Ah Receptor Inhibitors

Common Ah Receptor Inhibitors include, but are not limited to CH 223191 CAS 301326-22-7, 3',4'-Dimethoxyflavone CAS 4143-62-8, Phloretin CAS 60-82-2, Resveratrol CAS 501-36-0 and Curcumin CAS 458-37-7.

The aryl hydrocarbon receptor (AhR) is a ligand-activated transcription factor belonging to the basic helix-loop-helix (bHLH) family of proteins. Found within the cytoplasm in its inactive state, AhR binds to a variety of environmental toxins and endogenous ligands. Upon ligand binding, the AhR translocates to the nucleus, where it dimerizes with the aryl hydrocarbon receptor nuclear translocator (ARNT). This dimer then binds to specific DNA sequences called xenobiotic response elements (XREs), leading to the transcription of various target genes. One of the most well-known target genes is cytochrome P450 1A1 (CYP1A1), which plays a pivotal role in the metabolism and detoxification of numerous xenobiotics. The AhR pathway is evolutionarily conserved and has been implicated in a myriad of biological processes, including cell proliferation, differentiation, and immune response modulation.

Ah Receptor inhibitors are chemical compounds specifically designed to modulate the activity of the AhR. These inhibitors primarily function by preventing the binding of ligands to the AhR, thereby blocking its activation. Some Ah Receptor inhibitors might bind directly to the AhR's ligand-binding domain, rendering it inaccessible. Others might interfere with the AhR's ability to translocate to the nucleus or its subsequent dimerization with ARNT. Additionally, certain inhibitors might disrupt the downstream signaling events after the AhR's activation, such as the binding of the AhR-ARNT complex to XREs.