Related Experiment Video
Updated: Jan 5, 2026
Assessment of Open Probability of the Mitochondrial Permeability Transition Pore in the Setting of Coenzyme Q Excess
Published on: June 1, 2022
The mitochondrial permeability transition pore in cell death: A promising drug binding bioarchitecture
1Department of Veterinary Medical Sciences, University of Bologna, Bologna, Italy.
Abstract:
Bioenergetic failure often features programmed cell death involved in some severe pathologies. When the cell is fated to die, the inner mitochondrial membrane becomes permeable to ions and solutes, due to the formation and opening of a channel known as mitochondrial permeability transition pore (mPTP). Up to now, the still-elusive mPTP structure and mechanism prevented any attempt to identify/design drugs to rule its formation and limit cell death. Latest advances, which strongly suggest that the F1 FO -ATPase can coincide with the mPTP, open new perspectives in therapy. Compounds targeting and inhibiting cyclophilin D, a known mPTP promoter, could be exploited to block mPTP formation. Moreover, if the mPTP-F1 FO -ATPase connection will be consolidated, selected F1 FO -ATPase inhibitors could represent novel therapeutic options to attenuate mPTP-related diseases by directly acting on mPTP molecular mechanism. This intriguing perspective, which raises new hopes to counteract mPTP-related diseases, stimulates further studies to clarify the mPTP architecture and mechanism.
Insights
Programmed cell death involves mitochondrial permeability transition pore (mPTP) opening. Recent findings suggest F1F0-ATPase may be the mPTP, offering new therapeutic targets for mPTP-related diseases.
Area of Science:
- Mitochondrial biology
- Cell death pathways
- Biochemistry
Background:
- Bioenergetic failure is linked to programmed cell death in severe pathologies.
- Mitochondrial permeability transition pore (mPTP) opening is a key event in cell death.
- The precise structure and mechanism of mPTP remain largely unknown, hindering therapeutic development.
Purpose of the Study:
- To explore the potential role of F1F0-ATPase as the mPTP.
- To identify novel therapeutic strategies for mPTP-related diseases.
- To elucidate the molecular mechanism of mPTP formation and regulation.
Main Methods:
- Review of recent advances suggesting F1F0-ATPase involvement in mPTP.
- Discussion of therapeutic potential of targeting cyclophilin D.
- Exploration of F1F0-ATPase inhibitors as therapeutic agents.
Main Results:
- Latest research indicates a strong possibility that F1F0-ATPase constitutes the mPTP.
- Cyclophilin D inhibitors show promise in blocking mPTP formation.
- F1F0-ATPase inhibitors could offer direct therapeutic intervention in mPTP-related diseases.
Conclusions:
- The potential identification of F1F0-ATPase as the mPTP opens new therapeutic avenues.
- Targeting cyclophilin D or F1F0-ATPase may provide effective treatments for pathologies involving mPTP.
- Further research is crucial to confirm the mPTP structure and mechanism.
More Related Videos
13:42Multi-parameter Measurement of the Permeability Transition Pore Opening in Isolated Mouse Heart Mitochondria
Published on: September 7, 2012
08:43Simultaneous Measurement of Mitochondrial Calcium and Mitochondrial Membrane Potential in Live Cells by Fluorescent Microscopy
Published on: January 24, 2017
Related Concept Videos
01:45Mitochondrial Membranes
01:30Overview 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...
01:28The Inner Mitochondrial Membrane
01:31The Intrinsic Apoptotic Pathway
01:19Translocation of Proteins into the Mitochondria
Sorting of outer membrane proteins:
Mitochondrial outer membrane proteins are of two types: the transmembrane, beta-barrel porins, and the membrane-anchored, alpha-helical proteins. Beta-barrel porin precursors are translocated by the TOM complex and inserted into the outer mitochondrial membrane by the SAM complex. In contrast,...
01:17Pore Transport and Ion-Pair Transport
Pore transport, also known as convective transport, is a process where small molecules like urea, water, and sugars rapidly cross cell membranes as though there were channels or pores in the membrane. Although direct microscopic evidence is limited but the concept of pores or channels is widely accepted based on physiological evidence. Despite the lack of direct...