» Articles » PMID: 31389695

4,8-Dimethylcoumarin Inhibitors of Intestinal Anion Exchanger Slc26a3 (Downregulated in Adenoma) for Anti-Absorptive Therapy of Constipation

Overview
Journal J Med Chem
Specialty Chemistry
Date 2019 Aug 8
PMID 31389695
Citations 11
Authors
Affiliations
Soon will be listed here.
Abstract

The chloride/bicarbonate exchanger SLC26A3 (downregulated in adenoma) is expressed mainly in colonic epithelium, where it dehydrates the stool by facilitating the final step of chloride and fluid absorption. SLC26A3 inhibition has predicted efficacy in various types of constipation including that associated with cystic fibrosis. We previously identified, by high-throughput screening, 4,8-dimethylcoumarin inhibitors of murine slc26a3 with IC down to ∼150 nM. Here, we synthesized a focused library of forty-three 4,8-dimethylcoumarin analogues. Structure-activity studies revealed the requirement of 4,8-dimethylcoumarin-3-acetic acid for activity. The most potent inhibitors were produced by replacements at C7, including 3-iodo- () and 3-trifluoromethyl- (), with IC of 40 and 25 nM, respectively. Pharmacokinetics in mice showed predicted therapeutic concentrations of for >72 h following a single 10 mg/kg oral dose. at 10 mg/kg fully normalized stool water content in a loperamide-induced mouse model of constipation. The favorable inhibition potency, selectivity within the SLC26 family, and pharmacological properties of support its further preclinical development.

Citing Articles

DRA involvement in linaclotide-stimulated bicarbonate secretion during loss of CFTR function.

Sarthi J, Trumbull A, Abazari S, van Unen V, Chan J, Jiang Y JCI Insight. 2024; 9(14).

PMID: 38869953 PMC: 11383163. DOI: 10.1172/jci.insight.172364.


Substituted 4-methylcoumarin inhibitors of SLC26A3 (DRA) for treatment of constipation and hyperoxaluria.

Ahmadi M, de Souza Goncalves L, Verkman A, Cil O, Anderson M RSC Med Chem. 2024; 15(5):1731-1736.

PMID: 38784456 PMC: 11110725. DOI: 10.1039/d3md00644a.


Selective isoxazolopyrimidine PAT1 (SLC26A6) inhibitors for therapy of intestinal disorders.

Chu T, Karmakar J, Haggie P, Tan J, Master R, Ramaswamy K RSC Med Chem. 2023; 14(11):2342-2347.

PMID: 37974969 PMC: 10650448. DOI: 10.1039/d3md00302g.


SLC26 Anion Transporters.

Geertsma E, Oliver D Handb Exp Pharmacol. 2023; 283:319-360.

PMID: 37947907 DOI: 10.1007/164_2023_698.


Key role of down-regulated in adenoma () chloride/bicarbonate exchanger in linaclotide-stimulated intestinal bicarbonate secretion upon loss of CFTR function.

Sarthi J, Trumbull A, Abazari S, van Unen V, Chan J, Jiang Y bioRxiv. 2023; .

PMID: 37205513 PMC: 10187319. DOI: 10.1101/2023.05.05.539132.


References
1.
Byeon M, Westerman M, Maroulakou I, Henderson K, Suster S, Zhang X . The down-regulated in adenoma (DRA) gene encodes an intestine-specific membrane glycoprotein. Oncogene. 1996; 12(2):387-96. View

2.
Walker N, Simpson J, Yen P, Gill R, Rigsby E, Brazill J . Down-regulated in adenoma Cl/HCO3 exchanger couples with Na/H exchanger 3 for NaCl absorption in murine small intestine. Gastroenterology. 2008; 135(5):1645-1653.e3. PMC: 2673535. DOI: 10.1053/j.gastro.2008.07.083. View

3.
Ferroud D, Collard J, Klich M, Mauvais P, Lassaigne P, Bonnefoy A . Synthesis and biological evaluation of coumarincarboxylic acids as inhibitors of gyrase B. L-rhamnose as an effective substitute for L-noviose. Bioorg Med Chem Lett. 1999; 9(19):2881-6. DOI: 10.1016/s0960-894x(99)00493-x. View

4.
Kontogiorgis C, Detsi A, Hadjipavlou-Litina D . Coumarin-based drugs: a patent review (2008 -- present). Expert Opin Ther Pat. 2012; 22(4):437-54. DOI: 10.1517/13543776.2012.678835. View

5.
Gebauer M . Synthesis and structure-activity relationships of novel warfarin derivatives. Bioorg Med Chem. 2007; 15(6):2414-20. DOI: 10.1016/j.bmc.2007.01.014. View