Experimental dissection of tuberculosis protective immunity: a human perspective

Area of Science:

• Infectious Diseases
• Immunology
• Biomedical Research

Background:

• Tuberculosis (TB), caused by Mycobacterium tuberculosis (Mtb), is a leading infectious cause of death globally.
• A critical knowledge gap in protective immunity hinders the development of new TB vaccines and host-directed therapies.
• Studying human TB is challenging due to invasive specimen collection, necessitating relevant surrogate models.

Purpose of the Study:

• To review current TB models used in research.
• To discuss the applicability of these models in deciphering human protective immunity against TB.
• To evaluate their utility in assessing vaccine candidates and host-directed therapeutic strategies.

Main Methods:

• Review of existing literature on TB research models.
• Analysis of in vivo, in vitro, and in silico systems for TB pathogenesis.
• Discussion of advanced models including genetically diverse mice, 3D organoid cultures, and computational modeling.

Main Results:

• Traditional models are limited; advanced systems offer new avenues for TB research.
• Genetically diverse mice, organoids, and computational models show promise for studying TB.
• These models can aid in understanding disease progression, transmission, and evaluating interventions.

Conclusions:

• Improved TB models are essential for advancing the WHO's End TB Strategy.
• Novel modeling systems are crucial for deciphering protective immunity and developing effective vaccines and treatments.
• Further research utilizing these advanced models will accelerate progress against TB.