Analyzing the Mycobacterium tuberculosis immune response by T-cell receptor clustering with GLIPH2 and genome-wide antigen screening

Journal: Nature Biotechnology

Published: 2020-04-27

DOI: 10.1038/s41587-020-0505-4

Affiliations: 6

Authors: 5

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Research Highlight

Immune repertoire revealed

© STEVE GSCHMEISSNER & KEITH CHAMBERS/SCIENCE PHOTO LIBRARY/Getty

© STEVE GSCHMEISSNER & KEITH CHAMBERS/SCIENCE PHOTO LIBRARY/Getty

A new way of characterizing a person’s immune repertoire after tuberculosis infection could lead to better vaccine designs.

Vaccine development for diseases such as tuberculosis, HIV, malaria and cancers has been hampered by the sheer complexity of T-cell functions and the huge number of antigen specificities.

Now, a team that included an infectious disease expert from the University of Cape Town has developed a computational method for analysing the receptors on the surfaces of T cells that help recognize parts of pathogen invaders. Known as GLIPH2, the freely available tool predicts the specificity of novel T-cell receptors (TCRs) based on genetic sequence similarity with known ones.

When the researchers applied their predictive algorithm to TCR sequence data from 58 individuals latently infected with the bacterium that causes tuberculosis, the tool sorted more than 19,000 unique sequences into TCR groups according to antigen specificity.

The team identified novel tuberculosis-specific TCRs that could inform future vaccine development. Others have since used GLIPH2 to probe human immune responses to other infectious threats, including the coronavirus responsible for COVID-19.

Supported content

  1. Nature Biotechnology 38, 1194–1202 (2020). doi: 10.1038/s41587-020-0505-4
Institutions Share
Stanford Institute for Immunity, Transplantation and Infection (ITI), United States of America (USA) 0.67
UCT South African Tuberculosis Vaccine Initiative (SATVI), South Africa 0.07
UCT Institute of Infectious Diseases and Molecular Medicine (IDM), South Africa 0.07
UCT Division of Immunology, South Africa 0.07
Stanford Department of Microbiology and Immunology, United States of America (USA) 0.07
Stanford School of Medicine, United States of America (USA) 0.07

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