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Related Concept Videos

Mitochondria01:37

Mitochondria

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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,...
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Electron Transport Chain: Complex I and II01:46

Electron Transport Chain: Complex I and II

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The mitochondrial electron transport chain (ETC) is the main energy generation system in the eukaryotic cells. However, mitochondria also produce cytotoxic reactive oxygen species (ROS) due to the large electron flow during oxidative phosphorylation. While Complex I is one of the primary sources of superoxide radicals, ROS production by Complex II is uncommon and may only be observed in cancer cells with mutated complexes.
ROS generation is regulated and maintained at moderate levels necessary...
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Mitochondrial Membranes01:45

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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,...
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Translocation of Proteins into the Mitochondria01:19

Translocation of Proteins into the Mitochondria

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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,...
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Mitochondrial Targeted Interventions for Aging.

Sophia Z Liu1, Ying Ann Chiao2, Peter S Rabinovitch3

  • 1Department of Radiology, University of Washington, Seattle, Washington 98195, USA.

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|October 3, 2023
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Summary
This summary is machine-generated.

Mitochondrial dysfunction drives aging and disease. This review explores interventions targeting mitochondria to promote healthy aging, with promising strategies in preclinical and clinical trials.

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Area of Science:

  • Gerontology and cellular biology
  • Mitochondrial biology and age-related diseases

Background:

  • Mitochondrial function is central to aging and age-related diseases.
  • Mitochondria influence cellular signaling, metabolism, redox balance, and energy status.
  • These factors impact stress responses, proteostasis, epigenetics, and inflammation during aging.

Purpose of the Study:

  • To review the multifaceted roles of mitochondria in cellular aging.
  • To highlight promising mitochondrial-targeted interventions for aging.
  • To discuss strategies progressing through preclinical and clinical trials for healthy aging.

Main Methods:

  • Literature review of mitochondrial roles in aging biology.
  • Analysis of preclinical data for mitochondrial interventions.
  • Survey of clinical trial outcomes for aging mitochondria.

Main Results:

  • Mitochondria are key signaling hubs influencing aging pathways.
  • Numerous compounds and strategies show potential in preclinical aging models.
  • Several interventions are now in clinical trials for older adults.

Conclusions:

  • Targeting mitochondrial function offers a promising avenue for promoting healthy aging.
  • Interventions reviewed demonstrate potential to delay or reverse age-related decline.
  • Clinical validation is ongoing to assess efficacy in improving healthspan.