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Sci Transl Med. 2020 Jan 29;12(528). pii: eaay0233. doi: 10.1126/scitranslmed.aay0233.

Immune correlates of tuberculosis disease and risk translate across species.

Author information

1
Department of Molecular Microbiology, Washington University in St. Louis, St. Louis, MO 63110, USA.
2
McDonnell Genome Institute, Washington University in St. Louis, St. Louis, MO 63110, USA.
3
Department of Medicine, Division of Allergy, Immunology and Rheumatology, University of Rochester Medical Center, Rochester, NY 14624, USA.
4
Department of Microbiology, Tulane National Primate Research Center, Tulane University, Covington, LA 70433, USA.
5
South African Tuberculosis Vaccine Initiative, Institute of Infectious Disease and Molecular Medicine and Division of Immunology, Department of Pathology, University of Cape Town, Cape Town, South Africa.
6
Department of Medicine, Division of Infectious Diseases, Washington University in St. Louis, St. Louis, MO 63110, USA.
7
Department of Pathology and Immunology, Washington University in St. Louis, St. Louis, MO 63110, USA.
8
Autoimmunity Cluster, Immunology & Inflammation Therapeutic Area, Sanofi, Cambridge, MA 02139, USA.
9
Southwest National Primate Research Center, Texas Biomedical Research Institute, San Antonio, TX 78245, USA.
10
McDonnell Genome Institute, Washington University in St. Louis, St. Louis, MO 63110, USA. sakhader@wustl.edu mmitreva@wustl.edu.
11
Department of Molecular Microbiology, Washington University in St. Louis, St. Louis, MO 63110, USA. sakhader@wustl.edu mmitreva@wustl.edu.

Abstract

One quarter of the world's population is infected with Mycobacterium tuberculosis (Mtb), the causative agent of tuberculosis (TB). Although most infected individuals successfully control or clear the infection, some individuals will progress to TB disease. Immune correlates identified using animal models are not always effectively translated to human TB, thus resulting in a slow pace of translational discoveries from animal models to human TB for many platforms including vaccines, therapeutics, biomarkers, and diagnostic discovery. Therefore, it is critical to improve our poor understanding of immune correlates of disease and protection that are shared across animal TB models and human TB. In this study, we have provided an in-depth identification of the conserved and diversified gene/immune pathways in TB models of nonhuman primate and diversity outbred mouse and human TB. Our results show that prominent differentially expressed genes/pathways induced during TB disease progression are conserved in genetically diverse mice, macaques, and humans. In addition, using gene-deficient inbred mouse models, we have addressed the functional role of individual genes comprising the gene signature of disease progression seen in humans with Mtb infection. We show that genes representing specific immune pathways can be protective, detrimental, or redundant in controlling Mtb infection and translate into identifying immune pathways that mediate TB immunopathology in humans. Together, our cross-species findings provide insights into modeling TB disease and the immunological basis of TB disease progression.

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