Non-cell autonomous influence of MeCP2-deficient glia on neuronal dendritic morphology.
Non-cell autonomous influence of MeCP2-deficient glia on neuronal dendritic morphology.
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DOI:
10.1038/nn.2275
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发表时间:
2009-03
影响因子:
25
通讯作者:
Mandel, Gail
中科院分区:
文献类型:
--
作者:
Ballas, Nurit;Lioy, Daniel T.;Grunseich, Christopher;Mandel, Gail
The neurodevelopmental disorder Rett Syndrome (RTT) is caused by sporadic mutations in the transcriptional factor methyl-CpG binding protein 2 (MeCP2). Although it is thought that the primary cause of RTT is cell autonomous due to lack of functional MeCP2 in neurons, whether non-cell autonomous factors contribute to the disease, is unknown. Here, we show that loss of MeCP2 occurs not only in neurons but also in glial cells of RTT brain. Using an in vitro co-culture system, we find that mutant astrocytes from a RTT mouse model, and their conditioned medium, fail to support normal dendritic morphology of either wild-type or mutant hippocampal neurons. Our studies suggest that in RTT brain, astrocytes carrying MeCP2 mutations have a non-cell autonomous effect on neuronal properties, likely due to aberrant secretion of soluble factor(s).
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