PUBLICATION

Molecular characterization and expression analysis of Toll-like receptor 1 from large yellow croaker (Pseudosciaena crocea)

Authors
Wang, K., Mu, Y., Qian, T., Ao, J., and Chen, X.
ID
ZDB-PUB-131203-13
Date
2013
Source
Fish & shellfish immunology   35(6): 2046-50 (Journal)
Registered Authors
Keywords
Expression modulation, LPS, Large yellow croaker (Pseudosciaena crocea), Toll-like receptor 1
MeSH Terms
  • Immunity, Innate
  • Lipopolysaccharides/pharmacology
  • Animals
  • Cloning, Molecular
  • Amino Acid Sequence
  • Base Sequence
  • Gene Expression Regulation*
  • Tissue Distribution
  • Perciformes/genetics*
  • Perciformes/immunology*
  • Molecular Sequence Data
  • RNA, Messenger/genetics
  • RNA, Messenger/metabolism
  • Real-Time Polymerase Chain Reaction
  • Fish Proteins/genetics*
  • Fish Proteins/metabolism
  • Phylogeny
  • Toll-Like Receptor 1/genetics*
  • Toll-Like Receptor 1/metabolism
  • DNA, Complementary/genetics
  • DNA, Complementary/metabolism
PubMed
24184976 Full text @ Fish Shellfish Immunol.
Abstract

Toll-like receptors (TLRs) are a family of innate immune receptors that recognize molecular patterns associated with microbial pathogens (PAMP) and induce antimicrobial immune responses. Here we report the molecular cloning and characterization of a TLR1 homologue from the large yellow croaker (LycTLR1). The complete cDNA of LycTLR1 is 3487 nucleotides long, encoding a protein of 802 amino acids. The deduced LycTLR1 has a typical TLR domain architecture including 4 leucine-rich repeats (LRRs) (residues 42?491), one C-terminal LRR domain (residues 527?583) at the extracellular region and a TIR domain (residues 646?791) in the cytoplasmic region. Homology comparison shows that LycTLR1 has 76.8%?47.6% amino acid identity to known fish TLR1. Genomic analysis revealed that LycTLR1 consisted of only one exon in the coding region, which is conserved among other TLR1 from different mammalian species and fish analyzed to date, except the zebrafish. The mRNA of LycTLR1 was constitutively expressed in spleen, head kidney, blood, liver, heart, gills, intestine, brains and muscle, with the highest levels in spleen and blood. Upon stimulation with LPS, the LycTLR1 expression obviously increased in the anterior kidney cells of large yellow croaker, suggesting a role for LycTLR1 in the immune response to LPS.

Genes / Markers
Figures
Expression
Phenotype
Mutations / Transgenics
Human Disease / Model
Sequence Targeting Reagents
Fish
Antibodies
Orthology
Engineered Foreign Genes
Mapping