Journal
CELL
Volume 174, Issue 3, Pages 622-+Publisher
CELL PRESS
DOI: 10.1016/j.cell.2018.05.021
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Funding
- NIH [R01 EY017916]
- NYUAD Institute [G-1205C]
- New Innovator Award from the NIH [DP2-HG-009623]
- EMBO [365-2014]
- HFSP fellowship [LT000122/2015-L]
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Transcription factors regulate themolecular, morphological, and physiological characteristics of neurons and generate their impressive cell-type diversity. To gain insight into the general principles that govern how transcription factors regulate cell-type diversity, we used large-scale single-cell RNA sequencing to characterize the extensive cellular diversity in the Drosophila optic lobes. We sequenced 55,000 single cells and assigned them to 52 clusters. We validated and annotated many clusters using RNA sequencing of FACS-sorted single-cell types and cluster-specific genes. To identify transcription factors responsible for inducing specific terminal differentiation features, we generated a random forest'' model, and we showed that the transcription factors Apterous and Traffic-jam are required in many but not all cholinergic and glutamatergic neurons, respectively. In fact, the same terminal characters often can be regulated by different transcription factors in different cell types, arguing for extensive phenotypic convergence. Our data provide a deep understanding of the developmental and functional specification of acomplex brain structure.
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