Cited by 190Developmental Biology and Gene RegulationMarine Invertebrate Physiology and EcologyGenomics and Chromatin Dynamics

Evolution of Antp-class genes and differential expression of Hydra Hox/paraHox genes in anterior patterning

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Gauchat, Dominique, Mazet, Françoise, Berney, Cédric, Schummer, Michèl, Kreger, Sylvia, Pawlowski, Jan, Galliot, Brigitte·2000·Proceedings of the National Academy of Sciences

Abstract

The conservation of developmental functions exerted by Antp-class homeoproteins in protostomes and deuterostomes suggested that homologs with related functions are present in diploblastic animals. Our phylogenetic analyses showed that Antp-class homeodomains belong either to non-Hox or to Hox/paraHox families. Among the 13 non-Hox families, 9 have diploblastic homologs, Msx, Emx, Barx, Evx, Tlx, NK-2, and Prh/Hex, Not, and Dlx, reported here. Among the Hox/paraHox, poriferan sequences were not found, and the cnidarian sequences formed at least five distinct cnox families. Two are significantly related to the paraHox Gsx (cnox-2) and the mox (cnox-5) sequences, whereas three display some relatedness to the Hox paralog groups 1 (cnox-1), 9/10 (cnox-3) and the paraHox cdx (cnox-4). Intermediate Hox/paraHox genes (PG 3 to 8 and lox) did not have clear cnidarian counterparts. In Hydra, cnox-1, cnox-2, and cnox-3 were not found chromosomally linked within a 150-kb range and displayed specific expression patterns in the adult head. During regeneration, cnox-1 was expressed as an early gene whatever the polarity, whereas cnox-2 was up-regulated later during head but not foot regeneration. Finally, cnox-3 expression was reestablished in the adult head once it was fully formed. These results suggest that the Hydra genes related to anterior Hox/paraHox genes are involved at different stages of apical differentiation. However, the positional information defining the oral/aboral axis in Hydra cannot be correlated strictly to that characterizing the anterior-posterior axis in vertebrates or arthropods.

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Crossref · 10.1073/pnas.97.9.4493

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  • The Cnox4-Pc homeodomain carries diagnostic amino acids K4, R10, and D29, indicating some relatedness to posterior Hox genes of PG-9,10.

    “The Cnox4-Pc homeodomain carries those diagnostic amino acids (K4, R10, D29), therefore it has some relatedness with the”

    From Conservation of Hox/ParaHox-Related Genes in the Early Development of a Cnidarian (2001) · cites this paper as Gauchat et al., 2000

  • One group of Cnox-3 class genes shares specific amino acids with the bilaterian PG-9,10 homeodomain.

    “As pointed out by Gauchat et al. (2000), one group of the Cnox-3 class genes shares specific amino acids with the homeodomain of the bilaterian PG-9,10.”

    From Conservation of Hox/ParaHox-Related Genes in the Early Development of a Cnidarian (2001) · cites this paper as Gauchat et al., 2000

  • Similarities in the homeodomain and N terminus of Gsx with bilaterian sequences confirm that ParaHox genes are present in cnidarians.

    “In the case of Gsx, similarities inside the homeodomain and at the N terminus of the protein (not shown) with corresponding sequences from bilaterians confirm once more that ParaHox genes are present in cnidarians (Gauchat et al., 2000;Kourakis and Martindale, 2000).”

    From Conservation of Hox/ParaHox-Related Genes in the Early Development of a Cnidarian (2001) · cites this paper as Gauchat et al., 2000

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Research works printed but not linked: 3

  1. [32]Bürglin T R. In: Guide to the Homeobox Genes. Duboule D, editor. New York: Oxford Univ. Press; 1994. pp. 27–71. [Google Scholar]
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Authors
Gauchat, D., Mazet, F., Berney, C., Schummer, M., Kreger, S., Pawlowski, J., & Galliot, B.
Affiliations
University of Geneva (CH)
Venue
Proceedings of the National Academy of Sciences
Published
2000-04-25
Volume
97
Issue
9
Pages
4493-4498
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2090110356
Cited by
190
References
53
Citations by year
2025: 1 · 2024: 1 · 2023: 3 · 2022: 2 · 2020: 5 · 2019: 5 · 2018: 2 · 2017: 3 · 2016: 5 · 2015: 5 · 2014: 1 · 2013: 1 · 2012: 10
FWCI
5.66
Type
journal article
Language
en
Open access
Locations
  • Proceedings of the National Academy of Sciences (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • Archive ouverte UNIGE (University of Geneva) (publishedVersion)
  • Archive ouverte UNIGE (University of Geneva) (submittedVersion, cc-by)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Developmental Biology and Gene Regulation
  • Physical Sciences › Earth and Planetary Sciences › Paleontology › Marine Invertebrate Physiology and Ecology
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Genomics and Chromatin Dynamics
Keywords
Hydra, anterior patterning, head regeneration, oral-aboral axis, anterior-posterior axis, gene expression patterns
MeSH terms
Amino Acid Sequence, Animals, Cloning, Molecular, Genes, Homeobox, Multigene Family, Hydra, Molecular Sequence Data, Nuclear Proteins, Phylogeny, Transcription Factors, Electrophoresis, Gel, Pulsed-Field, Conserved Sequence, Homeodomain Proteins, Evolution, Molecular, Body Patterning, Antennapedia Homeodomain Protein

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