Dissection of the macrophage response towards infection by the Leishmania-viral endosymbiont duo and dynamics of the type I interferon response.

Details

Ressource 1Download: fcimb-12-941888.pdf (5670.62 [Ko])
State: Public
Version: Final published version
License: CC BY 4.0
Serval ID
serval:BIB_8E5B725F389C
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Dissection of the macrophage response towards infection by the Leishmania-viral endosymbiont duo and dynamics of the type I interferon response.
Journal
Frontiers in cellular and infection microbiology
Author(s)
Bekkar A., Isorce N., Snäkä T., Claudinot S., Desponds C., Kopelyanskiy D., Prével F., Reverte M., Xenarios I., Fasel N., Teixeira F.
ISSN
2235-2988 (Electronic)
ISSN-L
2235-2988
Publication state
Published
Issued date
2022
Peer-reviewed
Oui
Volume
12
Pages
941888
Language
english
Notes
Publication types: Journal Article
Publication Status: epublish
Abstract
Leishmania RNA virus 1 (LRV1) is a double-stranded RNA 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 that worsens the leishmaniasis outcome in a type I interferon (IFN)-dependent manner and contributes to treatment failure. Understanding how macrophages respond toward 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. To dissect the macrophage response toward infection, RNA sequencing was performed on murine wild-type and Ifnar-deficient bone marrow-derived macrophages infected with Leishmania guyanensis (Lgy) devoid or not of LRV1. Additionally, macrophages were treated with poly I:C (mimetic virus) or with type I IFNs. By implementing a weighted gene correlation network analysis, the groups of genes (modules) with similar expression patterns, for example, functionally related, coregulated, or the members of the same functional pathway, were identified. These modules followed patterns dependent on Leishmania, LRV1, or Leishmania exacerbated by the presence of LRV1. Not only the visualization of how individual genes were embedded to form modules but also how different modules were related to each other were observed. Thus, in the context of the observed hyperinflammatory phenotype associated to the presence of LRV1, it was noted that the biomarkers tumor-necrosis factor α (TNF-α) and the interleukin 6 (IL-6) belonged to different modules and that their regulating specific Src-family kinases were segregated oppositely. In addition, this network approach revealed the strong and sustained effect of LRV1 on the macrophage response and genes that had an early, late, or sustained impact during infection, uncovering the dynamics of the IFN response. Overall, this study contributed to shed light and dissect the intricate macrophage response toward infection by the Leishmania-LRV1 duo and revealed the crosstalk between modules made of coregulated genes and provided a new resource that can be further explored to study the impact of Leishmania on the macrophage response.
Keywords
Animals, Humans, Interferon Type I, Leishmania, Leishmaniasis/parasitology, Leishmaniavirus, Macrophages/parasitology, Mice, Leishmania RNA virus 1 (LRV1), RNA sequencing (RNA-Seq), interleukin 6 (IL-6), macrophage, tumor-necrosis factor alpha (TNF-α), type I interferon (IFN), weighted gene coexpression network analysis (WGCNA)
Pubmed
Web of science
Open Access
Yes
Create date
30/08/2022 8:45
Last modification date
18/10/2023 6:19
Usage data