Regulation of Human T-cell Homing Receptor Expression in Cutaneous Bacterial Infection
Overview
Affiliations
We investigated the regulation of T-cell homing receptors in infectious disease by evaluating the cutaneous lymphocyte antigen (CLA) in human leprosy. We found that CLA-positive cells were enriched in the infectious lesions associated with restricting the growth of the pathogen Mycobacterium leprae, as assessed by the clinical course of infection. Moreover, CLA expression on T cells isolated from the peripheral blood of antigen-responsive tuberculoid leprosy patients increased in the presence of M. leprae (2.4-fold median increase; range 0.8-6.1, n = 17), but not in unresponsive lepromatous leprosy patients (1.0-fold median increase; range 0.1-2.2, n = 10; P < 0.005). Mycobacterium leprae specifically up-regulated the skin homing receptor, CLA, but not alpha(4)/beta(7), the intestinal homing receptor, which decreased on T cells of patients with tuberculoid leprosy after antigen stimulation (2.2-fold median decrease; range 1.6-3.4, n = 3). Our data indicate that CLA expression is regulated during the course of leprosy infection and suggest that T-cell responsiveness to a microbial antigen directs antigen-specific T cells to the site of infection.
Senescent T Cells in Age-Related Diseases.
Yu P, Zhou M, Liu Y, Du J Aging Dis. 2024; .
PMID: 38502582 PMC: 11745454. DOI: 10.14336/AD.2024.0219.
Pathak V, Singh I, Sharma B, Turankar R, Arora M, Singh S Heliyon. 2024; 10(3):e25254.
PMID: 38327455 PMC: 10847912. DOI: 10.1016/j.heliyon.2024.e25254.
Dendritic Cell Activation in Leprosy Using CD1a and Factor XIIIa Markers.
K K, S S, K S Cureus. 2023; 15(4):e37968.
PMID: 37223172 PMC: 10201461. DOI: 10.7759/cureus.37968.
Polaco Covre L, Devine O, Garcia de Moura R, Vukmanovic-Stejic M, Dietze R, Ribeiro-Rodrigues R Immunology. 2020; 159(4):429-440.
PMID: 31925782 PMC: 7078002. DOI: 10.1111/imm.13173.
Nahar Dos Santos L, Lopes da Silva P, Alvim I, Nery J, Lara F, Sarno E PLoS One. 2016; 11(10):e0164543.
PMID: 27764137 PMC: 5072666. DOI: 10.1371/journal.pone.0164543.