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Updated: Sep 6, 2025

Chicken Recombinant Limbs Assay to Understand Morphogenesis, Patterning, and Early Steps in Cell Differentiation
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Distinct gene expression dynamics in developing and regenerating crustacean limbs.

Chiara Sinigaglia1, Alba Almazán1, Marie Lebel1

  • 1Institut de Génomique Fonctionnelle de Lyon, CNRS, École Normale Supérieure de Lyon, and Université Claude Bernard Lyon-1, Lyon 69007, France.

Proceedings of the National Academy of Sciences of the United States of America
|July 1, 2022
PubMed
Summary
This summary is machine-generated.

Animal regeneration does not perfectly mirror embryonic development. Gene expression patterns during leg regeneration in crustaceans show significant variation, unlike the predictable patterns seen during development.

Keywords:
Parhyale hawaiensiscrustaceanleg developmentregenerationtranscriptional profiling

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Area of Science:

  • Developmental Biology
  • Regenerative Biology
  • Crustacean Biology

Background:

  • Animals capable of regeneration can regrow lost body parts, similar to embryonic development.
  • It remains unclear if the gene expression dynamics during regeneration mirror those of initial development.

Purpose of the Study:

  • To investigate if leg regeneration in the crustacean *Parhyale hawaiensis* follows similar temporal gene expression patterns as embryonic leg development.
  • To compare the transcriptomic dynamics of development and regeneration.

Main Methods:

  • Transcriptomics approach applied to *Parhyale hawaiensis*.
  • Analysis of gene expression patterns during embryonic leg development.
  • Analysis of gene expression patterns during leg regeneration, accounting for physiological variations like the molting cycle.

Main Results:

  • Embryonic leg development exhibits stereotypic temporal gene expression patterns.
  • Leg regeneration displays significant variation in gene expression dynamics, influenced by individual animal physiology and the molting cycle.
  • Distinct phases of leg regeneration were identified by dissecting transcriptional signals.

Conclusions:

  • While both development and regeneration utilize similar gene sets, the temporal deployment of these genes differs significantly.
  • Regeneration does not systematically align with the temporal gene expression patterns observed during embryonic development in *Parhyale hawaiensis*.