Female-specific synaptic dysfunction and cognitive impairment in a mouse model of PCDH19 disorder.
Female-specific synaptic dysfunction and cognitive impairment in a mouse model of PCDH19 disorder.
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PCDH19疾病的小鼠模型中,女性特异性突触功能障碍和认知障碍。
DOI:
10.1126/science.aaz3893
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发表时间:
2021-04-16
期刊:
影响因子:
56.9
通讯作者:
Umemori, Hisashi
中科院分区:
文献类型:
--
作者:
Hoshina, Naosuke;Johnson-Venkatesh, Erin M.;Hoshina, Miyuki;Umemori, Hisashi
Protocadherin-19 (PCDH19) mutations cause early-onset seizures and cognitive impairment. The PCDH19 gene is on the X-chromosome. Unlike most X-linked disorders, PCDH19 mutations affect heterozygous females (PCDH19HET♀), but not hemizygous males (PCDH19HEMI♂); however, why remains to be elucidated. We demonstrate PCDH19, a cell-adhesion molecule, is enriched at hippocampal mossy-fiber synapses. Pcdh19HET♀, but not Pcdh19HEMI♂, mice show impaired mossy-fiber synaptic structure and physiology. Consistently, Pcdh19HET♀, but not Pcdh19HEMI♂, mice exhibit reduced pattern completion and separation abilities, which require mossy-fiber synaptic function. Furthermore, PCDH19 appears to interact with N-cadherin at mossy-fiber synapses. In Pcdh19HET♀ conditions, mismatch between PCDH19 and N-cadherin diminishes N-cadherin-dependent signaling and impairs mossy-fiber synapse development. Indeed, N-cadherin overexpression rescues Pcdh19HET♀ phenotypes. These results reveal novel molecular and cellular mechanisms underlying the female-specific PCDH19 disorder phenotype. In PCDH19 disorder, PCDH19–N-cadherin mismatch causes female-specific synaptic dysfunction and cognitive impairment.
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影响因子:
7.8
作者:
Hazan, R B;Phillips, G R;Qiao, R F;Norton, L;Aaronson, S A
通讯作者:
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DOI:
10.1083/jcb.201507108
发表时间:
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期刊:
The Journal of cell biology
影响因子:
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