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Updated: Sep 12, 2025

Measuring Mitochondrial Function of Naïve and Effector CD8 T Cells
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Measuring Mitochondrial Function of Naïve and Effector CD8 T Cells

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424

Mitochondria reactive oxygen species signaling-dependent immune responses in macrophages and T cells

Samuel E Weinberg1, Navdeep S Chandel2

  • 1Department of Pathology, Northwestern University Feinberg School of Medicine, Chicago, IL, USA; Center for Human Immunobiology, Northwestern University Feinberg School of Medicine, Chicago, IL, USA.

Immunity
|August 5, 2025
PubMed

Insights

Mitochondria regulate immune cell function through mitochondrial reactive oxygen species (mtROS). Dysregulation of mtROS contributes to inflammation, autoimmunity, and cancer, highlighting their critical role in disease.

Area of Science:

  • Immunology
  • Cell Biology
  • Mitochondrial Biology

Background:

  • Mitochondria are crucial for cellular energy and metabolism.
  • Mitochondria also function as signaling hubs, particularly through mitochondrial reactive oxygen species (mtROS).
  • mtROS are vital second messengers in immune cell regulation.

Purpose of the Study:

  • To review the molecular mechanisms of mtROS production and detoxification.
  • To explore the role of mtROS in macrophage and T cell function.
  • To discuss the implications of mtROS in disease pathogenesis.

Main Methods:

  • Literature review of molecular mechanisms.
  • Analysis of mtROS signaling pathways.
  • Examination of immune cell fate and function.

Main Results:

  • Mitochondria significantly influence immune cell signaling via mtROS.
  • Optimal mtROS levels are essential for immune homeostasis.
  • Imbalances in mtROS are linked to chronic inflammation, autoimmunity, and cancer.

Conclusions:

  • Mitochondrial ROS are key regulators of immune responses.
  • Understanding mtROS pathways is crucial for developing therapies for immune-related diseases.
  • mtROS dysregulation is implicated in the pathogenesis of various chronic conditions.

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