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Cytotoxic activity of Holothuria tubulosa (Echinodermata) coelomocytes

Mirella Vazzana1, Monica Celi1, Marco Chiaramonte1

  • 1Dept. STEBICEF, Università degli Studi di Palermo, Via Archirafi, 18, 90123, Palermo, Italy.

Fish & Shellfish Immunology
|November 16, 2017
PubMed

The immune system of marine invertebrates, in particular that of holothurians, still requires further study. Our research showed that coelomocyte cells contained in the coelomic fluid of the sea cucumber, Holothuria tubulosa, are able to lyse, in vitro, red blood cells in rabbits and sheep. A plaque-forming assay showed spherule cells to be the effector cells, able to release cytotoxic molecules after xenogenic cell contact. The coelomocyte lysate supernatant, analysed by polyacrylamide gel electrophoresis overlay technique, using rabbit and sheep erythrocytes, showed two different haemolytic protein patterns: one calcium dependent and the other calcium independent. The fractions of each pattern were resolved on a polyacrylamide gel and calcium-dependent and independent coelomocyte lysate patterns were compared.

Keywords:
CoelomocytesHaemolytic activityHolothuria tubulosaLysis plaque assayOverlay assay

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