes fat mass and obesity-associated protein nuclear localization and enhances endometrial cancer cell proliferation via the mTOR signaling pathway". Oncology Reports 35.4 (2016): 2391-2397.
Chicago
Zhu, Y., Shen, J., Gao, L., Feng, Y."Estrogen promotes fat mass and obesity-associated protein nuclear localization and enhances endometrial cancer cell proliferation via the mTOR signaling pathway". Oncology Reports 35, no. 4 (2016): 2391-2397. https://doi.org/10.3892/or.2016.4613
Copy and paste a formatted citation
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Spandidos Publications style
Zhu Y, Shen J, Gao L and Feng Y: Estrogen promotes fat mass and obesity-associated protein nuclear localization and enhances endometrial cancer cell proliferation via the mTOR signaling pathway. Oncol Rep 35: 2391-2397, 2016.
APA
Zhu, Y., Shen, J., Gao, L., & Feng, Y. (2016). Estrogen promotes fat mass and obesity-associated protein nuclear localization and enhances endometrial cancer cell proliferation via the mTOR signaling pathway. Oncology Reports, 35, 2391-2397. https://doi.org/10.3892/or.2016.4613
MLA
Zhu, Y., Shen, J., Gao, L., Feng, Y."Estrogen promotes fat mass and obesity-associated protein nuclear localization and enhances endometrial cancer cell proliferation via the mTOR signaling pathway". Oncology Reports 35.4 (2016): 2391-2397.
Chicago
Zhu, Y., Shen, J., Gao, L., Feng, Y."Estrogen promotes fat mass and obesity-associated protein nuclear localization and enhances endometrial cancer cell proliferation via the mTOR signaling pathway". Oncology Reports 35, no. 4 (2016): 2391-2397. https://doi.org/10.3892/or.2016.4613
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