Mutations in NHLRC1 cause progressive myoclonus epilepsy

被引:230
作者
Chan, EM
Young, EJ
Ianzano, L
Munteanu, I
Zhao, XC
Christopoulos, CC
Avanzini, G
Elia, M
Ackerley, CA
Jovic, NJ
Bohlega, S
Andermann, E
Rouleau, GA
Delgado-Escueta, AV
Minassian, BA
Scherer, SW
机构
[1] Hosp Sick Children, Res Inst, Program Genet & Genom Biol, Toronto, ON M5G 1X8, Canada
[2] Univ Toronto, Dept Mol & Med Genet, Toronto, ON M5G 1X8, Canada
[3] Inst Nazl Neurol, I-20133 Milan, Italy
[4] Oasi Inst Res Mental Retardat & Brain Aging, Dept Neurol, I-94018 Troina, Italy
[5] Hosp Sick Children, Dept Pathol & Lab Med, Toronto, ON M5G 1X8, Canada
[6] Clin Neurol & Psychiat Children & Youth, YU-11000 Belgrade, Serbia Monteneg, Serbia
[7] King Faisal Specialist Hosp & Res Ctr, Dept Neurosci, Riyadh 11211, Saudi Arabia
[8] McGill Univ, Montreal Neurol Inst, Neurogenet Unit, Montreal, PQ H3A 2B4, Canada
[9] McGill Univ, Montreal Gen Hosp, Ctr Hlth, Res Inst Ctr Res Neurosci, Montreal, PQ H3G 1A4, Canada
[10] Univ Calif Los Angeles, Sch Med, W Los Angeles DVA Med Ctr, Dept Neurol,Comprehens Epilepsy Program, Los Angeles, CA 90073 USA
[11] Univ Calif Los Angeles, Sch Med, W Los Angeles DVA Med Ctr, Brain Res Inst, Los Angeles, CA 90073 USA
[12] Hosp Sick Children, Dept Pediat, Div Neurol, Toronto, ON M5G 1X8, Canada
关键词
D O I
10.1038/ng1238
中图分类号
Q3 [遗传学];
学科分类号
071007 ; 090102 ;
摘要
Lafora progressive myoclonus epilepsy is characterized by pathognomonic endoplasmic reticulum (ER)-associated polyglucosan accumulations. We previously discovered that mutations in EPM2A cause Lafora disease. Here, we identify a second gene associated with this disease, NHLRC1 ( also called EPM2B), which encodes malin, a putative E3 ubiquitin ligase with a RING finger domain and six NHL motifs. Laforin and malin colocalize to the ER, suggesting they operate in a related pathway protecting against polyglucosan accumulation and epilepsy.
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收藏
页码:125 / 127
页数:3
相关论文
共 17 条
[1]   Corpora-amylacea and the family of polyglucosan diseases [J].
Cavanagh, JB .
BRAIN RESEARCH REVIEWS, 1999, 29 (2-3) :265-295
[2]   Genetic mapping of a new Lafora progressive myoclonus epilepsy locus (EPM2B) on 6p22 [J].
Chan, EM ;
Bulman, DE ;
Paterson, AD ;
Turnbull, J ;
Andermann, E ;
Andermann, F ;
Rouleau, GA ;
Delgado-Escueta, AV ;
Scherer, SW ;
Minassian, BA .
JOURNAL OF MEDICAL GENETICS, 2003, 40 (09) :671-675
[3]   Ubiquitination: RING for destruction? [J].
Freemont, PS .
CURRENT BIOLOGY, 2000, 10 (02) :R84-R87
[4]   Laforin, defective in the progressive myoclonus epilepsy of Lafora type, is a dual-specificity phosphatase associated with polyribosomes [J].
Ganesh, S ;
Agarwala, KL ;
Ueda, K ;
Akagi, T ;
Shoda, K ;
Usui, T ;
Hashikawa, T ;
Osada, H ;
Delgado-Escueta, AV ;
Yamakawa, K .
HUMAN MOLECULAR GENETICS, 2000, 9 (15) :2251-2261
[5]   The Lafora disease gene product laforin interacts with HIRIP5, a phylogenetically conserved protein containing a NIfU-like domain [J].
Ganesh, S ;
Tsurutani, N ;
Suzuki, T ;
Ueda, K ;
Agarwala, KL ;
Osada, H ;
Delgado-Escueta, AV ;
Yamakawa, K .
HUMAN MOLECULAR GENETICS, 2003, 12 (18) :2359-2368
[6]   Targeted disruption of the Epm2a gene causes formation of Lafora inclusion bodies, neurodegeneration, ataxia, myoclonus epilepsy and impaired behavioral response in mice [J].
Ganesh, S ;
Delgado-Escueta, AV ;
Sakamoto, T ;
Avila, MR ;
Machado-Salas, J ;
Hoshii, Y ;
Akagi, T ;
Gomi, H ;
Suzuki, T ;
Amano, K ;
Agarwala, KL ;
Hasegawa, Y ;
Bai, DS ;
Ishihara, T ;
Hashikawa, T ;
Itohara, S ;
Cornford, EM ;
Niki, H ;
Yamakawa, K .
HUMAN MOLECULAR GENETICS, 2002, 11 (11) :1251-1262
[7]   Alternative splicing modulates subcellular localization of laforin [J].
Ganesh, S ;
Suzuki, T ;
Yamakawa, K .
BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS, 2002, 291 (05) :1134-1137
[8]   U-box proteins as a new family of ubiquitin ligases [J].
Hatakeyama, S ;
Nakayama, KI .
BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS, 2003, 302 (04) :635-645
[9]   Identification of a novel protein interacting with laforin, the EPM2A progressive myoclonus epilepsy gene product [J].
Ianzano, L ;
Zhao, XC ;
Minassian, BA ;
Scherer, SW .
GENOMICS, 2003, 81 (06) :579-587
[10]   Article on the histopathology of myoclonic epilepsy. [J].
Lafora, GR ;
Glueck, B .
ZEITSCHRIFT FUR DIE GESAMTE NEUROLOGIE UND PSYCHIATRIE, 1911, 6 :1-14