TRPM8, a versatile channel in human sperm
| Autor: | Fernando Larrea, Claudia L. Treviño, Carmen Beltrán, Laura E. Castellano, Alberto Darszon, Carmen J. Serrano, Gerardo A. De Blas, Mayel Chirinos, Ana Y. Ocampo, Enrique O. Hernández-González |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2009 |
| Předmět: |
Male
Pyridines Acrosome reaction TRPM Cation Channels lcsh:Medicine Biology Models Biological Cell Biology/Cell Signaling 03 medical and health sciences Transient receptor potential channel chemistry.chemical_compound 0302 clinical medicine Capacitation TRPM TRPM8 Humans Biophysics/Cell Signaling and Trafficking Structures Fluorescent Antibody Technique Indirect lcsh:Science Sperm motility Progesterone 030304 developmental biology 0303 health sciences Multidisciplinary Reverse Transcriptase Polymerase Chain Reaction urogenital system Acrosome Reaction Chemotaxis lcsh:R Sperm Spermatozoa Cell biology Physiology/Reproductive Physiology Biochemistry chemistry Pyrazines Physiology/Cell Signaling Sperm Motility Calcium lcsh:Q Capsaicin Capsazepine 030217 neurology & neurosurgery Research Article Signal Transduction |
| Zdroj: | PLoS ONE, Vol 4, Iss 6, p e6095 (2009) PLoS ONE |
| ISSN: | 1932-6203 |
| Popis: | BACKGROUND:The transient receptor potential channel (TRP) family includes more than 30 proteins; they participate in various Ca(2+) dependent processes. TRPs are functionally diverse involving thermal, chemical and mechanical transducers which modulate the concentration of intracellular Ca(2+) ([Ca(2+)]i). Ca(2+) triggers and/or regulates principal sperm functions during fertilization such as motility, capacitation and the acrosome reaction. Nevertheless, the presence of the TRPM subfamily in sperm has not been explored. PRINCIPAL FINDINGS:Here we document with RT-PCR, western blot and immunocitochemistry analysis the presence of TRPM8 in human sperm. We also examined the participation of this channel in sperm function using specific agonists (menthol and temperature) and antagonists (BCTC and capsazepine). Computer-aided sperm analysis revealed that menthol did not significantly alter human sperm motility. In contrast, menthol induced the acrosome reaction in human sperm. This induction was inhibited about 70% by capsazepine (20 microM) and 80% by BCTC (1.6 microM). Activation of TRPM8 either by temperature or menthol induced [Ca(2+)]i increases in human sperm measured by fluorescence in populations or individual sperm cells, effect that was also inhibited by capsazepine (20 microM) and BCTC (1.6 microM). However, the progesterone and ZP3-induced acrosome reaction was not inhibited by capsazepine or BCTC, suggesting that TRPM8 activation triggers this process by a different signaling pathway. CONCLUSIONS:This is the first report dealing with the presence of a thermo sensitive channel (TRPM8) in human sperm. This channel could be involved in cell signaling events such as thermotaxis or chemotaxis. |
| Databáze: | OpenAIRE |
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