Wnt signals organize synaptic prepattern and axon guidance through the zebrafish unplugged/MuSK receptor.
Wnt signals organize synaptic prepattern and axon guidance through the zebrafish unplugged/MuSK receptor.
复制标题
DOI:
10.1016/j.neuron.2008.12.025
复制
发表时间:
2009-03-12
期刊:
影响因子:
16.2
通讯作者:
Granato, Michael
中科院分区:
文献类型:
--
作者:
Jing, Lili;Lefebvre, Julie L.;Gordon, Laura R.;Granato, Michael
Early during neuromuscular development acetylcholine receptors (AChRs) accumulate at the center of muscle fibers, precisely where motor growth cones navigate and synapses eventually form. Here, we show that Wnt11r binds to the zebrafish unplugged/MuSK ectodomain to organize this central muscle zone. In the absence of such zone, prepatterned AChRs fail to aggregate and, as visualized by live cell imaging, growth cones stray from their central path. Using inducible unplugged/MuSK transgenes we show that organization of the central muscle zone is dispensable for the formation of neural synapses, but essential for AChR prepattern and motor growth cone guidance. Finally, we show that blocking non-canonical dishevelled signaling in muscle fibers disrupts AChR prepatterning and growth cone guidance. We propose that Wnt ligands activate unplugged/MuSK signaling in muscle fibers to restrict growth cone guidance and AChR prepatterns to the muscle center through a mechanism reminiscent of the planar cell polarity pathway.
登录
查看更多内容
影响因子:
1.5
作者:
Downes, GB;Waterbury, JA;Granato, M
通讯作者:
Granato, M
影响因子:
5.5
作者:
ANDERSON, MJ;COHEN, MW
通讯作者:
COHEN, MW
影响因子:
64.5
作者:
DeChiara, TM;Bowen, DC;Yancopoulos, GD
通讯作者:
Yancopoulos, GD
影响因子:
64.5
作者:
Glass, DJ;Bowen, DC;Yancopoulos, GD
通讯作者:
Yancopoulos, GD
DOI:
10.1002/neu.10137
发表时间:
2002-12-01
期刊:
JOURNAL OF NEUROBIOLOGY
影响因子:
--
作者:
Burden, SJ
通讯作者:
Burden, SJ