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Related Concept Videos

Adaptive Mechanisms in Cancer Cells02:53

Adaptive Mechanisms in Cancer Cells

Cancer cells accumulate genetic changes at an abnormally rapid rate due to the defects in the DNA repair mechanisms. From an evolutionary perspective, such genetic instability is advantageous for cancer development. Mutant cell lines accumulate a series of beneficial mutations that contribute to their progression into cancer.
Some of the advantages that cancer cells have on normal cells include - enhanced ability to divide without terminally differentiating, induce new blood vessel formation,...
Adaptive Mechanisms in Cancer Cells02:53

Adaptive Mechanisms in Cancer Cells

Cancer cells accumulate genetic changes at an abnormally rapid rate due to the defects in the DNA repair mechanisms. From an evolutionary perspective, such genetic instability is advantageous for cancer development. Mutant cell lines accumulate a series of beneficial mutations that contribute to their progression into cancer.
Some of the advantages that cancer cells have on normal cells include - enhanced ability to divide without terminally differentiating, induce new blood vessel formation,...
Electron Transport Chain: Complex I and II01:46

Electron Transport Chain: Complex I and II

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...
mTOR Signaling and Cancer Progression03:03

mTOR Signaling and Cancer Progression

The mammalian target of rapamycin or mTOR protein was discovered in 1994 due to its direct interaction with rapamycin. The protein gets its name from a yeast homolog called TOR. The mTOR protein complex in mammalian cells plays a major role in balancing anabolic processes such as the synthesis of proteins, lipids, and nucleotides and catabolic processes, such as autophagy in response to environmental cues, such as availability of nutrients and growth factors.
The mTOR pathway or the...
mTOR Signaling and Cancer Progression03:03

mTOR Signaling and Cancer Progression

The mammalian target of rapamycin or mTOR protein was discovered in 1994 due to its direct interaction with rapamycin. The protein gets its name from a yeast homolog called TOR. The mTOR protein complex in mammalian cells plays a major role in balancing anabolic processes such as the synthesis of proteins, lipids, and nucleotides and catabolic processes, such as autophagy in response to environmental cues, such as availability of nutrients and growth factors.
The mTOR pathway or the...
Cancers Originate from Somatic Mutations in a Single Cell02:21

Cancers Originate from Somatic Mutations in a Single Cell

Cancer arises from mutations in the critical genes that allow healthy cells to escape cell cycle regulation and acquire the ability to proliferate indefinitely. Though originating from a single mutation event in one of the originator cells, cancer progresses when the mutant cell lines continue to gain more and more mutations, and finally, become malignant. For example, chronic myelogenous leukemia (CML) develops initially as a non-lethal increase in white blood cells, which progressively...

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Transmitochondrial Cybrid Generation Using Cancer Cell Lines
07:49

Transmitochondrial Cybrid Generation Using Cancer Cell Lines

Published on: March 17, 2023

Oxidative phosphorylation in cancer cells.

Giancarlo Solaini1, Gianluca Sgarbi, Alessandra Baracca

  • 1Department of Biochemistry "G. Moruzzi", University of Bologna, Via Irnerio 48, 40126 Bologna, Italy. giancarlo.solaini@unibo.it

Biochimica Et Biophysica Acta
|September 21, 2010
PubMed
Summary

Mitochondrial metabolism is crucial for cancer cell survival and proliferation. Understanding tumor mitochondria

Area of Science:

  • Oncology
  • Cell Biology
  • Biochemistry

Background:

  • Mitochondrial metabolism significantly influences cancer cell life and proliferation.
  • Altered mitochondrial function and resistance to apoptosis are linked in cancer.
  • Cancer cells exhibit increased glycolysis and lactate production, alongside potential oxidative phosphorylation deficits.

Purpose of the Study:

  • To review the peculiarities of tumor mitochondrial bioenergetics.
  • To explore the link between mitochondrial bioenergetics and cancer cell metabolism.
  • To highlight recent advances in understanding cancer mitochondria.

Main Methods:

  • Literature review of evidence on mitochondrial metabolism in cancer.
  • Analysis of signal transduction pathways affecting mitochondrial proteins.

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Transmitochondrial Cybrid Generation Using Cancer Cell Lines
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  • Examination of mitochondrial roles in cell life, death, and tumor growth.

    • Main Results:

    • Mitochondrial proteins (e.g., UCP2, MPTP, oxphos complexes, Bcl-2 family) are altered in cancer.
    • Mitochondrial bioenergetics and dynamics are implicated in cancer cell survival and death.
    • Pathophysiological differences between cancer and normal tissue mitochondria are key.

    Conclusions:

    • Understanding tumor mitochondria is crucial for developing novel cancer treatments.
    • Targeting peculiar mitochondrial functions offers new therapeutic strategies.
    • Further research into cancer cell mitochondrial bioenergetics is warranted for prevention and treatment.