Browse
Submit Data
Databases
API
Help

Dataset Information

0 Views

0 Connections

0 Citations

0 Reanalyses

0 Downloads

Omics score: 0

Macrophage response towards infection by the Leishmania-viral endosymbiont duo

ABSTRACT: Leishmania RNA virus 1 (LRV1) is a double stranded RNA (dsRNA) virus found in some strains of the human protozoan parasite Leishmania, the causative agent of leishmaniasis, a neglected tropical disease. Interestingly, the presence of LRV1 inside Leishmania constitutes an important virulence factor which worsens leishmaniasis outcome in a type I interferon (type I IFN) dependent manner and contributes to treatment failure. Understanding how macrophages respond towards Leishmania alone or in combination with LRV1 as well as the role that type I IFNs may play during infection is fundamental to oversee new therapeutic strategies. In order to dissect the macrophage response towards infection, RNA Sequencing (RNA-Seq) was performed on murine wild-type (WT) bone marrow derived macrophages infected with Leishmania guyanensis (Lgy) devoid or not of LRV1 (LgyLRV1- and LgyLRV1+ respectively) or co-infected with LgyLRV1- and Lymphocytic choriomeningitis virus (LCMV) for 8 and 24 hours. Additionally, macrophages were treated with type I IFN (IFNα or IFNβ) after 6 hours of infection.

ORGANISM(S): Mus musculus

PROVIDER: GSE203088 | GEO | 2022/05/19

REPOSITORIES: GEO

ACCESS DATA

Json Xml

Dataset's files

Source:

			Action	DRS
		Other

Items per page:

1 - 1 of 1

Similar Datasets

Transcriptomics analysis highlights potential ways in human pathogenesis in Leishmania braziliensis infected with the viral endosymbiont LRV1

Project description:Leishmania (Viannia) braziliensis is a parasite prevalent in Brazil and associated with tegumentary leishmaniasis (TL), including cutaneous (CL) and mucosal (ML) forms. The mechanisms of pathogenesis of TL are not fully understood, including some factors related to the host and parasite interaction in response to infection, and especially about Leishmania RNA Virus 1 (LRV1), an endosymbiont virus parasitizing Leishmania species, particularly triggers ML. Molecular approaches are usually applied to compare situations and to understand these interactions. Here, microarray analysis identified 162 differentially expressed genes in LbLRV1+ vs. LbLRV1- infection, with 126 upregulated genes related to IFN signaling, OAS/RNAse L, vitamin D3, and RIG-I type receptors. Additionally, 36 down-regulated genes were observed. Then, two validation assays were performed to confirm these results (RT-qPCR and Cytometric Bead Array). The main results comprise the differential gene expression in cells infected with LbLRV1+ compared to LbLRV1- and control, with overexpression of various genes in LbLRV1+ cells. Cytokine levels showed no significant differences between LbLRV1+ and LbLRV1-. This study highlighted the activation of the OAS/RNase L signaling pathway and the non-genomic actions of vitamin D3 in LbLRV1+ infection compared to LbLRV1- and control. This research contributes to our understanding of the immune response and molecular pathways involved in Leishmania infections, particularly in the presence of LRV1. We used microarrays to detail the global gene expression program underlying infection of human mnocyte-derived macrophages with LbLRV1-, LbLRV1+ and identified distinct classes of genes upregulated during this process.

2024-04-06 | GSE247487 | GEO

MicroRNAome comparison between macrophages infected with Leishmania RNA virus containing L.guyanensis and virus-free parasites

Project description:Leishmania RNA virus is an endosymbiotic virus of obligate intracellular Leishmania parasites. The presence of Leishmania RNA virus has been associated to metastatic leishmaniasis in hamsters and the failure of the first-line treatment in humans. This experiment aims to find the differences in the microRNA profile of bone-marrow derived macrophages infected with Leishmania RNA virus containing L.guyanensis or virus-free parasites.

2016-09-01 | E-MTAB-4413 | biostudies-arrayexpress

Leishmania major infection-induced changes in the small RNA transcriptome of host macrophages.

Project description:Protozoan parasites of the genus Leishmania are the causative agent of leishmaniasis, one of the 13 most important tropical diseases. Leishmania persists as endo-parasite in host macrophages, where it uses multiple strategies to manipulate the microbicidal host cell functions and to escape from the host immune system. Understanding how Leishmania interacts with host macrophages during uptake, differentiation, intracellular replication, and release might be the key to develop new drugs in target-directed approaches to treat patient with leishmaniasis. Short non-coding RNAs are known to regulate the expression of protein-coding genes at post-transcriptional level. Characterization of these processes during Leishmania infection provides deeper insight in the interaction between host and parasites. Here, we generated miRNA expression profiles from bone marrow-derived macrophages (BMDM) at 4h and 24h post infection (p.i.) with Leishmania major and respective controls.

2015-08-03 | E-GEOD-58369 | biostudies-arrayexpress

Macrophage response towards infection by the Leishmania-viral endosymbiont duo

Project description:Macrophage response towards infection by the Leishmania-viral endosymbiont duo

| PRJNA838552 | ENA

Leishmania major modulates autophagy in host macrophages during intracellular differentiation

Project description:Autophagy generally participates in innate immunity by elimination of intracellular pathogens. However, many of them developed successful strategies to counteract their autolysosomal digestion and lastly to exploit this catabolic cellular process. Protozoan parasites of the genus Leishmania are the causative agent of leishmaniasis, one of the 13 most important tropical diseases. Leishmania persists as endo-parasite in host macrophages, where it uses multiple strategies to manipulate the microbicidal host cell functions and to escape from the host immune system. Understanding how Leishmania interacts with host macrophages during uptake, differentiation, intracellular replication, and release might be the key to develop new drugs in target-directed approaches to treat patient with leishmaniasis. Here, we generated expression profiles from bone marrow-derived macrophages (BMDM) at 1h and 24h post infection (p.i.) with Leishmania major and respective controls.

2015-08-03 | E-GEOD-52624 | biostudies-arrayexpress

Leishmania major infection-induced changes in the small RNA transcriptome of host macrophages.

2015-08-03 | GSE58369 | GEO

Leishmania major modulates autophagy in host macrophages during intracellular differentiation

2015-08-03 | GSE52624 | GEO

Gene-expression data of female wild-type (WT) and knock-out (KO) bone marrow derived macrophages (BMDMs) from C57BL/7 mice

Project description:Leishmania are medically relevant protozoan parasites that cause leishmaniasis, a neglected tropical disease that can differently manifest depending on the species and the immune status of the host. Previously, it has been suggested that the presence of an endosymbiont double stranded RNA virus, Leishmania RNA Virus 1 (LRV1), within the parasite may leed to an exarcerbation of the disease outcome and represents an important factor for treatment failure and relapse. Here, we provide gene expression data of wild-type (WT) and various knock-out (KO) bone marrow derived macrophages (BMDMs) from mice (C57BL/6) in different conditions of infections and treatments. We included BMDMs from WT, Ifnar-/-, IFNg-/-, iNOs-/-, Nlrx1-/-, Nox2-/- and Prx5-/- mice. BMDMs were either infected with a human protozoan parasite Leishmania guyanensis with or without its endosymbiant dsRNA virus, LRV1 (LgyLRV1+ and LgyLRV1-, respectively). Alternatively BMDMs were treated with poly I:C, a synthetic dsRNA or a TLR2 agonist FSL1 to identify virus dependetn pathways or to explore the impact of co-exposure to additional agents, respectively.

2022-04-20 | GSE201120 | GEO

Blood transcription profiling of infections of humans with Leishmania infantum.

Project description:Gene expression profiling to address the effects of infection with Leishmania infantum during distinct clinical outcomes as active visceral leishmaniasis (VL), remission of disease and asymptomatic infection.

2016-10-25 | GSE77528 | GEO

Real-Time qPCR Array of miRNAs in Leishmania-infected THP-1 macrophages

Project description:Leishmania amazonensis is a protozoan that primarily infects macrophages and causes cutaneous leishmaniasis in humans. MicroRNAs (miRNAs) are small noncoding RNAs that regulate gene expression at posttranscriptional levels. Previous work demonstrated changes in miRNA profile of host cells favoring parasite survivel. Thus, here we demonstrate that human macrophages upregulate several miRNAs on the initial time points of infection, including the hsa-miR-372, hsa-miR-373, and hsa-miR-520d, which present the same seed. Further functional analysis demonstrated that inhibition of the miR-372 impaired Leishmania survival in THP-1 macrophages and the effect was further enhanced with combinatorial inhibition of the miR-372/373/520d family, pointing to a cooperative mechanism. Our study demonstrated miRNA-dependent modulation of polyamines production, establishing permissive conditions for intracellular parasite survival.Our findings suggest that the miR-372/373/520d family may represent a potential target for the development of new therapeutic strategies against cutaneous leishmaniasis.

2023-09-11 | GSE242513 | GEO

OmicsDI is part of the ELIXIR infrastructure

OmicsDI is an Elixir interoperability service. Learn more ›

Tweets

OmicsDI Databases

PRIDE
PeptideAtlas
MassIVE
JPOST Repository
Physiome Model Repository

EGA
EVA
ENA
LINCS
PAXDB
Cell Collective

MetaboLights
Metabolomics Workbench
MetabolomeExpress
GNPS
BioModels
FAIRDOMHub

ArrayExpress
dbGaP
ExpressionAtlas
GEO
NODE

Information

Databases
Help
API
Contact us
Code on GitHub
Terms of use
Submit Data