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Bicarbonate-Triggered In Vitro Capacitation of Boar Spermatozoa Conveys an Increased Relative Abundance of the Canonical Transient Receptor Potential Cation (TRPC) Channels 3, 4, 6 and 7 and of CatSper-γ Subunit mRNA Transcripts

SIMPLE SUMMARY: The detection of sub-fertile boars has been a difficult task, and despite their prevalence being low, its impact is very significant because it implies economic drawbacks for artificial insemination (AI) centers and farms. Unfortunately, some crucial reproductive processes fall beyon...

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Autores principales: Lacalle, Estíbaliz, Consuegra, César, Martínez, Cristina A., Hidalgo, Manuel, Dorado, Jesús, Martínez-Pastor, Felipe, Álvarez-Rodríguez, Manuel, Rodríguez-Martínez, Heriberto
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
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Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9031844/
https://www.ncbi.nlm.nih.gov/pubmed/35454259
http://dx.doi.org/10.3390/ani12081012
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author Lacalle, Estíbaliz
Consuegra, César
Martínez, Cristina A.
Hidalgo, Manuel
Dorado, Jesús
Martínez-Pastor, Felipe
Álvarez-Rodríguez, Manuel
Rodríguez-Martínez, Heriberto
author_facet Lacalle, Estíbaliz
Consuegra, César
Martínez, Cristina A.
Hidalgo, Manuel
Dorado, Jesús
Martínez-Pastor, Felipe
Álvarez-Rodríguez, Manuel
Rodríguez-Martínez, Heriberto
author_sort Lacalle, Estíbaliz
collection PubMed
description SIMPLE SUMMARY: The detection of sub-fertile boars has been a difficult task, and despite their prevalence being low, its impact is very significant because it implies economic drawbacks for artificial insemination (AI) centers and farms. Unfortunately, some crucial reproductive processes fall beyond the routine analysis performed in the porcine model, such as sperm capacitation, which is a necessary event for fertilization. A synergistic action of bicarbonate (HCO(3)(−)) with calcium (Ca(2+)) is needed to achieve capacitation. The transport of Ca(2+) is mediated by CatSper channels and Canonical Transient Potential Channels (TRPC). We quantified mRNA transcripts of different subunits of CatSper (β, γ and δ) and TRPC (1, 3, 4, 6 and 7) before and after in vitro capacitation by HCO(3)(−) ions. Our results showed that in vitro capacitation using HCO(3)(−) increases the relative abundance of mRNA transcripts of almost all subunits of Ca(2+) channels, except CatSper-δ and TRPC1, which were significantly reduced. More studies are needed to elucidate the specific roles of the TRPC channels at a physiological and functional level. ABSTRACT: Sperm capacitation is a stepwise complex biochemical process towards fertilization. It includes a crucial early calcium (Ca(2+)) transport mediated by CatSper channels and Canonical Transient Potential Channels (TRPC). We studied the relative abundance of mRNA transcripts changes of the CatSper β, γ and δ subunits and TRPC-channels 1, 3, 4, 6 and 7 in pig spermatozoa, after triggering in vitro capacitation by bicarbonate ions at levels present in vivo at the fertilization site. For this purpose, we analyzedfive5 ejaculate pools (from three fertile adult boars) before (control-fresh samples) and after in vitro exposure to capacitation conditions (37 mM NaHCO(3), 2.25 mM CaCl(2), 2 mM caffeine, 0.5% bovine serum albumin and 310 mM lactose) at 38 °C, 5% CO(2) for 30 min. In vitro capacitation using bicarbonate elicits an increase in the relative abundance of mRNA transcripts of almost all studied Ca(2+) channels, except CatSper-δ and TRPC1 (significantly reduced). These findings open new avenues of research to identify the specific role of each channel in boar sperm capacitation and elucidate the physiological meaning of the changes on sperm mRNA cargo.
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spelling pubmed-90318442022-04-23 Bicarbonate-Triggered In Vitro Capacitation of Boar Spermatozoa Conveys an Increased Relative Abundance of the Canonical Transient Receptor Potential Cation (TRPC) Channels 3, 4, 6 and 7 and of CatSper-γ Subunit mRNA Transcripts Lacalle, Estíbaliz Consuegra, César Martínez, Cristina A. Hidalgo, Manuel Dorado, Jesús Martínez-Pastor, Felipe Álvarez-Rodríguez, Manuel Rodríguez-Martínez, Heriberto Animals (Basel) Article SIMPLE SUMMARY: The detection of sub-fertile boars has been a difficult task, and despite their prevalence being low, its impact is very significant because it implies economic drawbacks for artificial insemination (AI) centers and farms. Unfortunately, some crucial reproductive processes fall beyond the routine analysis performed in the porcine model, such as sperm capacitation, which is a necessary event for fertilization. A synergistic action of bicarbonate (HCO(3)(−)) with calcium (Ca(2+)) is needed to achieve capacitation. The transport of Ca(2+) is mediated by CatSper channels and Canonical Transient Potential Channels (TRPC). We quantified mRNA transcripts of different subunits of CatSper (β, γ and δ) and TRPC (1, 3, 4, 6 and 7) before and after in vitro capacitation by HCO(3)(−) ions. Our results showed that in vitro capacitation using HCO(3)(−) increases the relative abundance of mRNA transcripts of almost all subunits of Ca(2+) channels, except CatSper-δ and TRPC1, which were significantly reduced. More studies are needed to elucidate the specific roles of the TRPC channels at a physiological and functional level. ABSTRACT: Sperm capacitation is a stepwise complex biochemical process towards fertilization. It includes a crucial early calcium (Ca(2+)) transport mediated by CatSper channels and Canonical Transient Potential Channels (TRPC). We studied the relative abundance of mRNA transcripts changes of the CatSper β, γ and δ subunits and TRPC-channels 1, 3, 4, 6 and 7 in pig spermatozoa, after triggering in vitro capacitation by bicarbonate ions at levels present in vivo at the fertilization site. For this purpose, we analyzedfive5 ejaculate pools (from three fertile adult boars) before (control-fresh samples) and after in vitro exposure to capacitation conditions (37 mM NaHCO(3), 2.25 mM CaCl(2), 2 mM caffeine, 0.5% bovine serum albumin and 310 mM lactose) at 38 °C, 5% CO(2) for 30 min. In vitro capacitation using bicarbonate elicits an increase in the relative abundance of mRNA transcripts of almost all studied Ca(2+) channels, except CatSper-δ and TRPC1 (significantly reduced). These findings open new avenues of research to identify the specific role of each channel in boar sperm capacitation and elucidate the physiological meaning of the changes on sperm mRNA cargo. MDPI 2022-04-13 /pmc/articles/PMC9031844/ /pubmed/35454259 http://dx.doi.org/10.3390/ani12081012 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Lacalle, Estíbaliz
Consuegra, César
Martínez, Cristina A.
Hidalgo, Manuel
Dorado, Jesús
Martínez-Pastor, Felipe
Álvarez-Rodríguez, Manuel
Rodríguez-Martínez, Heriberto
Bicarbonate-Triggered In Vitro Capacitation of Boar Spermatozoa Conveys an Increased Relative Abundance of the Canonical Transient Receptor Potential Cation (TRPC) Channels 3, 4, 6 and 7 and of CatSper-γ Subunit mRNA Transcripts
title Bicarbonate-Triggered In Vitro Capacitation of Boar Spermatozoa Conveys an Increased Relative Abundance of the Canonical Transient Receptor Potential Cation (TRPC) Channels 3, 4, 6 and 7 and of CatSper-γ Subunit mRNA Transcripts
title_full Bicarbonate-Triggered In Vitro Capacitation of Boar Spermatozoa Conveys an Increased Relative Abundance of the Canonical Transient Receptor Potential Cation (TRPC) Channels 3, 4, 6 and 7 and of CatSper-γ Subunit mRNA Transcripts
title_fullStr Bicarbonate-Triggered In Vitro Capacitation of Boar Spermatozoa Conveys an Increased Relative Abundance of the Canonical Transient Receptor Potential Cation (TRPC) Channels 3, 4, 6 and 7 and of CatSper-γ Subunit mRNA Transcripts
title_full_unstemmed Bicarbonate-Triggered In Vitro Capacitation of Boar Spermatozoa Conveys an Increased Relative Abundance of the Canonical Transient Receptor Potential Cation (TRPC) Channels 3, 4, 6 and 7 and of CatSper-γ Subunit mRNA Transcripts
title_short Bicarbonate-Triggered In Vitro Capacitation of Boar Spermatozoa Conveys an Increased Relative Abundance of the Canonical Transient Receptor Potential Cation (TRPC) Channels 3, 4, 6 and 7 and of CatSper-γ Subunit mRNA Transcripts
title_sort bicarbonate-triggered in vitro capacitation of boar spermatozoa conveys an increased relative abundance of the canonical transient receptor potential cation (trpc) channels 3, 4, 6 and 7 and of catsper-γ subunit mrna transcripts
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9031844/
https://www.ncbi.nlm.nih.gov/pubmed/35454259
http://dx.doi.org/10.3390/ani12081012
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