2025-04-06 清華大学
Figure 1. Prefrontal cortical neuron primary cilia modulate animal stress
<関連情報>
- https://www.tsinghua.edu.cn/en/info/1245/14176.htm
- https://www.cell.com/neuron/abstract/S0896-6273(25)00115-1
前頭前野における一次繊毛プロテインキナーゼA活性がマウスのストレスを調節する Primary ciliary protein kinase A activity in the prefrontal cortex modulates stress in mice
Jiajun Yang ∙ Yingjie Dong ∙ Jie Liu,∙ … ∙ Jian Ma ∙ Hang Shi, ∙ Song-Hai Shi
Neuron Published:March 7, 2025
DOI:https://doi.org/10.1016/j.neuron.2025.02.002
Highlights
- Various animal stressors prolong neuronal primary cilia in the PFC
- Removal of PFC excitatory neuron primary cilia suppresses animal stress
- Corticosterone treatment triggers primary ciliary cAMP elevation in PFC neurons
- Primary ciliary PKA activity suppression in PFC neurons reduces animal stress
Summary
Primary cilia are cellular antennae emanating from vertebrate cell surfaces to sense and transduce extracellular signals intracellularly to regulate cell behavior and function. However, their signal sensing and physiological functions in neocortical neurons remain largely unclear. Here, we show that, in response to various animal stressors, primary cilia in the mouse prefrontal cortex (PFC) exhibit consistent axonemal elongation. Selective removal of excitatory neuron primary cilia in the prefrontal but not sensory cortex leads to a reduction in animal stress sensing and response. Treatment with corticosterone, the major stress hormone, elicits an increase in primary ciliary cyclic adenosine 3′,5′-monphosphate (cAMP) level in PFC excitatory neurons and a decrease in neuronal excitability dependent on primary cilia. Suppression of primary ciliary protein kinase A (PKA) activity in PFC excitatory neurons reduces animal stress. These results suggest that excitatory neurons in the PFC are involved in sensing and regulating animal stress via primary ciliary cAMP/PKA signaling.
