Highlighting the Transition of Mitochondrial Cytochrome C by Immuno-transmission Electron Microscopy

Protein location changes in the microstructure often present a precise regulation mechanism at the level of pathological organelles. How to accurately capture the location of this organelle protein transfer has positive significance and value for the diagnosis and treatment of diseases. Mitochondria play a central role in necrosis and the intrinsic pathway of apoptosis. Under normal conditions, cytochrome c (Cyt c) only exists between the inner and outer membranes of mitochondria and in the nucleus. When cells undergo apoptosis, the mitochondrial inner membrane permeability is altered, and Cyt c is released from mitochondria into the cytoplasm. In this study, a rat model of cerebral ischemia-reperfusion injury was established, and the micromorphological changes of neurons undergoing apoptosis were shown by immuno-transmission electron microscopy. Additionally, it shows the vision of immunogold labeling Cyt c transfer from the mitochondrial matrix to the cytoplasm after cerebral ischemia-reperfusion injury more precisely. The immuno-transmission electron microscopy technique presented in this protocol is suitable for the demonstration of any protein position transitions at the microscopic level.