Method for screening cysteinyl leukotriene receptor 2 antagonists and preliminary screening of compounds.
- Author:
Bei-Lei CAI
1
,
2
;
Xue-Qin HUANG
;
Xiao-Wu DONG
;
San-Hua FANG
;
Yun-Bi LU
;
Wei-Ping ZHANG
;
Yong-Zhou HU
;
Jian-Gen SHEN
;
Er-Qing WEI
Author Information
- Publication Type:Journal Article
- MeSH: Animals; Brain Neoplasms; pathology; Cell Line, Tumor; Drug Evaluation, Preclinical; methods; Glioma; pathology; Leukotriene Antagonists; isolation & purification; Leukotriene D4; metabolism; pharmacology; Rats; Receptors, Leukotriene; chemistry
- From: Journal of Zhejiang University. Medical sciences 2009;38(6):598-604
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVETo establish a method for screening cysteinyl leukotriene receptor 2 (CysLT(2)) antagonists and to preliminarily screen a series of synthetic compounds.
METHODSRat glioma cell line (C6 cells) highly expressing CysLT(2) receptor was used. Intracellular calcium concentration was measured after stimulation with the agonist LTD(4),which was used to screen compounds with antagonist activity for CysLT(2) receptor. Bay u9773, a CysLT1/CysLT(2) receptor non-selective antagonist, and AP-100984, a CysLT(2) receptor antagonist, were used as control.
RESULTPT-PCR showed a higher expression of CysLT(2) receptor in C6 cells. LTD(4) at 1 mumol/L significantly increased intracellular calcium in C6 cells; the maximal effect was about 37.5% of ATP, a positive stimulus.LTD(4)-induced increase of intracellular calcium was blocked by CysLT(2) receptor antagonists, but not by CysLT(1) receptor antagonists. Among the synthetic compounds, D(XW-)1,2,13,23,29 and 30 inhibited LTD(4)-induced increase of intracellular calcium.
CONCLUSIONLTD(4)-induced change in intracellular calcium in C6 cells can be used as a screening method for CysLT(2) receptor antagonists. The compounds, D(XW-)1,2,13,23,29 and 30, possess antagonist activity for CysLT(2) receptor.
