In Vitro Production of Tumor Necrosis Factor-α by Adherent Human Peripheral Blood Mononuclear Cells incubated with Killed Coccidioidal Arthroconidia and Spherules

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Abstract

We examined thein vitro production of tumor necrosis factor (TNF) by adherent human peripheral blood mononuclear cells (MNL) incubated with arthroconidia or spherules derived from the dimorphic fungus Coccidioides immitis. Using a bioassay measuring the percentage cytotoxicity of L929 cells, arthroconidia and spherules induced the production of measurable amounts of TNF by MNL. Both the arthroconidial and spherule preparations contained <0.01 ng/ml of endotoxin, below that needed to induce cytotoxicity in the bioassay. Based on ELISA, the vast majority of TNF induced by arthtoconidia or spherules was TNF-α, with minimal production of TNF-β. These are the first data to show the production of TNF in human coccidioidomycosis.

Original languageEnglish (US)
Pages (from-to)248-255
Number of pages8
JournalCellular Immunology
Volume153
Issue number1
DOIs
StatePublished - Jan 1994

ASJC Scopus subject areas

  • Immunology

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