| In Vitro | In vitro activity: Perphenazine is a relatively high potency phenothiazine that blocks dopamine 2 (D2) receptors predominantly but also may possess antagonist actions at histamine 1 (H1) and cholinergic M1 and alpha 1 adrenergic receptors in the vomiting center leading to reduced nausea and vomiting. Perphenazine induces cell death and mitochondrial damage, also caspase-3 activation and a decrease in cellular ATP level. The cell death induced by perphenazine is partially suppressed by antioxidant but not by pan-caspase inhibitor. Perphenazine in concentration range from 0.0001 to 0.01 μM did not have any significant effect on melanocytes viability. The treatment of cells with the drug in higher concentrations results in the loss in cell viability in a concentration-dependent manner. The value of EC50 for perphenazine is 2.76 μM. Perphenazine in concentrations of 1.0 and 3.0 μM also decreases the tyrosinase activity, as well as melanin content.
Kinase Assay: Perphenazine is a typical antipsychotic drug, inhibits 5-HT2A receptor (5-HT2A), Alpha-1A adrenergic receptor (α1A), Dopamine receptor D2/D3, D2L receptor, and Histamine H1 receptor (H1) with Ki of 5.6, 10, 0.765/0.13, 3.4, and 8 nM. IC50 value: 5.6 nM (Ki, 5-HT2A) 10 nM (Ki,α1A), 0.765/0.13 nM (Ki,D2/D3), 3.4 nM (Ki,D2L receptor), 8 nM (Ki,H1).
Cell Assay: cells are plated on 96-well plates and treated with drugs for various time periods. Then the cells are incubated with MTS assay reagent for 1 hr. The plates are then read at 490 nm using a microplate reader. |
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