Identification of a cytolytic protein in the coelomic fluid of Eisenia foetida earthworms

Martin Bilej, Lea Brys, Alain Beschin, Rudolf Lucas, Edilbert Vercauteren, Radka Hanušová, Patrick De Baetselier

Research output: Contribution to journalArticlepeer-review

75 Scopus citations


Total coelomic fluid of earthworms Eisenia foetida (Oligochaeta, Annelida) is capable of lysing different mammalian tumor cell lines. This cytolytic activity is different from tumor necrosis factor (TNF)-mediated lysis and is not due to proteolysis. Total coelomic fluid was subjected to ion-exchange chromatography separation and a fraction with prominent cytolytic activity was used to elicit monoclonal antibodies that were screened for their capacity to neutralize the cytolytic effect of total coelomic fluid. One of the prepared neutralizing IgG antibodies was used for the immunoaffinity purification of a cytolytic factor from total coelomic fluid. SDS-PAGE and Western blot analyses revealed a protein band with an apparent molecular weight of 42 kDa. This cytolytic protein (termed CCF-1 or coelomic cytolytic factor 1) can be adsorbed on the surface of opsonized particles and may be involved in opsonizing and hemolytic effects of coelomic fluid.

Original languageEnglish (US)
Pages (from-to)123-128
Number of pages6
JournalImmunology Letters
Issue number1-2
StatePublished - Feb 1995
Externally publishedYes


  • Coelomic fluid
  • Cytolytic activity
  • Eisenia foetida
  • Hemolysis
  • Tumor cell line

ASJC Scopus subject areas

  • Immunology and Allergy
  • Immunology


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