犁鼻器
生物
细胞命运测定
感觉系统
细胞生物学
Notch信号通路
受体
祖细胞
神经科学
祖细胞
信号转导
基因
遗传学
干细胞
转录因子
作者
Raghu Ram Katreddi,Ed Zandro M. Taroc,Sawyer M Hicks,Jennifer M. Lin,Shuting Liu,Mengqing Xiang,Paolo E. Forni
出处
期刊:Development
[The Company of Biologists]
日期:2022-07-01
卷期号:149 (13)
被引量:7
摘要
ABSTRACT The ability of terrestrial vertebrates to find food and mating partners, and to avoid predators, relies on the detection of chemosensory information. Semiochemicals responsible for social and sexual behaviors are detected by chemosensory neurons of the vomeronasal organ (VNO), which transmits information to the accessory olfactory bulb. The vomeronasal sensory epithelium of most mammalian species contains a uniform vomeronasal system; however, rodents and marsupials have developed a more complex binary vomeronasal system, containing vomeronasal sensory neurons (VSNs) expressing receptors of either the V1R or V2R family. In rodents, V1R/apical and V2R/basal VSNs originate from a common pool of progenitors. Using single cell RNA-sequencing, we identified differential expression of Notch1 receptor and Dll4 ligand between the neuronal precursors at the VSN differentiation dichotomy. Our experiments show that Notch signaling is required for effective differentiation of V2R/basal VSNs. In fact, Notch1 loss of function in neuronal progenitors diverts them to the V1R/apical fate, whereas Notch1 gain of function redirects precursors to V2R/basal. Our results indicate that Notch signaling plays a pivotal role in triggering the binary differentiation dichotomy in the VNO of rodents.
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