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Selvaraju S, Ramya L, Swathi D, Archana SS, Lavanya M, Krishnappa B, Binsila BK, Mahla AS, Arangasamy A, Andonissamy J, Kumar P, Sharma RK. Cryostress induces fragmentation and alters the abundance of sperm transcripts associated with fertilizing competence and reproductive processes in buffalo. Cell Tissue Res 2023:10.1007/s00441-023-03764-8. [PMID: 37079096 DOI: 10.1007/s00441-023-03764-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2022] [Accepted: 03/09/2023] [Indexed: 04/21/2023]
Abstract
The study aimed to assess the influence of cryostress on RNA integrity and functional significance in sperm fertilizing ability. The fresh and post-thawed buffalo sperm (n = 6 each) samples were evaluated for their functional attributes, and sperm total RNA was subjected to transcriptome sequencing followed by validation using real-time PCR and dot blot. Overall, 6911 genes had an expression of FPKM > 1, and among these 431 genes were abundantly expressed (FPKM > 20) in buffalo sperm. These abundantly expressed genes regulate reproductive functions such as sperm motility (TEKT2, SPEM1, and PRM3, FDR = 1.10E-08), fertilization (EQTN, PLCZ1, and SPESP1, FDR = 7.25E-06) and the developmental process involved in reproduction (SPACA1, TNP1, and YBX2, FDR = 7.21E-06). Cryopreservation significantly (p < 0.05) affected the structural and functional membrane integrities of sperm. The expression levels of transcripts that regulate the metabolic activities and fertility-related functions were compromised during cryopreservation. Interestingly, cryostress induces the expression of genes involved (p < 0.05) in chemokine signaling (CX3CL1, CCL20, and CXCR4), G-protein coupled receptor binding (ADRB1, EDN1, and BRS3), translation (RPS28, MRPL28, and RPL18A), oxidative phosphorylation (ND1, ND2, and COX2), response to reactive oxygen species (GLRX2, HYAL2, and EDN1), and immune responses (CX3CL1, CCL26, and TBXA2R). These precociously expressed genes during cryopreservation alter the signaling mechanisms that govern sperm functional competence and can impact fertilization and early embryonic development.
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Affiliation(s)
- Sellappan Selvaraju
- Reproductive Physiology Laboratory, ICAR-National Institute of Animal Nutrition and Physiology, Adugodi, Bengaluru, 560030, India.
| | - Laxman Ramya
- Reproductive Physiology Laboratory, ICAR-National Institute of Animal Nutrition and Physiology, Adugodi, Bengaluru, 560030, India
| | - Divakar Swathi
- Reproductive Physiology Laboratory, ICAR-National Institute of Animal Nutrition and Physiology, Adugodi, Bengaluru, 560030, India
| | | | - Maharajan Lavanya
- Reproductive Physiology Laboratory, ICAR-National Institute of Animal Nutrition and Physiology, Adugodi, Bengaluru, 560030, India
| | - Balaganur Krishnappa
- Reproductive Physiology Laboratory, ICAR-National Institute of Animal Nutrition and Physiology, Adugodi, Bengaluru, 560030, India
| | - Bala Krishnan Binsila
- Reproductive Physiology Laboratory, ICAR-National Institute of Animal Nutrition and Physiology, Adugodi, Bengaluru, 560030, India
| | - Ajit Singh Mahla
- Reproductive Physiology Laboratory, ICAR-National Institute of Animal Nutrition and Physiology, Adugodi, Bengaluru, 560030, India
- Physiology and Biochemistry Division, ICAR-Central Sheep and Wool Research Institute, Avikanagar, Rajasthan, 304501, India
| | - Arunachalam Arangasamy
- Reproductive Physiology Laboratory, ICAR-National Institute of Animal Nutrition and Physiology, Adugodi, Bengaluru, 560030, India
| | - Jerome Andonissamy
- Animal Physiology and Reproduction Division, ICAR-Central Institute for Research on Buffaloes, Hisar, Haryana, 125001, India
| | - Pradeep Kumar
- Animal Physiology and Reproduction Division, ICAR-Central Institute for Research on Buffaloes, Hisar, Haryana, 125001, India
| | - Rakesh Kumar Sharma
- Animal Physiology and Reproduction Division, ICAR-Central Institute for Research on Buffaloes, Hisar, Haryana, 125001, India
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Strączyńska P, Papis K, Morawiec E, Czerwiński M, Gajewski Z, Olejek A, Bednarska-Czerwińska A. Signaling mechanisms and their regulation during in vivo or in vitro maturation of mammalian oocytes. Reprod Biol Endocrinol 2022; 20:37. [PMID: 35209923 PMCID: PMC8867761 DOI: 10.1186/s12958-022-00906-5] [Citation(s) in RCA: 28] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Accepted: 02/06/2022] [Indexed: 12/18/2022] Open
Abstract
In vitro fertilization (IVF) is currently one of the most effective methods of infertility treatment. An alternative to commonly used ovarian hyperstimulation can become extracorporeal maturation of oocytes (in vitro maturation; IVM). Fertilization and normal development of the embryo depends on the cytoplasmic, nuclear and genomic maturity of the oocyte. The microenvironment of the ovarian follicle and maternal signals, which mediate bidirectional communication between granulosa, cumulus and oocyte cells, influence the growth, maturation and acquisition of oocyte development capability. During oogenesis in mammals, the meiosis is inhibited in the oocyte at the prophase I of the meiotic division due to the high cAMP level. This level is maintained by the activity of C-type natriuretic peptide (CNP, NPPC) produced by granulosa cells. The CNP binds to the NPR2 receptor in cumulus cells and is responsible for the production of cyclic guanosine monophosphate (cGMP). The cGMP penetrating into the oocyte through gap junctions inhibits phosphodiesterase 3A (PDE3A), preventing cAMP hydrolysis responsible for low MPF activity. The LH surge during the reproductive cycle reduces the activity of the CNP/NPR2 complex, which results in a decrease in cGMP levels in cumulus cells and consequently in the oocyte. Reduced cGMP concentration unblocks the hydrolytic activity of PDE3A, which decreases cAMP level inside the oocyte. This leads to the activation of MPF and resumption of meiosis. The latest IVM methods called SPOM, NFSOM or CAPA IVM consist of two steps: prematuration and maturation itself. Taking into account the role of cAMP in inhibiting and then unblocking the maturation of oocytes, they have led to a significant progress in terms of the percentage of mature oocytes in vitro and the proportion of properly developed embryos in both animals and humans.
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Affiliation(s)
- Patrycja Strączyńska
- Department of Gynecology, Obstetrics and Oncological Gynecology in Bytom, Medical University of Silesia, Katowice, Poland
- Faculty of Medical Sciences in Zabrze, Medical University of Silesia, Katowice, Poland
- Gyncentrum Fertility Clinic, Katowice, Poland
| | - Krzysztof Papis
- Center for Translational Medicine, Warsaw University of Life Sciences, Warsaw, Poland.
- nOvum Fertility Clinic, Warsaw, Poland.
| | - Emilia Morawiec
- Gyncentrum Fertility Clinic, Katowice, Poland
- Department of Microbiology, Faculty of Medicine in Zabrze, University of Technology in Katowice, Katowice, Poland
| | | | - Zdzisław Gajewski
- Center for Translational Medicine, Warsaw University of Life Sciences, Warsaw, Poland
| | - Anita Olejek
- Department of Gynecology, Obstetrics and Oncological Gynecology in Bytom, Medical University of Silesia, Katowice, Poland
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Sahoo B, Choudhary RK, Sharma P, Choudhary S, Gupta MK. Significance and Relevance of Spermatozoal RNAs to Male Fertility in Livestock. Front Genet 2021; 12:768196. [PMID: 34956322 PMCID: PMC8696160 DOI: 10.3389/fgene.2021.768196] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Accepted: 11/15/2021] [Indexed: 12/11/2022] Open
Abstract
Livestock production contributes to a significant part of the economy in developing countries. Although artificial insemination techniques brought substantial improvements in reproductive efficiency, male infertility remains a leading challenge in livestock. Current strategies for the diagnosis of male infertility largely depend on the evaluation of semen parameters and fail to diagnose idiopathic infertility in most cases. Recent evidences show that spermatozoa contains a suit of RNA population whose profile differs between fertile and infertile males. Studies have also demonstrated the crucial roles of spermatozoal RNA (spRNA) in spermatogenesis, fertilization, and early embryonic development. Thus, the spRNA profile may serve as unique molecular signatures of fertile sperm and may play pivotal roles in the diagnosis and treatment of male fertility. This manuscript provides an update on various spRNA populations, including protein-coding and non-coding RNAs, in livestock species and their potential role in semen quality, particularly sperm motility, freezability, and fertility. The contribution of seminal plasma to the spRNA population is also discussed. Furthermore, we discussed the significance of rare non-coding RNAs (ncRNAs) such as long ncRNAs (lncRNAs) and circular RNAs (circRNAs) in spermatogenic events.
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Affiliation(s)
- Bijayalaxmi Sahoo
- Department of Biotechnology and Medical Engineering, National Institute of Technology Rourkela, Rourkela, India
| | - Ratan K Choudhary
- College of Animal Biotechnology, Guru Angad Dev Veterinary and Animal Sciences University, Ludhiana, India
| | - Paramajeet Sharma
- College of Animal Biotechnology, Guru Angad Dev Veterinary and Animal Sciences University, Ludhiana, India
| | - Shanti Choudhary
- College of Animal Biotechnology, Guru Angad Dev Veterinary and Animal Sciences University, Ludhiana, India
| | - Mukesh Kumar Gupta
- Department of Biotechnology and Medical Engineering, National Institute of Technology Rourkela, Rourkela, India
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Gutiérrez JAB, Cardona Maya WD. In Silico Analysis of Sperm From Ejaculates with Different Semen Characteristics. J Reprod Infertil 2021; 22:210-215. [PMID: 34900641 PMCID: PMC8607880 DOI: 10.18502/jri.v22i3.6721] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2020] [Accepted: 09/20/2020] [Indexed: 11/24/2022] Open
Abstract
Background: Male infertility is associated with altered characteristics of the sperm within the ejaculate. It is possible to find molecular explanations for the observed phenotypes and their consequences. This study aimed to analyze, using a specialized software, a gene set of transcriptomic data from different types of ejaculates. Methods: Data from ejaculate samples categorized as normal, oligospermia, and teratozoospermia were obtained from Gene Expression Omnibus (GEO). After normalization, the data average for each sample category was calculated and analyzed independently using Ingenuity Pathway Analysis (IPA). Results: Five important canonical pathways are involved in normal and altered semen samples (Oligospermia and teratozoospermia) except sirtuin signaling and mitochondrial dysfunction pathways. The five most important biological processes are identified in all semen phenotypes, but the only difference is the genes connected with initiation of RNA transcription in oligospermic and asthenospermic samples. Conclusion: Surprisingly, different types of ejaculates share many pathways and biological processes; sperm proteomics as a new global approach gives clues for the development of strategies to explain the reason for observed phenotypes of ejaculated spermatozoa, their possible effect on fertility, and for implementing research strategies in the context of infertility diagnosis and treatment.
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Affiliation(s)
- Jesús Alfredo Berdugo Gutiérrez
- - Reproduction Group, Department of Microbiology and Parasitology, Medical School, University of Antioquia, Antioquia, Colombia
| | - Walter D Cardona Maya
- - Reproduction Group, Department of Microbiology and Parasitology, Medical School, University of Antioquia, Antioquia, Colombia
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Dahlen CR, Borowicz PP, Ward AK, Caton JS, Czernik M, Palazzese L, Loi P, Reynolds LP. Programming of Embryonic Development. Int J Mol Sci 2021; 22:11668. [PMID: 34769097 PMCID: PMC8583791 DOI: 10.3390/ijms222111668] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Revised: 09/22/2021] [Accepted: 09/24/2021] [Indexed: 01/01/2023] Open
Abstract
Assisted reproductive techniques (ART) and parental nutritional status have profound effects on embryonic/fetal and placental development, which are probably mediated via "programming" of gene expression, as reflected by changes in their epigenetic landscape. Such epigenetic changes may underlie programming of growth, development, and function of fetal organs later in pregnancy and the offspring postnatally, and potentially lead to long-term changes in organ structure and function in the offspring as adults. This latter concept has been termed developmental origins of health and disease (DOHaD), or simply developmental programming, which has emerged as a major health issue in animals and humans because it is associated with an increased risk of non-communicable diseases in the offspring, including metabolic, behavioral, and reproductive dysfunction. In this review, we will briefly introduce the concept of developmental programming and its relationship to epigenetics. We will then discuss evidence that ART and periconceptual maternal and paternal nutrition may lead to epigenetic alterations very early in pregnancy, and how each pregnancy experiences developmental programming based on signals received by and from the dam. Lastly, we will discuss current research on strategies designed to overcome or minimize the negative consequences or, conversely, to maximize the positive aspects of developmental programming.
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Affiliation(s)
- Carl R. Dahlen
- Center for Nutrition and Pregnancy, Department of Animal Sciences, North Dakota State University, Fargo, ND 58108, USA; (C.R.D.); (P.P.B.); (A.K.W.); (J.S.C.)
| | - Pawel P. Borowicz
- Center for Nutrition and Pregnancy, Department of Animal Sciences, North Dakota State University, Fargo, ND 58108, USA; (C.R.D.); (P.P.B.); (A.K.W.); (J.S.C.)
| | - Alison K. Ward
- Center for Nutrition and Pregnancy, Department of Animal Sciences, North Dakota State University, Fargo, ND 58108, USA; (C.R.D.); (P.P.B.); (A.K.W.); (J.S.C.)
| | - Joel S. Caton
- Center for Nutrition and Pregnancy, Department of Animal Sciences, North Dakota State University, Fargo, ND 58108, USA; (C.R.D.); (P.P.B.); (A.K.W.); (J.S.C.)
| | - Marta Czernik
- Faculty of Veterinary Medicine, University of Teramo, 64100 Teramo, Italy; (M.C.); (P.L.)
| | - Luca Palazzese
- Institute of Genetics and Animal Biotechnology of the Polish Academy of Sciences, Warsaw, Jastrzębiec, 05-552 Magdalenka, Poland;
| | - Pasqualino Loi
- Faculty of Veterinary Medicine, University of Teramo, 64100 Teramo, Italy; (M.C.); (P.L.)
| | - Lawrence P. Reynolds
- Center for Nutrition and Pregnancy, Department of Animal Sciences, North Dakota State University, Fargo, ND 58108, USA; (C.R.D.); (P.P.B.); (A.K.W.); (J.S.C.)
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Khan IM, Cao Z, Liu H, Khan A, Rahman SU, Khan MZ, Sathanawongs A, Zhang Y. Impact of Cryopreservation on Spermatozoa Freeze-Thawed Traits and Relevance OMICS to Assess Sperm Cryo-Tolerance in Farm Animals. Front Vet Sci 2021; 8:609180. [PMID: 33718466 PMCID: PMC7947673 DOI: 10.3389/fvets.2021.609180] [Citation(s) in RCA: 48] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2020] [Accepted: 02/01/2021] [Indexed: 12/12/2022] Open
Abstract
Sperm cryopreservation is a powerful tool for the livestock breeding program. Several technical attempts have been made to enhance the efficiency of spermatozoa cryopreservation in different farm animal species. However, it is well-recognized that mammalian spermatozoa are susceptible to cryo-injury caused by cryopreservation processes. Moreover, the factors leading to cryo-injuries are complicated, and the cryo-damage mechanism has not been methodically explained until now, which directly influences the quality of frozen–thawed spermatozoa. Currently, the various OMICS technologies in sperm cryo-biology have been conducted, particularly proteomics and transcriptomics studies. It has contributed while exploring the molecular alterations caused by cryopreservation, identification of various freezability markers and specific proteins that could be added to semen diluents before cryopreservation to improve sperm cryo-survival. Therefore, understanding the cryo-injury mechanism of spermatozoa is essential for the optimization of current cryopreservation processes. Recently, the application of newly-emerged proteomics and transcriptomics technologies to study the effects of cryopreservation on sperm is becoming a hotspot. This review detailed an updated overview of OMICS elements involved in sperm cryo-tolerance and freeze-thawed quality. While also detailed a mechanism of sperm cryo-injury and utilizing OMICS technology that assesses the sperm freezability potential biomarkers as well as the accurate classification between the excellent and poor freezer breeding candidate.
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Affiliation(s)
- Ibrar Muhammad Khan
- Anhui Provincial Laboratory of Local Livestock and Poultry Genetical Resource Conservation and Breeding, College of Animal Science and Technology, Anhui Agricultural University, Hefei, China
| | - Zubing Cao
- Anhui Provincial Laboratory of Local Livestock and Poultry Genetical Resource Conservation and Breeding, College of Animal Science and Technology, Anhui Agricultural University, Hefei, China
| | - Hongyu Liu
- Anhui Provincial Laboratory of Local Livestock and Poultry Genetical Resource Conservation and Breeding, College of Animal Science and Technology, Anhui Agricultural University, Hefei, China
| | - Adnan Khan
- Shenzhen Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Genome Analysis Laboratory of the Ministry of Agriculture, Agriculture Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen, China
| | - Sajid Ur Rahman
- Key Laboratory of Animal Parasitology of Ministry of Agriculture, Laboratory of Quality and Safety Risk Assessment for Animal Products on Biohazards (Shanghai) of Ministry of Agricultural Sciences, Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai, China
| | - Muhammad Zahoor Khan
- State Key Laboratory of Animal Nutrition, Beijing Engineering Technology Research Center of Raw Milk Quality and Safety Control, College of Animal Science and Technology, China Agriculture University, Beijing, China
| | - Anucha Sathanawongs
- Department of Veterinary Biosciences and Veterinary Public Health, Faculty of Veterinary Medicine, Chiang Mai University, Chiang Mai, Thailand
| | - Yunhai Zhang
- Anhui Provincial Laboratory of Local Livestock and Poultry Genetical Resource Conservation and Breeding, College of Animal Science and Technology, Anhui Agricultural University, Hefei, China
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Daigneault BW. Dynamics of paternal contributions to early embryo development in large animals. Biol Reprod 2020; 104:274-281. [PMID: 32997138 DOI: 10.1093/biolre/ioaa182] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Revised: 09/21/2020] [Accepted: 09/25/2020] [Indexed: 12/31/2022] Open
Abstract
This review focuses on current knowledge of paternal contributions to preimplantation embryonic development with particular emphasis on large animals. Specifically, the included content aims to summarize genomic and epigenomic contributions of paternally expressed genes, their regulation, and chromatin structure that are indispensable for early embryo development. The accumulation of current knowledge will summarize conserved allelic function among species to include functional molecular and genomic studies across large domestic animals in context with reference to founding experimental models.
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Long JA. The ‘omics’ revolution: Use of genomic, transcriptomic, proteomic and metabolomic tools to predict male reproductive traits that impact fertility in livestock and poultry. Anim Reprod Sci 2020; 220:106354. [DOI: 10.1016/j.anireprosci.2020.106354] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2020] [Revised: 03/20/2020] [Accepted: 03/21/2020] [Indexed: 12/17/2022]
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Ing NH, Konganti K, Ghaffari N, Johnson CD, Forrest DW, Love CC, Varner DD. Identification and quantification of coding and long non-coding RNAs in stallion spermatozoa separated by density. Andrology 2020; 8:1409-1418. [PMID: 32243084 DOI: 10.1111/andr.12791] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2019] [Revised: 03/04/2020] [Accepted: 03/23/2020] [Indexed: 01/28/2023]
Abstract
BACKGROUND It is not unusual for stallions to have fertility problems. For many, artificial insemination with more dense spermatozoa (isolated by density gradient centrifugation) results in greater pregnancy rates compared with the rates when using unfractionated spermatozoa. RNAs in spermatozoa delivered to the oocyte at conception are required for embryo development. Novel molecular assays of spermatozoa that reflect function are needed to predict the fertility of stallions. OBJECTIVES To describe and compare the RNA populations in more dense and less dense spermatozoa from stallions. MATERIALS AND METHODS Spermatozoa from five stallions were separated into more dense and less dense populations by density gradient centrifugation. Complementary DNA libraries were made from each of the ten total RNA samples after ribosomal RNA removal. Next-generation sequencing characterized the RNA populations in more and less dense spermatozoa. Quantitative reverse transcription-PCR was used to confirm differential expression of selected RNAs. RESULTS Stallion spermatozoa contain 11 215 RNAs, with the most prevalent RNA being a 1492 base long non-coding RNA. The levels of 159 RNAs were greater in more dense spermatozoa, while levels of seven other RNAs were greater in less dense spermatozoa. Quantitative reverse transcription-PCR confirmed the threefold greater levels of solute carrier family 26 member 8 (SLC26A8) mRNA in less dense spermatozoa, and sixfold and threefold greater expression levels of the SCP2 sterol binding domain containing 1 (SCP2D1) and spermatogenesis-associated protein 31D1 (SPATA31D1) mRNAs in more dense spermatozoa, respectively. DISCUSSION AND CONCLUSION We identified 11 215 RNAs in stallion spermatozoa and 166 with differential expression between more dense and less dense fractions. Many prevalent RNAs were also found in bull, boar, and human spermatozoa. Many differentially expressed RNAs are known to be testis- or spermatozoa-specific. Our results may lead to identification of an RNA population in spermatozoa that is optimal for establishing successful pregnancies.
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Affiliation(s)
- Nancy H Ing
- Department of Animal Science, Texas A&M University, College Station, TX, USA
| | - Kranti Konganti
- Texas A&M Institute for Genome Sciences and Society, Texas A&M University, College Station, TX, USA
| | - Noushin Ghaffari
- AgriLife Genomics and Bioinformatics, Texas A&M University, College Station, TX, USA.,Roy G. Perry College of Engineering, Prairie View A&M University, Prairie View, TX, USA
| | - Charles D Johnson
- AgriLife Genomics and Bioinformatics, Texas A&M University, College Station, TX, USA
| | - David W Forrest
- Department of Animal Science, Texas A&M University, College Station, TX, USA
| | - Charles C Love
- Large Animal Clinical Sciences, Texas A&M University, College Station, TX, USA
| | - Dickson D Varner
- Large Animal Clinical Sciences, Texas A&M University, College Station, TX, USA
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Gross N, Strillacci MG, Peñagaricano F, Khatib H. Characterization and functional roles of paternal RNAs in 2-4 cell bovine embryos. Sci Rep 2019; 9:20347. [PMID: 31889064 PMCID: PMC6937301 DOI: 10.1038/s41598-019-55868-3] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2019] [Accepted: 12/03/2019] [Indexed: 12/26/2022] Open
Abstract
Embryos utilize oocyte-donated RNAs until they become capable of producing RNAs through embryonic genome activation (EGA). The sperm's influence over pre-EGA RNA content of embryos remains unknown. Recent studies have revealed that sperm donate non-genomic components upon fertilization. Thus, sperm may also contribute to RNA presence in pre-EGA embryos. The first objective of this study was to investigate whether male fertility status is associated with the RNAs present in the bovine embryo prior to EGA. A total of 65 RNAs were found to be differentially expressed between 2-4 cell bovine embryos derived from high and low fertility sires. Expression patterns were confirmed for protein phosphatase 1 regulatory subunit 36 (PPP1R36) and ataxin 2 like (ATXN2L) in three new biological replicates. The knockdown of ATXN2L led to a 22.9% increase in blastocyst development. The second objective of this study was to characterize the parental origin of RNAs present in pre-EGA embryos. Results revealed 472 sperm-derived RNAs, 2575 oocyte-derived RNAs, 2675 RNAs derived from both sperm and oocytes, and 663 embryo-exclusive RNAs. This study uncovers an association of male fertility with developmentally impactful RNAs in 2-4 cell embryos. This study also provides an initial characterization of paternally-contributed RNAs to pre-EGA embryos. Furthermore, a subset of 2-4 cell embryo-specific RNAs was identified.
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Affiliation(s)
- Nicole Gross
- University of Wisconsin, Department of Animal Sciences, Madison, WI, 53706, USA
| | | | | | - Hasan Khatib
- University of Wisconsin, Department of Animal Sciences, Madison, WI, 53706, USA.
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Suliman Y, Becker F, Wimmers K. Implication of transcriptome profiling of spermatozoa for stallion fertility. Reprod Fertil Dev 2019. [PMID: 29534788 DOI: 10.1071/rd17188] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Poor fertility of breeding stallions is a recognised problem in the equine industry. The aim of the present study was to detect molecular pathways using two groups of stallions that differed in pregnancy rates as well as in the proportion of normal and motile spermatozoa. RNA was isolated from spermatozoa of each stallion and microarray data were analysed to obtain a list of genes for which transcript abundance differed between the groups (P ≤0.05, fold change ≥1.2). In all, there were 437 differentially expressed (DE) genes between the two groups (P ≤ 0.05, fold change ≥1.2). Next, the DE genes were analysed using Database for Annotation, Visualisation, and Integrated Discovery (DAVID). Finally, ingenuity pathways analysis (IPA) was used to identify top biological functions and significant canonical pathways associated with the DE genes. Analysis using the DAVID database showed significant enrichment in the gene ontology (GO) term 'RNA binding' (P=0.05) and in the Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway cytokine-cytokine receptor interaction (P=0.02). Furthermore, IPA analysis showed interconnected biological functions and canonical pathways involved in the regulation of spermatogenesis and male fertility. In addition, significantly enriched metabolic pathways were identified. In conclusion, the present study has identified, for the first time, molecular processes in stallion spermatozoa that could be associated with stallion fertility.
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Affiliation(s)
- Yara Suliman
- Institute for Reproductive Biology, Leibniz Institute for Farm Animal Biology Dummerstorf, D-18196 Dummerstorf, Wilhem-Stahl-Allee 2, Germany
| | - Frank Becker
- Institute for Reproductive Biology, Leibniz Institute for Farm Animal Biology Dummerstorf, D-18196 Dummerstorf, Wilhem-Stahl-Allee 2, Germany
| | - Klaus Wimmers
- Institute for Genome Biology, Leibniz Institute for Farm Animal Biology Dummerstorf, D-18196 Dummerstorf, Wilhelm-Stahl-Allee 2, Germany
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12
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de Melo TP, Salinas Fortes MR, Hayes B, de Albuquerque LG, Carvalheiro R. Across-breed validation study confirms and identifies new loci associated with sexual precocity in Brahman and Nellore cattle. J Anim Breed Genet 2019; 137:139-154. [PMID: 31414510 DOI: 10.1111/jbg.12429] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2019] [Revised: 07/05/2019] [Accepted: 07/15/2019] [Indexed: 11/28/2022]
Abstract
The aim of this study was to identify candidate regions associated with sexual precocity in Bos indicus. Nellore and Brahman were set as validation and discovery populations, respectively. SNP selected in Brahman to validate in Nellore were from gene regions affecting reproductive traits (G1) and significant SNP (p ≤ 10-3 ) from a meta-analysis (G2). In the validation population, early pregnancy (EP) and scrotal circumference (SC) were evaluated. To perform GWAS in validation population, we used regression and Bayes C. SNP with p ≤ 10-3 in regression and Bayes factor ≥3 in Bayes C were deemed significant. Significant SNP (for EP or SC) or SNP in their ±250 Kb vicinity region, which were in at least one discovery set (G1 or G2), were considered validated. SNP identified in both G1 and G2 were considered candidate. For EP, 145 SNP were validated in G1 and 41 in G2, and for SC, these numbers were 14 and 2. For EP, 21 candidate SNP were detected (G1 and G2). For SC, no candidate SNP were identified. Validated SNP and their vicinity region were located close to quantitative trait loci or genes related to reproductive traits and were enriched in gene ontology terms related to reproductive success. These are therefore strong candidate regions for sexual precocity in Nellore and Brahman.
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Affiliation(s)
- Thaise Pinto de Melo
- Department of Animal Science, School of Agricultural and Veterinarian Sciences, FCAV/ UNESP - Sao Paulo State University, Jaboticabal, Sao Paulo, Brazil
| | - Marina Rufino Salinas Fortes
- School of Chemistry and Molecular Biosciences, The University of Queensland, St Lucia, Qld, Australia.,Queensland Alliance for Agriculture and Food Innovation, The University of Queensland, St Lucia, Qld, Australia
| | - Ben Hayes
- Queensland Alliance for Agriculture and Food Innovation, The University of Queensland, St Lucia, Qld, Australia
| | - Lucia Galvão de Albuquerque
- Department of Animal Science, School of Agricultural and Veterinarian Sciences, FCAV/ UNESP - Sao Paulo State University, Jaboticabal, Sao Paulo, Brazil.,National Council for Scientific and Technological Development (CNPq), Brasília, Distrito Federal, Brazil
| | - Roberto Carvalheiro
- Department of Animal Science, School of Agricultural and Veterinarian Sciences, FCAV/ UNESP - Sao Paulo State University, Jaboticabal, Sao Paulo, Brazil.,National Council for Scientific and Technological Development (CNPq), Brasília, Distrito Federal, Brazil
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13
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Han CM, Chen R, Li T, Chen XL, Zheng YF, Ma MT, Gao QH. The bovine sex-determining region Y (Sry) gene and its mRNA transcript are present in Y sperm but not X sperm of bulls. ANIM BIOL 2018. [DOI: 10.1163/15707563-17000105] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Abstract
The aims of this study were to establish whether the sex-determining region Y gene and its mRNA transcript are present in the Y sperm and X sperm of bulls and, if present, determine their cellular localization. Semen was collected from three bulls and sorted by flow cytometry into X- and Y-chromosome populations. Reverse transcription-polymerase chain reaction (RT-PCR) was used to determine Sry mRNA expression in X sperm and Y sperm. The presence and localization of Sry DNA and RNA were investigated by fluorescence in situ hybridization (FISH). RT-PCR detected a single Sry transcript of 142 bp in Y sperm but not in X sperm. In Y sperm, the FISH-positive rates for Sry DNA and Sry RNA did not differ significantly from the re-analyzed Y sperm purity. In further experiments, there were no significant differences between the FISH-positive rate for Sry RNA and the re-analyzed Y sperm purity for X-sorted, Y-sorted, or unsorted sperm. In conclusion, FISH analysis revealed that Sry transcripts are present at the edges of the sperm heads of Y sperm but are absent from X sperm.
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Affiliation(s)
- Chun-Mei Han
- 1College of Animal Science, Tarim University, Alar, Xinjiang, 843300, China
| | - Rong Chen
- 1College of Animal Science, Tarim University, Alar, Xinjiang, 843300, China
| | - Tao Li
- 1College of Animal Science, Tarim University, Alar, Xinjiang, 843300, China
| | - Xiao-Li Chen
- 2College of Life Science, Tarim University, Alar, Xinjiang, 843300, China
| | - Yong-Fu Zheng
- 1College of Animal Science, Tarim University, Alar, Xinjiang, 843300, China
| | - Meng-Ting Ma
- 2College of Life Science, Tarim University, Alar, Xinjiang, 843300, China
| | - Qing-Hua Gao
- 1College of Animal Science, Tarim University, Alar, Xinjiang, 843300, China
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14
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Budna J, Bryja A, Celichowski P, Kranc W, Ciesiółka S, Borys S, Rybska M, Kolecka-Bednarczyk A, Jeseta M, Bukowska D, Antosik P, Brüssow KP, Bruska M, Nowicki M, Zabel M, Kempisty B. "Bone Development" Is an Ontology Group Upregulated in Porcine Oocytes Before In Vitro Maturation: A Microarray Approach. DNA Cell Biol 2017; 36:638-646. [PMID: 28574720 DOI: 10.1089/dna.2017.3677] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Mammalian cumulus-oocyte complexes (COCs) reach full developmental capability during folliculogenesis and oogenesis. It is well recognized that only gametes achieving MII stage after in vivo or in vitro maturation (IVM) are successfully fertilized by a single spermatozoon. Although the process of oocyte nuclear and/or cytoplasmic maturation in pigs is well determined, there exist many differences that promote these processes in vivo and in vitro. Therefore, this study aimed to investigate the differences in RNA expression profiles between porcine oocytes before and after IVM using microarray and real-time quantitative polymerase chain reaction (RT-qPCR) assays. Experiments were performed on oocytes isolated from 55 pubertal crossbred Landrace gilts. The oocytes were analyzed both before and after IVM and only Brilliant Cresyl Blue (BCB)-positive gametes were used for subsequent microarray analysis (Affymetrix) and RT-qPCR analysis. The microarray assay, which measures expression of 12,258 transcripts, revealed 419 differentially expressed transcripts in porcine oocytes, from which 379 were downregulated and 40 were upregulated before IVM compared to those analyzed after IVM. After DAVID analysis, we found eight different transcripts, including IHH, BMP1, WWTR1, CHRDL1, KLF10, EIF2AK3, MMP14, and STC1. Their expression is related to the "bone development" ontology group and was further subjected to hierarchical clusterization. Using RT-qPCR analysis, we confirmed the results of the microarray assay, showing increased expression of the eight genes in oocytes before IVM compared to oocytes after maturation in vitro. It has been suggested that "bone development" belongs to one ontological group involving genes substantially upregulated in porcine oocytes before IVM. We suggest that the gamete mRNA expression profile before IVM may comprise stored transcripts, which are templates for protein biosynthesis following fertilization. We also hypothesize that these mRNAs may be a specific "fingerprint" of folliculogenesis and oogenesis in pigs.
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Affiliation(s)
- Joanna Budna
- 1 Department of Histology and Embryology, Poznan University of Medical Sciences , Poznan, Poland
| | - Artur Bryja
- 2 Department of Anatomy, Poznan University of Medical Sciences , Poznan, Poland
| | - Piotr Celichowski
- 1 Department of Histology and Embryology, Poznan University of Medical Sciences , Poznan, Poland
| | - Wiesława Kranc
- 2 Department of Anatomy, Poznan University of Medical Sciences , Poznan, Poland
| | - Sylwia Ciesiółka
- 1 Department of Histology and Embryology, Poznan University of Medical Sciences , Poznan, Poland
| | - Sylwia Borys
- 2 Department of Anatomy, Poznan University of Medical Sciences , Poznan, Poland
| | - Marta Rybska
- 3 Institute of Veterinary Sciences, Poznan University of Life Sciences , Poznan, Poland
| | | | - Michal Jeseta
- 5 Department of Obstetrics and Gynecology, University Hospital and Masaryk University , Brno, Czech Republic
| | - Dorota Bukowska
- 3 Institute of Veterinary Sciences, Poznan University of Life Sciences , Poznan, Poland
| | - Paweł Antosik
- 3 Institute of Veterinary Sciences, Poznan University of Life Sciences , Poznan, Poland
| | - Klaus P Brüssow
- 2 Department of Anatomy, Poznan University of Medical Sciences , Poznan, Poland
| | - Małgorzata Bruska
- 2 Department of Anatomy, Poznan University of Medical Sciences , Poznan, Poland
| | - Michał Nowicki
- 1 Department of Histology and Embryology, Poznan University of Medical Sciences , Poznan, Poland
| | - Maciej Zabel
- 1 Department of Histology and Embryology, Poznan University of Medical Sciences , Poznan, Poland
| | - Bartosz Kempisty
- 1 Department of Histology and Embryology, Poznan University of Medical Sciences , Poznan, Poland .,2 Department of Anatomy, Poznan University of Medical Sciences , Poznan, Poland
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15
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Relative abundance of heat shock proteins and clusterin transcripts in spermatozoa collected from boar routinely utilised in an artificial insemination centre: preliminary results. Vet Res Commun 2017; 41:233-239. [PMID: 28429153 DOI: 10.1007/s11259-017-9689-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2016] [Accepted: 04/10/2017] [Indexed: 01/02/2023]
Abstract
It is widely accepted that mature sperm contains RNA. The first hypothesis was that sperm RNAs have no functions of their own but are simply residues of spermatogenesis reflecting the events that occurred during their formation in the testes. More recently new discoveries have essentially expanded these views, showing that sperm mRNAs constitute a population of stable full-length transcripts, many of which are selectively retained during spermatogenesis and delivered to oocytes contributing to early embryo development. It is well known that semen quality can be influenced by occasional physical stress, infection, and variation in temperature and the definition of new markers for evaluation of semen could offer knowledge about the fertility potential of a semen sample. The aim of the present study was to evaluate the presence and the relative quantity of transcripts and protein of heat shock protein 70 (HSP70), 90 (HSP90) and clusterin (CLU) in Percoll-selected spermatozoa collected from seven adult boars of proven fertility routinely employed for artificial insemination. Our results showed the presence of HSP70, HSP90 and CLU transcripts with different level of expression: high for HSPs and low for CLU transcripts. The transcript level of both HSPs are similar among selected spermatozoa derived from high quality sperm with the exception of one boar that showed a reduced content of HSP70 and HSP90 mRNA together with a lower semen quality. At protein level, both HSPs were detected with similar amount among all seven boars whilst no band was evidenced for CLU protein.
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16
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Card CJ, Krieger KE, Kaproth M, Sartini BL. Oligo-dT selected spermatozoal transcript profiles differ among higher and lower fertility dairy sires. Anim Reprod Sci 2017; 177:105-123. [PMID: 28081858 DOI: 10.1016/j.anireprosci.2016.12.011] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2016] [Revised: 11/30/2016] [Accepted: 12/22/2016] [Indexed: 01/12/2023]
Abstract
Spermatozoal messenger RNA (mRNA) has the potential as a molecular marker for sire fertility because this population can reflect gene expression that occurred during spermatogenesis and may have a functional role in early embryonic development. The goal of this study was to compare the oligo-dT selected spermatozoal transcript profiles of higher fertility (Conception Rate (CR) 1.8-3.5) and lower fertility (CR -2.9 to -0.4) sires using Ribonucleic Acid Sequencing (RNA-Seq). A total of 3227 transcripts and 5366 transcripts were identified in the higher and lower fertility populations, respectively. While common transcripts between the two populations were identified (2422 transcripts), several transcripts were also unique to the fertility populations including 805 transcripts that were unique to the higher fertility population and 2944 transcripts that were unique to the lower fertility population. From gene ontological analysis, the transcripts unique to each fertility population differed in Biological Processes (BP), including enrichment of regulatory transcripts for growth and protein kinase activity in the higher fertility bulls. Biological variation in transcript presence among individual sires was also found. Of the candidate fertility spermatozoal transcripts chosen from the RNA-Seq population analysis reported here and previous publications, COX7C was negatively correlated with sire fertility. Using high-throughput sequencing, candidate spermatozoal transcripts were identified for further study as potential markers for sire fertility.
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Affiliation(s)
- C J Card
- Department of Fisheries, Animal and Veterinary Science, University of Rhode Island, Kingston 02881, United States
| | - K E Krieger
- Genex Cooperative Inc., Shawano, WI 54166, United States
| | - M Kaproth
- Genex Cooperative Inc., Shawano, WI 54166, United States
| | - B L Sartini
- Department of Fisheries, Animal and Veterinary Science, University of Rhode Island, Kingston 02881, United States.
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17
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Singh RP, Shafeeque CM, Sharma SK, Singh R, Mohan J, Sastry KVH, Saxena VK, Azeez PA. Chicken sperm transcriptome profiling by microarray analysis. Genome 2015; 59:185-96. [PMID: 26868024 DOI: 10.1139/gen-2015-0106] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
It has been confirmed that mammalian sperm contain thousands of functional RNAs, and some of them have vital roles in fertilization and early embryonic development. Therefore, we attempted to characterize transcriptome of the sperm of fertile chickens using microarray analysis. Spermatozoal RNA was pooled from 10 fertile males and used for RNA preparation. Prior to performing the microarray, RNA quality was assessed using a bioanalyzer, and gDNA and somatic cell RNA contamination was assessed by CD4 and PTPRC gene amplification. The chicken sperm transcriptome was cross-examined by analysing sperm and testes RNA on a 4 × 44K chicken array, and results were verified by RT-PCR. Microarray analysis identified 21,639 predominantly nuclear-encoded transcripts in chicken sperm. The majority (66.55%) of the sperm transcripts were shared with the testes, while surprisingly, 33.45% transcripts were detected (raw signal intensity greater than 50) only in the sperm and not in the testes. The greatest proportion of up-regulated transcripts were responsible for signal transduction (63.20%) followed by embryonic development (56.76%) and cell structure (56.25%). Of the 20 most abundant transcripts, 18 remain uncharacterized, whereas the least abundant genes were mostly associated with the ribosome. These findings lay a foundation for more detailed investigations on sperm RNAs in chickens to identify sperm-based biomarkers for fertility.
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Affiliation(s)
- R P Singh
- a Avian Physiology and Genetics Division, Sálim Ali Centre for Ornithology and Natural History, Anaikatty-641108, Coimbatore, India
| | - C M Shafeeque
- a Avian Physiology and Genetics Division, Sálim Ali Centre for Ornithology and Natural History, Anaikatty-641108, Coimbatore, India
| | - S K Sharma
- b Central Avian Research Institute, Izatnagar, 243122, India
| | - R Singh
- c Indian Veterinary Research Institute, Izatnagar, 243122, India
| | - J Mohan
- b Central Avian Research Institute, Izatnagar, 243122, India
| | - K V H Sastry
- b Central Avian Research Institute, Izatnagar, 243122, India
| | - V K Saxena
- b Central Avian Research Institute, Izatnagar, 243122, India
| | - P A Azeez
- a Avian Physiology and Genetics Division, Sálim Ali Centre for Ornithology and Natural History, Anaikatty-641108, Coimbatore, India
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18
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RNA sequencing as a powerful tool in searching for genes influencing health and performance traits of horses. J Appl Genet 2015; 57:199-206. [PMID: 26446669 DOI: 10.1007/s13353-015-0320-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2015] [Revised: 04/19/2015] [Accepted: 09/22/2015] [Indexed: 12/31/2022]
Abstract
RNA sequencing (RNA-seq) by next-generation technology is a powerful tool which creates new possibilities in whole-transcriptome analysis. In recent years, with the use of the RNA-seq method, several studies expanded transcriptional gene profiles to understand interactions between genotype and phenotype, supremely contributing to the field of equine biology. To date, in horses, massive parallel sequencing of cDNA has been successfully used to identify and quantify mRNA levels in several normal tissues, as well as to annotate genes. Moreover, the RNA-seq method has been applied to identify the genetic basis of several diseases or to investigate organism adaptation processes to the training conditions. The use of the RNA-seq approach has also confirmed that horses can be useful as a large animal model for human disease, especially in the field of immune response. The presented review summarizes the achievements of profiling gene expression in horses (Equus caballus).
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19
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microRNA profiling in three main stages during porcine spermatogenesis. J Assist Reprod Genet 2015; 32:451-60. [PMID: 25563581 DOI: 10.1007/s10815-014-0406-x] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2014] [Accepted: 12/11/2014] [Indexed: 12/22/2022] Open
Abstract
BACKGROUND Spermatogenesis is an intricate biological event wherein an undifferentiated spermatogonium develops into mature sperms. MicroRNAs are a type of single strand small non-coding RNA molecule and are implicated in the regulation of many crucial pathways during cell proliferation, apoptosis, and differentiation. METHOD Here, we present a comprehensive comparison of miRNA expression profiling in three main stages during porcine spermatogenesis using high-throughput sequencing. RESULTS We built three small RNA libraries for the testis, the epididymis and the ejaculated sperm from a Landrace boar, and in total obtained 3821 precursor hairpins encoding for 4761 mature miRNAs, of which 23 are miRNA*. Notably, 940 precursor miRNAs produced both the 5'- and 3'- strands as sister pairs, indicating the distinctive expression patterns of germ cell miRNAs. Additionally, 418 out of 710 co-expressed miRNAs were identified as being differentially expressed between libraries (P < 0.001). Apart from the sexual specific X chromosome, many miRNAs were found to be located on chromosome 12, which may play potential roles in spermatogenesis according to the result of synteny analysis with human and mouse. The Gene Ontology and KEGG pathway analysis revealed that the target genes of co-expressed miRNAs were highly involved in the cell cycle process, metal ion binding, modification of plasma membrane, and the p53 signal pathway.
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20
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Ing NH, Forrest DW, Love CC, Varner DD. Dense spermatozoa in stallion ejaculates contain lower concentrations of mRNAs encoding the sperm specific calcium channel 1, ornithine decarboxylase antizyme 3, aromatase, and estrogen receptor alpha than less dense spermatozoa. Theriogenology 2014; 82:347-53. [PMID: 24857629 DOI: 10.1016/j.theriogenology.2014.04.016] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2013] [Revised: 03/18/2014] [Accepted: 04/16/2014] [Indexed: 01/07/2023]
Abstract
Stallions are unique among livestock in that, like men, they commonly receive medical treatment for subfertility. In both species, about 15% of individuals have normal semen parameters but are subfertile, indicating a need for novel analyses of spermatozoa function. One procedure for improving fertilizing capability of stallions and men is isolation of dense spermatozoa from an ejaculate for use in artificial insemination. In the current study, dense and less dense spermatozoa were purified by density gradient centrifugation from individual ejaculates from seven reproductively normal adult stallions. The RNA isolated from the spermatozoa seemed to be naturally fragmented to an average length of 250 bases, consistent with reports of spermatozoa RNA from other species. The DNAse treatment of RNA prepared from spermatozoa removed any genomic DNA contamination, as assessed by PCR with intron spanning primers for the protamine 1 (PRM1) gene. Concentrations of seven mRNAs in spermatozoa, correlated with the fertility of men and bulls, were quantified by reverse transcription polymerase chain reaction in dense and less dense spermatozoa. Concentrations of four mRNAs were two- to four-fold lower in dense spermatozoa compared with less dense spermatozoa: Encoding the spermatozoa-specific calcium channel (P < 0.03), ornithine decarboxylase antizyme 3 (P < 0.02), aromatase (P < 0.02), and estrogen receptor alpha (P < 0.08). In contrast, concentrations of three other mRNAs, encoding PRM1 and heat shock proteins HSPA8 and DNAJC4, were not different (P > 0.1). These results identify new differences in mRNA concentrations in populations of spermatozoa with dissimilar densities.
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Affiliation(s)
- N H Ing
- Department of Animal Science, Texas A&M AgriLife Research, Texas A&M University, College Station, Texas, USA.
| | - D W Forrest
- Department of Animal Science, Texas A&M AgriLife Research, Texas A&M University, College Station, Texas, USA
| | - C C Love
- Department of Large Animal Clinical Sciences, College of Veterinary Medicine and Biosciences, Texas A&M University, College Station, Texas, USA
| | - D D Varner
- Department of Large Animal Clinical Sciences, College of Veterinary Medicine and Biosciences, Texas A&M University, College Station, Texas, USA
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21
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Kempisty B, Ziółkowska A, Piotrowska H, Antosik P, Bukowska D, Zawierucha P, Jaśkowski J, Brüssow KP, Nowicki M, Zabel M. Expression and cellular distribution of cyclin-dependent kinase 4 (Cdk4) and connexin 43 (Cx43) in porcine oocytes before and after in vitro maturation. Acta Vet Hung 2014; 62:84-95. [PMID: 24334079 DOI: 10.1556/avet.2013.039] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
It is recognised that connexin 43 (Cx43) and cyclin-dependent kinase 4 (Cdk4) are involved in the cumulus cell-oocyte communication via gap junctions and the control of cell cycle progress. However, little is known about their mRNA expression pattern and encoded proteins distribution in porcine oocytes during in vitro maturation (IVM). Cumulus-oocyte complexes (COCs) were collected from 31 puberal crossbred Landrace gilts and analysed for their Cdk4 and Cx43 mRNA expression using RQ-PCR and for the respective protein expression by confocal microscopic observations. An increased Cdk4 and Cx43 mRNA expression was found in oocytes after IVM (P < 0.001 and P < 0.05, respectively). Confocal microscopic observations revealed a significant increase of Cdk4 protein expression in the cytoplasm of oocytes during the maturation process. The localisation of Cx43 changed from zona pellucida before to cytoplasm of oocytes after IVM. It is supposed that the increased expression of Cdk4 and Cx43 mRNA in oocytes after IVM is linked with the accumulation of a large amount of templates during the process of oocyte maturation. The translocation especially of Cx43 from the zona pellucida into the cytoplasm may be associated with a decrease in gap junction activity in fully grown porcine oocytes. Both Cdk4 and Cx43 can be used as 'checkpoints' of oocyte maturation.
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Affiliation(s)
| | - Agnieszka Ziółkowska
- 1 Poznań University of Medical Sciences Department of Histology and Embryology Poznań Poland
| | - Hanna Piotrowska
- 3 Poznań University of Medical Sciences Department of Toxicology 30 Dojazd St. 60-631 Poznań Poland
| | - Paweł Antosik
- 4 Poznań University of Life Sciences Department of Veterinary Poznań Poland
| | - Dorota Bukowska
- 4 Poznań University of Life Sciences Department of Veterinary Poznań Poland
| | | | - Jędrzej Jaśkowski
- 4 Poznań University of Life Sciences Department of Veterinary Poznań Poland
| | - Klaus-Peter Brüssow
- 5 Leibniz Institute for Farm Animal Biology Department of Reproductive Biology Dummerstorf Germany
| | - Michał Nowicki
- 1 Poznań University of Medical Sciences Department of Histology and Embryology Poznań Poland
| | - Maciej Zabel
- 1 Poznań University of Medical Sciences Department of Histology and Embryology Poznań Poland
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22
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Selection of optimal reference genes for quantitative RT-PCR studies of boar spermatozoa cryopreservation. Cryobiology 2014; 68:113-21. [DOI: 10.1016/j.cryobiol.2014.01.004] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2013] [Revised: 12/25/2013] [Accepted: 01/07/2014] [Indexed: 11/20/2022]
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23
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Hwang JY, Mulligan BP, Kim HM, Yang BC, Lee CK. Quantitative analysis of sperm mRNA in the pig: relationship with early embryo development and capacitation. Reprod Fertil Dev 2014; 25:807-17. [PMID: 22951102 DOI: 10.1071/rd12160] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2012] [Accepted: 07/05/2012] [Indexed: 12/12/2022] Open
Abstract
Although it is well known that mRNA is present in mammalian spermatozoa, the relevance of mRNA to capacitation and early embryo development in the pig remains unclear. In the present study, we investigated differences in the abundance of selected mRNAs coding for MYC, CYP19, ADAM2, PRM1 and PRM2 in purified porcine spermatozoa depending on embryo cleavage rate and capacitation (n=20 semen samples). Semen samples were used in IVF procedures, with subsequent embryo development classified into one of two groups based on cleavage rate (i.e. high (>75%) and low (<75%) cleavage groups) and mRNA abundance in purified spermatozoa compared between these two groups. In addition, mRNA abundance was compared between capacitated and non-capacitated spermatozoa. Comparison of mRNA levels between porcine spermatozoa revealed that the abundance of MYC, CYP19, ADAM2, PRM1 and PRM2 mRNA was significantly greater in the high cleavage group (n=10 high cleavage group semen samples) than in the low cleavage group (n=10; P<0.05). Significant downregulation of MYC mRNA was observed in capacitated spermatozoa (n=12; P<0.05). The results of the present study suggest that the amount of specific mRNAs could be used for estimating the quality of spermatozoa in the pig.
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Affiliation(s)
- Jae Yeon Hwang
- Department of Agricultural Biotechnology, Animal Biotechnology Major, and Research Institute for Agriculture and Life Science, Seoul National University, Seoul 151-921, Korea
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24
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Kumar K, Deka D, Singh A, Chattopadhyay P, Dada R. Expression pattern of PRM2, HSP90 and WNT5A in male partners of couples experiencing idiopathic recurrent miscarriages. J Genet 2013; 91:363-6. [PMID: 23271023 DOI: 10.1007/s12041-012-0200-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Kishlay Kumar
- Laboratory for Molecular Reproduction and Genetics, Department of Anatomy, All India Institute of Medical Sciences, New Delhi 110 029, India
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25
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Jackowska M, Kempisty B, Woźna M, Piotrowska H, Antosik P, Zawierucha P, Bukowska D, Nowicki M, Jaśkowski J, Brüssow KP. Differential expression of GDF9, TGFB1, TGFB2 and TGFB3 in porcine oocytes isolated from follicles of different size before and after culture in vitro. Acta Vet Hung 2013; 61:99-115. [PMID: 23439295 DOI: 10.1556/avet.2012.061] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
The TGFB superfamily genes are involved in several important cell functions, including proliferation and differentiation, and the role of the expression of these genes in growth and development of theca and granulosa cells is well recognised. However, the dependence between the stage of oocyte maturation or follicular size and the expression of these genes in pigs is still not entirely known. This study was aimed at investigating the expression pattern of GDF9, TGFB1, TGFB2 and TGFB3 in porcine oocytes before and after in vitro maturation (IVM) as well as in oocytes collected from follicles of different sizes. RQ-PCR was performed to analyse the expression of GDF9, TGFB1, TGFB2 and TGFB3 in oocytes before and after IVM (oocytes cultured for 44 h in TCM-199), isolated from large (> 5 mm), medium (3-5 mm) and small (< 3 mm) follicles collected from ovaries of 28 puberal crossbred Landrace gilts after slaughter. We found an increased expression of both TGFB1 and TGFB2 in oocytes before IVM collected from large as compared to medium and small follicles (P < 0.05, P < 0.001, P < 0.01, P < 0.05, respectively). In these groups of oocytes we did not observe differences in GDF9 and TGFB3 mRNA levels. However, after IVM, GDF9 protein distribution in oocytes was significantly higher in large and medium follicles as compared to small ones (P < 0.01, P < 0.001, respectively). Moreover, an increased TGFB1, TGFB2 and TGFB3 proteins pattern was observed in oocytes of large compared to small follicles. The highest GDF9 and TGFB1 mRNA levels were found in oocytes after IVM compared to those before IVM. Based on our study we can suppose that the distribution pattern of TGFB superfamily genes is associated with the stage of maturation of porcine oocytes and the follicle size. Furthermore, GDF9 and TGFB1 may serve as molecular markers of the develop-mental potential of porcine oocytes. The confocal microscopic observation revealed that TGFB1 and TGFB3 were translocated between the zona and the cytoplasm of oocytes, depending on the stage of maturation and follicle size.
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Affiliation(s)
- Marta Jackowska
- 1 Poznan University of Life Sciences Department of Veterinary Science Poznan Poland
| | | | - Magdalena Woźna
- 1 Poznan University of Life Sciences Department of Veterinary Science Poznan Poland
| | - Hanna Piotrowska
- 4 Poznan University of Medical Sciences Department of Toxicology 6 Swiecickiego St. 60-781 Poznan Poland
| | - Paweł Antosik
- 1 Poznan University of Life Sciences Department of Veterinary Science Poznan Poland
| | | | - Dorota Bukowska
- 1 Poznan University of Life Sciences Department of Veterinary Science Poznan Poland
| | - Michał Nowicki
- 2 Poznan University of Medical Sciences Department of Histology and Embryology 6 Swiecickiego St. 60-781 Poznan Poland
| | - Jędrzej Jaśkowski
- 1 Poznan University of Life Sciences Department of Veterinary Science Poznan Poland
| | - Klaus-Peter Brüssow
- 5 Leibniz Institute for Farm Animal Biology Department of Reproductive Biology Dummerstorf Germany
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Das PJ, McCarthy F, Vishnoi M, Paria N, Gresham C, Li G, Kachroo P, Sudderth AK, Teague S, Love CC, Varner DD, Chowdhary BP, Raudsepp T. Stallion sperm transcriptome comprises functionally coherent coding and regulatory RNAs as revealed by microarray analysis and RNA-seq. PLoS One 2013; 8:e56535. [PMID: 23409192 PMCID: PMC3569414 DOI: 10.1371/journal.pone.0056535] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2012] [Accepted: 01/10/2013] [Indexed: 01/23/2023] Open
Abstract
Mature mammalian sperm contain a complex population of RNAs some of which might regulate spermatogenesis while others probably play a role in fertilization and early development. Due to this limited knowledge, the biological functions of sperm RNAs remain enigmatic. Here we report the first characterization of the global transcriptome of the sperm of fertile stallions. The findings improved understanding of the biological significance of sperm RNAs which in turn will allow the discovery of sperm-based biomarkers for stallion fertility. The stallion sperm transcriptome was interrogated by analyzing sperm and testes RNA on a 21,000-element equine whole-genome oligoarray and by RNA-seq. Microarray analysis revealed 6,761 transcripts in the sperm, of which 165 were sperm-enriched, and 155 were differentially expressed between the sperm and testes. Next, 70 million raw reads were generated by RNA-seq of which 50% could be aligned with the horse reference genome. A total of 19,257 sequence tags were mapped to all horse chromosomes and the mitochondrial genome. The highest density of mapped transcripts was in gene-rich ECA11, 12 and 13, and the lowest in gene-poor ECA9 and X; 7 gene transcripts originated from ECAY. Structural annotation aligned sperm transcripts with 4,504 known horse and/or human genes, rRNAs and 82 miRNAs, whereas 13,354 sequence tags remained anonymous. The data were aligned with selected equine gene models to identify additional exons and splice variants. Gene Ontology annotations showed that sperm transcripts were associated with molecular processes (chemoattractant-activated signal transduction, ion transport) and cellular components (membranes and vesicles) related to known sperm functions at fertilization, while some messenger and micro RNAs might be critical for early development. The findings suggest that the rich repertoire of coding and non-coding RNAs in stallion sperm is not a random remnant from spermatogenesis in testes but a selectively retained and functionally coherent collection of RNAs.
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Affiliation(s)
- Pranab J Das
- Department of Veterinary Integrative Biosciences, Texas A&M University, College Station, Texas, United States of America
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Card CJ, Anderson EJ, Zamberlan S, Krieger KE, Kaproth M, Sartini BL. Cryopreserved Bovine Spermatozoal Transcript Profile as Revealed by High-Throughput Ribonucleic Acid Sequencing1. Biol Reprod 2013; 88:49. [DOI: 10.1095/biolreprod.112.103788] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
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Pacheco SE, Anderson LM, Sandrof MA, Vantangoli MM, Hall SJ, Boekelheide K. Sperm mRNA transcripts are indicators of sub-chronic low dose testicular injury in the Fischer 344 rat. PLoS One 2012; 7:e44280. [PMID: 22952946 PMCID: PMC3432073 DOI: 10.1371/journal.pone.0044280] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2012] [Accepted: 07/31/2012] [Indexed: 11/18/2022] Open
Abstract
Current human reproductive risk assessment methods rely on semen and serum hormone analyses, which are not easily comparable to the histopathological endpoints and mating studies used in animal testing. Because of these limitations, there is a need to develop universal evaluations that reliably reflect male reproductive function. We hypothesized that toxicant-induced testicular injury can be detected in sperm using mRNA transcripts as indicators of insult. To test this, we exposed adult male Fischer 344 rats to low doses of model testicular toxicants and classically characterized the testicular injury while simultaneously evaluating sperm mRNA transcripts from the same animals. Overall, this study aimed to: 1) identify sperm transcripts altered after exposure to the model testicular toxicant, 2,5-hexanedione (HD) using microarrays; 2) expand on the HD-induced transcript changes in a comprehensive time course experiment using qRT-PCR arrays; and 3) test these injury indicators after exposure to another model testicular toxicant, carbendazim (CBZ). Microarray analysis of HD-treated adult Fischer 344 rats identified 128 altered sperm mRNA transcripts when compared to control using linear models of microarray analysis (q<0.05). All transcript alterations disappeared after 3 months of post-exposure recovery. In the time course experiment, time-dependent alterations were observed for 12 candidate transcripts selected from the microarray data based upon fold change and biological relevance, and 8 of these transcripts remained significantly altered after the 3-month recovery period (p<0.05). In the last experiment, 8 candidate transcripts changed after exposure to CBZ (p<0.05). The two testicular toxicants produced distinct molecular signatures with only 4 overlapping transcripts between them, each occurring in opposite directions. Overall, these results suggest that sperm mRNA transcripts are indicators of low dose toxicant-induced testicular injury in the rat.
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Affiliation(s)
- Sara E. Pacheco
- Department of Pathology and Laboratory Medicine, Brown University, Providence, Rhode Island, United States of America
| | - Linnea M. Anderson
- Department of Pathology and Laboratory Medicine, Brown University, Providence, Rhode Island, United States of America
| | - Moses A. Sandrof
- Department of Pathology and Laboratory Medicine, Brown University, Providence, Rhode Island, United States of America
| | - Marguerite M. Vantangoli
- Department of Pathology and Laboratory Medicine, Brown University, Providence, Rhode Island, United States of America
| | - Susan J. Hall
- Department of Pathology and Laboratory Medicine, Brown University, Providence, Rhode Island, United States of America
| | - Kim Boekelheide
- Department of Pathology and Laboratory Medicine, Brown University, Providence, Rhode Island, United States of America
- * E-mail:
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Li C, Zhou X. Gene transcripts in spermatozoa: markers of male infertility. Clin Chim Acta 2012; 413:1035-8. [PMID: 22445828 DOI: 10.1016/j.cca.2012.03.002] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2011] [Revised: 03/05/2012] [Accepted: 03/05/2012] [Indexed: 11/27/2022]
Abstract
The presence of a complex population of gene transcripts in mature human sperm is well established, and numerous mRNAs and non-coding mRNAs have been identified in sperm of men and other mammalian species using microarray and RT-PCR. The traditional concept that RNAs in mature sperm are only remnants from spermatogenesis and have no biological functions is in doubt. The findings that reverse transcriptases in sperm are active and that sperm can independently activate translation of stored mRNAs suggest that sperm RNAs may have significant effects on male fertility. The differences in expression profiles among RNAs in mature sperm from fertile and infertile men, and the regulation of sperm RNAs in embryonic development make them appealing markers for therapeutic and diagnostic tools in male infertility. In this review, methods for the detection and description of the diversity of gene transcript in sperm are discussed along with their putative roles in functional aspects of sperm and in embryogenesis.
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Affiliation(s)
- Chunjin Li
- College of Animal Science and Veterinary Medicine, Jilin University, Changchun, Jilin Province, PR China
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Pacheco SE, Houseman EA, Christensen BC, Marsit CJ, Kelsey KT, Sigman M, Boekelheide K. Integrative DNA methylation and gene expression analyses identify DNA packaging and epigenetic regulatory genes associated with low motility sperm. PLoS One 2011; 6:e20280. [PMID: 21674046 PMCID: PMC3107223 DOI: 10.1371/journal.pone.0020280] [Citation(s) in RCA: 105] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2011] [Accepted: 04/23/2011] [Indexed: 12/17/2022] Open
Abstract
Background In previous studies using candidate gene approaches, low sperm count (oligospermia) has been associated with altered sperm mRNA content and DNA methylation in both imprinted and non-imprinted genes. We performed a genome-wide analysis of sperm DNA methylation and mRNA content to test for associations with sperm function. Methods and Results Sperm DNA and mRNA were isolated from 21 men with a range of semen parameters presenting to a tertiary male reproductive health clinic. DNA methylation was measured with the Illumina Infinium array at 27,578 CpG loci. Unsupervised clustering of methylation data differentiated the 21 sperm samples by their motility values. Recursively partitioned mixture modeling (RPMM) of methylation data resulted in four distinct methylation profiles that were significantly associated with sperm motility (P = 0.01). Linear models of microarray analysis (LIMMA) was performed based on motility and identified 9,189 CpG loci with significantly altered methylation (Q<0.05) in the low motility samples. In addition, the majority of these disrupted CpG loci (80%) were hypomethylated. Of the aberrantly methylated CpGs, 194 were associated with imprinted genes and were almost equally distributed into hypermethylated (predominantly paternally expressed) and hypomethylated (predominantly maternally expressed) groups. Sperm mRNA was measured with the Human Gene 1.0 ST Affymetrix GeneChip Array. LIMMA analysis identified 20 candidate transcripts as differentially present in low motility sperm, including HDAC1 (NCBI 3065), SIRT3 (NCBI 23410), and DNMT3A (NCBI 1788). There was a trend among altered expression of these epigenetic regulatory genes and RPMM DNA methylation class. Conclusions Using integrative genome-wide approaches we identified CpG methylation profiles and mRNA alterations associated with low sperm motility.
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Affiliation(s)
- Sara E. Pacheco
- Department of Pathology and Laboratory Medicine, Brown University, Providence, Rhode Island, United States of America
| | - E. Andres Houseman
- Department of Community Health, Brown University, Providence, Rhode Island, United States of America
| | - Brock C. Christensen
- Department of Community Health, Brown University, Providence, Rhode Island, United States of America
| | - Carmen J. Marsit
- Department of Pathology and Laboratory Medicine, Brown University, Providence, Rhode Island, United States of America
| | - Karl T. Kelsey
- Department of Pathology and Laboratory Medicine, Brown University, Providence, Rhode Island, United States of America
- Department of Community Health, Brown University, Providence, Rhode Island, United States of America
| | - Mark Sigman
- Division of Urology, Brown University, Providence, Rhode Island, United States of America
| | - Kim Boekelheide
- Department of Pathology and Laboratory Medicine, Brown University, Providence, Rhode Island, United States of America
- * E-mail:
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Hecht N, Cavalcanti MCO, Nayudu P, Behr R, Reichenbach M, Weidner W, Steger K. Protamine-1 represents a sperm specific gene transcript: a study in Callithrix jacchus and Bos taurus. Andrologia 2011; 43:167-73. [PMID: 21486395 DOI: 10.1111/j.1439-0272.2009.01038.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
Spermatozoa are transcriptionally inactive cells, but contain acetylated histones, normally a characteristic of transcriptionally active cells. Acetylgroups are thought to represent epigenetic marks that are transmitted to the oocyte and are involved in starting gene expression in the zygote and in regulating gene expression during early embryogenesis. We performed reverse transcription polymerase chain reaction (RT-PCR) in the common marmoset monkey (Callithrix jacchus) and in bovine spermatozoa, oocytes, zygotes, two- and four-cell embryos to evaluate the presence of specific transcripts known to play a role during fertilisation and early embryo development, namely protamine-1 (PRM1), protamine-2 (PRM2), histone H1 (H1), histone H3 (H3), histone H4 (H4), cAMP-responsive element modulator (CREM), DNA methyltransferase-1 (DNMT1), TATA box-binding protein (TBP). All transcripts tested were present in spermatozoa of the common marmoset, while bull spermatozoa lack PRM2. Marmoset oocytes exhibited transcripts for H1, H3, H4 and TBP, whereas bovine oocytes revealed H1, H3, H4, CREM, DNMT and TBP mRNAs. In zygotes, we amplified H1, H4, TBP (marmoset) and PRM1, H1, H3, H4, CREM, DNMT1 and TBP (bovine). Two-cell embryos showed PCR products for H1, H3 and TBP in the marmoset. In the bovine, all transcripts could be observed except PRM2. In four-cell embryos, PCR signals were obtained for PRM1, H1, H3, H4 and TBP in the marmoset. In the bovine, all transcripts were detected except PRM2. Our data suggest that, in both C. jacchus and Bos taurus, PRM1 transcripts are delivered by the spermatozoon to the oocyte.
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Affiliation(s)
- N Hecht
- Department of Urology, Pediatric Urology and Andrology, Justus Liebig University, Giessen, Germany.
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Steger K, Cavalcanti MCO, Schuppe HC. Prognostic markers for competent human spermatozoa: fertilizing capacity and contribution to the embryo. ACTA ACUST UNITED AC 2010; 34:513-27. [DOI: 10.1111/j.1365-2605.2010.01129.x] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Abstract
The profound architectural changes that transform spermatids into spermatozoa result in a high degree of DNA packaging within the sperm head. However, the mature sperm chromatin that harbors imprinted genes exhibits a dual nucleoprotamine/nucleohistone structure with DNase-sensitive regions, which could be implicated in the establishment of efficient epigenetic information in the developing embryo. Despite its apparent transcriptionally inert state, the sperm nucleus contains diverse RNA populations, mRNAs, antisense and miRNAs, that have been transcribed throughout spermatogenesis. There is also an endogenous reverse transcriptase that may be activated under certain circumstances. It is now commonly accepted that sperm can deliver some RNAs to the ovocyte at fertilization. This review presents potential links between male-specific genomic imprinting, chromatin organization, and the presence of diverse RNA populations within the sperm nucleus and discusses the functional significance of these RNAs in the spermatozoon itself and in the early embryo following fertilization. Some recent data are provided, supporting the view that analyzing the profile of spermatozoal RNAs could be useful for assessment of male fertility.
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Pisani LF, Ramelli P, Lazzari B, Braglia S, Ceciliani F, Mariani P. Characterization of maternal antigen that embryos require (MATER/NLRP5) gene and protein in pig somatic tissues and germ cells. J Reprod Dev 2009; 56:41-8. [PMID: 19815987 DOI: 10.1262/jrd.09-098a] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Maternal effect genes produce mRNA or proteins that accumulate in the egg during oogenesis and control the developmental program until embryonic genome activation takes place. NLRP5 (NLR family, Pyrin domain containing 5), also called MATER (Maternal Antigen That Embryos Require) is one of the genes required for normal early embryonic development, although its precise function remains to be elucidated. The aim of the present study was to analyze the NLRP5 gene expression pattern and protein distribution in somatic tissues and germ cells in the pig. Reverse transcription was performed on mRNA from germinal vescicle (GV) oocytes and total RNA from spermatozoa and tissues from different organs. The transcript for NLRP5 gene was identified only in ovaries and oocytes. The presence of NLRP5 protein was detected only in ovaries by western blot analysis and immunohistochemistry.
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Jackowska M, Kempisty B, Antosik P, Bukowska D, Budna J, Lianeri M, Rosińska E, Woźna M, Jagodziński PP, Jaśkowski JM. The morphology of porcine oocytes is associated with zona pellucida glycoprotein transcript contents. Reprod Biol 2009; 9:79-85. [PMID: 19352420 DOI: 10.1016/s1642-431x(12)60097-7] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We hypothesized that oocyte morphology may be associated with the accumulation of specific mRNAs encoding proteins responsible for the gamete fertilization ability. Therefore, the aim of the study was to evaluate the transcript levels of porcine zona pellucida (pZP1, pZP2, pZP3 and pZP4) glycoproteins in oocytes classified by a four-grade morphological scale (I-IV) accounting for either a homogeneous cytoplasm and a complete cumulus oophorus (grade I) or a heterogenous cytoplasm and decreased number of cumulus layers in the other grades (II, III and IV). We observed a significant increase of all investigated pZP glycoprotein mRNAs in grade I oocytes as compared to other grades (p<0.05). Our observations suggest that porcine oocyte morphology is associated with pZP transcript contents and may be related to an increased fertilization ability of higher quality oocytes.
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Affiliation(s)
- Marta Jackowska
- Department of Agricultural Veterinary, University of Life Sciences, Poznań, Poland
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Kempisty B, Antosik P, Bukowska D, Jackowska M, Lianeri M, Jaśkowski JM, Jagodziński PP. Assessment of zona pellucida glycoprotein and integrin transcript contents in porcine oocytes. Reprod Biol 2009; 9:71-8. [PMID: 19352419 DOI: 10.1016/s1642-431x(12)60096-5] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Using reverse transcription and real-time quantitative PCR analysis we evaluated the transcript levels of integrins (alphaL, alphaM, beta1, and beta6), CD9 and CD18 antigens as well as zona pellucida glycoproteins (pZP1, pZP2, pZP3 and pZP3alpha) in oocytes isolated from puberal gilts (n=20) and multiparous sows (n=20). We found significantly (p<0.05) higher transcript contents of alphaL, alphaM, beta1, and beta integrins, CD9 antigen, and pZP2 and pZP3 in puberal gilt oocytes compared to multiparous sow oocytes. Our results suggest that a decrease in the level of oocyte transcripts encoding essential proteins involved in oocyte fertilization may be associated with increased porcine female age.
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Affiliation(s)
- Bartosz Kempisty
- Department of Biochemistry, University of Medical Sciences, 6 Swiecickiego St., 60-781 Poznań, Poland
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ANTOSIK P, KEMPISTY B, BUKOWSKA D, JACKOWSKA M, WLODARCZYK R, BUDNA J, BRÜSSOW KP, LIANERI M, JAGODZINSKI PP, JASKOWSKI JM. Follicular Size is Associated with the Levels of Transcripts and Proteins of Selected Molecules Responsible for the Fertilization Ability of Oocytes of Puberal Gilts. J Reprod Dev 2009; 55:588-93. [DOI: 10.1262/jrd.20252] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
- Pawel ANTOSIK
- Department of Agricultural Veterinary, University of Life Sciences
| | - Bartosz KEMPISTY
- Department of Biochemistry and Molecular Biology, University of Medical Sciences
| | - Dorota BUKOWSKA
- Department of Agricultural Veterinary, University of Life Sciences
| | - Marta JACKOWSKA
- Department of Agricultural Veterinary, University of Life Sciences
| | | | - Joanna BUDNA
- Department of Biochemistry and Molecular Biology, University of Medical Sciences
| | - Klaus-Peter BRÜSSOW
- Department of Reproductive Biology, FBN Research Institute for the Biology of Farm Animals
| | | | - Pawel P. JAGODZINSKI
- Department of Biochemistry and Molecular Biology, University of Medical Sciences
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Hecht N, Behr R, Hild A, Bergmann M, Weidner W, Steger K. The common marmoset (Callithrix jacchus) as a model for histone and protamine expression during human spermatogenesis. Hum Reprod 2008; 24:536-45. [DOI: 10.1093/humrep/den390] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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