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Updated: Oct 27, 2025
Characterization of Human Monocyte-derived Dendritic Cells by Imaging Flow Cytometry: A Comparison between Two Monocyte Isolation Protocols
Published on: October 18, 2016
Single-Cell Analysis Reveals the Heterogeneity of Monocyte-Derived and Peripheral Type-2 Conventional Dendritic Cells
Yuehan Gao1, He Li1, Zhaohuai Li1
1State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangzhou, China.
Insights
This study reveals seven subtypes of human monocyte-derived dendritic cells (moDCs), including novel CLEC10A+CD127+ cells. It also defines subtypes within peripheral conventional DCs (cDC2s) and identifies key maturation markers for moDCs.
Area of Science:
- Immunology
- Cell Biology
- Transcriptomics
Background:
- Dendritic cells (DCs) are crucial for immune responses, pathogen recognition, and antigen presentation.
- Human monocyte-derived DCs (moDCs) are widely used in research and immunotherapy, but their heterogeneity and relationship with peripheral DCs are not fully understood.
Purpose of the Study:
- To investigate the heterogeneity and interrelationships of human monocyte-derived DCs (moDCs) and peripheral blood DCs.
- To characterize distinct subtypes within moDCs and conventional DCs (cDC2s) using single-cell RNA sequencing.
- To identify transcriptomic differences and potential differentiation pathways between moDCs and cDC2s, and to discover maturation markers for moDCs.
Main Methods:
- Single-cell RNA sequencing (scRNA-seq) was performed on human moDCs and peripheral blood DCs.
- Bioinformatic analyses were used to identify cell subtypes, differentiation trajectories, and transcriptomic profiles.
- Transcriptomic changes during moDC maturation were analyzed to identify key markers.
Main Results:
- Seven distinct subtypes of human moDCs were identified, with five aligning with type 2 conventional DCs (cDC2s) and two novel CLEC10A+CD127+ subtypes.
- Five subtypes were also defined within human cDC2s, revealing potential differentiation pathways and transcriptomic distinctions from moDCs.
- SLAMF7 and IL15RA were identified as maturation markers, while CLEC10A and SIGLEC10 were identified as markers for immature DCs.
Conclusions:
- This study provides a comprehensive transcriptomic landscape of human moDCs and cDC2s, uncovering significant heterogeneity.
- Novel moDC subtypes were discovered, expanding our understanding of DC populations.
- The identified maturation and immature DC markers will facilitate more precise functional and developmental analyses of human cDC2s and moDCs.
Abstract:
Dendritic cells (DCs) are critical for pathogen recognition and Ag processing/presentation. Human monocyte-derived DCs (moDCs) have been extensively used in experimental studies and DC-based immunotherapy approaches. However, the extent of human moDC and peripheral DCs heterogeneity and their interrelationship remain elusive. In this study, we performed single-cell RNA sequencing of human moDCs and blood DCs. We identified seven subtypes within moDCs: five corresponded to type 2 conventional DCs (cDC2s), and the other two were CLEC10A+CD127+ cells with no resemblance to any peripheral DC subpopulations characterized to date. Moreover, we defined five similar subtypes in human cDC2s, revealed the potential differentiation trajectory among them, and unveiled the transcriptomic differences between moDCs and cDC2s. We further studied the transcriptomic changes of each moDC subtype during maturation, demonstrating SLAMF7 and IL15RA as maturation markers and CLEC10A and SIGLEC10 as markers for immature DCs. These findings will enable more accurate functional/developmental analyses of human cDC2s and moDCs.
