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The immune system is a complex network of cells and molecules that protects the body from foreign invaders. T cells, a type of white blood cell, play a crucial role in this process. They recognize and attack foreign substances, such as pathogens, that enter the body.
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Immune surveillance is an integral part of the innate immune system, involving the continuous monitoring of peripheral tissues to detect and respond to pathogens, infected cells, or cancerous cells. This surveillance is conducted primarily by natural killer (NK) cells and phagocytes, which employ distinct but complementary mechanisms to identify and eliminate threats.
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Related Experiment Video

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Characterization of Human Monocyte-derived Dendritic Cells by Imaging Flow Cytometry: A Comparison between Two Monocyte Isolation Protocols
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Dendritic cells and monocyte-derived cells: Two complementary and integrated functional systems.

Andreas Schlitzer1, Naomi McGovern1, Florent Ginhoux1

  • 1Singapore Immunology Network (SIgN), Agency for Science, Technology and Research (A*STAR), 138648 Singapore, Singapore.

Seminars in Cell & Developmental Biology
|May 11, 2015
PubMed
Summary
This summary is machine-generated.

Dendritic cells (DC) and monocyte-derived cells (MC) form integrated systems. These cells, with distinct subpopulations, are crucial for linking innate and adaptive immunity and determining immune responses.

Keywords:
Dendritic cellHumanMonocyteMonocyte-derived cellMousecDC1cDC2

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Area of Science:

  • Immunology
  • Cell Biology

Background:

  • Dendritic cells (DC) are key antigen-presenting cells bridging innate and adaptive immunity.
  • Existing DC subpopulations have unique functions, integrating environmental signals to dictate immune outcomes.
  • Inflammatory monocyte-derived cells were previously thought to be a DC subtype.

Purpose of the Study:

  • To review the current understanding of DC and monocyte-derived cell (MC) networks in mice and humans.
  • To explore the functional specializations of subpopulations within these cellular networks.
  • To elucidate the complementary and integrated roles of DC and MC in immune regulation.

Main Methods:

  • Review of recent scientific literature on dendritic cells and monocyte-derived cells.
  • Comparative analysis of cellular networks and subpopulations in mouse and human models.
  • Synthesis of functional data to understand cell interactions and immune system integration.

Main Results:

  • Monocyte-derived cells (MC) are distinct, highly plastic cells, not a bona fide DC subtype.
  • MC possess diverse functional capabilities, some overlapping with those of dendritic cells (DC).
  • DC and MC networks are organized with specialized subpopulations in both mouse and human systems.

Conclusions:

  • Dendritic cells (DC) and monocyte-derived cells (MC) constitute two complementary and integrated functional systems.
  • Understanding the organization and function of these networks is crucial for deciphering immune regulation.
  • These cellular systems play a vital role in determining immunity versus tolerance.