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Zhang M, Chiozzi RZ, Bromfield EG, Heck AJR, Helms JB, Gadella BM. Characterization of acrosin and acrosin binding protein as novel CRISP2 interacting proteins in boar spermatozoa. Andrology 2023; 11:1460-1471. [PMID: 36815564 PMCID: PMC10947329 DOI: 10.1111/andr.13413] [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: 11/16/2022] [Revised: 02/07/2023] [Accepted: 02/12/2023] [Indexed: 02/24/2023]
Abstract
BACKGROUND Previously, we reported that cysteine-rich secretory protein 2 is involved in high molecular weight complexes in boar spermatozoa. These cysteine-rich secretory protein 2protein complexes are formed at the last phase of sperm formation in the testis and play a role in sperm shaping and functioning. OBJECTIVES This study aimed to identify cysteine-rich secretory protein 2 interacting partners. These binding partner interactions were investigated under different conditions, namely, non-capacitating conditions, after the induction of in vitro sperm capacitation and subsequently during an ionophore A23187-induced acrosome reaction. MATERIALS AND METHODS The incubated pig sperm samples were subjected to protein extraction. Extracted proteins were subjected to blue native gel electrophoresis and native immunoblots. Immunoreactive gel bands were excised and subjected to liquid chromatography-mass spectrometry (LC-MS) analysis for protein identification. Protein extracts were also subjected to CRISP2 immunoprecipitation and analyzed by LC-MS for protein identification. The most prominent cystein-rich secretory protein 2 interacting proteins that appeared in both independent LC-MS analyses were studied with a functional in situ proximity interaction assay to validate their property to interact with cystein-rich secretory protein 2 in pig sperm. RESULTS Blue native gel electrophoresis and native immunoblots revealed that cystein-rich secretory protein 2 was present within a ∼150 kDa protein complex under all three conditions. Interrogation of cystein-rich secretory-protein 2-immunoreactive bands from blue native gels as well as cystein-rich secretory protein 2 immunoprecipitated products using mass spectrometry consistently revealed that, beyond cystein-rich secretory protein 2, acrosin and acrosin binding protein were among the most abundant interacting proteins and did interact under all three conditions. Co-immunoprecipitation and immunoblotting indicated that cystein-rich secretory protein 2 interacted with pro-acrosin (∼53 kDa) and Aacrosin binding protein under all three conditions and additionally to acrosin (∼35 kDa) after capacitation and the acrosome reaction. The colocalization of these interacting proteins with cystein-rich secretory protein 2 was assessed via in situ proximity ligation assays. The colocalization signal of cystein-rich secretory protein 2 and acrosin in the acrosome seemed dispersed after capacitation but was consistently present in the sperm tail under all conditions. The fluorescent foci of cystein-rich secretory protein 2 and acrsin binding protein colocalization appeared to be redistributed within the sperm head from the anterior acrosome to the post-acrosomal sheath region upon capacitation. DISCUSSION AND CONCLUSION These results suggest that CRISP2 may act as a scaffold for protein complex formation and dissociation to ensure the correct positioning of proteins required for the acrosome reaction and zona pellucida penetration.
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Affiliation(s)
- Min Zhang
- Department of Biomolecular Health SciencesFaculty of Veterinary Medicine, Utrecht UniversityUtrechtThe Netherlands
| | - Riccardo Zenezini Chiozzi
- Biomolecular Mass Spectrometry and ProteomicsBijvoet Centre for Biomolecular Research and Utrecht Institute for Pharmaceutical SciencesUtrecht UniversityUtrechtThe Netherlands
- Netherlands Proteomics CentreUtrechtThe Netherlands
| | - Elizabeth G Bromfield
- Department of Biomolecular Health SciencesFaculty of Veterinary Medicine, Utrecht UniversityUtrechtThe Netherlands
- Priority Research Centre for Reproductive ScienceSchool of Environmental and Life Sciences, Discipline of Biological Sciences, University of NewcastleCallaghanNew South WalesAustralia
| | - Albert JR Heck
- Biomolecular Mass Spectrometry and ProteomicsBijvoet Centre for Biomolecular Research and Utrecht Institute for Pharmaceutical SciencesUtrecht UniversityUtrechtThe Netherlands
- Netherlands Proteomics CentreUtrechtThe Netherlands
| | - J Bernd Helms
- Department of Biomolecular Health SciencesFaculty of Veterinary Medicine, Utrecht UniversityUtrechtThe Netherlands
| | - Bart M Gadella
- Department of Biomolecular Health SciencesFaculty of Veterinary Medicine, Utrecht UniversityUtrechtThe Netherlands
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The stallion sperm acrosome: Considerations from a research and clinical perspective. Theriogenology 2023; 196:121-149. [PMID: 36413868 DOI: 10.1016/j.theriogenology.2022.11.012] [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: 08/30/2022] [Revised: 11/02/2022] [Accepted: 11/07/2022] [Indexed: 11/16/2022]
Abstract
During the fertilization process, the interaction between the sperm and the oocyte is mediated by a process known as acrosomal exocytosis (AE). Although the role of the sperm acrosome on fertilization has been studied extensively over the last 70 years, little is known about the molecular mechanisms that govern acrosomal function, particularly in species other than mice or humans. Even though subfertility due to acrosomal dysfunction is less common in large animals than in humans, the evaluation of sperm acrosomal function should be considered not only as a complementary but a routine test when individuals are selected for breeding potential. This certainly holds true for stallions, which might display lower levels of fertility in the face of "acceptable" sperm quality parameters determined by conventional sperm assays. Nowadays, the use of high throughput technologies such as flow cytometry or mass spectrometry-based proteomic analysis is commonplace in the research arena. Such techniques can also be implemented in clinical scenarios of males with "idiopathic" subfertility. The current review focuses on the sperm acrosome, with particular emphasis on the stallion. We aim to describe the physiological events that lead to the acrosome formation within the testis, the role of very specific acrosomal proteins during AE, the methods to study the occurrence of AE under in vitro conditions, and the potential use of molecular biology techniques to discover new markers of acrosomal function and subfertility associated with acrosomal dysfunction in stallions.
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Transport of Acrosomal Enzymes by KIFC1 via the Acroframosomal Cytoskeleton during Spermatogenesis in Macrobrachium rosenbergii (Crustacea, Decapoda, Malacostracea). Animals (Basel) 2022; 12:ani12080991. [PMID: 35454238 PMCID: PMC9027553 DOI: 10.3390/ani12080991] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Revised: 03/28/2022] [Accepted: 04/06/2022] [Indexed: 02/05/2023] Open
Abstract
Simple Summary In crustaceans, the sperm have no tail, and spermatogenesis consists only of acrosomal formation and nuclear deformation. The mechanism of acrosome formation during spermatogenesis of Macrobrachium rosenbergii is one of the hot topics in reproductive biology. Many motor proteins are involved in spermatogenesis. KIFC1, as a member of the kinesin family, is one of the motor proteins that our lab has been focusing on. The acrosome contains a large number of acrosomal enzymes for the hydrolysis of the egg envelope. In order to understand how these acrosomal enzymes are transported to the acrosome cap after synthesis, we cloned the KIFC1 and the Acrosin of M. rosenbergii. By detecting the localization of KIFC1 and Acrosin, we found that Mr-KIFC1 may be involved in acrosomal enzyme transport during spermiogenesis of M. rosenbergii. This study is to propose the function of KIFC1 to transport acrosomal enzymes along the acroframosome structure during crustacean spermatogenesis. Abstract The spermatogenesis of crustaceans includes nuclear deformation and acrosome formation. The mechanism of acrosome formation is one focus of reproductive biology. In this study, Macrobrachium rosenbergii was selected as the research object to explore the mechanism of acrosome formation. The acrosome contains a large number of acrosomal enzymes for the hydrolysis of the egg envelope. How these acrosomal enzymes are transported to the acrosomal site after synthesis is the key scientific question of this study. The acroframosome (AFS) structure of caridean sperm has been reported. We hypothesized that acrosomal enzymes may be transported along the AFS framework to the acrosome by motor proteins. To study this hypothesis, we obtained the full-length cDNA sequences of Mr-kifc1 and Mr-Acrosin from the testis of M. rosenbergii. The Mr-kifc1 and Mr-Acrosin mRNA expression levels were highest in testis. We detected the distribution of Mr-KIFC1 and its colocalization with Mr-Acrosin during spermatogenesis by immunofluorescence. The colocalization of Mr-KIFC1 and microtubule indicated that Mr-KIFC1 may participate in sperm acrosome formation and nucleus maturation. The colocalization of Mr-KIFC1 and Mr-Acrosin indicated that Mr-KIFC1 may be involved in Acrosin transport during spermiogenesis of M. rosenbergii. These results suggest that Mr-KIFC1 may be involved in acrosomal enzymes transport during spermiogenesis of M. rosenbergii.
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Ploskonos M, Zulbalaeva D, Kurbangalieva N, Ripp S, Neborak E, Blagonravov M, Syatkin S, Sungrapova K, Hilal A. Assessing the biological effects of microwave irradiation on human semen in vitro and determining the role of seminal plasma polyamines in this process. Biomed Rep 2022; 16:38. [PMID: 35386108 PMCID: PMC8972826 DOI: 10.3892/br.2022.1521] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2021] [Accepted: 01/14/2022] [Indexed: 12/02/2022] Open
Abstract
The aim of the present study was to investigate the influence of millimeter-wave electromagnetic (MW) irradiation on normal and pathological human sperm in vitro, and to evaluate a possible role of polyamines (PA) in this process. The stability of sperm membranes, the number of apoptotic gametes, and the content of seminal plasma PA in the ejaculates of fertile and subfertile men were compared before and after short-term MW electromagnetic exposure in vitro. The ejaculate samples were collected from healthy donors [n=25, age 22-38 years old (y.o.), average age 30.6±1.1 y.o. (mean ± SEM)] and from subfertile men (n=78, age 25-48 y.o., average age 34.1±0.8 y.o.) and exposed to MW radiation. The electromagnetic field had a wavelength of 7.1 mm, a frequency of 42.194 GHz and an exposure time of 20 min. The fragility of sperm membranes was evaluated by their resistance to sodium chloride solution (Milovanov test) and to acetic acid (Joel test). Acrosin activity was assayed spectrophotometrically. Apoptosis was determined by the externalization of phosphatidylserine on the outer side of the sperm membrane and propidium iodide staining. The PA levels were determined by agar gel electrophoretic fractionation. An increase in the resistance of sperm membranes, a decrease in acrosin activity, a decrease in the number of apoptotic gametes and a decrease in the seminal plasma PA concentrations were found after exposure of the native human sperm to low-intensity MW irradiation. Two types of reactions were revealed for the subfertile samples. The results revealed positive bio-effects of specific microwaves on the human semen and the participation of PA in the realization of these effects.
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Affiliation(s)
- Maria Ploskonos
- Astrakhan State Medical University of The Healthcare Ministry of Russian Federation, Astrakhan 414000, Russian Federation
| | - Dilyara Zulbalaeva
- Astrakhan Region State Budget‑Financed Healthcare Institution ‘Family Healthcare and Reproduction Center’, Astrakhan 414040, Russian Federation
| | - Nuriya Kurbangalieva
- Astrakhan Region State Budget‑Financed Healthcare Institution ‘Family Healthcare and Reproduction Center’, Astrakhan 414040, Russian Federation
| | - Svetlana Ripp
- Astrakhan Region State Budget‑Financed Healthcare Institution ‘Family Healthcare and Reproduction Center’, Astrakhan 414040, Russian Federation
| | - Ekaterina Neborak
- Department of Biochemistry, Peoples' Friendship University of Russia (RUDN University), Moscow 117198, Russian Federation
| | - Mikhail Blagonravov
- Department of Pathophysiology, Peoples' Friendship University of Russia (RUDN University), Moscow 117198, Russian Federation
| | - Sergey Syatkin
- Department of Pathophysiology, Peoples' Friendship University of Russia (RUDN University), Moscow 117198, Russian Federation
| | - Kristina Sungrapova
- Department of Biochemistry, Peoples' Friendship University of Russia (RUDN University), Moscow 117198, Russian Federation
| | - Abdullah Hilal
- Department of Pathophysiology, Peoples' Friendship University of Russia (RUDN University), Moscow 117198, Russian Federation
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Araujo MS, de Oliveira Henriques Paulo OL, Scott C, Paranzini CS, Codognoto VM, de Paula Freitas Dell'Aqua C, Papa FO, de Souza FF. Insights into the influence of canine breed on proteomics of the spermatozoa and seminal plasma. J Proteomics 2022; 257:104508. [DOI: 10.1016/j.jprot.2022.104508] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2021] [Revised: 01/17/2022] [Accepted: 01/30/2022] [Indexed: 11/28/2022]
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Epithelial and Neural Cadherin in Mammalian Fertilization: Studies in the Mouse Model. Cells 2021; 11:cells11010102. [PMID: 35011663 PMCID: PMC8750299 DOI: 10.3390/cells11010102] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2021] [Revised: 12/20/2021] [Accepted: 12/24/2021] [Indexed: 12/18/2022] Open
Abstract
Successful mammalian fertilization requires a well-orchestrated sequence of molecular events leading to gamete fusion. Since this interaction involves Ca2+-dependent adhesion events, the participation of the Ca+2-dependent cell-cell adhesion proteins Epithelial (E-cad) and Neural (N-cad) cadherin is envisaged. We have previously reported the expression of E-cad and N-cad in human gametes and showed evidence of their involvement in sperm-oocyte adhesion events leading to fertilization. To overcome ethical limitations associated with the use of human gametes in fertilization-related studies, the mouse has been selected worldwide as the experimental model for over 4 decades. Herein, we report a detailed study aimed at characterizing the expression of E-cad and N-cad in murine gametes and their involvement in murine fertilization using specific antibodies and blocking peptides towards both adhesion proteins. E-cad and N-cad protein forms, as well as other members of the adhesion complex, specifically β-catenin and actin, were identified in spermatozoa, cumulus cells and oocytes protein extracts by means of Western immunoblotting. In addition, subcellular localization of these proteins was determined in whole cells using optical fluorescent microscopy. Gamete pre-incubation with anti-E-cad (ECCD-1) or N-cad (H-63) antibodies resulted in decreased (p < 0.05) In Vitro Fertilization (IVF) rates, when using both cumulus-oocytes complexes and cumulus-free oocytes. Moreover, IVF assays done with denuded oocytes and either antibodies or blocking peptides against E-cad and N-cad led to lower (p < 0.05) fertilization rates. When assessing each step, penetration of the cumulus mass was lower (p < 0.05) when spermatozoa were pre-incubated with ECCD-1 or blocking peptides towards E-cad or towards both E- and N-cad. Moreover, sperm-oolemma binding was impaired (p < 0.0005) after sperm pre-incubation with E-cad antibody or blocking peptide towards E-cad, N-cad or both proteins. Finally, sperm-oocyte fusion was lower (p < 0.05) after sperm pre-incubation with either antibody or blocking peptide against E-cad or N-cad. Our studies demonstrate the expression of members of the adherent complex in the murine model, and the use of antibodies and specific peptides revealed E-cad and N-cad participation in mammalian fertilization.
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Rosyada ZNA, Ulum MF, Tumbelaka LITA, Purwantara B. Sperm protein markers for Holstein bull fertility at National Artificial Insemination Centers in Indonesia. Vet World 2020; 13:947-955. [PMID: 32636592 PMCID: PMC7311869 DOI: 10.14202/vetworld.2020.947-955] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2019] [Accepted: 04/03/2020] [Indexed: 11/30/2022] Open
Abstract
BACKGROUND AND AIM Holstein cows and heifers are widely bred in Indonesia by artificial insemination (AI) to increase population and milk production. Sperm fertility is modulated by genetic factors, but the analysis of sperm quality is still based on macro- and microscopic characteristics. This study aimed to analyze both sperm quality and proteins of Holstein bulls at different fertility levels. MATERIALS AND METHODS The frozen semen samples were collected from the Indonesia National AI Center. They were classified based on the reproductive efficiency data and were grouped into high fertile (HF) and low fertile (LF). Sperm qualities were evaluated by microscopic evaluation. The Holstein sperm proteins were extracted using phenylmethanesulfonyl fluoride as a protease inhibitor and the benzidine detergent extraction method. Discontinuous sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE) was conducted to analyze the molecular weights (MWs) of the sperm proteins. The data obtained were analyzed by a t-test using the one-factor bull fertility level, and Spearman's correlation analysis was used to identify the correlation between the sperm microscopic evaluation parameters and protein bands. RESULTS The sperm motility post-freeze thawing was not significantly different between the HF and LF (p>0.05). The HF level had a higher percentage of viability, intact plasma membrane integrity, and intact acrosomes than the LF (p<0.05). Five protein bands were found in the SDS-PAGE of sperm proteins of Holstein bulls with different concentrations. Sperm proteins with MWs of 17.51 kDa, 14.87 kDa, 33.71 kDa, and 41.97 kDa were abundant in the Holstein bulls with an HF level, while 55 kDa proteins were abundant in the LF level of Holstein bulls. The sperm of Holstein bulls in the HF level contained proteins of about 33.71 kDa that were not detected in the LF. CONCLUSION The sperm protein with a molecular weight of 33.71 kDa was predicted to be a specific protein biomarker that influences bull fertility. Sperm fertilization abilities were also determined by the sperm proteins, the morphology of sperm acrosomes, and the quality of plasma membranes. This method can be used to select bulls with high fertility to increase the population of Holstein bulls.
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Affiliation(s)
| | - Mokhamad Fakhrul Ulum
- Study Program of Reproductive Biology, Graduate School, IPB University, Bogor, Indonesia
- Department of Veterinary Clinic, Reproduction and Pathology, Faculty of Veterinary Medicine, IPB University, Bogor, Indonesia
| | - Ligaya I. T. A. Tumbelaka
- Study Program of Reproductive Biology, Graduate School, IPB University, Bogor, Indonesia
- Department of Veterinary Clinic, Reproduction and Pathology, Faculty of Veterinary Medicine, IPB University, Bogor, Indonesia
| | - Bambang Purwantara
- Study Program of Reproductive Biology, Graduate School, IPB University, Bogor, Indonesia
- Department of Veterinary Clinic, Reproduction and Pathology, Faculty of Veterinary Medicine, IPB University, Bogor, Indonesia
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8
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Gunes S, Esteves SC. Role of genetics and epigenetics in male infertility. Andrologia 2020; 53:e13586. [PMID: 32314821 DOI: 10.1111/and.13586] [Citation(s) in RCA: 68] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2020] [Accepted: 03/12/2020] [Indexed: 12/23/2022] Open
Abstract
Male infertility is a complex condition with a strong genetic and epigenetic background. This review discusses the importance of genetic and epigenetic factors in the pathophysiology of male infertility. The interplay between thousands of genes, the epigenetic control of gene expression, and environmental and lifestyle factors, which influence genetic and epigenetic variants, determines the resulting male infertility phenotype. Currently, karyotyping, Y-chromosome microdeletion screening and CFTR gene mutation tests are routinely performed to investigate a possible genetic aetiology in patients with azoospermia and severe oligozoospermia. However, current testing is limited in its ability to identify a variety of genetic and epigenetic conditions that might be implicated in both idiopathic and unexplained infertility. Several epimutations of imprinting genes and developmental genes have been postulated to be candidate markers for male infertility. As such, development of novel diagnostic panels is essential to change the current landscape with regard to prevention, diagnosis and management. Understanding the underlying genetic mechanisms related to the pathophysiology of male infertility, and the impact of environmental exposures and lifestyle factors on gene expression might aid clinicians in developing individualised treatment strategies.
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Affiliation(s)
- Sezgin Gunes
- Medical Biology, Medical Faculty, Ondokuz Mayis University, Samsun, Turkey.,Molecular Medicine, Medical Faculty, Ondokuz Mayis University, Samsun, Turkey
| | - Sandro C Esteves
- ANDROFERT, Andrology and Human Reproduction Clinic, Referral Center for Male Reproduction, Campinas, São Paulo, SP, Brazil.,Department of Surgery (Division of Urology), University of Campinas (UNICAMP), Campinas, São Paulo, SP, Brazil.,Faculty of Health, Aarhus University, Aarhus, Denmark
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Kherraf ZE, Christou-Kent M, Karaouzene T, Amiri-Yekta A, Martinez G, Vargas AS, Lambert E, Borel C, Dorphin B, Aknin-Seifer I, Mitchell MJ, Metzler-Guillemain C, Escoffier J, Nef S, Grepillat M, Thierry-Mieg N, Satre V, Bailly M, Boitrelle F, Pernet-Gallay K, Hennebicq S, Fauré J, Bottari SP, Coutton C, Ray PF, Arnoult C. SPINK2 deficiency causes infertility by inducing sperm defects in heterozygotes and azoospermia in homozygotes. EMBO Mol Med 2018; 9:1132-1149. [PMID: 28554943 PMCID: PMC5538632 DOI: 10.15252/emmm.201607461] [Citation(s) in RCA: 75] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Azoospermia, characterized by the absence of spermatozoa in the ejaculate, is a common cause of male infertility with a poorly characterized etiology. Exome sequencing analysis of two azoospermic brothers allowed the identification of a homozygous splice mutation in SPINK2, encoding a serine protease inhibitor believed to target acrosin, the main sperm acrosomal protease. In accord with these findings, we observed that homozygous Spink2 KO male mice had azoospermia. Moreover, despite normal fertility, heterozygous male mice had a high rate of morphologically abnormal spermatozoa and a reduced sperm motility. Further analysis demonstrated that in the absence of Spink2, protease-induced stress initiates Golgi fragmentation and prevents acrosome biogenesis leading to spermatid differentiation arrest. We also observed a deleterious effect of acrosin overexpression in HEK cells, effect that was alleviated by SPINK2 coexpression confirming its role as acrosin inhibitor. These results demonstrate that SPINK2 is necessary to neutralize proteases during their cellular transit toward the acrosome and that its deficiency induces a pathological continuum ranging from oligoasthenoteratozoospermia in heterozygotes to azoospermia in homozygotes.
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Affiliation(s)
- Zine-Eddine Kherraf
- Genetic Epigenetic and Therapies of Infertility, Institute for Advanced Biosciences, Inserm U1209, CNRS UMR 5309, Université Grenoble Alpes, Grenoble, France
| | - Marie Christou-Kent
- Genetic Epigenetic and Therapies of Infertility, Institute for Advanced Biosciences, Inserm U1209, CNRS UMR 5309, Université Grenoble Alpes, Grenoble, France
| | - Thomas Karaouzene
- Genetic Epigenetic and Therapies of Infertility, Institute for Advanced Biosciences, Inserm U1209, CNRS UMR 5309, Université Grenoble Alpes, Grenoble, France
| | - Amir Amiri-Yekta
- Genetic Epigenetic and Therapies of Infertility, Institute for Advanced Biosciences, Inserm U1209, CNRS UMR 5309, Université Grenoble Alpes, Grenoble, France.,CHU de Grenoble, UF de Biochimie Génétique et Moléculaire, Grenoble, France.,Department of Genetics, Reproductive Biomedicine Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Tehran, Iran
| | - Guillaume Martinez
- Genetic Epigenetic and Therapies of Infertility, Institute for Advanced Biosciences, Inserm U1209, CNRS UMR 5309, Université Grenoble Alpes, Grenoble, France
| | - Alexandra S Vargas
- Genetic Epigenetic and Therapies of Infertility, Institute for Advanced Biosciences, Inserm U1209, CNRS UMR 5309, Université Grenoble Alpes, Grenoble, France
| | - Emeline Lambert
- Genetic Epigenetic and Therapies of Infertility, Institute for Advanced Biosciences, Inserm U1209, CNRS UMR 5309, Université Grenoble Alpes, Grenoble, France
| | - Christelle Borel
- Department of Genetic Medicine and Development, University of Geneva Medical School, Geneva 4, Switzerland
| | - Béatrice Dorphin
- Laboratoire d'Aide Médicale à la Procréation, Centre AMP 74, Contamine-sur-Arve, France
| | | | | | | | - Jessica Escoffier
- Genetic Epigenetic and Therapies of Infertility, Institute for Advanced Biosciences, Inserm U1209, CNRS UMR 5309, Université Grenoble Alpes, Grenoble, France
| | - Serge Nef
- Department of Genetic Medicine and Development, University of Geneva Medical School, Geneva 4, Switzerland
| | - Mariane Grepillat
- Genetic Epigenetic and Therapies of Infertility, Institute for Advanced Biosciences, Inserm U1209, CNRS UMR 5309, Université Grenoble Alpes, Grenoble, France
| | | | - Véronique Satre
- Genetic Epigenetic and Therapies of Infertility, Institute for Advanced Biosciences, Inserm U1209, CNRS UMR 5309, Université Grenoble Alpes, Grenoble, France.,CHU de Grenoble, UF de Génétique Chromosomique, Grenoble, France
| | - Marc Bailly
- Department of Reproductive Biology and Gynaecology, Poissy General Hospital, Poissy, France.,EA 7404 GIG, Université de Versailles Saint Quentin Montigny le Bretonneux, France
| | - Florence Boitrelle
- Department of Reproductive Biology and Gynaecology, Poissy General Hospital, Poissy, France.,EA 7404 GIG, Université de Versailles Saint Quentin Montigny le Bretonneux, France
| | | | - Sylviane Hennebicq
- Genetic Epigenetic and Therapies of Infertility, Institute for Advanced Biosciences, Inserm U1209, CNRS UMR 5309, Université Grenoble Alpes, Grenoble, France.,CHU de Grenoble, UF de Biologie de la procréation, Grenoble, France
| | - Julien Fauré
- CHU de Grenoble, UF de Biochimie Génétique et Moléculaire, Grenoble, France.,Grenoble Neuroscience Institute, INSERM 1216, Grenoble, France
| | - Serge P Bottari
- Genetic Epigenetic and Therapies of Infertility, Institute for Advanced Biosciences, Inserm U1209, CNRS UMR 5309, Université Grenoble Alpes, Grenoble, France.,CHU de Grenoble, UF de Radioanalyses, Grenoble, France
| | - Charles Coutton
- Genetic Epigenetic and Therapies of Infertility, Institute for Advanced Biosciences, Inserm U1209, CNRS UMR 5309, Université Grenoble Alpes, Grenoble, France.,CHU de Grenoble, UF de Génétique Chromosomique, Grenoble, France
| | - Pierre F Ray
- Genetic Epigenetic and Therapies of Infertility, Institute for Advanced Biosciences, Inserm U1209, CNRS UMR 5309, Université Grenoble Alpes, Grenoble, France .,CHU de Grenoble, UF de Biochimie Génétique et Moléculaire, Grenoble, France
| | - Christophe Arnoult
- Genetic Epigenetic and Therapies of Infertility, Institute for Advanced Biosciences, Inserm U1209, CNRS UMR 5309, Université Grenoble Alpes, Grenoble, France
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Ji M, Tang S, Pei W, Ning M, Ma Y, Li X, Guan W. Generation of haploid spermatids from chicken embryonal primordial germ cells. Int J Mol Med 2018; 42:53-60. [PMID: 29620249 PMCID: PMC5979930 DOI: 10.3892/ijmm.2018.3602] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2015] [Accepted: 01/10/2018] [Indexed: 11/21/2022] Open
Abstract
In vitro production of functional spermatids has special significance in the research of spermatogenesis and the treatment of male infertility. Primordial germ cells (PGCs) are the precursors of oocyte and sperm, which generate the totipotent cells. Studies have shown that PGCs have the potential ability to develop meiotic spermatids in vitro. Here we have shown that retinoic acid (RA) leads to PGC differentiation, and SCF can improve the efficiency of induction. We indicate an efficient approach to produce haploid spermatids from chicken PGCs in the presence of RA and stem cell factor (SCF). Real-time RT-PCR assays showed that RA and SCF induced a remarkable increase in expression of SYCP1, ACR, BOULE and DCM1 of meiotic germ cells and haploid germ cells, respectively. DNA content assays revealed that RA and SCF induced a remarkable increase of haploid cells. This study provides a theoretical basis and a great animal model for spermatogenesis study.
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Affiliation(s)
- Meng Ji
- Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, P.R. China
| | - Shuang Tang
- Liaoning Provincial Key Laboratory for Agricultural Biotechnology, College of Biological Science and Technology, Shenyang Agricultural University, Shenyang, Liaoning 110866, P.R. China
| | - Wenhua Pei
- Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, P.R. China
| | - Mingming Ning
- Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, P.R. China
| | - Yuehui Ma
- Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, P.R. China
| | - Xiangchen Li
- Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, P.R. China
| | - Weijun Guan
- Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, P.R. China
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Russi R, García MI, Vignatti P, Veiga MF, Vazquez-Levin MH, Veaute C. Immune mediators associated to male infertility in a mouse model of DNA immunization with the sperm protease proacrosin. J Reprod Immunol 2016; 118:28-35. [DOI: 10.1016/j.jri.2016.08.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2015] [Revised: 08/02/2016] [Accepted: 08/15/2016] [Indexed: 11/16/2022]
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12
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Liu J, Shen C, Fan W, Chen Y, Zhang A, Feng Y, Li Z, Kuang Y, Wang Z. Low levels of PRSS37 protein in sperm are associated with many cases of unexplained male infertility. Acta Biochim Biophys Sin (Shanghai) 2016; 48:1058-1065. [PMID: 27649891 DOI: 10.1093/abbs/gmw096] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2016] [Accepted: 08/01/2016] [Indexed: 11/13/2022] Open
Abstract
PRSS37, a putative trypsin-like serine protease, is highly conserved during mammalian evolution as revealed by multiple sequence alignment. Mice deficient for Prss37 gene exhibit male infertility, but their mating behavior, spermatogenesis, sperm morphology, and motility remain unaffected, similar to a situation called unexplained male infertility (UMI) in men (human being). Here, we demonstrated that PRSS37 is restrictively expressed in human testis, where it is mainly located in the elongating and elongated spermatids during spermiogenesis as shown by immunohistochemical analysis of normal human testicular sections. In mature sperm, PRSS37 appears in the acrosome region and diminishes during acrosome reaction. Further examination reveals that PRSS37 contents in sperm from patients with UMI are dramatically lower than those in sperm from men with proven fertility or from sperm donors. Sperm with low PRSS37 contents exhibit abnormal activation of the proacrosin/acrosin system and premature proteolysis of ADAM2, which may impair the functional competence of human sperm in vivo However, the in vitro fertilization outcomes of sperm with low PRSS37 contents are not affected. Together, these data implicate an important role of PRSS37 for male fertility. PRSS37 can be used as a potential molecular biomarker for evaluating sperm fertilization capability in vivo but not in vitro.
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Affiliation(s)
- Jianbing Liu
- State Key Laboratory of Medical Genomics, Research Center for Experimental Medicine, Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine (SJTUSM), Shanghai 200025, China
- Model Organism Division, E-Institutes of Shanghai Universities, SJTUSM , Shanghai 200025, China
| | - Chunling Shen
- State Key Laboratory of Medical Genomics, Research Center for Experimental Medicine, Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine (SJTUSM), Shanghai 200025, China
| | - Weimin Fan
- Reproductive Medical Center of Ruijin Hospital , Shanghai 200025, China
| | - Yan Chen
- Model Organism Division, E-Institutes of Shanghai Universities, SJTUSM , Shanghai 200025, China
| | - Aijun Zhang
- Reproductive Medical Center of Ruijin Hospital , Shanghai 200025, China
| | - Yun Feng
- Reproductive Medical Center of Ruijin Hospital , Shanghai 200025, China
| | - Zheng Li
- Shanghai Human Sperm Bank of Shanghai Renji Hospital , Shanghai 200025, China
| | - Ying Kuang
- Shanghai Research Center for Model Organisms , Shanghai 201203, China
| | - Zhugang Wang
- State Key Laboratory of Medical Genomics, Research Center for Experimental Medicine, Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine (SJTUSM), Shanghai 200025, China
- Model Organism Division, E-Institutes of Shanghai Universities, SJTUSM , Shanghai 200025, China
- Shanghai Research Center for Model Organisms , Shanghai 201203, China
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Vazquez-Levin MH, Marín-Briggiler CI, Veaute C. Antisperm antibodies: invaluable tools toward the identification of sperm proteins involved in fertilization. Am J Reprod Immunol 2014; 72:206-18. [PMID: 24863647 DOI: 10.1111/aji.12272] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2014] [Accepted: 04/28/2014] [Indexed: 12/18/2022] Open
Abstract
The identification of sperm proteins involved in fertilization has been the subject of numerous investigations. Much interest has been dedicated to naturally occurring antisperm antibodies (ASA) and their impact in fertility. Their presence in men and women has been associated with 2-50% of infertility cases. ASA may impair pre- and post-fertilization steps. Experimental models have been developed using sperm proteins as immunogens to evaluate their involvement in sperm function. Our team has pursued investigations to assess ASA presence in biological fluids from patients consulting for infertility and their effect on fertilization. We found ASA in follicular fluids with ability of inducing the acrosome reaction and blocking sperm-zona pellucida interaction and used them to identify sperm entities involved in these events. We generated and utilized antibodies against proacrosin/acrosin to characterize the sperm protease system. We implemented an ELISA to detect proacrosin/acrosin antibodies in human sera and evaluated their impact upon fertility by developing in vitro assays and a gene immunization model. This review presents a summary of ASA history, etiology, current approaches for detection and effects upon fertility. ASA (naturally occurring, generated by animal immunization and/or of commercial origin) are invaluable tools to understand the molecular basis of fertilization, better diagnose/treat immunoinfertility and develop immunocontraceptive methods.
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Affiliation(s)
- Mónica H Vazquez-Levin
- Instituto de Biología y Medicina Experimental (IBYME), National Research Council of Argentina (CONICET), Buenos Aires, Argentina
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La Spina FA, Romanato M, Brugo-Olmedo S, De Vincentiis S, Julianelli V, Rivera RM, Buffone MG. Heterogeneous distribution of histone methylation in mature human sperm. J Assist Reprod Genet 2013; 31:45-9. [PMID: 24221913 DOI: 10.1007/s10815-013-0137-4] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2013] [Accepted: 10/29/2013] [Indexed: 11/26/2022] Open
Abstract
PURPOSE To analyze the presence of various histone modifications in ejaculated human spermatozoa METHODS In this prospective study, seminal ejaculates from 39 normozoospermic individuals were evaluated for semen analysis and the presence of histone modifications in isolated nuclei. RESULTS We observed heterogeneous presence of histone methylation in normal mature human sperm. We observed that 12 to 30 % of the nuclei of normal sperm contain a heterogeneous distribution of the marks H3K4Me1, H3K9Me2, H3K4Me3, H3K79Me2, and H3K36Me3. Moreover, the presence of these marks is higher in the poor motile fraction of the ejaculate, which is associated with poor morphology and functional quality. In contrast, we did not observe histone acetylation (H3K4Ac and H4K5Ac) in normal or abnormal mature human sperm CONCLUSIONS Defects in the process of spermatogenesis may alter the correct epigenetic programming in mature sperm. Further studies are required to evaluate the impact of these findings in human infertility.
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Affiliation(s)
- Florenza A La Spina
- Instituto de Biología y Medicina Experimental, CONICET, Vuelta de Obligado 2490, 1428, Buenos Aires, Argentina
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15
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García L, Veiga MF, Lustig L, Vazquez-Levin MH, Veaute C. DNA Immunization Against Proacrosin Impairs Fertility in Male Mice. Am J Reprod Immunol 2012; 68:56-67. [DOI: 10.1111/j.1600-0897.2012.01127.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2012] [Accepted: 02/19/2012] [Indexed: 11/28/2022] Open
Affiliation(s)
- Lucila García
- Facultad de Bioquímica y Ciencias Biológicas; Universidad Nacional del Litoral; Ciudad Universitaria; Santa Fe; Argentina
| | - María F. Veiga
- Instituto de Biología y Medicina Experimental (IBYME); National Research Council of Argentina (CONICET); Buenos Aires; Argentina
| | - Livia Lustig
- Instituto de Investigaciones en Reproducción; Facultad de Medicina; Universidad de Buenos Aires; Buenos Aires; Argentina
| | - Mónica H. Vazquez-Levin
- Instituto de Biología y Medicina Experimental (IBYME); National Research Council of Argentina (CONICET); Buenos Aires; Argentina
| | - Carolina Veaute
- Facultad de Bioquímica y Ciencias Biológicas; Universidad Nacional del Litoral; Ciudad Universitaria; Santa Fe; Argentina
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Puigmulé M, Fàbrega A, Yeste M, Bonet S, Pinart E. Study of the proacrosin-acrosin system in epididymal, ejaculated and in vitro capacitated boar spermatozoa. Reprod Fertil Dev 2012; 23:837-45. [PMID: 21871203 DOI: 10.1071/rd10345] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2010] [Accepted: 03/21/2011] [Indexed: 11/23/2022] Open
Abstract
The present study aimed to develop a set of sensitive assays to evaluate the presence of different isoforms, the activity degree, and the immunolocalisation of proacrosin-acrosin in sexually mature boars. The goal was to determine the proacrosin-acrosin status of boar spermatozoa throughout epididymal maturation, during ejaculation and after in vitro capacitation. In epididymal samples, proacrosin expression was high in all regions studied. In contrast, α- and β-acrosin expression was low in the caput region, and increased progressively during maturation and in vitro capacitation. In in vitro capacitated samples, the acrosin activity was 2.25 times higher than in the ejaculated samples and immunolocalisation analyses showed redistribution of proacrosin-acrosin at the apical ridge of the head. This study provides relevant data about the expression, localisation and activity of the proacrosin-acrosin system in healthy adult boars that can be used as a base to analyse changes in the proacrosin-acrosin system under pathological conditions.
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Affiliation(s)
- Marta Puigmulé
- Department of Biology, University of Girona, Girona, Spain.
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Veaute C, Liu DY, Furlong LI, Biancotti JC, Baker HWG, Vazquez-Levin MH. Anti-human proacrosin antibody inhibits the zona pellucida (ZP)-induced acrosome reaction of ZP-bound spermatozoa. Fertil Steril 2009; 93:2456-9. [PMID: 19850289 DOI: 10.1016/j.fertnstert.2009.08.040] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2009] [Revised: 07/21/2009] [Accepted: 08/12/2009] [Indexed: 11/29/2022]
Abstract
The anti-acrosin monoclonal antibody AcrC5F10 inhibited proacrosin activation, proacrosin-human zona pellucida glycoprotein A (ZPA) binding, and the zona pellucida (ZP)-induced acrosome reaction of the ZP-bound spermatozoa but had no significant effect on sperm-ZP binding. These results suggest that proacrosin-acrosin may play an important role in the ZP-induced acrosome reaction of spermatozoa after primary binding to the ZP.
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Affiliation(s)
- Carolina Veaute
- Instituto de Biología y Medicina Experimental (IBYME), National Research Council of Argentina (CONICET), 1428ADN, Buenos Aires, Argentina
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18
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Marín-Briggiler CI, Lapyckyj L, González Echeverría MF, Rawe VY, Alvarez Sedó C, Vazquez-Levin MH. Neural cadherin is expressed in human gametes and participates in sperm-oocyte interaction events. ACTA ACUST UNITED AC 2009; 33:e228-39. [DOI: 10.1111/j.1365-2605.2009.00999.x] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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19
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Veaute C, Furlong LI, Cameo M, Harris JD, Vazquez-Levin MH. Antiacrosin antibodies and infertility. II. Gene immunization with human proacrosin to assess the effect of immunity toward proacrosin/acrosin upon protein activities and animal fertility. Fertil Steril 2009; 91:1256-68. [DOI: 10.1016/j.fertnstert.2008.01.082] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2007] [Revised: 01/22/2008] [Accepted: 01/22/2008] [Indexed: 01/08/2023]
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20
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Veaute C, Furlong LI, Bronson R, Harris JD, Vazquez-Levin MH. Acrosin antibodies and infertility. I. Detection of antibodies towards proacrosin/acrosin in women consulting for infertility and evaluation of their effects upon the sperm protease activities. Fertil Steril 2009; 91:1245-55. [DOI: 10.1016/j.fertnstert.2007.12.072] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2007] [Revised: 12/27/2007] [Accepted: 12/27/2007] [Indexed: 10/22/2022]
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21
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Marín-Briggiler CI, González-Echeverría MF, Munuce MJ, Ghersevich S, Caille AM, Hellman U, Corrigall VM, Vazquez-Levin MH. Glucose-regulated protein 78 (Grp78/BiP) is secreted by human oviduct epithelial cells and the recombinant protein modulates sperm-zona pellucida binding. Fertil Steril 2009; 93:1574-84. [PMID: 19296942 DOI: 10.1016/j.fertnstert.2008.12.132] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2008] [Revised: 12/19/2008] [Accepted: 12/23/2008] [Indexed: 11/17/2022]
Abstract
OBJECTIVE To determine the secretion of Grp78 by human oviduct epithelial cells, its association to spermatozoa, and its involvement in gamete interaction. DESIGN Prospective study. SETTING Basic research laboratory. SUBJECT(S) Semen samples obtained from normozoospermic volunteers. Tubal tissue provided by patients undergoing hysterectomies. Oocytes collected from women undergoing IVF-ET. INTERVENTION(S) Analysis of Grp78 expression and secretion by oviductal tissue. Gamete incubation with recombinant Grp78 (rec-Grp78). MAIN OUTCOME MEASURE(S) Assessment of protein expression and secretion by immunohistochemistry and Western immunoblotting, respectively. Evaluation of rec-Grp78 binding to human spermatozoa by immunocytochemistry, and analysis of its effect upon gamete interaction using the hemizona assay. RESULT(S) Grp78 was found in the surface of oviduct epithelial cells. Soluble Grp78 was detected in oviductal fluids from women in the periovulatory period and in oviductal tissue conditioned medium. Rec-Grp78 was able to bind to the sperm acrosomal cap, and its presence during gamete interaction led to a decrease in the number of spermatozoa bound to the zona pellucida (ZP). When calcium ions from the incubation medium were replaced by strontium, rec-Grp78 enhanced sperm-ZP interaction. CONCLUSION(S) Grp78 is expressed and secreted by oviduct epithelial cells. The protein would bind to the gametes and may modulate their interaction in a calcium-dependent manner.
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Affiliation(s)
- Clara I Marín-Briggiler
- Instituto de Biología y Medicina Experimental, National Research Council of Argentina (CONICET), University of Buenos Aires, 1428ADN Buenos Aires, Argentina
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Muratori M, Luconi M, Marchiani S, Forti G, Baldi E. Molecular markers of human sperm functions. ACTA ACUST UNITED AC 2009; 32:25-45. [DOI: 10.1111/j.1365-2605.2008.00875.x] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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23
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Gatesy J, Swanson WJ. Adaptive Evolution and Phylogenetic Utility ofAcr(Acrosin), a Rapidly Evolving Mammalian Fertilization Gene. J Mammal 2007. [DOI: 10.1644/05-mamm-s-345r1.1] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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Romanato M, Regueira E, Cameo MS, Baldini C, Calvo L, Calvo JC. Further evidence on the role of heparan sulfate as protamine acceptor during the decondensation of human spermatozoa. Hum Reprod 2005; 20:2784-9. [PMID: 15980005 DOI: 10.1093/humrep/dei124] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND Human spermatozoa decondense in vitro upon exposure to heparin and glutathione. Glutathione is also the disulfide bond reducer in vivo, and heparan sulfate, a functional analogue of heparin, has been proposed as the protamine acceptor. The aim of this study was to evaluate the decondensing ability of chemically modified heparins and different glycosaminoglycans (GAGs) on isolated sperm nuclei in vitro, and to analyse the possible role of different GAGs as protamine acceptors. METHODS Capacitated spermatozoa and isolated sperm nuclei from normospermic semen samples were decondensed in the presence of heparin (or its equivalent) and glutathione. After fixation with glutaraldehyde, the percentage of decondensed spermatozoa and nuclei was determined under phase-contrast. Proteins were extracted from sperm nuclei previously incubated in the presence of gluhathione and different GAGs by incubation with urea-beta-meracptoethanol-NaCl, and analysed by acid polyacrylamide gel electrophoresis. RESULTS The ability of desulfated heparins and other GAGs to decondense isolated nuclei mirrored exactly the decondensation of capacitated spermatozoa, the only difference being the level of maximum decondensation achieved. Heparan sulfate and heparin, but not other GAGs, were able to release protamines from sperm chromatin. CONCLUSIONS Heparan sulfate could be functioning as protamine acceptor in vivo during human sperm nuclear decondensation.
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Affiliation(s)
- Marina Romanato
- Biología de la Reproducción, Instituto de Biología y Medicina Experimental, Universidad de Buenos Aires, Argentina
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Furlong LI, Harris JD, Vazquez-Levin MH. Binding of recombinant human proacrosin/acrosin to zona pellucida (ZP) glycoproteins. I. Studies with recombinant human ZPA, ZPB, and ZPC. Fertil Steril 2005; 83:1780-90. [PMID: 15950651 DOI: 10.1016/j.fertnstert.2004.12.042] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2004] [Revised: 12/13/2004] [Accepted: 12/13/2004] [Indexed: 11/28/2022]
Abstract
OBJECTIVE To characterize proacrosin/acrosin interaction with isolated zona pellucida (ZP) components. DESIGN Prospective study. SETTING Basic research laboratory. PATIENT(S) Recombinant proteins derived from human proacrosin (Rec-40, Rec-30, Rec-20, Rec-10, and Rec-6) and from human ZP glycoproteins (rec-hZPA, ZPB, and ZPC). INTERVENTION(S) In vitro binding assay developed to assess proacrosin/acrosin-ZP interaction. MAIN OUTCOME MEASURE(S) Zona pellucida glycoprotein binding to proacrosin/acrosin; estimation of binding affinity. RESULT(S) Of all ZP proteins, rec-hZPA demonstrated the highest binding activity toward acrosin (Rec-30) (rec-hZPB: 42% of rec-hZPA; rec-hZPC: 39% of rec-hZPA; P<.0005). Rec-hZPA interaction was disturbed by dextran sulphate (75% inhibition with 10 microM), fucose (67% inhibition with 1.5 microM), and mannose (69% inhibition with 333 mM). Comparing binding activity of proacrosin with other N-terminal acrosin fragments, Rec-40 showed 2.6-3 times higher levels. Moreover, saturable high affinity binding of Rec-40 to ZP components was observed (Kd: 34 nM for rec-hZPA, 38 nM for rec-hZPB, 63 nM for rec-hZPC). CONCLUSION(S) The rec-hZPA is the major ZP ligand for human proacrosin/acrosin. The interaction involves mannosyl, fucosyl, and sulfated glycans. Binding sites for rec-hZP would be located both at the N- and C-terminus of proacrosin, revealing a key role of the proenzyme in the interaction.
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Affiliation(s)
- Laura I Furlong
- Instituto de Biología y Medicina Experimental-CONICET-UBA, Buenos Aires, Argentina.
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Chaudhury K, Das T, Chakravarty B, Bhattacharyya AK. Acrosin activity as a potential marker for sperm membrane characteristics in unexplained male infertility. Fertil Steril 2005; 83:104-9. [PMID: 15652894 DOI: 10.1016/j.fertnstert.2004.06.063] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2003] [Revised: 06/11/2004] [Accepted: 06/11/2004] [Indexed: 10/25/2022]
Abstract
OBJECTIVE To evaluate sperm membrane system integrity in unexplained infertile male subjects with three consecutive conception failures on IUI even though semen clinical parameters were normal. DESIGN Prospective study. SETTING Medical biotechnology laboratory, School of Medical Science and Technology IIT Kharagpur, India. PATIENT(S) Twenty-nine patients with unexplained infertility, 17 normal proven-fertile healthy donors, and 21 infertile males with low motility but with other semen parameters remaining normal. INTERVENTION(S) Semen samples were collected from unexplained infertile patients as well as from healthy fertile donors after abstinence of 3-5 days and were analyzed according to World Health Organization guidelines. MAIN OUTCOME MEASURE(S) Release of 5'-nucleotidase (plasma membrane marker), lactate dehydrogenase (mitochondrial marker) and free acrosin, proacrosin, and total acrosin (acrosomal membrane marker). RESULT(S) Plasma membrane integrity and respiratory activity of sperm cells were comparable in all three groups. The proacrosin-acrosin system was adversely affected in unexplained infertile subjects despite high sperm motility. CONCLUSION(S) Total acrosin activity may be considered as a sensitive biochemical marker for clinical evaluation of unexplained infertility in males.
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Affiliation(s)
- Koel Chaudhury
- School of Medical Science and Technology, Indian Institute of Technology, Kharagpur, India.
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Marí SI, Rawe V, Biancotti JC, Charreau EH, Dain L, Vazquez-Levin MH. Biochemical and molecular studies of the proacrosin/acrosin system in patients with unexplained infertility. Fertil Steril 2003; 79 Suppl 3:1676-9. [PMID: 12801583 DOI: 10.1016/s0015-0282(03)00372-8] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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