Related Experiment Video
Updated: Apr 14, 2026

An Automated Culture System for Use in Preclinical Testing of Host-Directed Therapies for Tuberculosis
Published on: August 16, 2021
CD8 T cells and Mycobacterium tuberculosis infection
Philana Ling Lin1, JoAnne L Flynn
1Department of Pediatrics, Division of Infectious Disease, Children's Hospital of Pittsburgh of the University of Pittsburgh Medical Center, Pittsburgh, PA, 15224, USA.
CD8 T cells play a crucial role in controlling tuberculosis (TB) by responding to Mycobacterium tuberculosis infection. Research explores their diverse functions and types in combating this respiratory disease.
Area of Science:
- Immunology
- Infectious Diseases
- Respiratory Medicine
Background:
- Tuberculosis (TB) is a respiratory disease caused by Mycobacterium tuberculosis.
- Mycobacterium tuberculosis persists in macrophages within granulomas.
- CD4 T cells are vital for TB control, but the role of CD8 T cells remains unclear in humans.
Purpose of the Study:
- To discuss the potential roles of CD8 T cells in defense against tuberculosis.
- To review current understanding of CD8 T cell types in Mycobacterium tuberculosis infection.
Main Methods:
- Review of existing evidence on CD8 T cell involvement in tuberculosis.
- Analysis of human CD8 T cell responses to Mycobacterium tuberculosis.
Main Results:
- Animal models suggest a non-redundant role for CD8 T cells in controlling Mycobacterium tuberculosis.
- Human infections generate specific CD8 T cell responses, including classical and non-classical types.
Conclusions:
- CD8 T cells are implicated in the immune defense against tuberculosis.
- Further research is needed to fully elucidate the diverse roles of CD8 T cells in TB pathogenesis and control.
Related Concept Videos
Pulmonary Tuberculosis II
Here is a detailed explanation of its pathophysiology:
Transmission: The process begins when a person inhales droplet nuclei containing M. tuberculosis. These are typically released into the air when an individual with pulmonary or...
Pulmonary Tuberculosis I
Causative Organism
The primary infectious agent causing tuberculosis is Mycobacterium tuberculosis, a slow-growing, acid-fast, aerobic rod that exhibits sensitivity to heat and ultraviolet light. Instances of Mycobacterium bovis and Mycobacterium avium contributing to the development of TB infection are rare.
Mode of...
Pulmonary Tuberculosis IV
Several diagnostic approaches are used to detect TB. The conventional method is the Tuberculin Skin Test (TST), also known as the Mantoux test. However, this method has...
Pulmonary Tuberculosis V
Latent tuberculosis infection occurs when TB bacteria are present in a person's body, but are not causing illness or symptoms. It is not contagious, and preventive treatment is crucial to avoid the...
Pulmonary Tuberculosis III
The first classification is based on the development of the disease, and it includes the following categories:
Defense Against Bacterial Pathogens
Phagocytes
Phagocytes are the frontline soldiers of the immune system. They include neutrophils and macrophages. Neutrophils are the most abundant type of white blood cell and are quickly mobilized to the site of infection. Macrophages are larger cells that patrol...

