1
|
Kaur R, Meier CJ, McGraw EA, Hillyer JF, Bordenstein SR. The mechanism of cytoplasmic incompatibility is conserved in Wolbachia-infected Aedes aegypti mosquitoes deployed for arbovirus control. PLoS Biol 2024; 22:e3002573. [PMID: 38547237 PMCID: PMC11014437 DOI: 10.1371/journal.pbio.3002573] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Revised: 04/12/2024] [Accepted: 03/01/2024] [Indexed: 04/13/2024] Open
Abstract
The rising interest and success in deploying inherited microorganisms and cytoplasmic incompatibility (CI) for vector control strategies necessitate an explanation of the CI mechanism. Wolbachia-induced CI manifests in the form of embryonic lethality when sperm from Wolbachia-bearing testes fertilize eggs from uninfected females. Embryos from infected females however survive to sustain the maternally inherited symbiont. Previously in Drosophila melanogaster flies, we demonstrated that CI modifies chromatin integrity in developing sperm to bestow the embryonic lethality. Here, we validate these findings using wMel-transinfected Aedes aegypti mosquitoes released to control vector-borne diseases. Once again, the prophage WO CI proteins, CifA and CifB, target male gametic nuclei to modify chromatin integrity via an aberrant histone-to-protamine transition. Cifs are not detected in the embryo, and thus elicit CI via the nucleoprotein modifications established pre-fertilization. The rescue protein CifA in oogenesis localizes to stem cell, nurse cell, and oocyte nuclei, as well as embryonic DNA during embryogenesis. Discovery of the nuclear targeting Cifs and altered histone-to-protamine transition in both Aedes aegypti mosquitoes and D. melanogaster flies affirm the Host Modification Model of CI is conserved across these host species. The study also newly uncovers the cell biology of Cif proteins in the ovaries, CifA localization in the embryos, and an impaired histone-to-protamine transition during spermiogenesis of any mosquito species. Overall, these sperm modification findings may enable future optimization of CI efficacy in vectors or pests that are refractory to Wolbachia transinfections.
Collapse
Affiliation(s)
- Rupinder Kaur
- Pennsylvania State University, Departments of Biology and Entomology, University Park, Pennsylvania, United States of America
- Pennsylvania State University, One Health Microbiome Center, Huck Institutes of the Life Sciences, University Park, Pennsylvania, United States of America
- Vanderbilt University, Department of Biological Sciences, Nashville, Tennessee, United States of America
| | - Cole J. Meier
- Vanderbilt University, Department of Biological Sciences, Nashville, Tennessee, United States of America
| | - Elizabeth A. McGraw
- Pennsylvania State University, Departments of Biology and Entomology, University Park, Pennsylvania, United States of America
- Pennsylvania State University, One Health Microbiome Center, Huck Institutes of the Life Sciences, University Park, Pennsylvania, United States of America
- Pennsylvania State University, Center for Infectious Disease Dynamics, Huck Institutes of the Life Sciences, University Park, Pennsylvania, United States of America
| | - Julian F. Hillyer
- Vanderbilt University, Department of Biological Sciences, Nashville, Tennessee, United States of America
| | - Seth R. Bordenstein
- Pennsylvania State University, Departments of Biology and Entomology, University Park, Pennsylvania, United States of America
- Pennsylvania State University, One Health Microbiome Center, Huck Institutes of the Life Sciences, University Park, Pennsylvania, United States of America
- Vanderbilt University, Department of Biological Sciences, Nashville, Tennessee, United States of America
| |
Collapse
|
2
|
Hernandez Mora JR, Buhigas C, Clark S, Del Gallego Bonilla R, Daskeviciute D, Monteagudo-Sánchez A, Poo-Llanillo ME, Medrano JV, Simón C, Meseguer M, Kelsey G, Monk D. Single-cell multi-omic analysis profiles defective genome activation and epigenetic reprogramming associated with human pre-implantation embryo arrest. Cell Rep 2023; 42:112100. [PMID: 36763500 DOI: 10.1016/j.celrep.2023.112100] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Revised: 10/14/2022] [Accepted: 01/26/2023] [Indexed: 02/11/2023] Open
Abstract
During pre-implantation stages of mammalian development, maternally stored material promotes both the erasure of the sperm and oocyte epigenetic profiles and is responsible for concomitant genome activation. Here, we have utilized single-cell methylome and transcriptome sequencing (scM&T-seq) to quantify both mRNA expression and DNA methylation in oocytes and a developmental series of human embryos at single-cell resolution. We fully characterize embryonic genome activation and maternal transcript degradation and map key epigenetic reprogramming events in developmentally high-quality embryos. By comparing these signatures with early embryos that have undergone spontaneous cleavage-stage arrest, as determined by time-lapse imaging, we identify embryos that fail to appropriately activate their genomes or undergo epigenetic reprogramming. Our results indicate that a failure to successfully accomplish these essential milestones impedes the developmental potential of pre-implantation embryos and is likely to have important implications, similar to aneuploidy, for the success of assisted reproductive cycles.
Collapse
Affiliation(s)
| | - Claudia Buhigas
- Biomedical Research Centre, School of Biological Sciences, University of East Anglia, Norwich Research Park, Norwich NR4 7JT, UK
| | - Stephen Clark
- The Babraham Institute, Babraham, Cambridge CB22 3AT, UK
| | | | - Dagne Daskeviciute
- Biomedical Research Centre, School of Biological Sciences, University of East Anglia, Norwich Research Park, Norwich NR4 7JT, UK
| | | | | | - Jose Vicente Medrano
- IVI-RMA Global and Health Research Institute la Fe, 46026 Valencia, Spain; Department of Obstetrics and Gynecology, Valencia University and INCLIVA, 46010 Valencia, Spain
| | - Carlos Simón
- Department of Obstetrics and Gynecology, Valencia University and INCLIVA, 46010 Valencia, Spain; Department of Obstetrics and Gynecology, BIDMC, Harvard University, Boston, MA 02215, USA
| | - Marcos Meseguer
- IVI-RMA Global and Health Research Institute la Fe, 46026 Valencia, Spain
| | - Gavin Kelsey
- The Babraham Institute, Babraham, Cambridge CB22 3AT, UK; Centre for Trophoblast Research, University of Cambridge, Cambridge CB2 3EL, UK; Wellcome-MRC Institute of Metabolic Science-Metabolic Research Laboratories, Cambridge CB2 0QQ, UK
| | - David Monk
- Bellvitge Institute for Biomedical Research, 08908 Barcelona, Spain; Biomedical Research Centre, School of Biological Sciences, University of East Anglia, Norwich Research Park, Norwich NR4 7JT, UK.
| |
Collapse
|
3
|
Sakai H, Yokoyama T, Tomita S. Observing silkworm embryos at the fertilization stage using a tissue clearing reagent. JOURNAL OF INSECT PHYSIOLOGY 2022; 139:104386. [PMID: 35358539 DOI: 10.1016/j.jinsphys.2022.104386] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Revised: 03/02/2022] [Accepted: 03/25/2022] [Indexed: 06/14/2023]
Abstract
There are various reports on embryogenesis in silkworm, Bombyx mori, a model organism for lepidopteran insects. New tissue observation methods have been developed with the development of biological science. Applying these methods to silkworm eggs makes it possible to capture morphological and histological features that have not been observed until now. Tissue transparency technology is a method of observation that has advanced remarkably recently. This study emphasized the CUBIC (Clear, Unobstructed Brain/Body Imaging Cocktails and Computational analysis) method. The tissue clearing reagent used in CUBIC is water-soluble, containing urea and amino alcohol, which easily and effectively clears animal tissue by immersing the sample in the reagent. This study showed that silkworm eggs are made transparent using the modified CUBIC method at the fertilization stage. Furthermore, we observed the behavior of egg nucleus, polar body nuclei, and sperm nuclei at the fertilization stage.
Collapse
Affiliation(s)
- Hiroki Sakai
- Institute of Agrobiological Sciences, National Agriculture and Food Research Organization, 1-2 Owashi, Tsukuba, Ibaraki 305-8634, Japan.
| | - Takeshi Yokoyama
- Department of United Graduate School of Agricultural Science, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu, Tokyo 183-8509, Japan
| | - Shuichiro Tomita
- Institute of Agrobiological Sciences, National Agriculture and Food Research Organization, 1-2 Owashi, Tsukuba, Ibaraki 305-8634, Japan.
| |
Collapse
|
4
|
Nguyen HT, Dang-Nguyen TQ, Somfai T, Men NT, Beck-Woerner B, Viet Linh N, Xuan Nguyen B, Noguchi J, Kaneko H, Kikuchi K. Excess polyspermy reduces the ability of porcine oocytes to promote male pronuclear formation after in vitro fertilization. Anim Sci J 2021; 92:e13650. [PMID: 34697861 PMCID: PMC9286444 DOI: 10.1111/asj.13650] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Revised: 09/10/2021] [Accepted: 09/23/2021] [Indexed: 11/28/2022]
Abstract
Male pronucleus (MPN) formation is a very important physiological event during fertilization, which affects in vitro production of transferrable embryos. The aim of this study was to find out the correlation between the number of penetrated sperm and the occurrence of failure of MPN formation in porcine oocytes. In vitro matured porcine oocytes were fertilized in vitro with frozen epididymal sperm. Two different frozen sperm lots were tested in this study, which were different in terms of polyspermy rates. The numbers and the status of penetrated sperm in oocytes were evaluated 10 h after insemination. Under high polyspermy condition, the polyspermy rate was 83.5% with an average mean of 3.5 sperms per penetrated oocyte, whereas the percentage of polyspermy was 65.5% with an average mean of 2.4 sperms per penetrated oocyte under moderate polyspermic condition. Correlation analysis revealed a negative correlation between the number of penetrated sperm and their MPN formation percentage both in the sperm lot of high polyspermy (R = −0.560, p < 0.05) and in the sperm lot of moderate polyspermy (R = −0.405, p < 0.05) which suggests that penetration of excessive spermatozoa disables the oocyte cytoplasm to promote MPN formation.
Collapse
Affiliation(s)
- Hiep Thi Nguyen
- Institute of Agrobiological Sciences, National Agriculture and Food Research Organization (NARO), Tsukuba, Japan.,The United Graduate School of Veterinary Science, Yamaguchi University, Yamaguchi, Japan.,Institute of Biotechnology, Vietnam Academy of Science and Technology, Hanoi, Vietnam
| | - Thanh Quang Dang-Nguyen
- Institute of Agrobiological Sciences, National Agriculture and Food Research Organization (NARO), Tsukuba, Japan
| | - Tamas Somfai
- Institute of Agrobiological Sciences, National Agriculture and Food Research Organization (NARO), Tsukuba, Japan
| | - Nguyen Thi Men
- Institute of Agrobiological Sciences, National Agriculture and Food Research Organization (NARO), Tsukuba, Japan
| | - Barbara Beck-Woerner
- Life Sciences and Facility Management, Zurich University of Applied Sciences, Wädenswil, Switzerland
| | - Nguyen Viet Linh
- Institute of Biotechnology, Vietnam Academy of Science and Technology, Hanoi, Vietnam
| | - Bui Xuan Nguyen
- Institute of Biotechnology, Vietnam Academy of Science and Technology, Hanoi, Vietnam
| | - Junko Noguchi
- Institute of Agrobiological Sciences, National Agriculture and Food Research Organization (NARO), Tsukuba, Japan
| | - Hiroyuki Kaneko
- Institute of Agrobiological Sciences, National Agriculture and Food Research Organization (NARO), Tsukuba, Japan
| | - Kazuhiro Kikuchi
- Institute of Agrobiological Sciences, National Agriculture and Food Research Organization (NARO), Tsukuba, Japan.,The United Graduate School of Veterinary Science, Yamaguchi University, Yamaguchi, Japan
| |
Collapse
|
5
|
Xiong L, Ye X, Chen Z, Fu H, Li S, Xu P, Yu J, Wen L, Gao R, Fu Y, Qi H, Kilby MD, Saffery R, Baker PN, Tong C. Advanced Maternal Age-associated SIRT1 Deficiency Compromises Trophoblast Epithelial-Mesenchymal Transition through an Increase in Vimentin Acetylation. Aging Cell 2021; 20:e13491. [PMID: 34605151 PMCID: PMC8520724 DOI: 10.1111/acel.13491] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2021] [Revised: 09/05/2021] [Accepted: 09/19/2021] [Indexed: 12/12/2022] Open
Abstract
Advanced maternal age (AMA) pregnancies are rapidly increasing and are associated with aberrant trophoblast cell function, poor placentation, and unfavorable pregnancy outcomes, presumably due to premature placental senescence. SIRT1 is an NAD+ -dependent deacetylase with well-known antiaging effects, but its connection with placental senescence is unreported. In this study, human term placentas and first-trimester villi were collected from AMA and normal pregnancies, and a mouse AMA model was established by cross breeding young and aged male and female C57 mice. SIRT1 expression and activity in HTR8/SVneo cells were genetically or pharmacologically manipulated. Trophoblast-specific Sirt1-knockout (KO) mouse placentas were generated by mating Elf5-Cre and Sirt1fl/fl mice. Trophoblast cell mobility was assessed with transwell invasion and wound-healing assays. SIRT1-binding proteins in HTR8/SVneo cells and human placental tissue were identified by mass spectrometry. We identified SIRT1 as the only differentially expressed sirtuin between AMA and normal placentas. It is downregulated in AMA placentas early in the placental life cycle and is barely impacted by paternal age. SIRT1 loss upregulates P53 acetylation and P21 expression and impairs trophoblast invasion and migration. Sirt1-KO mouse placentas exhibit senescence markers and morphological disruption, along with decreased fetal weight. In trophoblasts, SIRT1 interacts with vimentin, regulating its acetylation. In conclusion, SIRT1 promotes trophoblast epithelial-mesenchymal transition (EMT) to enhance invasiveness by modulating vimentin acetylation. AMA placentas are associated with premature senescence during placentation due to SIRT1 loss. Therefore, SIRT1 may be an antiaging therapeutic target for improving placental development and perinatal outcomes in AMA pregnancies.
Collapse
Affiliation(s)
- Liling Xiong
- Department of Obstetrics The First Affiliated Hospital of Chongqing Medical University Chongqing China
- Ministry of Education‐International Collaborative Laboratory of Reproduction and Development Chongqing China
- State Key Laboratory of Maternal and Fetal Medicine of Chongqing Municipality Chongqing China
| | - Xuan Ye
- Department of Obstetrics The First Affiliated Hospital of Chongqing Medical University Chongqing China
- Ministry of Education‐International Collaborative Laboratory of Reproduction and Development Chongqing China
- State Key Laboratory of Maternal and Fetal Medicine of Chongqing Municipality Chongqing China
| | - Zhi Chen
- Department of Obstetrics The First Affiliated Hospital of Chongqing Medical University Chongqing China
- Ministry of Education‐International Collaborative Laboratory of Reproduction and Development Chongqing China
- State Key Laboratory of Maternal and Fetal Medicine of Chongqing Municipality Chongqing China
| | - Huijia Fu
- Department of Obstetrics The First Affiliated Hospital of Chongqing Medical University Chongqing China
- Ministry of Education‐International Collaborative Laboratory of Reproduction and Development Chongqing China
- State Key Laboratory of Maternal and Fetal Medicine of Chongqing Municipality Chongqing China
| | - Sisi Li
- Department of Obstetrics The First Affiliated Hospital of Chongqing Medical University Chongqing China
- Ministry of Education‐International Collaborative Laboratory of Reproduction and Development Chongqing China
- State Key Laboratory of Maternal and Fetal Medicine of Chongqing Municipality Chongqing China
| | - Ping Xu
- Department of Obstetrics The First Affiliated Hospital of Chongqing Medical University Chongqing China
- Ministry of Education‐International Collaborative Laboratory of Reproduction and Development Chongqing China
- State Key Laboratory of Maternal and Fetal Medicine of Chongqing Municipality Chongqing China
| | - Jiaxiao Yu
- Department of Obstetrics The First Affiliated Hospital of Chongqing Medical University Chongqing China
- Ministry of Education‐International Collaborative Laboratory of Reproduction and Development Chongqing China
- State Key Laboratory of Maternal and Fetal Medicine of Chongqing Municipality Chongqing China
| | - Li Wen
- Department of Obstetrics The First Affiliated Hospital of Chongqing Medical University Chongqing China
- Ministry of Education‐International Collaborative Laboratory of Reproduction and Development Chongqing China
- State Key Laboratory of Maternal and Fetal Medicine of Chongqing Municipality Chongqing China
| | - Rufei Gao
- Ministry of Education‐International Collaborative Laboratory of Reproduction and Development Chongqing China
- Laboratory of Reproductive Biology School of Public Health and Management Chongqing Medical University Chongqing China
| | - Yong Fu
- Department of Obstetrics The First Affiliated Hospital of Chongqing Medical University Chongqing China
- Ministry of Education‐International Collaborative Laboratory of Reproduction and Development Chongqing China
- State Key Laboratory of Maternal and Fetal Medicine of Chongqing Municipality Chongqing China
| | - Hongbo Qi
- Department of Obstetrics The First Affiliated Hospital of Chongqing Medical University Chongqing China
- Ministry of Education‐International Collaborative Laboratory of Reproduction and Development Chongqing China
- State Key Laboratory of Maternal and Fetal Medicine of Chongqing Municipality Chongqing China
| | - Mark D. Kilby
- Institute of Metabolism and System Research University of Birmingham Edgbaston UK
| | - Richard Saffery
- Ministry of Education‐International Collaborative Laboratory of Reproduction and Development Chongqing China
- Cancer, Disease and Developmental Epigenetics Murdoch Children’s Research Institute Parkville Victoria Australia
| | - Philip N. Baker
- College of Life Sciences University of Leicester Leicester UK
| | - Chao Tong
- Department of Obstetrics The First Affiliated Hospital of Chongqing Medical University Chongqing China
- Ministry of Education‐International Collaborative Laboratory of Reproduction and Development Chongqing China
- State Key Laboratory of Maternal and Fetal Medicine of Chongqing Municipality Chongqing China
| |
Collapse
|
6
|
Le Blévec E, Muroňová J, Ray PF, Arnoult C. Paternal epigenetics: Mammalian sperm provide much more than DNA at fertilization. Mol Cell Endocrinol 2020; 518:110964. [PMID: 32738444 DOI: 10.1016/j.mce.2020.110964] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Revised: 07/22/2020] [Accepted: 07/22/2020] [Indexed: 12/16/2022]
Abstract
The spermatozoon is a highly differentiated cell with unique characteristics: it is mobile, thanks to its flagellum, and is very compact. The sperm cytoplasm is extremely reduced, containing no ribosomes, and therefore does not allow translation, and its nucleus contains very closed chromatin, preventing transcription. This DNA compaction is linked to the loss of nucleosomes and the replacement of histones by protamines. Based on these characteristics, sperm was considered to simply deliver paternal DNA to the oocyte. However, some parts of the sperm DNA remain organized in a nucleosomal format, and bear epigenetic information. In addition, the nucleus and the cytoplasm contain a multitude of RNAs of different types, including non-coding RNAs (ncRNAs) which also carry epigenetic information. For a long time, these RNAs were considered residues of spermatogenesis. After briefly describing the mechanisms of compaction of sperm DNA, we focus this review on the origin and function of the different ncRNAs. We present studies demonstrating the importance of these RNAs in embryonic development and transgenerational adaptation to stress. We also look at other epigenetic marks, such as DNA methylation or post-translational modifications of histones, and show that they are sensitive to environmental stress and transmissible to offspring. The post-fertilization role of certain sperm-borne proteins is also discussed.
Collapse
Affiliation(s)
- Emilie Le Blévec
- Université Grenoble Alpes, Grenoble, F-38000, France; Institute for Advanced Biosciences INSERM U1209, CNRS UMR5309, Grenoble, F-38000, France; IMV Technologies, ZI N° 1 Est, L'Aigle, F-61300, France
| | - Jana Muroňová
- Université Grenoble Alpes, Grenoble, F-38000, France; Institute for Advanced Biosciences INSERM U1209, CNRS UMR5309, Grenoble, F-38000, France
| | - Pierre F Ray
- Université Grenoble Alpes, Grenoble, F-38000, France; Institute for Advanced Biosciences INSERM U1209, CNRS UMR5309, Grenoble, F-38000, France; CHU de Grenoble, UM GI-DPI, Grenoble, F-38000, France
| | - Christophe Arnoult
- Université Grenoble Alpes, Grenoble, F-38000, France; Institute for Advanced Biosciences INSERM U1209, CNRS UMR5309, Grenoble, F-38000, France.
| |
Collapse
|
7
|
Male Factors: the Role of Sperm in Preimplantation Embryo Quality. Reprod Sci 2020; 28:1788-1811. [DOI: 10.1007/s43032-020-00334-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Accepted: 09/25/2020] [Indexed: 12/19/2022]
|
8
|
Peris-Frau P, Álvarez-Rodríguez M, Martín-Maestro A, Iniesta-Cuerda M, Sánchez-Ajofrín I, Medina-Chávez DA, Garde JJ, Villar M, Rodríguez-Martínez H, Soler AJ. Unravelling how in vitro capacitation alters ram sperm chromatin before and after cryopreservation. Andrology 2020; 9:414-425. [PMID: 32888251 DOI: 10.1111/andr.12900] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2020] [Revised: 08/17/2020] [Accepted: 08/30/2020] [Indexed: 12/13/2022]
Abstract
BACKGROUND Sperm chromatin structure provides valuable information for the prediction of male fertility and can be altered during different procedures. Previous studies have shown that sperm chromatin condensation decreased during in vitro capacitation. Moreover, cryopreservation can affect sperm DNA integrity and chromatin compaction. OBJECTIVES This study aimed to investigate dynamic modifications produced in the chromatin structure of ram spermatozoa during in vitro capacitation before and after cryopreservation. MATERIALS AND METHODS Chromatin decondensation (AB+), DNA methylation, DNA fragmentation index (%DFI) and high DNA stainability (HDS) were evaluated in fresh and frozen-thawed ram spermatozoa incubated under capacitating (CAP) conditions at 1, 5, 15, 30, 60, 120, 180 and 240 minutes and under non-capacitating (NC) conditions at 0, 15 and 240 minutes. RESULTS Incubation in NC conditions did not induce significant changes in chromatin condensation (P > .05; AB + and HDS). However, incubation of fresh and cryopreserved ram spermatozoa under CAP conditions significantly increased chromatin decondensation (P < .05), reaching the highest percentage of AB + and HDS from 180 to 240 minutes in fresh samples and from 5 to 30 minutes in cryopreserved samples. Both variables (HDS and AB+) were positively correlated with tyrosine phosphorylation, total motility, progressive motility, curvilinear velocity and amplitude of lateral head displacement, as well as between them under CAP conditions in fresh and cryopreserved spermatozoa. DNA methylation significantly increased in cryopreserved spermatozoa (P < .05), but only after extended incubation under CAP conditions (60-240 minutes), while the %DFI, albeit higher in cryopreserved samples, remained constant under CAP and NC conditions in both types of sample (P > .05). DISCUSSION AND CONCLUSIONS Our results suggest that sperm chromatin condensation decreased progressively during in vitro capacitation of ram spermatozoa, while sperm DNA integrity remained intact. Such changes in chromatin condensation appeared faster after sperm cryopreservation.
Collapse
Affiliation(s)
- Patricia Peris-Frau
- SaBio IREC (CSIC - UCLM-JCCM), ETSIAM, Albacete, Spain.,Department of Biomedical and Clinical Sciences (BKV), BHK/Obstetrics & Gynaecology, Linköping University, Linköping, Sweden
| | - Manuel Álvarez-Rodríguez
- Department of Biomedical and Clinical Sciences (BKV), BHK/Obstetrics & Gynaecology, Linköping University, Linköping, Sweden
| | | | | | | | | | | | - Margarita Villar
- SaBio IREC (CSIC - UCLM-JCCM), ETSIAM, Albacete, Spain.,Biochemistry Section, Faculty of Science, Chemical Technologies, and Regional Centre for Biomedical Research (CRIB), Albacete, Spain
| | - Heriberto Rodríguez-Martínez
- Department of Biomedical and Clinical Sciences (BKV), BHK/Obstetrics & Gynaecology, Linköping University, Linköping, Sweden
| | | |
Collapse
|
9
|
Ruebel ML, Latham KE. Listening to mother: Long-term maternal effects in mammalian development. Mol Reprod Dev 2020; 87:399-408. [PMID: 32202026 DOI: 10.1002/mrd.23336] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Accepted: 03/08/2020] [Indexed: 12/17/2022]
Abstract
The oocyte is a complex cell that executes many crucial and unique functions at the start of each life. These functions are fulfilled by a unique collection of macromolecules and other factors, all of which collectively support meiosis, oocyte activation, and embryo development. This review focuses on the effects of oocyte components on developmental processes that occur after the initial stages of embryogenesis. These include long-term effects on genome function, metabolism, lineage allocation, postnatal progeny health, and even subsequent generations. Factors that regulate chromatin structure, genome programming, and mitochondrial function are elements that contribute to these oocyte functions.
Collapse
Affiliation(s)
- Meghan L Ruebel
- Department of Animal Science, and Reproductive and Developmental Sciences Program, Michigan State University, East Lansing, Michigan
| | - Keith E Latham
- Department of Animal Science, and Reproductive and Developmental Sciences Program, Michigan State University, East Lansing, Michigan
| |
Collapse
|
10
|
Zhang Z, Mu S, Chen T, Sun Z, Shu Z, Li Y, Kang X. H4S1ph, an alternative epigenetic marker for sperm maturity. Andrologia 2019; 52:e13352. [PMID: 31746491 DOI: 10.1111/and.13352] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2018] [Revised: 03/31/2019] [Accepted: 05/16/2019] [Indexed: 12/11/2022] Open
Abstract
Histone phosphorylation, an epigenetic post-translational modification, plays essential roles in male gamete chromatin compaction during spermatogenesis and sperm maturity. Previously, we studied the epigenetic marker of phosphorylated serine 1 of histone H2A and H4 (HS1ph) during spermatogenesis in mice and crabs, which was shown to be closely related to the sperm maturity. To further investigate the correlation between phosphorylated serine 1 of histone H4 (H4S1ph) and sperm maturation, a comparison study was conducted in this work between the healthy and the precocious crabs. It was discovered that the distribution of H4S1ph was similar for the two groups of crabs during spermatogenesis before maturity, but totally different in the sperm nuclei. H4S1ph vanished in the nuclei of healthy crab spermatozoa mostly, while retained in the precocious crabs just like what it was in elongated spermatid of both kinds of crabs. The results showed that a high level of H4S1ph conservation was closely associated with immaturity and might indicate inefficient fertility of male precocious crabs. Thus, H4S1ph was suggested to be an epigenetic marker of sperm maturity.
Collapse
Affiliation(s)
- Zhaohui Zhang
- College of Life Sciences, Hebei University, Baoding, China.,Department of Reproductive Medicine, Baoding First Central Hospital, Baoding, China
| | - Shumei Mu
- College of Life Sciences, Hebei University, Baoding, China
| | - Tingrong Chen
- College of Life Sciences, Hebei University, Baoding, China
| | - Zhe Sun
- College of Life Sciences, Hebei University, Baoding, China
| | - Zhiquan Shu
- School of Mechanical and Materials Engineering, Washington State University, Everett, Washington
| | - Yanqin Li
- College of Life Sciences, Hebei University, Baoding, China
| | - Xianjiang Kang
- College of Life Sciences, Hebei University, Baoding, China
| |
Collapse
|
11
|
Nuclear formation induced by DNA-conjugated beads in living fertilised mouse egg. Sci Rep 2019; 9:8461. [PMID: 31186495 PMCID: PMC6560220 DOI: 10.1038/s41598-019-44941-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2019] [Accepted: 05/17/2019] [Indexed: 11/08/2022] Open
Abstract
Reformation of a functional nucleus at the end of mitosis is crucial for normal cellular activity. Reconstitution approaches using artificial beads in frog egg extracts have clarified the molecules required for nuclear formation in vitro. However, the spatiotemporal regulation of these components, which is required for the formation of a functional nucleus in living embryos, remains unknown. Here we demonstrate that exogenous DNA introduced in the form of DNA-conjugated beads induces the assembly of an artificial nucleus in living mouse cleavage-stage embryos. Live-cell imaging and immunofluorescence studies revealed that core histones and regulator of chromosome condensation 1 (RCC1) assembled on the DNA, suggesting that nucleosomes were formed. Electron microscopy showed that double-membrane structures, partly extended from annulate lamellae, formed around the beads. Nuclear pore complex-like structures indistinguishable from those of native nuclei were also formed, suggesting that this membranous structure resembled the normal nuclear envelope (NE). However, the reconstituted NE had no nuclear import activity, probably because of the absence of Ras-related nuclear protein (Ran). Thus, DNA is necessary for NE reassembly in mouse embryos but is insufficient to form a functional nucleus. This approach provides a new tool to examine factors of interest and their spatiotemporal regulation in nuclear formation.
Collapse
|
12
|
Takeda K, Kobayashi E, Nishino K, Imai A, Adachi H, Hoshino Y, Iwao K, Akagi S, Kaneda M, Watanabe S. Age-related changes in DNA methylation levels at CpG sites in bull spermatozoa and in vitro fertilization-derived blastocyst-stage embryos revealed by combined bisulfite restriction analysis. J Reprod Dev 2019; 65:305-312. [PMID: 31061296 PMCID: PMC6708852 DOI: 10.1262/jrd.2018-146] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Age-associated methylation changes in genomic DNA have been recently reported in spermatozoa, and these changes can contribute to decline in fertility. In a previous study, we analyzed the
genome-wide DNA methylation profiles of bull spermatozoa using a human DNA methylation microarray and identified one CpG site (CpG-1) that potentially reflects age-related methylation
changes. In the present study, cryopreserved semen samples from a Japanese Black bull were collected at five different ages, which were referred to as JD1-5: 14, 19, 28, 54, and 162 months,
respectively, and were used for genome-wide DNA methylation analysis and in vitro fertilization (IVF). Distinct age-related changes in methylation profiles were observed,
and 77 CpG sites were found to be differently methylated between young and adult samples (JD1-2 vs. JD4-5). Using combined bisulfite restriction analysis (COBRA), nine CpG
sites (including CpG-1) were confirmed to exhibit significant differences in their age-dependent methylation levels. Eight CpG sites showed an age-dependent increase in their methylation
levels, whereas only one site showed age-dependent hypomethylation; in particular, these changes in methylation levels occurred rapidly at a young age. COBRA revealed low methylation levels
in some CpG regions in the majority of the IVF blastocyst-stage embryos derived from spermatozoa at JD2-5. Interestingly, bulls with different ages did not show differences in their
methylation levels. In conclusion, our findings indicated that methylation levels at nine CpG sites in spermatozoa changed with increasing age and that some CpG regions were demethylated
after fertilization. Further studies are required to determine whether age-dependent different methylation levels in bull spermatozoa can affect fertility.
Collapse
Affiliation(s)
- Kumiko Takeda
- Institute of Livestock and Grassland Science, NARO, Ibaraki 305-0901, Japan
| | - Eiji Kobayashi
- Institute of Livestock and Grassland Science, NARO, Ibaraki 305-0901, Japan
| | - Kagetomo Nishino
- Beef Cattle Institute, Ibaraki Prefectural Livestock Research Center, Ibaraki 319-2224, Japan
| | - Akira Imai
- Hiroshima Prefectural Livestock Technology Research Center, Hiroshima 739-0151, Japan
| | - Hiromichi Adachi
- Hida Beef Cattle Research, Gifu Prefectural Livestock Research Institute, Gifu 506-0101, Japan
| | - Yoichiro Hoshino
- Hida Beef Cattle Research, Gifu Prefectural Livestock Research Institute, Gifu 506-0101, Japan.,Kyoto University, Kyoto 622-0203, Japan
| | - Ken Iwao
- Tottori Prefectural Livestock Research Institute, Tottori 689-2503, Japan
| | - Satoshi Akagi
- Institute of Livestock and Grassland Science, NARO, Ibaraki 305-0901, Japan
| | - Masahiro Kaneda
- Tokyo University of Agriculture and Technology, Tokyo 183-8509, Japan
| | - Shinya Watanabe
- Institute of Livestock and Grassland Science, NARO, Ibaraki 305-0901, Japan
| |
Collapse
|
13
|
Ho NTK, Nguyen TVT, Nguyen TV, Bui HT. Epigenetic impairments in development of parthenogenetic preimplantation mouse embryos. J Reprod Dev 2018; 65:83-90. [PMID: 30606958 PMCID: PMC6379762 DOI: 10.1262/jrd.2018-028] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Parthenogenesis is an activation process of oocytes that occur without the participation of sperm. Evidence suggests that normal development of embryos requires proper expression of several
imprinted genes inherited from both the paternal and maternal genomes. Compared to gene expression, histone modifications and chromatin remodeling are not well-documented. In this research,
by using immunofluorescence staining for several developmental-associated histone modifications, we investigated whether epigenetic impairments in parthenogenetic embryos act as constraints
for proper development. At early stages, fertilized embryos exhibited high methylation of histone H3 at lysine 9 (Me-H3-K9) and Heterochromatin Protein 1 (HP1) present in the maternal
chromatin, while paternal chromatin showed weaker HP1 signals. We found that at the two-cell stage in fertilized embryos, HP1, initially detected around the nucleolus, colocalized with
chromocenters at one pole of the blastomere, while parthenotes showed a diffused distribution pattern of HP1 throughout the entire nucleoplasm. At the four-cell stage, methylation of histone
H3 at arginine 26 (Me-H3-R26) increased at nascent RNA repression sites in fertilized embryos, while parthenotes recorded weaker signals throughout the nucleoplasm, suggesting differences in
pluripotency of the ICM cells between the two types of embryos. Moreover, at the blastocyst stage, we observed that the acetylation level of histone H4 at lysine 12 (Ac-H4-K12) was
significantly decreased in parthenogenetic ICM compared to that in its fertilized counterpart. To summarize, differences in epigenetic modifications correlating with paternal chromatin’s
capacity to regulate nascent RNA repression may contribute to aberrant development and lineage allocation in mouse parthenogenetic embryos.
Collapse
Affiliation(s)
- Ngan Thi Kim Ho
- Cellular Reprogramming Laboratory, School of Biotechnology, International University, Vietnam National University, Ho Chi Minh City 700000, Vietnam
| | - Thuy Van Thi Nguyen
- Cellular Reprogramming Laboratory, School of Biotechnology, International University, Vietnam National University, Ho Chi Minh City 700000, Vietnam
| | - Thuan Van Nguyen
- Cellular Reprogramming Laboratory, School of Biotechnology, International University, Vietnam National University, Ho Chi Minh City 700000, Vietnam
| | - Hong-Thuy Bui
- Cellular Reprogramming Laboratory, School of Biotechnology, International University, Vietnam National University, Ho Chi Minh City 700000, Vietnam
| |
Collapse
|
14
|
Dhawan V, Kumar M, Deka D, Malhotra N, Singh N, Dadhwal V, Dada R. Paternal factors and embryonic development: Role in recurrent pregnancy loss. Andrologia 2018; 51:e13171. [PMID: 30324700 DOI: 10.1111/and.13171] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2018] [Revised: 08/18/2018] [Accepted: 08/27/2018] [Indexed: 12/29/2022] Open
Abstract
The events occurring at the maternal-foetal interface define a successful pregnancy but the current paradigm has shifted towards assessing the contribution of spermatozoa for embryogenesis. Spermatozoa with defective DNA integrity may fertilise the oocyte but affect subsequent embryonic development. The present case-control study was conducted in male partners of couples experiencing recurrent pregnancy loss (RPL) to assess the gene expression of spermatozoal FOXG1, SOX3, OGG1, PARP1, RPS6, RBM9, RPS17 and RPL29. This was correlated with reactive oxygen species (ROS) levels and DNA Fragmentation Index (DFI). Semen samples were obtained from 60 cases and 30 fertile controls. Gene expression was done by qPCR analysis, and relative quantification was calculated by the 2-ΔΔCt method. Chemiluminescence and the sperm chromatin structure assay were used to measure the ROS and DFI levels respectively. FOXG1, OGG1, RPS6 and RBM9 were seen to be upregulated, while SOX3 and PARP1 were downregulated. Relative expression of SOX3, OGG1, RPS6 and RPS17 showed a significant difference between patients and controls (p < 0.05). RPL patients were seen to have high ROS (>27.8; p = 0.001) and DFI (>30.7; p < 0.0001) with respect to controls. Sperm transcript dysregulation and oxidative DNA damage can be "carried over" after implantation, thus affecting embryogenesis and health of the future progeny.
Collapse
Affiliation(s)
- Vidhu Dhawan
- Department of Anatomy, Laboratory of Molecular Reproduction & Genetics, All India Institute of Medical Sciences, New Delhi, India
| | - Manoj Kumar
- Department of Anatomy, Laboratory of Molecular Reproduction & Genetics, All India Institute of Medical Sciences, New Delhi, India
| | - Dipika Deka
- Department of Obstetrics & Gynaecology, All India Institute of Medical Sciences, New Delhi, India
| | - Neena Malhotra
- Department of Obstetrics & Gynaecology, All India Institute of Medical Sciences, New Delhi, India
| | - Neeta Singh
- Department of Obstetrics & Gynaecology, All India Institute of Medical Sciences, New Delhi, India
| | - Vatsla Dadhwal
- Department of Obstetrics & Gynaecology, All India Institute of Medical Sciences, New Delhi, India
| | - Rima Dada
- Department of Anatomy, Laboratory of Molecular Reproduction & Genetics, All India Institute of Medical Sciences, New Delhi, India
| |
Collapse
|
15
|
Águila L, Felmer R, Arias ME, Navarrete F, Martin-Hidalgo D, Lee HC, Visconti P, Fissore R. Defective sperm head decondensation undermines the success of ICSI in the bovine. Reproduction 2018; 154:307-318. [PMID: 28751536 DOI: 10.1530/rep-17-0270] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2017] [Revised: 06/20/2017] [Accepted: 06/30/2017] [Indexed: 12/25/2022]
Abstract
The efficiency of intracytoplasmic sperm injection (ICSI) in the bovine is low compared to other species. It is unknown whether defective oocyte activation and/or sperm head decondensation limit the success of this technique in this species. To elucidate where the main obstacle lies, we used homologous and heterologous ICSI and parthenogenetic activation procedures. We also evaluated whether in vitro maturation negatively impacted the early stages of activation after ICSI. Here we showed that injected bovine sperm are resistant to nuclear decondensation by bovine oocytes and this is only partly overcome by exogenous activation. Remarkably, when we used heterologous ICSI, in vivo-matured mouse eggs were capable of mounting calcium oscillations and displaying normal PN formation following injection of bovine sperm, although in vitro-matured mouse oocytes were unable to do so. Together, our data demonstrate that bovine sperm are especially resistant to nuclear decondensation by in vitro-matured oocytes and this deficiency cannot be simply overcome by exogenous activation protocols, even by inducing physiological calcium oscillations. Therefore, the inability of a suboptimal ooplasmic environment to induce sperm head decondensation limits the success of ICSI in the bovine. Studies aimed to improve the cytoplasmic milieu of in vitro-matured oocytes and to replicate the molecular changes associated with in vivo capacitation and acrosome reaction will deepen our understanding of the mechanism of fertilization and improve the success of ICSI in this species.
Collapse
Affiliation(s)
- Luis Águila
- Laboratory of Reproduction, Centre of Reproductive Biotechnology (CEBIOR-BIOREN), Universidad de La Frontera, Temuco, Chile.,Department of Agricultural Sciences and Natural Resources, Faculty of Agriculture and Forestry, Universidad de La Frontera, Temuco, Chile.,School of Veterinary Medicine, Faculty of Sciences, Universidad Mayor Sede Temuco, Temuco, Chile
| | - Ricardo Felmer
- Laboratory of Reproduction, Centre of Reproductive Biotechnology (CEBIOR-BIOREN), Universidad de La Frontera, Temuco, Chile.,Department of Agricultural Sciences and Natural Resources, Faculty of Agriculture and Forestry, Universidad de La Frontera, Temuco, Chile
| | - María Elena Arias
- Laboratory of Reproduction, Centre of Reproductive Biotechnology (CEBIOR-BIOREN), Universidad de La Frontera, Temuco, Chile.,Department of Agricultural Sciences and Natural Resources, Faculty of Agriculture and Forestry, Universidad de La Frontera, Temuco, Chile
| | - Felipe Navarrete
- Department of Veterinary and Animal Science, Integrated Sciences Building, University of Massachusetts, Amherst, Massachusetts, USA
| | - David Martin-Hidalgo
- Research Group of Intracellular Signaling and Technology of Reproduction, Research Institute INBIO G+C, University of Extremadura, Caceres, Spain.,Department of Veterinary and Animal Science, Integrated Sciences Building, University of Massachusetts, Amherst, Massachusetts, USA
| | - Hoi Chang Lee
- Department of Veterinary and Animal Science, Integrated Sciences Building, University of Massachusetts, Amherst, Massachusetts, USA
| | - Pablo Visconti
- Department of Veterinary and Animal Science, Integrated Sciences Building, University of Massachusetts, Amherst, Massachusetts, USA
| | - Rafael Fissore
- Department of Veterinary and Animal Science, Integrated Sciences Building, University of Massachusetts, Amherst, Massachusetts, USA
| |
Collapse
|
16
|
Gaspard O, Vanderzwalmen P, Wirleitner B, Ravet S, Wenders F, Eichel V, Mocková A, Spitzer D, Jouan C, Gridelet V, Martens H, Henry L, Zech H, d'Hauterive SP, Nisolle M. Impact of high magnification sperm selection on neonatal outcomes: a retrospective study. J Assist Reprod Genet 2018; 35:1113-1121. [PMID: 29607458 DOI: 10.1007/s10815-018-1167-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2017] [Accepted: 03/16/2018] [Indexed: 12/15/2022] Open
Abstract
PURPOSE The aim of this study was to compare the effect of the deselection of spermatozoa presenting vacuole-like structures using IMSI (intracytoplasmic morphologically selected sperm injection) with ICSI (intracytoplasmic sperm injection) by means of neonatal outcomes. METHODS In a retrospective two-center analysis, a total of 848 successful IMSI or ICSI cycles ending with a live birth, induced abortion, or intrauterine fetal death (IUFD) were included. RESULTS The IMSI and ICSI groups included 332 and 655 babies or fetuses, respectively. The parents were older in the IMSI group than in the ICSI group (mothers were 35.1 vs 32.9 years, and fathers were 39.1 vs 36.2 years). The multiple pregnancy rate was higher in the IMSI group. The mean pregnancy duration and mean birth weight were almost identical in both groups. There was no significant difference in major congenital malformations between the two groups. However, this rate was decreased in the IMSI group compared to that in the ICSI group (1.8 vs 3.2%), the difference being mainly found in singletons (1.4 vs 3.3%). Boys were more often affected than girls in both groups. The percentages of chromosomal abnormalities did not differ between the IMSI and ICSI groups (0.6 and 0.8%). The reported congenital malformations mainly affected the heart, urogenital, and musculoskeletal systems. CONCLUSIONS In the present study, the malformation rates observed in the IMSI and ICSI groups were not significantly different, even if slightly lower after IMSI. However, the observed difference followed the same trends observed in previous reports, indicating the possible impact of IMSI on decreasing congenital malformation occurrences. This highlights the necessity to prospectively evaluate the impact of IMSI on neonatal outcome after IVF treatment.
Collapse
Affiliation(s)
- Olivier Gaspard
- Centre de Procréation Médicalement Assistée - ULiège, Centre Hospitalier Universitaire de Liège, Liège, Belgium.
| | | | | | - Stéphanie Ravet
- Centre de Procréation Médicalement Assistée - ULiège, Centre Hospitalier Universitaire de Liège, Liège, Belgium
| | - Frédéric Wenders
- Centre de Procréation Médicalement Assistée - ULiège, Centre Hospitalier Universitaire de Liège, Liège, Belgium
| | | | - Alice Mocková
- Department of Neonatology, Faculty of Medicine in Pilsen and University Hospital, Charles University in Prague, Prague, Czech Republic
| | | | - Caroline Jouan
- Centre de Procréation Médicalement Assistée - ULiège, Centre Hospitalier Universitaire de Liège, Liège, Belgium
| | - Virginie Gridelet
- Centre de Procréation Médicalement Assistée - ULiège, Centre Hospitalier Universitaire de Liège, Liège, Belgium.,GIGA I3, Center of Immunoendocrinology, University of Liège, Liège, Belgium
| | - Henri Martens
- GIGA I3, Center of Immunoendocrinology, University of Liège, Liège, Belgium
| | - Laurie Henry
- Centre de Procréation Médicalement Assistée - ULiège, Centre Hospitalier Universitaire de Liège, Liège, Belgium
| | - Herbert Zech
- IVF-Centers Prof. Zech, Bregenz, Austria.,IVF-Centers Prof. Zech, Salzburg, Austria
| | - Sophie Perrier d'Hauterive
- Centre de Procréation Médicalement Assistée - ULiège, Centre Hospitalier Universitaire de Liège, Liège, Belgium
| | - Michelle Nisolle
- Centre de Procréation Médicalement Assistée - ULiège, Centre Hospitalier Universitaire de Liège, Liège, Belgium
| |
Collapse
|
17
|
Ioannou D, Tempest HG. Does genome organization matter in spermatozoa? A refined hypothesis to awaken the silent vessel. Syst Biol Reprod Med 2018; 64:518-534. [DOI: 10.1080/19396368.2017.1421278] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Dimitrios Ioannou
- Department of Human and Molecular Genetics, Herbert Wertheim College of Medicine, Florida International University, Miami, FL, USA
- IVF Florida Reproductive Associates, Margate, FL, USA
| | - Helen G. Tempest
- Department of Human and Molecular Genetics, Herbert Wertheim College of Medicine, Florida International University, Miami, FL, USA
- Biomolecular Sciences Institute, Florida International University, Miami, FL, USA
| |
Collapse
|
18
|
Hippocampal NR3C1 DNA methylation can mediate part of preconception paternal stress effects in rat offspring. Behav Brain Res 2017; 324:71-76. [DOI: 10.1016/j.bbr.2017.02.014] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2016] [Revised: 02/08/2017] [Accepted: 02/10/2017] [Indexed: 01/17/2023]
|
19
|
Champroux A, Torres-Carreira J, Gharagozloo P, Drevet JR, Kocer A. Mammalian sperm nuclear organization: resiliencies and vulnerabilities. Basic Clin Androl 2016; 26:17. [PMID: 28031843 PMCID: PMC5175393 DOI: 10.1186/s12610-016-0044-5] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2016] [Accepted: 11/12/2016] [Indexed: 01/07/2023] Open
Abstract
Sperm cells are remarkably complex and highly specialized compared to somatic cells. Their function is to deliver to the oocyte the paternal genomic blueprint along with a pool of proteins and RNAs so a new generation can begin. Reproductive success, including optimal embryonic development and healthy offspring, greatly depends on the integrity of the sperm chromatin structure. It is now well documented that DNA damage in sperm is linked to reproductive failures both in natural and assisted conception (Assisted Reproductive Technologies [ART]). This manuscript reviews recent important findings concerning - the unusual organization of mammalian sperm chromatin and its impact on reproductive success when modified. This review is focused on sperm chromatin damage and their impact on embryonic development and transgenerational inheritance.
Collapse
Affiliation(s)
- A. Champroux
- GReD “Genetics, Reproduction & Development” Laboratory, UMR CNRS 6293, INSERM U1103, Clermont Université, BP60026 - TSA60026, 63178 Aubière cedex, France
| | - J. Torres-Carreira
- Centro Universitário Rio Preto, UNIRP, Rodovia Br153, Km 69, CEP15093-450 São José do Rio Preto, São Paulo Brazil
| | - P. Gharagozloo
- CellOxess LLC, 830 Bear Tavern Road, Ewing, NJ 08628 USA
| | - J. R. Drevet
- GReD “Genetics, Reproduction & Development” Laboratory, UMR CNRS 6293, INSERM U1103, Clermont Université, BP60026 - TSA60026, 63178 Aubière cedex, France
| | - A. Kocer
- GReD “Genetics, Reproduction & Development” Laboratory, UMR CNRS 6293, INSERM U1103, Clermont Université, BP60026 - TSA60026, 63178 Aubière cedex, France
| |
Collapse
|
20
|
Lu F, Liu Y, Inoue A, Suzuki T, Zhao K, Zhang Y. Establishing Chromatin Regulatory Landscape during Mouse Preimplantation Development. Cell 2016; 165:1375-1388. [PMID: 27259149 DOI: 10.1016/j.cell.2016.05.050] [Citation(s) in RCA: 216] [Impact Index Per Article: 27.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2015] [Revised: 04/05/2016] [Accepted: 05/15/2016] [Indexed: 12/22/2022]
Abstract
How the chromatin regulatory landscape in the inner cell mass cells is established from differentially packaged sperm and egg genomes during preimplantation development is unknown. Here, we develop a low-input DNase I sequencing (liDNase-seq) method that allows us to generate maps of DNase I-hypersensitive site (DHS) of mouse preimplantation embryos from 1-cell to morula stage. The DHS landscape is progressively established with a drastic increase at the 8-cell stage. Paternal chromatin accessibility is quickly reprogrammed after fertilization to the level similar to maternal chromatin, while imprinted genes exhibit allelic accessibility bias. We demonstrate that transcription factor Nfya contributes to zygotic genome activation and DHS formation at the 2-cell stage and that Oct4 contributes to the DHSs gained at the 8-cell stage. Our study reveals the dynamic chromatin regulatory landscape during early development and identifies key transcription factors important for DHS establishment in mammalian embryos.
Collapse
Affiliation(s)
- Falong Lu
- Howard Hughes Medical Institute, Boston Children's Hospital, Boston, MA 02115, USA; Program in Cellular and Molecular Medicine, Boston Children's Hospital, Boston, MA 02115, USA; Division of Hematology/Oncology, Department of Pediatrics, Boston Children's Hospital, Boston, MA 02115, USA
| | - Yuting Liu
- Howard Hughes Medical Institute, Boston Children's Hospital, Boston, MA 02115, USA; Program in Cellular and Molecular Medicine, Boston Children's Hospital, Boston, MA 02115, USA; Division of Hematology/Oncology, Department of Pediatrics, Boston Children's Hospital, Boston, MA 02115, USA
| | - Azusa Inoue
- Howard Hughes Medical Institute, Boston Children's Hospital, Boston, MA 02115, USA; Program in Cellular and Molecular Medicine, Boston Children's Hospital, Boston, MA 02115, USA; Division of Hematology/Oncology, Department of Pediatrics, Boston Children's Hospital, Boston, MA 02115, USA
| | - Tsukasa Suzuki
- Howard Hughes Medical Institute, Boston Children's Hospital, Boston, MA 02115, USA; Program in Cellular and Molecular Medicine, Boston Children's Hospital, Boston, MA 02115, USA; Division of Hematology/Oncology, Department of Pediatrics, Boston Children's Hospital, Boston, MA 02115, USA
| | - Keji Zhao
- Systems Biology Center, Division of Intramural Research, National Heart, Lung and Blood Institute, NIH, Bethesda, MD 20892, USA
| | - Yi Zhang
- Howard Hughes Medical Institute, Boston Children's Hospital, Boston, MA 02115, USA; Program in Cellular and Molecular Medicine, Boston Children's Hospital, Boston, MA 02115, USA; Division of Hematology/Oncology, Department of Pediatrics, Boston Children's Hospital, Boston, MA 02115, USA; Department of Genetics, Harvard Medical School, Boston, MA 02115, USA; Harvard Stem Cell Institute, WAB-149G, 200 Longwood Avenue, Boston, MA 02115, USA.
| |
Collapse
|
21
|
Youngson NA, Lecomte V, Maloney CA, Leung P, Liu J, Hesson LB, Luciani F, Krause L, Morris MJ. Obesity-induced sperm DNA methylation changes at satellite repeats are reprogrammed in rat offspring. Asian J Androl 2016; 18:930-936. [PMID: 26608942 PMCID: PMC5109891 DOI: 10.4103/1008-682x.163190] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2015] [Revised: 05/21/2015] [Accepted: 07/15/2015] [Indexed: 12/29/2022] Open
Abstract
There is now strong evidence that the paternal contribution to offspring phenotype at fertilisation is more than just DNA. However, the identity and mechanisms of this nongenetic inheritance are poorly understood. One of the more important questions in this research area is: do changes in sperm DNA methylation have phenotypic consequences for offspring? We have previously reported that offspring of obese male rats have altered glucose metabolism compared with controls and that this effect was inherited through nongenetic means. Here, we describe investigations into sperm DNA methylation in a new cohort using the same protocol. Male rats on a high-fat diet were 30% heavier than control-fed males at the time of mating (16-19 weeks old, n = 14/14). A small (0.25%) increase in total 5-methyl-2Ͳ-deoxycytidine was detected in obese rat spermatozoa by liquid chromatography tandem mass spectrometry. Examination of the repetitive fraction of the genome with methyl-CpG binding domain protein-enriched genome sequencing (MBD-Seq) and pyrosequencing revealed that retrotransposon DNA methylation states in spermatozoa were not affected by obesity, but methylation at satellite repeats throughout the genome was increased. However, examination of muscle, liver, and spermatozoa from male 27-week-old offspring from obese and control fathers (both groups from n = 8 fathers) revealed that normal DNA methylation levels were restored during offspring development. Furthermore, no changes were found in three genomic imprints in obese rat spermatozoa. Our findings have implications for transgenerational epigenetic reprogramming. They suggest that postfertilization mechanisms exist for normalising some environmentally-induced DNA methylation changes in sperm cells.
Collapse
Affiliation(s)
- Neil A Youngson
- Department of Pharmacology, School of Medical Sciences, UNSW Australia, Sydney, NSW 2052, Australia
| | - Virginie Lecomte
- Department of Pharmacology, School of Medical Sciences, UNSW Australia, Sydney, NSW 2052, Australia
| | - Christopher A Maloney
- Department of Pharmacology, School of Medical Sciences, UNSW Australia, Sydney, NSW 2052, Australia
| | - Preston Leung
- Inflammation and Infection Research, School of Medical Sciences, UNSW Australia, Sydney, NSW 2052, Australia
| | - Jia Liu
- Adult Cancer Program, Lowy Cancer Research Centre and Prince of Wales Clinical School, UNSW Australia, Sydney, NSW 2052, Australia
| | - Luke B Hesson
- Adult Cancer Program, Lowy Cancer Research Centre and Prince of Wales Clinical School, UNSW Australia, Sydney, NSW 2052, Australia
| | - Fabio Luciani
- Inflammation and Infection Research, School of Medical Sciences, UNSW Australia, Sydney, NSW 2052, Australia
| | - Lutz Krause
- QIMR Berghofer Medical Research Institute, Herston, Brisbane, Queensland 4006, Australia
- University of Queensland Diamantina Institute, Translational Research Institute, University of Queensland, 37 Kent Street Woolloongabba, Queensland 4102, Australia
| | - Margaret J Morris
- Department of Pharmacology, School of Medical Sciences, UNSW Australia, Sydney, NSW 2052, Australia
| |
Collapse
|
22
|
Fraser R, Lin CJ. Epigenetic reprogramming of the zygote in mice and men: on your marks, get set, go! Reproduction 2016; 152:R211-R222. [PMID: 27601712 PMCID: PMC5097126 DOI: 10.1530/rep-16-0376] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2016] [Accepted: 09/02/2016] [Indexed: 12/19/2022]
Abstract
Gametogenesis (spermatogenesis and oogenesis) is accompanied by the acquisition of gender-specific epigenetic marks, such as DNA methylation, histone modifications and regulation by small RNAs, to form highly differentiated, but transcriptionally silent cell-types in preparation for fertilisation. Upon fertilisation, extensive global epigenetic reprogramming takes place to remove the previously acquired epigenetic marks and produce totipotent zygotic states. It is the aim of this review to delineate the cellular and molecular events involved in maternal, paternal and zygotic epigenetic reprogramming from the time of gametogenesis, through fertilisation, to the initiation of zygotic genome activation for preimplantation embryonic development. Recent studies have begun to uncover the indispensable functions of epigenetic players during gametogenesis, fertilisation and preimplantation embryo development, and a more comprehensive understanding of these early events will be informative for increasing pregnancy success rates, adding particular value to assisted fertility programmes.
Collapse
Affiliation(s)
- Rupsha Fraser
- The University of EdinburghMRC Centre for Reproductive Health, Queen's Medical Research Institute, 47 Little France Crescent, Edinburgh, EH16 4TJ, Scotland, UK
| | - Chih-Jen Lin
- The University of EdinburghMRC Centre for Reproductive Health, Queen's Medical Research Institute, 47 Little France Crescent, Edinburgh, EH16 4TJ, Scotland, UK
| |
Collapse
|
23
|
Suttirojpattana T, Somfai T, Matoba S, Nagai T, Parnpai R, Geshi M. Pretreatment of bovine sperm with dithiobutylamine (DTBA) significantly improves embryo development after ICSI. J Reprod Dev 2016; 62:577-585. [PMID: 27523189 PMCID: PMC5177975 DOI: 10.1262/jrd.2016-084] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
We assessed the effect of pretreating sperm with dithiobutylamine (DTBA) to improve embryo development by intracytoplasmic sperm injection (ICSI) in cows.
Acridine Orange staining revealed that when applied at different concentrations (2.5, 5, and 10 mM) and exposure times (5 min, 20 min, 1 h, and 2 h), DTBA
reduced disulfide bonds in spermatozoa with the highest efficacy at 5 mM for 5 min. DTBA enhanced the percentage of spermatozoa with free protamine thiol groups
compared with untreated spermatozoa (control) (P < 0.05); however, this result did not differ from that of dithiothreitol (DTT) treatment. The percentage of
live spermatozoa after DTBA treatment was identical to that in the control, but significantly higher than that after DTT treatment (P < 0.05). After ICSI,
DTBA treatment tended to improve male pronuclear formation rate (P = 0.071) compared with non-treated sperm injection. Blastocyst formation rate was
significantly improved by DTBA treatment compared with that in DTT, control, and sham injection groups (P < 0.05). Blastocyst quality in terms of cell
numbers and ploidy was not different among these groups. In conclusion, DTBA increases the efficacy of blastocyst production by ICSI even if DTT treatment does
not work.
Collapse
Affiliation(s)
- Tayita Suttirojpattana
- Embryo Technology and Stem Cell Research Center, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand
| | | | | | | | | | | |
Collapse
|
24
|
Krejčí J, Stixová L, Pagáčová E, Legartová S, Kozubek S, Lochmanová G, Zdráhal Z, Sehnalová P, Dabravolski S, Hejátko J, Bártová E. Post-Translational Modifications of Histones in Human Sperm. J Cell Biochem 2016; 116:2195-209. [PMID: 25808548 DOI: 10.1002/jcb.25170] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2014] [Accepted: 03/19/2015] [Indexed: 01/22/2023]
Abstract
We examined the levels and distribution of post-translationally modified histones and protamines in human sperm. Using western blot immunoassay, immunofluorescence, mass spectrometry (MS), and FLIM-FRET approaches, we analyzed the status of histone modifications and the protamine P2. Among individual samples, we observed variability in the levels of H3K9me1, H3K9me2, H3K27me3, H3K36me3, and H3K79me1, but the level of acetylated (ac) histones H4 was relatively stable in the sperm head fractions, as demonstrated by western blot analysis. Sperm heads with lower levels of P2 exhibited lower levels of H3K9ac, H3K9me1, H3K27me3, H3K36me3, and H3K79me1. A very strong correlation was observed between the levels of P2 and H3K9me2. FLIM-FRET analysis additionally revealed that acetylated histones H4 are not only parts of sperm chromatin but also appear in a non-integrated form. Intriguingly, H4ac and H3K27me3 were detected in sperm tail fractions via western blot analysis. An appearance of specific histone H3 and H4 acetylation and H3 methylation in sperm tail fractions was also confirmed by both LC-MS/MS and MALDI-TOF MS analysis. Taken together, these data indicate that particular post-translational modifications of histones are uniquely distributed in human sperm, and this distribution varies among individuals and among the sperm of a single individual.
Collapse
Affiliation(s)
- Jana Krejčí
- Department of Molecular Cytology and Cytometry, Institute of Biophysics, Academy of Sciences of the Czech Republic, v.v.i., Královopolská 135, Brno, 612 65, Czech Republic
| | - Lenka Stixová
- Department of Molecular Cytology and Cytometry, Institute of Biophysics, Academy of Sciences of the Czech Republic, v.v.i., Královopolská 135, Brno, 612 65, Czech Republic
| | - Eva Pagáčová
- Department of Molecular Cytology and Cytometry, Institute of Biophysics, Academy of Sciences of the Czech Republic, v.v.i., Královopolská 135, Brno, 612 65, Czech Republic
| | - Soňa Legartová
- Department of Molecular Cytology and Cytometry, Institute of Biophysics, Academy of Sciences of the Czech Republic, v.v.i., Královopolská 135, Brno, 612 65, Czech Republic
| | - Stanislav Kozubek
- Department of Molecular Cytology and Cytometry, Institute of Biophysics, Academy of Sciences of the Czech Republic, v.v.i., Královopolská 135, Brno, 612 65, Czech Republic
| | - Gabriela Lochmanová
- Research Group-Proteomics, Central European Institute of Technology, Masaryk University, Kamenice 753/5, Brno, Czech Republic
| | - Zbyněk Zdráhal
- Research Group-Proteomics, Central European Institute of Technology, Masaryk University, Kamenice 753/5, Brno, Czech Republic.,National Centre for Biomolecular Research, Faculty of Science, Masaryk University, Kamenice 753/5, Brno, Czech Republic
| | - Petra Sehnalová
- Department of Molecular Cytology and Cytometry, Institute of Biophysics, Academy of Sciences of the Czech Republic, v.v.i., Královopolská 135, Brno, 612 65, Czech Republic
| | - Siarhei Dabravolski
- Functional Genomics and Proteomics of Plants, Central European Institute of Technology (CEITEC), Masaryk University, Kamenice 753/5, Brno, Czech Republic
| | - Jan Hejátko
- Functional Genomics and Proteomics of Plants, Central European Institute of Technology (CEITEC), Masaryk University, Kamenice 753/5, Brno, Czech Republic
| | - Eva Bártová
- Department of Molecular Cytology and Cytometry, Institute of Biophysics, Academy of Sciences of the Czech Republic, v.v.i., Královopolská 135, Brno, 612 65, Czech Republic
| |
Collapse
|
25
|
Castillo J, Estanyol JM, Ballescá JL, Oliva R. Human sperm chromatin epigenetic potential: genomics, proteomics, and male infertility. Asian J Androl 2016; 17:601-9. [PMID: 25926607 PMCID: PMC4492051 DOI: 10.4103/1008-682x.153302] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
The classical idea about the function of the mammalian sperm chromatin is that it serves to transmit a highly protected and transcriptionally inactive paternal genome, largely condensed by protamines, to the next generation. In addition, recent sperm chromatin genome-wide dissection studies indicate the presence of a differential distribution of the genes and repetitive sequences in the protamine-condensed and histone-condensed sperm chromatin domains, which could be potentially involved in regulatory roles after fertilization. Interestingly, recent proteomic studies have shown that sperm chromatin contains many additional proteins, in addition to the abundant histones and protamines, with specific modifications and chromatin affinity features which are also delivered to the oocyte. Both gene and protein signatures seem to be altered in infertile patients and, as such, are consistent with the potential involvement of the sperm chromatin landscape in early embryo development. This present work reviews the available information on the composition of the human sperm chromatin and its epigenetic potential, with a particular focus on recent results derived from high-throughput genomic and proteomic studies. As a complement, we provide experimental evidence for the detection of phosphorylations and acetylations in human protamine 1 using a mass spectrometry approach. The available data indicate that the sperm chromatin is much more complex than what it was previously thought, raising the possibility that it could also serve to transmit crucial paternal epigenetic information to the embryo.
Collapse
Affiliation(s)
| | | | | | - Rafael Oliva
- Human Genetics Research Group, IDIBAPS, Faculty of Medicine, University of Barcelona, Casanova 143; Biochemistry and Molecular Genetics Service, Biomedical Diagnostic Centre, Hospital Clinic, Villarroel 170, 08036 Barcelona, Spain
| |
Collapse
|
26
|
The "omics" of human male infertility: integrating big data in a systems biology approach. Cell Tissue Res 2015; 363:295-312. [PMID: 26661835 DOI: 10.1007/s00441-015-2320-7] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2015] [Accepted: 10/26/2015] [Indexed: 12/11/2022]
Abstract
Spermatogenesis is a complex process in which >2300 genes are temporally and spatially regulated to form a terminally differentiated sperm cell that must maintain the ability to contribute to a totipotent embryo which can successfully differentiate into a healthy individual. This process is dependent on fidelity of the genome, epigenome, transcriptome, and proteome of the spermatogonia, supporting cells, and the resulting sperm cell. Infertility and/or disease risk may increase in the offspring if abnormalities are present. This review highlights the recent advances in our understanding of these processes in light of the "omics revolution". We briefly review each of these areas, as well as highlight areas of future study and needs to advance further.
Collapse
|
27
|
Baroux C, Grossniklaus U. The Maternal-to-Zygotic Transition in Flowering Plants: Evidence, Mechanisms, and Plasticity. Curr Top Dev Biol 2015; 113:351-71. [PMID: 26358878 DOI: 10.1016/bs.ctdb.2015.06.005] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2022]
Abstract
The maternal-to-zygotic transition (MZT) defines a developmental phase during which the embryo progressively emancipates itself from a developmental control relying largely on maternal information. The MZT is a functional readout of two processes: the clearance of maternally derived information and the de novo expression of the inherited, parental alleles enabled by zygotic genome activation (ZGA). In plants, for many years the debate about whether the MZT exists at all focused on the ZGA alone. However, several recent studies provide evidence for a progressive alleviation of the maternal control over embryogenesis that is correlated with a gradual ZGA, a process that is itself maternally controlled. Yet, several examples of zygotic genes that are expressed and/or functionally required early in embryogenesis demonstrate a certain flexibility in the dynamics and kinetics of the MZT among plant species and also intraspecific hybrids.
Collapse
Affiliation(s)
- Célia Baroux
- Institute of Plant Biology & Zurich-Basel Plant Science Center, University of Zurich, Zurich, Switzerland
| | - Ueli Grossniklaus
- Institute of Plant Biology & Zurich-Basel Plant Science Center, University of Zurich, Zurich, Switzerland.
| |
Collapse
|
28
|
Abstract
Mammalian viviparity (intrauterine development of the fetus) introduced a new dimension to brain development, with the fetal hypothalamus and fetal placenta developing at a time when the fetal placenta engages hypothalamic structures of the maternal generation. Such transgenerational interactions provide a basis for ensuring optimal maternalism in the next generation. This success has depended on genomic imprinting and a biased role of the matriline. Maternal methylation imprints determine parent of origin expression of genes fundamental to both placental and hypothalamic development. The matriline takes a further leading role for transgenerational reprogramming of these imprints. Developmental errors are minimized by the tight control that imprinted genes have on regulation of downstream evolutionary expanded gene families important for placental and hypothalamic development. Imprinted genes themselves have undergone purifying selection, providing a framework of stability for in utero development with most growth variance occurring postnatally. Mothers, not fathers, take the lead in the endocrinological and behavior adaptations that nurture, feed, and protect the infant. In utero coadaptive development of the placenta and hypothalamus has thus required a concomitant development to ensure male masculinization. Only placental male mammals evolved the sex determining SRY, which activates Sox9 for testes formation. SRY is a hybrid gene of Dgcr8 expressed in the developing placenta and Sox3 expressed in hypothalamic development. This hybridization of genes that take their origin from the placenta and hypothalamus has enabled critical in utero timing for the development of fetal Leydig cells, and hence testosterone production for hypothalamic masculinization.
Collapse
Affiliation(s)
- Eric B Keverne
- Sub-Department of Animal Behaviour, University of Cambridge, Cambridge CB23 8AA, United Kingdom
| |
Collapse
|
29
|
Yuan S, Tang C, Zhang Y, Wu J, Bao J, Zheng H, Xu C, Yan W. mir-34b/c and mir-449a/b/c are required for spermatogenesis, but not for the first cleavage division in mice. Biol Open 2015; 4:212-23. [PMID: 25617420 PMCID: PMC4365490 DOI: 10.1242/bio.201410959] [Citation(s) in RCA: 112] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Mammalian sperm are carriers of not only the paternal genome, but also the paternal epigenome in the forms of DNA methylation, retained histones and noncoding RNAs. Although paternal DNA methylation and histone retention sites have been correlated with protein-coding genes that are critical for preimplantation embryonic development, physiological evidence of an essential role of these epigenetic marks in fertilization and early development remains lacking. Two miRNA clusters consisting of five miRNAs (miR-34b/c and miR-449a/b/c) are present in sperm, but absent in oocytes, and miR-34c has been reported to be essential for the first cleavage division in vitro. Here, we show that both miR-34b/c- and miR-449-null male mice displayed normal fertility, and that intracytoplasmic injection of either miR-34b/c- or miR-449-null sperm led to normal fertilization, normal preimplantation development and normal birth rate. However, miR-34b/c and miR-449 double knockout (miR-dKO) males were infertile due to severe spermatogenic disruptions and oligo-astheno-teratozoospermia. Injection of miR-dKO sperm into wild-type oocytes led to a block at the two-pronucleus to zygote transition, whereas normal preimplantation development and healthy pups were obtained through injection of miR-dKO round spermatids. Our data demonstrate that miR-34b/c and miR-449a/b/c are essential for normal spermatogenesis and male fertility, but their presence in sperm is dispensable for fertilization and preimplantation development.
Collapse
Affiliation(s)
- Shuiqiao Yuan
- Department of Physiology and Cell Biology, University of Nevada School of Medicine, Reno, NV 89557, USA
| | - Chong Tang
- Department of Physiology and Cell Biology, University of Nevada School of Medicine, Reno, NV 89557, USA
| | - Ying Zhang
- Department of Physiology and Cell Biology, University of Nevada School of Medicine, Reno, NV 89557, USA
| | - Jingwen Wu
- Department of Physiology and Cell Biology, University of Nevada School of Medicine, Reno, NV 89557, USA Department of Histology and Embryology, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China Shanghai Key Laboratory of Reproductive Medicine, Shanghai 200025, China
| | - Jianqiang Bao
- Department of Physiology and Cell Biology, University of Nevada School of Medicine, Reno, NV 89557, USA
| | - Huili Zheng
- Department of Physiology and Cell Biology, University of Nevada School of Medicine, Reno, NV 89557, USA
| | - Chen Xu
- Department of Histology and Embryology, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China Shanghai Key Laboratory of Reproductive Medicine, Shanghai 200025, China
| | - Wei Yan
- Department of Physiology and Cell Biology, University of Nevada School of Medicine, Reno, NV 89557, USA
| |
Collapse
|
30
|
Wang WL, Anderson LC, Nicklay JJ, Chen H, Gamble MJ, Shabanowitz J, Hunt DF, Shechter D. Phosphorylation and arginine methylation mark histone H2A prior to deposition during Xenopus laevis development. Epigenetics Chromatin 2014; 7:22. [PMID: 25302076 PMCID: PMC4191874 DOI: 10.1186/1756-8935-7-22] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2014] [Accepted: 08/14/2014] [Indexed: 01/21/2023] Open
Abstract
Background Stored, soluble histones in eggs are essential for early development, in particular during the maternally controlled early cell cycles in the absence of transcription. Histone post-translational modifications (PTMs) direct and regulate chromatin-templated transactions, so understanding the nature and function of pre-deposition maternal histones is essential to deciphering mechanisms of regulation of development, chromatin assembly, and transcription. Little is known about histone H2A pre-deposition modifications nor known about the transitions that occur upon the onset of zygotic control of the cell cycle and transcription at the mid-blastula transition (MBT). Results We isolated histones from staged Xenopus laevis oocytes, eggs, embryos, and assembled pronuclei to identify changes in histone H2A modifications prior to deposition and in chromatin. Soluble and chromatin-bound histones from eggs and embryos demonstrated distinct patterns of maternal and zygotic H2A PTMs, with significant pre-deposition quantities of S1ph and R3me1, and R3me2s. We observed the first functional distinction between H2A and H4 S1 phosphorylation, as we showed that H2A and H2A.X-F (also known as H2A.X.3) serine 1 (S1) is phosphorylated concomitant with germinal vesicle breakdown (GVBD) while H4 serine 1 phosphorylation occurs post-MBT. In egg extract H2A/H4 S1 phosphorylation is independent of the cell cycle, chromatin assembly, and DNA replication. H2AS1ph is highly enriched on blastula chromatin during repression of zygotic gene expression while H4S1ph is correlated with the beginning of maternal gene expression and the lengthening of the cell cycle, consistent with distinct biological roles for H2A and H4 S1 phosphorylation. We isolated soluble H2A and H2A.X-F from the egg and chromatin-bound in pronuclei and analyzed them by mass spectrometry analysis to quantitatively determine abundances of S1ph and R3 methylation. We show that H2A and H4 S1ph, R3me1 and R3me2s are enriched on nucleosomes containing both active and repressive histone PTMs in human A549 cells and Xenopus embryos. Conclusions Significantly, we demonstrated that H2A phosphorylation and H4 arginine methylation form a new class of bona fide pre-deposition modifications in the vertebrate embryo. We show that S1ph and R3me containing chromatin domains are not correlated with H3 regulatory PTMs, suggesting a unique role for phosphorylation and arginine methylation.
Collapse
Affiliation(s)
- Wei-Lin Wang
- Department of Biochemistry, Albert Einstein College of Medicine of Yeshiva University, Bronx, NY 10461, USA
| | - Lissa C Anderson
- Department of Chemistry, Health Sciences Center, University of Virginia, Charlottesville, VA 22904, USA
| | - Joshua J Nicklay
- Department of Chemistry, Health Sciences Center, University of Virginia, Charlottesville, VA 22904, USA
| | - Hongshan Chen
- Department of Molecular Pharmacology, Albert Einstein College of Medicine of Yeshiva University, Bronx, NY 10461, USA
| | - Matthew J Gamble
- Department of Molecular Pharmacology, Albert Einstein College of Medicine of Yeshiva University, Bronx, NY 10461, USA
| | - Jeffrey Shabanowitz
- Department of Chemistry, Health Sciences Center, University of Virginia, Charlottesville, VA 22904, USA
| | - Donald F Hunt
- Department of Chemistry, Health Sciences Center, University of Virginia, Charlottesville, VA 22904, USA ; Department of Pathology, Health Sciences Center, University of Virginia, Charlottesville, VA 22904, USA
| | - David Shechter
- Department of Biochemistry, Albert Einstein College of Medicine of Yeshiva University, Bronx, NY 10461, USA
| |
Collapse
|
31
|
Castillo J, Amaral A, Azpiazu R, Vavouri T, Estanyol JM, Ballesca JL, Oliva R. Genomic and proteomic dissection and characterization of the human sperm chromatin. Mol Hum Reprod 2014; 20:1041-53. [DOI: 10.1093/molehr/gau079] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
|
32
|
Inoue A, Zhang Y. Nucleosome assembly is required for nuclear pore complex assembly in mouse zygotes. Nat Struct Mol Biol 2014; 21:609-16. [PMID: 24908396 DOI: 10.1038/nsmb.2839] [Citation(s) in RCA: 116] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2014] [Accepted: 05/08/2014] [Indexed: 12/15/2022]
Abstract
Packaging of DNA into nucleosomes not only helps to store genetic information but also creates diverse means for regulating DNA-templated processes. Attempts to reveal additional functions of the nucleosome have been unsuccessful, owing to cell lethality caused by nucleosome deletion. Taking advantage of the mammalian fertilization process, in which sperm DNA assembles into nucleosomes de novo, we generated nucleosome-depleted (ND) paternal pronuclei by depleting maternal histone H3.3 or its chaperone HIRA in mouse zygotes. We found that the ND pronucleus forms a nuclear envelope devoid of nuclear pore complexes (NPCs). Loss of NPCs is accompanied by defective localization of ELYS, a nucleoporin essential for NPC assembly, to the nuclear rim. Interestingly, tethering ELYS to the nuclear rim of the ND nucleus rescues NPC assembly. Our study thus demonstrates that nucleosome assembly is a prerequisite for NPC assembly during paternal pronuclear formation.
Collapse
Affiliation(s)
- Azusa Inoue
- 1] Howard Hughes Medical Institute, Boston, Massachusetts, USA. [2] Program in Cellular and Molecular Medicine, Boston Children's Hospital, Harvard Medical School, Boston, Massachusetts, USA. [3] Division of Hematology/Oncology, Department of Pediatrics, Boston Children's Hospital, Boston, Massachusetts, USA. [4] Department of Genetics, Harvard Medical School, Boston, Massachusetts, USA
| | - Yi Zhang
- 1] Howard Hughes Medical Institute, Boston, Massachusetts, USA. [2] Program in Cellular and Molecular Medicine, Boston Children's Hospital, Harvard Medical School, Boston, Massachusetts, USA. [3] Division of Hematology/Oncology, Department of Pediatrics, Boston Children's Hospital, Boston, Massachusetts, USA. [4] Department of Genetics, Harvard Medical School, Boston, Massachusetts, USA. [5] Harvard Stem Cell Institute, Boston, Massachusetts, USA
| |
Collapse
|
33
|
Noblanc A, Kocer A, Drevet JR. Recent knowledge concerning mammalian sperm chromatin organization and its potential weaknesses when facing oxidative challenge. Basic Clin Androl 2014; 24:6. [PMID: 26779341 PMCID: PMC4715350 DOI: 10.1186/2051-4190-24-6] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2014] [Accepted: 02/26/2014] [Indexed: 01/08/2023] Open
Abstract
Spermatozoa are the smallest and most cyto-differentiated mammalian cells. From a somatic cell-like appearance at the beginning of spermatogenesis, the male germ cell goes through a highly sophisticated process to reach its final organization entirely devoted to its mission which is to deliver the paternal genome to the oocyte. In order to fit the paternal DNA into the tiny spermatozoa head, complete chromatin remodeling is necessary. This review essentially focuses on present knowledge of this mammalian sperm nucleus compaction program. Particular attention is given to most recent advances that concern the specific organization of mammalian sperm chromatin and its potential weaknesses. Emphasis is placed on sperm DNA oxidative damage that may have dramatic consequences including infertility, abnormal embryonic development and the risk of transmission to descendants of an altered paternal genome.
Collapse
Affiliation(s)
- Anais Noblanc
- GReD Laboratory, CNRS UMR 6293 - INSERM U1103 - Clermont Université, Aubière, France
| | - Ayhan Kocer
- GReD Laboratory, CNRS UMR 6293 - INSERM U1103 - Clermont Université, Aubière, France
| | - Joël R Drevet
- GReD Laboratory, CNRS UMR 6293 - INSERM U1103 - Clermont Université, Aubière, France
| |
Collapse
|
34
|
Brunner AM, Nanni P, Mansuy IM. Epigenetic marking of sperm by post-translational modification of histones and protamines. Epigenetics Chromatin 2014; 7:2. [PMID: 24443974 PMCID: PMC3904194 DOI: 10.1186/1756-8935-7-2] [Citation(s) in RCA: 112] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2013] [Accepted: 12/20/2013] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND The concept that individual traits can be acquired and transmitted by the germline through epigenetic mechanisms has gained recognition in the past years. However, epigenetic marks in sperm have not been are not well identified. RESULTS Using a novel proteomic approach that combines peptide-based bottom-up and intact protein top-down tandem mass spectrometry, we report the identification of epigenetic marks on histones and protamines in adult mouse sperm. We identified a total of 26 post-translational modifications (PTMs) on specific residues of the core histones H2B, H3 and H4, and the linker histone H1, four of which had not been described previously in any tissue or cell line. We also detected 11 novel PTMs on the protamines PRM1 and PRM2 and observed that they are present in specific combinations on individual protamines. CONCLUSIONS Both histones and protamines carry multiple PTMs in the adult mouse sperm. On protamines, specific PTM combinations might form a 'protamine code' similar to the 'histone code'. These findings suggest a potential role for PTMs on sperm histones and protamines in epigenetic signatures underlying transgenerational inheritance.
Collapse
Affiliation(s)
- Andrea M Brunner
- Department of Health Science and Technology of ETH Zürich, Neuroscience Centre Zürich, Brain Research Institute, Medical Faculty of the University of Zürich, Winterthurerstrasse 190, Zürich CH-8057, Switzerland
- Biomolecular Mass Spectrometry and Proteomics, Utrecht University, Padualaan 8, 3584 CH, Utrecht, The Netherlands
| | - Paolo Nanni
- Functional Genomics Centre Zürich, University of Zürich and ETH Zürich, Winterthurerstrasse 190, Zürich CH-8057, Switzerland
| | - Isabelle M Mansuy
- Department of Health Science and Technology of ETH Zürich, Neuroscience Centre Zürich, Brain Research Institute, Medical Faculty of the University of Zürich, Winterthurerstrasse 190, Zürich CH-8057, Switzerland
| |
Collapse
|
35
|
TET enzymes, TDG and the dynamics of DNA demethylation. Nature 2013; 502:472-9. [PMID: 24153300 DOI: 10.1038/nature12750] [Citation(s) in RCA: 1086] [Impact Index Per Article: 98.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2013] [Accepted: 08/06/2013] [Indexed: 01/17/2023]
Abstract
DNA methylation has a profound impact on genome stability, transcription and development. Although enzymes that catalyse DNA methylation have been well characterized, those that are involved in methyl group removal have remained elusive, until recently. The transformative discovery that ten-eleven translocation (TET) family enzymes can oxidize 5-methylcytosine has greatly advanced our understanding of DNA demethylation. 5-Hydroxymethylcytosine is a key nexus in demethylation that can either be passively depleted through DNA replication or actively reverted to cytosine through iterative oxidation and thymine DNA glycosylase (TDG)-mediated base excision repair. Methylation, oxidation and repair now offer a model for a complete cycle of dynamic cytosine modification, with mounting evidence for its significance in the biological processes known to involve active demethylation.
Collapse
|
36
|
Boissonnas CC, Jouannet P, Jammes H. Epigenetic disorders and male subfertility. Fertil Steril 2013; 99:624-31. [DOI: 10.1016/j.fertnstert.2013.01.124] [Citation(s) in RCA: 88] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2012] [Revised: 01/18/2013] [Accepted: 01/21/2013] [Indexed: 11/24/2022]
|