Modulating Neuronal Competition Dynamics in the Dentate Gyrus to Rejuvenate Aging Memory Circuits.
Modulating Neuronal Competition Dynamics in the Dentate Gyrus to Rejuvenate Aging Memory Circuits.
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DOI:
10.1016/j.neuron.2016.08.009
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发表时间:
2016-09-21
期刊:
影响因子:
16.2
通讯作者:
Sahay A
中科院分区:
文献类型:
--
作者:
McAvoy KM;Scobie KN;Berger S;Russo C;Guo N;Decharatanachart P;Vega-Ramirez H;Miake-Lye S;Whalen M;Nelson M;Bergami M;Bartsch D;Hen R;Berninger B;Sahay A
The neural circuit mechanisms underlying the integration and functions of adult-born dentate granule cell (DGCs) are poorly understood. Adult-born DGCs are thought to compete with mature DGCs for inputs to integrate. Transient genetic overexpression of a negative regulator of dendritic spines, Kruppel-like factor 9 (Klf9), in mature DGCs enhanced integration of adult-born DGCs and increased NSC activation. Reversal of Klf9 overexpression in mature DGCs restored spines, activity, and reset neuronal competition dynamics and NSC activation, leaving the DG modified by a functionally integrated, expanded cohort of age-matched adult-born DGCs. Spine elimination by inducible deletion of Rac1 in mature DGCs increased survival of adult-born DGCs without affecting proliferation or DGC activity. Enhanced integration of adult-born DGCs transiently reorganized adult-born DGC local afferent connectivity and promoted global remapping in the DG. Rejuvenation of the DG by enhancing integration of adult-born DGCs in adulthood, middle age and aging enhanced memory precision.
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影响因子:
82.9
作者:
Eriksson, PS;Perfilieva, E;Gage, FH
通讯作者:
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DOI:
10.1073/pnas.1218991110
发表时间:
2013-03-19
影响因子:
11.1
作者:
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作者:
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通讯作者:
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影响因子:
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作者:
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通讯作者:
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