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The dendritic cell system and its role in immunogenicity.
1Laboratory of Cellular Physiology and Immunology, Rockefeller University, New York, New York 10021.
Annual Review of Immunology
|January 1, 1991
Summary
Dendritic cells are key antigen-presenting cells initiating immune responses. These cells migrate to lymphoid organs, process antigens, and activate T cells, playing a crucial role in immunogenicity.
Area of Science:
- Immunology
- Cell Biology
Background:
- Dendritic cells (DCs) are crucial antigen-presenting cells (APCs) initiating diverse immune responses.
- They reside in nonlymphoid tissues and migrate to lymphoid organs to interact with T cells.
Purpose of the Study:
- To elucidate the multifaceted functions of dendritic cells in immune responses.
- To understand their role in antigen acquisition, migration, and T cell activation.
Main Methods:
- In vitro studies analyzing antigen processing kinetics.
- Assessment of dendritic cell migration and T cell clustering capabilities.
Main Results:
- Dendritic cells efficiently process proteins for short periods, correlating with MHC synthesis and endocytic vesicle content.
- Antigen processing capacity diminishes in culture, but T cell stimulation remains robust.
- Dendritic cells exhibit motility and efficiently cluster and activate antigen-specific T cells.
Conclusions:
- Dendritic cells are specialized for antigen acquisition, migration, and T cell activation, mediating key aspects of immunogenicity.
- Their role in immunologic tolerance is an emerging area of research.