Related Experiment Video

Updated: Jul 14, 2026

Characterization of Human Monocyte-derived Dendritic Cells by Imaging Flow Cytometry: A Comparison between Two Monocyte Isolation Protocols
08:31

Characterization of Human Monocyte-derived Dendritic Cells by Imaging Flow Cytometry: A Comparison between Two Monocyte Isolation Protocols

Published on: October 18, 2016

Immune complexes inhibit differentiation, maturation, and function of human monocyte-derived dendritic cells

Evangelina A Laborde1, Silvia Vanzulli, Macarena Beigier-Bompadre

  • 1Laboratory of Immunology, Institute of Hematologic Research, Academia Nacional de Medicina, Buenos Aires, Argentina.

Journal of Immunology (Baltimore, Md. : 1950)
|June 21, 2007
PubMed

Insights

Immune complexes (IC) alter dendritic cell (DC) development by interacting with Fc receptors. This impairs T cell response and promotes inflammation, potentially contributing to autoimmune diseases.

Area of Science:

  • Immunology
  • Cell Biology
  • Dendritic Cell Biology

Background:

  • Immune complexes (IC) binding to Fc gamma receptors (FcgammaRs) on immune cells initiate critical regulatory and effector responses.
  • Dendritic cells (DCs) are key antigen-presenting cells that bridge innate and adaptive immunity.
  • Dysfunctional DCs are implicated in the pathogenesis of autoimmune disorders.

Purpose of the Study:

  • To investigate the impact of IC on the differentiation, maturation, and function of human monocyte-derived DCs.
  • To elucidate the specific Fcgamma receptors involved in mediating IC effects on DCs.
  • To understand how IC-induced alterations in DCs may contribute to autoimmune disease development.

Main Methods:

  • Human monocytes were differentiated into DCs with or without IC.
  • Flow cytometry was used to analyze DC surface marker expression (CD1a, CD14, MHC II, CD68, CD83, CD86, CD40).
  • Cytokine production (IL-12, IL-10, CCL22, CXCL8, CCL2) and T cell proliferation assays were performed.

Main Results:

  • DCs cultured with IC (IC-DC) exhibited altered differentiation, with lower CD1a and higher CD14 and CD68 expression.
  • IC binding primarily involved FcgammaRI and FcgammaRII, leading to immature DC phenotypes with high CD83, CD86, and CD40.
  • IC-DC showed reduced IL-12 production, impaired endocytic activity, and decreased T cell proliferation, alongside a proinflammatory cytokine profile.

Conclusions:

  • IC significantly disrupt DC differentiation and maturation, skewing them towards a proinflammatory phenotype.
  • This IC-induced DC dysfunction, characterized by impaired antigen presentation and T cell activation, mirrors DC states in autoimmune diseases like lupus and arthritis.
  • Altered DC maturation by IC may play a crucial role in the pathogenesis of autoimmune diseases.

More Related Videos

Generation of Human Monocyte-derived Dendritic Cells from Whole Blood07:35

Generation of Human Monocyte-derived Dendritic Cells from Whole Blood

Published on: December 24, 2016

Generation of Immature, Mature and Tolerogenic Dendritic Cells with Differing Metabolic Phenotypes06:09

Generation of Immature, Mature and Tolerogenic Dendritic Cells with Differing Metabolic Phenotypes

Published on: June 22, 2016

Related Concept Videos

Differentiation of Common Myeloid Progenitor Cells01:15

Differentiation of Common Myeloid Progenitor Cells

Common myeloid progenitors (CMPs) are oligopotent cells that can differentiate into granulocytes and macrophages. Granulocytes and macrophages are essential for protecting the body against bacterial, viral, or fungal infections. They migrate from the bone marrow into the circulating blood to reach specific tissue sites where they differentiate and help in immune surveillance. However, they survive only for a few days and must be continuously made available to the organism to maintain a robust...
T Cell Types and Functions01:24

T Cell Types and Functions

When T cells with CD4 markers are activated, they give rise to two types of effector cells: helper T cells and regulatory T cells. Meanwhile, T cells with CD8 markers differentiate into effector cytotoxic T cells. The differentiation of CD4 T cells into helper T cell subsets, such as Th1, Th2, and Th17 cells, is dependent on the antigen type, antigen-presenting cell, and regulatory cytokines.
Th1 cells stimulate dendritic cells to express necessary co-stimulatory molecules on their surfaces for...
B Cell Activation and Differentiation01:24

B Cell Activation and Differentiation

The adaptive immune response, a sophisticated defense mechanism, relies on the activation and differentiation of B lymphocytes, or B cells. These processes enable our bodies to mount a tailored response against specific pathogens such as bacteria, free virus particles, toxins, and parasites.
When naive B cells encounter a specific antigen that can bind to the B cell receptor (BCR) on their surface, they undergo sensitization to respond to the antigen's presence. Sensitization begins with...