2017 journal article
Disruption of Trim9 function abrogates macrophage motility in vivo
JOURNAL OF LEUKOCYTE BIOLOGY, 102(6), 1371–1380.
author keywords: chemotaxis; zebrafish; leukocyte; ubiquitin
MeSH headings : Animals; Cell Movement / genetics; Cell Shape; Chemotaxis; Humans; Macrophages / cytology; Macrophages / metabolism; Nerve Tissue Proteins / genetics; Nerve Tissue Proteins / metabolism; RNA, Messenger / genetics; RNA, Messenger / metabolism; Tripartite Motif Proteins / genetics; Tripartite Motif Proteins / metabolism; U937 Cells; Ubiquitin-Protein Ligases / genetics; Ubiquitin-Protein Ligases / metabolism; Zebrafish / genetics; Zebrafish / immunology; Zebrafish Proteins / genetics; Zebrafish Proteins / metabolism
TL;DR:
It is demonstrated that Trim9 mediates cellular movement and migration in Mϕs as well as neurons, and is implicated in axonal migration, and found that M ϕ chemotaxis and cellular architecture are subsequently impaired in vivo.
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UN Sustainable Development Goal Categories
3. Good Health and Well-being
(Web of Science)
Source: Web Of Science
Added: August 6, 2018
Abstract The vertebrate immune response comprises multiple molecular and cellular components that interface to provide defense against pathogens. Because of the dynamic complexity of the immune system and its interdependent innate and adaptive functionality, an understanding of the whole-organism response to pathogen exposure remains unresolved. Zebrafish larvae provide a unique model for overcoming this obstacle, because larvae are protected against pathogens while lacking a functional adaptive immune system during the first few weeks of life. Zebrafish larvae were exposed to immune agonists for various lengths of time, and a microarray transcriptome analysis was executed. This strategy identified known immune response genes, as well as genes with unknown immune function, including the E3 ubiquitin ligase tripartite motif-9 (Trim9). Although trim9 expression was originally described as “brain specific,” its expression has been reported in stimulated human Mϕs. In this study, we found elevated levels of trim9 transcripts in vivo in zebrafish Mϕs after immune stimulation. Trim9 has been implicated in axonal migration, and we therefore investigated the impact of Trim9 disruption on Mϕ motility and found that Mϕ chemotaxis and cellular architecture are subsequently impaired in vivo. These results demonstrate that Trim9 mediates cellular movement and migration in Mϕs as well as neurons.