Abstract
Charcot-Marie-Tooth disease type 2D is a hereditary axonal and glycyl-tRNA synthetase (GARS)-associated neuropathy that is caused by a mutation in GARS. Here, we report a novel GARS-associated mouse neuropathy model using an adenoviral vector system that contains a neuronal-specific promoter. In this model, we found that wild-type GARS is distributed to peripheral axons, dorsal root ganglion (DRG) cell bodies, central axon terminals, and motor neuron cell bodies. In contrast, GARS containing a G240R mutation was localized in DRG and motor neuron cell bodies, but not axonal regions, in vivo. Thus, our data suggest that the disease-causing G240R mutation may result in a distribution defect of GARS in peripheral nerves in vivo. Furthermore, a distributional defect may be associated with axonal degradation in GARS-associated neuropathies.
References
Antonellis A, Green ED (2008) The role of aminoacyl-tRNA synthetases in genetic diseases. Annu Rev Genomics Hum Genet 9:87–107
Antonellis A, Ellsworth RE, Sambuughin N, Puls I, Abel A, Lee-Lin SQ, Jordanova A, Kremensky I, Christodoulou K, Middleton LT, Sivakumar K, Ionasescu V, Funalot B, Vance JM, Goldfarb LG, Fischbeck KH, Green ED (2003) Glycyl tRNA synthetase mutations in Charcot-Marie-Tooth disease type 2D and distal spinal muscular atrophy type V. Am J Hum Genet 72:1293–1299
Antonellis A, Lee-Lin SQ, Wasterlain A, Leo P, Quezado M, Goldfarb LG, Myung K, Burgess S, Fischbeck KH, Green ED (2006) Functional analyses of glycyl-tRNA synthetase mutations suggest a key role for tRNA-charging enzymes in peripheral axons. J Neurosci 26:10397–10406
Bellier JP, Kimura H (2007) Acetylcholine synthesis by choline acetyltransferase of a peripheral type as demonstrated in adult rat dorsal root ganglion. J Neurochem 101:1607–1618
Christodoulou K, Kyriakides T, Hristova AH, Georgiou DM, Kalaydjieva L, Yshpekova B, Ivanova T, Weber JL, Middleton LT (1995) Mapping of a distal form of spinal muscular atrophy with upper limb predominance to chromosome 7p. Hum Mol Genet 4:1629–1632
Ge Q, Trieu EP, Targoff IN (1994) Primary structure and functional expression of human Glycyl-tRNA synthetase, an autoantigen in myositis. J Biol Chem 269:28790–28797
Hamaguchi A, Ishida C, Iwasa K, Abe A, Yamada M (2010) Charcot-Marie-Tooth disease type 2D with a novel glycyl-tRNA synthetase gene (GARS) mutation. J Neurol 257:1202–1204
Ionasescu V, Searby C, Sheffield VC, Roklina T, Nishimura D, Ionasescu R (1996) Autosomal dominant Charcot-Marie-Tooth axonal neuropathy mapped on chromosome 7p (CMT2D). Hum Mol Genet 5:1373–1375
Lönnerberg P, Schoenherr CJ, Anderson DJ, Ibáñez CF (1996) Cell type-specific regulation of choline acetyltransferase gene expression. Role of the neuron-restrictive silencer element and cholinergic-specific enhancer sequences. J Biol Chem 271:33358–33365
Misawa H, Ishii K, Deguchi T (1992) Gene expression of mouse choline acetyltransferase. Alternative splicing and identification of a highly active promoter region. J Biol Chem 267:20392–20399
Motley WW, Talbot K, Fischbeck KH (2010) GARS axonopathy: not every neuron’s cup of tRNA. Trends Neurosci 33:59–66
Motley WW, Seburn KL, Nawaz MH, Miers KE, Cheng J, Antonellis A, Green ED, Talbot K, Yang XL, Fischbeck KH, Burgess RW (2011) Charcot-Marie-Tooth-linked mutant GARS is toxic to peripheral neurons independent of wild-type GARS levels. PLoS Genet 7:e1002399
Nangle LA, Zhang W, Xie W, Yang XL, Schimmel P (2007) Charcot-Marie-Tooth disease-associated mutant tRNA synthetases linked to altered dimer interface and neurite distribution defect. Proc Natl Acad Sci USA 104:11239–11244
Nyberg-Hoffman C, Shabram P, Li W, Giroux D, Aguilar-Cordova E (1997) Sensitivity and reproducibility in adenoviral infectious titer determination. Nat Med 3:808–811
Sivakumar K, Kyriakides T, Puls I, Nicholson GA, Funalot B, Antonellis A, Sambuughin N, Christodoulou K, Beggs JL, Zamba-Papanicolaou E, Ionasescu V, Dalakas MC, Green ED, Fischbeck KH, Goldfarb LG (2005) Phenotypic spectrum of disorders associated with glycyl-tRNA synthetase mutations. Brain 128:2304–2314
Stum M, McLaughlin HM, Kleinbrink EL, Miers KE, Ackerman SL, Seburn KL, Antonellis A, Burgess RW (2011) An assessment of mechanisms underlying peripheral axonal degeneration caused by aminoacyl-tRNA synthetase mutations. Mol Cell Neurosci 46:432–443
Acknowledgments
We thank Dr. Paul Schimmel (Scripps Research Institute; La Jolla, CA) for kindly providing the WT and G240R mutant GARS clones. This work was supported by a Global Frontier Project Grant (2012M3A6A2011-0032149) from the National Research Foundation funded by the Ministry of Education, Science and Technology of Korea and a National Research Foundation of Korea (NRF) Grant funded by the Korean government (MEST; No. 20120009380).
Author information
Authors and Affiliations
Corresponding authors
Additional information
Ah Jung Seo and Youn Ho Shin have contributed equally to this work.
Rights and permissions
About this article
Cite this article
Seo, A.J., Shin, Y.H., Lee, S.J. et al. A novel adenoviral vector-mediated mouse model of Charcot-Marie-Tooth type 2D (CMT2D). J Mol Hist 45, 121–128 (2014). https://doi.org/10.1007/s10735-013-9537-0
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10735-013-9537-0