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Defining Hsp33's Redox-regulated Chaperone Activity and Mapping Conformational Changes on Hsp33 Using Hydrogen-deuterium Exchange Mass Spectrometry
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Redox Control of Multidrug Resistance and Its Possible Modulation by Antioxidants

Aysegul Cort1, Tomris Ozben2, Luciano Saso3

  • 1Department of Nutrition and Dietetics, Faculty of Health Sciences, Sanko University, İncili Pınar, Gazi Muhtar Paşa Bulvarı, Sehitkamil, 27090 Gaziantep, Turkey.

Oxidative Medicine and Cellular Longevity
|February 17, 2016
PubMed

Insights

Multidrug resistance (MDR) in cancer chemotherapy is driven by redox mechanisms. Targeting these redox pathways with novel drugs offers a promising strategy to overcome MDR and improve treatment efficacy.

Area of Science:

  • Biochemistry
  • Molecular Biology
  • Cancer Research

Background:

  • Multidrug resistance (MDR) significantly limits the clinical effectiveness of anticancer chemotherapies.
  • Redox mechanisms are critically involved in the molecular regulation of MDR.
  • Tumor cells develop adaptive antioxidant responses to counteract chemotherapy-induced oxidative stress.

Purpose of the Study:

  • To elucidate the role of redox mechanisms in MDR.
  • To explore novel therapeutic strategies targeting redox pathways to overcome MDR.

Main Methods:

  • Analysis of molecular events regulating MDR, focusing on redox-dependent pathways.
  • Investigation of the interplay between chemotherapeutic metabolism, Nrf2 pathway, and antioxidant systems.
  • Review of therapeutic approaches involving redox-active drugs and inhibitors of antioxidant defense.

Main Results:

  • Chemotherapeutics are subject to redox-regulated cellular uptake and rapid metabolic inactivation.
  • The Nrf2 pathway upregulates antioxidant and detoxifying systems, contributing to MDR.
  • Tumor cells mount adaptive antioxidant defenses against reactive oxygen species (ROS).

Conclusions:

  • Redox-dependent mechanisms are central to MDR in cancer.
  • Targeting redox pathways, including the use of antioxidants, prooxidants, or inhibitors of antioxidant defense, presents a novel strategy to combat MDR.
  • Further research into these redox-active drugs is warranted to improve chemotherapy outcomes.

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