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Sense and sensitivity: FOXO and ROS in cancer development and treatment

Stephen S Myatt1, Jan J Brosens, Eric W-F Lam

  • 1Cancer Research-UK Labs, Department of Surgery and Cancer, Imperial College London, Hammersmith Campus, London, England, United Kingdom.

Antioxidants & Redox Signaling
|July 24, 2010
PubMed

Insights

Forkhead box O (FOXO) transcription factors link longevity and cancer by regulating oxidative stress. Targeting the reactive oxygen species (ROS)-FOXO pathway offers new strategies against cancer and drug resistance.

Area of Science:

  • Molecular Biology
  • Oncology
  • Cellular Biology

Background:

  • Forkhead box O (FOXO) transcription factors are crucial regulators of cellular processes including longevity, cell fate, and tumor development.
  • The activity of FOXO is intricately linked to oxidative stress, particularly the production and signaling of reactive oxygen species (ROS).
  • Dysregulation in the coupling of ROS production, oxidative stress signaling, and FOXO activity is a key event in cancer initiation and progression.

Purpose of the Study:

  • To elucidate the central role of the FOXO transcription factor family in the context of oxidative stress and its implications for cancer.
  • To highlight the significance of the ROS-FOXO pathway as a therapeutic target in cancer treatment.
  • To explore how understanding the FOXO-ROS relationship can lead to novel cancer therapies that overcome drug resistance.

Main Methods:

  • The study integrates existing research on FOXO transcription factors and oxidative stress.
  • It analyzes the molecular mechanisms connecting reactive oxygen species (ROS) signaling with FOXO activity.
  • The focus is on the role of this pathway in cancer development, progression, and response to chemotherapy.

Main Results:

  • FOXO factors are pivotal in mediating cellular responses to oxidative stress, influencing both normal cellular functions and tumorigenesis.
  • The reactive oxygen species (ROS)-FOXO pathway is implicated in the cellular response to chemotherapy and is a significant contributor to drug resistance.
  • The reciprocal regulation between FOXO and ROS is a critical determinant of cancer cell survival and proliferation.

Conclusions:

  • The FOXO transcription factor family plays a central role in linking oxidative stress to cell fate and cancer.
  • Targeting the ROS-FOXO pathway presents a promising therapeutic strategy for overcoming resistance to conventional cytotoxic chemotherapy.
  • Further unraveling the intricate relationship between FOXO and ROS can pave the way for developing more effective anticancer treatments.

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