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23464355
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Interleukin-27 (IL-27) is a heterodimeric cytokine of the IL-12 family that is produced primarily by antigen-presenting cells and is immunosuppressive toward a variety of immune cell types.
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23464355
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We show that IL-27 gene expression is elevated in cord blood-derived macrophages relative to macrophages originating from healthy adults.
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We also evaluated the duration over which elevated IL-27 gene expression may impact immune responses in mice.
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Age-dependent analysis of IL-27 gene expression indicated that levels of IL-27 remained significantly elevated throughout infancy and then declined in adult mice.
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Neutralization of IL-27 in neonatal macrophages improved the ability of these cells to limit bacterial replication.
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Moreover, neutralization of IL-27 during incubation with the Mycobacterium bovis bacillus Calmette-Guérin vaccine augmented the level of interferon-γ elicited from allogeneic CD4+ T lymphocytes.
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This suggests that blocking IL-27 during vaccination and infection may improve immune responses in newborn and infant populations.
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