ML355 is a potent and selective inhibitors of 12-Lipoxygenase(12-LOX) with IC50 of 0.34 μM, excellent selectivity over related lipoxygenases and cyclooxygenases, and possess favorable ADME properties.IC50 value: 0.34 μM [1]Target: 12-LOXML355 inhibits PAR-4 induced aggregation and calcium mobilization in human platelets and reduce 12-HETE in β-cells.
RWJ 63556 is an orally active COX-2 selective/5-lipoxygenase inhibitor, with anti-inflammatory activities.
5,8,11-Eicosatriynoic acid (ETI) is a lipoxygenase inhibitor that blocks LTC4 biosynthesis in mast cell tumor cells[1].
ICI 211965 is a selective and orally potent 5-Lipoxygenase (5-LPO) inhibitor.
Cirsiliol is a potent and selective 5-lipoxygenase inhibitor and a competitive low affinity benzodiazepine receptor ligand.
S-(+)-Marmesin is a natural coumarin, exhibiting COX-2/5-LOX dual inhibitory activity.
CJ-13,610, a nonredox-type 5-LO inhibitor, dose dependently suppresses 5-LO product formation in ionophore A23187-stimulated PMNL in the absence of exogenous AA with an IC50 of about 70 nM[1]. PMNL: polymorphonuclear leukocytes; AA: arachidonic acid
Masoprocol (meso-Nordihydroguaiaretic acid) is a potent and orally active lipoxygenase inhibitor. Masoprocol shows antihyperglycemic activity. Masoprocol decreases the glucose concentration and hepatic triglyceride in vivo. Masoprocol has the potential for the research of type II diabetes[1][2][3].
ThioLox is a competitive 15-lipoxygenase-1 (15-LOX-1) inhibitor with a Ki of 3.30 μM. ThioLox shows anti-inflammatory and neuroprotective properties[1].
5-O-Demethylnobiletin (5-Demethylnobiletin), a polymethoxyflavone isolated from Sideritis tragoriganum, is a direct inhibition of 5-LOX (IC50=0.1 μM), without affecting the expression of COX-2. 5-O-Demethylnobiletin (5-Demethylnobiletin) has anti-inflammatory activity, inhibits leukotriene B (4)(LTB4) formation in rat neutrophils and elastase release in human neutrophils with an IC50 of 0.35 μM[1].5-O-Demethylnobiletin (5-demethylnobiletin) promotes neuritogenesis through the activation of MAPK/ERK-, PKC-, and PKA-dependent signaling pathways[2].
1-Naphthyl 3,5-dinitrobenzoate is a potent 5-lipoxygenase inhibitor with IC50 values of 1.04 µM and 3.6 µM for 5-LOX and mPGES-1, respectively. 1-Naphthyl 3,5-dinitrobenzoate has strong inhibition activity in the human whole blood (HWB) assay with an IC50 value of 8.6 μM. 1-Naphthyl 3,5-dinitrobenzoate can be used in research of inflammation[1].
Pectolinarigenin, isolated from Cirsium chanroenicum, is a dual inhibitor of COX-2/5-LOX. Anti-inflammatory activity[1]. Pectolinarigenin has potent inhibitory activities on melanogenesis[2].
U66858 is a potent inhibitor of LTB4 production in human whole blood. U66858 also exhibits significant inhibition of lipoxygenase and TXB2 release.
β-Boswellic acid is isolated from the gum resin of Boswellia serrate.β-Boswellic acid is a nonreducing-type inhibitor of the 5-lipoxygenase (5-LO) product formation either interacting directly with the 5-LO or blocking its translocation[1]. β-Boswellic acid inhibits the synthesis of DNA, RNA and protein in human leukemia HL-60 cells[2].
Malotilate is a liver protein metabolism improved compound, which selectively inhibit the 5-lipoxygenase. IC50 Value:Target: 5-lipoxygenasein vitro: In an in vitro invasion assay using rat lung endothelial (RLE) cells, invasion of tumor cells which had been treated with MT (10 ng/ml, 24 h) was not affected; however, when RLE cells had been treated with MT, invasion was significantly inhibited in three cell lines (SAS, Ca9-22 and HSC-4) and a tendency to inhibition was also observed in other cell lines [1].in vivo: The improvement rates for choline esterase activity were significantly greater in the malotilate group than in the control group. Serum albumin levels significantly increased in the malotilate group but not in the control group [2]. In the rats treated with MT for 19 days after i.v. inoculation of c-SST-2 cells, lung metastasis was also significantly suppressed [3]. Malotilate prevented increases in serum markers of type III and IV collagen synthesis as well as accumulation of the collagens, laminin and fibronectin in the liver [4].Toxicity: Malotilate cytotoxicity to PBMCs, assessed by trypan blue dye exclusion and lactate dehydrogenase (LDH) release into the culture media, was found to be markedly increased by the addition of the NADPH generating system, indicating that metabolites play a significant role in toxicity [5].
LY 178002 is a potent inhibitor of 5-lipoxygenase, phospholipase A2, with IC50 of 0.6 μM for 5-1ipoxygenase, inhibits cellular production of LTB4 by human polymorphonuclear leukocytes, and shows relatively weak inhibition on cyclooxygenase.
4',5-Dihydroxyflavone is a soybean LOX-1 and yeast α-Glucosidase inhibitor, with an Ki of 102.6 μM for soybean LOX-1 and an IC50 of 66 μM for yeast α-glucosidase.
Phenidone, an orally active dual inhibitor of cyclooxygenase (COX) and lipoxygenase (LOX), ameliorates rat paralysis in experimental autoimmune encephalomyelitis. Phenidone is a potent hypotensive agent in the spontaneously hypertensive rat[1][2]. Phenidone is used as a photographic developer[3].
Isothymusin is a potent anti-oxidant agent. Isothymusin shows radical scavenging activities. Isothymusin shows anti-proliferative activities in cancer cell lines. Isothymusin inhibited the enzymes associated with the promotion stage of cancer, including cycloxygenase- 2 and lipoxygenase-5[1][2].
COX/5-LO-IN-1 is an inhibitor of cylooxygenase and 5-lipoxygenase, used for the research of inflammatory and allergic disease states.
Lycopodine, a pharmacologically important bioactive component derived from Lycopodium clavatumspores, triggers apoptosis by modulating 5-lipoxygenase, and depolarizing mitochondrial membrane potential in refractory prostate cancer cells without modulating p53 activity[1]. Lycopodine inhibits proliferation of HeLa cells through induction of apoptosis via caspase-3 activation[2].
Phenethyl ferulate is a major constituent ofQianghuo, shows inhibitory activity against cyclooxygenase (COX) and 5-lipoxygenase (5-LOX) with IC50 values of 4.35 μM and 5.75 μM, respectively[1].
Enazadrem is a 5-lipoxygenase inhibitor with antiinflammatory activities.
Methyl orsellinate is a phytotoxic compound with antifungal activities. Methyl orsellinate is a 5-lipoxygenase inhibitor with an IC50 value of 59.6 μM. Methyl orsellinate can be used for fungal infection research[1][2].
Atreleuton (ABT-761) is a selective, reversible, and orally bioavailable 5-Lipoxygenase (5-LO) inhibitor. Atreleuton (ABT-761) exhibits potent and selective inhibition of leukotriene formation[1][2][3].
2,5-Di-tert-butylhydroquinone (DTBHQ), the indirect food additive, regulates the activity of 5-lipoxygenase as well as the activity of COX-2 (IC50=1.8 and 14.1 μM for 5-LO and COX-2, respectively) [1].
AZD 4407 is a potent 5-lipoxygenase inhibitor.
Fluindione is a inhibitor of 5-lipoxygenase with the IC50 of 15 μM. Fluindione has antiinflammatory activity[1].
FPL 62064 is a potent 5-lipoxygenase (5-LOX) and COX dual inhibitor, with IC50 values of 3.5 μM and 3.1 μM for RBL-1 cytosolic 5-lipoxygenase and prostaglandin synthetase (cyclooxygenase), respectively. FPL 62064 has potent anti-inflammatory activity[1][2].
A-69412 is a reversible, specific inhibitor of the hydrophilic 5-lipoxygenase (5-LO).