10-Cl-BBQ is an orally bioavailable, non-toxic benzimidazoisoquinoline derivative that acts as an aryl hydrocarbon receptor (AhR) agonist via directly binding to AhR (IC50 = 2.6 nM in a competitive binding assay) and induces its nuclear translocation. 10-Cl-BBQ is shown to increase CD4+ T-cells that co-express CD25, CTLA-4 and ICOS, as well as several other genes associated with regulatory T cell (Treg) function in a graft versus host response model (GVH, C57BI/6 T cells injected into B6D2F1 host mice). 10-Cl-BBQ displays good pharmacokinetic profile in mice (t1/2 = 2 h, Cmax = 21.5 μg/L, 10 mg/kg, i.p.). Also shown to prevent insulitis in a NOD T1D mouse model which is independent of Fox3 + Tregs (60 mg/kg, p.o, q.o.d.).
10-Cl-BBQ is an orally bioavailable, non-toxic benzimidazoisoquinoline derivative.
Journal of immunology (Baltimore, Md. : 1950), 196(1), 264-273 (2015-11-18)
Aryl hydrocarbon receptor (AhR) activation by high-affinity ligands mediates immunosuppression in association with increased regulatory T cells (Tregs), making this transcription factor an attractive therapeutic target for autoimmune diseases. We recently discovered 10-chloro-7H-benzimidazo[2,1-a]benzo[de]iso-quinolin-7-one (10-Cl-BBQ), a nanomolar affinity AhR ligand with
The aryl hydrocarbon receptor (AhR) is a ligand-activated transcription factor that plays multiple roles in regulation of immune and inflammatory responses. The ability of certain AhR ligands to induce regulatory T cells (Tregs) has generated interest in developing AhR ligands
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