Acanthoic acid is a pimaradiene diterpene isolated from Acanthopanax koreanum with anti-inflammatory activities. Acanthoic acid downregulates LPS-induced IL-1β, IL-6 and TNF-α production in BALF, attenuates lung histopathologic changes, and inhibits infla
Preterramide C is a fungal metabolite that has been found inA. terreus.1It is active againstS. aureus(MIC = 52.4 μM) but notE. aerogenes,P. aeruginosa, orC. albicans(MICs = >100 μM for all).2Preterramide C inhibits the growth of L5178Y mouse lymphoma cells with an IC50value of 0.1 μg/ml.3It also inhibits nitric oxide (NO) production induced by LPS in RAW 264.7 cells (IC50= 5.48 μM).
Nargenicin is a macrolide antibiotic that selectively inhibits the growth of S. aureus, methicilin resistant S. aureus (MRSA), and M. luteus (MICs = 0.6, 0.3, and 2.5 μg/ml, respectively) over a panel of 11 Gram-positive and Gram-negative bacteria (MICs = >80 μg/ml). [1] It dose-dependently inhibits S. aureus DnaE in the presence of DNase I-activated DNA and E. coli DnaE when used at concentrations of 0.00001-0.1 and 0.01-100 μg/mL, respectively. [2] In murine BV-2 microglial cells, nargenicin (1 μM) inhibits cytokine expression and nitric oxide production induced by LPS.[3] Nargenicin (200 μM), when used in combination with 1,25-dihydroxyvitamin D3 or all-trans retinoic acid , reduces cell proliferation by 37-47% and increases cell differentiation by 82-85% in HL-60 human myeloid leukemia cells.[4]
Chitohexaose hexahydrochloride is a chitosan oligosaccharide compound that possesses anti-inflammatory properties. It exerts its anti-inflammatory effect by binding to the active sites of TLR4, thereby inhibiting inflammation induced by LPS. This compound has been supported by references [1] and [2].
9(S),12(S),13(S)-TriHOME is a linoleic acid-derived oxylipin that has diverse biological activities.1,2,3,4It has been found in various plants and is produced in human eosinophils in a 15-lipoxygenase-dependent, soluble epoxide hydrolase-independent manner.1,59(S),12(S)13(S)-TriHOME inhibits antigen-induced β-hexosaminidase release from RBL-2H3 mast cells (IC50= 28.7 μg/ml).2It inhibits LPS-induced nitric oxide (NO) production in BV-2 microglia (IC50= 40.95 μM).3In vivo, 9(S),12(S),13(S)-TriHOME (1 g/animal) enhances the antiviral IgA and IgG antibody responses induced by a nasal influenza hemagglutinin (HA) vaccine by 5.2- and 2-fold, respectively, in mice.4
1.Hamberg, M., and Hamberg, G.Peroxygenase-catalyzed fatty acid epoxidation in cereal seeds: Sequential oxidation of linoleic acid into 9(S),12(S),13(S)-trihydroxy-10(E)-octadecenoic acidPlant Physiol.110(3)807-815(1996) 2.Hong, S.S., and Oh, J.S.Inhibitors of antigen-induced degranulation of RBL-2H3 cells isolated from wheat branJ. Korean Soc. Appl. Biol. Chem.5569-74(2012) 3.Kim, C.S., Kwon, O.W., Kim, S.Y., et al.Five new oxylipins from Chaenomeles sinensisLipids49(11)1151-1159(2014) 4.Shirahata, T., Sunazuka, T., Yoshida, K., et al.Total synthesis, elucidation of absolute stereochemistry, and adjuvant activity of trihydroxy fatty acidsTetrahedron62(40)9483-9496(2006) 5.Fuchs, D., Tang, X., Johnsson, A.-K., et al.Eosinophils synthesize trihydroxyoctadecenoic acids (TriHOMEs) via a 15-lipoxygenase dependent processBiochim. Biophys. Acta Mol. Cell Biol. Lipids1865(4)158611(2020)
Streptazolin is a fungal metabolite originally isolated from S. viridochromogenes. It increases NF-κB activity when used at concentrations ranging from 60 to 130 μg/ml, at least in part, via PI3K signaling. Streptazolin enhances TNF-α secretion induced by LPS and enhances IL-8 secretion when used alone or in combination with LPS in THP-1 Blue cells.