Suehiro Yuji
Department Research Institutes and Facilities, Research Institutes and Facilities Position Assistant Professor |
|
Article types | Original article |
Language | English |
Peer review | Peer reviewed |
Title | Mitochondrial endonuclease G mediates breakdown of paternal mitochondria upon fertilization. |
Journal | Formal name:Science (New York, N.Y.) Abbreviation:Science ISSN code:(1095-9203)0036-8075(Linking) |
Domestic / Foregin | Foregin |
Volume, Issue, Page | 353(6297),pp.394-399 |
Author and coauthor | Zhou Qinghua, Li Haimin, Li Hanzeng, Nakagawa Akihisa, Lin Jason L J, Lee Eui-Seung, Harry Brian L, Skeen-Gaar Riley Robert, Suehiro Yuji, William Donna, Mitani Shohei, Yuan Hanna S, Kang Byung-Ho, Xue Ding |
Publication date | 2016/07 |
Summary | Mitochondria are inherited maternally in most animals, but the mechanisms of selective paternal mitochondrial elimination (PME) are unknown. While examining fertilization in Caenorhabditis elegans, we observed that paternal mitochondria rapidly lose their inner membrane integrity. CPS-6, a mitochondrial endonuclease G, serves as a paternal mitochondrial factor that is critical for PME. We found that CPS-6 relocates from the intermembrane space of paternal mitochondria to the matrix after fertilization to degrade mitochondrial DNA. It acts with maternal autophagy and proteasome machineries to promote PME. Loss of cps-6 delays breakdown of mitochondrial inner membranes, autophagosome enclosure of paternal mitochondria, and PME. Delayed removal of paternal mitochondria causes increased embryonic lethality, demonstrating that PME is important for normal animal development. Thus, CPS-6 functions as a paternal mitochondrial degradation factor during animal development. |
DOI | 10.1126/science.aaf4777 |
PMID | 27338704 |