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Methods to Classify Cytoplasmic Foci as Mammalian Stress Granules
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Methods to Classify Cytoplasmic Foci as Mammalian Stress Granules

Published on: May 12, 2017

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Rbfox2 dissociation from stress granules suppresses cancer progression

Sunkyung Choi1, Moa Sa2, Namjoon Cho1

  • 1Department of Biochemistry, College of Natural Sciences, Chungnam National University, Daejeon, 34134, Republic of Korea.

Experimental & Molecular Medicine
|April 28, 2019
PubMed

Insights

Stress granules (SGs) sequester Rbfox2, inhibiting RB1 protein and promoting cancer. Resveratrol treatment dissociates Rbfox2 from SGs, reducing cancer progression and tumor growth.

Area of Science:

  • Cell Biology
  • Molecular Oncology
  • Cancer Research

Background:

  • Stress granules (SGs) are cytoplasmic foci of stalled translation initiation complexes.
  • RBP fox-1 homolog 2 (Rbfox2) is an SG component linked to cancer progression via RB1 mRNA.
  • The precise role of Rbfox2 in cancer progression is not fully understood.

Purpose of the Study:

  • To investigate the role of Rbfox2 in cancer progression.
  • To elucidate the mechanism of Rbfox2 localization in stress granules.
  • To evaluate the therapeutic potential of targeting Rbfox2 dissociation from SGs.

Main Methods:

  • Immunohistochemical analysis of Rbfox2 localization in human colon cancer tissues.
  • Treatment with resveratrol to induce Rbfox2 dissociation from SGs.
  • Assessment of RB1 protein expression and cell cycle progression.
  • In vivo studies using melanoma B16-F10 cells to evaluate metastasis and tumor growth.

Main Results:

  • Rbfox2 localizes to the cytoplasm in human colon cancer tissues and within SGs.
  • Rbfox2 in SGs inhibits RB1 protein expression and promotes cell cycle progression.
  • Resveratrol treatment dissociates Rbfox2 from SGs, inhibiting RB1 expression and cancer progression.
  • Resveratrol also inhibited Rbfox2 cytoplasmic localization in melanoma cells, reducing metastasis and tumor growth.

Conclusions:

  • Rbfox2 dissociation from SGs attenuates cancer progression.
  • Targeting Rbfox2 localization within SGs presents a potential therapeutic strategy for cancer.
  • Rbfox2 is identified as a potential therapeutic target for cancer treatment.

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