MedChemExpress - Model Lintitript -136381-85-6

Lintitript (SR 27897) is a highly potent, selective, orally active, competitive and non-peptide cholecystokinin (CCK1) receptor antagonist with an EC50 of 6 nM and a Ki of 0.2 nM. Lintitript displays > 33-fold selectivity more selective for CCK1 than CCK2 receptors (EC50 value of 200 nM). Lintitript increases plasma concentration of leptin and food intake as well as plasma concentration of insulin[1][2][3].

Lintitript

MCE China：Lintitript

Brand：MedChemExpress (MCE)

Cat. No.HY-101764

CAS：136381-85-6

Synonyms：SR 27897

Purity：99.0%

Storage：Powder -20°C 3 years 4°C 2 years In solvent -80°C 6 months -20°C 1 month

Shipping：Room temperature in continental US; may vary elsewhere.

Description：Lintitript (SR 27897) is a highly potent, selective, orally active, competitive and non-peptide cholecystokinin (CCK1) receptor antagonist with an EC50 of 6 nM and a Ki of 0.2 nM. Lintitript displays > 33-fold selectivity more selective for CCK1 than CCK2 receptors (EC50 value of 200 nM). Lintitript increases plasma concentration of leptin and food intake as well as plasma concentration of insulin.

In Vitro：In vitro, Lintitript (SR 27897) is a competitive antagonist of cholecystokinin (CCK)-stimulated amylase release in isolated rat pancreatic acini (pA2 = 7.50) and of CCK-induced guinea pig gall bladder contractions (pA2 = 9.57)[1]. Lintitript produces concentration dependent inhibition of [125I]CCK binding to CCK1 receptor sites in the rat pancreas (IC50 value of 0.58 nM) and also to CCK 2 sites in the guinea pig cortex (IC2 value of 479 nM). Lintitript inhibits [125I]gastrin binding to gastrin receptors. Lintitript (0.5 nM) increases the dissociation constant of CCK for the CCK A receptor (Kd = 1.8 to 7.2 nM) without modifying the maximum number of receptors (Bmax = 1800 to 1770 fmol/mg)[1].

In Vivo：Lintitript (SR 27897; 1 mg/kg, i.v.) completely reverses the CCK-induced amylase secretion. Lintitript also inhibits CCK-induced gastric and gallbladder emptying in mice (ED50s = 3 and 72 μg/kg, respectively). Lintitript is also very active (ED50 = 27 μg/kg p.o.) in the gall bladder emptying protocol with egg yolk as an inducer of endogenous CCK release[1].

IC50 & Target：CCKAR

References：

[1]. Gully D, et al. Peripheral biological activity of SR 27897: a new potent non-peptide antagonist of CCKA receptors. Eur J Pharmacol. 1993 Feb 23;232(1):13-9. [Content Brief]

[2]. Gouldson P, et al. Contrasting roles of leu(356) in the human CCK(1) receptor for antagonist SR 27897 and agonist SR 146131 binding. Eur J Pharmacol. 1999 Nov 3;383(3):339-46. [Content Brief]

[3]. Cano V, et al. Regulation of leptin distribution between plasma and cerebrospinal fluid by cholecystokinin receptors. Br J Pharmacol. 2003 Oct;140(4):647-52. [Content Brief]

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MedChemExpress - Model Lintitript -136381-85-6

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Lintitript