Abstract:
:In almost all animals, mitochondrial DNA (mtDNA) is transmitted only from the female, while the paternal mitochondria and mtDNA are thought to be eliminated during early embryogenesis. Autophagy is involved in the elimination of sperm mitochondria and mtDNA in early embryos in Caenorhabditis elegans; however, solid evidence is still lacking in mammals. Recently, we found that despite the fact that some autophagy-related proteins, such as SQSTM1 and LC3 could localize nearby sperm mitochondria before the 2-cell stage, autophagy did not participate in the elimination of sperm mitochondria and mtDNA. Instead, the pre-elimination of sperm mtDNA before fertilization and the restriction of sperm mitochondria in one blastomere before 4-cell stage embryos are the most important mechanisms of maternal mitochondrial inheritance in mice.
journal_name
Autophagyjournal_title
Autophagyauthors
Luo SM,Sun QYdoi
10.4161/auto.26302subject
Has Abstractpub_date
2013-12-01 00:00:00pages
2156-7issue
12eissn
1554-8627issn
1554-8635pii
26302journal_volume
9pub_type
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