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Choudhary S, Kumaresan A, Kumar M, Chhillar S, Malik H, Kumar S, Kaushik JK, Datta TK, Mohanty AK. Effect of recombinant and native buffalo OVGP1 on sperm functions and in vitro embryo development: a comparative study. J Anim Sci Biotechnol 2017; 8:69. [PMID: 28883914 PMCID: PMC5580196 DOI: 10.1186/s40104-017-0201-5] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2017] [Accepted: 08/01/2017] [Indexed: 11/25/2022] Open
Abstract
Background An oviduct- specific glycoprotein, OVGP1, is synthesized and secreted by non-ciliated epithelial cells of the mammalian oviduct which provides an essential milieu for reproductive functions. The present study reports the effects of recombinant buffalo OVGP1 that lacks post-translational modifications, and native Buffalo OVGP1 isolated from oviductal tissue, on frozen- thawed sperm functions and in vitro embryo development. Results The proportion of viable sperms was greater (P < 0.05) in the recombinant OVGP1-treated group compared to the native OVGP1-treated group at 2 h, 3 h, and 4 h of incubation. The proportion of motile sperms at 3 h and 4 h of incubation; and membrane- intact sperms at 4 h was greater (P < 0.05) in the native OVGP1-treated group compared to the control and recombinant OVGP1-treated groups. The proportion of capacitated and acrosome- reacted sperms was greater (P < 0.05) in the native OVGP1-treated group compared to the recombinant OVGP1 group at 4 h. The rates of cleavage of embryos and their development to the blastocyst stage were greater (P < 0.05) in the presence of either native or recombinant OVGP1 in comparison to control at 10 μg/mL concentration as compared to 5 or 20 μg/mL. Conclusions The study suggests that both native and recombinant OVGP1 impart a positive effect on various sperm features and in vitro embryo development. However, native OVGP1 was found to have a more pronounced effect in comparison to recombinant non-glycosylated OVGP1 on various sperm functions except viability. Hence, our current findings infer that glycosylation of OVGP1 might be essential in sustaining the sperm functions but not the in vitro embryo development. Electronic supplementary material The online version of this article (doi:10.1186/s40104-017-0201-5) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Suman Choudhary
- Animal Biotechnology Centre, National Dairy Research Institute, Karnal, Haryana 132001 India
| | - A Kumaresan
- Livestock and Production Management Section, National Dairy Research Institute, Karnal, Haryana 132001 India
| | - Manish Kumar
- Animal Biotechnology Centre, National Dairy Research Institute, Karnal, Haryana 132001 India
| | - Shivani Chhillar
- Livestock and Production Management Section, National Dairy Research Institute, Karnal, Haryana 132001 India
| | - Hrudananda Malik
- Animal Biotechnology Centre, National Dairy Research Institute, Karnal, Haryana 132001 India
| | - Sudarshan Kumar
- Animal Biotechnology Centre, National Dairy Research Institute, Karnal, Haryana 132001 India
| | - Jai K Kaushik
- Animal Biotechnology Centre, National Dairy Research Institute, Karnal, Haryana 132001 India
| | - Tirtha K Datta
- Animal Biotechnology Centre, National Dairy Research Institute, Karnal, Haryana 132001 India
| | - Ashok K Mohanty
- Animal Biotechnology Centre, National Dairy Research Institute, Karnal, Haryana 132001 India
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Zhao Y, Yang X, Jia Z, Reid RL, Leclerc P, Kan FWK. Recombinant human oviductin regulates protein tyrosine phosphorylation and acrosome reaction. Reproduction 2016; 152:561-573. [DOI: 10.1530/rep-16-0177] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2016] [Accepted: 08/31/2016] [Indexed: 12/11/2022]
Abstract
The mammalian oviduct synthesizes and secretes a major glycoprotein known as oviductin (OVGP1), which has been shown to interact with gametes and early embryos. Here we report the use of recombinant DNA technology to produce, for the first time, the secretory form of human OVGP1 in HEK293 cells. HEK293 colonies stably expressing recombinant human OVGP1 (rHuOVGP1) were established by transfecting cells with an expression vector pCMV6-Entry constructed with OVGP1 cDNA. Large quantities of rHuOVGP1 were obtained from the stably transfected cells using the CELLSPIN cell cultivation system. A two-step purification system was carried out to yield rHuOVGP1 with a purity of >95%. Upon gel electrophoresis, purified rHuOVGP1 showed a single band corresponding to the 120–150 kDa size range of human OVGP1. Mass spectrometric analysis of the purified rHuOVGP1 revealed its identity as human oviductin. Immunofluorescence showed the binding of rHuOVGP1 to different regions of human sperm cell surfaces in various degrees of intensity. Prior treatment of sperm with 1% Triton X-100 altered the immunostaining pattern of rHuOVGP1 with an intense immunostaining over the equatorial segment and post-acrosomal region as well as along the length of the tail. Addition of rHuOVGP1 in the capacitating medium further enhanced tyrosine phosphorylation of sperm proteins in a time-dependent manner. After 4-h incubation in the presence of rHuOVGP1, the number of acrosome-reacted sperm induced by calcium ionophore significantly increased. The successful production of rHuOVGP1 can now facilitate the study of the role of human OVGP1 in fertilization and early embryo development.
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Pluta K, McGettigan PA, Reid CJ, Browne JA, Irwin JA, Tharmalingam T, Corfield A, Baird A, Loftus BJ, Evans ACO, Carrington SD. Molecular aspects of mucin biosynthesis and mucus formation in the bovine cervix during the periestrous period. Physiol Genomics 2012; 44:1165-78. [DOI: 10.1152/physiolgenomics.00088.2012] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Mucus within the cervical canal represents a hormonally regulated barrier that reconciles the need to exclude the vaginal microflora from the uterus during progesterone dominance, while permitting sperm transport at estrus. Its characteristics change during the estrous cycle to facilitate these competing functional requirements. Hydrated mucin glycoproteins synthesized by the endocervical epithelium form the molecular scaffold of this mucus. This study uses the bovine cervix as a model to examine functional groups of genes related to mucin biosynthesis and mucus production over the periestrous period when functional changes in cervical barrier function are most prominent. Cervical tissue samples were collected from 30 estrus synchronized beef heifers. Animals were slaughtered in groups starting 12 h after the withdrawal of intravaginal progesterone releasing devices (controlled internal drug releases) until 7 days postonset of estrus (luteal phase). Subsequent groupings represented proestrus, early estrus, late estrus, metestrus, and finally the early luteal phase. Tissues were submitted to next generation RNA-seq transcriptome analysis. We identified 114 genes associated with biosynthesis and intracellular transport of mucins, and postsecretory modifications of cervical; 53 of these genes showed at least a twofold change in one or more experimental group in relation to onset of estrus, and the differences between groups were significant ( P < 0.05). The majority of these genes showed the greatest alteration in their expression in the 48 h postestrus and luteal phase groups.
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Affiliation(s)
- Katarzyna Pluta
- Veterinary Sciences Centre, University College Dublin, Belfield, Dublin, Ireland
| | - Paul A. McGettigan
- Veterinary Sciences Centre, University College Dublin, Belfield, Dublin, Ireland
| | - Colm J. Reid
- Veterinary Sciences Centre, University College Dublin, Belfield, Dublin, Ireland
| | - John A. Browne
- Veterinary Sciences Centre, University College Dublin, Belfield, Dublin, Ireland
| | - Jane A. Irwin
- Veterinary Sciences Centre, University College Dublin, Belfield, Dublin, Ireland
| | - Tharmala Tharmalingam
- UCD Conway Institute of Biomolecular and Biomedical Research, University College Dublin, Belfield, Dublin, Ireland; and
| | | | - Alan Baird
- Veterinary Sciences Centre, University College Dublin, Belfield, Dublin, Ireland
| | - Brendan J. Loftus
- UCD Conway Institute of Biomolecular and Biomedical Research, University College Dublin, Belfield, Dublin, Ireland; and
| | - Alexander C. O. Evans
- Veterinary Sciences Centre, University College Dublin, Belfield, Dublin, Ireland
- UCD Conway Institute of Biomolecular and Biomedical Research, University College Dublin, Belfield, Dublin, Ireland; and
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Gill DJ, Clausen H, Bard F. Location, location, location: new insights into O-GalNAc protein glycosylation. Trends Cell Biol 2011; 21:149-58. [PMID: 21145746 DOI: 10.1016/j.tcb.2010.11.004] [Citation(s) in RCA: 174] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2010] [Revised: 11/10/2010] [Accepted: 11/11/2010] [Indexed: 01/04/2023]
Abstract
O-GalNAc glycosylation of proteins confers essential structural, protective and signaling roles in eumetazoans. Addition of O-glycans onto proteins is an extremely complex process that regulates both sites of attachment and the types of oligosaccharides added. Twenty distinct polypeptide GalNAc-transferases (GalNAc-Ts) initiate O-glycosylation and fine-tuning their expression provides a mechanism for regulating this action. Recently, a new mode of regulation has emerged where activation of Src kinase selectively redistributes Golgi-localized GalNAc-Ts to the ER. This relocalization results in a strong increase in the density of O-glycan decoration. In this review, we discuss how different mechanisms can regulate the number and the types of O-glycans decorating proteins. In addition, we speculate how Src-dependent relocation of GalNAc-Ts could play an important role in cancerous cellular transformation.
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Affiliation(s)
- David J Gill
- Institute of Molecular and Cell Biology (IMCB), Proteos, 61 Biopolis Drive, Singapore, 138673
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Cheng PW, Radhakrishnan P. Mucin O-glycan branching enzymes: structure, function, and gene regulation. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2011; 705:465-92. [PMID: 21618125 DOI: 10.1007/978-1-4419-7877-6_25] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Pi-Wan Cheng
- Department of Biochemistry and Molecular Biology, College of Medicine and Eppley Institute for Research in Cancer and Allied Diseases, University of Nebraska Medical Center, Omaha, NE 68198-5870, USA.
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Avilés M, Gutiérrez-Adán A, Coy P. Oviductal secretions: will they be key factors for the future ARTs? Mol Hum Reprod 2010; 16:896-906. [PMID: 20584881 DOI: 10.1093/molehr/gaq056] [Citation(s) in RCA: 174] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
A variety of evolutionary processes has led to the development of different organs to ensure that internal fertilization occur successfully. Fallopian tubes are a particularly interesting example of such organs. Some of the key events during fertilization and early embryo development occur in the oviduct. Knowledge of the different components described in the oviduct is extensive. Oviductal components include hormones, growth factors and their receptors that have important roles in the physiology of the oviduct and embryo development. Other oviductal factors protect the gamete and the embryos against oxidative stress and pathogens. Different proteins and enzymes are present in the oviductal fluid and have the ability to interact with the oocyte and the sperm before the fertilization occurs. Of special interest is the oviduct-specific glycoprotein (OVGP1), a glycoprotein that is conserved in different mammals, and its association with the zona pellucida (ZP). Interaction of the oocyte with oviductal secretions leads us to emphasize the concept of 'ZP maturation' within the oviduct. The ZP changes produced in the oviduct result in an increased efficiency of the in vitro fertilization technique in some animal models, contributing in particular to the control of polyspermy and suggesting that a similar role could be played by oviductal factors in human beings. Finally, attention should be given to the presence in the oviductal fluid of several embryotrophic factors and their importance in relation to the in vivo versus in vitro developmental ability of the embryos.
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Affiliation(s)
- Manuel Avilés
- Department of Cell Biology and Histology, Faculty of Medicine, University of Murcia, Murcia, Spain.
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Abstract
A block to polyspermy is required for successful fertilisation and embryo survival in mammals. A higher incidence of polyspermy is observed during in vitro fertilisation (IVF) compared with the in vivo situation in several species. Two groups of mechanisms have traditionally been proposed as contributing to the block to polyspermy in mammals: oviduct-based mechanisms, avoiding a massive arrival of spermatozoa in the proximity of the oocyte, and egg-based mechanisms, including changes in the membrane and zona pellucida (ZP) in reaction to the fertilising sperm. Additionally, a mechanism has been described recently which involves modifications of the ZP in the oviduct before the oocyte interacts with spermatozoa, termed "pre-fertilisation zona pellucida hardening". This mechanism is mediated by the oviductal-specific glycoprotein (OVGP1) secreted by the oviductal epithelial cells around the time of ovulation, and is reinforced by heparin-like glycosaminoglycans (S-GAGs) present in oviductal fluid. Identification of the molecules contributing to the ZP modifications in the oviduct will improve our knowledge of the mechanisms of sperm-egg interaction and could help to increase the success of IVF systems in domestic animals and humans.
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Affiliation(s)
- Pilar Coy
- Department of Physiology, Faculty of Veterinary, University of Murcia, Spain.
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Coy P, Cánovas S, Mondéjar I, Saavedra MD, Romar R, Grullón L, Matás C, Avilés M. Oviduct-specific glycoprotein and heparin modulate sperm-zona pellucida interaction during fertilization and contribute to the control of polyspermy. Proc Natl Acad Sci U S A 2008; 105:15809-14. [PMID: 18838686 PMCID: PMC2572915 DOI: 10.1073/pnas.0804422105] [Citation(s) in RCA: 152] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2008] [Indexed: 11/18/2022] Open
Abstract
Polyspermy is an important anomaly of fertilization in placental mammals, causing premature death of the embryo. It is especially frequent under in vitro conditions, complicating the successful generation of viable embryos. A block to polyspermy develops as a result of changes after sperm entry (i.e., cortical granule exocytosis). However, additional factors may play an important role in regulating polyspermy by acting on gametes before sperm-oocyte interaction. Most studies have used rodents as models, but ungulates may differ in mechanisms preventing polyspermy. We hypothesize that zona pellucida (ZP) changes during transit of the oocyte along the oviductal ampulla modulate the interaction with spermatozoa, contributing to the regulation of polyspermy. We report here that periovulatory oviductal fluid (OF) from sows and heifers increases (both, con- and heterospecifically) ZP resistance to digestion with pronase (a parameter commonly used to measure the block to polyspermy), changing from digestion times of approximately 1 min (pig) or 2 min (cattle) to 45 min (pig) or several hours (cattle). Exposure of oocytes to OF increases monospermy after in vitro fertilization in both species, and in pigs, sperm-ZP binding decreases. The resistance of OF-exposed oocytes to pronase was abolished by exposure to heparin-depleted medium; in a medium with heparin it was not altered. Proteomic analysis of the content released in the heparin-depleted medium after removal of OF-exposed oocytes allowed the isolation and identification of oviduct-specific glycoprotein. Thus, an oviduct-specific glycoprotein-heparin protein complex seems to be responsible for ZP changes in the oviduct before fertilization, affecting sperm binding and contributing to the regulation of polyspermy.
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Affiliation(s)
- Pilar Coy
- Physiology of Reproduction Group, Departamento de Fisiología, Facultad de Veterinaria, Universidad de Murcia, Murcia 30071, Spain.
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Hashimoto M, Tan S, Mori N, Cheng H, Cheng PW. Mucin biosynthesis: Molecular cloning and expression of mouse mucus-type core 2 β1,6 N-acetylglucosaminyltransferase. Glycobiology 2007; 17:994-1006. [PMID: 17591617 DOI: 10.1093/glycob/cwm068] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Secreted mucins protect the underlying epithelium by serving as the major determinant of the rheological property of mucus secretion and the receptors for pathogens. These functions can be affected by the three branch structures, including core 2, core 4, and blood group I, which are synthesized by the mucus-type core 2 beta1,6 N-acetylglucosaminyltransferase (C2GnT-M). Decreased activity of this enzyme and expression of this gene have been found in colorectal cancer, which supports the important role of this enzyme in the protective functions of secreted mucins. We cloned full-length mouse (m) C2GnT-M cDNAs and showed that the deduced amino acid sequence was homologous to those of other C2GnT-Ms. The recombinant protein generated by mC2GnT-M cDNA exhibited core 2, core 4, and blood group I enzyme activities with a ratio of 1.00:0.46:1.05. We identified two different size transcripts by rapid amplification of cDNA ends and RT-PCR. Derived from the 6.6 kb mC2GnT-M gene composed of three exons and two introns, these two transcripts were intronless and differed by the length of the 3' untranslated region. In addition, exon 2 was found to be heterogeneous in size. This gene was highly expressed in the gastrointestinal tract, including colon, stomach, and small intestine. Antibodies generated against mC2GnT-M identified this enzyme in the goblet cells and other mucus cells/glands. This report provides the basis for further characterization of the regulation of mC2GnT-M gene expression and the biological functions of this gene.
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Affiliation(s)
- Mitsuyoshi Hashimoto
- Department of Pathology, Nagoya University Graduate School of Medicine, Nagoya, Japan
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Merchán M, Peiró R, Santacreu MA, Francino O, Folch JM. Rabbit oviductal glycoprotein 1 gene: Genomic organization polymorphism analysis and mRNA expression. Mol Reprod Dev 2007; 74:687-93. [PMID: 17154299 DOI: 10.1002/mrd.20650] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The OVGP1 is an oviductal glycoprotein that has positive effects on fertilization and early embryo development. We have amplified and sequenced the rabbit OVGP1 gene, which spans 13 kb and it is formed by 11 exons and 10 introns. To find polymorphisms, a region encompassing the promoter to intron 1 has been sequenced in 22 rabbits of the H, V, R, and A Spanish lines. We have identified five SNPs and one triallelic microsatellite in the promoter region, and three SNPs and one dinucleotide INDEL in intron 1. The 10 polymorphic sites cosegregate forming two haplotypes. The allelic frequencies of the microsatellite have been analyzed in 98 rabbits belonging to the four lines and the three alleles were found in all the lines. The relative quantification of the OVGP1 mRNA in liver, kidneys, lungs, skeletal muscle, ovary, uterus, and oviduct reveals that the OVGP1 expression in the oviduct is 5,500 higher than in the uterus or ovary, whereas a low level of basal expression is detected in non-reproductive tissues. We have also compared the mRNA expression between samples of oviducts taken from non-mated rabbit and samples of oviducts at different stages of the early pregnancy, but no significant differences were found.
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Affiliation(s)
- Maribel Merchán
- Departament de Ciència Animal i dels Aliments, Facultat de Veterinària, Universitat Autònoma de Barcelona, Bellaterra, Spain.
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