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Secretion of extracellular vesicles during ontogeny of the tapeworm Schistocephalus solidus. 2023

Hynek Mazanec, and Nikol Buskova, and Zdenko Gardian, and Roman Kuchta
Institute of Parasitology, Biology Centre, Czech Academy of Sciences, Ceske Budejovice, Czech Republic.

We provide the first ultrastructural evidence of the secretion of extracellular vesicles (EVs) across all parasitic stages of the tapeworm Schistocephalus solidus (Müller, 1776) (Cestoda: Diphyllobothriidea) using a laboratory life cycle model. We confirmed the presence of EV-like bodies in all stages examined, including the hexacanth, procercoids in the copepod, Macrocyclops albidus (Jurine, 1820), plerocercoids from the body cavity of the three-spined stickleback, Gasterosteus aculeatus Linnaeus, and adults cultivated in artificial medium. In addition, we provide description of novel tegumental structures potentially involved in EV biogenesis and the presence of unique elongated EVs similar to those previously described only in Fasciola hepatica Linnaeus, 1758 (Trematoda), Hymenolepis diminuta (Rudolphi, 1819) (Cestoda), and Trypanosoma brucei Plimmer et Bradford, 1899 (Kinetoplastida).

UI MeSH Term Description Entries
D002589 Cestoda A subclass of segmented worms comprising the tapeworms. Raillietina,Tapeworms,Cestodes,Cestodas,Cestode,Raillietinas,Tapeworm
D002590 Cestode Infections Infections with true tapeworms of the helminth subclass CESTODA. Bertielliasis,Cenuriasis,Coenuriasis,Dipylidiasis,Raillietiniasis,Tapeworm Infection,Bertielliases,Cenuriases,Cestode Infection,Coenuriases,Dipylidiases,Infection, Cestode,Infection, Tapeworm,Infections, Cestode,Infections, Tapeworm,Raillietiniases,Tapeworm Infections
D000067128 Extracellular Vesicles Membrane limited structures derived from cell membranes and cytoplasmic material, and released into EXTRACELLULAR SPACE. They circulate through the EXTRACELLULAR FLUID and through the peripheral blood in the MICROVASCULATURE where cells, much larger, cannot, thereby affecting a variety of intercellular communication processes. Apoptotic Bodies,Exovesicles,Apoptotic Body,Bodies, Apoptotic,Body, Apoptotic,Exovesicle,Extracellular Vesicle,Vesicle, Extracellular,Vesicles, Extracellular
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D023701 Smegmamorpha Group of fish under the superorder Acanthopterygii, separate from the PERCIFORMES, which includes swamp eels, mullets, sticklebacks, seahorses, spiny eels, rainbowfishes, and KILLIFISHES. The name is derived from the six taxa which comprise the group. (From http://www.nanfa.org/articles/Elassoma/elassoma.htm, 8/4/2000) Gasterosteidae,Mullets,Seahorses,Sticklebacks,Swamp Eels,Eels, Swamp,Gasterosteiformes,Synbranchidae,Eel, Swamp,Mullet,Seahorse,Stickleback,Swamp Eel
D033342 Copepoda A huge subclass of mostly marine CRUSTACEA, containing over 14,000 species. The 10 orders comprise both planktonic and benthic organisms, and include both free-living and parasitic forms. Planktonic copepods form the principle link between PHYTOPLANKTON and the higher trophic levels of the marine food chains. Calanoida,Cyclopoida,Harpacticoida,Lepeophtheirus salmonis,Mesocyclops,Salmon Louse,Siphonostomatoida,Copepods,Calanoidas,Copepod,Copepodas,Cyclopoidas,Harpacticoidas,Lepeophtheirus salmoni,Louse, Salmon,Louses, Salmon,Mesocyclop,Salmon Louses,Siphonostomatoidas,salmoni, Lepeophtheirus

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