RRC ID 58575
Author Ali MFZ, Ohta T, Ido A, Miura C, Miura T.
Title The Dipterose of Black Soldier Fly (Hermetia illucens) Induces Innate Immune Response through Toll-Like Receptor Pathway in Mouse Macrophage RAW264.7 Cells.
Journal Biomolecules
Abstract In our study, a novel bioactive polysaccharide was identified in the larvae of the black soldier fly (BSF) (Hermetia illucens) as a molecule that activates the mammalian innate immune response. We attempted to isolate this molecule, which was named dipterose-BSF, by gel-filtration and anion-exchange chromatography, followed by nitric oxide (NO) production in mouse RAW264.7 macrophage cells as a marker of immunomodulatory activity. Dipterose-BSF had an average molecular weight of 1.47 × 105 and consisted of ten monosaccharides. Furthermore, in vitro assays demonstrated that dipterose-BSF enhanced the expression of proinflammatory cytokines and interferon β (IFNβ) in RAW264.7 cells. The inhibition of Toll-like receptor 2 (TLR2) and 4 (TLR4) significantly attenuated NO production by dipterose-BSF, indicating that dipterose-BSF stimulates the induction of various cytokines in macrophages via the TLR signaling pathway. This observation was analogous with the activation of nuclear factor kappa B in RAW264.7 cells after exposure to dipterose-BSF. Our results suggest that dipterose-BSF has immunomodulatory potential through activating the host innate immune system, which allows it to be a novel immunomodulator for implementation as a functional food supplement in poultry, livestock, and farmed fish.
Volume 9(11)
Published 2019-10-31
DOI 10.3390/biom9110677
PII biom9110677
PMID 31683715
PMC PMC6920837
MeSH Animals Immunity, Innate / drug effects* Immunologic Factors / chemistry Immunologic Factors / pharmacology* Larva / chemistry Mice Monosaccharides / analysis Polysaccharides / chemistry Polysaccharides / pharmacology* RAW 264.7 Cells Signal Transduction / drug effects* Simuliidae / chemistry* Toll-Like Receptors / metabolism*
IF 4.694
Times Cited 1
Resource
Human and Animal Cells RAW 264(RCB0535)