A neurogenetic mechanism of experience-dependent suppression of aggression.

A neurogenetic mechanism of experience-dependent suppression of aggression.
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DOI:
10.1126/sciadv.abg3203
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发表时间:
2022-09-09
期刊:
影响因子:
13.6
通讯作者:
--
中科院分区:
综合性期刊1区
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--
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攻击性是一种重要的社会行为,但过度的攻击性可能对健康有害。同种个体之间的社交经验可以减少许多物种的攻击性,但其机制在很大程度上尚不清楚。我们发现,神经(NVY),果蝇同源的脊椎动物髓系易位基因(MTGs)的功能丧失突变,增加侵略性,只有在社会经验丰富的苍蝇,这可以逆转人类MTGs的神经元表达。在男性和女性中,这种依赖于社会经验的攻击性抑制特别需要一个由nvy标记的章鱼胺能/酪胺能神经元亚群。对这些神经元的细胞类型特异性转录组学分析揭示了可能位于nvy下游的攻击控制基因。我们的研究结果说明了遗传和神经元机制,神经系统抑制侵略的社会经验依赖的方式,一个知之甚少的过程,被认为是重要的保持动物的健身。一个转录调节器连接着基因和神经元,介导由社会经验引起的攻击性降低。
Aggression is an ethologically important social behavior, but excessive aggression can be detrimental to fitness. Social experiences among conspecific individuals reduce aggression in many species, the mechanism of which is largely unknown. We found that loss-of-function mutation of nervy (nvy), a Drosophila homolog of vertebrate myeloid translocation genes (MTGs), increased aggressiveness only in socially experienced flies and that this could be reversed by neuronal expression of human MTGs. A subpopulation of octopaminergic/tyraminergic neurons labeled by nvy was specifically required for such social experience–dependent suppression of aggression, in both males and females. Cell type–specific transcriptomic analysis of these neurons revealed aggression-controlling genes that are likely downstream of nvy. Our results illustrate both genetic and neuronal mechanisms by which the nervous system suppresses aggression in a social experience–dependent manner, a poorly understood process that is considered important for maintaining the fitness of animals. A transcriptional regulator links the genes and neurons that mediate reduced aggression caused by social experience.
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