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Related Concept Videos

Mitochondrial Membranes01:45

Mitochondrial Membranes

A single mitochondrion is a bean-shaped organelle enclosed by a double-membrane system. The outer membrane of mitochondria is smooth and contains many porins - the integral membrane transporters. Porins enable free diffusion of ions and small uncharged molecules through the outer mitochondrial membrane but limit the transport of molecules larger than 5000 Daltons. Further, the outer mitochondrial membrane forms a unique structure called membrane contact sites with other subcellular organelles,...
Mitochondrial Membranes01:45

Mitochondrial Membranes

A single mitochondrion is a bean-shaped organelle enclosed by a double-membrane system. The outer membrane of mitochondria is smooth and contains many porins - the integral membrane transporters. Porins enable free diffusion of ions and small uncharged molecules through the outer mitochondrial membrane but limit the transport of molecules larger than 5000 Daltons. Further, the outer mitochondrial membrane forms a unique structure called membrane contact sites with other subcellular organelles,...
Mitochondria01:37

Mitochondria

Mitochondria are eukaryotic cellular organelles that are known to produce energy through a process called oxidative phosphorylation. Besides their primary function, mitochondria are involved in various cellular processes, including cell growth, differentiation, signaling, metabolism, and senescence. Age-related changes cause a decline in mitochondrial quality and integrity due to increased mitochondrial mutations and oxidative damage. Thus, aging can severely impact mitochondrial functions,...
The Inner Mitochondrial Membrane01:28

The Inner Mitochondrial Membrane

The inner mitochondrial membrane is the primary site of ATP synthesis. The inner membrane domain that forms a smooth layer adjacent to the outer membrane is called the inner boundary membrane. This domain contains membrane transporters that drive metabolites in and out of the mitochondria.  In contrast, the inner membrane network that invaginates into the matrix space is called the cristae membrane. This domain accounts for principle mitochondrial function as it accommodates the protein...
Translocation of Proteins into the Mitochondria01:19

Translocation of Proteins into the Mitochondria

Mitochondrial precursors are translocated to the internal subcompartments via independent mechanisms involving distinct protein machineries called translocases.
Sorting of outer membrane proteins:
Mitochondrial outer membrane proteins are of two types: the transmembrane, beta-barrel porins, and the membrane-anchored, alpha-helical proteins. Beta-barrel porin precursors are translocated by the TOM complex and inserted into the outer mitochondrial membrane by the SAM complex. In contrast,...
Mechanisms of Membrane-bending01:15

Mechanisms of Membrane-bending

The living membranes are flexible due to their fluid mosaic nature; however, their bending into different shapes is an active process regulated by specific lipids and proteins. The membrane bending can be transient as seen in vesicles or stable for a long time as in microvilli. Cells regulate the size, location, and duration of the membrane curvature.
Membrane bending can happen due to intrinsic changes in lipid composition or extrinsic association with different proteins. The proteins involved...

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Understanding the Changes in Mitochondrial Morphology through Dynamic and Three-dimensional Fluorescence Micrographs
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Understanding the Changes in Mitochondrial Morphology through Dynamic and Three-dimensional Fluorescence Micrographs

Published on: August 15, 2025

Mitochondrial shape changes: orchestrating cell pathophysiology.

Silvia Campello1, Luca Scorrano

  • 1Department of Cell Physiology and Metabolism, University of Geneva, 1 Rue M. Servet, 1206 Genève, Switzerland.

EMBO Reports
|August 21, 2010
PubMed
Summary
This summary is machine-generated.

Mitochondrial dynamics, controlled by fusion and fission proteins, impact cell health and disease. Emerging research reveals their crucial role in immune cell function and innate immunity.

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Area of Science:

  • Cell Biology
  • Immunology
  • Mitochondrial Dynamics

Background:

  • Mitochondria are dynamic organelles whose morphology (size, shape, distribution) is regulated by proteins controlling fusion and fission.
  • Mitochondrial shape is critical for cellular physiology, with alterations linked to neurodegeneration, calcium signaling, lifespan, and cell death.
  • Historically, mitochondria were thought to play a minor role in immune cells due to their low abundance, but this view is changing.

Purpose of the Study:

  • To review the roles of mitochondrial dynamics in cell pathophysiology.
  • To explore the impact of mitochondrial dynamics on immune cell migration, activation, and innate immune responses.
  • To highlight how studying mitochondrial dynamics in immunology can advance understanding of signaling cascades.

Main Methods:

  • Literature review and synthesis of existing research on mitochondrial dynamics.
  • Analysis of studies investigating mitochondrial morphology in various cell types, including immune cells.
  • Discussion of the implications of mitochondrial dynamics in cellular signaling pathways.

Main Results:

  • Mitochondrial dynamics significantly influence fundamental cellular processes and are implicated in various diseases.
  • Despite lower abundance, mitochondrial dynamics play a key role in immune cell migration, activation, and the innate immune response.
  • Changes in mitochondrial morphology are increasingly recognized as critical factors in immune cell function.

Conclusions:

  • Mitochondrial dynamics are essential for both general cell pathophysiology and specific immune system functions.
  • Further investigation into mitochondrial dynamics within the immune system promises new insights into immune signaling.
  • Understanding mitochondrial dynamics in immune cells could reveal novel therapeutic targets for immune-related disorders.