The Association between NADPH Oxidase 2 (NOX2) and Drug Resistance in Cancer

Shiqi Dong1, Chao Chen2, Chang Di3

  • 1Department of Pharmacy, Harbin Medical University Cancer Hospital, Harbin, 150086, China.

Current Cancer Drug Targets
|February 16, 2024
PubMed

Insights

NADPH oxidase 2 (NOX2) generates reactive oxygen species (ROS) that impact tumor cells. Understanding NOX2

Area of Science:

  • Biochemistry
  • Oncology
  • Immunology

Background:

  • NADPH oxidase (NOX) enzymes are key sources of intracellular reactive oxygen species (ROS).
  • NADPH oxidase 2 (NOX2) plays a significant role in immune and oxidative stress responses.
  • The role of NOX2 in tumor development and its relationship with anti-tumor drug resistance are increasingly important research areas.

Purpose of the Study:

  • To systematically review the NOX family, focusing on NOX2.
  • To explore the dual role of NOX2-mediated ROS in tumor drug resistance.
  • To provide an updated classification of NOX2 inhibitors and agonists.

Main Methods:

  • Literature review of NOX family members, particularly NOX2.
  • Analysis of existing research on NOX2 expression and anti-tumor drug resistance.
  • Compilation of current NOX2 inhibitors and agonists.

Main Results:

  • NOX2 is implicated in tumor cell development and immune responses.
  • NOX2-mediated ROS may enhance the efficacy of certain anti-tumor drugs.
  • Limited studies have focused on the direct link between NOX2 expression and drug resistance.

Conclusions:

  • A comprehensive understanding of NOX2's function in tumor drug resistance is needed.
  • NOX2 presents a potential therapeutic target for overcoming cancer drug resistance.
  • This review offers insights for developing novel oncology treatments.

Related Concept Videos

Treatment Resistant Cancers02:56

Treatment Resistant Cancers

Cancer is the second leading cause of death in the United States. A cancer cell is genetically unstable and hence can mutate faster. They can also modify their microenvironment and escape immune surveillance. The difficulties in treating cancer are further compounded by the emergence of rapid resistance to anticancer drugs. The most common ways to attain resistance in cancer cells include alteration in drug transport and metabolism, modification of drug target, elevated DNA damage response, or...
3.3K
Electron Transport Chain: Complex I and II01:46

Electron Transport Chain: Complex I and II

The mitochondrial electron transport chain (ETC) is the main energy generation system in the eukaryotic cells. However, mitochondria also produce cytotoxic reactive oxygen species (ROS) due to the large electron flow during oxidative phosphorylation. While Complex I is one of the primary sources of superoxide radicals, ROS production by Complex II is uncommon and may only be observed in cancer cells with mutated complexes.
ROS generation is regulated and maintained at moderate levels necessary...
13.3K
Adaptive Mechanisms in Cancer Cells02:53

Adaptive Mechanisms in Cancer Cells

Cancer cells accumulate genetic changes at an abnormally rapid rate due to the defects in the DNA repair mechanisms. From an evolutionary perspective, such genetic instability is advantageous for cancer development. Mutant cell lines accumulate a series of beneficial mutations that contribute to their progression into cancer.
Some of the advantages that cancer cells have on normal cells include - enhanced ability to divide without terminally differentiating, induce new blood vessel formation,...
5.8K
Carrier-Mediated Transport01:06

Carrier-Mediated Transport

Carrier-mediated transport is a pivotal process in drug absorption, particularly for lipid-insoluble drugs, and encompasses facilitated diffusion and active transport. Facilitated diffusion allows drugs to move along their concentration gradient without energy expenditure, while active transport utilizes ATP to drive drug movement against this gradient.
Active transport involves two types of membrane-spanning transporters: uptake and efflux. Uptake transporters are expressed in the small...
426
Cancer Therapies02:49

Cancer Therapies

Cancer therapies are various modes of treatment, such as surgery, radiation therapy, and chemotherapy that are administered to cancer patients.
However, cancer treatments can pose several challenges, as therapies used to kill cancer cells are generally also toxic to normal cells. Moreover, cancer cells mutate rapidly and can develop resistance to chemical agents or radiation therapy. Besides, all types of cancer cells may not respond to the same therapy. Some cancer cells respond to one...
7.7K
Combination Therapies and Personalized Medicine02:50

Combination Therapies and Personalized Medicine

Combining two or more treatment methods increases the life span of cancer patients while reducing damage to vital organs or tissue from the overuse of a single treatment. Combination therapy also targets different cancer-inducing pathways, thus reducing the chances of developing resistance to treatment.
The combination of the drug acetazolamide and sulforaphane is a good example of combination therapy to treat cancer. The cells in the interior of a large tumor often die due to the hypoxic and...
4.9K