Publication:
The lungfish cocoon is a living tissue with antimicrobial functions

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2021_Heimroth.pdf(4.54 MB)
Date
2021-11-17
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Authors
Heimroth, Ryan Darby ; Casadei, Elisa ; Benedicenti, Ottavia ; Amemiya, Chris Tsuyoshi ; Muñoz, Pilar ; Salinas, Irene
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Publisher
AAAS
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Sanidad Animal
DOI
DOI: 10.1126/sciadv.abj0829
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info:eu-repo/semantics/article
Description
â“’ 2021. The authors. This document is made available under the CC-BY-NC 4.0 license http://creativecommons.org/licenses/by-nc /4.0/ This document is the accepted version of a published work that appeared in final form in Science Advances. To access the final work, see DOI: 10.1126/sciadv.abj0829
Abstract
Terrestrialization is an extreme physiological adaptation by which African lungfish survive dry seasons. For months and up to several years, lungfish live inside a dry mucus cocoon that protects them from desiccation. Light and electron microscopy reveal that the lungfish cocoon is a living tissue that traps bacteria. Transcriptomic analyses identify a global state of inflammation in the terrestrialized lungfish skin characterized by granulocyte recruitment. Recruited granulocytes transmigrate into the cocoon where they release extracellular traps. In vivo DNase I surface spraying during terrestrialization results in dysbiosis, septicemia, skin wounds, and hemorrhages. Thus, lungfish have evolved unique immunological adaptations to protect their bodies from infection for extended periods of time while living on land. Trapping bacteria outside their bodies may benefit estivating vertebrates that undergo metabolic torpor.
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http://hdl.handle.net/10201/139778
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