Cited by 115Marine Invertebrate Physiology and EcologyDevelopmental Biology and Gene RegulationPlanarian Biology and Electrostimulation

The Mesoderm Specification Factor Twist in the Life Cycle of Jellyfish

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Spring, Jürg, Yanze, Nathalie, Middel, Arnoud M., Stierwald, Michael, Gröger, Hans, Schmid, Volker·2000·Developmental Biology

Abstract

The basic helix-loop-helix (bHLH) transcription factor Twist is highly conserved from Drosophila to vertebrates and plays a major role in mesoderm specification of triploblasts. The presence of a Twist homologue in diploblasts such as the cnidarian Podocoryne carnea raises questions on the evolution of mesoderm, the third cell layer characteristic for triploblasts. Podocoryne Twist is expressed in the early embryo until the myoepithelial cells of the larva differentiate and then again during medusa development. There, the gene is detected first when the myoepithelial cells of the polyp dedifferentiate to form the medusa bud and later Twist is found transiently in the entocodon, a mesoderm-like cell layer which differentiates into the smooth muscle and striated muscle of the bell. On the other hand, in later bud stages and the medusa, expression is seen where non-muscle tissues differentiate. Experimental analysis of in vitro transdifferentiation and regeneration demonstrates that Twist activity is not needed when isolated striated muscle regenerate medusa organs. Developmental roles of Twist are discussed with respect to early animal evolution from a common ancestor of cnidarians and bilaterians.

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Crossref · 10.1006/dbio.2000.9956

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Authors
Spring, J., Yanze, N., Middel, A. M., Stierwald, M., Gröger, H., & Schmid, V.
Affiliations
University of Basel (CH)
Corresponding author
Schmid, Volker
Venue
Developmental Biology
Publisher
Elsevier BV
Published
2000-12
Volume
228
Issue
2
Pages
363-375
ISSN
0012-1606 (ISSN-L)
OpenAlex
W2066315953
Cited by
115
References
57
Citations by year
2026: 2 · 2025: 2 · 2024: 3 · 2023: 3 · 2022: 1 · 2020: 1 · 2019: 1 · 2018: 2 · 2017: 2 · 2016: 2 · 2015: 5 · 2014: 2 · 2013: 1 · 2012: 5
FWCI
9.75
Type
journal article
Language
en
Open access
Locations
  • Developmental Biology (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Science Foundation
  • Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung
Topics
  • Physical Sciences › Earth and Planetary Sciences › Paleontology › Marine Invertebrate Physiology and Ecology
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Developmental Biology and Gene Regulation
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Planarian Biology and Electrostimulation
Keywords
Twist, bHLH transcription factors, mesoderm specification, jellyfish, Podocoryne carnea, cnidarian evolution, medusa development, myoepithelial cells, transdifferentiation, regeneration
MeSH terms
Amino Acid Sequence, Animals, Base Sequence, Cloning, Molecular, Drosophila, Biological Evolution, Larva, Life Cycle Stages, Mesoderm, Morphogenesis, Nuclear Proteins, Transcription Factors, Vertebrates, Sequence Alignment, Helix-Loop-Helix Motifs, Gene Expression Regulation, Developmental, Reverse Transcriptase Polymerase Chain Reaction, Drosophila Proteins, Scyphozoa, Twist-Related Protein 1

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