Innate immune properties of the immortalized macrophage cell line I-9.5 |
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Authors: | Wendy Chang Szu-Hui Yeh David B Drath |
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Institution: | (1) Department of Biological Science, California State University, 92634-9480 Fullerton, California |
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Abstract: | Summary A colony stimulating factor-1-dependent macrophage cell line, I-9.5, originally derived from a BALB/c splenic macrophage colony,
was maintained in culture and examined for the expression of certain properties key to its innate immune function. Chemotaxis,
phagocytosis, and superoxide release were assessed in this cell line and compared to either freshly isolated elicited murine
peritoneal or splenic macrophages from BALB/c mice. Three separate experiments indicated that I-9.5 displayed comparable phagocytosis
of14C-radio-labeledStaphylococus aureus and similar levels of superoxide release in response to opsonized zymosan. I-9.5, however, demonstrated impaired chemotaxis
toward the chemoattractant, N-formyl-methionyl-leucyl-phenylalanine, and displayed impaired random migration in response to
a balanced salt solution. This observation suggests that I-9.5 may serve as an important model for elucidating the structural
and molecular correlates of chemotaxis. |
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Keywords: | culture cell lines colony stimulating factor macrophage |
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