Related Experiment Video
Updated: Jun 28, 2025

Screening Bioactive Nanoparticles in Phagocytic Immune Cells for Inhibitors of Toll-like Receptor Signaling
Published on: July 26, 2017
Control of adaptive immunity by pattern recognition receptors
Shaina L Carroll1, Chandrashekhar Pasare2, Gregory M Barton3
1Division of Immunology & Molecular Medicine, Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, CA USA.
Innate immune system signals are crucial for adaptive immunity. Pattern recognition receptors (PRRs) control dendritic cell (DC) function, shaping T cell responses and adaptive immunity.
Area of Science:
- Immunology
- Cellular immunology
- Molecular immunology
Background:
- Adaptive immunity requires signals from the innate immune system.
- Dendritic cells (DCs) act as a bridge between innate and adaptive immunity.
- Pattern recognition receptors (PRRs) are key molecular regulators of innate immunity and DC function.
Purpose of the Study:
- To review the discoveries linking innate immunity, DCs, and PRRs to adaptive immune responses.
- To explain how PRRs influence adaptive immunity via DC and lymphocyte function.
- To present a framework for understanding how PRR signaling variation impacts T cell differentiation.
Main Methods:
- Literature review and synthesis of key conceptual advances in immunology.
- Discussion of the roles of dendritic cells and pattern recognition receptors.
- Conceptual framework development for PRR-mediated immune regulation.
Main Results:
- Recognition of innate immune signals as essential for adaptive immunity induction.
- Identification of PRRs as critical mediators of innate immune activation and DC function.
- Demonstration of PRR influence on T cell differentiation and adaptive immune outcomes.
Conclusions:
- PRRs are central to shaping adaptive immunity by controlling DC and lymphocyte functions.
- Variations in PRR signaling impact T cell differentiation and adaptive immune responses.
- Understanding PRR pathways provides insights into immune system regulation and potential therapeutic targets.
Related Concept Videos
Special Features of Adaptive Immunity
The primary cell types involved in adaptive immunity are T cells and B cells. Each type has a unique role in defending the body against pathogens. T cells are responsible for cell-mediated immunity. They identify and eliminate infected cells directly,...
Cell-mediated Immune Responses
Antigens Involved in Adaptive Immunity
Complete Antigens
Complete antigens possess both immunogenicity and...
T Cell Activation and Clonal Selection
Naive T cells that have not yet encountered an antigen express two primary CD...
Diversity of Antigen Receptors
Before encountering any antigen, lymphocytes express these receptors. On B cells, the antigen receptor is a membrane-bound antibody molecule called BCR; on T cells, it is a T cell receptor or TCR. B and T cell receptors are composed of two...
B Cell Activation and Differentiation
When naive B cells encounter a specific antigen that can bind to the B cell receptor (BCR) on their surface, they undergo sensitization to respond to the antigen's presence. Sensitization begins with...

