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Open AccessArticle

Nematode Autotomy Requires Molting and Entails Tissue Healing without Obvious Regeneration

Department of Biochemistry, University of Oxford, Oxford OX1 3QU, UK
J. Dev. Biol. 2019, 7(4), 21; https://doi.org/10.3390/jdb7040021
Received: 5 July 2019 / Revised: 30 October 2019 / Accepted: 21 November 2019 / Published: 23 November 2019
(This article belongs to the Special Issue Caenorhabditis elegans - A Developmental Genetic Model System)
Autotomy in C. elegans, which results in the severing of the body into two fragments, has been observed as a response to late larval worm-star formation after exposure to a bacterial surface pathogen. It was found that autotomy can occur in both hermaphroditic and gonochoristic nematode species, and during either the L3 or the L4 molt. Severing was hypothesized to be driven by a ‘balloon-twisting’ mechanism during molting but was found to be independent of lethargus-associated flipping. Extensive healing and apparent tissue fusion were seen at the site of scission. No obvious regeneration of lost body parts was seen in either L4 or adult truncated worms. A variety of mutants defective in processes of cell death, healing, regeneration, responses to damage, stress or pathogens were found to be competent to autotomize. Mutants specifically defective in autotomy have yet to be found. Autotomy may represent a modification of the essential normal process of molting. View Full-Text
Keywords: autotomy; nematode; C. elegans; molting; ecdysis; wound-healing; regeneration autotomy; nematode; C. elegans; molting; ecdysis; wound-healing; regeneration
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MDPI and ACS Style

Hodgkin, J. Nematode Autotomy Requires Molting and Entails Tissue Healing without Obvious Regeneration. J. Dev. Biol. 2019, 7, 21.

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