Octopus maya
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA544090 | ENA |
REPOSITORIES: ENA
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Project description:Transcriptome analysis of the central nervous system of males Octopus maya under chronic thermal stress
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Project description:This study was carried out to investigate the gene expression profile from arm and hatchlings transcriptome across multiple individual Octopus bimaculoides .
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Project description:Octopuses are mollusks that evolved intricate neural systems which are comparable with vertebrates in terms of cell number, complexity and size. Exactly how an octopus increases its neural cell number so dramatically and whether an increase in cell type diversity enables higher cognitive function and complex behavior is still unknown. To profile the cell diversity of the developing octopus brain we applied 10x Genomics’ single-cell/nuclei RNA sequencing technology. At hatching, the Octopus vulgaris brain possesses the main lobes and connections of an adult brain, but which cell types are present remains elusive. We were able to identify 42 robust cell types comprising mostly neural cells, as well as multiple glial subtypes and other non-neuronal populations such as endothelial cells and fibroblasts. In situ expression analysis of marker genes allowed spatial mapping of clusters, including vertical lobe cells and several optic lobe cell types. Investigation of cell type conservation indicated similar gene expression signatures between glial cells of mice, fly and octopus. Genes related to memory and learning were found enriched in vertical lobe cells, that showed molecular similarities with Kenyon cells in Drosophila but not to any mouse cell type. Lastly, we also analyzed the expression of newly expanded gene families (protocadherins, C2H2 zinc-finger transcription factors and G-protein coupled receptors) and found that these are enriched in specific cell types. Taken together, our data gives insight into cell type evolution and the composition of the complex octopus brain.
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Project description:Octopus vulgaris Transcriptome or Gene expression
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Project description:Octopus cyanea Transcriptome or Gene expression
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