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Related Concept Videos

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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Mitochondria01:37

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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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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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Mitochondrial Membranes

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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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Mitochondrial Precursor Proteins01:39

Mitochondrial Precursor Proteins

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Mitochondrial precursors are partially unfolded or loosely folded polypeptide chains. Newly synthesized precursors are inhibited from spontaneously folding into their native conformation by the cytosolic chaperones, heat shock proteins 70 (Hsp70), and mitochondrial import stimulation factors (MSFs). Precursors bound to MSFs are guided to the TOM70-TOM37 receptors, while precursors bound to Hsp70  chaperones are targetted to TOM20-TOM22 receptor complexes.
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Analytical Determination of Mitochondrial Function of Excised Solid Tumor Homogenates
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Mitochondrial function in melanoma.

Nicholas Theodosakis1, Goran Micevic1, Daniel P Kelly2

  • 1Department of Pathology, Yale University School of Medicine, New Haven, CT, United States.

Archives of Biochemistry and Biophysics
|July 6, 2014
PubMed
Summary
This summary is machine-generated.

Mitochondrial changes are crucial in melanoma development and treatment response. Understanding these roles offers new therapeutic targets for this deadly skin cancer.

Keywords:
ApoptosisMITFMelanomaMetabolismMitochondriaPGC-1

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Area of Science:

  • Oncology
  • Cell Biology
  • Biochemistry

Background:

  • Melanoma incidence is rising, necessitating novel therapeutic strategies.
  • Recent advances in melanoma biology have led to new treatments.
  • Mitochondrial function is increasingly recognized as critical in cancer progression.

Purpose of the Study:

  • To review the multifaceted roles of mitochondria in melanoma.
  • To explore how mitochondrial alterations impact melanoma therapy response.
  • To identify emerging mitochondrial targets for clinical intervention.

Main Methods:

  • Literature review of recent studies on melanoma and mitochondria.
  • Analysis of research on mitochondrial dynamics and function in melanoma.
  • Synthesis of findings on mitochondria-targeted melanoma therapies.

Main Results:

  • Mitochondria play diverse roles in melanoma, influencing proliferation, survival, and drug resistance.
  • Specific mitochondrial pathways are altered during melanoma development.
  • Mitochondrial functions are being explored as targets for novel melanoma treatments.

Conclusions:

  • Targeting mitochondrial functions presents a promising avenue for melanoma treatment.
  • Further research into melanoma mitochondrial biology can drive therapeutic innovation.
  • Understanding mitochondria is key to overcoming melanoma resistance to therapy.