MULTISCREEN™ STABLE CELL LINES
HUMAN RECOMBINANT CysLT1 RECEPTOR
1 vial (2 x 106) frozen cells
Sigma Freezing Medium (C-6164)
Expression vector containing full-length human CYSLTR1 cDNA (GenBank Accession Number NM_006639) with FLAG tag at N- terminus
Liquid nitrogen upon receiving
Propagation Medium: DMEM, 10% FBS, 1 μg/mL puromycin
Stable after minimum two months continuous growth.
Background: CysLTR1 (Cysteinyl leukotriene receptor 1) is also known as LTD4 receptor (leukotriene D4 receptor), HG55 or HMTMF81. It is a receptor for cysteinyl leukotrienes and has highest affinity to leukotriene D4 (LTD4). The receptor mediates contraction and proliferation of smooth muscle, edema, eosinophil migration and damage to the mucus layer in the lung caused by LTD4. Several antagonists, such as montelukast (Singulair), zafirlukast (Accolate) and pranlukast (Onon), are used in the treatment of asthma.
Application: Functional assays
Figure 1. Dose-dependent calcium flux upon treatment with ligand, measured with MultiscreenTM Calcium 1.0 No Wash Assay Kit (Multispan MSCA01).
Crowther and Rees (2000) Current treatment of asthma–focus on leukotrienes. Expert Opin Pharmacother 1:1021-1040.
Tomari et al. (2003) Pranlukast, a cysteinyl leukotriene receptor 1 antagonist, attenuates allergen-specific tumour necrosis factor alpha production and nuclear factor kappa B nuclear translocation in peripheral blood monocytes from atopic asthmatics. Clin Exp Allergy 33:795-801.