Zebrafish whole brain single cell RNA-seq of nr1d1:VNP fish

we report a transgenic zebrafish line using destabilized fluorescent protein, Venus-NLS-PEST (VNP), driven by the promoter of a key circadian clock gene, nr1d1. This system allows us to monitor the development of single-cell circadian rhythm in live zebrafish larva in a cell-type specific manner. To identify the cell types expressing nr1d1:VNP in the whole brain, we conducted single cell RNA-seq (scRNA-seq) of ~15,000 cells dissociated from the brain of Tg(nr1d1:VNP) larval fish at 6.5dpf. Among them, 6514 cells were identified with number of genes > 500 and used for the following analysis. 26 cells clusters were classified from scRNAseq, and manually annotated by comparing the marker genes with the adult zebrfiash whole brain single cell RNA-seq data. The mRNA of nr1d1:VNP was enriched in photoreceptors in pineal gland, granule cells and purkinje cells in cerebellum, habenula cells as well as non-neuron cell. To identify the cell types expressing nr1d1:VNP in the whole brain, we conducted single cell RNA-seq (scRNA-seq) of ~15,000 cells dissociated from the brain of Tg(nr1d1:VNP) larval fish at 6.5dpf using 10X genomics.