Abstract
The cognitive abilities of humans are distinctive among primates, but their molecular and cellular substrates are poorly understood. We used comparative single-nucleus transcriptomics to analyze samples of the middle temporal gyrus (MTG) from adult humans, chimpanzees, gorillas, rhesus macaques, and common marmosets to understand human-specific features of the neocortex. Human, chimpanzee, and gorilla MTG showed highly similar cell-type composition and laminar organization as well as a large shift in proportions of deep-layer intratelencephalic-projecting neurons compared with macaque and marmoset MTG. Microglia, astrocytes, and oligodendrocytes had more-divergent expression across species compared with neurons or oligodendrocyte precursor cells, and neuronal expression diverged more rapidly on the human lineage. Only a few hundred genes showed human-specific patterning, suggesting that relatively few cellular and molecular changes distinctively define adult human cortical structure.
| Original language | English |
|---|---|
| Article number | eade9516 |
| Journal | Science (New York, N.Y.) |
| Volume | 382 |
| Issue number | 6667 |
| DOIs | |
| Publication status | Published - 13 Oct 2023 |
| Externally published | Yes |
Keywords
- Animals
- Cognition
- Gene Expression Profiling
- Gorilla gorilla/genetics
- Hominidae/genetics
- Humans
- Macaca mulatta/genetics
- Neocortex/physiology
- Pan troglodytes/genetics
- Phylogeny
- Species Specificity
- Temporal Lobe/physiology
- Transcriptome
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