Modeling spinal muscular atrophy in Drosophila links Smn to FGF signaling.
Modeling spinal muscular atrophy in Drosophila links Smn to FGF signaling.
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DOI:
10.1083/jcb.201004016
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发表时间:
2011-02-07
期刊:
影响因子:
--
通讯作者:
Artavanis-Tsakonas S
中科院分区:
文献类型:
--
作者:
Sen A;Yokokura T;Kankel MW;Dimlich DN;Manent J;Sanyal S;Artavanis-Tsakonas S
FGF signaling in neurons is regulated by Survival Motor Neuron, a component of a complex that regulates snRNP biogenesis and FGF receptor expression. Spinal muscular atrophy (SMA), a devastating neurodegenerative disorder characterized by motor neuron loss and muscle atrophy, has been linked to mutations in the Survival Motor Neuron (SMN) gene. Based on an SMA model we developed in Drosophila, which displays features that are analogous to the human pathology and vertebrate SMA models, we functionally linked the fibroblast growth factor (FGF) signaling pathway to the Drosophila homologue of SMN, Smn. Here, we characterize this relationship and demonstrate that Smn activity regulates the expression of FGF signaling components and thus FGF signaling. Furthermore, we show that alterations in FGF signaling activity are able to modify the neuromuscular junction defects caused by loss of Smn function and that muscle-specific activation of FGF is sufficient to rescue Smn-associated abnormalities.
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DOI:
10.1073/pnas.0900122106
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影响因子:
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