Molecular cloning, characterization and mRNA expression of duck interleukin-17F

Veterinary Immunology and Immunopathology
Woo H KimW Min

Abstract

Interleukin-17F (IL-17F) is a proinflammatory cytokine that plays an important role in gut homeostasis. A full-length duck IL-17F (duIL-17F) cDNA with a 510-bp coding region was identified in ConA-activated splenic lymphocytes. duIL-17F is predicted to encode 166 amino acids, including a 26-amino acid signal peptide, a single N-linked glycosylation site, and six cysteine residues that are conserved in mammalian IL-17. duIL-17F shares 77.5% amino acid sequence identity with chicken IL-17F (chIL-17F), 37-46% with corresponding mammalian homologues, and 53.5% with the previously described duck IL-17A (duIL-17A). The duIL-17F transcripts were expressed in a wide range of untreated tissues; levels were highest in the liver and moderate in the thymus, bursa, kidney, and intestinal tissues. Expression levels of duIL-17F transcript were slightly up-regulated in ConA- and LPS-activated splenic lymphocytes but not in poly I:C stimulated cells. duIL-17F forms heterodimers with duIL-17A. Recombinant duIL-17F, like duIL-17A, induced IL-1β, IL-6, and IL-8 expression in duck embryonic fibroblasts (DEFs). duIL-17A, but not duIL-17F expression, was significantly up-regulated in the liver and spleen of Salmonella Typhimurium-infected ducks. Furt...Continue Reading

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Citations

Apr 10, 2016·Developmental and Comparative Immunology·Joyce Anne R DiazWongi Min
Sep 15, 2019·Scientific Reports·Rochelle A FloresWongi Min
Aug 7, 2017·Developmental and Comparative Immunology·Cherry P FernandezWongi Min

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