• Peptide microarray-based identification of dormancy-associated Mycobacterium tuberculosis antigens inducing immune responses among latent tuberculosis infection individuals in Thailand

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Metadata

Document Title

Peptide microarray-based identification of dormancy-associated Mycobacterium tuberculosis antigens inducing immune responses among latent tuberculosis infection individuals in Thailand

Author

Hanthamrongwit J., Aruvornlop P., Saelee C., Wanta N., Poneksawat P., Soe P.T., Kyaw S.P., Khaenam P., Warit S., Valentini D., Mahasirimongkol S., Dhepakson P., Soonthornchartrawat S., Chootong P., Leepiyasakulchai C.

Affiliations

Department of Clinical Microbiology and Applied Technology, Faculty of Medical Technology, Mahidol University, Bangkok, 10700, Thailand; Center of Research and Innovation, Faculty of Medical Technology, Mahidol University, Bangkok, 10700, Thailand; Department of Medical Laboratory Technology, University of Medical Technology, Mandalay, 05071, Myanmar; Clinical Pathology Laboratory, (1000) Bedded General Hospital, Nay Pyi Taw, 15011, Myanmar; Center of Standardization and Product Validation, Faculty of Medical Technology, Mahidol University, Bangkok, 10700, Thailand; Industrial Tuberculosis Team, Industrial Medical Molecular Biotechnology Research Group, BIOTEC, National Science and Technology Development Agency, Thailand Science Park, Pathum Thani, 12120, Thailand; Department of Laboratory Medicine, Karolinska Institutet, Stockholm, Sweden; Department of Cellular Therapy and Allogeneic Stem Cell Transplantation (CAST), Karolinska University Hospital, Stockholm, Sweden; Medical Life Sciences Institute, Department of Medical Sciences, Ministry of Public Health, Nonthaburi, Thailand

Type

Article

Source Title

Scientific Reports

ISSN

20452322

Year

2023

Volume

13

Issue

1

Page

-

Open Access

All Open Access, Gold

Publisher

Nature Research

DOI

10.1038/s41598-023-34307-4

Format

PDF

Abstract

Multi-stage tuberculosis (TB) vaccines composed of active- and dormancy-associated antigens are promising to trigger the immune protection against all TB stages. However, scientists are still in quest of the suitable vaccine candidates. In this study, we identified the potential targets for this vaccine in a high TB burden country, Thailand. Peptide microarray was applied to gauge IgA and IgG antibodies specific to 16,730 linear epitopes of 52 dormancy-associated Mycobacterium tuberculosis (M. tb) proteins in three study groups: active tuberculosis (ATB), latent tuberculosis infection (LTBI) and endemic healthy control (EHC). Preferential IgA recognition against epitopes of dormancy-associated proteins was identified in LTBI group. Validation of these findings revealed that LTBI subjects exhibited the greater levels of Rv2659c- and Rv1738-specific IgA than those of household contacts, but less than did ATB subjects. Frequencies of IFNγ-producing CD4+ and CD8+ T cells induced by proteins Rv2659c and Rv1738 were higher in LTBI than ATB individuals. The results indicated that LTBI group in a high TB burden country demonstrated cell-mediated immune response to proteins Rv2659c and Rv1738 stronger than those of ATB. These immune responses likely contribute to natural protection against dormant M. tb and might be potential targets for a multi-stage TB vaccine. © 2023, The Author(s).

Publication Source

WOS

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