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Goto S, Takahashi T, Sato T, Toyama F, Takayama-Watanabe E, Watanabe A. A CatSper-Uninvolved Mechanism to Induce Forward Sperm Motility in the Internal Fertilization. Zoolog Sci 2024; 41:302-313. [PMID: 38809869 DOI: 10.2108/zs230046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2023] [Accepted: 01/04/2024] [Indexed: 05/31/2024]
Abstract
Sperm-specific cation channel (CatSper), sperm-specific Na + /H + exchanger (sNHE), and soluble adenylyl cyclase (sAC) are necessary in the signaling pathways to control sperm motility in many animals, whereas some animals have lost some or all of them. In the present study, we examined CatSper-uninvolved signaling for vigorous undulation of the undulating membrane that is attached to the sperm tail and gives thrust for forward motility in the internally fertilizing newt Cynops pyrrhogaster. Reverse-transcription PCR failed to detect sNHE in the newt sperm. However, the pH of sperm cytoplasm was raised under a high extracellular pH equivalent to that of egg jelly, where sperm motility is initiated by sperm motility-initiating substance (SMIS). Carbonic anhydrase XII/ XVI and SLC4A4/8 were suggested to be present in the sperm, and transported bicarbonates raised the intracellular pH. In egg jelly extract that contained SMIS, the anion transporter inhibitor DIDS weakened the undulation of the undulating membrane, while bicarbonates enhanced it. The cyclic AMP concentration was found to increase in sperm cytoplasm in the egg-jelly extract. An inhibitor of sAC (KH7) weakened the undulation of the undulating membrane, and dibutyryl cyclic AMP blocked the inhibitory effect. Inhibitor of transmembrane AC (DDA) limitedly affected the undulation. The undulation was weakened by an inhibitor of protein kinase A (H89), and by an inhibitor of transient receptor potential (TRP) channels (RN1747). Our results support the conclusions that the high pH of the egg jelly triggers a signaling pathway through sAC, PKA, and TRP channels, and coacts with SMIS to induce forward sperm motility.
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Affiliation(s)
- Sayuri Goto
- Faculty of Science, Biological Division, Yamagata University, Yamagata 990-8560, Japan
| | - Tomoe Takahashi
- Faculty of Science, Biological Division, Yamagata University, Yamagata 990-8560, Japan
| | - Tae Sato
- Faculty of Science, Biological Division, Yamagata University, Yamagata 990-8560, Japan
| | - Fubito Toyama
- Graduate School of Engineering, Utsunomiya University, Utsunomiya, Tochigi 321-8505, Japan
| | | | - Akihiko Watanabe
- Faculty of Science, Biological Division, Yamagata University, Yamagata 990-8560, Japan,
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Ramírez-López CJ, Barros E, Vidigal PM, Okano DS, Gomes LL, Carvalho RPR, de Castro AG, Baracat-Pereira MC, Guimarães SEF, Guimarães JD. Oxidative stress associated with proteomic and fatty acid profiles of sperm from Nellore bulls at rest†. Biol Reprod 2023; 109:878-891. [PMID: 37702320 DOI: 10.1093/biolre/ioad121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/14/2023] Open
Abstract
Sexual rest is a transient condition, which compromises conception rates, characterized by large volumes of ejaculate with high percentages of dead sperm observed in bulls. The biochemical mechanisms leading to this ejaculate pattern are not fully understood. Six adult resting Nellore bulls were submitted to Breeding Soundness Evaluation by four consecutive semen collections through the electroejaculation method during a 30 min period. Each ejaculate had its semen phenotypic parameters; morphology and physical aspects were evaluated. To assess enzymatic activity (superoxide dismutase, catalase, and glutathione S-transferase), lipid peroxidation (concentrations of malondialdehyde and nitric oxide), fatty acid, and proteomic profile aliquots of spermatozoa from the first and fourth ejaculates were used. All sperm parameters differed between the first and fourth ejaculates. Spermatozoa from the first ejaculate showed lower enzymatic activity and a higher concentration of lipid peroxidation markers. Among the 19 identified fatty acids, 52.7% are polyunsaturated. Relative abundance analysis showed that C12:0 and C18:0 fatty acids differed between the first and fourth ejaculates, being the fourth ejaculate richer in spermatozoa. The proteomics analysis identified a total of 974 proteins in both sample groups (first and fourth ejaculates). The majority of identified proteins are related to cellular processes and signaling. Quantitative proteomics showed 36 differentially abundant proteins, 6 up-regulated proteins in the first ejaculate, and 30 up-regulated proteins in the fourth ejaculate. Spermatozoa from bulls at sexual rest have less antioxidant capacity, causing changes in their fatty acid composition and protein profile, which generates the observed sperm pattern and lower fertilization capacity.
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Affiliation(s)
- Camilo José Ramírez-López
- Animal Reproduction Laboratory, Department of Veterinary Medicine, Universidade Federal de Viçosa, Viçosa, Minas Gerais, Brazil
- Structural Biology Laboratory, Department of Biology, Universidade Federal de Viçosa, Viçosa, Minas Gerai, Brazil
| | - Edvaldo Barros
- Nucleus for Analysis of Biomolecules, Universidade Federal de Viçosa, Brazil
| | | | - Denise Silva Okano
- Animal Reproduction Laboratory, Department of Veterinary Medicine, Universidade Federal de Viçosa, Viçosa, Minas Gerais, Brazil
| | - Lidiany Lopes Gomes
- Animal Reproduction Laboratory, Department of Veterinary Medicine, Universidade Federal de Viçosa, Viçosa, Minas Gerais, Brazil
| | | | - Alex Gazolla de Castro
- Biotechnology and Biodiversity for the Environment Laboratory, Department of Microbiology, Universidade Federal de Viçosa, Viçosa, Minas Gerais, Brazil
| | - Maria Cristina Baracat-Pereira
- Proteomics and Protein Biochemistry Laboratory, Department of Biochemistry and Molecular Biology, Universidade Federal de Viçosa, Viçosa, Minas Gerais, Brazil
| | - Simone Eliza Facioni Guimarães
- LABTEC-Animal Biotechnology Laboratory, Department of Animal Science, Universidade Federal de Viçosa, Viçosa, Minas Gerais, Brazil
| | - José Domingos Guimarães
- Animal Reproduction Laboratory, Department of Veterinary Medicine, Universidade Federal de Viçosa, Viçosa, Minas Gerais, Brazil
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Sato T, Arimura T, Murata K, Kawamura M, Obama W, Suzuki M, Nakauchi Y, Tominaga A, Morita M, Hiraoka K, Takayama-Watanabe E, Watanabe A. Differences of Extracellular Cues and Ca 2+ Permeable Channels in the Signaling Pathways for Inducing Amphibian Sperm Motility. Zoolog Sci 2021; 38:343-351. [PMID: 34342955 DOI: 10.2108/zs200159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Accepted: 02/24/2021] [Indexed: 11/17/2022]
Abstract
Low osmolality of freshwater and/or sperm motility-initiating substance (SMIS) induce amphibian sperm motility through increases in intracellular Ca2+. In the internally fertilizing newt Cynops pyrrhogaster, the sperm motility-initiating substance engages T type voltage-dependent Ca2 + channels and N-methyl D-aspartate-type glutamate receptors to initiate sperm motility and L type voltage-dependent Ca2+ channels to enhance motility. In the present study, differences in the usages of SMIS and Ca2+ permeable channels for sperm motility regulation were examined in amphibians that undergo different reproductive modes. Proteins of 14-17 kDa were detected by antibody against the active site peptide of SMIS in the oviduct secretion of internal fertilizers (C. pyrrhogaster, Cynops ensicauda, and Ambystoma mexicanum) and arboreal fertilizers (Rhacophorus arboreus and Rhacophorus schlegelii), but not in Buergeria japonica, an external fertilizer in freshwater. In the pharmacological study, a blocker of some transient receptor potential channels (RN1734) additionally suppressed enhancement of sperm motility in C. pyrrhogaster. In R. schlegelii, blockers of four types of channels differently suppressed sperm motility induced by low osmolality with or without the active site peptide of SMIS. Notably, blockers of L type voltage-dependent Ca2+ channels (nifedipine) and N-methyl D-aspartate-type glutamate receptors (MK801) suppressed sperm motility in the presence and the absence of the peptide, respectively. Low osmolality-induced sperm motility was suppressed by RN1734 and MK801 in B. japonica, but not in Xenopus laevis. These results reveal complex differences in the signaling pathways for inducing sperm motility that may be partly related to reproductive modes in amphibians.
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Affiliation(s)
- Tae Sato
- Faculty of Science, Biological Division, Yamagata University, Yamagata 990-8560, Japan
| | - Takeshi Arimura
- Faculty of Science, Biological Division, Yamagata University, Yamagata 990-8560, Japan
| | - Kenji Murata
- Center for Health & the Environment, University of California Davis, Davis CA 95616, USA
| | - Maako Kawamura
- Faculty of Science, Biological Division, Yamagata University, Yamagata 990-8560, Japan
| | - Wataru Obama
- Faculty of Science, Biological Division, Yamagata University, Yamagata 990-8560, Japan
| | - Megumu Suzuki
- Faculty of Science, Biological Division, Yamagata University, Yamagata 990-8560, Japan
| | - Yuni Nakauchi
- Faculty of Science, Biological Division, Yamagata University, Yamagata 990-8560, Japan
| | - Atsushi Tominaga
- Faculty of Education, University of the Ryukyus, Nishihara, Okinawa 903-0213, Japan
| | - Masaya Morita
- Sesoko Station, Tropical Biosphere Research Center, University of the Ryukyus, Sesoko, Motobu, Okinawa 905-0227, Japan
| | - Kiyoshi Hiraoka
- Expo Memorial Tsukuba Advanced Technology Center, Fujikin Incorporated, Tsukuba, Ibaraki 305-0841, Japan
| | | | - Akihiko Watanabe
- Faculty of Science, Biological Division, Yamagata University, Yamagata 990-8560, Japan,
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Priyadarshana C, Setiawan R, Tajima A, Asano A. Src family kinases-mediated negative regulation of sperm acrosome reaction in chickens (Gallus gallus domesticus). PLoS One 2020; 15:e0241181. [PMID: 33180820 PMCID: PMC7660528 DOI: 10.1371/journal.pone.0241181] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Accepted: 10/06/2020] [Indexed: 11/19/2022] Open
Abstract
The acrosome reaction (AR) is a strictly-regulated, synchronous exocytosis that is required for sperm to penetrate ova. This all-or-nothing process occurs only once in the sperm lifecycle through a sequence of signaling pathways. Spontaneous, premature AR therefore compromises fertilization potential. Although protein kinase A (PKA) pathways play a central role in AR across species, the signaling network used for AR induction is poorly understood in birds. Mechanistic studies of mammalian sperm AR demonstrate that PKA activity is downstreamly regulated by Src family kinases (SFKs). Using SFK inhibitors, our study shows that in chicken sperm, SFKs play a role in the regulation of PKA activity and spontaneous AR without affecting motility. Furthermore, we examined the nature of SFK phosphorylation using PKA and protein tyrosine phosphatase inhibitors, which demonstrated that unlike in mammals, SFK phosphorylation in birds does not occur downstream of PKA and is primarily regulated by calcium-dependent tyrosine phosphatase activity. Functional characterization of SFKs in chicken sperm showed that SFK activation modulates the membrane potential and plays a role in inhibiting spontaneous AR. Employing biochemical isolation, we also found that membrane rafts are involved in the regulation of SFK phosphorylation. This study demonstrates a unique mechanism for regulating AR induction inherent to avian sperm that ensure fertilization potential despite prolonged storage.
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Affiliation(s)
- Chathura Priyadarshana
- Graduate School of Life and Environmental Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Rangga Setiawan
- Graduate School of Life and Environmental Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Atsushi Tajima
- Faculty of Life and Environmental Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Atsushi Asano
- Faculty of Life and Environmental Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan
- * E-mail:
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Liu Y, Zhang F, Dai L. Cyclooxygenase 1 (COX1) as an indicator of sperm quality in humans. Andrologia 2020; 52:e13537. [PMID: 32100333 DOI: 10.1111/and.13537] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2019] [Accepted: 01/17/2020] [Indexed: 12/30/2022] Open
Abstract
Sperm quality is important for in vitro fertilisation and embryo transfer and intracytoplasmic sperm injection in the treatment of human infertility. The purpose of this study was to screen for biomarkers that could evaluate sperm quality. We analysed semen samples in 172 fertile males; multivariate logistic regression analysis showed that the levels of COX1 (17.5 ng/ml) in seminal plasma may represent a useful biomarker for sperm quality (area under the curve: 0.745; sensitivity: 0.808; specificity: 0.722). Analysis indicated that the values of parameters related to sperm quality changed significantly (p < .05) between COX1 level ≥ 17.5 ng/ml group and COX1 level < 17.5 ng/ml group. Further analysis of two consecutive semen samples (1-hr interval) from 48 subjects revealed that the first semen samples (COX1 levels ≥ 17.5 ng/ml) had a higher sperm concentration and a larger proportion of spermatozoa showing progressive motility, a lower rate of sperm DNA fragmentation and a lower proportion of spermatozoa undergoing the acrosome reaction spontaneously (p < .05); identical results were observed for the second semen samples. These data indicated that COX1 could be used as an indicator for sperm status and may be helpful for identifying better quality spermatozoa for artificial insemination.
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Affiliation(s)
- Yongjie Liu
- Reproductive Center, Yinchuan Maternity and Child Health Care Hospital, Yinchuan, China
| | - Fan Zhang
- Reproductive Center, Yinchuan Maternity and Child Health Care Hospital, Yinchuan, China
| | - Liang Dai
- Reproductive Center, Yinchuan Maternity and Child Health Care Hospital, Yinchuan, China
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Endo D, Kon S, Sato T, Toyama F, Katsura Y, Nakauchi Y, Takayama-Watanabe E, Watanabe A. NMDA-type glutamate receptors mediate the acrosome reaction and motility initiation in newt sperm. Mol Reprod Dev 2019; 86:1106-1115. [PMID: 31215127 DOI: 10.1002/mrd.23225] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2018] [Revised: 05/21/2019] [Accepted: 05/26/2019] [Indexed: 12/16/2022]
Abstract
The N-methyl d-aspartate type glutamate receptor (NMDAR) is a ligand-gated cation channel that causes Ca2+ influx in nerve cells. An NMDAR agonist is effective to the sperm motility in fowls, although the actual role of NMDAR in sperm function is unknown. In the present study, RNA-seq of the spermatogenic testes suggested the presence of NMDAR in the sperm of the newt Cynops pyrrhogaster. Glutamate of at least 0.7 ± 0.5 mM was detected in the egg-jelly substances along with acrosome reaction-inducing substance (ARIS) and sperm motility-initiating substance (SMIS). In the egg-jelly extract (JE) that included the ARIS and SMIS, the acrosome reaction was inhibited by a NMDAR antagonists, memantine and MK801. MK801 also inhibited the spontaneous acrosome reaction in Steinberg's salt solution (ST). Furthermore, memantine and MK801 suppressed the progressive motility of the sperm in JE and spontaneous waving of the undulating membrane, which is the tail structure giving thrust for forward motility, in ST. The spontaneous waving of the undulating membrane was promoted when Mg2+ , which blocks Ca2+ influx through gated NMDARs, was removed from the ST. In addition, the ARIS-induced acrosome reaction was inhibited by a selective antagonist of the transient receptor potential vanilloid 4, whose activation might result in the membrane depolarization to release Mg2+ from the NMDAR. These results suggest that NMDAR acts together with other cation channels in the induction of the acrosome reaction and motility of the sperm during the fertilization process of C. pyrrhogaster.
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Affiliation(s)
- Daisuke Endo
- Biological Division, Faculty of Science, Yamagata University, Yamagata, Japan
| | - Shinnosuke Kon
- Biological Division, Faculty of Science, Yamagata University, Yamagata, Japan
| | - Tae Sato
- Biological Division, Faculty of Science, Yamagata University, Yamagata, Japan
| | - Fubito Toyama
- Department of Fundamental Engineering, School of Engineering, Utsunomiya University, Utsunomiya, Japan
| | - Yohei Katsura
- Biological Division, Faculty of Science, Yamagata University, Yamagata, Japan
| | - Yuni Nakauchi
- Biological Division, Faculty of Science, Yamagata University, Yamagata, Japan
| | | | - Akihiko Watanabe
- Biological Division, Faculty of Science, Yamagata University, Yamagata, Japan
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