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Isolation and Functional Analysis of Mitochondria from Cultured Cells and Mouse Tissue
Published on: March 23, 2015
Mitochondria as ATP consumers in cellular pathology.
Christos Chinopoulos1, Vera Adam-Vizi
1Department of Medical Biochemistry, Semmelweis University, Neurobiochemical Group, Hungarian Academy of Sciences, Budapest, Hungary.
Biochimica Et Biophysica Acta
|September 1, 2009
Summary
Mitochondria normally produce ATP but can consume it in disease, hydrolyzing it via the F(o)F(1)-ATPase. This review explores conditions, mechanisms, and interventions for this pathological ATP consumption.
Area of Science:
- Mitochondrial physiology and bioenergetics
- Cellular pathology and disease mechanisms
Background:
- Mitochondria are central to cellular energy production via oxidative phosphorylation, generating adenosine triphosphate (ATP).
- Pathological conditions can induce mitochondria to consume ATP instead of producing it, exacerbating cellular dysfunction.
Purpose of the Study:
- To review the pathological conditions causing mitochondrial F(o)F(1)-ATPase to hydrolyze ATP.
- To examine factors governing F(o)F(1)-ATPase directionality and its role in cellular ATP imbalance.
- To discuss interventions targeting pathological ATP hydrolysis.
Main Methods:
- Literature review of pathological conditions, molecular mechanisms, and thermodynamic factors.
- Analysis of the role of adenine nucleotide translocase (ANT) and mitochondrial permeability transition pore (mPTP).
- Examination of the impact on glycolytic ATP production and potential therapeutic strategies.
Main Results:
- Pathological states can trigger reverse operation of the F(o)F(1)-ATPase, leading to ATP hydrolysis.
- ANT facilitates adenine nucleotide flux, while mPTP can bypass ANT, directing ATP to the hydrolyzing F(o)F(1)-ATPase.
- This ATP consumption impacts cellular energy balance and can affect glycolysis.
Conclusions:
- Understanding the mechanisms of pathological ATP hydrolysis by mitochondrial F(o)F(1)-ATPase is crucial for addressing cellular dysfunction.
- Targeting the F(o)F(1)-ATPase, ANT, and mPTP offers potential therapeutic avenues.
- Interventions to limit ATP hydrolysis could mitigate disease progression.
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