Related Experiment Video
Updated: Oct 17, 2025
07:17
Phenotypic and Functional Analysis of Activated Regulatory T Cells Isolated from Chronic Lymphocytic Choriomeningitis Virus-infected Mice
Published on: June 22, 2016
10.0K
Regulatory T cells in COVID-19
Huan Wang1, Zhao Wang1, Wen Cao1
11Department of Neurology, Second Hospital of Hebei Medical University, Shijiazhuang, Hebei 050000, China.
Aging and Disease
|October 11, 2021
Summary
Regulatory T cells (Tregs) are reduced in COVID-19 patients, impairing immune response and increasing disease severity. Treg-targeted therapies show promise for treating this global pandemic.
Area of Science:
- Immunology
- Virology
- Infectious Diseases
Background:
- COVID-19, caused by SARS-CoV-2, disrupts the immune system, leading to inflammation and organ dysfunction.
- Regulatory T cells (Tregs) are crucial for immune suppression.
- Reduced Treg numbers in COVID-19 patients are linked to impaired inflammation control and increased respiratory failure risk.
Purpose of the Study:
- To review the role of Tregs in COVID-19 pathogenesis.
- To explore Treg-targeted therapies as potential treatments for COVID-19.
- To offer new perspectives on immunotherapeutic strategies for COVID-19.
Main Methods:
- Literature review of recent studies on Tregs and COVID-19.
- Analysis of the impact of Treg reduction on immune responses in COVID-19 patients.
- Synthesis of findings to propose therapeutic avenues.
Main Results:
- COVID-19 is associated with a significant decrease in Treg cell counts.
- This reduction contributes to weakened immunosuppression, Treg/Th17 imbalance, and heightened risk of respiratory failure.
- Treg dysfunction exacerbates COVID-19-related inflammation and immune dysregulation.
Conclusions:
- Tregs play a critical role in modulating immune responses during SARS-CoV-2 infection.
- Targeting Tregs may offer a novel therapeutic strategy to mitigate COVID-19 severity and progression.
- Further research into Treg-based immunotherapies is warranted for this global health crisis.
Related Concept Videos
01:24T Cell Types and Functions
1.5K
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...
1.5K
01:29Immune Response Against Viral Pathogens
1.1K
The immune system's response to viral infections is a complex and coordinated process involving natural killer (NK) cells, T cell-mediated responses, and antibody-mediated responses.
NK Cells
NK cells are a crucial part of our innate immune system, acting as the first line of defense against viral infections. These cells can recognize and kill infected cells without prior exposure to the virus, effectively slowing down the spread of infection. Additionally, NK cells produce proinflammatory...
NK Cells
NK cells are a crucial part of our innate immune system, acting as the first line of defense against viral infections. These cells can recognize and kill infected cells without prior exposure to the virus, effectively slowing down the spread of infection. Additionally, NK cells produce proinflammatory...
1.1K
01:27Cytotoxic T Cells-mediated Immune Response
4.7K
Cytotoxic T cells are a vital component of the immune system. They have the remarkable ability to identify and target antigens on infected or abnormal cells. These antigens often originate from intracellular pathogens such as viruses or abnormal proteins cancer cells produce.
Immunological surveillance is the ability of immune cells to monitor and eliminate infected cells with intracellular pathogens, neoplastically transformed cells, and cells with non-self antigens. Cytotoxic T cells and NK...
Immunological surveillance is the ability of immune cells to monitor and eliminate infected cells with intracellular pathogens, neoplastically transformed cells, and cells with non-self antigens. Cytotoxic T cells and NK...
4.7K
01:22T Cell Activation and Clonal Selection
9.8K
T cells are integral to our adaptive immune system, recognizing and effectively responding to foreign antigens. T cell activation and clonal selection are pivotal in orchestrating this immune response. This article elucidates these mechanisms, detailing the roles of cluster of differentiation (CD) markers, major histocompatibility complex (MHC) molecules, costimulatory signals, and the process of clonal selection.
Naive T cells that have not yet encountered an antigen express two primary CD...
Naive T cells that have not yet encountered an antigen express two primary CD...
9.8K