LMO4 controls the balance between excitatory and inhibitory spinal V2 interneurons.
LMO4 controls the balance between excitatory and inhibitory spinal V2 interneurons.
复制标题
DOI:
10.1016/j.neuron.2009.02.011
复制
发表时间:
2009-03-26
期刊:
影响因子:
16.2
通讯作者:
Lee, Soo-Kyung
中科院分区:
文献类型:
--
作者:
Joshi, Kaumudi;Lee, Seunghee;Lee, Bora;Lee, Jae W.;Lee, Soo-Kyung
Multiple excitatory and inhibitory interneurons form the motor circuit with motor neurons in the ventral spinal cord. Notch signaling initiates the diversification of immature V2-interneurons into excitatory V2a-interneurons and inhibitory V2b-interneurons. Here we provide a transcriptional regulatory mechanism underlying their balanced production. LIM-only protein LMO4 controls this binary cell fate choice by regulating the activity of V2a- and V2b-specific LIM-complexes inversely. In the spinal cord, LMO4 induces GABAergic V2b-interneurons in collaboration with SCL and inhibits Lhx3 from generating glutamatergic V2a-interneuons. In LMO4;SCL compound mutant embryos, V2a-interneurons increase markedly at the expense of V2b-interneurons. We further demonstrate that LMO4 nucleates the assembly of a novel LIM-complex containing SCL, Gata2 and NLI. This complex activates specific enhancers in V2b-genes consisting of binding sites for SCL and Gata2, thereby promoting V2b-interneuron fate. Thus, LOM4 plays essential roles in directing a balanced generation of inhibitory and excitatory neurons in the ventral spinal cord.
登录
查看更多内容
影响因子:
4.6
作者:
Kimura, Yukiko;Satou, Chie;Higashijima, Shin-ichi
通讯作者:
Higashijima, Shin-ichi
DOI:
10.1073/pnas.212532399
发表时间:
2002-10-29
影响因子:
11.1
作者:
Chen, L;Segal, D;Westphal, H
通讯作者:
Westphal, H
影响因子:
3.4
作者:
Lundfald, Line;Restrepo, C. Ernesto;Kiehn, Ole
通讯作者:
Kiehn, Ole
影响因子:
4.6
作者:
Glasgow, SM;Henkel, RM;Johnson, JE
通讯作者:
Johnson, JE
影响因子:
10.5
作者:
Hori, Kei;Cholewa-Waclaw, Justyna;Johnson, Jane E.
通讯作者:
Johnson, Jane E.