Regulation of Mitochondrial Genome Inheritance by Autophagy and Ubiquitin-proteasome System: Implications for Health, Fitness, and Fertility
Overview
Biotechnology
General Medicine
Affiliations
Mitochondria, the energy-generating organelles, play a role in numerous cellular functions including adenosine triphosphate (ATP) production, cellular homeostasis, and apoptosis. Maternal inheritance of mitochondria and mitochondrial DNA (mtDNA) is universally observed in humans and most animals. In general, high levels of mitochondrial heteroplasmy might contribute to a detrimental effect on fitness and disease resistance. Therefore, a disposal of the sperm-derived mitochondria inside fertilized oocytes assures normal preimplantation embryo development. Here we summarize the current research and knowledge concerning the role of autophagic pathway and ubiquitin-proteasome-dependent proteolysis in sperm mitophagy in mammals, including humans. Current data indicate that sperm mitophagy inside the fertilized oocyte could occur along multiple degradation routes converging on autophagic clearance of paternal mitochondria. The influence of assisted reproductive therapies (ART) such as intracytoplasmic sperm injection (ICSI), mitochondrial replacement (MR), and assisted fertilization of oocytes from patients of advanced reproductive age on mitochondrial function, inheritance, and fitness and for the development and health of ART babies will be of particular interest to clinical audiences. Altogether, the study of sperm mitophagy after fertilization has implications in the timing of evolution and developmental and reproductive biology and in human health, fitness, and management of mitochondrial disease.
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Idrees M, Haider Z, Perera C, Ullah S, Lee S, Lee S Front Cell Dev Biol. 2025; 12:1531378.
PMID: 39897080 PMC: 11782182. DOI: 10.3389/fcell.2024.1531378.
Zigo M, Netherton J, Zelenkova N, Kerns K, Kraus V, Postlerova P Sci Rep. 2024; 14(1):20159.
PMID: 39215164 PMC: 11364869. DOI: 10.1038/s41598-024-71056-4.
The impact of mitochondrial impairments on sperm function and male fertility: a systematic review.
Vahedi Raad M, Firouzabadi A, Tofighi Niaki M, Henkel R, Fesahat F Reprod Biol Endocrinol. 2024; 22(1):83.
PMID: 39020374 PMC: 11253428. DOI: 10.1186/s12958-024-01252-4.
Mitochondrial DNA: Inherent Complexities Relevant to Genetic Analyses.
Ferreira T, Rodriguez S Genes (Basel). 2024; 15(5).
PMID: 38790246 PMC: 11121663. DOI: 10.3390/genes15050617.
Yang D, Mu Y, Wang J, Zou W, Zou H, Yang H Heliyon. 2023; 9(9):e19366.
PMID: 37681148 PMC: 10480597. DOI: 10.1016/j.heliyon.2023.e19366.