Expression of the transient receptor potential vanilloid 1 (TRPV1) in LNCaP and PC-3 prostate cancer cells and in human prostate tissue
| Autor: | Juan C. Prieto, Nuria Olea, Beatriz Collado, María J. Carmena, Sophie Malagarie-Cazenave, María G. Sánchez, Ana Maria Sanchez, Inés Díaz-Laviada |
|---|---|
| Rok vydání: | 2005 |
| Předmět: |
Male
medicine.medical_specialty Blotting Western Resiniferatoxin TRPV1 Gene Expression TRPV Cation Channels Arachidonic Acids Binding Competitive Ion Channels Vanilloids Iodine Radioisotopes Radioligand Assay chemistry.chemical_compound Prostate cancer Cell Line Tumor Internal medicine LNCaP medicine Humans Receptor Pharmacology Dose-Response Relationship Drug Reverse Transcriptase Polymerase Chain Reaction Chemistry musculoskeletal neural and ocular physiology Prostate Prostatic Neoplasms medicine.disease Endocrinology nervous system Capsaicin Cancer research Calcium lipids (amino acids peptides and proteins) Diterpenes Capsazepine |
| Zdroj: | European Journal of Pharmacology. 515:20-27 |
| ISSN: | 0014-2999 |
| DOI: | 10.1016/j.ejphar.2005.04.010 |
| Popis: | Vanilloid receptor subtype-1 (TRPV1), the founding member of the vanilloid receptor-like transient receptor potential channel family, is a non-selective cation channel that responds to noxious stimuli such as low pH, painful heat and irritants. In the present study, we show, as means of reverse transcriptase-polymerase chain reaction and Western blot analysis, that the vanilloid TRPV1 receptor is expressed in the prostate epithelial cell lines PC-3 and LNCaP as well as in human prostate tissue. The kinetic parameters inferred from [(125)I]-resiniferatoxin binding were in concordance with data of TRPV1 receptors expressed in other tissues. The contribution of the endogenously expressed TRPV1 channel to intracellular calcium concentration increase in the prostate cells was studied by measuring changes in Fura-2 fluorescence by fluorescence microscopy. Addition of capsaicin, (R)-methanandamide and resiniferatoxin to prostate cells induced a dose-dependent increase in the intracellular calcium concentration that was reversed by the vanilloid TRPV1 receptor antagonist capsazepine. These results indicate that the vanilloid TRPV1 receptor is expressed and functionally active in human prostate cells. |
| Databáze: | OpenAIRE |
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