Characterization of bovine homologues of granulysin and NK-lysin

Janice J. Endsley, Jason L. Furrer, Mark A. Endsley, Mark A. McIntosh, Alexander C. Maue, W. Ray Waters, David R. Lee, D. Mark Estes

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78 Scopus citations

Abstract

Granulysin and NK-lysin are antimicrobial proteins found in the granules of human and swine cytotoxic lymphocytes. A murine counterpart to granulysin has not been identified to date, indicating the importance of additional models to fully characterize the role of granulysin-like molecules in the immune response to infectious disease. Two partial nucleotide sequences corresponding to the complete functional domain of granulysin and NK-lysin were amplified from bovine PBMC mRNA. Following stimulation with phorbol ester and calcium ionophore, expression of the bovine gene was detected in CD3+ T cells, CD4 + T cells, CD8+ T cells, WC1+ γδ T cells, and PBMC depleted of CD3+ T cells, but was absent in CD21 + cells and CD14+ cells. Intracellular flow cytometry and immunoblotting confirmed the presence of protein corresponding to the bovine granulysin homologue in activated T lymphocytes and PBMC. Synthetic human, bovine, and swine peptides corresponding to the C terminus of helix 2 through helix 3 region of granulysin displayed potent antimicrobial activity against Escherichia coli, Salmonella enteritidis, Staphylococcus aureus, and Mycobacterium bovis bacillus Calmette-Guérin. Human and bovine peptides corresponding to helix 2 displayed antimycobacterial activity against M. bovis bacillus Calmette-Guérin. Expression of the bovine gene was detected in laser microscopy-dissected lymph node lesions from an M. bovis-infected animal. The identification of a biologically active bovine homologue to granulysin demonstrates the potential of the bovine model in characterizing the role of granulysin in the immune response to a variety of infectious agents.

Original languageEnglish (US)
Pages (from-to)2607-2614
Number of pages8
JournalJournal of Immunology
Volume173
Issue number4
DOIs
StatePublished - Aug 15 2004

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ASJC Scopus subject areas

  • Immunology and Allergy
  • Immunology

Cite this

Endsley, J. J., Furrer, J. L., Endsley, M. A., McIntosh, M. A., Maue, A. C., Waters, W. R., Lee, D. R., & Estes, D. M. (2004). Characterization of bovine homologues of granulysin and NK-lysin. Journal of Immunology, 173(4), 2607-2614. https://doi.org/10.4049/jimmunol.173.4.2607