PUBLICATION
Identification and functional characterization of grass carp (Ctenopharyngodon idella) tumor necrosis factor receptor 2 and its soluble form with potentiality for targeting inflammation
- Authors
- Zhang, S., Wang, X., Li, C., Feng, S., Zhang, A., Yang, K., Zhou, H.
- ID
- ZDB-PUB-181205-1
- Date
- 2018
- Source
- Fish & shellfish immunology 86: 393-402 (Journal)
- Registered Authors
- Keywords
- Anti-inflammation, Bacterial infection, Functional identification, Grass carp, Soluble form, Tnf-? receptor 2
- MeSH Terms
-
- Perciformes/genetics*
- Perciformes/immunology*
- Animals
- Amino Acid Sequence
- Immunity, Innate/genetics*
- Signal Transduction
- Phylogeny
- Receptors, Tumor Necrosis Factor, Type II/chemistry
- Receptors, Tumor Necrosis Factor, Type II/genetics*
- Receptors, Tumor Necrosis Factor, Type II/immunology*
- Fish Proteins/chemistry
- Fish Proteins/genetics
- Fish Proteins/immunology
- Aeromonas hydrophila/physiology
- Fish Diseases/immunology*
- Inflammation/immunology
- Inflammation/veterinary
- Sequence Alignment/veterinary
- Gram-Negative Bacterial Infections/immunology
- Gram-Negative Bacterial Infections/veterinary
- Gene Expression Regulation/immunology*
- Gene Expression Profiling/veterinary
- PubMed
- 30502465 Full text @ Fish Shellfish Immunol.
Citation
Zhang, S., Wang, X., Li, C., Feng, S., Zhang, A., Yang, K., Zhou, H. (2018) Identification and functional characterization of grass carp (Ctenopharyngodon idella) tumor necrosis factor receptor 2 and its soluble form with potentiality for targeting inflammation. Fish & shellfish immunology. 86:393-402.
Abstract
Tumor necrosis factor-alpha (TNF-α) signals through two distinct cell surface receptors, TNFR1 and TNFR2 in mammals. In the present study, grass carp Tnfr2 (gcTnfr2) was isolated and characterized. Sequence alignment and phylogenetic analysis suggested that gcTnfr2 was a homolog of goldfish and zebrafish Tnfr2. Tissue distribution assay showed gctnfr2 transcripts were expressed in all examined tissues similar to gctnfr1. To functionally characterize the newly cloned molecule, gcTnfr2 was overexpressed in COS7 cell lines and it showed the ability to mediate the recombinant grass carp Tnf (rgcTnf)-α-triggered NF-κΒ activity and gcil1b promoter activity, clarifying its role in mediating Tnf-α signaling. The recombinant soluble form of gcTnfr2 (rgcsTnfr2) was prepared and it was able to interact with rgcTnf-α with higher affinity than that of rgcsTnfr1. Moreover, grass carp soluble Tnfr2 (gcsTnfr2) were detected in the culture medium of grass carp head kidney leukocytes (HKLs) and heat-inactivated A. hydrophila challenge significantly induced its production, indicating involvement of gcsTnfr2 in inflammation response. In agreement with this notion, rgcsTnfr2 effectively antagonized the effect of rgcTnf-α on il1b mRNA expression in HKLs, suggesting anti-Tnf-α property of gcsTnfr2. To strengthen the anti-inflammatory role of soluble Tnfr2, bacteria were injected intraperitoneally in grass carp followed by rgcsTnfr2. Hematoxylin-eosin (HE) staining of head kidney, spleen and intestine showed that rgcsTnfr2 could significantly improve infection-induced histopathological changes. These results functionally identified gcTnfr2 and its soluble form, particularly highlighting the role of gcsTnfr2 against Tnf-α-triggered inflammatory signaling. In this line, rgcsTnfr2 displayed anti-inflammatory potentiality during infection, thereby providing a powerful mediator of inflammation control in fish.
Genes / Markers
Expression
Phenotype
Mutations / Transgenics
Human Disease / Model
Sequence Targeting Reagents
Fish
Orthology
Engineered Foreign Genes
Mapping