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Dual roles of Nrf2 in cancer

Alexandria Lau1, Nicole F Villeneuve, Zheng Sun

  • 1Department of Pharmacology and Toxicology, University of Arizona, Tucson, AZ 85721, USA.

Pharmacological Research
|October 8, 2008
PubMed

Insights

The transcription factor Nrf2 protects cells from oxidative stress but can also promote cancer growth and chemoresistance. Inhibiting Nrf2 may be crucial for effective cancer chemotherapy.

Area of Science:

  • Molecular Biology
  • Cellular Biology
  • Biochemistry

Background:

  • The transcription factor Nrf2 (NF-E2-related factor 2) regulates cellular defense against oxidative stress by upregulating antioxidant and detoxification genes.
  • Activation of the Nrf2 pathway offers protection against toxins and carcinogens, making it a target for cancer prevention strategies.
  • Emerging evidence highlights a dual role for Nrf2, with implications in cancer progression and treatment resistance.

Purpose of the Study:

  • To review the multifaceted role of Nrf2 in cancer.
  • To emphasize recent findings on Nrf2's cancer-promoting functions.
  • To discuss Nrf2's involvement in acquired chemoresistance.

Main Methods:

  • Literature review focusing on Nrf2's role in cancer.
  • Analysis of studies investigating Nrf2 overexpression in cancer cells and tissues.
  • Examination of Nrf2's contribution to chemoresistance.

Main Results:

  • Nrf2 and its downstream genes are overexpressed in various cancer types, aiding cancer cell survival and growth.
  • Upregulation of Nrf2 is observed in chemoresistant cancer cells, contributing to treatment failure.
  • The Nrf2 pathway's activation can paradoxically support cancer progression.

Conclusions:

  • Nrf2 plays a significant role in cancer development and progression.
  • Inhibition of the Nrf2 pathway may be a necessary strategy in cancer chemotherapy to overcome resistance.
  • Further research is warranted to fully elucidate Nrf2's complex role in oncology.

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