PUBLICATION
Mutations in SLC25A46, encoding a UGO1-like protein, cause an optic atrophy spectrum disorder
- Authors
- Abrams, A.J., Hufnagel, R.B., Rebelo, A., Zanna, C., Patel, N., Gonzalez, M.A., Campeanu, I.J., Griffin, L.B., Groenewald, S., Strickland, A.V., Tao, F., Speziani, F., Abreu, L., Schüle, R., Caporali, L., La Morgia, C., Maresca, A., Liguori, R., Lodi, R., Ahmed, Z.M., Sund, K.L., Wang, X., Krueger, L.A., Peng, Y., Prada, C.E., Prows, C.A., Schorry, E.K., Antonellis, A., Zimmerman, H.H., Abdul-Rahman, O.A., Yang, Y., Downes, S.M., Prince, J., Fontanesi, F., Barrientos, A., Németh, A.H., Carelli, V., Huang, T., Zuchner, S., Dallman, J.E.
- ID
- ZDB-PUB-150715-10
- Date
- 2015
- Source
- Nature Genetics 47(8): 926-32 (Journal)
- Registered Authors
- Dallman, Julia
- Keywords
- none
- MeSH Terms
-
- Pedigree
- Mitochondrial Proteins/genetics*
- Mitochondrial Proteins/metabolism
- Male
- Charcot-Marie-Tooth Disease/genetics
- Charcot-Marie-Tooth Disease/metabolism
- Animals, Genetically Modified
- Muscle Proteins/genetics
- Muscle Proteins/metabolism
- Embryo, Nonmammalian/embryology
- Embryo, Nonmammalian/metabolism
- Embryo, Nonmammalian/ultrastructure
- Microscopy, Confocal
- Female
- Exome/genetics
- Genetic Predisposition to Disease/genetics*
- RNA Interference
- Mitochondrial Membranes/metabolism
- Chlorocebus aethiops
- Mutation*
- Animals
- Microscopy, Electron, Transmission
- Sequence Analysis, DNA
- Phosphate Transport Proteins/genetics*
- Phosphate Transport Proteins/metabolism
- Optic Atrophy, Autosomal Dominant/genetics*
- Optic Atrophy, Autosomal Dominant/metabolism
- Optic Atrophy, Autosomal Dominant/pathology
- Saccharomyces cerevisiae Proteins/genetics
- Saccharomyces cerevisiae Proteins/metabolism
- HEK293 Cells
- Protein Binding
- COS Cells
- Membrane Proteins/genetics
- Membrane Proteins/metabolism
- Zebrafish/embryology
- Zebrafish/metabolism
- Humans
- PubMed
- 26168012 Full text @ Nat. Genet.
Citation
Abrams, A.J., Hufnagel, R.B., Rebelo, A., Zanna, C., Patel, N., Gonzalez, M.A., Campeanu, I.J., Griffin, L.B., Groenewald, S., Strickland, A.V., Tao, F., Speziani, F., Abreu, L., Schüle, R., Caporali, L., La Morgia, C., Maresca, A., Liguori, R., Lodi, R., Ahmed, Z.M., Sund, K.L., Wang, X., Krueger, L.A., Peng, Y., Prada, C.E., Prows, C.A., Schorry, E.K., Antonellis, A., Zimmerman, H.H., Abdul-Rahman, O.A., Yang, Y., Downes, S.M., Prince, J., Fontanesi, F., Barrientos, A., Németh, A.H., Carelli, V., Huang, T., Zuchner, S., Dallman, J.E. (2015) Mutations in SLC25A46, encoding a UGO1-like protein, cause an optic atrophy spectrum disorder. Nature Genetics. 47(8):926-32.
Abstract
Dominant optic atrophy (DOA) and axonal peripheral neuropathy (Charcot-Marie-Tooth type 2, or CMT2) are hereditary neurodegenerative disorders most commonly caused by mutations in the canonical mitochondrial fusion genes OPA1 and MFN2, respectively. In yeast, homologs of OPA1 (Mgm1) and MFN2 (Fzo1) work in concert with Ugo1, for which no human equivalent has been identified thus far. By whole-exome sequencing of patients with optic atrophy and CMT2, we identified four families with recessive mutations in SLC25A46. We demonstrate that SLC25A46, like Ugo1, is a modified carrier protein that has been recruited to the outer mitochondrial membrane and interacts with the inner membrane remodeling protein mitofilin (Fcj1). Loss of function in cultured cells and in zebrafish unexpectedly leads to increased mitochondrial connectivity, while severely affecting the development and maintenance of neurons in the fish. The discovery of SLC25A46 strengthens the genetic overlap between optic atrophy and CMT2 while exemplifying a new class of modified solute transporters linked to mitochondrial dynamics.
Genes / Markers
Expression
Phenotype
Mutations / Transgenics
Human Disease / Model
Sequence Targeting Reagents
Fish
Orthology
Engineered Foreign Genes
Mapping