How Mycobacterium tuberculosis Subverts Innate and Adaptive Immunity and Their Crosstalk: Implications for Vaccine...

Area of Science:

• Immunology
• Microbiology
• Vaccinology

Background:

• Mycobacterium tuberculosis (Mtb) is a leading infectious cause of death globally.
• The existing Bacillus Calmette-Guérin (BCG) vaccine offers inconsistent protection against tuberculosis (TB).
• Mtb employs sophisticated immune evasion tactics, hindering vaccine development.

Purpose of the Study:

• To review immune mechanisms against Mtb.
• To examine challenges in TB vaccine design due to Mtb's immune subversion and host-pathogen variability.
• To highlight emerging strategies for developing effective TB vaccines.

Main Methods:

• Literature review of innate and adaptive immunity against Mtb.
• Analysis of Mtb's immune evasion strategies.
• Examination of host-pathogen interactions and heterogeneity.

Main Results:

• Mtb actively undermines host defenses and reprograms host cells.
• Immune evasion and host-pathogen diversity complicate vaccine development.
• Traditional T cell-focused approaches have been insufficient.

Conclusions:

• Developing effective TB vaccines requires overcoming Mtb's complex immune evasion.
• Understanding immune correlates of protection is crucial.
• Novel vaccine strategies addressing bacterial and host factors are needed.