Stanford University - Department of Biology; Stanford University - Department of Bioengineering; Stanford University - Department of Applied Physics; Stanford University - Chan Zuckerberg Biohub
The regulatory mechanisms by which neurons coordinate their physiology and connectivity are not well understood. The Drosophila olfactory receptor neurons (ORNs) provide an excellent system to investigate this question. Each ORN type expresses a unique olfactory receptor or a combination thereof, and sends their axons to a stereotyped glomerulus. Using single-cell RNA-sequencing, we identified 33 transcriptomic clusters for ORNs and mapped 20 to their glomerular types, demonstrating that transcriptomic clusters correspond well with anatomically and physiologically defined ORN types. Each ORN type expresses hundreds of transcription factors. Transcriptome-instructed genetic analyses revealed that 1) one broadly expressed transcription factor (Acj6) only regulates olfactory receptor expression in one ORN type and only wiring specificity in another type; 2) one type-restricted transcription factor (Forkhead) only regulates receptor expression; and 3) another type-restricted transcription factor (Unplugged) regulates both events. Thus, ORNs utilize diverse strategies and complex regulatory networks to coordinate their physiology and connectivity.
Li, Hongjie and Li, Tongchao and Horns, Felix and Li, Jiefu and Xie, Qijing and Xu, Chuanyun and Wu, Bing and Kebschull, Justus and Mclaughlin, Colleen and Kolluru, Sai Saroja and Jones, Robert C. and Vacek, David and Xie, Anthony and Luginbuhl, David and Quake, Stephen and Luo, Liqun, Single-Cell Transcriptomes Reveal Diverse Regulatory Strategies for Olfactory Receptor Expression and Axon Targeting (November 11, 2019). Available at SSRN: https://ssrn.com/abstract=3489289 or http://dx.doi.org/10.2139/ssrn.3489289
This version of the paper has not been formally peer reviewed.
Subscribe to this free journal for more curated articles on this topic
FOLLOWERS
20
PAPERS
9,210
Feedback
Feedback to SSRN
If you need immediate assistance, call 877-SSRNHelp (877 777 6435) in the United States, or +1 212 448 2500 outside of the United States, 8:30AM to 6:00PM U.S. Eastern, Monday - Friday.