期刊
JOURNAL OF INHERITED METABOLIC DISEASE
卷 44, 期 2, 页码 325-342出版社
WILEY
DOI: 10.1002/jimd.12324
关键词
animal models; heteroplasmy; homoplasmy; mitochondrial disease; mitochondrial DNA
资金
- Marie-Sklodowska-Curie ITN European Training Network [EU 721757]
- Max-Planck-Gesellschaft
- United Mitochondrial Disease Foundation [13-053R]
Mitochondrial disorders, a class of heritable diseases, can manifest in various ways and at different stages of life. While nuclear DNA plays a vital role in these diseases, mutations in the mtDNA can also cause heritable conditions. Animal models for studying these diseases have been rare due to challenges in editing animal mtDNA.
Mitochondrial disorders make up a large class of heritable diseases that cause a broad array of different human pathologies. They can affect many different organ systems, or display very specific tissue presentation, and can lead to illness either in childhood or later in life. While the over 1200 genes encoded in the nuclear DNA play an important role in human mitochondrial disease, it has been known for over 30 years that mutations of the mitochondria's own small, multicopy DNA chromosome (mtDNA) can lead to heritable human diseases. Unfortunately, animal mtDNA has resisted transgenic and directed genome editing technologies until quite recently. As such, animal models to aid in our understanding of these diseases, and to explore preclinical therapeutic research have been quite rare. This review will discuss the unusual properties of animal mitochondria that have hindered the generation of animal models. It will also discuss the existing mammalian models of human mtDNA disease, describe the methods employed in their generation, and will discuss recent advances in the targeting of DNA-manipulating enzymes to the mitochondria and how these may be employed to generate new models.
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