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Cell-type profiling in salamanders identifies innovations in vertebrate forebrain evolution

Woych, Jamie ; Ortega Gurrola, Alonso ; Deryckere, Astrid ; Jaeger, Eliza C B ; Gumnit, Elias ; Merello, Gianluca ; Gu, Jiacheng ; Joven Araus, Alberto ; Leigh, Nicholas D LU orcid and Yun, Maximina , et al. (2022) In Science (New York, N.Y.) 377(6610). p.1-11
Abstract

The evolution of advanced cognition in vertebrates is associated with two independent innovations in the forebrain: the six-layered neocortex in mammals and the dorsal ventricular ridge (DVR) in sauropsids (reptiles and birds). How these innovations arose in vertebrate ancestors remains unclear. To reconstruct forebrain evolution in tetrapods, we built a cell-type atlas of the telencephalon of the salamander
Pleurodeles waltl. Our molecular, developmental, and connectivity data indicate that parts of the sauropsid DVR trace back to tetrapod ancestors. By contrast, the salamander dorsal pallium is devoid of cellular and molecular characteristics of the mammalian neocortex yet shares similarities with the entorhinal cortex and... (More)

The evolution of advanced cognition in vertebrates is associated with two independent innovations in the forebrain: the six-layered neocortex in mammals and the dorsal ventricular ridge (DVR) in sauropsids (reptiles and birds). How these innovations arose in vertebrate ancestors remains unclear. To reconstruct forebrain evolution in tetrapods, we built a cell-type atlas of the telencephalon of the salamander
Pleurodeles waltl. Our molecular, developmental, and connectivity data indicate that parts of the sauropsid DVR trace back to tetrapod ancestors. By contrast, the salamander dorsal pallium is devoid of cellular and molecular characteristics of the mammalian neocortex yet shares similarities with the entorhinal cortex and subiculum. Our findings chart the series of innovations that resulted in the emergence of the mammalian six-layered neocortex and the sauropsid DVR.

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organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Animals, Atlases as Topic, Biological Evolution, Neocortex/cytology, Neurons/metabolism, Pleurodeles/physiology, Telencephalon/cytology, Transcriptome
in
Science (New York, N.Y.)
volume
377
issue
6610
article number
eabp9186
pages
1 - 11
publisher
American Association for the Advancement of Science (AAAS)
external identifiers
  • pmid:36048957
  • scopus:85137115575
ISSN
1095-9203
DOI
10.1126/science.abp9186
language
English
LU publication?
yes
id
9fdd9415-5467-40bd-bc30-3aed6a2452a7
date added to LUP
2022-09-27 13:27:56
date last changed
2024-06-14 22:23:47
@article{9fdd9415-5467-40bd-bc30-3aed6a2452a7,
  abstract     = {{<p>The evolution of advanced cognition in vertebrates is associated with two independent innovations in the forebrain: the six-layered neocortex in mammals and the dorsal ventricular ridge (DVR) in sauropsids (reptiles and birds). How these innovations arose in vertebrate ancestors remains unclear. To reconstruct forebrain evolution in tetrapods, we built a cell-type atlas of the telencephalon of the salamander <br>
 Pleurodeles waltl. Our molecular, developmental, and connectivity data indicate that parts of the sauropsid DVR trace back to tetrapod ancestors. By contrast, the salamander dorsal pallium is devoid of cellular and molecular characteristics of the mammalian neocortex yet shares similarities with the entorhinal cortex and subiculum. Our findings chart the series of innovations that resulted in the emergence of the mammalian six-layered neocortex and the sauropsid DVR.<br>
 </p>}},
  author       = {{Woych, Jamie and Ortega Gurrola, Alonso and Deryckere, Astrid and Jaeger, Eliza C B and Gumnit, Elias and Merello, Gianluca and Gu, Jiacheng and Joven Araus, Alberto and Leigh, Nicholas D and Yun, Maximina and Simon, András and Tosches, Maria Antonietta}},
  issn         = {{1095-9203}},
  keywords     = {{Animals; Atlases as Topic; Biological Evolution; Neocortex/cytology; Neurons/metabolism; Pleurodeles/physiology; Telencephalon/cytology; Transcriptome}},
  language     = {{eng}},
  number       = {{6610}},
  pages        = {{1--11}},
  publisher    = {{American Association for the Advancement of Science (AAAS)}},
  series       = {{Science (New York, N.Y.)}},
  title        = {{Cell-type profiling in salamanders identifies innovations in vertebrate forebrain evolution}},
  url          = {{http://dx.doi.org/10.1126/science.abp9186}},
  doi          = {{10.1126/science.abp9186}},
  volume       = {{377}},
  year         = {{2022}},
}