Immune Response to Mycobacterium tuberculosis: A Narrative Review

Area of Science:

• Immunology
• Microbiology
• Infectious Diseases

Background:

• Mycobacterium tuberculosis (Mtb) infection elicits a complex host immune response.
• Outcomes range from latent infection and disease to pathogen clearance.
• Macrophages and CD4+ T cells are key, but all immune components are involved.

Purpose of the Study:

• To provide an overview of immune cell roles in Mtb response.
• To highlight key literature and studies on tuberculosis immunity.
• To clarify the complex and dynamic interactions between Mtb and the host immune system.

Main Methods:

• Narrative mini-review of existing literature.
• Analysis of host and pathogen determinants in tuberculosis susceptibility.
• Synthesis of information on cellular immune responses to Mtb.

Main Results:

• The immune response to Mtb is multifaceted, involving numerous cell types.
• Mtb employs sophisticated immune evasion strategies.
• The balance of immune response dictates disease progression or host damage.

Conclusions:

• Each immune cell type plays a role, though their exact functions are debated.
• Host-pathogen interactions determine tuberculosis susceptibility.
• A comprehensive understanding requires considering all immune mechanisms and determinants.