Sneezing reflex is mediated by a peptidergic pathway from nose to brainstem.

Sneezing reflex is mediated by a peptidergic pathway from nose to brainstem.
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DOI:
10.1016/j.cell.2021.05.017
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发表时间:
2021-07-08
期刊:
影响因子:
64.5
通讯作者:
Liu Q
Liu Q
中科院分区:
生物学1区
文献类型:
--
作者:
Li F;Jiang H;Shen X;Yang W;Guo C;Wang Z;Xiao M;Cui L;Luo W;Kim BS;Chen Z;Huang AJW;Liu Q

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Sneezing is a vital respiratory reflex frequently associated with allergic rhinitis and viral respiratory infections. However, its neural circuit remains largely unknown. A sneeze-evoking region was discovered in both cat and human brainstems, corresponding anatomically to the central recipient zone of nasal sensory neurons. Therefore, we hypothesized that a neuronal population postsynaptic to nasal sensory neurons mediates sneezing in this region. By screening major presynaptic neurotransmitters/neuropeptides released by nasal sensory neurons, we found that Neuromedin B (NMB) peptide is essential for signaling sneezing. Ablation of NMB-sensitive postsynaptic neurons in the sneeze-evoking region or deficiency in NMB receptor abolished the sneezing reflex. Remarkably, NMB-sensitive neurons further project to the caudal ventral respiratory group (cVRG). Chemical activation of NMB-sensitive neurons elicits action potentials in cVRG neurons and leads to sneezing behavior. Our study delineates a peptidergic pathway mediating sneezing, providing molecular insights into the sneezing reflex arc. By using a newly developed mouse model, Li et al. were able to elucidate the peptidermic pathway that mediates the sneezing reflex, offering insight into how sneezing occurs
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