A Subpopulation of Prefrontal Cortical Neurons Is Required for Social Memory.
A Subpopulation of Prefrontal Cortical Neurons Is Required for Social Memory.
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前额叶皮质神经元的亚群是社会记忆所必需的。
DOI:
10.1016/j.biopsych.2020.08.023
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发表时间:
2021-03-01
影响因子:
10.6
通讯作者:
Gao WJ
中科院分区:
文献类型:
--
作者:
Xing B;Mack NR;Guo KM;Zhang YX;Ramirez B;Yang SS;Lin L;Wang DV;Li YC;Gao WJ
The medial prefrontal cortex (mPFC) is essential for social behaviors, yet whether and how it encodes social memory remains unclear. We combined whole-cell patch recording, morphological analysis, optogenetic/chemogenetic manipulation, and “targeted recombination in active populations (TRAP)” transgenic mouse tool, to study the social-associated neural populations in the mPFC. Fos-TRAPed prefrontal social-associated neurons are excitatory pyramidal neurons with relatively small soma sizes and thin-tufted apical dendrite. These cells exhibit intrinsic firing features of dopamine (DA) D1-receptors (D1Rs)-like neurons, show persisting firing pattern after social investigation, and project dense axons to nucleus accumbens (NAc). In behaving TRAP mice, selective inhibition of prefrontal social-associated neurons does not affect social investigation but impairs subsequent social recognition, whereas optogenetic re-activation of their projections to the NAc enables recall of a previously encountered but “forgotten” mouse. Moreover, chemogenetic activation of mPFC-to-NAc projections ameliorates MK-801 induced social memory impairments. Our results characterize the electrophysiological and morphological features of social-associated neurons in the mPFC and indicate these Fos-labeled, social-activated prefrontal neurons are necessary and sufficient for social memory.
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