Abstract
Mitochondria exist as dynamic networks that often change shape and subcellular distribution. The morphology of mitochondria within a cell is controlled by precisely regulated rates of organelle fusion and fission. Several reports have described dramatic alterations in mitochondrial morphology during the early stages of apoptosis: a fragmentation of the network and the cristae remodeling. However, whether this mitochondrial fragmentation is a required step for apoptosis is highly debated. In this review the recent progress in understanding the mechanisms governing mitochondrial morphology during apoptosis and the latest advances connecting the regulation of mitochondrial morphology with apoptosis are discussed.
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