Mitochondria fragment and reassemble to initiate the formation and development of the nucleus
Hou, B.; Xu, Y.; Li, E.; Cao, P.; Liu, S.; Xi, Z.; Yang, H.; Huo, Y.; Che, Y.; Jiang, X.
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The function of nuclear-localized mitochondria remains unknown. We found that mitochondria assembled dense particles to fragment and disperse into the particles, which reassembled to initiate nuclear formation and development. Individually-formed nuclei in one single cell were joined together by mitochondrial fragmentation concurrently partitioning cytoplasm to form an intranuclear inclusion (INC), whose creation was not related to herniation or invagination of the cytoplasm. Along with the nuclear transition of a mitochondrion and its neighboring counterparts, the organelle included itself in the nucleus to become nuclear mitochondrion through peripherally assembling of dense particles. New medium reversed the nuclear formation of the organelles to recovery and re-establishment via the return of the particles, which consisted of dense microvesicles (MIVs).
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