Related Experiment Video
Updated: Jul 4, 2026

Dual-color Correlative Light and Electron Microscopy for the Visualization of Interactions between Mitochondria and Lysosomes
Published on: September 27, 2024
Correlated light and electron microscopy illuminates the role of mitochondrial inner membrane remodeling during
1Department of Biology, San Diego State University, San Diego, CA 92182-4614, USA. tfrey@sunstroke.sdsu.edu
Abstract:
In addition to their role in providing ATP for cellular functions via oxidative phosphorylation, mitochondria also play a critical role in initiating and/or regulating apoptosis through the release of proteins such as cytochrome c from intermembrane and intracristal compartments. The mechanism by which these proteins are able to cross the outer mitochondrial membrane has been a subject of controversy. This paper will review some recent results that demonstrate that inner mitochondrial membrane remodeling does occur during apoptosis in HeLa cells but does not appear to be a requirement for release of cytochrome c from intracristal compartments. Inner membrane remodeling does appear to be related to fragmentation of the mitochondrial matrix, and the form of the remodeling suggests a topological mechanism for inner membrane fission and fusion.
Related Concept Videos
The Inner Mitochondrial Membrane
Mitochondrial Membranes
Mitochondrial Membranes
The Intrinsic Apoptotic Pathway
Apoptosis
Cellular Injury V: Apoptosis and Autophagy
