Molecular basis of dendritic atrophy and activity in stress susceptibility.

Molecular basis of dendritic atrophy and activity in stress susceptibility.
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DOI:
10.1038/mp.2017.178
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发表时间:
2017-11
影响因子:
11
通讯作者:
Lobo MK
Lobo MK
中科院分区:
医学1区
文献类型:
--
作者:
Francis TC;Chandra R;Gaynor A;Konkalmatt P;Metzbower SR;Evans B;Engeln M;Blanpied TA;Lobo MK

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Molecular and cellular adaptations in nucleus accumbens (NAc) medium spiny neurons (MSNs) underlie stress-induced depression-like behavior, but the molecular substrates mediating cellular plasticity and activity in MSN subtypes in stress susceptibility are poorly understood. We find the transcription factor early growth response 3 (EGR3) is increased in D1 receptor containing MSNs of mice susceptible to social defeat stress. Genetic reduction of Egr3 levels in D1-MSNs prevented depression-like outcomes in stress susceptible mice by preventing D1-MSN dendritic atrophy, reduced frequency of excitatory input and altered in vivo activity. Overall, we identify NAc neuronal-subtype molecular control of dendritic morphology and related functional adaptations, which underlie susceptibility to stress.
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