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Understanding Thyroid Cell Stress.

Syed A Morshed1, Terry F Davies1

  • 1Thyroid Research Unit, Icahn School of Medicine at Mount Sinai, and the James J. Peters VA Medical Center, New York, New York.

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This summary is machine-generated.

Cellular stress responses, including DNA damage and unfolded protein responses, are crucial for cell survival. Maintaining a balance between reactive oxygen species (ROS) and antioxidant (AOD) activity is vital for thyroid cell homeostasis.

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Area of Science:

  • Cellular biology
  • Molecular mechanisms of stress response
  • Thyroid cell physiology

Background:

  • Cellular stress responses are critical for survival, with failures leading to cell death.
  • Diverse stresses trigger signals like DNA damage response, unfolded protein response, and autophagy.
  • Thyroid cells require a balance between reactive oxygen species (ROS) and antioxidant (AOD) activity for homeostasis.

Purpose of the Study:

  • To describe the cellular responses of thyroid cells to various insults.
  • To explain the protective mechanisms employed by thyroid cells under stress.
  • To highlight the importance of balancing ROS and AOD in thyrocyte homeostasis.

Main Methods:

  • This perspective reviews existing evidence on cellular stress responses.
  • It focuses on the specific context of thyroid cells and their regulatory mechanisms.
  • The review synthesizes information on deoxyribonucleic acid damage response, unfolded protein response, mitochondrial/endoplasmic reticulum stress, and autophagy.

Main Results:

  • Intracellular stress signals, including DNA damage and unfolded protein responses, are key regulators of cell fate.
  • An imbalance in ROS and AOD in thyroid cells can lead to inflammation and apoptosis.
  • Thyroid cells utilize multiple protective responses to counteract cellular insults.

Conclusions:

  • Maintaining cellular homeostasis requires a delicate balance between cellular stress and protective responses.
  • Understanding these mechanisms is fundamental to preventing cell death and disease pathology.
  • Thyroid cells employ a range of adaptive strategies to cope with diverse environmental and internal stresses.