4-Nitrocatechol is a potent lipoxygenase inhibitor[1].
Licofelone (ML-3000) is a dual COX/5-lipoxygenase (5-LOX) inhibitor for the treatment of osteoarthritis. Licofelone (ML-3000) exerts anti-inflammatory and anti-proliferative effects. Licofelone (ML-3000) induces apoptosis, and decreases the production of proinflammatory leukotrienes and prostaglandins[1][2].
UCB-35440, a 5-lipoxygenase inhibitor and a histamine H1 receptor antagonist, is used potentially for the treatment of dermatitis.
BW 755C is a 5-lipoxygenase (5-LO) inhibitor with an IC50 of 5 μM. BW 755C also inhibits cyclooxygenase (COX) with IC50s of 0.65 and 1.2 μg/mL against COX-1 and COX-2, respectively[1][2].
Tebufelone (NE-11740), a nonsteroidal anti-inflammatory drug (NSAID), is a selective dual COX-2/5-lipoxygenase inhibitor. Tebufelone displays potent anti-inflammatory, analgesic and anti-pyretic properties[1][2].
Licofelone-d4 (ML-3000-d4) is the deuterium labeled Licofelone. Licofelone (ML-3000) is a dual COX/5-lipoxygenase (5-LOX) inhibitor (IC50=0.21/0.18 μM, respectively) for the treatment of osteoarthritis. Licofelone exerts anti-inflammatory and anti-proliferative effects. Licofelone induces apoptosis, and decreases the production of proinflammatory leukotrienes and prostaglandins[1][2][3].
Zileuton is a potent and selective inhibitor of 5-lipoxygenase with antiasthmatic properties.
h15-LOX-2 inhibitor 1 (Comp 105) is a human epithelial 15-lipoxygenase-2 (h15-LOX-2) inhibitor with IC50 of 0.34 μM[1].
(-)-Bornyl ferulate is a 5-lipoxygenase and COX inhibitor with IC50s of 10.4 μM and 12.0 μM, respectively[1].
Zileuton sodium is a potent and selective inhibitor of 5-lipoxygenase, exhibiting 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.
S-(+)-Marmesin is a natural coumarin, exhibiting COX-2/5-LOX dual inhibitory activity.
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.
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].
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).
S-2474 is an inhibitor of COX-2 and 5-lipoxygenase, with IC50s of 11 nM and 27 μM for COX-2 and COX-1 in human intact cells, and used as a nonsteroidal anti-inflammatory drug.
Patulitrin has scavenging effect in the DPPH radical. Patulitrin inhibits soybean lipoxygenase. Patulitrin also has antihypertensive effect. Patulitrin is an antioxidant flavonoid that can be isolated from Anthemis tinctoria[1][2].
ML351 is a potent and highly specific 15-LOX-1 inhibitor with an IC50 of 200 nM. ML351 shows excellent selectivity (>250-fold) versus the related isozymes, 5-LOX, platelet 12-LOX, 15-LOX-2, ovine COX-1, and human COX-2[1]. ML351 prevents dysglycemia and reduces β-cell oxidative stress in nonobese diabetic mouse model of T1D[2].