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Target intelligence / Profile preview
Plasmacytoid Dendritic Cells (pDCs)
- Target
- pDCs
- Molecular classification
- Immune cells, Dendritic cells
01
Overview
Plasmacytoid dendritic cells (pDCs) are a specialized subset of dendritic cells with a unique ability to produce large amounts of type I interferons (IFN-I), especially in response to viral infections. They act as key sentinels in the innate immune system, bridging innate and adaptive immunity through cytokine production and antigen presentation. pDC dysregulation is implicated in autoimmune diseases and cancer. Therapeutic modulation strategies include targeting TLR/MyD88 axis or IDO to reduce unwanted tolerance/immunosuppression. The transcription factor Spi-B is critical for pDC development/function.
- Other names
- Type I interferon-producing cells
02
Mechanism of action
N/A
03
Biological functions
Type I interferon productionAntigen presentationCytokine secretionImmune regulationActivation of innate and adaptive immunity
04
Disease associations
Viral infectionAutoimmune diseases (e.g., SLE, RA)Cancer (immunosuppression in tumor microenvironment)
05
Safety considerations
Excessive IFN-I production leading to autoimmunitySuppression of anti-tumor immunityCytokine stormOff-target effects of TLR modulators
06
Interacting drugs
TLR7/TLR9 agonists/antagonists
2 more in the full profile.
07
Biomarkers
IFN-I levelspDC frequency in blood/tissuesExpression of TLR7/TLR9Expression of activation markers (e.g., CD86, MHC-II)
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