Related Experiment Video
Updated: Jun 21, 2026
14:01
Human In Vitro Suppression as Screening Tool for the Recognition of an Early State of Immune Imbalance
Published on: July 22, 2011
14.5K
Single cell suppression profiling of human regulatory T cells
Jonas Nørskov Søndergaard1, Janyerkye Tulyeu2, David Priest3
1Human Immunology Team, Center for Infectious Disease Education and Research (CiDER), Osaka University, Suita, Japan. jonas@cider.osaka-u.ac.jp.
Nature Communications
|February 3, 2025
Summary
Regulatory T cells (Tregs) suppress immune responses. A new method, scSPOT, analyzes Treg function in whole blood, revealing their impact on CD8 T cells and potential drug targets.
Area of Science:
- Immunology
- Cell Biology
Background:
- Regulatory T cells (Tregs) are crucial for immune homeostasis.
- Traditional methods for assessing Treg function lack physiological relevance.
- A need exists for advanced techniques to study Treg suppressive activity in complex systems.
Purpose of the Study:
- To develop and validate a novel method, single cell suppression profiling of human Tregs (scSPOT), for assessing Treg function.
- To analyze the suppressive effects of Tregs on various immune cells within a whole peripheral blood mononuclear cell (PBMC) system.
- To investigate the mechanisms of Treg-mediated suppression and identify potential therapeutic targets.
Main Methods:
- Development of scSPOT utilizing a 52-marker CyTOF panel and a cell division detection algorithm.
- Application of scSPOT in a whole PBMC system to simultaneously assess Treg interactions with all other cell types.
- Head-to-head comparison of Treg suppressive effects on different immune cell populations.
Main Results:
- Tregs exhibit significant suppressive effects on effector memory CD8 T cells.
- Mechanisms of suppression include partial division arrest, cell cycle inhibition, and effector molecule downregulation.
- scSPOT identified a Treg phenotypic split relevant to viral infections and proposed mechanisms for Ipilimumab and Tazemetostat.
Conclusions:
- scSPOT is a scalable, robust, and widely applicable method for studying Treg immunobiology.
- The scSPOT platform can be used to better understand Treg function in health and disease.
- scSPOT offers a valuable tool for screening therapeutic compounds targeting Treg-mediated immune responses.
Related Concept Videos
02:16Transcription Factors
Tissue-specific transcription factors contribute to diverse cellular functions in mammals. For example, the gene for beta globin, a major component of hemoglobin, is present in all cells of the body. However, it is only expressed in red blood cells because the transcription factors that can bind to the promoter sequences of the beta globin gene are only expressed in these cells. Tissue-specific transcription factors also ensure that mutations in these factors may impair only the function of...
01:52Eukaryotic Transcription Inhibitors
Certain biochemical processes, such as embryonic development and cell growth regulation, depend on the repression of specific genes. DNA binding proteins known as eukaryotic transcription inhibitors regulate the repression of gene expression in eukaryotes. The presence of these inhibitors at the required location and time in the cell is triggered by the presence of hormones and additional signals from other cells.
Eukaryotic transcription inhibitors usually contain two distinct domains, a DNA...
Eukaryotic transcription inhibitors usually contain two distinct domains, a DNA...
02:15Replicative Cell Senescence
Replicative cell senescence is a property of cells that allows them to divide a finite number of times throughout the organism's lifespan while preventing excessive proliferation. Replicative senescence is associated with the gradual loss of the telomere — short, repetitive DNA sequences found at the end of the chromosomes. Telomeres are bound by a group of proteins to form a protective cap on the ends of chromosomes. Embryonic stem cells express telomerase — an enzyme that adds the telomeric...
01:01Regulation of Hematopoietic Stem Cells
All blood and immune cells are produced from the multipotent hematopoietic stem cells (HSCs) by the process of hematopoiesis. However, they all have a limited life span. In addition, many are depleted in immune surveillance or combatting an injury or infection. This makes blood one of the most regenerative tissues. Hematopoiesis helps replenish these blood and immune cells, restoring the body's normal functioning. However, overproduction of blood and immune cells can make them cancerous or...
01:30General Transcription Factors
Tissue-specific transcription factors contribute to diverse cellular functions in mammals. For example, the gene for beta globin, a major component of hemoglobin, is present in all cells of the body. However, it is only expressed in red blood cells because the transcription factors that can bind to the promoter sequences of the beta globin gene are only expressed in these cells. Tissue-specific transcription factors also ensure that mutations in these factors may impair only the function of...
01:24T Cell Types and Functions
When T cells with CD4 markers are activated, they give rise to two types of effector cells: helper T cells and regulatory T cells. Meanwhile, T cells with CD8 markers differentiate into effector cytotoxic T cells. The differentiation of CD4 T cells into helper T cell subsets, such as Th1, Th2, and Th17 cells, is dependent on the antigen type, antigen-presenting cell, and regulatory cytokines.
Th1 cells stimulate dendritic cells to express necessary co-stimulatory molecules on their surfaces for...
Th1 cells stimulate dendritic cells to express necessary co-stimulatory molecules on their surfaces for...