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Updated: Jul 28, 2025

An Efficient and High Yield Method for Isolation of Mouse Dendritic Cell Subsets
Published on: April 18, 2016
Plasmacytoid dendritic cells: A dendritic cell in disguise
Rebeca Arroyo Hornero1, Juliana Idoyaga1
1Microbiology & Immunology Department, and Immunology Program, Stanford University School of Medicine, Stanford, CA 94305, USA.
Plasmacytoid dendritic cells (pDCs) possess unique dual origins and functions, including rapid type I interferon secretion. Their distinct characteristics challenge simple lymphoid or myeloid classification, supporting their unique role in immunity.
Area of Science:
- Immunology
- Cell Biology
Background:
- Plasmacytoid dendritic cells (pDCs) classification is debated.
- pDCs exhibit unique features distinct from other dendritic cells (DCs).
Purpose of the Study:
- To review the historical and current understanding of pDCs.
- To argue against oversimplified lymphoid or myeloid classification of pDCs.
- To propose the inclusion of pDCs within the DC network based on their immune-linking functions.
Main Methods:
- Literature review and synthesis of existing research on pDCs.
- Analysis of pDC ontogeny, function, and immune response activation.
Main Results:
- pDCs may originate from both myeloid and lymphoid progenitors, unlike conventional DCs (cDCs).
- pDCs rapidly secrete large amounts of type I interferon (IFN-I) upon viral infection.
- pDCs activate T cells independently of contaminating cells after pathogen recognition.
Conclusions:
- Classifying pDCs strictly as lymphoid or myeloid is an oversimplification.
- pDCs' ability to bridge innate and adaptive immunity justifies their inclusion in the DC network.
- pDCs play a crucial role in sensing pathogens and initiating adaptive immune responses.
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