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| Autori principali: | , , , , , , , , , , , , , , |
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| Natura: | Artículo científico |
| Lingua: | en |
| Pubblicazione: |
Nature
2026
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| Accesso online: | https://pubmed.ncbi.nlm.nih.gov/42271056/ |
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| _version_ | 1868266039377133569 |
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| author | Zhu, Yuanzhen Zhang, Shuai Wei, Jiankai Dolgetta-Garcia, Diego Jindrich, Katia Liu, Huimin Shi, Chenggang Pan, Rongrong Chen, Yuwei Xu, Yan Li, Qiye Wagner, Günter P Holland, Peter W H Li, Guang Shimeld, Sebastian M |
| author_facet | Zhu, Yuanzhen Zhang, Shuai Wei, Jiankai Dolgetta-Garcia, Diego Jindrich, Katia Liu, Huimin Shi, Chenggang Pan, Rongrong Chen, Yuwei Xu, Yan Li, Qiye Wagner, Günter P Holland, Peter W H Li, Guang Shimeld, Sebastian M Zhu, Yuanzhen Zhang, Shuai Wei, Jiankai Dolgetta-Garcia, Diego Jindrich, Katia Liu, Huimin Shi, Chenggang Pan, Rongrong Chen, Yuwei Xu, Yan Li, Qiye Wagner, Günter P Holland, Peter W H Li, Guang Shimeld, Sebastian M |
| collection | PubMed - marine biology |
| contents | Whole-genome duplication shaped cell-type evolution in the vertebrate brain. Zhu, Yuanzhen Zhang, Shuai Wei, Jiankai Dolgetta-Garcia, Diego Jindrich, Katia Liu, Huimin Shi, Chenggang Pan, Rongrong Chen, Yuwei Xu, Yan Li, Qiye Wagner, Günter P Holland, Peter W H Li, Guang Shimeld, Sebastian M The complex brains of vertebrates have more cell types than those of their closest relatives. Whole-genome duplications (WGDs) occurred during early vertebrate evolution, but it is unclear whether the duplicated genes (ohnologues) facilitated cell-type evolution. Here using brain single-cell transcriptomes from five chordates-human, mouse, lizard, lamprey and amphioxus-we report that many cell-type families with conserved core transcription factors in vertebrates do not show one-to-one homology with amphioxus. Moreover, ohnologues, particularly those from the first WGD, were more important than small-scale duplication paralogues for vertebrate cell-type evolution. To explore whether ohnologues are mechanistically important for this process, we predicted ancestral cell-type states and compared them to amphioxus and experimentally investigated macroglia. The findings indicate that ohnologues had a role in early vertebrate cell-type diversification. Moreover, by examining paralogue expression across cell types and species, we show that expression changes were mainly driven by dosage selection and subfunctionalization. We also link ohnologues to cellular diversity at different anatomical and cell-type scales. Our findings demonstrate the importance of WGDs for the evolution of early vertebrate brain complexity and highlight that the resultant ohnologues continued to capacitate cell-type evolution long after they were formed. |
| format | Artículo científico |
| id | pubmed_42271056 |
| institution | PubMed |
| language | en |
| publishDate | 2026 |
| publisher | Nature |
| record_format | pubmed |
| spellingShingle | Whole-genome duplication shaped cell-type evolution in the vertebrate brain. Zhu, Yuanzhen Zhang, Shuai Wei, Jiankai Dolgetta-Garcia, Diego Jindrich, Katia Liu, Huimin Shi, Chenggang Pan, Rongrong Chen, Yuwei Xu, Yan Li, Qiye Wagner, Günter P Holland, Peter W H Li, Guang Shimeld, Sebastian M Whole-genome duplication shaped cell-type evolution in the vertebrate brain. Zhu, Yuanzhen Zhang, Shuai Wei, Jiankai Dolgetta-Garcia, Diego Jindrich, Katia Liu, Huimin Shi, Chenggang Pan, Rongrong Chen, Yuwei Xu, Yan Li, Qiye Wagner, Günter P Holland, Peter W H Li, Guang Shimeld, Sebastian M The complex brains of vertebrates have more cell types than those of their closest relatives. Whole-genome duplications (WGDs) occurred during early vertebrate evolution, but it is unclear whether the duplicated genes (ohnologues) facilitated cell-type evolution. Here using brain single-cell transcriptomes from five chordates-human, mouse, lizard, lamprey and amphioxus-we report that many cell-type families with conserved core transcription factors in vertebrates do not show one-to-one homology with amphioxus. Moreover, ohnologues, particularly those from the first WGD, were more important than small-scale duplication paralogues for vertebrate cell-type evolution. To explore whether ohnologues are mechanistically important for this process, we predicted ancestral cell-type states and compared them to amphioxus and experimentally investigated macroglia. The findings indicate that ohnologues had a role in early vertebrate cell-type diversification. Moreover, by examining paralogue expression across cell types and species, we show that expression changes were mainly driven by dosage selection and subfunctionalization. We also link ohnologues to cellular diversity at different anatomical and cell-type scales. Our findings demonstrate the importance of WGDs for the evolution of early vertebrate brain complexity and highlight that the resultant ohnologues continued to capacitate cell-type evolution long after they were formed. |
| title | Whole-genome duplication shaped cell-type evolution in the vertebrate brain. |
| url | https://pubmed.ncbi.nlm.nih.gov/42271056/ |