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Redox signaling and the MAP kinase pathways

Martine Torres1, Henry Jay Forman

  • 1Childrens Hospital Los Angeles Research Institute, Department of Pediatrics, Keck School of Medicine, University of Southern California, Los Angeles, CA 90027, USA. mtorres@chla.usc.edu

Biofactors (Oxford, England)
|August 5, 2003
PubMed

Insights

Reactive oxygen species (ROS) transiently increase and activate mitogen-activated protein (MAP) kinases, crucial signaling molecules. This review explores ROS

Area of Science:

  • Cellular signaling pathways
  • Molecular biology
  • Biochemistry

Background:

  • Mitogen-activated protein (MAP) kinases are serine/threonine kinases essential for cellular processes.
  • MAP kinase activation involves a cascade requiring phosphorylation of a TxY motif.
  • Three main MAP kinase families exist: ERKs, JNKs, and p38 MAPKs, with distinct roles in proliferation, differentiation, and stress responses.

Purpose of the Study:

  • To review the role of reactive oxygen species (ROS) in MAP kinase activation.
  • To highlight the significance of transient ROS increases in cellular signaling.
  • To discuss ROS involvement in various cell types, including macrophages.

Main Methods:

  • Literature review of studies investigating ROS and MAP kinase signaling.
  • Analysis of signaling cascades involving MAP kinase modules.
  • Examination of ROS production mechanisms, such as NADPH oxidase in macrophages.

Main Results:

  • Transient ROS elevations act as signaling mediators, activating MAP kinases.
  • MAP kinases are integral to cellular responses to oxidative stress and proliferation signals.
  • Macrophages utilize NADPH oxidase to produce ROS, linking inflammation and signaling.

Conclusions:

  • ROS play a dual role in cellular function, mediating both stress responses and proliferation signals.
  • Understanding ROS-MAPK interactions is crucial for comprehending cellular regulation.
  • Macrophages are key players in ROS-mediated signaling pathways relevant to inflammation.

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