Related Experiment Video
Updated: Aug 8, 2026

Generation of Induced Regulatory T Cells from Primary Human Naïve and Memory T Cells
Published on: April 16, 2012
Immune regulatory loops determine productive interactions within human T lymphocyte-dendritic cell clusters
G Stuhler1, A Zobywalski, F Grünebach
1University of Tübingen, Medical Clinic II, Otfried-Müller Strasse 10, 72076 Tübingen, Germany.
Dendritic cells (DC) use CD40 signaling to help activate cytolytic T lymphocytes. CD27L/CD70 on T cells regulates CD40L on helper T cells, initiating immune responses through coordinated cell activation.
Area of Science:
- Immunology
- Cellular immunology
- T cell activation
Background:
- Dendritic cells (DC) are crucial for initiating T cell-mediated immunity.
- CD40 signaling is essential for DC maturation and function.
- Cytolytic T lymphocytes play a key role in adaptive immunity.
Purpose of the Study:
- To elucidate the role of CD27L/CD70 in T cell-DC interactions.
- To understand the regulatory mechanisms controlling cytolytic T lymphocyte induction.
- To investigate the signaling pathways involved in T lymphocyte-dendritic cell cluster formation.
Main Methods:
- Immunohistochemistry to detect protein expression.
- Flow cytometry for cell surface marker analysis.
- Co-culture assays to study T cell-DC interactions.
Main Results:
- CD27L/CD70 is expressed by cytolytic T lymphocytes upon interaction with DCs.
- CD27L/CD70 signaling up-regulates CD154 (CD40L) on CD45RA+ helper T cells.
- This interaction promotes subsequent DC stimulation and immune response initiation.
Conclusions:
- The CD27L/CD70-CD40L axis is critical for initiating cytolytic T lymphocyte responses.
- Immune response initiation requires coordinated activation and differentiation of T cells and DCs.
- Regulatory circuits involving T cell-DC interactions govern adaptive immunity.
More Related Videos
07:17Phenotypic and Functional Analysis of Activated Regulatory T Cells Isolated from Chronic Lymphocytic Choriomeningitis Virus-infected Mice
Published on: June 22, 2016
11:34A Simple and Efficient Method for Testing Immunomodulatory Agents for Generation of Tolerogenic Dendritic Cells from Human CD14+ Monocytes
Published on: April 11, 2025
Related Concept Videos
Inflammatory Response
Inflammation can be triggered by various stimuli, such as impact, abrasion, chemical irritation, infections, and extreme hot or cold temperatures. These can damage cells and connective tissue fibers,...
Cells of the Adaptive Immune Response
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...
T Cell Activation and Clonal Selection
Naive T cells that have not yet encountered an antigen express two primary CD...
T Cell Types and Functions
Th1 cells stimulate dendritic cells to express necessary co-stimulatory molecules on their surfaces for...
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...