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RESEARCH PRODUCT
Identification of avarol derivatives as potential antipsoriatic drugs using an in vitro model for keratinocyte growth and differentiation.
Diana OlthuisSalvatore De RosaMaria AmigóJoost SchalkwijkMaría Carmen TerencioEvert N. LammeMiguel Payásubject
KeratinocytesDrug Evaluation PreclinicalAntineoplastic AgentsEnzyme-Linked Immunosorbent AssayIn Vitro TechniquesBiologyGeneral Biochemistry Genetics and Molecular BiologyDownregulation and upregulationTranslational research [ONCOL 3]DysideaGene expressionDithranolmedicineAnimalsHumansPsoriasisRNA MessengerGeneral Pharmacology Toxicology and PharmaceuticsCells CulturedCell ProliferationChronic inflammation and autoimmunity [UMCN 4.2]Messenger RNATumor Necrosis Factor-alphaCell growthInterleukin-8Membrane ProteinsCell DifferentiationGeneral MedicineMolecular biologyElafinPathogenesis and modulation of inflammation [N4i 1]medicine.anatomical_structureMechanism of actionCyclooxygenase 2KeratinsClinical Pharmacology and physiology [CTR 2]medicine.symptomKeratinocyteSesquiterpenesInfection and autoimmunity [NCMLS 1]Elafinmedicine.drugdescription
Contains fulltext : 49512schalkwijk.pdf (Publisher’s version ) (Closed access) Avarol, a marine sesquiterpenoid hydroquinone, and 14 avarol derivatives have shown interesting anti-inflammatory properties in previous studies. In this study, avarol and derivatives were evaluated in high-throughput keratinocyte culture models using cytokeratin 10 and SKALP/Elafin expression as markers for respectively normal and psoriatic differentiation. Avarol and five of its derivatives (5, 10, 13, 14 and 15) were selected for further study. Only 10, 13, 14 and 15 were able to inhibit keratinocyte cell growth. Changes in expression levels of 22 genes were assessed by quantitative real time PCR (qPCR). From these genes, TNFalpha mRNA levels showed the strongest changes. For compound 13, 15 and dithranol (used as a model antipsoriatic drug), a dose-dependent downregulation of TNFalpha mRNA was found. The changes in TNFalpha mRNA were confirmed at the protein level for compound 13. Additionally, this compound was able to reduce also IL-8 and COX-2 mRNA levels and this effect was correlated with a reduction in COX-2 protein expression. The mechanism of action of this compound involves at least the inhibition of NF-kappaB-DNA binding activity. In conclusion, our high-throughput screening models in combination with quantitative assessment of changes in gene expression profiles identified the avarol derivative 13, a benzylamine derivative of avarol at the 4' position of benzoquinone ring, as an interesting anti-psoriatic drug candidate that inhibits keratinocyte cell growth and TNFalpha and COX-2 expression.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2006-01-01 |