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Study of Endoplasmic Reticulum and Mitochondria Interactions by In Situ Proximity Ligation Assay in Fixed Cells
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The roles of mitochondria-associated membranes in mitochondrial quality control under endoplasmic reticulum stress

Beiwu Lan1, Yichun He1, Hongyu Sun2

  • 1Department of Neurosurgery, China-Japan Union Hospital, Jilin University, Changchun, Jilin, China.

Life Sciences
|June 21, 2019
PubMed

Insights

Endoplasmic reticulum (ER) stress impacts mitochondrial function via mitochondria-associated membranes (MAMs). This review explores how MAMs mediate ER stress signaling to maintain mitochondrial quality control.

Area of Science:

  • Cell Biology
  • Organelle Communication
  • Stress Response

Background:

  • The endoplasmic reticulum (ER) and mitochondria are vital organelles.
  • Mitochondria-associated membranes (MAMs) are specialized ER membrane domains adjacent to mitochondria, facilitating inter-organelle communication.
  • ER stress is an adaptive cellular response to stimuli that significantly affects mitochondrial function.

Purpose of the Study:

  • To review the mechanisms of ER stress and mitochondrial quality control.
  • To elucidate the role of MAMs in transmitting ER stress signals to mitochondria.
  • To highlight the significance of MAMs in maintaining mitochondrial quality under ER stress.

Main Methods:

  • Literature review of ER stress, mitochondrial quality control, and MAMs.
  • Analysis of signaling pathways between ER and mitochondria.
  • Synthesis of current research on MAMs' function during cellular stress.

Main Results:

  • ER stress profoundly influences mitochondrial dynamics and function.
  • MAMs act as crucial signaling hubs, relaying stress signals from the ER to mitochondria.
  • Dysfunction in MAMs under ER stress can impair mitochondrial quality control.

Conclusions:

  • MAMs are central to the cellular response to ER stress.
  • Understanding MAMs' role is key to comprehending mitochondrial quality control under stress.
  • Targeting MAMs may offer therapeutic strategies for stress-related mitochondrial dysfunction.
Keywords:
Ca(2+)Endoplasmic reticulum stressMitochondria associated membranesMitochondrial quality control

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