Role of the Aryl Hydrocarbon Receptor (AhR) in Mediating the Effects of Coffee in the Colon was written by Chapkin, Robert S.;Davidson, Laurie A.;Park, Hyejin;Jin, Un-Ho;Fan, Yang-Yi;Cheng, Yating;Hensel, Martha E.;Landrock, Kerstin K.;Allred, Clinton;Menon, Rani;Klemashevich, Cory;Jayaraman, Arul;Safe, Stephen. And the article was included in Molecular Nutrition & Food Research in 2021.Related Products of 244-63-3 This article mentions the following:
This study investigates the mechanism of action and functional effects of coffee extracts in colonic cells, on intestinal stem cell growth, and inhibition of dextran sodium sulfate (DSS)-induced intestinal barrier damage in mice. Aqueous coffee extracts induced Ah receptor (AhR) -responsive CYP1A1, CYP1B1, and UGT1A1 gene expression in colon-derived Caco2 and YAMC cells. Tissue-specific AhR knockout (AhRf/f x Lgr5-GFP-CreERT2 x Villin-Cre), wild-type (Lgr5-CreERT2 x Villin-Cre) mice are sources of stem cell enriched organoids and both coffee extracts and norharman, an AhR-active component of these extracts inhibited stem cell growth. Coffee extracts also inhibit DSS-induced damage to intestinal barrier function and DSS-induced mucosal inflammatory genes such as IL-6 and TGF-尾1 in wild-type (AhR+/+) but not AhR-/- mice. In contrast, coffee does not exhibit protective effects in intestinal-specific AhR knockout mice. Coffee extracts also enhanced overall formation of AhR-active microbial metabolites. In colon-derived cells and in the mouse intestine, coffee induced several AhR-dependent responses including gene expression, inhibition of intestinal stem cell-enriched organoid growth, and inhibition of DSS-induced intestinal barrier damage. We conclude that the anti-inflammatory effects of coffee in the intestine are due, in part, to activation of AhR signaling. In the experiment, the researchers used many compounds, for example, 9H-Pyrido[3,4-b]indole (cas: 244-63-3Related Products of 244-63-3).
9H-Pyrido[3,4-b]indole (cas: 244-63-3) belongs to indole derivatives. Indole, first isolated in 1866, and it is commonly synthesized from phenylhydrazine and pyruvic acid, although several other procedures have been discovered.Indole was synthesized in moderate yield via an o-naphthoquinone catalyzed tandem cross-coupling of substituted aniline and benzylamine under aerobic oxidation conditions.Related Products of 244-63-3
Referemce:
Indole alkaloid derivatives as building blocks of natural products from聽Bacillus thuringiensis聽and聽Bacillus velezensis聽and their antibacterial and antifungal activity study,
Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles