PMID- 34284090 OWN - NLM STAT- MEDLINE DCOM- 20210928 LR - 20210928 IS - 1878-3511 (Electronic) IS - 1201-9712 (Linking) VI - 110 DP - 2021 Sep TI - Circulating IgA/IgG memory B cells against Mycobacterium tuberculosis dormancy-associated antigens Rv2659c and Rv3128c in active and latent tuberculosis. PG - 75-82 LID - S1201-9712(21)00589-0 [pii] LID - 10.1016/j.ijid.2021.07.033 [doi] AB - OBJECTIVE: To elucidate the antigenic potential of dormancy-associated antigens Rv2659c and Rv3128c of Mycobacterium tuberculosis by examining the persistence of specific IgG and IgA memory B cells (MBCs) among patients with active tuberculosis (TB), household contacts with latent tuberculosis (LTBI), and an endemic healthy control group. METHODS: Fresh peripheral blood mononuclear cells from the three study groups were used to enumerate the numbers of IgG and IgA MBCs specific to recombinant protein Rv2659c and Rv3128c by ELISpot assay. The composition of MBC subsets IgA(+) and IgG (+) was analyzed by flow cytometry. RESULTS: The number of IgA MBCs specific to antigen Rv2659c was significantly higher in the LTBI group than the TB group. In contrast, no significant difference was found in IgA or IgG MBCs against antigen Rv3128c. The number of IgA(+) MBCs was significantly higher than that of IgG(+) MBCs in the classical MBC subset of the LTBI group. CONCLUSION: The results indicated that the dormancy-associated antigen Rv2659c induced an IgA MBCs response in individuals with latent TB, and IgA(+) classical MBCs formed a major portion of the MBCs subset. This new knowledge will be beneficial for the development of novel TB vaccines and their control of latent TB. CI - Copyright (c) 2021 The Author(s). Published by Elsevier Ltd.. All rights reserved. FAU - Soe, Phyu Thwe AU - Soe PT AD - Department of Clinical Microbiology and Applied Technology, Faculty of Medical Technology, Mahidol University, Bangkok, Thailand; Department of Medical Laboratory Technology, University of Medical Technology, Mandalay, Myanmar. FAU - Hanthamrongwit, Jariya AU - Hanthamrongwit J AD - Department of Clinical Microbiology and Applied Technology, Faculty of Medical Technology, Mahidol University, Bangkok, Thailand. FAU - Saelee, Chutiphon AU - Saelee C AD - Department of Clinical Microbiology and Applied Technology, Faculty of Medical Technology, Mahidol University, Bangkok, Thailand. FAU - Kyaw, Soe Paing AU - Kyaw SP AD - Clinical Pathology Laboratory, (1000) Bedded General Hospital, Nay Pyi Taw, Myanmar. FAU - Khaenam, Prasong AU - Khaenam P AD - Center of Standardization and Product Validation, Faculty of Medical Technology, Mahidol University, Bangkok, Thailand. FAU - Warit, Saradee AU - Warit S AD - Industrial Tuberculosis Team, IMMBRG, National Center for Genetic Engineering and Biotechnology (BIOTEC), NSTDA, Pathum Thani, Thailand. FAU - Satproedprai, Nusara AU - Satproedprai N AD - Genomic Medicine and Innovation Support Division, Department of Medical Sciences, Ministry of Public Health, Thailand. FAU - Mahasirimongkol, Surakameth AU - Mahasirimongkol S AD - Genomic Medicine and Innovation Support Division, Department of Medical Sciences, Ministry of Public Health, Thailand. FAU - Yanai, Hideki AU - Yanai H AD - Department of Clinical Laboratory, Fukujuji Hospital, Japan Anti-Tuberculosis Association (JATA), Tokyo, Japan. FAU - Chootong, Patchanee AU - Chootong P AD - Department of Clinical Microbiology and Applied Technology, Faculty of Medical Technology, Mahidol University, Bangkok, Thailand. FAU - Leepiyasakulchai, Chaniya AU - Leepiyasakulchai C AD - Department of Clinical Microbiology and Applied Technology, Faculty of Medical Technology, Mahidol University, Bangkok, Thailand. Electronic address: chaniya.lee@mahidol.edu. LA - eng PT - Journal Article DEP - 20210718 PL - Canada TA - Int J Infect Dis JT - International journal of infectious diseases : IJID : official publication of the International Society for Infectious Diseases JID - 9610933 RN - 0 (Antigens, Bacterial) RN - 0 (Immunoglobulin A) RN - 0 (Immunoglobulin G) SB - IM MH - Antigens, Bacterial MH - B-Lymphocytes MH - Humans MH - Immunoglobulin A MH - Immunoglobulin G MH - *Latent Tuberculosis MH - Leukocytes, Mononuclear MH - *Mycobacterium tuberculosis OTO - NOTNLM OT - Latent tuberculosis infection OT - Memory B cells OT - Rv2659c OT - Rv3128c EDAT- 2021/07/21 06:00 MHDA- 2021/09/29 06:00 CRDT- 2021/07/20 20:12 PHST- 2021/05/19 00:00 [received] PHST- 2021/07/12 00:00 [revised] PHST- 2021/07/13 00:00 [accepted] PHST- 2021/07/21 06:00 [pubmed] PHST- 2021/09/29 06:00 [medline] PHST- 2021/07/20 20:12 [entrez] AID - S1201-9712(21)00589-0 [pii] AID - 10.1016/j.ijid.2021.07.033 [doi] PST - ppublish SO - Int J Infect Dis. 2021 Sep;110:75-82. doi: 10.1016/j.ijid.2021.07.033. Epub 2021 Jul 18.