Evidence map›Paper›PMID 26268193›Full record

ArticleNature2015

The octopus genome and the evolution of cephalopod neural and morphological novelties.

Caroline B Albertin, Oleg Simakov, Therese Mitros, Z Yan Wang, Judit R Pungor, Eric Edsinger-Gonzales, Sydney Brenner, Clifton W Ragsdale, Daniel S Rokhsar

Open access · bronzeAbstract read
In one paragraph

Article in Nature, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 299 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
299citing papers in PubMed, 1 pooled it
140.3field-weighted citation impact, top 1% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

299 citing papers in PubMed, 1 synthesis or guideline pooled it, 641 citations in OpenAlex.

  1. Cephalopod Behavior: From Neural Plasticity to Consciousness.Frontiers in systems neuroscience · 2021
    Pooled it
  2. Article
  3. Article
  4. Article
  5. Article
  6. Evolution of a core ribosomal innovation in octopus.bioRxiv : the preprint server for biology · 2026
    Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. MolluscaGenes: A Transcriptomic Database for the Mollusca.bioRxiv : the preprint server for biology · 2026
    Article
  13. Article
  14. Article
  15. Article
  16. Transposon Ecology and the Octopus Genome.BioEssays : news and reviews in molecular, cellular and developmental biology · 2026
    Review
  17. Article
  18. Article
  19. Article
  20. Review

239 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

9 authors at 3 institutions in 2 countries.

Caroline B AlbertinDepartment of Organismal Biology and Anatomy, University of Chicago, Chicago, Illinois 60637, USA.
Oleg Simakov1] Okinawa Institute of Science and Technology Graduate University, Onna, Okinawa 9040495, Japan [2] Centre for Organismal Studies, University of Heidelberg, 69117 Heidelberg, Germany.
Therese MitrosDepartment of Molecular and Cell Biology, University of California, Berkeley, California 94720, USA.
Z Yan WangDepartment of Neurobiology, University of Chicago, Chicago, Illinois 60637, USA.
Judit R PungorDepartment of Neurobiology, University of Chicago, Chicago, Illinois 60637, USA.
Eric Edsinger-Gonzales1] Okinawa Institute of Science and Technology Graduate University, Onna, Okinawa 9040495, Japan [2] Department of Molecular and Cell Biology, University of California, Berkeley, California 94720, USA.
Sydney BrennerOkinawa Institute of Science and Technology Graduate University, Onna, Okinawa 9040495, Japan.
Clifton W Ragsdale1] Department of Organismal Biology and Anatomy, University of Chicago, Chicago, Illinois 60637, USA [2] Department of Neurobiology, University of Chicago, Chicago, Illinois 60637, USA.
Daniel S Rokhsar1] Okinawa Institute of Science and Technology Graduate University, Onna, Okinawa 9040495, Japan [2] Department of Molecular and Cell Biology, University of California, Berkeley, California 94720, USA [3] Department of Energy Joint Genome Institute, Walnut Creek, California 94598, USA.
University of Chicago · USOkinawa Institute of Science and Technology Graduate University · JPUniversity of California, Berkeley · US

Funding

Re-Engineering Translational Research at the University of ChicagoUL1TR000430 · NCATS · UNIVERSITY OF CHICAGO · PI SOLWAY, JULIAN · 2012 to 2016
$20.2M
Training Program in Developmental BiologyT32HD055164 · NICHD · UNIVERSITY OF CHICAGO · PI Sally Horne-Badovinac, Paschalis Kratsios · 2008 to 2026
$3.6M
Genome Sequencer FLXS10RR029668 · NCRR · UNIVERSITY OF CALIFORNIA BERKELEY · PI NGAI, JOHN J. · 2010 to 2010
$623k
Illumina Sequencer to Facilitate Functional Genomics at BerkeleyS10RR027303 · NCRR · UNIVERSITY OF CALIFORNIA BERKELEY · PI TAYLOR, JOHN W. · 2010 to 2010
$500k
Gene Manipulation of Cephalopod DevelopmentR03HD056094 · NICHD · UNIVERSITY OF CHICAGO · PI RAGSDALE, CLIFTON W. · 2008 to 2009
$154k
Transcriptome resources for a cephalopod model systemR03HD064887 · NICHD · UNIVERSITY OF CHICAGO · PI RAGSDALE, CLIFTON W. · 2013 to 2014
$150k
NCATS NIH HHS UL1 TR000430NCRR NIH HHS S10 RR027303NCRR NIH HHS S10RR027303NCRR NIH HHS S10 RR029668NCRR NIH HHS S10RR029668NICHD NIH HHS R03 HD056094NICHD NIH HHS R03 HD064887NICHD NIH HHS R03HD064887NICHD NIH HHS T32 HD055164
6 · The paper itself

Abstract

Coleoid cephalopods (octopus, squid and cuttlefish) are active, resourceful predators with a rich behavioural repertoire. They have the largest nervous systems among the invertebrates and present other striking morphological innovations including camera-like eyes, prehensile arms, a highly derived early embryogenesis and a remarkably sophisticated adaptive colouration system. To investigate the molecular bases of cephalopod brain and body innovations, we sequenced the genome and multiple transcriptomes of the California two-spot octopus, Octopus bimaculoides. We found no evidence for hypothesized whole-genome duplications in the octopus lineage. The core developmental and neuronal gene repertoire of the octopus is broadly similar to that found across invertebrate bilaterians, except for massive expansions in two gene families previously thought to be uniquely enlarged in vertebrates: the protocadherins, which regulate neuronal development, and the C2H2 superfamily of zinc-finger transcription factors. Extensive messenger RNA editing generates transcript and protein diversity in genes involved in neural excitability, as previously described, as well as in genes participating in a broad range of other cellular functions. We identified hundreds of cephalopod-specific genes, many of which showed elevated expression levels in such specialized structures as the skin, the suckers and the nervous system. Finally, we found evidence for large-scale genomic rearrangements that are closely associated with transposable element expansions. Our analysis suggests that substantial expansion of a handful of gene families, along with extensive remodelling of genome linkage and repetitive content, played a critical role in the evolution of cephalopod morphological innovations, including their large and complex nervous systems.

Indexed as

Evolution, MolecularAnimalsAnimal StructuresCadherinsDecapodiformesDNA Copy Number VariationsDNA Transposable ElementsGenomeGenomicsIon ChannelsNervous SystemOctopodiformesOrgan SpecificityPhylogenyRNA EditingRNA, MessengerCadherinsDNA Transposable ElementsIon ChannelsRNA, MessengerTranscription Factors

Identifiers

PMID26268193
PMCPMC4795812
OpenAlexW1537776120

What OpenQuestion holds

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.