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Tuberculosis-associated IFN-I induces Siglec-1 on microtubule-containing tunneling nanotubes and favors HIV-1 spread in macrophages

ABSTRACT: Tuberculosis-associated IFN-I induces Siglec-1 on microtubule-containing tunneling nanotubes and favors HIV-1 spread in macrophages

PROVIDER: PRJNA580006 | ENA |

REPOSITORIES: ENA

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Tuberculosis-associated IFN-I induces Siglec-1 on microtubule-containing tunneling nanotubes and favors HIV-1 spread in macrophages

Project description:To understand the susceptbility of human M(IL-10) macrophages to human immunodeficiency virus, we performed a genome-wide transcriptome analysis in these cells to identify a gene profile responsible for this phenomenon. A distinct 60 gene-transcript signature was defined in M(IL-10) macrophages, using a combination of the expression level, statistical filters and hierarchical clustering; 51 genes were up-regulated and 9 genes were down-regulated in M(IL-10) macrophages compared to control cells. Among the genes upregulated, we identified a interferon-stimulated gene (ISG) signature include SIGLEC-1. We confirmed SIGLEC-1 and other five ISG genes by qPCR, FACS and western blot.

2020-04-04 | GSE139511 | GEO

Tuberculosis-associated IFN-I induces Siglec-1 on tunneling nanotubes and favors HIV-1 spread in macrophages.

Project description: Not available

| S-EPMC7173963 | biostudies-literature

Type-I interferon inducible genes 26 weeks after mCMV infection in Siglec-H wt and Siglec-H ko mice and their non infected controls

Project description:Type I interferons are critical anti-viral cytokines during virus infections and have also been implicated in the pathogenesis of systemic lupus erythematosus (SLE). The secretion of type I interferon of pDCs is modulated by Siglec-H, a DAP12 associated receptor on pDCs. We showed that Siglec-H deficient pDCs produce more of the type I interferon IFN-Î± in vitro and that Siglec-H ko mice produce more IFN-Î± after murine cytomegalovirus (mCMV) infection in vivo, leading to efficient clearance of the virus. Furthermore, ageing Siglec-H ko mice showed a mild form of systemic autoimmunity. In contrast, Siglec-H ko mice developed a severe form of systemic lupus-like autoimmune disease with strong kidney nephritis several weeks after a single mCMV infection. This induction of systemic autoimmune disease after virus infection in Siglec-H ko mice was accompanied by a type I interferon signature and fully dependent on type I interferon signaling. These results show that Siglec-H normally serves as modulator of type I interferon responses after infection with a persistent virus and thereby prevents induction of autoimmune disease. For microarray experiments gene expression profiles of total splenic cells from two wt and Siglec-H ko mice 26 weeks after infection with luciferase expressing murine Cytomegalovirus (5x105 pfu) or from two uninfected wt and Siglec-H ko control mice were analyzed

2016-03-16 | E-GEOD-79248 | biostudies-arrayexpress

Effect of soluble Siglec-14 on macrophage polarization

Project description:Influence of soluble Siglec-14 on macrophage poloarization was examined by analyzing the transcripts from human macrophages cultured in the presence or absence of recombinant soluble Siglec-14 protein

2018-10-29 | GSE121311 | GEO

Type-I interferon inducible genes 26 weeks after mCMV infection in Siglec-H wt and Siglec-H ko mice and their non infected controls

Project description:Type I interferons are critical anti-viral cytokines during virus infections and have also been implicated in the pathogenesis of systemic lupus erythematosus (SLE). The secretion of type I interferon of pDCs is modulated by Siglec-H, a DAP12 associated receptor on pDCs. We showed that Siglec-H deficient pDCs produce more of the type I interferon IFN-α in vitro and that Siglec-H ko mice produce more IFN-α after murine cytomegalovirus (mCMV) infection in vivo, leading to efficient clearance of the virus. Furthermore, ageing Siglec-H ko mice showed a mild form of systemic autoimmunity. In contrast, Siglec-H ko mice developed a severe form of systemic lupus-like autoimmune disease with strong kidney nephritis several weeks after a single mCMV infection. This induction of systemic autoimmune disease after virus infection in Siglec-H ko mice was accompanied by a type I interferon signature and fully dependent on type I interferon signaling. These results show that Siglec-H normally serves as modulator of type I interferon responses after infection with a persistent virus and thereby prevents induction of autoimmune disease.

2016-03-16 | GSE79248 | GEO

Phosphoproteomics identifies microglial Siglec-F inflammatory response during neurodegeneration

Project description:We used mRNA-seq analysis to explore the transcriptional response induced in BV-2 cells by stable overexpression Siglec-F and related human Siglec receptors compared to loss-of-function 2xY->F mutant receptors.

2020-09-01 | GSE149153 | GEO

Siglec receptors modulate dendritic cell activation and antigen presentation to T cells in cancer

Project description:Sialoglycan - Siglec axis has been reported to modulate the functions of multiple immune cell types. We found that inhibitory molecules human Siglec-9 and mouse Siglec-E both expressed at high level in tumor-infiltrating dendritic cells(DCs). Therefore, we generated mouse DC cell line lacking the expression of Siglec-E, and used bulk RNA sequencying to analyse how Siglec-E affects DC functions.

2022-03-23 | GSE190700 | GEO

RNA sequencing to determine gene expression changes in Siglec-15 knockdown oteosarcoma cells

Project description:In our study, we found that Siglec-15 was critical to osteosarcoma characteristics. To identify the downstream target genes of Siglec-15 in osteosarcoma, we conducted the RNA-seq analysis of Siglec-15 knockdown in osteosarcoma cell line 143B cells.

2021-05-25 | GSE175414 | GEO

Gene expression profiles of Siglec-14/THP-1 and Siglec-5/THP cell lines, with or without NTHi stimulation

Project description:Acquisition of a new strain of non-typeable Haemophilus influenzae (NTHi) is often associated with exacerbation of chronic obstructive pulmonary disease (COPD). We have previously reported that COPD patients who are homozygous null for SIGLEC14 gene is less susceptible to COPD exacerbation than those who have wild-type allele with functional SIGLEC14 gene. In order to gain insight into the mechanism behind the COPD exacerbation, and to find new clues that may lead to the discovery of objective biomarker of COPD exacerbation, Siglec-14/THP-1 and Siglec-5/THP-1 cell lines, which mimic monocytes from homozygous wild-type and homozygous SIGLEC14-null person, respectively, were incubated with or without NTHi, and their gene expression profiles were compared by using Affymetrix Human Genome U133 Plus 2.0 Array. Four samples (2 cell lines x 2 conditions) were analyzed. No replicates were made.

2014-08-04 | E-GEOD-47929 | biostudies-arrayexpress

The inhibitory receptor Siglec-G controls the severity of chronic lymphocytic leukemia

Project description:Chronic Lymphocytic Leukaemia (CLL) is the most common leukemia in adults in the Western world. B cell receptor (BCR) signalling is known to be crucial for the pathogenesis and maintenance of CLL cells develop from mature CD5+ B cells. BCR signalling is regulated by the inhibitory co-receptor Siglec-G and Siglec-G-deficient mice have an enlarged CD5+ B1a cell population. Here, we determine how Siglec-G expression influences the severity of CLL.

2023-05-03 | GSE227678 | GEO

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