Related Experiment Video
Updated: Mar 26, 2026
09:09
An Efficient and High Yield Method for Isolation of Mouse Dendritic Cell Subsets
Published on: April 18, 2016
16.0K
A CD2 high-expressing stress-resistant human plasmacytoid dendritic-cell subset
Christian Bryant1,2,3, Phillip D Fromm1,2, Fiona Kupresanin1
1Dendritic Cell Research, ANZAC Research Institute, Concord Repatriation General Hospital, Sydney, NSW, Australia.
Immunology and Cell Biology
|January 22, 2016
Summary
Human plasmacytoid dendritic cells (pDCs) are not homogeneous. Two distinct subsets, CD2(hi) and CD2(lo), show differential survival, especially under glucocorticoid (GC) stress, revealing a new mechanism for controlling innate immunity.
Area of Science:
- Immunology
- Cell Biology
Background:
- Human plasmacytoid dendritic cells (pDCs) were traditionally viewed as uniform.
- Recent findings suggest heterogeneity within pDC populations.
- pDCs are crucial for antiviral immunity and cancer progression.
Purpose of the Study:
- To investigate potential subsets within human pDCs.
- To characterize functional differences between these subsets.
Main Methods:
- Unbiased cell phenotype clustering of human pDCs from blood and bone marrow.
- Functional assays to assess pDC characteristics.
- Analysis of pDC subset response to stress and glucocorticoids (GCs).
Main Results:
- Two distinct human pDC subsets identified: CD2(hi) and CD2(lo).
- Both subsets exhibit pDC functions, including interferon-alpha production.
- CD2(hi) pDCs show enhanced survival under stress and GCs due to higher BCL2 expression.
- In vivo, GC treatment of multiple myeloma patients revealed a relative increase in CD2(hi) pDCs.
Conclusions:
- Human pDCs comprise functionally distinct subsets (CD2(hi) and CD2(lo)).
- Differential sensitivity to GCs, with CD2(lo) pDCs undergoing selective apoptosis, is a novel mechanism for innate response regulation.
- This subset-specific apoptosis impacts immune control during stress and disease.
