A Role for Dystonia-Associated Genes in Spinal GABAergic Interneuron Circuitry.
A Role for Dystonia-Associated Genes in Spinal GABAergic Interneuron Circuitry.
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DOI:
10.1016/j.celrep.2017.09.079
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发表时间:
2017-10-17
期刊:
影响因子:
8.8
通讯作者:
Kaltschmidt JA
中科院分区:
文献类型:
--
作者:
Zhang J;Weinrich JAP;Russ JB;Comer JD;Bommareddy PK;DiCasoli RJ;Wright CVE;Li Y;van Roessel PJ;Kaltschmidt JA
Spinal interneurons are critical modulators of motor circuit function. In the dorsal spinal cord, a set of interneurons called GABApre presynaptically inhibits proprioceptive sensory afferent terminals, thus negatively regulating sensory-motor signaling. Although deficits in presynaptic inhibition have been inferred in human motor diseases, including dystonia, it remains unclear whether GABApre circuit components are altered in these conditions. Here, we use developmental timing to show that GABApre neurons are a late Ptf1a-expressing subclass and localize to the intermediate spinal cord. Using a microarray screen to identify genes expressed in this intermediate population, we find the kelch-like family member Klhl14, implicated in dystonia through its direct binding with torsion-dystonia-related protein Tor1a. Furthermore, in Tor1a mutant mice in which Klhl14 and Tor1a binding is disrupted, formation of GABApre sensory afferent synapses is impaired. Our findings suggest a potential contribution of GABApre neurons to the deficits in presynaptic inhibition observed in dystonia. GABApre spinal interneurons gate sensory inputs onto motor neurons. Zhang et al. localize GABApre neurons to the intermediate spinal cord and show that these interneurons express hereditary dystonia-related genes Klhl14 and Tor1a. In Tor1a mutant mice, GABApre synapse formation is disrupted, suggesting that spinal circuits may be affected in dystonia.
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影响因子:
16.2
作者:
Ashrafi S;Betley JN;Comer JD;Brenner-Morton S;Bar V;Shimoda Y;Watanabe K;Peles E;Jessell TM;Kaltschmidt JA
通讯作者:
Kaltschmidt JA
DOI:
10.1101/sqb.2014.79.024786
发表时间:
2014
期刊:
Cold Spring Harbor symposia on quantitative biology
影响因子:
--
作者:
Azim E;Fink AJ;Jessell TM
通讯作者:
Jessell TM
影响因子:
4.8
作者:
Giles, Lisa M.;Li, Lian;Chin, Lih-Shen
通讯作者:
Chin, Lih-Shen
影响因子:
11.4
作者:
Granata, Alessandra;Koo, Seong Joo;Warner, Thomas T.
通讯作者:
Warner, Thomas T.
影响因子:
4.6
作者:
Glasgow, SM;Henkel, RM;Johnson, JE
通讯作者:
Johnson, JE