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Updated: May 22, 2026

An Orthotopic Murine Model of Human Prostate Cancer Metastasis
06:48

An Orthotopic Murine Model of Human Prostate Cancer Metastasis

Published on: September 18, 2013

Aloe-emodin suppresses prostate cancer by targeting the mTOR complex 2

Kangdong Liu1, Chanmi Park, Shengqing Li

  • 1The World Class Institute and Chemical Biology Research Center, Korea Research Institute of Bioscience and Biotechnology, Ochang, Cheongwon 363-883, Republic of Korea.

Carcinogenesis
|April 26, 2012
PubMed

Insights

Aloe-emodin, a natural compound, inhibits prostate cancer cell growth by targeting mammalian target of rapamycin complex 2 (mTORC2). This study reveals mTORC2

Area of Science:

  • Oncology
  • Molecular Biology
  • Pharmacology

Background:

  • Prostate cancer development involves Phosphatidylinositol 3-kinase (PI3-K) pathway dysregulation, including Akt activation.
  • Mammalian target of rapamycin complex 2 (mTORC2) is crucial for Akt phosphorylation at Ser473 and prostate cancer cell proliferation.

Purpose of the Study:

  • To investigate the role of mTORC2 in prostate cancer progression.
  • To evaluate the anti-cancer effects of aloe-emodin on prostate cancer cells by targeting mTORC2.

Main Methods:

  • Cell proliferation and anchorage-independent growth assays were performed on PC3 prostate cancer cells.
  • Protein analysis, pull-down assays, and in vitro kinase assays were used to assess mTORC2 activity and aloe-emodin's interaction.
  • In vivo tumor suppression effects were evaluated in an athymic nude mouse model.

Main Results:

  • mTORC2 was found to be important in PC3 androgen-refractory prostate cell proliferation and growth.
  • Aloe-emodin inhibited PC3 cell proliferation and anchorage-independent growth.
  • Aloe-emodin treatment reduced Akt and PKCα activation and directly inhibited mTORC2 kinase activity, showing in vivo tumor suppression.

Conclusions:

  • mTORC2 plays a significant role in prostate cancer development.
  • Aloe-emodin demonstrates potential as a therapeutic agent for prostate cancer by inhibiting mTORC2 signaling.

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