KYN-101 (KYN101) is a potent, selective synthetic antagonist of aryl hydrocarbon receptor (AHR) with IC50 of 22 nM in human HepG2 DRE-luciferase reporter assay and 23 nM in murine Hepa1 Cyp-luc assay.KYN-101 reverses IDO/TDO-mediated tumor progression and improves the efficacy of PD-1 blockade in B16 IDO tumor-bearing mice, as well as CT26 colorectal cancer model expressing endogenous high levels of IDO.
L-Kynurenine-d4-1 is deuterium labeled L-Kynurenine. L-Kynurenine is a metabolite of the amino acid L-tryptophan. L-Kynurenine is an aryl hydrocarbon receptor agonist.
AHR antagonist 4 is a 2-heteroaryl-3-oxo-2,3-dihydropyridazine-4-carboxamide compound and a potent aryl hydrocarbon receptor (AHR) antagonist extracted from patent WO2018146010A1, example 293, has an IC50 of 82.2 nM. AHR antagonist 4 has anti-cancer effects[1].
Indole-3-carbinol suppresses NF-κB activity and also is an Aryl hydrocarbon receptor (AhR) agonist.
Benzyl butyl phthalate, a member of phthalic acid esters (PAEs), can trigger the migration and invasion of hemangioma (HA) cells via upregulation of Zeb1. Benzyl butyl phthalate activates aryl hydrocarbon receptor (AhR) in breast cancer cells to stimulate SPHK1/S1P/S1PR3 signaling and enhances formation of metastasis-initiating breast cancer stem cells (BCSCs)[1][2][3].
GNF351 is a full aryl hydrocarbon receptor (AHR) antagonist. GNF351 competes with a photoaffinity AHR ligand for binding to the AHR with an IC50 of 62 nM. GNF351 is minimal toxicity in mouse or human keratinocytes[1].
Cardamonin (Cardamomin), a natural flavone isolated from Alpinia katsumadai Hayata, acts as an aryl hydrocarbon receptor (AhR) activator. Cardamonin alleviates inflammatory bowel disease by the inhibition of NLRP3 inflammasome activation via an AhR/Nrf2/NQO1 pathway[1].
5F-203 (NSC-703786) is a cytotoxic molecule that forms DNA adducts and cell cycle arrest. 5F-203 induces aryl hydrocarbon receptor (AhR) signaling and elevates expression of CYP1A1. 5F-203 also increases the levels of reactive oxygen species as well as activates JNK, ERK, and p38[1][2][3].
AHR antagonist 3 is a 2-heteroaryl-3-oxo-2,3-dihydropyridazine-4-carboxamide compound and an aryl hydrocarbon receptor (AHR) antagonist extracted from patent WO2018146010A1, example 192, has an IC50 of 341 nM. AHR antagonist 3 has anti-cancer effects[1].
Brevifolincarboxylic acid is extracted from Polygonum capitatum[1], has inhibitory effect on the aryl hydrocarbon receptor (AhR)[2]. Brevifolincarboxylic acid is an α-glucosidase inhibitor with an IC50 of 323.46 μM[3].
3',4'-Dimethoxyflavone is a lipophilic flavone, can be isolated from the leaves of Primula veris. 3',4'-Dimethoxyflavone can reduce the synthesis and accumulation of PARP and protect cortical neurones against cell death induced by Parthanatos. 3',4'-Dimethoxyflavone is also an aryl hydrocarbon receptor antagonist in human breast cancer cells. 3',4'-Dimethoxyflavone can promote the proliferation of human hematopoietic stem cells. 3',4'-Dimethoxyflavone has various biological activities, including antioxidant, anti-cancer, anti-inflammatory, anti-atherogenic, hypolipidaemic, and neuroprotective or neurotrophic effects[1][2][3][4].
PDM2 is a selective, high-affinity aryl hydrocarbon receptor (AhR) antagonist with an Ki of 1.2±0.4 nM.
Skatole is produced by intestinal bacteria, regulates intestinal epithelial cellular functions through activating aryl hydrocarbon receptors and p38[1].
AHR antagonist 5, a potent and orally active aryl hydrocarbon receptor (AHR) antagonist extracted from patent WO2018195397, example 39, has an IC50 of < 0.5 µΜ. AHR antagonist 5 significantly inhibits tumor growth combined with checkpoint inhibitor anti-PD-1[1].
DiMNF (3',4'-Dimethoxy-αNF) is a selective aryl hydrocarbon receptor (AHR) modulator. DiMNF is a competitive AHR ligand (IC50 = 21 nM) with apparent antagonistic activity. DiMNF can be used as an anti-inflammatory agent[1].
β-Naphthoflavone is a non-carcinogenic AhR agonist as a positive control for the induction of AhR transcriptional activity[1]. β-Naphthoflavone inhibits hydrogen peroxide-induced apoptosis[2].
AHR antagonist 1 is an aryl hydrocarbon receptor (AHR) antagonist extracted from patent WO2017202816A1, example 23, has an IC50 of 39.9 nM in human cell line[1].
Indolokine A5, a catabolite of L-cysteine, is a potent AhR agonist[1].