Related Experiment Video
Updated: Mar 23, 2026

Assessment of Open Probability of the Mitochondrial Permeability Transition Pore in the Setting of Coenzyme Q Excess
Published on: June 1, 2022
[Induction of Unspecific Permeabilization of Mitochondrial Membrane and Its Role in Cell Death]
E A Novoderezhkina1, B D Zhivotovsky1,2, V G Gogvadze1,2,3
1Faculty of Basic Medicine, M.V. Lomonosov Moscow State University, 119991 Moscow, Russia.
Abstract:
Mitochondria participate in various vital cellular processes. Violation of their functions can lead to the development of cardiovascular and neurodegenerative diseases and malignancies. One of the key events responsible for mitochondrial damage-induction of Ca^(2+)-dependent mitochondrial permeability transition, due to the opening of a nonspecific pore in the inner mitochondrial membrane. Despite active studies of pore components, its detailed structure has not yet been established. This review analyzes possible constituents and regulators of the pore, the role of the pore in various pathologies, and hypotheses that explain the organization of the pores. Elucidation of these questions can help developing strategies for the treatment of a wide range of pathologies-from Alzheimer and Parkinson's disease to cancer.
Insights
Mitochondrial dysfunction, particularly the opening of a calcium-dependent pore, contributes to severe diseases. Understanding this pore
Area of Science:
- Cellular Biology
- Mitochondrial Medicine
- Pathophysiology
Background:
- Mitochondria are crucial for cellular function.
- Mitochondrial dysfunction is linked to cardiovascular diseases, neurodegenerative disorders (like Alzheimer's and Parkinson's disease), and cancer.
- The mitochondrial permeability transition pore (MPTP) opening is a key event in mitochondrial damage.
Purpose of the Study:
- To review the known components and regulators of the MPTP.
- To analyze the role of MPTP in various pathologies.
- To discuss hypotheses regarding the MPTP's structural organization.
Main Methods:
- Literature review
- Analysis of existing research on MPTP components and function
- Synthesis of hypotheses on pore structure and regulation
Main Results:
- The detailed structure of the MPTP remains elusive despite extensive research.
- The review consolidates current knowledge on potential MPTP constituents and regulatory factors.
- The critical role of MPTP in disease pathogenesis is highlighted.
Conclusions:
- Further elucidation of MPTP structure and function is essential.
- Understanding the MPTP could lead to novel therapeutic strategies for major diseases.
- Targeting the MPTP may offer treatment avenues for conditions ranging from neurodegeneration to cancer.
Related Concept Videos
The Intrinsic Apoptotic Pathway
Overview of Cell Death
Cell death was observed in the early 19th century, but there was no experimental evidence to prove it. In 1842, Carl Vogt first discovered cell death in a metamorphic toad; however, it was not termed ‘cell death.’ Scientists discovered different cell death pathways only in the...
Necrosis
Morphological Manifestations of Necrosis
Necrotic cells show different types of morphological appearance depending on the type of tissue and infection. In coagulative necrosis, cells become...
Apoptosis
The Extrinsic Apoptotic Pathway
Autophagic Cell Death
Autophagy and Apoptosis
Autophagy can activate apoptosis. In normal conditions, the autophagy activating protein Beclin-1 and...

