Browse
Submit Data
Databases
API
Help

Dataset Information

9 Views

0 Connections

0 Citations

0 Reanalyses

0 Downloads

Omics score: 0

New Players in the Same Old Game: Disturbance of Group 2 Innate Lymphoid Cells in HIV-1 and Mycobacterium leprae Co-infected Patients.

ABSTRACT: Leprosy control is achieved through a fine-tuning of TH1 and TH2 immune response pattern balance. Given the increasing epidemiological overlay of HIV and M. leprae infections, immune response in co-infected patients consists in an important contemporary issue. Here we describe for the first time the innate lymphoid cells compartment in peripheral blood of leprosy and HIV/M. leprae co-infected patients, and show that co-infection increases group 2 innate lymphoid whilst decreasing group 1 innate lymphoid cells frequencies and function.

SUBMITTER: Papotto PH

PROVIDER: S-EPMC4559394 | biostudies-literature | 2015

REPOSITORIES: biostudies-literature

ACCESS DATA

Json Xml

Publications

New Players in the Same Old Game: Disturbance of Group 2 Innate Lymphoid Cells in HIV-1 and Mycobacterium leprae Co-infected Patients.

Papotto Pedro Henrique PH Maeda Solange S Tomimori Jane J Xavier Marília Brasil MB Rizzo Luiz Vicente LV Kallas Esper Georges EG Carvalho Karina Inácio KI

PLoS neglected tropical diseases 20150903 9

Leprosy control is achieved through a fine-tuning of TH1 and TH2 immune response pattern balance. Given the increasing epidemiological overlay of HIV and M. leprae infections, immune response in co-infected patients consists in an important contemporary issue. Here we describe for the first time the innate lymphoid cells compartment in peripheral blood of leprosy and HIV/M. leprae co-infected patients, and show that co-infection increases group 2 innate lymphoid whilst decreasing group 1 innate ...[more]

PMID: 26335023

Similar Datasets

Mycobacterium leprae genomes from naturally infected nonhuman primates.

Project description:Leprosy is caused by the bacterial pathogens Mycobacterium leprae and Mycobacterium lepromatosis. Apart from humans, animals such as nine-banded armadillos in the Americas and red squirrels in the British Isles are naturally infected with M. leprae. Natural leprosy has also been reported in certain nonhuman primates, but it is not known whether these occurrences are due to incidental infections by human M. leprae strains or by M. leprae strains specific to nonhuman primates. In this study, complete M. leprae genomes from three naturally infected nonhuman primates (a chimpanzee from Sierra Leone, a sooty mangabey from West Africa, and a cynomolgus macaque from The Philippines) were sequenced. Phylogenetic analyses showed that the cynomolgus macaque M. leprae strain is most closely related to a human M. leprae strain from New Caledonia, whereas the chimpanzee and sooty mangabey M. leprae strains belong to a human M. leprae lineage commonly found in West Africa. Additionally, samples from ring-tailed lemurs from the Bezà Mahafaly Special Reserve, Madagascar, and chimpanzees from Ngogo, Kibale National Park, Uganda, were screened using quantitative PCR assays, to assess the prevalence of M. leprae in wild nonhuman primates. However, these samples did not show evidence of M. leprae infection. Overall, this study adds genomic data for nonhuman primate M. leprae strains to the existing M. leprae literature and finds that this pathogen can be transmitted from humans to nonhuman primates as well as between nonhuman primate species. While the prevalence of natural leprosy in nonhuman primates is likely low, nevertheless, future studies should continue to explore the prevalence of leprosy-causing pathogens in the wild.

| S-EPMC5790234 | biostudies-literature

Innate immunity and the regulation and mobilization of keratinocyte stem cells: are the old players playing a new game?

Project description:The skin provides an anatomical barrier to physical, chemical and biological agents. Hence, it is not surprising that it has well-developed innate immunity. What we find surprising is that the CD49f(+) /CD34(+) hair follicle stem cells should have an enriched expression profile of so many genes involved in innate immunity. Do these stem cells require extra protection from environmental insults? Or, could there be a new role for these genes? To probe these questions, we first summarize the roles of some key players in epidermal innate immunity. We next focus on their expression in CD49f(+) /CD34(+) hair follicle stem cells. Then, we consider recent data suggesting a new role for these 'old players' in the regulation and mobilization of haematopoietic and mesenchymal stem cells. Finally, we hypothesize that the 'old players' in these hair follicle stem cells may be playing a 'new game'.

| S-EPMC3422764 | biostudies-literature

Innate lymphoid cell disturbance with increase in ILC1 in systemic lupus erythematosus.

Project description:The innate lymphoid cell (ILC) is a group of effector cells with diverse important cellular functions in both health and disease states. In comparison with healthy controls, there were increases in circulating ILC in SLE patients. The proportion of ILC1 significantly increased with significant decreases of ILC2 in SLE patients and ILC3 in SLE patients with moderate to severe activity. IL-12, IL-18, IL-25, IL-33, IL-23, IL-1β and IFN-γ were significantly increased in SLE patients. Moreover, IL-12, IL-18 and IL-1β but not IFN-γ correlated significantly with SLEDAI. Successful treatments rapidly reduced them and with certain normalization of the ILC subsets. In addition to increases in ILC1 numbers, ~ 80% of the ILC1 in SLE patients were positive for synthesis of IFN-γ. Plasma from SLE patients were shown to be potent in inducing ILC1. Thus, increased circulating ILC1 might contribute to the pathogenesis of SLE through mounting type 1 immune response.

| S-EPMC8191378 | biostudies-literature

Transcriptome analysis in Mycobacterium leprae (M. leprae)-infected granuloma of BALB/c nu/nu mice

2011-03-17 | GSE24120 | GEO

Clofazimine modulates the expression of lipid metabolism proteins in Mycobacterium leprae-infected macrophages.

Project description:Mycobacterium leprae (M. leprae) lives and replicates within macrophages in a foamy, lipid-laden phagosome. The lipids provide essential nutrition for the mycobacteria, and M. leprae infection modulates expression of important host proteins related to lipid metabolism. Thus, M. leprae infection increases the expression of adipophilin/adipose differentiation-related protein (ADRP) and decreases hormone-sensitive lipase (HSL), facilitating the accumulation and maintenance of lipid-rich environments suitable for the intracellular survival of M. leprae. HSL levels are not detectable in skin smear specimens taken from leprosy patients, but re-appear shortly after multidrug therapy (MDT). This study examined the effect of MDT components on host lipid metabolism in vitro, and the outcome of rifampicin, dapsone and clofazimine treatment on ADRP and HSL expression in THP-1 cells. Clofazimine attenuated the mRNA and protein levels of ADRP in M. leprae-infected cells, while those of HSL were increased. Rifampicin and dapsone did not show any significant effects on ADRP and HSL expression levels. A transient increase of interferon (IFN)-? and IFN-? mRNA was also observed in cells infected with M. leprae and treated with clofazimine. Lipid droplets accumulated by M. leprae-infection were significantly decreased 48 h after clofazimine treatment. Such effects were not evident in cells without M. leprae infection. In clinical samples, ADRP expression was decreased and HSL expression was increased after treatment. These results suggest that clofazimine modulates lipid metabolism in M. leprae-infected macrophages by modulating the expression of ADRP and HSL. It also induces IFN production in M. leprae-infected cells. The resultant decrease in lipid accumulation, increase in lipolysis, and activation of innate immunity may be some of the key actions of clofazimine.

| S-EPMC3516583 | biostudies-literature

Profiling of Gene expression in Mycobacterium leprae (M. leprae)-infected footpad of BALB/c nu/nu mice

Project description:Our goal is to understand the mechanism of granuloma formation in molecular level using Mycobacterium leprae (M. leprae)-infected footpads.

2011-03-17 | GSE22784 | GEO

Expression data from control and Mycobacterium leprae-infected mouse Schwann cells

Project description:Mycobacterium leprae infect mouse Schwann cells in vitro, reprogram the Schwann cells, and induce mesenchymal stem cell-like cells. In this reprogramming, a vast number of stem cell-related genes, especially those with transcription factor activities are differentially regulated We used microarrays to detail the global program of gene expression underlying the Mycobacterial infection and identified distinct classes of differentially-regulated genes during this process.

2017-03-07 | GSE95748 | GEO

Transcriptome of human monocyte-derived macrophages infected with live-Mycobacterium leprae

Project description:To this date, host transcriptome studies in leprosy have focused on Schwann cells, as well as mouse-footpad and skin biopsies. Despite macrophages being the most infected cell types in leprosy lesions, there is no genome-wide experiments with this model. Here, we aimed at identifying host macrophages transcriptional changes induced by live-Mycobacterium leprae infection for 48 hours.

2021-04-16 | GSE162416 | GEO

Transcriptome analysis in Mycobacterium leprae (M. leprae)-infected granuloma of BALB/c nu/nu mice

Project description:Our object is to characterize the distinguish gene enrichment group in skin of Mycobacterium leprae (M. leprae)-infected footpads compared to that of Mycobacterium leprae (M. leprae) non-infected footpads. One-condition experiment, Skin of M. leprae non-infected footpads (control) vs. Skin of M. leprae infected footpads (sample). Biological replicates: 3 control and 3 sample, independently grown and harvested from isolator. One replicate per array.

2011-03-17 | E-GEOD-24120 | biostudies-arrayexpress