Maintenance of mitochondrial membrane integrity is essential for mitochondrial function and neuronal viability. Apoptotic stimulus or calcium overload leads to mitochondrial permeability transition pore (mPTP) opening and induces mitochondrial swelling, a common feature of mitochondrial membrane permeabilization. The fi rst phenomenon can be evaluated in cells loaded with the dye calcein -AM quenched by cobalt, and mitochondrial swelling can be detected by electron microscopy through the analysis of mitochondrial membrane integrity. Here, we describe a live cell imaging assay to detect mitochondrial permeability transition and the development of a detailed analysis of morphological and ultrastructural changes that mitochondria undergo during this process.
CITATION STYLE
Arrázola, M. S., & Inestrosa, N. C. (2015). Monitoring mitochondrial membranes permeability in live neurons and mitochondrial swelling through electron microscopy analysis. Methods in Molecular Biology, 1254, 87–97. https://doi.org/10.1007/978-1-4939-2152-2_7
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