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Related Concept Videos

Mitochondrial Membranes01:45

Mitochondrial Membranes

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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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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.
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Translocation of Proteins into the Mitochondria01:19

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Mitochondrial precursors are translocated to the internal subcompartments via independent mechanisms involving distinct protein machineries called translocases.
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Chronic Obstructive Pulmonary Disease-II: Pathophysiology01:20

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Chronic Obstructive Pulmonary Disease (COPD) pathophysiology is intricate and multifaceted, involving a complex interplay of physiological processes. Understanding these mechanisms is crucial for effectively managing and treating COPD. Here is an in-depth look at the critical elements in the pathophysiology of COPD:
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The Inner Mitochondrial Membrane01:28

The Inner Mitochondrial Membrane

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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...
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Related Experiment Video

Updated: Oct 24, 2025

Visualizing Mitophagy with Fluorescent Dyes for Mitochondria and Lysosome
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Mitochondrial dynamics and mitophagy in lung disorders.

Archana Sharma1, Shaniya Ahmad1, Tanveer Ahmad2

  • 1Translational Research Lab, Department of Biotechnology, Faculty of Natural Sciences, Jamia Millia Islamia, New Delhi 110025, India.

Life Sciences
|August 14, 2021
PubMed
Summary

Mitochondrial dysfunction significantly impacts lung health, affecting processes like energy production and cellular repair. Understanding mitochondrial dynamics and mitophagy is key to developing new therapies for lung diseases.

Keywords:
Lung disordersMitochondrial dynamicsMitochondrial fissionMitochondrial fusionMitophagy

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Area of Science:

  • Cellular Biology
  • Mitochondrial Biology
  • Pulmonary Medicine

Background:

  • Mitochondria are vital organelles regulating cellular energy, biosynthesis, and stress responses.
  • Mitochondrial homeostasis depends on a balance of biogenesis, fusion, fission, and mitophagy.
  • Mitochondrial dysfunction is increasingly linked to various acute and chronic lung pathologies.

Purpose of the Study:

  • To review the regulation of mitochondrial dynamics and mitophagy in lung homeostasis.
  • To highlight the role of mitochondrial dysfunction in lung disorders.
  • To identify potential therapeutic targets within mitochondrial pathways.

Main Methods:

  • Comprehensive literature review.
  • Analysis of molecular mechanisms regulating mitochondrial dynamics.
  • Synthesis of evidence linking mitochondrial dysfunction to lung diseases.

Main Results:

  • Mitochondrial dynamics and mitophagy are crucial for normal lung function.
  • Dysfunctional mitochondria are implicated in lung cancer, COPD, IPF, ALI/ARDS, BPD, and asthma.
  • Specific molecular checkpoints in mitochondrial dynamics offer therapeutic potential.

Conclusions:

  • Mitochondrial dysfunction is a central factor in lung disease pathogenesis.
  • Targeting mitochondrial dynamics and mitophagy presents promising therapeutic strategies for lung disorders.