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Article citations


Martinez, F.O. and Gordon, S. (2014) The M1 and M2 Paradigm of Macrophage Activation, Time for Reassessment. F1000Prime Reports, 6, 13.

has been cited by the following article:

  • TITLE: Differential Effects of Alternative Glycoforms of IgG on Human Monocytes and Macrophages: Sialylated IgG Induces Novel Expression Signatures of Cell Surface Markers, Cytokines, and Chemokines

    AUTHORS: Eric D. Bruder, John O. Richards, Karen M. Michel, Martin Oaks

    KEYWORDS: Anti-Inflammatory, IgG, IVIG, Monocytes, Macrophages, Sialic Acid

    JOURNAL NAME: Open Journal of Immunology, Vol.6 No.2, June 9, 2016

    ABSTRACT: The effector functions elicited by the fragment crystallizable (Fc) region of immunoglobulin G (IgG) antibodies are subject to variation by the presence of terminal sialic acid (Sia) residues at asparagine-297 (Asn-297). We have previously shown that the sialic acid-containing (Sia+) fraction of intravenous immune globulin (IVIG) influences cell surface marker expression and cytokine/ chemokine secretion during the differentiation and maturation of human dendritic cells (DC). The present study examined the effects of Sia+ IgG on human peripheral blood mononuclear cell (PBMC)-derived monocyte and macrophage surface marker expression and cytokine/chemokine secretion. Sia+ IgG induced increased expression of CD80 and dendritic cell immunoreceptor (DCIR) on monocytes, whereas the expression of HLA-DR was decreased. In addition, the production of IL-6, TNFα, IL-1β, and CXCL1 by monocytes was profoundly increased by treatment with Sia+ IgG. Sia+ IgG also increased the expression of cell surface markers associated with macrophage polarization (e.g. CD40 and CD206) on monocytes. In macrophage-colony stimulating factor (MCSF) generated macrophages, Sia+ IgG induced increased production of numerous cytokines/ chemokines including IL-6, TNFα, CXCL1, and IL-10, and the expression of the macrophage surface marker CD163. Our data extended prior observations of Sia+ IgG on DC function and showed that Sia+ IgG was able to differentially modulate multiple pathways in monocytes and macrophages. Our data indicate that the Sia+ fraction of IVIG possesses the ability to influence inflammatory processes in multiple immune cell types and induces novel signatures in cell surface marker expression and cytokine/chemokine production.