Author:
Zhou Qi-Jun,Liu Xingyan,Zhang Longlong,Wang Rong,Yin Tingting,Li Xiaolu,Li Guimei,He Yuqi,Ding Zhaoli,Ma Pengcheng,Wang Shi-Zhi,Mao Bingyu,Zhang Shihua,Wang Guo-Dong
Abstract
AbstractThe process of dog domestication leads to dramatic differences in behavioral traits compared to grey wolves. A class of putative positively selected genes is related to learning and memory, for instance, long-term potentiation and long-term depression. In this study, we constructed a single-nuclei transcriptomic atlas of the dog hippocampus to illustrate its cell types, cell lineage, and molecular features. Using the transcriptomes of 105,057 single-nuclei from the hippocampus of a Beagle dog, we identified 26 cell clusters and a putative trajectory of oligodendrocyte development. Comparative analysis revealed a significant convergence between dog differentially expressed genes (DEGs) and putative positively selected genes (PSGs). 40 putative PSGs were DEGs in the glutamatergic neurons, especially in the cluster 14, which is related to the regulation of nervous system development. In summary, this study provided a blueprint to understand the cellular mechanism of dog domestication.
Publisher
Cold Spring Harbor Laboratory
Reference84 articles.
1. © 2015 Allen Institute for Brain Science. Allen Cell Types Database. Available from: https://celltypes.brain-map.org/rnaseq/human_m1_10x. [Internet].
2. © 2015 Allen Institute for Brain Science. Allen Cell Types Database. Available from: https://celltypes.brain-map.org/rnaseq/mouse_ctx-hip_10x. [Internet].
3. © 2020 Allen Institute for Brain Science. Allen Brain map. Available from: http://mouse.brain-map.org/experiment/show/74513995.
4. A Single-Cell RNA Sequencing Study Reveals Cellular and Molecular Dynamics of the Hippocampal Neurogenic Niche;Cell Reports,2017
5. The genomic signature of dog domestication reveals adaptation to a starch-rich diet