期刊
ANNALS OF CLINICAL AND TRANSLATIONAL NEUROLOGY
卷 6, 期 8, 页码 1533-1540出版社
WILEY
DOI: 10.1002/acn3.50821
关键词
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资金
- Fondazione del Monte
- Telethon Italy [GTB12001]
- Spanish Government [MINECO BFU2017-84264-P]
- Fundacion Inocente Inocente
In 2015-2016, we and others reported ALDH18A1 mutations causing dominant (SPG9A) or recessive (SPG9B) spastic paraplegia. In vitro production of the ALDH18A1 product, Delta(1)-pyrroline-5-carboxylate synthetase (P5CS), appeared necessary for cracking SPG9 disease-causing mechanisms. We now describe a baculovirus-insect cell system that yields mgs of pure human P5CS and that has proven highly valuable with two novel P5CS mutations reported here in new SPG9B patients. We conclude that both mutations are disease-causing, that SPG9B associates with partial P5CS deficiency and that it is clinically more severe than SPG9A, as reflected in onset age, disability, cognitive status, growth, and dysmorphic traits.
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