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Probing the chemical unfolding and phospholipid binding to the major protein of donkey seminal plasma, DSP-1 by fluorescence spectroscopy. J Photochem Photobiol A Chem 2023. [DOI: 10.1016/j.jphotochem.2023.114643] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
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2
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Ashwitha A, Ramesha KP, Ramesh P, Kootimole CN, Devadasan MJ, Ammankallu S, Jeyakumar S, Kumaresan A, Veerappa VG, Das DN, Prasad TSK. Quantitative proteomics profiling of spermatozoa and seminal plasma reveals proteins associated with semen quality in Bos indicus bulls. J Proteomics 2023; 273:104794. [PMID: 36535621 DOI: 10.1016/j.jprot.2022.104794] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Revised: 12/01/2022] [Accepted: 12/05/2022] [Indexed: 12/23/2022]
Abstract
Cattle breeding approaches are an evolving field of research in veterinary science. Certain factors such as Ejaculate Rejection Rate (ERR) pose a limitation to such approaches. In this regard, we sought to investigate the spermatozoa and seminal plasma proteome of Hallikar bulls with low (n = 3) and high (n = 3) ERR. Through the Tandem mass spectrometry approach, we identified a total of 2409 proteins, in which 828 proteins were common in both the semen components, whereas 375 and 378 proteins were unique to spermatozoa and seminal plasma respectively. Tandem mass tags (TMT) based protein quantification resulted in 75 spermatozoal, and 42 seminal plasma proteins being differentially regulated between high and low ERR bulls. Proteins such as SPADH2, TIMP-2, and PLA2G7 which are negative regulators of motility were upregulated in the seminal plasma of high ERR bulls. Proteins such as OAZ3, GPx4, and GSTM3 whose upregulation leads to reduced motility were upregulated in the spermatozoa of high ERR bulls. Caltrin and ADM proteins that enhance sperm motility were downregulated in the seminal plasma of high ERR bulls. The regulation of ACE, a negative regulator of sperm motility was upregulated in both the spermatozoa and seminal plasma of high ERR bulls. SIGNIFICANCE: The saying "Bull is more than half of the herd" signifies the importance of bull in the genetic improvement of the herd. Traditionally used semen quality tests will provide limited information about the potential fertility of bulls. The proteomics approach is a promising omics technology to understand the factors involved in male fertility. The present study identified the spermatozoal and seminal plasma proteins that are differentially regulated between high and low ERR bulls. Sperm motility-associated proteins are differentially regulated. This study if improved further, can be used to develop markers associated with semen quality which is useful for the selection of bulls.
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Affiliation(s)
- A Ashwitha
- Southern Regional Station, ICAR- National Dairy Research Institute, Banglore 560030, India
| | - Kerekoppa P Ramesha
- Southern Regional Station, ICAR- National Dairy Research Institute, Banglore 560030, India.
| | - Poornima Ramesh
- Centre for System Biology and Molecular Medicine, Yenepoya Research Centre, Yenepoya (Deemed to be University), Mangalore 575018, India
| | - Chinmaya Narayana Kootimole
- Centre for System Biology and Molecular Medicine, Yenepoya Research Centre, Yenepoya (Deemed to be University), Mangalore 575018, India
| | - M Joel Devadasan
- Southern Regional Station, ICAR- National Dairy Research Institute, Banglore 560030, India
| | - Shruthi Ammankallu
- Centre for System Biology and Molecular Medicine, Yenepoya Research Centre, Yenepoya (Deemed to be University), Mangalore 575018, India
| | - Sakthivel Jeyakumar
- Southern Regional Station, ICAR- National Dairy Research Institute, Banglore 560030, India
| | - Arumugam Kumaresan
- Southern Regional Station, ICAR- National Dairy Research Institute, Banglore 560030, India
| | | | - D N Das
- Southern Regional Station, ICAR- National Dairy Research Institute, Banglore 560030, India
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3
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The Bovine Seminal Plasma Protein PDC-109 Possesses Pan-Antiviral Activity. Viruses 2022; 14:v14092031. [PMID: 36146836 PMCID: PMC9504757 DOI: 10.3390/v14092031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Revised: 09/08/2022] [Accepted: 09/08/2022] [Indexed: 11/16/2022] Open
Abstract
Mammalian seminal plasma contains a multitude of bioactive components, including lipids, glucose, mineral elements, metabolites, proteins, cytokines, and growth factors, with various functions during insemination and fertilization. The seminal plasma protein PDC-109 is one of the major soluble components of the bovine ejaculate and is crucially important for sperm motility, capacitation, and acrosome reaction. A hitherto underappreciated function of seminal plasma is its anti-microbial and antiviral activity, which may limit the sexual transmission of infectious diseases during intercourse. We have recently discovered that PDC-109 inhibits the membrane fusion activity of influenza virus particles and significantly impairs viral infections at micromolar concentrations. Here we investigated whether the antiviral activity of PDC-109 is restricted to Influenza or if other mammalian viruses are similarly affected. We focused on Severe Acute Respiratory Syndrome Coronavirus-2 (SARS-CoV-2), the etiological agent of the Coronavirus Disease 19 (COVID-19), thoroughly assessing PDC-109 inhibition with SARS-CoV-2 Spike (S)-pseudotyped reporter virus particles, but also live-virus infections. Consistent with our previous publications, we found significant virus inhibition, albeit accompanied by substantial cytotoxicity. However, using time-of-addition experiments we discovered a treatment regimen that enables virus suppression without affecting cell viability. We furthermore demonstrated that PDC-109 is also able to impair infections mediated by the VSV glycoprotein (VSVg), thus indicating a broad pan-antiviral activity against multiple virus species and families.
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4
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Ding Y, Ding N, Zhang Y, Xie S, Huang M, Ding X, Dong W, Zhang Q, Jiang L. MicroRNA-222 Transferred From Semen Extracellular Vesicles Inhibits Sperm Apoptosis by Targeting BCL2L11. Front Cell Dev Biol 2021; 9:736864. [PMID: 34820370 PMCID: PMC8607813 DOI: 10.3389/fcell.2021.736864] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2021] [Accepted: 10/14/2021] [Indexed: 12/13/2022] Open
Abstract
Seminal plasma contains a large number of extracellular vesicles (EVs). However, the roles of these EVs and their interactions with sperm are not clear. To identify the important molecules affecting sperm motility in EVs, we analyzed RNA from seminal plasma EVs of boars with different sperm motility using whole-transcriptome sequencing and proteomic analysis. In total, 7 miRNAs, 67 lncRNAs, 126 mRNAs and 76 proteins were differentially expressed between the two groups. We observed that EV-miR-222 can obviously improve sperm motility. In addition, the results suggested that miR-222 was transferred into sperm by the EVs and that miR-222 affected sperm apoptosis by inhibiting the expression of EGFR, BCL2L11, BAX, CYCs, CASP9 and CASP3. The results of electron microscopy also showed that overexpression of miR-222 in EVs could reduce sperm apoptosis. The study of the whole transcriptomes and proteomes of EVs in boar semen revealed some miRNAs may play an important role in these EVs interactions with Duroc sperm, and the findings suggest that the release of miR-222 by semen EVs is an important mechanism by which sperm viability is maintained and sperm apoptosis is reduced. Our studies provide a new insight of miR-222 in EVs regulation for sperm motility and sperm apoptosis.
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Affiliation(s)
- Yaqun Ding
- National Engineering Laboratory for Animal Breeding, Key Laboratory of Animal Genetics, Breeding and Reproduction, Ministry of Agriculture, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Ning Ding
- National Engineering Laboratory for Animal Breeding, Key Laboratory of Animal Genetics, Breeding and Reproduction, Ministry of Agriculture, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Yu Zhang
- National Engineering Laboratory for Animal Breeding, Key Laboratory of Animal Genetics, Breeding and Reproduction, Ministry of Agriculture, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Shenmin Xie
- National Engineering Laboratory for Animal Breeding, Key Laboratory of Animal Genetics, Breeding and Reproduction, Ministry of Agriculture, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Mengna Huang
- National Engineering Laboratory for Animal Breeding, Key Laboratory of Animal Genetics, Breeding and Reproduction, Ministry of Agriculture, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Xiangdong Ding
- National Engineering Laboratory for Animal Breeding, Key Laboratory of Animal Genetics, Breeding and Reproduction, Ministry of Agriculture, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Wuzi Dong
- College of Animal Science and Technology, Northwest A&F University, Yangling, China
| | - Qin Zhang
- National Engineering Laboratory for Animal Breeding, Key Laboratory of Animal Genetics, Breeding and Reproduction, Ministry of Agriculture, College of Animal Science and Technology, China Agricultural University, Beijing, China.,College of Animal Science and Technology, Shandong Agricultural University, Tai'an, China
| | - Li Jiang
- National Engineering Laboratory for Animal Breeding, Key Laboratory of Animal Genetics, Breeding and Reproduction, Ministry of Agriculture, College of Animal Science and Technology, China Agricultural University, Beijing, China
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5
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Impact of Selected Small-Molecule Kinase Inhibitors on Lipid Membranes. Pharmaceuticals (Basel) 2021; 14:ph14080746. [PMID: 34451842 PMCID: PMC8401620 DOI: 10.3390/ph14080746] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2021] [Revised: 07/26/2021] [Accepted: 07/26/2021] [Indexed: 01/20/2023] Open
Abstract
Small-molecule protein kinase inhibitors are used for the treatment of various diseases. Although their effect(s) on the respective kinase are generally quite well understood, surprisingly, their interaction with membranes is only barely investigated; even though these drugs necessarily come into contact with the plasma and intracellular membranes. Using biophysical methods such as NMR, ESR, and fluorescence spectroscopy in combination with lipid vesicles, we studied the membrane interaction of the kinase inhibitors sunitinib, erlotinib, idelalisib, and lenvatinib; these drugs are characterized by medium log p values, a parameter reflecting the overall hydrophobicity of the molecules, which is one important parameter to predict the interaction with lipid membranes. While all four molecules tend to embed in a similar region of the lipid membrane, their presence has different impacts on membrane structure and dynamics. Most notably, sunitinib, exhibiting the lowest log p value of the four inhibitors, effectively influences membrane integrity, while the others do not. This shows that the estimation of the effect of drug molecules on lipid membranes can be rather complex. In this context, experimental studies on lipid membranes are necessary to (i) identify drugs that may disturb membranes and (ii) characterize drug-membrane interactions on a molecular level. Such knowledge is important for understanding the efficacy and potential side effects of respective drugs.
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6
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Kremkow J, Luck M, Huster D, Müller P, Scheidt HA. Membrane Interaction of Ibuprofen with Cholesterol-Containing Lipid Membranes. Biomolecules 2020; 10:biom10101384. [PMID: 32998467 PMCID: PMC7650631 DOI: 10.3390/biom10101384] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2020] [Revised: 09/25/2020] [Accepted: 09/26/2020] [Indexed: 12/14/2022] Open
Abstract
Deciphering the membrane interaction of drug molecules is important for improving drug delivery, cellular uptake, and the understanding of side effects of a given drug molecule. For the anti-inflammatory drug ibuprofen, several studies reported contradictory results regarding the impact of ibuprofen on cholesterol-containing lipid membranes. Here, we investigated membrane localization and orientation as well as the influence of ibuprofen on membrane properties in POPC/cholesterol bilayers using solid-state NMR spectroscopy and other biophysical assays. The presence of ibuprofen disturbs the molecular order of phospholipids as shown by alterations of the 2H and 31P-NMR spectra of the lipids, but does not lead to an increased membrane permeability or changes of the phase state of the bilayer. 1H MAS NOESY NMR results demonstrate that ibuprofen adopts a mean position in the upper chain/glycerol region of the POPC membrane, oriented with its polar carbonyl group towards the aqueous phase. This membrane position is only marginally altered in the presence of cholesterol. A previously reported result that ibuprofen is expelled from the membrane interface in cholesterol-containing DMPC bilayers could not be confirmed.
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Affiliation(s)
- Jan Kremkow
- Institute for Medical Physics and Biophysics, Leipzig University, Härtelstr. 16-18, D-04107 Leipzig, Germany; (J.K.); (D.H.)
| | - Meike Luck
- Department of Biology, Humboldt University Berlin, Invalidenstr. 42, D-10115 Berlin, Germany; (M.L.); (P.M.)
| | - Daniel Huster
- Institute for Medical Physics and Biophysics, Leipzig University, Härtelstr. 16-18, D-04107 Leipzig, Germany; (J.K.); (D.H.)
| | - Peter Müller
- Department of Biology, Humboldt University Berlin, Invalidenstr. 42, D-10115 Berlin, Germany; (M.L.); (P.M.)
| | - Holger A. Scheidt
- Institute for Medical Physics and Biophysics, Leipzig University, Härtelstr. 16-18, D-04107 Leipzig, Germany; (J.K.); (D.H.)
- Correspondence:
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7
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Gomes FP, Park R, Viana AG, Fernandez-Costa C, Topper E, Kaya A, Memili E, Yates JR, Moura AA. Protein signatures of seminal plasma from bulls with contrasting frozen-thawed sperm viability. Sci Rep 2020; 10:14661. [PMID: 32887897 PMCID: PMC7474054 DOI: 10.1038/s41598-020-71015-9] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2020] [Accepted: 07/22/2020] [Indexed: 02/07/2023] Open
Abstract
The present study investigated the seminal plasma proteome of Holstein bulls with low (LF; n = 6) and high (HF; n = 8) sperm freezability. The percentage of viable frozen-thawed sperm (%ViableSperm) determined by flow cytometry varied from -2.2 in LF to + 7.8 in HF bulls, as compared to the average %ViableSperm (54.7%) measured in an 860-sire population. Seminal proteins were analyzed by label free mass spectrometry, with the support of statistical and bioinformatics analyses. This approach identified 1,445 proteins, associated with protein folding, cell-cell adhesion, NADH dehydrogenase activity, ATP-binding, proteasome complex, among other processes. There were 338 seminal proteins differentially expressed (p < 0.05) in LF and HF bulls. Based on multivariate analysis, BSP5 and seminal ribonuclease defined the HF phenotype, while spermadhesin-1, gelsolin, tubulins, glyceraldehyde-3-phosphate dehydrogenase, calmodulin, ATP synthase, sperm equatorial segment protein 1, peroxiredoxin-5, secretoglobin family 1D and glucose-6-phosphate isomerase characterized the LF phenotype. Regression models indicated that %ViableSperm of bulls was related to seminal plasma peroxiredoxin-5, spermadhesin-1 and the spermadhesin-1 × BSP5 interaction (R2 = 0.84 and 0.79; p < 0.05). This report is the largest dataset of bovine seminal plasma proteins. Specific proteins of the non-cellular microenvironment of semen are potential markers of sperm cryotolerance.
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Affiliation(s)
| | - Robin Park
- The Scripps Research Institute, La Jolla, CA, USA
| | | | | | | | | | | | - John R Yates
- The Scripps Research Institute, La Jolla, CA, USA.
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Haralampiev I, Alonso de Armiño DJ, Luck M, Fischer M, Abel T, Huster D, Di Lella S, Scheidt HA, Müller P. Interaction of the small-molecule kinase inhibitors tofacitinib and lapatinib with membranes. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2020; 1862:183414. [PMID: 32710852 DOI: 10.1016/j.bbamem.2020.183414] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2020] [Revised: 07/09/2020] [Accepted: 07/12/2020] [Indexed: 12/31/2022]
Abstract
Lapatinib and tofacitinib are small-molecule kinase inhibitors approved for the treatment of advanced or metastatic breast cancer and rheumatoid arthritis, respectively. So far, the mechanisms which are responsible for their activities are not entirely understood. Here, we focus on the interaction of these drug molecules with phospholipid membranes, which has not yet been investigated before in molecular detail. Owing to their lipophilic characteristics, quantitatively reflected by large differences of the partition equilibrium between water and octanol phases (expressed by logP values), rather drastic differences in the membrane interaction of both molecules have to be expected. Applying experimental (nuclear magnetic resonance, fluorescence and ESR spectroscopy) and theoretical (molecular dynamics simulations) approaches, we found that lapatinib and tofacitinib bind to lipid membranes and insert into the lipid-water interface of the bilayer. For lapatinib, a deeper embedding into the membrane bilayer was observed than for tofacitinib implying different impacts of the molecules on the bilayer structure. While for tofacitinib, no influence to the membrane structure was found, lapatinib causes a membrane disturbance, as concluded from an increased permeability of the membrane for polar molecules. These data may contribute to a better understanding of the cellular uptake mechanism(s) and the side effects of the drugs.
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Affiliation(s)
- Ivan Haralampiev
- Humboldt-Universität zu Berlin, Department of Biology, Invalidenstr. 42, D-10115 Berlin, Germany
| | - Diego Javier Alonso de Armiño
- Departamento de Química Inorgánica, Analítica y Química Física/INQUIMAE-CONICET, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pab. II, C1428EHA Buenos Aires, Argentina
| | - Meike Luck
- Humboldt-Universität zu Berlin, Department of Biology, Invalidenstr. 42, D-10115 Berlin, Germany
| | - Markus Fischer
- Leipzig University, Institute for Medical Physics and Biophysics, Härtelstr. 16-18, D-04107 Leipzig, Germany
| | - Tobias Abel
- Leipzig University, Institute for Medical Physics and Biophysics, Härtelstr. 16-18, D-04107 Leipzig, Germany
| | - Daniel Huster
- Leipzig University, Institute for Medical Physics and Biophysics, Härtelstr. 16-18, D-04107 Leipzig, Germany
| | - Santiago Di Lella
- Instituto de Química Biológica - Ciencias Exactas y Naturales (IQUIBICEN) Conicet - Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pab. II, C1428EHA Ciudad de Buenos Aires, Argentina.
| | - Holger A Scheidt
- Leipzig University, Institute for Medical Physics and Biophysics, Härtelstr. 16-18, D-04107 Leipzig, Germany.
| | - Peter Müller
- Humboldt-Universität zu Berlin, Department of Biology, Invalidenstr. 42, D-10115 Berlin, Germany.
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9
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Höfner L, Luther AM, Waberski D. The role of seminal plasma in the liquid storage of spermatozoa. Anim Reprod Sci 2020; 220:106290. [PMID: 32001046 DOI: 10.1016/j.anireprosci.2020.106290] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2019] [Revised: 01/20/2020] [Accepted: 01/23/2020] [Indexed: 01/09/2023]
Abstract
Ongoing progress in proteomic characterization of seminal plasma has stimulated research on the identification of biomarkers for male fertility and sperm preservability. So far, many studies have evaluated the benefits of reconstituting cryopreserved or sex-sorted semen with seminal plasma. Less information is available about the effect of remaining or added seminal plasma in liquid preserved semen. The interaction between seminal plasma and spermatozoa is species -specific, and within species often complex and ambiguous. This article aims to review the action of seminal plasma on sperm function in preserved semen with a focus on liquid storage. Effects of seminal plasma on sperm traits during in vitro storage are summarized for males from four domestic farm animals, namely the bull, ram, boar and stallion. Special emphasis is placed on the effect of seminal plasma on long-term stored boar semen, including novel data demonstrating the attenuating effect of protective extender on the adverse effect of seminal plasma in some boars.
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Affiliation(s)
- Lisa Höfner
- Unit for Reproductive Medicine of Clinics/Clinic for Pigs and Small Ruminants, University of Veterinary Medicine Hannover, Bünteweg 15, D-30559, Hannover, Germany
| | - Anne-Marie Luther
- Unit for Reproductive Medicine of Clinics/Clinic for Pigs and Small Ruminants, University of Veterinary Medicine Hannover, Bünteweg 15, D-30559, Hannover, Germany
| | - Dagmar Waberski
- Unit for Reproductive Medicine of Clinics/Clinic for Pigs and Small Ruminants, University of Veterinary Medicine Hannover, Bünteweg 15, D-30559, Hannover, Germany.
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10
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Pini T, de Graaf SP, Druart X, Tsikis G, Labas V, Teixeira-Gomes AP, Gadella BM, Leahy T. Binder of Sperm Proteins 1 and 5 have contrasting effects on the capacitation of ram spermatozoa. Biol Reprod 2019; 98:765-775. [PMID: 29415221 DOI: 10.1093/biolre/ioy032] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2017] [Accepted: 02/01/2018] [Indexed: 11/13/2022] Open
Abstract
Binder of Sperm Proteins (BSPs) are the most abundant seminal plasma protein family in the ram and bull. They have been extensively studied in the bull but less is known about their function in ovine seminal plasma and current knowledge suggests that BSPs may have different effects in these two species. In the bull, they facilitate capacitation and destabilize the sperm membrane during in vitro handling, whereas in the ram, they appear to stabilize the sperm membrane and prevent cryopreservation-induced capacitation-like changes. Further investigation into the effects of BSPs on ram spermatozoa under capacitating conditions is required to further clarify their physiological roles in the ram. We investigated the effects of Binder of Sperm Proteins 1 and 5 on epididymal ram spermatozoa in conditions of low, moderate, and high cAMP. BSPs had minimal effects on sperm function in low-cAMP conditions, but caused significant changes under cAMP upregulation. BSP1 stabilized the membrane and qualitatively reduced protein tyrosine phosphorylation, but significantly increased cholesterol efflux and induced spontaneous acrosome reactions. BSP5 slightly increased spontaneous acrosome reactions and caused sperm necrosis. However, BSP5 had minimal effects on membrane lipid order and cholesterol efflux and did not inhibit protein tyrosine phosphorylation. These findings demonstrate that under maximal cAMP upregulation, BSP1 affected ram spermatozoa in a manner comparable to bull spermatozoa, while BSP5 did not.
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Affiliation(s)
- Taylor Pini
- School of Life and Environmental Sciences, Faculty of Science, University of Sydney, Sydney, New South Wales, Australia
| | - Simon P de Graaf
- School of Life and Environmental Sciences, Faculty of Science, University of Sydney, Sydney, New South Wales, Australia
| | - Xavier Druart
- Physiologie de la Reproduction et des Comportements, Institut National de la Recherche Agronomique, Le Centre National de la Recherche Scientifique, Institut Francais du Cheval et de L'Equitation, Université de Tours, Nouzilly, France
| | - Guillaume Tsikis
- Physiologie de la Reproduction et des Comportements, Institut National de la Recherche Agronomique, Le Centre National de la Recherche Scientifique, Institut Francais du Cheval et de L'Equitation, Université de Tours, Nouzilly, France
| | - Valerie Labas
- Plate-forme de Chirurgie et Imagerie pour la Recherche et l'Enseignement, Pôle d'Analyse et d'Imagerie des Biomolécules, Institut National de la Recherche Agronomique, Nouzilly, France
| | - Ana Paula Teixeira-Gomes
- Plate-forme de Chirurgie et Imagerie pour la Recherche et l'Enseignement, Pôle d'Analyse et d'Imagerie des Biomolécules, Institut National de la Recherche Agronomique, Nouzilly, France
| | - Barend M Gadella
- Department of Farm Animal Health and Biochemistry and Cell Biology, Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands
| | - Tamara Leahy
- School of Life and Environmental Sciences, Faculty of Science, University of Sydney, Sydney, New South Wales, Australia
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11
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Welke RW, Haralampiev I, Schröter F, Braun BC, Herrmann A, Sieben C, Müller P. Inhibition of influenza virus activity by the bovine seminal plasma protein PDC-109. EUROPEAN BIOPHYSICS JOURNAL: EBJ 2019; 48:503-511. [PMID: 31222413 DOI: 10.1007/s00249-019-01374-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/26/2018] [Revised: 03/12/2019] [Accepted: 06/09/2019] [Indexed: 12/19/2022]
Abstract
A number of viruses causing sexually transmissible diseases are transmitted via mammalian seminal plasma. Several components of seminal plasma have been shown to influence those viruses and their physiological impact. To unravel whether components of seminal plasma could affect viruses transmitted via other pathways, it was investigated here whether the bovine seminal plasma protein PDC-109, belonging to the Fn-type 2 protein family, influences the activity of influenza A viruses, used as a model for enveloped viruses. We found that PDC-109 inhibits the fusion of influenza virus with human erythrocyte membranes and leads to a decreased viral infection in MDCK cells. In the presence of the head group of the phospholipid phosphatidylcholine, phosphorylcholine, the inhibitory effect of PDC-109 was attenuated. This indicates that the impact of the protein is mainly caused by its binding to viral and to erythrocyte membranes thereby interfering with virus-cell binding. Our study underlines that Fn-type 2 proteins have to be considered as new antiviral components present in mammalian seminal plasma.
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Affiliation(s)
- Robert-William Welke
- Institute for Biology, Humboldt-Universität zu Berlin, Invalidenstr. 42, 10115, Berlin, Germany.,Department of Intracellular Proteolysis, Max Delbrück Center for Molecular Medicine, Robert-Rössle-Str. 10, 13125, Berlin, Germany
| | - Ivan Haralampiev
- Institute for Biology, Humboldt-Universität zu Berlin, Invalidenstr. 42, 10115, Berlin, Germany.,Department of Crystallography, Max Delbrück Center for Molecular Medicine, Robert-Rössle-Str. 10, 13125, Berlin, Germany
| | - Filip Schröter
- Leibniz Institute for Zoo and Wildlife Research, Alfred-Kowalke-Straße 17, 10315, Berlin, Germany.,Department of Cardiovascular Surgery, Heart Center Brandenburg, Brandenburg Medical School "Theodor-Fontane", Ladeburger Straße 17, 16321, Bernau, Germany
| | - Beate C Braun
- Leibniz Institute for Zoo and Wildlife Research, Alfred-Kowalke-Straße 17, 10315, Berlin, Germany
| | - Andreas Herrmann
- Institute for Biology, Humboldt-Universität zu Berlin, Invalidenstr. 42, 10115, Berlin, Germany
| | - Christian Sieben
- Institute for Biology, Humboldt-Universität zu Berlin, Invalidenstr. 42, 10115, Berlin, Germany. .,Laboratory for Experimental Biophysics, School of Basic Sciences, École Polytechnique Fédérale de Lausanne (EPFL), 1015, Lausanne, Switzerland.
| | - Peter Müller
- Institute for Biology, Humboldt-Universität zu Berlin, Invalidenstr. 42, 10115, Berlin, Germany.
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12
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Binder of Sperm Proteins protect ram spermatozoa from freeze-thaw damage. Cryobiology 2018; 82:78-87. [DOI: 10.1016/j.cryobiol.2018.04.005] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2017] [Revised: 04/09/2018] [Accepted: 04/09/2018] [Indexed: 01/21/2023]
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13
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Tsikis G, Reynaud K, Ferchaud S, Druart X. Seminal plasma differentially alters the resistance of dog, ram and boar spermatozoa to hypotonic stress. Anim Reprod Sci 2018; 193:1-8. [PMID: 29706418 DOI: 10.1016/j.anireprosci.2018.01.012] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2017] [Revised: 12/15/2017] [Accepted: 01/29/2018] [Indexed: 12/20/2022]
Abstract
During ejaculation and the deposition in the female genital tract, spermatozoa undergo hypo-osmotic stress and need to withstand it for optimal fertility. Resistance to hypo-osmotic stress may be affected by the interaction of the spermatozoa with seminal fluid components. The hypo-osmotic resistance of epididymal and ejaculated spermatozoa from dogs, rams and boars was assessed by flow cytometric measurement of sperm viability after incubation in NaCl solutions with osmolalities ranging from 0 to 300 mmol/kg. The hypotonic resistance of epididymal spermatozoa was greater than those of ejaculated spermatozoa in all three species. Among species comparison revealed that ejaculated spermatozoa from dogs were much more resistant than those from rams and boars as 80.4 ± 5.3%, 56.7 ± 4.7 and 9.6 ± 3.6% of live spermatozoa were observed following exposure to an osmolality of 90 mmol/kg in dogs, rams and boars respectively. This can be explained by the fact that dog, ram and boar differ markedly in composition of the seminal plasma owing to the presence (ram, boar) or absence (dog) of seminal vesicles. Hypotonic resistance of epididymal and ejaculated dog spermatozoa was similar whereas ram and boar spermatozoa showed a marked drop in resistance after ejaculation. The in vitro incubation of boar epididymal spermatozoa with raw seminal plasma or the seminal plasma protein fraction induced a similar loss of resistance, suggesting that seminal proteins are involved in the lack of resistance to hypotonic stress of boar ejaculated spermatozoa.
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Affiliation(s)
- Guillaume Tsikis
- INRA, UMR 85 Physiologie de la Reproduction et des Comportements, F-37380 Nouzilly, France; CNRS, UMR7247, F-37380 Nouzilly, France; Université François Rabelais de Tours, F-37000 Tours, France; IFCE, Institut Français du Cheval et de l'Equitation, F-37380 Nouzilly, France.
| | - Karine Reynaud
- INRA, UMR 85 Physiologie de la Reproduction et des Comportements, F-37380 Nouzilly, France; CNRS, UMR7247, F-37380 Nouzilly, France; Université François Rabelais de Tours, F-37000 Tours, France; IFCE, Institut Français du Cheval et de l'Equitation, F-37380 Nouzilly, France
| | - Stéphane Ferchaud
- INRA, GenESI, UE 1372 Génétique, expérimentations et systèmes innovants, F-86480 Rouillé, France
| | - Xavier Druart
- INRA, UMR 85 Physiologie de la Reproduction et des Comportements, F-37380 Nouzilly, France; CNRS, UMR7247, F-37380 Nouzilly, France; Université François Rabelais de Tours, F-37000 Tours, France; IFCE, Institut Français du Cheval et de l'Equitation, F-37380 Nouzilly, France
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Kumar CS, Singh BP, Alim S, Swamy MJ. Factors Influencing the Chaperone-Like Activity of Major Proteins of Mammalian Seminal Plasma, Equine HSP-1/2 and Bovine PDC-109: Effect of Membrane Binding, pH and Ionic Strength. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2018; 1112:53-68. [DOI: 10.1007/978-981-13-3065-0_5] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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15
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The interaction of sorafenib and regorafenib with membranes is modulated by their lipid composition. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2016; 1858:2871-2881. [PMID: 27581086 DOI: 10.1016/j.bbamem.2016.08.014] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2016] [Revised: 07/29/2016] [Accepted: 08/25/2016] [Indexed: 11/22/2022]
Abstract
Sorafenib and regorafenib are small-molecule kinase inhibitors approved for the treatment of locally recurrent or metastatic, progressive, differentiated thyroid carcinoma, renal cell carcinoma, and hepatocellular carcinoma (sorafenib) and of colorectal cancer (regorafenib). As of now, the mechanisms, which are responsible for their antitumor activities, are not completely understood. Given the lipophilic nature of the molecules, it can be hypothesized that the pharmacological impact is mediated by the interaction with cellular membranes as it is true for many pharmacologically active molecules. However, an interaction of sorafenib or regorafenib with lipid membranes has not yet been investigated in detail. Here, we characterized the interaction of both drugs with lipid membranes by applying a variety of biophysical approaches including nuclear magnetic resonance, electron spin resonance, and fluorescence spectroscopy. We found that sorafenib and regorafenib bind to lipid membranes by inserting into the lipid-water interface of the bilayer. This membrane embedding causes a disturbance of bilayer structure leading to an increased permeability of the membrane for polar molecules. One approach shows that the extent of the effects depends on the membrane lipid composition underlining a particular role of phosphatidylcholine and cholesterol. Our data for the first time characterize the impact of sorafenib and regorafenib on the lipid membrane structure and dynamics, which may contribute to a better understanding of their effectiveness in the treatment of malignancies as well as of their side effects.
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Scheidt HA, Haralampiev I, Theisgen S, Schirbel A, Sbiera S, Huster D, Kroiss M, Müller P. The adrenal specific toxicant mitotane directly interacts with lipid membranes and alters membrane properties depending on lipid composition. Mol Cell Endocrinol 2016; 428:68-81. [PMID: 27002491 DOI: 10.1016/j.mce.2016.03.022] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/08/2015] [Revised: 02/26/2016] [Accepted: 03/16/2016] [Indexed: 11/20/2022]
Abstract
Mitotane (o,p'.-DDD) is an orphan drug approved for the treatment of adrenocortical carcinoma. The mechanisms, which are responsible for this activity of the drug, are not completely understood. It can be hypothesized that an impact of mitotane is mediated by the interaction with cellular membranes. However, an interaction of mitotane with (lipid) membranes has not yet been investigated in detail. Here, we characterized the interaction of mitotane and its main metabolite o,p'-dichlorodiphenyldichloroacetic acid (o,p'-DDA) with lipid membranes by applying a variety of biophysical approaches of nuclear magnetic resonance, electron spin resonance, and fluorescence spectroscopy. We found that mitotane and o,p'-DDA bind to lipid membranes by inserting into the lipid-water interface of the bilayer. Mitotane but not o,p'-DDA directly causes a disturbance of bilayer structure leading to an increased permeability of the membrane for polar molecules. Mitotane induced alterations of the membrane integrity required the presence of phosphatidylethanolamine and/or cholesterol. Collectively, our data for the first time characterize the impact of mitotane on the lipid membrane structure and dynamics, which may contribute to a better understanding of specific mitotane effects and side effects.
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Affiliation(s)
- Holger A Scheidt
- University of Leipzig, Institute of Medical Physics and Biophysics, Härtelstr. 16-18, 04107 Leipzig, Germany
| | - Ivan Haralampiev
- Humboldt University Berlin, Department of Biology, Invalidenstr. 42, 10115 Berlin, Germany
| | - Stephan Theisgen
- University of Leipzig, Institute of Medical Physics and Biophysics, Härtelstr. 16-18, 04107 Leipzig, Germany
| | - Andreas Schirbel
- University Hospital Würzburg, Department of Nuclear Medicine, Oberdürrbacher Straße 6, 97080 Würzburg, Germany
| | - Silviu Sbiera
- University Hospital Würzburg, Department of Internal Medicine I, Endocrinology and Diabetes Unit, Oberdürrbacher Straße 6, 97080 Würzburg, Germany
| | - Daniel Huster
- University of Leipzig, Institute of Medical Physics and Biophysics, Härtelstr. 16-18, 04107 Leipzig, Germany
| | - Matthias Kroiss
- University Hospital Würzburg, Department of Internal Medicine I, Endocrinology and Diabetes Unit, Oberdürrbacher Straße 6, 97080 Würzburg, Germany
| | - Peter Müller
- Humboldt University Berlin, Department of Biology, Invalidenstr. 42, 10115 Berlin, Germany.
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17
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Fluorescence investigations on choline phospholipid binding and chemical unfolding of HSP-1/2, a major protein of horse seminal plasma. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2016; 158:89-98. [DOI: 10.1016/j.jphotobiol.2016.02.025] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2015] [Revised: 02/08/2016] [Accepted: 02/11/2016] [Indexed: 11/20/2022]
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18
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Le Guillou J, Ropers MH, Gaillard C, David-Briand E, van Leeuwen-Ibarrola J, Desherces S, Schmitt E, Bencharif D, Amirat-Briand L, Anton M, Tainturier D. Sequestration of bovine seminal plasma proteins by different assemblies of phosphatidylcholine: A new technical approach. Colloids Surf B Biointerfaces 2016; 140:523-530. [PMID: 26628332 DOI: 10.1016/j.colsurfb.2015.11.034] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2015] [Revised: 10/23/2015] [Accepted: 11/16/2015] [Indexed: 11/25/2022]
Abstract
Binder of SPerm (BSP) proteins, the main proteins from bovine seminal plasma, are known to partially intercalate into the outer leaflet of the spermatozoa membrane and bind to choline-containing lipids being present therein. This insertion generates a negative effect on semen quality after cryopreservation by inducing an early-stage capacitation of spermatozoa. The assumption of surface properties exhibited by BSP proteins was checked by tensiometry measurements: BSP proteins are highly surface active. This suggests that BSP proteins can reach the interface covered by phospholipids not only by interactions between one and each other but also due to their own surface activity. The insertion of BSP proteins into the lipid domains outer leaflet of spermatozoa was reproduced on a biomimetic system such as Langmuir monolayers. The insertion of BSP proteins can be performed in the compressible fluid domains which contain choline-bearing lipids. Monolayer films were used as well to study the complexation of BSP proteins by two phospholipid assemblies: low density lipoprotein (LDLs) from egg yolk or liposomes produced from egg phospholipids. Irrespective of the phospholipid structure (lipoprotein or liposome), BSP was hindered to alter the structure of the membrane. Only the overall ratio BSP proteins:phosphatidylcholine was important. The difference between the two sequestering agents lies on their surface properties: LDL have a strong tendency to merge with the outer layer whereas liposomes mainly remain in the bulk on the same time scale.
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Affiliation(s)
- J Le Guillou
- UPSP Risques sanitaires lies aux biotechnologies de la reproduction, ONIRIS, Nantes-Atlantic College of Veterinary Medicine and Food Science, Nantes, France; IMV Technologies, L'Aigle, France
| | - M-H Ropers
- INRA, UR1268 Biopolymères Interactions Assemblages, F-44300 Nantes, France.
| | - C Gaillard
- INRA, UR1268 Biopolymères Interactions Assemblages, F-44300 Nantes, France
| | - E David-Briand
- INRA, UR1268 Biopolymères Interactions Assemblages, F-44300 Nantes, France
| | | | | | | | - D Bencharif
- UPSP Risques sanitaires lies aux biotechnologies de la reproduction, ONIRIS, Nantes-Atlantic College of Veterinary Medicine and Food Science, Nantes, France
| | - L Amirat-Briand
- UPSP Risques sanitaires lies aux biotechnologies de la reproduction, ONIRIS, Nantes-Atlantic College of Veterinary Medicine and Food Science, Nantes, France
| | - M Anton
- INRA, UR1268 Biopolymères Interactions Assemblages, F-44300 Nantes, France
| | - D Tainturier
- UPSP Risques sanitaires lies aux biotechnologies de la reproduction, ONIRIS, Nantes-Atlantic College of Veterinary Medicine and Food Science, Nantes, France
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Leahy T, Gadella BM. New insights into the regulation of cholesterol efflux from the sperm membrane. Asian J Androl 2016; 17:561-7. [PMID: 25926609 PMCID: PMC4492045 DOI: 10.4103/1008-682x.153309] [Citation(s) in RCA: 65] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
Cholesterol is an essential component of the mammalian plasma membrane because it promotes membrane stability without comprising membrane fluidity. Given this important cellular role, cholesterol levels are tightly controlled at multiple levels. It has been clearly shown that cholesterol redistribution and depletion from the sperm membrane is a key part of the spermatozoon's preparation for fertilization. Some factors that regulate these events are described (e.g., bicarbonate, calcium) but the mechanisms underlying cholesterol export are poorly understood. How does a hydrophobic cholesterol molecule inserted in the sperm plasma membrane enter the energetically unfavorable aqueous surroundings? This review will provide an overview of knowledge in this area and highlight our gaps in understanding. The overall aim is to better understand cholesterol redistribution in the sperm plasma membrane, its relation to the possible activation of a cholesterol transporter and the role of cholesterol acceptors. Armed with such knowledge, sperm handling techniques can be adapted to better prepare spermatozoa for in vitro and in vivo fertilization.
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Affiliation(s)
| | - Bart M Gadella
- Department of Farm Animal Health and of Biochemistry and Cell Biology, Faculty of Veterinary Medicine, Utrecht University, Yalelaan 2, 3584 CM Utrecht, The Netherlands
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20
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Schröter F, Jakop U, Teichmann A, Haralampiev I, Tannert A, Wiesner B, Müller P, Müller K. Lipid dynamics in boar sperm studied by advanced fluorescence imaging techniques. EUROPEAN BIOPHYSICS JOURNAL: EBJ 2015; 45:149-63. [DOI: 10.1007/s00249-015-1084-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2015] [Revised: 09/09/2015] [Accepted: 09/17/2015] [Indexed: 12/23/2022]
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21
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Evolution and function of mammalian binder of sperm proteins. Cell Tissue Res 2015; 363:105-127. [DOI: 10.1007/s00441-015-2289-2] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2015] [Accepted: 08/26/2015] [Indexed: 01/28/2023]
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22
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Suarez SS. Mammalian sperm interactions with the female reproductive tract. Cell Tissue Res 2015; 363:185-194. [PMID: 26183721 DOI: 10.1007/s00441-015-2244-2] [Citation(s) in RCA: 170] [Impact Index Per Article: 18.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2015] [Accepted: 06/18/2015] [Indexed: 10/23/2022]
Abstract
The mammalian female reproductive tract interacts with sperm in various ways in order to facilitate sperm migration to the egg while impeding migrations of pathogens into the tract, to keep sperm alive during the time between mating and ovulation, and to select the fittest sperm for fertilization. The two main types of interactions are physical and molecular. Physical interactions include the swimming responses of sperm to the microarchitecture of walls, to fluid flows, and to fluid viscoelasticity. When sperm encounter walls, they have a strong tendency to remain swimming along them. Sperm will also orient their swimming into gentle fluid flows. The female tract seems to use these tendencies of sperm to guide them to the site of fertilization. When sperm hyperactivate, they are better able to penetrate highly viscoelastic media, such as the cumulus matrix surrounding eggs. Molecular interactions include communications of sperm surface molecules with receptors on the epithelial lining of the tract. There is evidence that specific sperm surface molecules are required to enable sperm to pass through the uterotubal junction into the oviduct. When sperm reach the oviduct, most bind to the oviductal epithelium. This interaction holds sperm in a storage reservoir until ovulation and serves to maintain the fertilization competence of stored sperm. When sperm are released from the reservoir, they detach from and re-attach to the epithelium repeatedly while ascending to the site of fertilization. We are only beginning to understand the communications that may pass between sperm and epithelium during these interactions.
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Affiliation(s)
- Susan S Suarez
- Department of Biomedical Sciences, College of Veterinary Medicine, Cornell University, Ithaca, NY, 14853, USA.
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23
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Jois PS, Plante G, Thérien I, Manjunath P. Functional characterization of the domains of the bovine binder of SPerm 5 (BSP5) protein. Reprod Biol Endocrinol 2015; 13:64. [PMID: 26084664 PMCID: PMC4476173 DOI: 10.1186/s12958-015-0058-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/29/2015] [Accepted: 06/02/2015] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Bovine BSP5 is a multifunctional protein primarily involved in sperm capacitation. BSP5 consists of long N-terminal part followed by two similar and highly conserved fibronectin type II domains designated A and B. METHODS In order to assess the role of these domains in the sperm binding and capacitation processes, we created recombinant individual domains (N, A, B), series of overlapping domains (NA and AB) and full-length BSP5 in an Escherichia coli expression system. The recombinant constructs were also tested for their ability to interact with ligands such as gelatine, heparin, chondroitin sulphate B and phosphatidylcholine liposomes by affinity chromatography and co-sedimentation studies. RESULTS With the exception of the N domain, all recombinant constructs retained gelatine, phosphatidylcholine, heparin and chondroitin sulphate B binding activities. Domain-wise studies showed clearly that AB domain is capable of performing its biological functions as well as the full-length protein, as it was able to potentiate heparin-mediated sperm capacitation. CONCLUSIONS These results indicate that the C-terminal domain composed of two Fn2 domains is sufficient and crucial to maintain the biological functions of BSP proteins. The N-terminal part of the protein did not bind to any of known BSP5-ligands including epididymal sperm and did not seem to be required for either sperm binding or sperm capacitation. This study also confirmed that glycosylation is not required for BSP-mediated sperm capacitation or any of the binding characteristics displayed by BSP5.
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Affiliation(s)
| | - Geneviève Plante
- Maisonneuve-Rosemont Hospital Research Centre, Montreal, QC, Canada.
- Department of Biochemistry and Molecular Medicine, Faculty of Medicine, University of Montreal, Quebec, Canada.
| | - Isabelle Thérien
- Maisonneuve-Rosemont Hospital Research Centre, Montreal, QC, Canada.
| | - Puttaswamy Manjunath
- Maisonneuve-Rosemont Hospital Research Centre, Montreal, QC, Canada.
- Department of Biochemistry and Molecular Medicine, Faculty of Medicine, University of Montreal, Quebec, Canada.
- Department of Medicine, Faculty of Medicine, University of Montreal, Quebec, Canada.
- Maisonneuve-Rosemont Hospital Research Center, 5415 l'Assomption blvd, Montreal, QC, H1T 2 M4, Canada.
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24
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Sullivan R, Saez F. Epididymosomes, prostasomes, and liposomes: their roles in mammalian male reproductive physiology. Reproduction 2013; 146:R21-35. [PMID: 23613619 DOI: 10.1530/rep-13-0058] [Citation(s) in RCA: 200] [Impact Index Per Article: 18.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Mammalian spermatozoa are unique cells in many ways, and the acquisition of their main function, i.e. fertilization capacity, is a multistep process starting in the male gonad and ending near the female egg for the few cells reaching this point. Owing to the unique character of this cell, the molecular pathways necessary to achieve its maturation also show some specific characteristics. One of the most striking specificities of the spermatozoon is that its DNA is highly compacted after the replacement of histones by protamines, making the classical processes of transcription and translation impossible. The sperm cells are thus totally dependent on their extracellular environment for their protection against oxidative stress, for example, or for the molecular changes occurring during the transit of the epididymis; the first organ in which post-testicular maturation takes place. The molecular mechanisms underlying sperm maturation are still largely unknown, but it has been shown in the past three decades that extracellular vesicles secreted by the male reproductive tract are involved in this process. This review will examine the roles played by two types of naturally occurring extracellular vesicles, epididymosomes and prostasomes, secreted by the epididymis and the prostate respectively. We will also describe how the use of artificial vesicles, liposomes, contributed to the study of male reproductive physiology.
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Affiliation(s)
- Robert Sullivan
- Department of Obstetrics, Gynecology and Reproduction, Université Laval and Reproduction, Mother and Youth Health Research Axes, Research Center, Centre Hospitalier Universitaire de Québec, Pavillon CHUL, 2705 Boul Laurier, Québec, Canada, G1V 4G2.
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25
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Serrano E, Pérez-Pé R, Calleja L, Guillén N, Casao A, Hurtado-Guerrero R, Muiño-Blanco T, Cebrián-Pérez JA. Characterization of the cDNA and in vitro expression of the ram seminal plasma protein RSVP14. Gene 2013; 519:271-8. [DOI: 10.1016/j.gene.2013.02.016] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2012] [Revised: 01/22/2013] [Accepted: 02/07/2013] [Indexed: 12/29/2022]
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26
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Grimm C, Meyer T, Czapla S, Nikolaus J, Scheidt HA, Vogel A, Herrmann A, Wessig P, Huster D, Müller P. Structure and Dynamics of Molecular Rods in Membranes: Application of a Spin-Labeled Rod. Chemistry 2013; 19:2703-10. [DOI: 10.1002/chem.201202500] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2012] [Revised: 11/19/2012] [Indexed: 11/07/2022]
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27
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Sánchez-Luengo S, Aumüller G, Albrecht M, Sen PC, Röhm K, Wilhelm B. Interaction of PDC-109, the Major Secretory Protein From Bull Seminal Vesicles, With Bovine Sperm Membrane Ca2+-ATPase. ACTA ACUST UNITED AC 2013; 25:234-44. [PMID: 14760009 DOI: 10.1002/j.1939-4640.2004.tb02783.x] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
PDC-109 is the prevalent secretory protein from bovine seminal vesicles that binds to the midpiece of sperm once they pass the ampulla of the vas deferens during emission. Thereby, the protein changes biophysical membrane properties, eventually resulting in increased sperm motility. To elucidate the underlying biochemical mechanism, we have studied the ion-pumping activity (Ca(2+)-ATPase) in membrane preparations of bovine spermatozoa following in vitro incubation with the protein and analyzed whether PDC-109 influences sperm motility. PDC-109 was purified to homogeneity from bull seminal vesicle extracts using a newly described method. The effect of PDC-109 on sperm motility was analyzed using the CASA-method. These experiments clearly demonstrated that PDC-109 significantly increases sperm motility. Calcium-pumping mechanisms were analyzed by monitoring the effect of PDC-109 on various parameters of enzyme activity of Ca(2+)-ATPase in epididymal sperm plasma membranes and were compared with Ca(2+)-ATPase activities from other organs and from epididymal sperm of different species, respectively. Specificity studies were performed using different Ca(2+)-antagonists. Enzyme activities of both Mg(2+)-dependent and Mg(2+)-independent Ca(2+)-ATPases increased in a dose-dependent manner following the addition of the PDC-109 (range 5-20 microg). Preincubation of PDC-109 at temperatures above 37 degrees C and pHs ranging from below 6.5 and above 8.5 led to the loss of the stimulatory effect. An analysis of enzyme kinetics pointed to irreversible, cooperative interaction of PDC-109 with the enzyme. The effect was organ-specific, that is, restricted to sperm ATPases, but it was not species-specific, as it could be elicited also in rat sperm.
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28
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HSP-1/2, a major protein of equine seminal plasma, exhibits chaperone-like activity. Biochem Biophys Res Commun 2012; 427:18-23. [DOI: 10.1016/j.bbrc.2012.08.120] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2012] [Accepted: 08/24/2012] [Indexed: 11/18/2022]
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29
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Leahy T, de Graaf SP. Seminal plasma and its effect on ruminant spermatozoa during processing. Reprod Domest Anim 2012; 47 Suppl 4:207-13. [PMID: 22827372 DOI: 10.1111/j.1439-0531.2012.02077.x] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
Seminal plasma can both inhibit and stimulate sperm function, making its use as a supportive medium somewhat contradictory. These effects are directed by the multifunctional action of numerous inorganic and organic components, but it is the direct association of seminal plasma proteins with the sperm membrane that is thought to exert the most significant response. In vitro handling of spermatozoa in preparation for artificial insemination may involve washing, dilution, cooling, freezing, re-warming and sex-sorting. These processes can alter proteins of the sperm surface and reduce seminal plasma in the sperm environment. This, among other factors, may destabilize the sperm membrane and reduce the fertilizable lifespan of spermatozoa. Such handling-induced damage may be prevented or reversed through supplementation of seminal plasma, but the effectiveness of this technique differs with species, and the source and subsequent treatment of both spermatozoa and seminal plasma. Seminal plasma appears to act as a protective medium during in vitro processing of ram spermatozoa, but this does not appear to be the case for bull spermatozoa. The reasons for this divergent effect will be discussed with particular emphasis on the influence of the major proteins of ruminant seminal plasma, known as BSP proteins. The biochemical and biophysical properties of these proteins are well documented, and this information has provided greater insight into the signalling pathways of capacitation and the protective action of extender components.
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Affiliation(s)
- T Leahy
- Faculty of Science, School of Veterinary Science, University of Queensland, Gatton, QLD, Australia.
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30
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Laitaoja M, Sankhala RS, Swamy MJ, Jänis J. Top-down mass spectrometry reveals new sequence variants of the major bovine seminal plasma protein PDC-109. JOURNAL OF MASS SPECTROMETRY : JMS 2012; 47:853-859. [PMID: 22791252 DOI: 10.1002/jms.3032] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
The major protein of bovine seminal plasma, PDC-109, is a 109-residue polypeptide that exists as a polydisperse aggregate under native conditions. The oligomeric state of this aggregate varies with ionic strength and the presence of lipids. Binding of PDC-109 to choline phospholipids on the sperm plasma membrane results in an efflux of cholesterol and choline phospholipids, which is an important step in sperm capacitation. In this study, Fourier transform ion cyclotron resonance mass spectrometry was used to analyze PDC-109 purified from bovine seminal plasma. In addition to the previously known PDC-109 variants, four new sequence variants were identified by top-down mass spectrometry. For example, a protein variant containing point mutations P10L and G14R was identified along with another form having a 14-residue truncation in the N-terminal region. Two other minor variants could also be identified from the affinity-purified PDC-109. These results demonstrate that PDC-109 is naturally produced as a mixture of several protein forms, most of which have not been detected in previous studies. Native mass spectrometry revealed that PDC-109 is exclusively monomeric at low protein concentrations, suggesting that the protein oligomers are weakly bound and can easily be disrupted. Ligand binding to PDC-109 was also investigated, and it was observed that two molecules of O-phosphorylcholine bind to each PDC-109 monomer, consistent with previous reports.
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Affiliation(s)
- Mikko Laitaoja
- Department of Chemistry, University of Eastern Finland, FI-80101, Joensuu, Finland
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D'Amours O, Bordeleau LJ, Frenette G, Blondin P, Leclerc P, Sullivan R. Binder of sperm 1 and epididymal sperm binding protein 1 are associated with different bull sperm subpopulations. Reproduction 2012; 143:759-71. [DOI: 10.1530/rep-11-0392] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Previously, we showed that binder of sperm 1 (BSP1) and epididymal sperm binding protein 1 (ELSPBP1) proteins are more abundant in the immotile bovine sperm subpopulation following cryopreservation. In this study, we investigated the association of BSP1 and ELSPBP1 with sperm in relation to their ability to survive the cryopreservation process. Fresh and cryopreserved semen samples from the same ejaculate collected from nine Holstein bulls were incubated with a fixable viability probe, fixed and permeabilised and then immunolabelled with rabbit anti-BSP1, rabbit anti-ELSPBP1 or rabbit IgG as negative control. Spermatozoa were then incubated with Alexa 488-conjugated secondary antibody and Hoechst 33342. For each sample, 10 000 ‘Hoechst positive’ events were analysed by flow cytometry. Alternatively, sperm populations were obtained by fluorescence-activated cell sorting. In freshly ejaculated live sperm, two distinct BSP1 detection patterns were revealed: a first population where BSP1 is present along the flagellar region (P1 subpopulation) and a second population where BSP1 is localised on both the flagellar and the acrosomal regions (P3 subpopulation). The dead population presented a BSP1 distribution similar to P3 but with a more intense fluorescence signal (P4 subpopulation). In the corresponding cryopreserved samples, all sperm in the P3 subpopulation were dead while only a small proportion of the P1 subpopulation was dead (P2 subpopulation). ELSPBP1 was detected only in dead spermatozoa and in comparable proportions in both freshly ejaculated and cryopreserved semen. These results show that the presence of BSP1 over the acrosomal region characterises spermatozoa sensitive to cryopreservation and that ELSPBP1 characterises spermatozoa that are already dead at ejaculation.
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Anbazhagan V, Sankhala RS, Singh BP, Swamy MJ. Isothermal titration calorimetric studies on the interaction of the major bovine seminal plasma protein, PDC-109 with phospholipid membranes. PLoS One 2011; 6:e25993. [PMID: 22022488 PMCID: PMC3193528 DOI: 10.1371/journal.pone.0025993] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2011] [Accepted: 09/15/2011] [Indexed: 11/19/2022] Open
Abstract
The interaction of the major bovine seminal plasma protein, PDC-109 with lipid membranes was investigated by isothermal titration calorimetry. Binding of the protein to model membranes made up of diacyl phospholipids was found to be endothermic, with positive values of binding enthalpy and entropy, and could be analyzed in terms of a single type of binding sites on the protein. Enthalpies and entropies for binding to diacylphosphatidylcholine membranes increased with increase in temperature, although a clear-cut linear dependence was not observed. The entropically driven binding process indicates that hydrophobic interactions play a major role in the overall binding process. Binding of PDC-109 with dimyristoylphosphatidylcholine membranes containing 25 mol% cholesterol showed an initial increase in the association constant as well as enthalpy and entropy of binding with increase in temperature, whereas the values decreased with further increase in temperature. The affinity of PDC-109 for phosphatidylcholine increased at higher pH, which is physiologically relevant in view of the basic nature of the seminal plasma. Binding of PDC-109 to Lyso-PC could be best analysed in terms of two types of binding interactions, a high affinity interaction with Lyso-PC micelles and a low-affinity interaction with the monomeric lipid. Enthalpy-entropy compensation was observed for the interaction of PDC-109 with phospholipid membranes, suggesting that water structure plays an important role in the binding process.
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Affiliation(s)
- V. Anbazhagan
- School of Chemistry, University of Hyderabad, Hyderabad, Andhra Pradesh, India
| | | | - Bhanu Pratap Singh
- School of Chemistry, University of Hyderabad, Hyderabad, Andhra Pradesh, India
| | - Musti J. Swamy
- School of Chemistry, University of Hyderabad, Hyderabad, Andhra Pradesh, India
- * E-mail:
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Sankhala RS, Damai RS, Anbazhagan V, Kumar CS, Bulusu G, Swamy MJ. Biophysical Investigations on the Interaction of the Major Bovine Seminal Plasma Protein, PDC-109, with Heparin. J Phys Chem B 2011; 115:12954-62. [DOI: 10.1021/jp203509r] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | - Rajani S. Damai
- School of Chemistry, University of Hyderabad, Hyderabad 500 046, India
| | - V. Anbazhagan
- School of Chemistry, University of Hyderabad, Hyderabad 500 046, India
| | - C. Sudheer Kumar
- School of Chemistry, University of Hyderabad, Hyderabad 500 046, India
| | - Gopalakrishnan Bulusu
- International Institute of Information Technology, Hyderabad 500032, India
- TCS Innovation Laboratories, Tata Consultancy Services, Hyderabad 500081, India
| | - Musti J. Swamy
- School of Chemistry, University of Hyderabad, Hyderabad 500 046, India
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Sankhala RS, Damai RS, Swamy MJ. Correlation of membrane binding and hydrophobicity to the chaperone-like activity of PDC-109, the major protein of bovine seminal plasma. PLoS One 2011; 6:e17330. [PMID: 21408153 PMCID: PMC3050878 DOI: 10.1371/journal.pone.0017330] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2010] [Accepted: 01/27/2011] [Indexed: 11/19/2022] Open
Abstract
The major protein of bovine seminal plasma, PDC-109 binds to choline phospholipids present on the sperm plasma membrane upon ejaculation and plays a crucial role in the subsequent events leading to fertilization. PDC-109 also shares significant similarities with small heat shock proteins and exhibits chaperone-like activity (CLA). Although the polydisperse nature of this protein has been shown to be important for its CLA, knowledge of other factors responsible for such an activity is scarce. Since surface exposure of hydrophobic residues is known to be an important factor which modulates the CLA of chaperone proteins, in the present study we have probed the surface hydrophobicity of PDC-109 using bisANS and ANS. Further, effect of phospholipids on the structure and chaperone-like activity of PDC-109 was studied. Presence of DMPC was found to increase the CLA of PDC-109 significantly, which could be due to the considerable exposure of hydrophobic regions on the lipid-protein recombinants, which can interact productively with the nonnative structures of target proteins, resulting in their protection. However, inclusion of DMPG instead of DMPC did not significantly alter the CLA of PDC-109, which could be due to the lower specificity of PDC-109 for DMPG as compared to DMPC. Cholesterol incorporation into DMPC membranes led to a decrease in the CLA of PDC-109-lipid recombinants, which could be attributed to reduced accessibility of hydrophobic surfaces to the substrate protein(s). These results underscore the relevance of phospholipid binding and hydrophobicity to the chaperone-like activity of PDC-109.
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Affiliation(s)
| | - Rajani S. Damai
- School of Chemistry, University of Hyderabad, Hyderabad, Andhra Pradesh, India
| | - Musti J. Swamy
- School of Chemistry, University of Hyderabad, Hyderabad, Andhra Pradesh, India
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35
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Damai RS, Sankhala RS, Anbazhagan V, Swamy MJ. 31P NMR and AFM studies on the destabilization of cell and model membranes by the major bovine seminal plasma protein, PDC-109. IUBMB Life 2010; 62:841-51. [DOI: 10.1002/iub.394] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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36
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Lafleur M, Courtemanche L, Karlsson G, Edwards K, Schwartz JL, Manjunath P. Bovine binder-of-sperm protein BSP1 promotes protrusion and nanotube formation from liposomes. Biochem Biophys Res Commun 2010; 399:406-11. [DOI: 10.1016/j.bbrc.2010.07.088] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2010] [Accepted: 07/25/2010] [Indexed: 11/29/2022]
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37
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Sankhala RS, Swamy MJ. The Major Protein of Bovine Seminal Plasma, PDC-109, Is a Molecular Chaperone. Biochemistry 2010; 49:3908-18. [DOI: 10.1021/bi100051d] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
| | - Musti J. Swamy
- School of Chemistry, University of Hyderabad, Hyderabad-500046, India
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38
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Favareto APA, Rodello L, Taconeli CA, Bicudo SD, Klinefelter GR, Kempinas WG. Identification of the SP22 Sperm Protein in Santa Inês and Dorper Rams. Reprod Domest Anim 2010; 45:323-30. [DOI: 10.1111/j.1439-0531.2008.01313.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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39
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Kim HJ, Choi MY, Kim HJ, Llinás M. Conformational dynamics and ligand binding in the multi-domain protein PDC109. PLoS One 2010; 5:e9180. [PMID: 20174627 PMCID: PMC2823774 DOI: 10.1371/journal.pone.0009180] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2009] [Accepted: 01/09/2010] [Indexed: 12/03/2022] Open
Abstract
PDC109 is a modular multi-domain protein with two fibronectin type II (Fn2) repeats joined by a linker. It plays a major role in bull sperm binding to the oviductal epithelium through its interactions with phosphorylcholines (PhCs), a head group of sperm cell membrane lipids. The crystal structure of the PDC109-PhC complex shows that each PhC binds to the corresponding Fn2 domain, while the two domains are on the same face of the protein. Long timescale explicit solvent molecular dynamics (MD) simulations of PDC109, in the presence and absence of PhC, suggest that PhC binding strongly correlates with the relative orientation of choline-phospholipid binding sites of the two Fn2 domains; unless the two domains tightly bind PhCs, they tend to change their relative orientation by deforming the flexible linker. The effective PDC109-PhC association constant of 28 M(-1), estimated from their potential of mean force is consistent with the experimental result. Principal component analysis of the long timescale MD simulations was compared to the significantly less expensive normal mode analysis of minimized structures. The comparison indicates that difference between relative domain motions of PDC109 with bound and unbound PhC is captured by the first principal component in the principal component analysis as well as the three lowest normal modes in the normal mode analysis. The present study illustrates the use of detailed MD simulations to clarify the energetics of specific ligand-domain interactions revealed by a static crystallographic model, as well as their influence on relative domain motions in a multi-domain protein.
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Affiliation(s)
- Hyun Jin Kim
- Department of Chemistry, Carnegie Mellon University, Pittsburgh, Pennsylvania, United States of America
| | - Moo Young Choi
- Department of Physics and Center for Theoretical Physics, Seoul National University, Seoul, Korea
| | - Hyung J. Kim
- Department of Chemistry, Carnegie Mellon University, Pittsburgh, Pennsylvania, United States of America
- School of Computational Sciences, Korea Institute for Advanced Study, Seoul, Korea
| | - Miguel Llinás
- Department of Chemistry, Carnegie Mellon University, Pittsburgh, Pennsylvania, United States of America
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40
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Höfer CT, Herrmann A, Müller P. Use of liposomes for studying interactions of soluble proteins with cellular membranes. Methods Mol Biol 2010; 606:69-82. [PMID: 20013390 DOI: 10.1007/978-1-60761-447-0_6] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Methods are described that have been used for characterizing the interaction of the soluble bovine seminal plasma protein PDC-109 with liposomes. PDC-109 binds to bull sperm cells upon ejaculation and is an important modulating factor of sperm cell maturation. The binding of the protein to sperm cells is mediated via lipids of the sperm plasma membrane. Most of our current knowledge about the molecular mechanisms of PDC-109-membrane interaction has been obtained by studies employing lipid vesicles. The experimental strategy described here can be applied to investigate the interaction of soluble proteins with membranes in order to understand their physiological role.
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Affiliation(s)
- Chris T Höfer
- Institut für Biologie/Biophysik, Humboldt Universität zu Berlin, Germany
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41
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Damai RS, Anbazhagan V, Rao KB, Swamy MJ. Fluorescence studies on the interaction of choline-binding domain B of the major bovine seminal plasma protein, PDC-109 with phospholipid membranes. BIOCHIMICA ET BIOPHYSICA ACTA-PROTEINS AND PROTEOMICS 2009; 1794:1725-33. [DOI: 10.1016/j.bbapap.2009.08.010] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2008] [Revised: 08/04/2009] [Accepted: 08/05/2009] [Indexed: 11/30/2022]
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42
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Colás C, Junquera C, Pérez-Pé R, Cebrián-Pérez JA, Muiño-Blanco T. Ultrastructural study of the ability of seminal plasma proteins to protect ram spermatozoa against cold-shock. Microsc Res Tech 2009; 72:566-72. [PMID: 19322897 DOI: 10.1002/jemt.20710] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
The process of sperm cryopreservation, involving cooling, freezing, and thawing, induces serious detrimental changes in sperm function. The plasma and acrosomal membranes of spermatozoa are considered to be the primary site of these modifications due to thermal, mechanical, chemical, and osmotic stress. In previous studies, we demonstrated the ability of seminal plasma (SP) proteins to protect ram spermatozoa against cold-shock by using biochemical markers and scanning electron microscopy. In this study, we have attempted to examine the potential protective effect of SP proteins in membrane ultrastructure of ram spermatozoa subjected to cold-shock, by means of transmission electron microscopy (TEM). All the experiments were carried out with fresh spermatozoa freed from SP by a dextran/swim-up procedure. The high proportion of viable spermatozoa found in the swim-up obtained sample decreased drastically after the cold-shock treatment, and a considerable blebbing and vesiculation of the plasma and acrosomal membranes was found. The addition of SP proteins increased the sperm resistance to damage due to cold-shock (48% membrane-intact spermatozoa versus 15% in the control sample), and TEM analysis revealed that membrane alteration was prevented. This protective effect seems to be specific for SP proteins, as the addition of BSA did not provide any protection.
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Affiliation(s)
- Carmen Colás
- Department of Biochemistry and Molecular and Cell Biology, School of Veterinary Medicine, University of Zaragoza, 50013 Zaragoza, Spain
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43
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Patrat C, Serres C. La capacitation in vivo : influence de l’environnement féminin. ACTA ACUST UNITED AC 2009; 37:536-9. [DOI: 10.1016/j.gyobfe.2009.04.009] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2009] [Accepted: 04/09/2009] [Indexed: 10/20/2022]
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44
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Druart X, Gatti JL, Huet S, Dacheux JL, Humblot P. Hypotonic resistance of boar spermatozoa: sperm subpopulations and relationship with epididymal maturation and fertility. Reproduction 2009; 137:205-13. [DOI: 10.1530/rep-08-0225] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Hypotonic resistance of boar spermatozoa was investigated by measuring the ratio of live/dead spermatozoa (SYBR-14/propidium iodide) by flow cytometry after hypotonic stress. The survival rate of ejaculated spermatozoa incubated in hypotonic solutions ranging from 3 to 330 mmol/kg followed a sigmoid curve that fitted a simple logistic model. The critical osmolality value (Osmcrit) at which 50% of spermatozoa died was determined with this model. Hypotonic resistance of spermatozoa increased with temperature between 15 and 39 °C and decreased after hydrogen superoxide treatment, but was not modified during 8 days of preservation in Beltsville thawing solution. Hypotonic resistance markedly decreased during epididymal maturation and after ejaculation as Osmcritat 15 °C was 54.7±3.2, 68.5±10.6, 116.7±2.1 and 194.3±3.7 mmol/kg for the caput, corpus, cauda and ejaculated spermatozoa respectively. Hypo-osmotic stress of 100 mmol/kg revealed a sperm subpopulation exhibiting increased hypotonic resistance compared with the whole ejaculate (Osmcrit=67.8±2.1 mmol/kg). Consistent differences were observed between lean and standard breeds (Pietrain versus Large White) and between boars within the same breed. According to data collected by artificial insemination centers during a large-scale field trial, hypotonic resistance of ejaculates was found to be positively correlated within vivofertility.
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45
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Sahin E, Petrunkina AM, Ekhlasi-Hundrieser M, Hettel C, Waberski D, Harrison RAP, Töpfer-Petersen E. Fibronectin type II-module proteins in the bovine genital tract and their putative role in cell volume control during sperm maturation. Reprod Fertil Dev 2009; 21:479-88. [DOI: 10.1071/rd08209] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2008] [Accepted: 11/14/2008] [Indexed: 11/23/2022] Open
Abstract
The male reproductive tract of ungulates contains two protein families bearing tandemly arranged fibronectin II (Fn2) modules; one (small Fn2 proteins) bears two modules (e.g. BSP–A1/2), the other (long Fn2 proteins) bears four (e.g. epididymal sperm-binding protein 1 (ELSPBP1)). While it is well known that small Fn2 proteins are present in bull semen, nothing is known about long Fn2 proteins. In the present study, the presence of ELSPBP1 proteins in the bull epididymis and their association with maturing spermatozoa were investigated using a specific antibody against canine ELSPBP1. Analysis of western blots showed ELSPBP1 to be present in the caput, corpus and cauda regions of the epididymis. The protein, which bound phosphorylcholine (PC) strongly, appeared to associate with the spermatozoa during maturation because it was absent from caput spermatozoa but present on cauda spermatozoa. Immunocytochemistry of cauda spermatozoa showed the protein to be bound to the post-acrosomal and midpiece regions. ELSPBP1 could not be detected on freshly ejaculated spermatozoa but was revealed after a capacitating treatment. Our previous studies have shown differences between bovine caput and cauda spermatozoa in terms of their ability to control cell volume. Because of the close homology of BSP–A1/2 PC binding regions with Fn2 regions in ELSPBP1, BSP–A1/2 was used as a model to investigate the effect of a PC-binding Fn2 protein on cell volume control. While the protein had no effect on cauda spermatozoa, it caused caput spermatozoa to swell more in response to hypotonic stress, similarly to untreated cauda spermatozoa.
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46
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Muiño-Blanco T, Pérez-Pé R, Cebrián-Pérez JA. Seminal Plasma Proteins and Sperm Resistance to Stress. Reprod Domest Anim 2008; 43 Suppl 4:18-31. [DOI: 10.1111/j.1439-0531.2008.01228.x] [Citation(s) in RCA: 97] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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47
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Interaction of the major protein from bovine seminal plasma, PDC-109 with phospholipid membranes and soluble ligands investigated by fluorescence approaches. BIOCHIMICA ET BIOPHYSICA ACTA-PROTEINS AND PROTEOMICS 2008; 1784:891-9. [DOI: 10.1016/j.bbapap.2008.03.002] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2007] [Revised: 02/25/2008] [Accepted: 03/05/2008] [Indexed: 11/19/2022]
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48
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Binding of bovine seminal plasma protein BSP-A1/-A2 to model membranes: Lipid specificity and effect of the temperature. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2008; 1778:502-13. [DOI: 10.1016/j.bbamem.2007.10.025] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2007] [Revised: 10/12/2007] [Accepted: 10/29/2007] [Indexed: 11/20/2022]
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49
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Cardozo JA, Fernández-Juan M, Cebrián-Pérez JA, Muiño-Blanco T. Identification of RSVP14 and RSVP20 Components by Two-dimensional Electrophoresis and Western-blotting. Reprod Domest Anim 2007; 43:15-21. [DOI: 10.1111/j.1439-0531.2006.00845.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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50
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Ekhlasi-Hundrieser M, Schäfer B, Philipp U, Kuiper H, Leeb T, Mehta M, Kirchhoff C, Töpfer-Petersen E. Sperm-binding fibronectin type II-module proteins are genetically linked and functionally related. Gene 2007; 392:253-65. [PMID: 17307309 DOI: 10.1016/j.gene.2007.01.002] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2006] [Revised: 01/08/2007] [Accepted: 01/08/2007] [Indexed: 10/23/2022]
Abstract
Fibronectin type II (Fn2) module-containing proteins in the male genital tract are characterized by different numbers of Fn2 modules. Predominantly two classes exist which are distinct by having either two or four Fn2 modules. Minor variants with three Fn2 modules were also found in the human and the porcine epididymis. To reveal their relationship, mRNAs and proteins of representatives of these classes were studied in human, in Sus scrofa, and in rodents. Adult boars expressed members of both classes, i.e. ELSPBP1 and pB1, in subsequent regions of the epididymis, and both were under androgenic control. Human and rodent epididymides, on the other hand, alternatively contained only representatives of one of these two classes, i.e. ELSPBP1 in the human and two different pB1-related counterparts in rodents. ELSPBP1 and pB1-related genomic sequences were closely linked in chromosomal regions HSA 19q and SSC 6 q11-q21; conserved synteny between these regions is well established. On the other hand, in a syntenic region on mouse chromosome 7, ELSPBP1-related sequences were lacking. Tight binding to the sperm membrane via a choline-mediated mechanism was a common feature of the two classes of Fn2-module proteins, suggesting related function(s). However, differences in their regionalized expression patterns along the male genital tract as well as in association sites on the sperm surface suggested a species-specific sequential order in sperm binding.
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Affiliation(s)
- Mahnaz Ekhlasi-Hundrieser
- Department of Reproductive Biology, University of Veterinary Medicine Hannover, Bünteweg 2, 30559 Hannover, Germany.
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