» Articles » PMID: 18308638

Alteration of the Relative Levels of INKT Cell Subsets is Associated with Chronic Mycobacterial Infections

Abstract

CD1d-restricted invariant natural killer T cells (iNKT cells) have been identified as an important type of effector and regulatory T cell, but their roles in the chronic infectious diseases caused by Mycobacterium tuberculosis and Mycobacterium leprae remain poorly defined. Here, we studied circulating human iNKT cells in blood samples from tuberculosis (TB) and leprosy patients. We found that the percentages of iNKT cells among total circulating T cells in TB and leprosy patients were not significantly different from those in normal controls. However, both TB and leprosy patients showed a selective reduction of the proinflammatory CD4(-)CD8beta(-) (DN) iNKT cells with a proportionate increase in the CD4(+) iNKT cells. Similar phenotypic alterations in circulating iNKT cells were observed in a mouse model of M. tuberculosis infection. Taken together, these findings indicate that the selective reduction of circulating DN iNKT cells is associated with chronic infections caused by M. tuberculosis and M. leprae.

Citing Articles

An update on leprosy immunopathogenesis: systematic review.

Silva M, Silva C, Brasil T, Alves A, Dos Santos E, Frota C Front Immunol. 2024; 15:1416177.

PMID: 39308868 PMC: 11412872. DOI: 10.3389/fimmu.2024.1416177.


Microbiota and Immunity during Respiratory Infections: Lung and Gut Affair.

Marrella V, Nicchiotti F, Cassani B Int J Mol Sci. 2024; 25(7).

PMID: 38612860 PMC: 11012346. DOI: 10.3390/ijms25074051.


Early innate cell interactions with in protection and pathology of tuberculosis.

Sankar P, Mishra B Front Immunol. 2023; 14:1260859.

PMID: 37965344 PMC: 10641450. DOI: 10.3389/fimmu.2023.1260859.


A humanized mouse model for evaluation of invariant Natural Killer T cell responses.

Saavedra-Avila N, Dellabona P, Casorati G, Veerapen N, Besra G, Howell A Front Immunol. 2022; 13:1011209.

PMID: 36263021 PMC: 9574442. DOI: 10.3389/fimmu.2022.1011209.


High Dimensionality Reduction and Immune Phenotyping of Natural Killer and Invariant Natural Killer Cells in Latent Tuberculosis-Diabetes Comorbidity.

Kathamuthu G, Kumar N, Moideen K, Menon P, Babu S J Immunol Res. 2022; 2022:2422790.

PMID: 35242883 PMC: 8886750. DOI: 10.1155/2022/2422790.


References
1.
Wilson S, Kent S, Patton K, Orban T, Jackson R, EXLEY M . Extreme Th1 bias of invariant Valpha24JalphaQ T cells in type 1 diabetes. Nature. 1998; 391(6663):177-81. DOI: 10.1038/34419. View

2.
Gadola S, Dulphy N, Salio M, Cerundolo V . Valpha24-JalphaQ-independent, CD1d-restricted recognition of alpha-galactosylceramide by human CD4(+) and CD8alphabeta(+) T lymphocytes. J Immunol. 2002; 168(11):5514-20. DOI: 10.4049/jimmunol.168.11.5514. View

3.
Barcelos W, Martins-Filho O, Guimaraes T, Oliveira M, Spindola-de-Miranda S, Carvalho B . Peripheral blood mononuclear cells immunophenotyping in pulmonary tuberculosis patients before and after treatment. Microbiol Immunol. 2006; 50(8):597-605. DOI: 10.1111/j.1348-0421.2006.tb03834.x. View

4.
Smith C, Peter A, Appell K . Effects of stepwise cryodilution prior to freezing and stepwise post-thaw rehydration on viability of ovine embryos. Theriogenology. 1994; 41(6):1267-71. DOI: 10.1016/0093-691x(94)90484-z. View

5.
Snyder-Cappione J, Nixon D, Loo C, Chapman J, Meiklejohn D, Melo F . Individuals with pulmonary tuberculosis have lower levels of circulating CD1d-restricted NKT cells. J Infect Dis. 2007; 195(9):1361-4. DOI: 10.1086/513567. View