Human TUBB3 mutations perturb microtubule dynamics, kinesin interactions, and axon guidance.
Human TUBB3 mutations perturb microtubule dynamics, kinesin interactions, and axon guidance.
复制标题
DOI:
10.1016/j.cell.2009.12.011
复制
发表时间:
2010-01-08
期刊:
影响因子:
64.5
通讯作者:
Engle EC
中科院分区:
文献类型:
--
作者:
Tischfield MA;Baris HN;Wu C;Rudolph G;Van Maldergem L;He W;Chan WM;Andrews C;Demer JL;Robertson RL;Mackey DA;Ruddle JB;Bird TD;Gottlob I;Pieh C;Traboulsi EI;Pomeroy SL;Hunter DG;Soul JS;Newlin A;Sabol LJ;Doherty EJ;de Uzcátegui CE;de Uzcátegui N;Collins ML;Sener EC;Wabbels B;Hellebrand H;Meitinger T;de Berardinis T;Magli A;Schiavi C;Pastore-Trossello M;Koc F;Wong AM;Levin AV;Geraghty MT;Descartes M;Flaherty M;Jamieson RV;Møller HU;Meuthen I;Callen DF;Kerwin J;Lindsay S;Meindl A;Gupta ML Jr;Pellman D;Engle EC
We report that eight heterozygous missense mutations in TUBB3, encoding the neuron-specific β-tubulin isotype III, result in a spectrum of human nervous system disorders we now call the TUBB3 syndromes. Each mutation causes the ocular motility disorder CFEOM3, whereas some also result in intellectual and behavioral impairments, facial paralysis, and/or later-onset axonal sensorimotor polyneuropathy. Neuroimaging reveals a spectrum of abnormalities including hypoplasia of oculomotor nerves, and dysgenesis of the corpus callosum, anterior commissure, and corticospinal tracts. A knock-in disease mouse model reveals axon guidance defects without evidence of cortical cell migration abnormalities. We show the disease-associated mutations can impair tubulin heterodimer formation in vitro, although folded mutant heterodimers can still polymerize into microtubules. Modeling each mutation in yeast tubulin demonstrates that all alter dynamic instability whereas a subset disrupts the interaction of microtubules with kinesin motors. These findings demonstrate normal TUBB3 is required for axon guidance and maintenance in mammals.
登录
查看更多内容
影响因子:
5.3
作者:
Mackey, DA;Chan, WM;Engle, EC
通讯作者:
Engle, EC
影响因子:
7.8
作者:
Lopata, M A;Cleveland, D W
通讯作者:
Cleveland, D W
DOI:
10.1083/jcb.138.3.629
发表时间:
1997-08-11
期刊:
The Journal of cell biology
影响因子:
--
作者:
Carminati JL;Stearns T
通讯作者:
Stearns T
影响因子:
21.3
作者:
Gupta, Mohan L., Jr.;Carvalho, Pedro;Pellman, David
通讯作者:
Pellman, David
DOI:
10.1073/pnas.91.24.11358
发表时间:
1994-11-22
影响因子:
11.1
作者:
PANDA, D;MILLER, HP;WILSON, L
通讯作者:
WILSON, L