Identification of a HEK-293 cell line containing stably-transfected H3R gene and screening for novel non-imidazole histamine H3 receptor antagonists / 浙江大学学报·医学版
Journal of Zhejiang University. Medical sciences
; (6): 276-282, 2013.
Article
in Zh
| WPRIM
| ID: wpr-252633
Responsible library:
WPRO
ABSTRACT
<p><b>OBJECTIVE</b>To identify a HEK293 cell line containing stably-transfected H3R gene, and to screen the novel non-imidazole compounds with H3R antagonist activity.</p><p><b>METHODS</b>The expression of rat H3 receptor in cell line was detected by RT-PCR and Western blot. An elevation of intercellular cAMP concentration induced by forskolin was measured as the index for screening compounds with H3R antagonist activity.</p><p><b>RESULTS</b>The H3R-transfected HEK-293 cells stably expressed high level of rat H3 receptor mRNA and protein. Forskolin significantly increased intercellular cAMP concentration in the H3R-transfected HEK-293 cells. H3R agonist (R)-α-methylhistamine inhibited the forskolin-induced production of intercellular cAMP. H3R antagonist thioperamide and newly synthesized non-imidazole compounds XHA23 and XHA25 blocked (R)-α- methylhistamine reversal of forskolin-induced cAMP formation in a concentration-dependent manner, and the IC50 values were 3.62 μmol/L, 0.49 μmol/L, 0.14 μmol/L, respectively.</p><p><b>CONCLUSION</b>The H3R-transfected HEK293 cells stably express high level of rat H3 receptor, and can be used for screening compounds with H3R antagonist activity. The non-imidazole compounds XHA23 and XHA25 may have H3R antagonist activity.</p>
Full text:
1
Index:
WPRIM
Main subject:
Transfection
/
Receptors, Histamine H3
/
Drug Evaluation, Preclinical
/
Histamine H3 Antagonists
/
HEK293 Cells
/
Genetics
/
Metabolism
Type of study:
Diagnostic_studies
/
Screening_studies
Limits:
Animals
/
Humans
Language:
Zh
Journal:
Journal of Zhejiang University. Medical sciences
Year:
2013
Type:
Article