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Updated: Jun 4, 2026
08:48
Methods for the Study of Regeneration in Stentor
Published on: June 13, 2018
Dynamic cell fate transitions during morphallactic regeneration
Clara Nuninger1,2, Panagiotis Papasaikas1,3, Sera L Weevers1,2
1Friedrich Miescher Institute for Biomedical Research, Fabrikstrasse 24, Basel, Switzerland.
Nature Communications
|June 2, 2026
Summary
Morphallactic regeneration in Hydra involves a temporal cell identity sequence, with proximal structures appearing before distal ones. This study reveals dynamic Wnt signaling crucial for re-establishing body patterning during regeneration.
Area of Science:
- Developmental Biology
- Regenerative Medicine
- Cell Biology
Background:
- Epimorphic regeneration mechanisms are well-studied.
- Morphallactic regeneration, involving tissue remodeling, has less understood spatiotemporal dynamics.
Purpose of the Study:
- To elucidate the spatiotemporal dynamics of morphallactic regeneration in Hydra.
- To investigate cell identity transitions and signaling activity during regeneration.
Main Methods:
- Time-course single-cell RNA sequencing (scRNA-seq) of regenerating Hydra tissue.
- Analysis of transcriptional signatures and Wnt signaling dynamics.
Main Results:
- Morphallaxis shows a temporal sequence of cell identity re-emergence, with proximal signatures preceding distal ones.
- Wnt signaling remains dynamically active and changes composition over time at the amputation site.
Conclusions:
- Provides a high-resolution view of cell state transitions and signaling in morphallactic regeneration.
- Offers a framework for understanding organizer function and axial patterning re-establishment in Hydra.
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