1
|
Roza M, Eriksson ANM, Svanholm S, Berg C, Karlsson O. Pesticide-induced transgenerational alterations of genome-wide DNA methylation patterns in the pancreas of Xenopus tropicalis correlate with metabolic phenotypes. JOURNAL OF HAZARDOUS MATERIALS 2024; 478:135455. [PMID: 39154485 DOI: 10.1016/j.jhazmat.2024.135455] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2024] [Revised: 07/23/2024] [Accepted: 08/06/2024] [Indexed: 08/20/2024]
Abstract
The unsustainable use of manmade chemicals poses significant threats to biodiversity and human health. Emerging evidence highlights the potential of certain chemicals to cause transgenerational impacts on metabolic health. Here, we investigate male transmitted epigenetic transgenerational effects of the anti-androgenic herbicide linuron in the pancreas of Xenopus tropicalis frogs, and their association with metabolic phenotypes. Reduced representation bisulfite sequencing (RRBS) was used to assess genome-wide DNA methylation patterns in the pancreas of adult male F2 generation ancestrally exposed to environmentally relevant linuron levels (44 ± 4.7 μg/L). We identified 1117 differentially methylated regions (DMRs) distributed across the X. tropicalis genome, revealing potential regulatory mechanisms underlying metabolic disturbances. DMRs were identified in genes crucial for pancreatic function, including calcium signalling (clstn2, cacna1d and cadps2), genes associated with type 2 diabetes (tcf7l2 and adcy5) and a biomarker for pancreatic ductal adenocarcinoma (plec). Correlation analysis revealed associations between DNA methylation levels in these genes and metabolic phenotypes, indicating epigenetic regulation of glucose metabolism. Moreover, differential methylation in genes related to histone modifications suggests alterations in the epigenetic machinery. These findings underscore the long-term consequences of environmental contamination on pancreatic function and raise concerns about the health risks associated with transgenerational effects of pesticides.
Collapse
Affiliation(s)
- Mauricio Roza
- Science for Life Laboratory, Department of Environmental Science, Stockholm University, Stockholm, Sweden
| | | | - Sofie Svanholm
- Department of Environmental Toxicology, Uppsala University, Uppsala, Sweden
| | - Cecilia Berg
- Department of Environmental Toxicology, Uppsala University, Uppsala, Sweden
| | - Oskar Karlsson
- Science for Life Laboratory, Department of Environmental Science, Stockholm University, Stockholm, Sweden.
| |
Collapse
|
2
|
Guo W, Li X, Qin K, Zhang P, He J, Liu Y, Yang X, Wu S. Nanopore sequencing demonstrates the roles of spermatozoal DNA N6-methyladenine in mediating transgenerational lipid metabolism disorder induced by excessive folate consumpton. Poult Sci 2024; 103:103953. [PMID: 38945000 PMCID: PMC11267017 DOI: 10.1016/j.psj.2024.103953] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2024] [Revised: 05/31/2024] [Accepted: 06/03/2024] [Indexed: 07/02/2024] Open
Abstract
Increased consumption of folic acid is prevalent due to its beneficial effects, but growing evidence emphasizes the side effects pointing to excessive dietary folate intake. The effects of excessive paternal folic acid consumption on offspring and its transgenerational inheritance mechanism have not been elucidated. We hypothesize that excessive folic acid consumption will alter sperm DNA N6-methyladenine (6mA) and 5-methylcytosine (5mC) methylation and heritably influence offspring metabolic homeostasis. Here, we fed roosters either folic acid-control or folic acid-excess diet throughout life. Paternal chronic folic acid excessive supplementation increased hepatic lipogenesis and lipid accumulation but reduced lipolysis both in the roosters and their offspring, which was further confirmed to be induced by one-carbon metabolism inhibition and gene expression alteration associated with the Peroxisome proliferator-activated receptor pathway. Based on the spermatozoal genome-wide DNA methylome identified by Nanopore sequencing, multi-omics association analysis of spermatozoal and hepatic DNA methylome, transcriptome, and metabolome suggested that differential spermatozoal DNA 6mA and 5mC methylation could be involved in regulating lipid metabolism-related gene expression in offspring chickens. This model suggests that sperm DNA N6-methyladenine and 5-methylcytosine methylation were involved in epigenetic transmission and that paternal dietary excess folic acid leads to hepatic lipid accumulation in offspring.
Collapse
Affiliation(s)
- Wei Guo
- Jiangsu Institute of Poultry Science, Yangzhou, Jiangsu Province, 225125, China; College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Xinyi Li
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, 712100, China; Department of Medicine, Karolinska Institutet, Solna, Stockholm, 17165, Sweden
| | - Kailong Qin
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Peilin Zhang
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Jinhui He
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Yanli Liu
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Xiaojun Yang
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Shengru Wu
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, 712100, China; Department of Microbiology, Tumor and Cell Biology, Karolinska Institutet, Stockholm, 17165, Sweden.
| |
Collapse
|
3
|
Matlosz S, Franzdóttir SR, Pálsson A, Jónsson ZO. DNA methylation reprogramming in teleosts. Evol Dev 2024; 26:e12486. [PMID: 38783650 DOI: 10.1111/ede.12486] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2023] [Revised: 04/29/2024] [Accepted: 05/14/2024] [Indexed: 05/25/2024]
Abstract
Early embryonic development is crucially important but also remarkably diverse among animal taxa. Axis formation and cell lineage specification occur due to both spatial and temporal control of gene expression. This complex system involves various signaling pathways and developmental genes such as transcription factors as well as other molecular interactants that maintain cellular states, including several types of epigenetic marks. 5mC DNA methylation, the chemical modification of cytosines in eukaryotes, represents one such mark. By influencing the compaction of chromatin (a high-order DNA structure), DNA methylation can either repress or induce transcriptional activity. Mammals exhibit a reprogramming of DNA methylation from the parental genomes in the zygote following fertilization, and later in primordial germ cells (PGCs). Whether these periods of methylation reprogramming are evolutionarily conserved, or an innovation in mammals, is an emerging question. Looking into these processes in other vertebrate lineages is thus important, and teleost fish, with their extensive species richness, phenotypic diversity, and multiple rounds of whole genome duplication, provide the perfect research playground for answering such a question. This review aims to present a concise state of the art of DNA methylation reprogramming in early development in fish by summarizing findings from different research groups investigating methylation reprogramming patterns in teleosts, while keeping in mind the ramifications of the methodology used, then comparing those patterns to reprogramming patterns in mammals.
Collapse
Affiliation(s)
- Sébastien Matlosz
- Institute of Life and Environmental Sciences, University of Iceland, Reykjavík, Iceland
| | | | - Arnar Pálsson
- Institute of Life and Environmental Sciences, University of Iceland, Reykjavík, Iceland
| | - Zophonías O Jónsson
- Institute of Life and Environmental Sciences, University of Iceland, Reykjavík, Iceland
| |
Collapse
|
4
|
Angeloni A, Fissette S, Kaya D, Hammond JM, Gamaarachchi H, Deveson IW, Klose RJ, Li W, Zhang X, Bogdanovic O. Extensive DNA methylome rearrangement during early lamprey embryogenesis. Nat Commun 2024; 15:1977. [PMID: 38438347 PMCID: PMC10912607 DOI: 10.1038/s41467-024-46085-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2023] [Accepted: 02/13/2024] [Indexed: 03/06/2024] Open
Abstract
DNA methylation (5mC) is a repressive gene regulatory mark widespread in vertebrate genomes, yet the developmental dynamics in which 5mC patterns are established vary across species. While mammals undergo two rounds of global 5mC erasure, teleosts, for example, exhibit localized maternal-to-paternal 5mC remodeling. Here, we studied 5mC dynamics during the embryonic development of sea lamprey, a jawless vertebrate which occupies a critical phylogenetic position as the sister group of the jawed vertebrates. We employed 5mC quantification in lamprey embryos and tissues, and discovered large-scale maternal-to-paternal epigenome remodeling that affects ~30% of the embryonic genome and is predominantly associated with partially methylated domains. We further demonstrate that sequences eliminated during programmed genome rearrangement (PGR), are hypermethylated in sperm prior to the onset of PGR. Our study thus unveils important insights into the evolutionary origins of vertebrate 5mC reprogramming, and how this process might participate in diverse developmental strategies.
Collapse
Affiliation(s)
- Allegra Angeloni
- Garvan Institute of Medical Research, Sydney, NSW, Australia
- School of Biotechnology and Biomolecular Sciences, University of New South Wales, Sydney, NSW, Australia
| | - Skye Fissette
- Department of Fisheries and Wildlife, Michigan State University, East Lansing, MI, USA
| | - Deniz Kaya
- Department of Biochemistry, University of Oxford, Oxford, UK
| | - Jillian M Hammond
- Genomics Pillar, Garvan Institute of Medical Research, Sydney, NSW, Australia
- Centre for Population Genomics, Garvan Institute of Medical Research and Murdoch Children's Research Institute, Darlinghurst, NSW, Australia
| | - Hasindu Gamaarachchi
- Genomics Pillar, Garvan Institute of Medical Research, Sydney, NSW, Australia
- Centre for Population Genomics, Garvan Institute of Medical Research and Murdoch Children's Research Institute, Darlinghurst, NSW, Australia
- School of Computer Science and Engineering, University of New South Wales, Sydney, NSW, Australia
| | - Ira W Deveson
- Genomics Pillar, Garvan Institute of Medical Research, Sydney, NSW, Australia
- Centre for Population Genomics, Garvan Institute of Medical Research and Murdoch Children's Research Institute, Darlinghurst, NSW, Australia
- Faculty of Medicine, University of New South Wales, Sydney, NSW, Australia
| | - Robert J Klose
- Department of Biochemistry, University of Oxford, Oxford, UK
| | - Weiming Li
- Department of Fisheries and Wildlife, Michigan State University, East Lansing, MI, USA
| | - Xiaotian Zhang
- Center for Epigenetics, Van Andel Research Institute, Grand Rapids, USA
- University of Texas Health Science Center, Houston, TX, USA
| | - Ozren Bogdanovic
- Garvan Institute of Medical Research, Sydney, NSW, Australia.
- School of Biotechnology and Biomolecular Sciences, University of New South Wales, Sydney, NSW, Australia.
- Centro Andaluz de Biología del Desarrollo, CSIC-Universidad Pablo de Olavide-Junta de Andalucía, Seville, Spain.
| |
Collapse
|
5
|
El Kamouh M, Brionne A, Sayyari A, Lallias D, Labbé C, Laurent A. Strengths and limitations of reduced representation bisulfite sequencing (RRBS) in the perspective of DNA methylation analysis in fish: a case-study on rainbow trout spermatozoa. FISH PHYSIOLOGY AND BIOCHEMISTRY 2024:10.1007/s10695-024-01326-5. [PMID: 38427283 DOI: 10.1007/s10695-024-01326-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Accepted: 02/16/2024] [Indexed: 03/02/2024]
Abstract
DNA methylation in CpG dinucleotides is an important epigenetic mark in fish spermatozoa since it has been shown that some sperm methylome features are transmitted to the offspring. Reduced representation bisulfite sequencing (RRBS) is one genome-scale methods developed to assess DNA methylation at CpG sites. It allows the sequencing of a reduced fraction of the genome expected to be enriched in CpGs. The aim of this study is to characterize the extent of the CpG sites that can be identified in the RRBS-reduced sequenced fraction of rainbow trout spermatozoa, in order to evaluate the potential of RRBS for sperm DNA methylation studies. We observed that RRBS did provide a reduced amount of genomic data, the sum of the CpGs analyzed on 12 males spanning 9% of the total genomic CpGs. CpGs were only slightly enriched in the RRBS data (×1.7 times the sequenced nucleotides), the possible causes being linked to trout genome structure and sequenced fragments size. All genomic functional features were represented in our CpG dataset, with a noticeable enrichment in exons but, strikingly, not in promoters. The number of CpGs shared between biological replicates was low, but this proportion reached workable values from six biological replicates (46% of the analyzed cytosines) on. The choices that are to be made regarding fragment size selection and the options during bioinformatic data processing are discussed. In all, RRBS is a relevant first-approach method to scan the CpG DNA methylation status of spermatozoa along rainbow trout genome, although in a very reduced pattern among biological replicates.
Collapse
Affiliation(s)
| | | | - Amin Sayyari
- Department of Production Animal Clinical Sciences, Faculty of Veterinary Medicine, Norwegian University of Life Sciences, Ås, Norway
| | - Delphine Lallias
- Université Paris-Saclay, INRAE, AgroParisTech, GABI, Jouy-en-Josas, France
| | - Catherine Labbé
- INRAE, Fish Physiology and Genomics, UR 1037, Rennes, France.
| | - Audrey Laurent
- INRAE, Fish Physiology and Genomics, UR 1037, Rennes, France
| |
Collapse
|
6
|
Monteagudo-Sánchez A, Noordermeer D, Greenberg MVC. The impact of DNA methylation on CTCF-mediated 3D genome organization. Nat Struct Mol Biol 2024; 31:404-412. [PMID: 38499830 DOI: 10.1038/s41594-024-01241-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Accepted: 02/05/2024] [Indexed: 03/20/2024]
Abstract
Cytosine DNA methylation is a highly conserved epigenetic mark in eukaryotes. Although the role of DNA methylation at gene promoters and repetitive elements has been extensively studied, the function of DNA methylation in other genomic contexts remains less clear. In the nucleus of mammalian cells, the genome is spatially organized at different levels, and strongly influences myriad genomic processes. There are a number of factors that regulate the three-dimensional (3D) organization of the genome, with the CTCF insulator protein being among the most well-characterized. Pertinently, CTCF binding has been reported as being DNA methylation-sensitive in certain contexts, perhaps most notably in the process of genomic imprinting. Therefore, it stands to reason that DNA methylation may play a broader role in the regulation of chromatin architecture. Here we summarize the current understanding that is relevant to both the mammalian DNA methylation and chromatin architecture fields and attempt to assess the extent to which DNA methylation impacts the folding of the genome. The focus is in early embryonic development and cellular transitions when the epigenome is in flux, but we also describe insights from pathological contexts, such as cancer, in which the epigenome and 3D genome organization are misregulated.
Collapse
Affiliation(s)
| | - Daan Noordermeer
- Université Paris-Saclay, CEA, CNRS, Institute for Integrative Biology of the Cell (I2BC), Gif-sur-Yvette, France
| | | |
Collapse
|
7
|
Nayak R, Franěk R, Laurent A, Pšenička M. Genome-wide comparative methylation analysis reveals the fate of germ stem cells after surrogate production in teleost. BMC Biol 2024; 22:39. [PMID: 38360607 PMCID: PMC10870548 DOI: 10.1186/s12915-024-01842-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Accepted: 02/09/2024] [Indexed: 02/17/2024] Open
Abstract
BACKGROUND Surrogate production by germline stem cell transplantation is a powerful method to produce donor-derived gametes via a host, a practice known as surrogacy. The gametes produced by surrogates are often analysed on the basis of their morphology and species-specific genotyping, which enables conclusion to be drawn about the donor's characteristics. However, in-depth information, such as data on epigenetic changes, is rarely acquired. Germ cells develop in close contact with supporting somatic cells during gametogenesis in vertebrates, and we hypothesize that the recipient's gonadal environment may cause epigenetic changes in produced gametes and progeny. Here, we extensively characterize the DNA methylome of donor-derived sperm and their intergenerational effects in both inter- and intraspecific surrogates. RESULTS We found more than 3000 differentially methylated regions in both the sperm and progeny derived from inter- and intraspecific surrogates. Hypermethylation in the promoter regions of the protocadherin gamma gene in the intraspecific surrogates was found to be associated with germline transmission. On the contrary, gene expression level and the embryonic development of the offspring remained unaffected. We also discovered MAPK/p53 pathway disruption in interspecific surrogates due to promoter hypermethylation and identified that the inefficient removal of meiotic-arrested endogenous germ cells in hybrid gonads led to the production of infertile spermatozoa. CONCLUSIONS Donor-derived sperm and progeny from inter- and intraspecific surrogates were more globally hypermethylated than those of the donors. The observed changes in DNA methylation marks in the surrogates had no significant phenotypic effects in the offspring.
Collapse
Affiliation(s)
- Rigolin Nayak
- The University of South Bohemia in Ceske Budejovice, Faculty of Fisheries and Protection of Waters, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, Zatisi 728/II, 389 25, Vodnany, Czech Republic.
| | - Roman Franěk
- The University of South Bohemia in Ceske Budejovice, Faculty of Fisheries and Protection of Waters, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, Zatisi 728/II, 389 25, Vodnany, Czech Republic
- Department of Genetics, The Silberman Institute, The Hebrew University of Jerusalem, Jerusalem, Israel
| | - Audrey Laurent
- Fish Physiology and Genomics Laboratory, INRAE, Campus de Beaulieu, 35000, Rennes, France
| | - Martin Pšenička
- The University of South Bohemia in Ceske Budejovice, Faculty of Fisheries and Protection of Waters, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, Zatisi 728/II, 389 25, Vodnany, Czech Republic
| |
Collapse
|
8
|
Pierron F, Daramy F, Heroin D, Daffe G, Barré A, Bouchez O, Nikolski M. Sex-specific DNA methylation and transcription of zbtb38 and effects of gene-environment interactions on its natural antisense transcript in zebrafish. Epigenetics 2023; 18:2260963. [PMID: 37782752 PMCID: PMC10547075 DOI: 10.1080/15592294.2023.2260963] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Accepted: 09/06/2023] [Indexed: 10/04/2023] Open
Abstract
There is increasing evidence for the involvement of epigenetics in sex determination, maintenance, and plasticity, from plants to humans. In our previous work, we reported a transgenerational feminization of a zebrafish population for which the first generation was exposed to cadmium, a metal with endocrine disrupting effects. In this study, starting from the previously performed whole methylome analysis, we focused on the zbtb38 gene and hypothesized that it could be involved in sex differentiation and Cd-induced offspring feminization. We observed sex-specific patterns of both DNA methylation and RNA transcription levels of zbtb38. We also discovered that the non-coding exon 3 of zbtb38 encodes for a natural antisense transcript (NAT). The activity of this NAT was found to be influenced by both genetic and environmental factors. Furthermore, increasing transcription levels of this NAT in parental gametes was highly correlated with offspring sex ratios. Since zbtb38 itself encodes for a transcription factor that binds methylated DNA, our results support a non-negligible role of zbtb38 not only in orchestrating the sex-specific transcriptome (i.e., sex differentiation) but also, via its NAT, offspring sex ratios.
Collapse
Affiliation(s)
| | - Flore Daramy
- Univ Bordeaux, CNRS, Bordeaux INP, Pessac, France
| | | | | | - Aurélien Barré
- Univ Bordeaux, Bordeaux Bioinformatics Center, Bordeaux, France
| | - Olivier Bouchez
- INRAE, US 1426, GeT-PlaGe, Genotoul, Castanet-Tolosan, France
| | - Macha Nikolski
- Univ Bordeaux, Bordeaux Bioinformatics Center, Bordeaux, France
- Univ Bordeaux, CNRS, IBGC, Bordeaux, France
| |
Collapse
|
9
|
Rieger I, Weintraub G, Lev I, Goldstein K, Bar-Zvi D, Anava S, Gingold H, Shaham S, Rechavi O. Nucleus-independent transgenerational small RNA inheritance in Caenorhabditis elegans. SCIENCE ADVANCES 2023; 9:eadj8618. [PMID: 37878696 PMCID: PMC10599617 DOI: 10.1126/sciadv.adj8618] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Accepted: 09/20/2023] [Indexed: 10/27/2023]
Abstract
In Caenorhabditis elegans worms, epigenetic information transmits transgenerationally. Still, it is unknown whether the effects transfer to the next generation inside or outside of the nucleus. Here, we use the tractability of gene-specific double-stranded RNA-induced silencing to demonstrate that RNA interference can be inherited independently of any nuclear factors via mothers that are genetically engineered to transmit only their ooplasm but not the oocytes' nuclei to the next generation. We characterize the mechanisms and, using RNA sequencing, chimeric worms, and sequence polymorphism between different isolates, identify endogenous small RNAs which, similarly to exogenous siRNAs, are inherited in a nucleus-independent manner. From a historical perspective, these results might be regarded as partial vindication of discredited cytoplasmic inheritance theories from the 19th century, such as Darwin's "pangenesis" theory.
Collapse
Affiliation(s)
- Itai Rieger
- Department of Neurobiology, Wise Faculty of Life Sciences and Sagol School of Neuroscience, Tel Aviv University, Tel Aviv, Israel
| | - Guy Weintraub
- Department of Neurobiology, Wise Faculty of Life Sciences and Sagol School of Neuroscience, Tel Aviv University, Tel Aviv, Israel
| | - Itamar Lev
- Department of Neurobiology, Wise Faculty of Life Sciences and Sagol School of Neuroscience, Tel Aviv University, Tel Aviv, Israel
| | - Kesem Goldstein
- Department of Neurobiology, Wise Faculty of Life Sciences and Sagol School of Neuroscience, Tel Aviv University, Tel Aviv, Israel
| | - Dana Bar-Zvi
- Department of Neurobiology, Wise Faculty of Life Sciences and Sagol School of Neuroscience, Tel Aviv University, Tel Aviv, Israel
| | - Sarit Anava
- Department of Neurobiology, Wise Faculty of Life Sciences and Sagol School of Neuroscience, Tel Aviv University, Tel Aviv, Israel
| | - Hila Gingold
- Department of Neurobiology, Wise Faculty of Life Sciences and Sagol School of Neuroscience, Tel Aviv University, Tel Aviv, Israel
| | - Shai Shaham
- Laboratory of Developmental Genetics, The Rockefeller University, New York, NY, USA
| | - Oded Rechavi
- Department of Neurobiology, Wise Faculty of Life Sciences and Sagol School of Neuroscience, Tel Aviv University, Tel Aviv, Israel
| |
Collapse
|
10
|
Bond DM, Ortega-Recalde O, Laird MK, Hayakawa T, Richardson KS, Reese FCB, Kyle B, McIsaac-Williams BE, Robertson BC, van Heezik Y, Adams AL, Chang WS, Haase B, Mountcastle J, Driller M, Collins J, Howe K, Go Y, Thibaud-Nissen F, Lister NC, Waters PD, Fedrigo O, Jarvis ED, Gemmell NJ, Alexander A, Hore TA. The admixed brushtail possum genome reveals invasion history in New Zealand and novel imprinted genes. Nat Commun 2023; 14:6364. [PMID: 37848431 PMCID: PMC10582058 DOI: 10.1038/s41467-023-41784-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Accepted: 09/13/2023] [Indexed: 10/19/2023] Open
Abstract
Combining genome assembly with population and functional genomics can provide valuable insights to development and evolution, as well as tools for species management. Here, we present a chromosome-level genome assembly of the common brushtail possum (Trichosurus vulpecula), a model marsupial threatened in parts of their native range in Australia, but also a major introduced pest in New Zealand. Functional genomics reveals post-natal activation of chemosensory and metabolic genes, reflecting unique adaptations to altricial birth and delayed weaning, a hallmark of marsupial development. Nuclear and mitochondrial analyses trace New Zealand possums to distinct Australian subspecies, which have subsequently hybridised. This admixture allowed phasing of parental alleles genome-wide, ultimately revealing at least four genes with imprinted, parent-specific expression not yet detected in other species (MLH1, EPM2AIP1, UBP1 and GPX7). We find that reprogramming of possum germline imprints, and the wider epigenome, is similar to eutherian mammals except onset occurs after birth. Together, this work is useful for genetic-based control and conservation of possums, and contributes to understanding of the evolution of novel mammalian epigenetic traits.
Collapse
Affiliation(s)
- Donna M Bond
- Department of Anatomy, University of Otago, Dunedin, New Zealand
| | | | - Melanie K Laird
- Department of Anatomy, University of Otago, Dunedin, New Zealand
| | - Takashi Hayakawa
- Faculty of Environmental Earth Science, Hokkaido University, Sapporo, Hokkaido, 060-0808, Japan
| | - Kyle S Richardson
- Department of Anatomy, University of Otago, Dunedin, New Zealand
- Biology Department, University of Montana Western, Dillon, MT, 59725, USA
| | - Finlay C B Reese
- Department of Anatomy, University of Otago, Dunedin, New Zealand
| | - Bruce Kyle
- Department of Anatomy, University of Otago, Dunedin, New Zealand
| | | | | | | | - Amy L Adams
- Department of Zoology, University of Otago, Dunedin, New Zealand
| | - Wei-Shan Chang
- School of Life and Environmental Science, Faculty of Science, The University of Sydney, Sydney, NSW, Australia
- Health and Biosecurity, CSIRO, Canberra, ACT, Australia
| | - Bettina Haase
- Vertebrate Genome Laboratory, The Rockefeller University, New York, NY, USA
| | | | | | - Joanna Collins
- Tree of Life, Wellcome Sanger Institute, Hinxton, Cambridge, UK
| | - Kerstin Howe
- Tree of Life, Wellcome Sanger Institute, Hinxton, Cambridge, UK
| | - Yasuhiro Go
- Graduate School of Information Science, Hyogo University, Hyogo, Japan
- Cognitive Genomics Research Group, Exploratory Research Center on Life and Living Systems (ExCELLS), National Institutes of Natural Sciences, Aichi, Japan
- Department of System Neuroscience, National Institute for Physiological Sciences, Aichi, Japan
| | - Francoise Thibaud-Nissen
- National Center for Biotechnology Information, National Library of Medicine, National Institutes of Health, Bethesda, MD, USA
| | - Nicholas C Lister
- School of Biotechnology and Biomolecular Science, Faculty of Science, UNSW Sydney, Sydney, NSW, 2052, Australia
| | - Paul D Waters
- School of Biotechnology and Biomolecular Science, Faculty of Science, UNSW Sydney, Sydney, NSW, 2052, Australia
| | - Olivier Fedrigo
- Vertebrate Genome Laboratory, The Rockefeller University, New York, NY, USA
| | - Erich D Jarvis
- Vertebrate Genome Laboratory, The Rockefeller University, New York, NY, USA
- Laboratory of Neurogenetics of Language, The Rockefeller University, New York, NY, 10065, USA
- Howard Hughes Medical Institute, Chevy Chase, MD, 20815, USA
| | - Neil J Gemmell
- Department of Anatomy, University of Otago, Dunedin, New Zealand
| | - Alana Alexander
- Department of Anatomy, University of Otago, Dunedin, New Zealand
| | - Timothy A Hore
- Department of Anatomy, University of Otago, Dunedin, New Zealand.
| |
Collapse
|
11
|
Ross SE, Vázquez-Marín J, Gert KRB, González-Rajal Á, Dinger ME, Pauli A, Martínez-Morales JR, Bogdanovic O. Evolutionary conservation of embryonic DNA methylome remodelling in distantly related teleost species. Nucleic Acids Res 2023; 51:9658-9671. [PMID: 37615576 PMCID: PMC10570028 DOI: 10.1093/nar/gkad695] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Revised: 07/28/2023] [Accepted: 08/09/2023] [Indexed: 08/25/2023] Open
Abstract
Methylation of cytosines in the CG context (mCG) is the most abundant DNA modification in vertebrates that plays crucial roles in cellular differentiation and identity. After fertilization, DNA methylation patterns inherited from parental gametes are remodelled into a state compatible with embryogenesis. In mammals, this is achieved through the global erasure and re-establishment of DNA methylation patterns. However, in non-mammalian vertebrates like zebrafish, no global erasure has been observed. To investigate the evolutionary conservation and divergence of DNA methylation remodelling in teleosts, we generated base resolution DNA methylome datasets of developing medaka and medaka-zebrafish hybrid embryos. In contrast to previous reports, we show that medaka display comparable DNA methylome dynamics to zebrafish with high gametic mCG levels (sperm: ∼90%; egg: ∼75%), and adoption of a paternal-like methylome during early embryogenesis, with no signs of prior DNA methylation erasure. We also demonstrate that non-canonical DNA methylation (mCH) reprogramming at TGCT tandem repeats is a conserved feature of teleost embryogenesis. Lastly, we find remarkable evolutionary conservation of DNA methylation remodelling patterns in medaka-zebrafish hybrids, indicative of compatible DNA methylation maintenance machinery in far-related teleost species. Overall, these results suggest strong evolutionary conservation of DNA methylation remodelling pathways in teleosts, which is distinct from the global DNA methylome erasure and reestablishment observed in mammals.
Collapse
Affiliation(s)
- Samuel E Ross
- Garvan Institute of Medical Research, Sydney, Australia
- School of Biotechnology and Biomolecular Sciences, University of New South Wales, Sydney, Australia
- School of Life and Environmental Sciences, University of Sydney, Sydney, Australia
| | - Javier Vázquez-Marín
- Centro Andaluz de Biología del Desarrollo, CSIC-Universidad Pablo de Olavide-Junta de Andalucía, Seville, Spain
| | - Krista R B Gert
- Research Institute of Molecular Pathology (IMP), Vienna BioCenter (VBC), Campus-Vienna-Biocenter 1, Vienna, Austria
- Vienna BioCenter PhD Program, Doctoral School of the University of Vienna and Medical University of Vienna, A-1030, Vienna, Austria
| | - Álvaro González-Rajal
- Garvan Institute of Medical Research, Sydney, Australia
- School of Biotechnology and Biomolecular Sciences, University of New South Wales, Sydney, Australia
| | - Marcel E Dinger
- School of Biotechnology and Biomolecular Sciences, University of New South Wales, Sydney, Australia
- School of Life and Environmental Sciences, University of Sydney, Sydney, Australia
| | - Andrea Pauli
- Research Institute of Molecular Pathology (IMP), Vienna BioCenter (VBC), Campus-Vienna-Biocenter 1, Vienna, Austria
| | - Juan Ramon Martínez-Morales
- Centro Andaluz de Biología del Desarrollo, CSIC-Universidad Pablo de Olavide-Junta de Andalucía, Seville, Spain
| | - Ozren Bogdanovic
- Garvan Institute of Medical Research, Sydney, Australia
- School of Biotechnology and Biomolecular Sciences, University of New South Wales, Sydney, Australia
- Centro Andaluz de Biología del Desarrollo, CSIC-Universidad Pablo de Olavide-Junta de Andalucía, Seville, Spain
| |
Collapse
|
12
|
Zhang JG, Shi W, Ma DD, Lu ZJ, Li SY, Long XB, Ying GG. Chronic Paternal/Maternal Exposure to Environmental Concentrations of Imidacloprid and Thiamethoxam Causes Intergenerational Toxicity in Zebrafish Offspring. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2023; 57:13384-13396. [PMID: 37651267 DOI: 10.1021/acs.est.3c04371] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
Abstract
Imidacloprid (IMI) and thiamethoxam (THM) are ubiquitous in aquatic ecosystems. Their negative effects on parental fish are investigated while intergenerational effects at environmentally relevant concentrations remain unclear. In this study, F0 zebrafish exposed to IMI and THM (0, 50, and 500 ng L-1) for 144 days post-fertilization (dpf) was allowed to spawn with two modes (internal mating and cross-mating), resulting in four types of F1 generations to investigate the intergenerational effects. IMI and THM affected F0 zebrafish fecundity, gonadal development, sex hormone and VTG levels, with accumulations found in F0 muscles and ovaries. In F1 generation, paternal or maternal exposure to IMI and THM also influenced sex hormones levels and elevated the heart rate and spontaneous movement rate. LncRNA-mRNA network analysis revealed that cell cycle and oocyte meiosis-related pathways in IMI groups and steroid biosynthesis related pathways in THM groups were significantly enriched in F1 offspring. Similar transcriptional alterations of dmrt1, insl3, cdc20, ccnb1, dnd1, ddx4, cox4i1l, and cox5b2 were observed in gonads of F0 and F1 generations. The findings indicated that prolonged paternal or maternal exposure to IMI and THM could severely cause intergenerational toxicity, resulting in developmental toxicity and endocrine-disrupting effects in zebrafish offspring.
Collapse
Affiliation(s)
- Jin-Ge Zhang
- SCNU Environmental Research Institute, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Theoretical Chemistry of Environment, South China Normal University, Guangzhou 510006, China
- School of Environment, South China Normal University, University Town, Guangzhou 510006, China
| | - Wenjun Shi
- SCNU Environmental Research Institute, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Theoretical Chemistry of Environment, South China Normal University, Guangzhou 510006, China
- School of Environment, South China Normal University, University Town, Guangzhou 510006, China
| | - Dong-Dong Ma
- SCNU Environmental Research Institute, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Theoretical Chemistry of Environment, South China Normal University, Guangzhou 510006, China
- School of Environment, South China Normal University, University Town, Guangzhou 510006, China
| | - Zhi-Jie Lu
- SCNU Environmental Research Institute, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Theoretical Chemistry of Environment, South China Normal University, Guangzhou 510006, China
- School of Environment, South China Normal University, University Town, Guangzhou 510006, China
| | - Si-Ying Li
- SCNU Environmental Research Institute, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Theoretical Chemistry of Environment, South China Normal University, Guangzhou 510006, China
- School of Environment, South China Normal University, University Town, Guangzhou 510006, China
| | - Xiao-Bing Long
- SCNU Environmental Research Institute, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Theoretical Chemistry of Environment, South China Normal University, Guangzhou 510006, China
- School of Environment, South China Normal University, University Town, Guangzhou 510006, China
| | - Guang-Guo Ying
- SCNU Environmental Research Institute, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Theoretical Chemistry of Environment, South China Normal University, Guangzhou 510006, China
- School of Environment, South China Normal University, University Town, Guangzhou 510006, China
| |
Collapse
|
13
|
Marlétaz F, de la Calle-Mustienes E, Acemel RD, Paliou C, Naranjo S, Martínez-García PM, Cases I, Sleight VA, Hirschberger C, Marcet-Houben M, Navon D, Andrescavage A, Skvortsova K, Duckett PE, González-Rajal Á, Bogdanovic O, Gibcus JH, Yang L, Gallardo-Fuentes L, Sospedra I, Lopez-Rios J, Darbellay F, Visel A, Dekker J, Shubin N, Gabaldón T, Nakamura T, Tena JJ, Lupiáñez DG, Rokhsar DS, Gómez-Skarmeta JL. The little skate genome and the evolutionary emergence of wing-like fins. Nature 2023; 616:495-503. [PMID: 37046085 PMCID: PMC10115646 DOI: 10.1038/s41586-023-05868-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Accepted: 02/21/2023] [Indexed: 04/14/2023]
Abstract
Skates are cartilaginous fish whose body plan features enlarged wing-like pectoral fins, enabling them to thrive in benthic environments1,2. However, the molecular underpinnings of this unique trait remain unclear. Here we investigate the origin of this phenotypic innovation by developing the little skate Leucoraja erinacea as a genomically enabled model. Analysis of a high-quality chromosome-scale genome sequence for the little skate shows that it preserves many ancestral jawed vertebrate features compared with other sequenced genomes, including numerous ancient microchromosomes. Combining genome comparisons with extensive regulatory datasets in developing fins-including gene expression, chromatin occupancy and three-dimensional conformation-we find skate-specific genomic rearrangements that alter the three-dimensional regulatory landscape of genes that are involved in the planar cell polarity pathway. Functional inhibition of planar cell polarity signalling resulted in a reduction in anterior fin size, confirming that this pathway is a major contributor to batoid fin morphology. We also identified a fin-specific enhancer that interacts with several hoxa genes, consistent with the redeployment of hox gene expression in anterior pectoral fins, and confirmed its potential to activate transcription in the anterior fin using zebrafish reporter assays. Our findings underscore the central role of genome reorganization and regulatory variation in the evolution of phenotypes, shedding light on the molecular origin of an enigmatic trait.
Collapse
Affiliation(s)
- Ferdinand Marlétaz
- Centre for Life's Origin and Evolution, Department of Genetics, Evolution and Environment, University College London, London, UK.
- Molecular Genetics Unit, Okinawa Institute of Science and Technology Graduate University, Onna, Japan.
| | - Elisa de la Calle-Mustienes
- Centro Andaluz de Biología del Desarrollo (CABD), Consejo Superior de Investigaciones Científicas/Universidad Pablo de Olavide/Junta de Andalucía, Seville, Spain
| | - Rafael D Acemel
- Centro Andaluz de Biología del Desarrollo (CABD), Consejo Superior de Investigaciones Científicas/Universidad Pablo de Olavide/Junta de Andalucía, Seville, Spain
- Epigenetics and Sex Development Group, Max Delbrück Center for Molecular Medicine in the Helmholtz Association (MDC), Berlin Institute for Medical Systems Biology (BIMSB), Berlin, Germany
| | - Christina Paliou
- Centro Andaluz de Biología del Desarrollo (CABD), Consejo Superior de Investigaciones Científicas/Universidad Pablo de Olavide/Junta de Andalucía, Seville, Spain
| | - Silvia Naranjo
- Centro Andaluz de Biología del Desarrollo (CABD), Consejo Superior de Investigaciones Científicas/Universidad Pablo de Olavide/Junta de Andalucía, Seville, Spain
| | - Pedro Manuel Martínez-García
- Centro Andaluz de Biología del Desarrollo (CABD), Consejo Superior de Investigaciones Científicas/Universidad Pablo de Olavide/Junta de Andalucía, Seville, Spain
| | - Ildefonso Cases
- Centro Andaluz de Biología del Desarrollo (CABD), Consejo Superior de Investigaciones Científicas/Universidad Pablo de Olavide/Junta de Andalucía, Seville, Spain
| | - Victoria A Sleight
- Department of Zoology, University of Cambridge, Cambridge, UK
- School of Biological Sciences, University of Aberdeen, Aberdeen, UK
| | | | - Marina Marcet-Houben
- Barcelona Supercomputing Centre (BCS-CNS), Barcelona, Spain
- Institute for Research in Biomedicine (IRB Barcelona), The Barcelona Institute of Science and Technology, Barcelona, Spain
| | - Dina Navon
- Department of Genetics, Rutgers the State University of New Jersey, Piscataway, NJ, USA
| | - Ali Andrescavage
- Department of Genetics, Rutgers the State University of New Jersey, Piscataway, NJ, USA
| | - Ksenia Skvortsova
- Genomics and Epigenetics Division, Garvan Institute of Medical Research, Sydney, New South Wales, Australia
- Faculty of Medicine, St Vincent's Clinical School, University of New South Wales, Sydney, New South Wales, Australia
| | - Paul Edward Duckett
- Genomics and Epigenetics Division, Garvan Institute of Medical Research, Sydney, New South Wales, Australia
| | - Álvaro González-Rajal
- Genomics and Epigenetics Division, Garvan Institute of Medical Research, Sydney, New South Wales, Australia
- Faculty of Medicine, St Vincent's Clinical School, University of New South Wales, Sydney, New South Wales, Australia
| | - Ozren Bogdanovic
- Genomics and Epigenetics Division, Garvan Institute of Medical Research, Sydney, New South Wales, Australia
- School of Biotechnology and Biomolecular Sciences, University of New South Wales, Sydney, New South Wales, Australia
| | - Johan H Gibcus
- Department of Systems Biology, University of Massachusetts Chan Medical School, Worcester, MA, USA
| | - Liyan Yang
- Department of Systems Biology, University of Massachusetts Chan Medical School, Worcester, MA, USA
| | - Lourdes Gallardo-Fuentes
- Centro Andaluz de Biología del Desarrollo (CABD), Consejo Superior de Investigaciones Científicas/Universidad Pablo de Olavide/Junta de Andalucía, Seville, Spain
| | - Ismael Sospedra
- Centro Andaluz de Biología del Desarrollo (CABD), Consejo Superior de Investigaciones Científicas/Universidad Pablo de Olavide/Junta de Andalucía, Seville, Spain
| | - Javier Lopez-Rios
- Centro Andaluz de Biología del Desarrollo (CABD), Consejo Superior de Investigaciones Científicas/Universidad Pablo de Olavide/Junta de Andalucía, Seville, Spain
| | - Fabrice Darbellay
- Environmental Genomics and Systems Biology Division, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
- Department of Genetic Medicine and Development, Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | - Axel Visel
- Environmental Genomics and Systems Biology Division, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
- US Department of Energy Joint Genome Institute, Berkeley, CA, USA
- School of Natural Sciences, University of California, Merced, CA, USA
| | - Job Dekker
- Department of Systems Biology, University of Massachusetts Chan Medical School, Worcester, MA, USA
- Howard Hughes Medical Institute, Chevy Chase, MD, USA
| | - Neil Shubin
- Department of Organismal Biology and Anatomy, University of Chicago, Chicago, IL, USA
| | - Toni Gabaldón
- Barcelona Supercomputing Centre (BCS-CNS), Barcelona, Spain
- Institute for Research in Biomedicine (IRB Barcelona), The Barcelona Institute of Science and Technology, Barcelona, Spain
- Catalan Institution for Research and Advanced Studies (ICREA), Barcelona, Spain
- CIBER de Enfermedades Infecciosas, Instituto de Salud Carlos III, Madrid, Spain
| | - Tetsuya Nakamura
- Department of Genetics, Rutgers the State University of New Jersey, Piscataway, NJ, USA.
| | - Juan J Tena
- Centro Andaluz de Biología del Desarrollo (CABD), Consejo Superior de Investigaciones Científicas/Universidad Pablo de Olavide/Junta de Andalucía, Seville, Spain.
| | - Darío G Lupiáñez
- Epigenetics and Sex Development Group, Max Delbrück Center for Molecular Medicine in the Helmholtz Association (MDC), Berlin Institute for Medical Systems Biology (BIMSB), Berlin, Germany.
| | - Daniel S Rokhsar
- Molecular Genetics Unit, Okinawa Institute of Science and Technology Graduate University, Onna, Japan.
- Department of Molecular and Cell Biology, University of California, Berkeley, CA, USA.
- Chan-Zuckerberg Biohub, San Francisco, CA, USA.
| | - José Luis Gómez-Skarmeta
- Centro Andaluz de Biología del Desarrollo (CABD), Consejo Superior de Investigaciones Científicas/Universidad Pablo de Olavide/Junta de Andalucía, Seville, Spain
| |
Collapse
|
14
|
Breznak SM, Kotb NM, Rangan P. Dynamic regulation of ribosome levels and translation during development. Semin Cell Dev Biol 2023; 136:27-37. [PMID: 35725716 DOI: 10.1016/j.semcdb.2022.06.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Revised: 05/20/2022] [Accepted: 06/12/2022] [Indexed: 01/11/2023]
Abstract
The ability of ribosomes to translate mRNAs into proteins is the basis of all life. While ribosomes are essential for cell viability, reduction in levels of ribosomes can affect cell fate and developmental transitions in a tissue specific manner and can cause a plethora of related diseases called ribosomopathies. How dysregulated ribosomes homeostasis influences cell fate and developmental transitions is not fully understood. Model systems such as Drosophila and C. elegans oogenesis have been used to address these questions since defects in conserved steps in ribosome biogenesis result in stem cell differentiation and developmental defects. In this review, we first explore how ribosome levels affect stem cell differentiation. Second, we describe how ribosomal modifications and incorporation of ribosomal protein paralogs contribute to development. Third, we summarize how cells with perturbed ribosome biogenesis are sensed and eliminated during organismal growth.
Collapse
Affiliation(s)
- Shane M Breznak
- Department of Biological Sciences/RNA Institute, University at Albany SUNY, Albany, NY, 12222, USA
| | - Noor M Kotb
- Department of Biomedical Sciences, The School of Public Health, University at Albany SUNY, 11 Albany, NY 12222, USA
| | - Prashanth Rangan
- Department of Cell, Developmental, and Regenerative Biology, Black Family Stem Cell Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA.
| |
Collapse
|
15
|
Li W, Liu W, Mo C, Yi M, Gui J. Two Novel lncRNAs Regulate Primordial Germ Cell Development in Zebrafish. Cells 2023; 12:cells12040672. [PMID: 36831339 PMCID: PMC9954370 DOI: 10.3390/cells12040672] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Revised: 01/23/2023] [Accepted: 01/23/2023] [Indexed: 02/22/2023] Open
Abstract
Long noncoding RNAs (lncRNAs) are regulatory transcripts in various biological processes. However, the role of lncRNAs in germline development remains poorly understood, especially for fish primordial germ cell (PGC) development. In this study, the lncRNA profile of zebrafish PGC was revealed by single cell RNA-sequencing and bioinformatic prediction. We established the regulation network of lncRNA-mRNA associated with PGC development, from which we identified three novel lncRNAs-lnc172, lnc196, and lnc304-highly expressing in PGCs and gonads. Fluorescent in situ hybridization indicated germline-specific localization of lnc196 and lnc304 in the cytoplasm and nucleus of spermatogonia, spermatocyte, and occyte, and they were co-localized with vasa in the cytoplasm of the spermatogonia. By contrast, lnc172 was localized in the cytoplasm of male germline, myoid cells and ovarian somatic cells. Loss- and gain-of-function experiments demonstrated that knockdown and PGC-specific overexpression of lnc304 as well as universal overexpression of lnc172 significantly disrupted PGC development. In summary, the present study revealed the lncRNA profile of zebrafish PGC and identified two novel lncRNAs associated with PGC development, providing new insights for understanding the regulatory mechanism of PGC development.
Collapse
Affiliation(s)
- Wenjing Li
- School of Marine Sciences, Sun Yat-sen University, Zhuhai 519082, China
- Southern Marine Science and Engineering Guangdong Laboratory, Zhuhai 519082, China
- Guangdong Provincial Key Laboratory of Marine Resources and Coastal Engineering, Guangzhou 510275, China
| | - Wei Liu
- School of Marine Sciences, Sun Yat-sen University, Zhuhai 519082, China
- Southern Marine Science and Engineering Guangdong Laboratory, Zhuhai 519082, China
- Guangdong Provincial Key Laboratory of Marine Resources and Coastal Engineering, Guangzhou 510275, China
| | - Chengyu Mo
- School of Marine Sciences, Sun Yat-sen University, Zhuhai 519082, China
- Southern Marine Science and Engineering Guangdong Laboratory, Zhuhai 519082, China
- Guangdong Provincial Key Laboratory of Marine Resources and Coastal Engineering, Guangzhou 510275, China
| | - Meisheng Yi
- School of Marine Sciences, Sun Yat-sen University, Zhuhai 519082, China
- Southern Marine Science and Engineering Guangdong Laboratory, Zhuhai 519082, China
- Guangdong Provincial Key Laboratory of Marine Resources and Coastal Engineering, Guangzhou 510275, China
- Correspondence: (M.Y.); (J.G.)
| | - Jianfang Gui
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, The Innovation Academy of Seed Design, Chinese Academy of Sciences, Wuhan 420072, China
- Correspondence: (M.Y.); (J.G.)
| |
Collapse
|
16
|
Fallet M, Blanc M, Di Criscio M, Antczak P, Engwall M, Guerrero Bosagna C, Rüegg J, Keiter SH. Present and future challenges for the investigation of transgenerational epigenetic inheritance. ENVIRONMENT INTERNATIONAL 2023; 172:107776. [PMID: 36731188 DOI: 10.1016/j.envint.2023.107776] [Citation(s) in RCA: 15] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2022] [Revised: 01/18/2023] [Accepted: 01/23/2023] [Indexed: 06/18/2023]
Abstract
Epigenetic pathways are essential in different biological processes and in phenotype-environment interactions in response to different stressors and they can induce phenotypic plasticity. They encompass several processes that are mitotically and, in some cases, meiotically heritable, so they can be transferred to subsequent generations via the germline. Transgenerational Epigenetic Inheritance (TEI) describes the phenomenon that phenotypic traits, such as changes in fertility, metabolic function, or behavior, induced by environmental factors (e.g., parental care, pathogens, pollutants, climate change), can be transferred to offspring generations via epigenetic mechanisms. Investigations on TEI contribute to deciphering the role of epigenetic mechanisms in adaptation, adversity, and evolution. However, molecular mechanisms underlying the transmission of epigenetic changes between generations, and the downstream chain of events leading to persistent phenotypic changes, remain unclear. Therefore, inter-, (transmission of information between parental and offspring generation via direct exposure) and transgenerational (transmission of information through several generations with disappearance of the triggering factor) consequences of epigenetic modifications remain major issues in the field of modern biology. In this article, we review and describe the major gaps and issues still encountered in the TEI field: the general challenges faced in epigenetic research; deciphering the key epigenetic mechanisms in inheritance processes; identifying the relevant drivers for TEI and implement a collaborative and multi-disciplinary approach to study TEI. Finally, we provide suggestions on how to overcome these challenges and ultimately be able to identify the specific contribution of epigenetics in transgenerational inheritance and use the correct tools for environmental science investigation and biomarkers identification.
Collapse
Affiliation(s)
- Manon Fallet
- Man-Technology-Environment Research Centre (MTM), School of Science and Technology, Örebro University, Fakultetsgatan 1, 70182 Örebro, Sweden; Department of Biochemistry, Dorothy Crowfoot Hodgkin Building, University of Oxford, South Parks Rd, Oxford OX1 3QU, United Kingdom.
| | - Mélanie Blanc
- MARBEC, Univ Montpellier, CNRS, Ifremer, IRD, INRAE, Palavas, France
| | - Michela Di Criscio
- Department of Organismal Biology, Uppsala University, Norbyv. 18A, 75236 Uppsala, Sweden
| | - Philipp Antczak
- University of Cologne, Faculty of Medicine and Cologne University Hospital, Center for Molecular Medicine Cologne, Germany; Excellence Cluster on Cellular Stress Responses in Aging Associated Diseases, University of Cologne, Cologne, Germany
| | - Magnus Engwall
- Man-Technology-Environment Research Centre (MTM), School of Science and Technology, Örebro University, Fakultetsgatan 1, 70182 Örebro, Sweden
| | | | - Joëlle Rüegg
- Department of Organismal Biology, Uppsala University, Norbyv. 18A, 75236 Uppsala, Sweden
| | - Steffen H Keiter
- Man-Technology-Environment Research Centre (MTM), School of Science and Technology, Örebro University, Fakultetsgatan 1, 70182 Örebro, Sweden
| |
Collapse
|
17
|
Vernaz G, Hudson AG, Santos ME, Fischer B, Carruthers M, Shechonge AH, Gabagambi NP, Tyers AM, Ngatunga BP, Malinsky M, Durbin R, Turner GF, Genner MJ, Miska EA. Epigenetic divergence during early stages of speciation in an African crater lake cichlid fish. Nat Ecol Evol 2022; 6:1940-1951. [PMID: 36266459 PMCID: PMC9715432 DOI: 10.1038/s41559-022-01894-w] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2021] [Accepted: 08/26/2022] [Indexed: 12/15/2022]
Abstract
Epigenetic variation can alter transcription and promote phenotypic divergence between populations facing different environmental challenges. Here, we assess the epigenetic basis of diversification during the early stages of speciation. Specifically, we focus on the extent and functional relevance of DNA methylome divergence in the very young radiation of Astatotilapia calliptera in crater Lake Masoko, southern Tanzania. Our study focuses on two lake ecomorphs that diverged approximately 1,000 years ago and a population in the nearby river from which they separated approximately 10,000 years ago. The two lake ecomorphs show no fixed genetic differentiation, yet are characterized by different morphologies, depth preferences and diets. We report extensive genome-wide methylome divergence between the two lake ecomorphs, and between the lake and river populations, linked to key biological processes and associated with altered transcriptional activity of ecologically relevant genes. Such genes differing between lake ecomorphs include those involved in steroid metabolism, hemoglobin composition and erythropoiesis, consistent with their divergent habitat occupancy. Using a common-garden experiment, we found that global methylation profiles are often rapidly remodeled across generations but ecomorph-specific differences can be inherited. Collectively, our study suggests an epigenetic contribution to the early stages of vertebrate speciation.
Collapse
Affiliation(s)
- Grégoire Vernaz
- Wellcome/Cancer Research UK Gurdon Institute, University of Cambridge, Cambridge, UK.
- Department of Genetics, University of Cambridge, Cambridge, UK.
- Wellcome Sanger Institute, Hinxton, UK.
| | - Alan G Hudson
- School of Biological Sciences, University of Bristol, Bristol, UK
- School of Life Sciences, University of Hawai'i at Mānoa, Honolulu, HI, USA
| | - M Emília Santos
- Department of Zoology, University of Cambridge, Cambridge, UK
| | - Bettina Fischer
- Department of Genetics, University of Cambridge, Cambridge, UK
| | | | | | | | - Alexandra M Tyers
- School of Natural Sciences, Bangor University, Bangor, UK
- Max Planck Institute for Biology of Ageing, Cologne, Germany
| | | | - Milan Malinsky
- Wellcome Sanger Institute, Hinxton, UK
- Institute of Ecology and Evolution, University of Bern, Bern, Switzerland
| | - Richard Durbin
- Department of Genetics, University of Cambridge, Cambridge, UK
- Wellcome Sanger Institute, Hinxton, UK
| | | | - Martin J Genner
- School of Biological Sciences, University of Bristol, Bristol, UK.
| | - Eric A Miska
- Wellcome/Cancer Research UK Gurdon Institute, University of Cambridge, Cambridge, UK.
- Department of Genetics, University of Cambridge, Cambridge, UK.
- Wellcome Sanger Institute, Hinxton, UK.
| |
Collapse
|
18
|
Pierron F, Heroin D, Daffe G, Daramy F, Barré A, Bouchez O, Romero-Ramirez A, Gonzalez P, Nikolski M. Genetic and epigenetic interplay allows rapid transgenerational adaptation to metal pollution in zebrafish. ENVIRONMENTAL EPIGENETICS 2022; 8:dvac022. [PMID: 36474803 PMCID: PMC9716877 DOI: 10.1093/eep/dvac022] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Revised: 09/21/2022] [Accepted: 10/21/2022] [Indexed: 05/26/2023]
Abstract
Despite still being a matter of debate, there is growing evidence that pollutant-induced epigenetic changes can be propagated across generations. Whereas such modifications could have long-lasting effects on organisms and even on population, environmentally relevant data from long-term exposure combined with follow-up through multiple generations remain scarce for non-mammalian species. We performed a transgenerational experiment comprising four successive generations of zebrafish. Only fish from the first generation were exposed to an environmentally realistic concentration of cadmium (Cd). Using a whole methylome analysis, we first identified the DNA regions that were differentially methylated in response to Cd exposure and common to fish of the first two generations. Among them, we then focused our investigations on the exon 3 (ex3) of the cep19 gene. We indeed recorded transgenerational growth disorders in Cd-exposed fish, and a mutation in this exon is known to cause morbid obesity in mammals. Its methylation level was thus determined in zebrafish from all the four generations by means of a targeted and base resolution method. We observed a transgenerational inheritance of Cd-induced DNA methylation changes up to the fourth generation. However, these changes were closely associated with genetic variations, mainly a single nucleotide polymorphism. This single nucleotide polymorphism was itself at the origin of the creation or deletion of a methylation site and deeply impacted the methylation level of neighboring methylation sites. Cd-induced epigenetic changes were associated with different mRNA transcripts and an improved condition of Cd fish. Our results emphasize a tight relationship between genetic and epigenetic mechanisms and suggest that their interplay and pre-existing diversity can allow rapid adaptation to anthropogenic environmental changes.
Collapse
Affiliation(s)
- Fabien Pierron
- *Correspondence address. UMR 5805 EPOC – OASU, Station Marine d’Arcachon, Université de Bordeaux, Place du Docteur Bertrand Peyneau, Arcachon 33120, France. Tel: +335 56 22 39 33; Fax: +335 40 70 85 04; E-mail:
| | - Débora Heroin
- University of Bordeaux, CNRS, Bordeaux INP, EPOC, UMR 5805, Pessac 33600, France
| | - Guillemine Daffe
- University of Bordeaux, CNRS, INRAE, La Rochelle University, UMS 2567 POREA, Pessac 33615, France
| | - Flore Daramy
- University of Bordeaux, CNRS, Bordeaux INP, EPOC, UMR 5805, Pessac 33600, France
| | - Aurélien Barré
- University of Bordeaux, Bordeaux Bioinformatics Center, Bordeaux, 33076, France
| | - Olivier Bouchez
- INRAE, US 1426, GeT-PlaGe, Genotoul, Castanet-Tolosan 31326, France
| | | | - Patrice Gonzalez
- University of Bordeaux, CNRS, Bordeaux INP, EPOC, UMR 5805, Pessac 33600, France
| | - Macha Nikolski
- University of Bordeaux, Bordeaux Bioinformatics Center, Bordeaux, 33076, France
- University of Bordeaux, CNRS, IBGC, UMR 5095, Bordeaux 33077, France
| |
Collapse
|
19
|
Cheng H, Shang D, Zhou R. Germline stem cells in human. Signal Transduct Target Ther 2022; 7:345. [PMID: 36184610 PMCID: PMC9527259 DOI: 10.1038/s41392-022-01197-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Revised: 09/06/2022] [Accepted: 09/14/2022] [Indexed: 12/02/2022] Open
Abstract
The germline cells are essential for the propagation of human beings, thus essential for the survival of mankind. The germline stem cells, as a unique cell type, generate various states of germ stem cells and then differentiate into specialized cells, spermatozoa and ova, for producing offspring, while self-renew to generate more stem cells. Abnormal development of germline stem cells often causes severe diseases in humans, including infertility and cancer. Primordial germ cells (PGCs) first emerge during early embryonic development, migrate into the gentile ridge, and then join in the formation of gonads. In males, they differentiate into spermatogonial stem cells, which give rise to spermatozoa via meiosis from the onset of puberty, while in females, the female germline stem cells (FGSCs) retain stemness in the ovary and initiate meiosis to generate oocytes. Primordial germ cell-like cells (PGCLCs) can be induced in vitro from embryonic stem cells or induced pluripotent stem cells. In this review, we focus on current advances in these embryonic and adult germline stem cells, and the induced PGCLCs in humans, provide an overview of molecular mechanisms underlying the development and differentiation of the germline stem cells and outline their physiological functions, pathological implications, and clinical applications.
Collapse
Affiliation(s)
- Hanhua Cheng
- Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Renmin Hospital of Wuhan University, Wuhan University, 430072, Wuhan, China.
| | - Dantong Shang
- Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Renmin Hospital of Wuhan University, Wuhan University, 430072, Wuhan, China
| | - Rongjia Zhou
- Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Renmin Hospital of Wuhan University, Wuhan University, 430072, Wuhan, China.
| |
Collapse
|
20
|
Jiao F, Ma Y, Hu T, Qiao K, Jiang Y, Zhu W, Jin Q, Gui W. Prolonged exposure of azocyclotin induced inter- and transgenerational endocrine disruption on Danio rerio linked to transcriptomic and DNA methylomic alterations. CHEMOSPHERE 2022; 302:134847. [PMID: 35526687 DOI: 10.1016/j.chemosphere.2022.134847] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Revised: 04/20/2022] [Accepted: 05/02/2022] [Indexed: 06/14/2023]
Abstract
The transgenerational effect assessment linked to epigenetic analysis of environmental pollutants on eco (toxico)logical relevant species is regarded as a potential future risk-assessment tool. As an organotin acaricide widely used in China, azocyclotin can lead to endocrine disrupting effect on directly exposed environmental organisms, but whether it has transgenerational negative impact remains unknown. In order to illustrate this issue, in the present study, zebrafish, an aquatic model animal, was exposed to azocyclotin at less than μg/L level in a time span of embryonic stage to adult stage. Subsequently, the developmental and reproductive endocrine disrupting effects of azocyclotin on exposed F0 and unexposed offspring (F1 and F2) were evaluated. Result indicated that parentally exposed to 0.36 μg/L azocyclotin induced embryonic toxicity to unexposed offspring, and significantly (p < 0.05) reduced body weight (by 8.5%-13.9%), whole body length (by 4.8%-14.3%), hepatosomatic index (by 15.6%-24.3%), gonadosomatic index (by 5.3%-17.1%), egg production (by 19.5%-25.4%), estradiol content (47.0%-65.0%) and proportion of mature germ cells (by 29.3%-41.0% and 39.2%-47.7% for late oocytes and spermatozoa, respectively) in adults of F0 and offspring. Additionally, azocyclotin decreased the contents of 5-methycytosine in gonads of unexposed offspring (by 9.9%-38.6%, p < 0.05), led to genome-wide gene up-regulated expression bias and genomic DNA hypomethylation tendency in unexposed offspring. Moreover, based on the level of differentially methylated cytosine in promoter regions/gene body regions, it was found totally 5331/11,170 (in F1) and 3808/7507 (in F2) differentially expressed genes were closely related with differentially methylated genes (r > 0.6). The present study provided a primary evidence that prolonged exposure to low dose azocyclotin induced inter- and transgenerational endocrine disrupting effects on zebrafish probably linked to transcriptomic and DNA methylomic alterations.
Collapse
Affiliation(s)
- Fang Jiao
- Institute of Pesticide and Environmental Toxicology, Zhejiang University, Hangzhou, 310058, PR China
| | - Yongfang Ma
- Institute of Pesticide and Environmental Toxicology, Zhejiang University, Hangzhou, 310058, PR China
| | - Tiantian Hu
- Institute of Pesticide and Environmental Toxicology, Zhejiang University, Hangzhou, 310058, PR China
| | - Kun Qiao
- Institute of Pesticide and Environmental Toxicology, Zhejiang University, Hangzhou, 310058, PR China; Institute of Nuclear-Agricultural Sciences, Zhejiang University, Hangzhou, 310058, PR China
| | - Yao Jiang
- Institute of Pesticide and Environmental Toxicology, Zhejiang University, Hangzhou, 310058, PR China
| | - Wei Zhu
- The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310009, PR China; Key Laboratory of Precision Diagnosis and Treatment for Hepatobiliary and Pancreatic Tumor of Zhejiang Province, Hangzhou, Zhejiang, 310009, PR China.
| | - Quan Jin
- Hangzhou Center for Disease Control and Prevention, Hangzhou, 310021, PR China.
| | - Wenjun Gui
- Institute of Pesticide and Environmental Toxicology, Zhejiang University, Hangzhou, 310058, PR China; Ministry of Agriculture Key Laboratory of Molecular Biology of Crop Pathogens and Insect Pests, Zhejiang University, Hangzhou, 310058, PR China.
| |
Collapse
|
21
|
Ragsdale A, Ortega-Recalde O, Dutoit L, Besson AA, Chia JHZ, King T, Nakagawa S, Hickey A, Gemmell NJ, Hore T, Johnson SL. Paternal hypoxia exposure primes offspring for increased hypoxia resistance. BMC Biol 2022; 20:185. [PMID: 36038899 PMCID: PMC9426223 DOI: 10.1186/s12915-022-01389-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2021] [Accepted: 08/10/2022] [Indexed: 11/25/2022] Open
Abstract
BACKGROUND In a time of rapid environmental change, understanding how the challenges experienced by one generation can influence the fitness of future generations is critically needed. Using tolerance assays and transcriptomic and methylome approaches, we use zebrafish as a model to investigate cross-generational acclimation to hypoxia. RESULTS We show that short-term paternal exposure to hypoxia endows offspring with greater tolerance to acute hypoxia. We detected two hemoglobin genes that are significantly upregulated by more than 6-fold in the offspring of hypoxia exposed males. Moreover, the offspring which maintained equilibrium the longest showed greatest upregulation in hemoglobin expression. We did not detect differential methylation at any of the differentially expressed genes, suggesting that other epigenetic mechanisms are responsible for alterations in gene expression. CONCLUSIONS Overall, our findings suggest that an epigenetic memory of past hypoxia exposure is maintained and that this environmentally induced information is transferred to subsequent generations, pre-acclimating progeny to cope with hypoxic conditions.
Collapse
Affiliation(s)
| | | | - Ludovic Dutoit
- Department of Zoology, University of Otago, Dunedin, New Zealand
| | - Anne A Besson
- Department of Zoology, University of Otago, Dunedin, New Zealand
| | - Jolyn H Z Chia
- Department of Zoology, University of Otago, Dunedin, New Zealand
| | - Tania King
- Department of Zoology, University of Otago, Dunedin, New Zealand
| | - Shinichi Nakagawa
- Evolution and Ecology Research Centre, School of Biological, Earth and Environmental Sciences, University of New South Wales, Sydney, NSW, Australia
| | - Anthony Hickey
- School of Biological Sciences, University of Auckland, Auckland, New Zealand
| | - Neil J Gemmell
- Department of Anatomy, University of Otago, Dunedin, New Zealand
| | - Timothy Hore
- Department of Anatomy, University of Otago, Dunedin, New Zealand
| | - Sheri L Johnson
- Department of Zoology, University of Otago, Dunedin, New Zealand.
| |
Collapse
|
22
|
Hosseini S, Trakooljul N, Hirschfeld M, Wimmers K, Simianer H, Tetens J, Sharifi AR, Brenig B. Epigenetic Regulation of Phenotypic Sexual Plasticity Inducing Skewed Sex Ratio in Zebrafish. Front Cell Dev Biol 2022; 10:880779. [PMID: 35912111 PMCID: PMC9334531 DOI: 10.3389/fcell.2022.880779] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Accepted: 06/21/2022] [Indexed: 11/13/2022] Open
Abstract
The plasticity of sexual phenotype in response to environmental conditions results in biased sex ratios, and their variation has an effect on population dynamics. Epigenetic modifications can modulate sex ratio variation in species, where sex is determined by genetic and environmental factors. However, the role of epigenetic mechanisms underlying skewed sex ratios is far from being clear and is still an object of debate in evolutionary developmental biology. In this study, we used zebrafish as a model animal to investigate the effect of DNA methylation on sex ratio variation in sex-biased families in response to environmental temperature. Two sex-biased families with a significant difference in sex ratio were selected for genome-wide DNA methylation analysis using reduced representation bisulfite sequencing (RRBS). The results showed significant genome-wide methylation differences between male-biased and female-biased families, with a greater number of methylated CpG sites in testes than ovaries. Likewise, pronounced differences between testes and ovaries were identified within both families, where the male-biased family exhibited a higher number of methylated sites than the female-biased family. The effect of temperature showed more methylated positions in the high incubation temperature than the control temperature. We found differential methylation of many reproduction-related genes (e.g., sox9a, nr5a2, lhx8a, gata4) and genes involved in epigenetic mechanisms (e.g., dnmt3bb.1, dimt1l, hdac11, h1m) in both families. We conclude that epigenetic modifications can influence the sex ratio variation in zebrafish families and may generate skewed sex ratios, which could have a negative consequence for population fitness in species with genotype-environment interaction sex-determining system under rapid environmental changes.
Collapse
Affiliation(s)
- Shahrbanou Hosseini
- Molecular Biology of Livestock and Molecular Diagnostics Group, Department of Animal Sciences, University of Goettingen, Göttingen, Germany
- Functional Breeding Group, Department of Animal Sciences, University of Goettingen, Göttingen, Germany
- Institute of Veterinary Medicine, University of Goettingen, Göttingen, Germany
- Center for Integrated Breeding Research (CiBreed), University of Goettingen, Göttingen, Germany
- *Correspondence: Shahrbanou Hosseini, ; Nares Trakooljul,
| | - Nares Trakooljul
- Research Institute for Farm Animal Biology (FBN), Institute of Genome Biology, Genomics Unit, Dummerstorf, Germany
- *Correspondence: Shahrbanou Hosseini, ; Nares Trakooljul,
| | - Marc Hirschfeld
- Molecular Biology of Livestock and Molecular Diagnostics Group, Department of Animal Sciences, University of Goettingen, Göttingen, Germany
- Institute of Veterinary Medicine, University of Goettingen, Göttingen, Germany
| | - Klaus Wimmers
- Research Institute for Farm Animal Biology (FBN), Institute of Genome Biology, Genomics Unit, Dummerstorf, Germany
| | - Henner Simianer
- Center for Integrated Breeding Research (CiBreed), University of Goettingen, Göttingen, Germany
- Animal Breeding and Genetics Group, Department of Animal Sciences, University of Goettingen, Göttingen, Germany
| | - Jens Tetens
- Functional Breeding Group, Department of Animal Sciences, University of Goettingen, Göttingen, Germany
- Center for Integrated Breeding Research (CiBreed), University of Goettingen, Göttingen, Germany
| | - Ahmad Reza Sharifi
- Center for Integrated Breeding Research (CiBreed), University of Goettingen, Göttingen, Germany
- Animal Breeding and Genetics Group, Department of Animal Sciences, University of Goettingen, Göttingen, Germany
| | - Bertram Brenig
- Molecular Biology of Livestock and Molecular Diagnostics Group, Department of Animal Sciences, University of Goettingen, Göttingen, Germany
- Institute of Veterinary Medicine, University of Goettingen, Göttingen, Germany
- Center for Integrated Breeding Research (CiBreed), University of Goettingen, Göttingen, Germany
| |
Collapse
|
23
|
Li X, Wang M, Liu S, Chen X, Qiao Y, Yang X, Yao J, Wu S. Paternal transgenerational nutritional epigenetic effect: A new insight into nutritional manipulation to reduce the use of antibiotics in animal feeding. ANIMAL NUTRITION 2022; 11:142-151. [PMID: 36204282 PMCID: PMC9527621 DOI: 10.1016/j.aninu.2022.07.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/07/2021] [Revised: 07/10/2022] [Accepted: 07/14/2022] [Indexed: 11/15/2022]
Abstract
The use of antibiotics in animal feeding has been banned in many countries because of increasing concerns about the development of bacterial resistance to antibiotics and potential issues on food safety. Searching for antibiotic substitutes is essential. Applying transgenerational epigenetic technology to animal production could be an alternative. Some environmental changes can be transferred to memory-like responses in the offspring through epigenetic mechanisms without changing the DNA sequence. In this paper, we reviewed those nutrients and non-nutritional additives that have transgenerational epigenetic effects, including some amino acids, vitamins, and polysaccharides. The paternal transgenerational nutritional epigenetic regulation was particularly focused on mechanism of the substantial contribution of male stud animals to the animal industries. We illustrated the effects of paternal transgenerational epigenetics on the metabolism and immunity in farming animals and proposed strategies to modulate male breeding livestock or poultry.
Collapse
Affiliation(s)
- Xinyi Li
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi 712100, China
- Department of Medicine, Karolinska Institutet, Solna, Stockholm 17165, Sweden
| | - Mengya Wang
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Shimin Liu
- Institute of Agriculture, University of Western Australia, Crawley, WA 6009, Australia
| | - Xiaodong Chen
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Yu Qiao
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi 712100, China
- Department of Animal Engineering, Yangling Vocational and Technical College, Yangling, Shaanxi 712100, China
| | - Xiaojun Yang
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Junhu Yao
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi 712100, China
- Corresponding authors.
| | - Shengru Wu
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi 712100, China
- Corresponding authors.
| |
Collapse
|
24
|
Al Adhami H, Bardet AF, Dumas M, Cleroux E, Guibert S, Fauque P, Acloque H, Weber M. A comparative methylome analysis reveals conservation and divergence of DNA methylation patterns and functions in vertebrates. BMC Biol 2022; 20:70. [PMID: 35317801 PMCID: PMC8941758 DOI: 10.1186/s12915-022-01270-x] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Accepted: 03/04/2022] [Indexed: 12/24/2022] Open
Abstract
Background Cytosine DNA methylation is a heritable epigenetic mark present in most eukaryotic groups. While the patterns and functions of DNA methylation have been extensively studied in mouse and human, their conservation in other vertebrates remains poorly explored. In this study, we interrogated the distribution and function of DNA methylation in primary fibroblasts of seven vertebrate species including bio-medical models and livestock species (human, mouse, rabbit, dog, cow, pig, and chicken). Results Our data highlight both divergence and conservation of DNA methylation patterns and functions. We show that the chicken genome is hypomethylated compared to other vertebrates. Furthermore, compared to mouse, other species show a higher frequency of methylation of CpG-rich DNA. We reveal the conservation of large unmethylated valleys and patterns of DNA methylation associated with X-chromosome inactivation through vertebrate evolution and make predictions of conserved sets of imprinted genes across mammals. Finally, using chemical inhibition of DNA methylation, we show that the silencing of germline genes and endogenous retroviruses (ERVs) are conserved functions of DNA methylation in vertebrates. Conclusions Our data highlight conserved properties of DNA methylation in vertebrate genomes but at the same time point to differences between mouse and other vertebrate species. Supplementary Information The online version contains supplementary material available at 10.1186/s12915-022-01270-x.
Collapse
Affiliation(s)
- Hala Al Adhami
- University of Strasbourg, Strasbourg, France.,CNRS UMR7242, Biotechnology and Cell Signaling, 300 Bd Sébastien Brant, 67412, Illkirch Cedex, France
| | - Anaïs Flore Bardet
- University of Strasbourg, Strasbourg, France.,CNRS UMR7242, Biotechnology and Cell Signaling, 300 Bd Sébastien Brant, 67412, Illkirch Cedex, France
| | - Michael Dumas
- University of Strasbourg, Strasbourg, France.,CNRS UMR7242, Biotechnology and Cell Signaling, 300 Bd Sébastien Brant, 67412, Illkirch Cedex, France
| | - Elouan Cleroux
- University of Strasbourg, Strasbourg, France.,CNRS UMR7242, Biotechnology and Cell Signaling, 300 Bd Sébastien Brant, 67412, Illkirch Cedex, France
| | - Sylvain Guibert
- University of Strasbourg, Strasbourg, France.,CNRS UMR7242, Biotechnology and Cell Signaling, 300 Bd Sébastien Brant, 67412, Illkirch Cedex, France
| | - Patricia Fauque
- Université Bourgogne Franche-Comté, Equipe Génétique des Anomalies du Développement (GAD) INSERM UMR1231, 2 Rue Angélique Ducoudray, 21000, Dijon, France.,CHU Dijon Bourgogne, Laboratoire de Biologie de la Reproduction - CECOS, 14 rue Gaffarel, 21000, Dijon, France
| | - Hervé Acloque
- Université Paris-Saclay, INRAE, AgroParisTech, GABI, 78350, Jouy-en-Josas, France
| | - Michael Weber
- University of Strasbourg, Strasbourg, France. .,CNRS UMR7242, Biotechnology and Cell Signaling, 300 Bd Sébastien Brant, 67412, Illkirch Cedex, France.
| |
Collapse
|
25
|
Hubert JN, Demars J. Genomic Imprinting in the New Omics Era: A Model for Systems-Level Approaches. Front Genet 2022; 13:838534. [PMID: 35368671 PMCID: PMC8965095 DOI: 10.3389/fgene.2022.838534] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Accepted: 02/28/2022] [Indexed: 11/13/2022] Open
Abstract
Genomic imprinting represents a noteworthy inheritance mechanism leading to allele-specific regulations dependent of the parental origin. Imprinted loci are especially involved in essential mammalian functions related to growth, development and behavior. In this mini-review, we first offer a summary of current representations associated with genomic imprinting through key results of the three last decades. We then outline new perspectives allowed by the spread of new omics technologies tackling various interacting levels of imprinting regulations, including genomics, transcriptomics and epigenomics. We finally discuss the expected contribution of new omics data to unresolved big questions in the field.
Collapse
|
26
|
Robaire B, Delbes G, Head JA, Marlatt VL, Martyniuk CJ, Reynaud S, Trudeau VL, Mennigen JA. A cross-species comparative approach to assessing multi- and transgenerational effects of endocrine disrupting chemicals. ENVIRONMENTAL RESEARCH 2022; 204:112063. [PMID: 34562476 DOI: 10.1016/j.envres.2021.112063] [Citation(s) in RCA: 27] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Revised: 09/09/2021] [Accepted: 09/10/2021] [Indexed: 06/13/2023]
Abstract
A wide range of chemicals have been identified as endocrine disrupting chemicals (EDCs) in vertebrate species. Most studies of EDCs have focused on exposure of both male and female adults to these chemicals; however, there is clear evidence that EDCs have dramatic effects when mature or developing gametes are exposed, and consequently are associated with in multigenerational and transgenerational effects. Several publications have reviewed such actions of EDCs in subgroups of species, e.g., fish or rodents. In this review, we take a holistic approach synthesizing knowledge of the effects of EDCs across vertebrate species, including fish, anurans, birds, and mammals, and discuss the potential mechanism(s) mediating such multi- and transgenerational effects. We also propose a series of recommendations aimed at moving the field forward in a structured and coherent manner.
Collapse
Affiliation(s)
- Bernard Robaire
- Department of Pharmacology and Therapeutics and of Obstetrics and Gynecology, McGill University, Montreal, Canada.
| | - Geraldine Delbes
- Centre Armand Frappier Santé Biotechnologie, Institut National de La Recherche Scientifique (INRS), Laval, QC, Canada
| | - Jessica A Head
- Department of Natural Resource Sciences, Faculty of Agricultural and Environmental Sciences, McGill University, Montreal, Canada
| | - Vicki L Marlatt
- Department of Biological Sciences, Simon Fraser University, Burnaby, British Columbia, Canada
| | - Christopher J Martyniuk
- Department of Physiological Sciences, College of Veterinary Medicine, University of Florida, Gainesville, FL, USA
| | - Stéphane Reynaud
- Univ. Grenoble-Alpes, Université. Savoie Mont Blanc, CNRS, LECA, Grenoble, 38000, France
| | - Vance L Trudeau
- Department of Biology, University of Ottawa, Ottawa, ON, Canada
| | - Jan A Mennigen
- Department of Biology, University of Ottawa, Ottawa, ON, Canada
| |
Collapse
|
27
|
Terrazas-Salgado L, García-Gasca A, Betancourt-Lozano M, Llera-Herrera R, Alvarado-Cruz I, Yáñez-Rivera B. Epigenetic Transgenerational Modifications Induced by Xenobiotic Exposure in Zebrafish. Front Cell Dev Biol 2022; 10:832982. [PMID: 35281093 PMCID: PMC8914061 DOI: 10.3389/fcell.2022.832982] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Accepted: 01/21/2022] [Indexed: 11/23/2022] Open
Abstract
Zebrafish (Danio rerio) is a well-established vertebrate model in ecotoxicology research that responds to a wide range of xenobiotics such as pesticides, drugs, and endocrine-disrupting compounds. The epigenome can interact with the environment and transform internal and/or external signals into phenotypic responses through changes in gene transcription. Environmental exposures can also generate epigenetic variations in offspring even by indirect exposure. In this review, we address the advantages of using zebrafish as an experimental animal model to study transgenerational epigenetic processes upon exposure to xenobiotics. We focused mostly on DNA methylation, although studies on post-translational modifications of histones, and non-coding RNAs related to xenobiotic exposure in zebrafish are also discussed. A revision of the methods used to study epigenetic changes in zebrafish revealed the relevance and reproducibility for epigenetics-related research. PubMed and Google Scholar databases were consulted for original research articles published from 2013 to date, by using six keywords: zebrafish, epigenetics, exposure, parental, transgenerational, and F2. From 499 articles identified, 92 were considered, of which 14 were selected as included F2 and epigenetic mechanisms. Current knowledge regarding the effect of xenobiotics on DNA methylation, histone modifications, and changes in non-coding RNAs expressed in F2 is summarized, along with key experimental design considerations to characterize transgenerational effects.
Collapse
Affiliation(s)
| | | | | | - Raúl Llera-Herrera
- Instituto de Ciencias del Mar y Limnología—Unidad Académica Mazatlán, Universidad Nacional Autónoma de México, Mazatlán, Mexico
| | - Isabel Alvarado-Cruz
- Department of Cellular and Molecular Medicine, University of Arizona Cancer Center, Tucson, AZ, United States
| | - Beatriz Yáñez-Rivera
- Centro de Investigación en Alimentación y Desarrollo, A. C., Mazatlán, Mexico
- Consejo Nacional de Ciencia y Tecnología, México, Mexico
- *Correspondence: Beatriz Yáñez-Rivera,
| |
Collapse
|
28
|
Fellous A, Wegner KM, John U, Mark FC, Shama LNS. Windows of opportunity: Ocean warming shapes temperature-sensitive epigenetic reprogramming and gene expression across gametogenesis and embryogenesis in marine stickleback. GLOBAL CHANGE BIOLOGY 2022; 28:54-71. [PMID: 34669228 DOI: 10.1111/gcb.15942] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2021] [Revised: 09/23/2021] [Accepted: 10/14/2021] [Indexed: 06/13/2023]
Abstract
Rapid climate change is placing many marine species at risk of local extinction. Recent studies show that epigenetic mechanisms (e.g. DNA methylation, histone modifications) can facilitate both within and transgenerational plasticity to cope with changing environments. However, epigenetic reprogramming (erasure and re-establishment of epigenetic marks) during gamete and early embryo development may hinder transgenerational epigenetic inheritance. Most of our knowledge about reprogramming stems from mammals and model organisms, whereas the prevalence and extent of reprogramming among non-model species from wild populations is rarely investigated. Moreover, whether reprogramming dynamics are sensitive to changing environmental conditions is not well known, representing a key knowledge gap in the pursuit to identify mechanisms underlying links between parental exposure to changing climate patterns and environmentally adapted offspring phenotypes. Here, we investigated epigenetic reprogramming (DNA methylation/hydroxymethylation) and gene expression across gametogenesis and embryogenesis of marine stickleback (Gasterosteus aculeatus) under three ocean warming scenarios (ambient, +1.5 and +4°C). We found that parental acclimation to ocean warming led to dynamic and temperature-sensitive reprogramming throughout offspring development. Both global methylation/hydroxymethylation and expression of genes involved in epigenetic modifications were strongly and differentially affected by the increased warming scenarios. Comparing transcriptomic profiles from gonads, mature gametes and early embryonic stages showed sex-specific accumulation and temperature sensitivity of several epigenetic actors. DNA methyltransferase induction was primarily maternally inherited (suggesting maternal control of remethylation), whereas induction of several histone-modifying enzymes was shaped by both parents. Importantly, massive, temperature-specific changes to the epigenetic landscape occurred in blastula, a critical stage for successful embryo development, which could, thus, translate to substantial consequences for offspring phenotype resilience in warming environments. In summary, our study identified key stages during gamete and embryo development with temperature-sensitive reprogramming and epigenetic gene regulation, reflecting potential 'windows of opportunity' for adaptive epigenetic responses under future climate change.
Collapse
Affiliation(s)
- Alexandre Fellous
- Coastal Ecology Section, Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Wadden Sea Station Sylt, List, Germany
| | - K Mathias Wegner
- Coastal Ecology Section, Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Wadden Sea Station Sylt, List, Germany
| | - Uwe John
- Ecological Chemistry Section, Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Bremerhaven, Germany
- Helmholtz Institute for Functional Marine Biodiversity, Oldenburg, Germany
| | - Felix C Mark
- Integrative Ecophysiology Section, Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Bremerhaven, Germany
| | - Lisa N S Shama
- Coastal Ecology Section, Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Wadden Sea Station Sylt, List, Germany
| |
Collapse
|
29
|
Wu X, Zhang H, Zhang B, Zhang Y, Wang Q, Shen W, Wu X, Li L, Xia W, Nakamura R, Liu B, Liu F, Takeda H, Meng A, Xie W. Methylome inheritance and enhancer dememorization reset an epigenetic gate safeguarding embryonic programs. SCIENCE ADVANCES 2021; 7:eabl3858. [PMID: 34936444 PMCID: PMC8694617 DOI: 10.1126/sciadv.abl3858] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2021] [Accepted: 11/10/2021] [Indexed: 05/31/2023]
Abstract
Marked epigenetic reprogramming is essential to convert terminally differentiated gametes to totipotent embryos. It remains puzzling why postfertilization global DNA reprogramming occurs in mammals but not in nonmammalian vertebrates. In zebrafish, global methylome inheritance is however accompanied by extensive enhancer “dememorization” as they become fully methylated. By depleting maternal dnmt1 using oocyte microinjection, we eliminated DNA methylation in early embryos, which died around gastrulation with severe differentiation defects. Notably, methylation deficiency leads to derepression of adult tissue–specific genes and CG-rich enhancers, which acquire ectopic transcription factor binding and, unexpectedly, histone H3 lysine 4 trimethylation (H3K4me3). By contrast, embryonic enhancers are generally CG-poor and evade DNA methylation repression. Hence, global DNA hypermethylation inheritance coupled with enhancer dememorization installs an epigenetic gate that safeguards embryonic programs and ensures temporally ordered gene expression. We propose that “enhancer dememorization” underlies and unifies distinct epigenetic reprogramming modes in early development between mammals and nonmammals.
Collapse
Affiliation(s)
- Xiaotong Wu
- Tsinghua-Peking Center for Life Sciences, School of Life Sciences, Tsinghua University, Beijing 100084, China
| | - Hongmei Zhang
- Tsinghua-Peking Center for Life Sciences, School of Life Sciences, Tsinghua University, Beijing 100084, China
| | - Bingjie Zhang
- Tsinghua-Peking Center for Life Sciences, School of Life Sciences, Tsinghua University, Beijing 100084, China
| | - Yu Zhang
- Tsinghua-Peking Center for Life Sciences, School of Life Sciences, Tsinghua University, Beijing 100084, China
| | - Qiuyan Wang
- Tsinghua-Peking Center for Life Sciences, School of Life Sciences, Tsinghua University, Beijing 100084, China
| | - Weimin Shen
- Laboratory of Molecular Developmental Biology, State Key Laboratory of Membrane Biology, Tsinghua-Peking Center for Life Sciences, School of Life Sciences, Tsinghua University, Beijing 100084, China
| | - Xi Wu
- Tsinghua-Peking Center for Life Sciences, School of Life Sciences, Tsinghua University, Beijing 100084, China
| | - Lijia Li
- Tsinghua-Peking Center for Life Sciences, School of Life Sciences, Tsinghua University, Beijing 100084, China
| | - Weikun Xia
- Tsinghua-Peking Center for Life Sciences, School of Life Sciences, Tsinghua University, Beijing 100084, China
| | - Ryohei Nakamura
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Tokyo 113-0033, Japan
| | - Bofeng Liu
- Tsinghua-Peking Center for Life Sciences, School of Life Sciences, Tsinghua University, Beijing 100084, China
| | - Feng Liu
- State Key Laboratory of Membrane Biology, Institute of Zoology, Chinese Academy of Sciences, University of Chinese Academy of Science, Beijing, China
| | - Hiroyuki Takeda
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Tokyo 113-0033, Japan
| | - Anming Meng
- Laboratory of Molecular Developmental Biology, State Key Laboratory of Membrane Biology, Tsinghua-Peking Center for Life Sciences, School of Life Sciences, Tsinghua University, Beijing 100084, China
| | - Wei Xie
- Tsinghua-Peking Center for Life Sciences, School of Life Sciences, Tsinghua University, Beijing 100084, China
| |
Collapse
|
30
|
Aharon D, Marlow FL. Sexual determination in zebrafish. Cell Mol Life Sci 2021; 79:8. [PMID: 34936027 PMCID: PMC11072476 DOI: 10.1007/s00018-021-04066-4] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Revised: 11/12/2021] [Accepted: 11/29/2021] [Indexed: 01/10/2023]
Abstract
Zebrafish have emerged as a major model organism to study vertebrate reproduction due to their high fecundity and external development of eggs and embryos. The mechanisms through which zebrafish determine their sex have come under extensive investigation, as they lack a definite sex-determining chromosome and appear to have a highly complex method of sex determination. Single-gene mutagenesis has been employed to isolate the function of genes that determine zebrafish sex and regulate sex-specific differentiation, and to explore the interactions of genes that promote female or male sexual fate. In this review, we focus on recent advances in understanding of the mechanisms, including genetic and environmental factors, governing zebrafish sex development with comparisons to gene functions in other species to highlight conserved and potentially species-specific mechanisms for specifying and maintaining sexual fate.
Collapse
Affiliation(s)
- Devora Aharon
- Department of Cell, Developmental, and Regenerative Biology, Icahn School of Medicine at Mount Sinai, One Gustave L. Levy, Place Box 1020, New York, NY, 10029-6574, USA
| | - Florence L Marlow
- Department of Cell, Developmental, and Regenerative Biology, Icahn School of Medicine at Mount Sinai, One Gustave L. Levy, Place Box 1020, New York, NY, 10029-6574, USA.
| |
Collapse
|
31
|
Wellband K, Roth D, Linnansaari T, Curry RA, Bernatchez L. Environment-driven reprogramming of gamete DNA methylation occurs during maturation and is transmitted intergenerationally in Atlantic Salmon. G3 (BETHESDA, MD.) 2021; 11:jkab353. [PMID: 34849830 PMCID: PMC8664423 DOI: 10.1093/g3journal/jkab353] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/26/2021] [Accepted: 09/24/2021] [Indexed: 02/06/2023]
Abstract
An epigenetic basis for transgenerational plasticity in animals is widely theorized, but convincing empirical support is limited by taxa-specific differences in the presence and role of epigenetic mechanisms. In teleost fishes, DNA methylation generally does not undergo extensive reprogramming and has been linked with environmentally induced intergenerational effects, but solely in the context of early life environmental differences. Using whole-genome bisulfite sequencing, we demonstrate that differential methylation of sperm occurs in response to captivity during the maturation of Atlantic Salmon (Salmo salar), a species of major economic and conservation significance. We show that adult captive exposure further induces differential methylation in an F1 generation that is associated with fitness-related phenotypic differences. Some genes targeted with differential methylation were consistent with genes differential methylated in other salmonid fishes experiencing early-life hatchery rearing, as well as genes under selection in domesticated species. Our results support a mechanism of transgenerational plasticity mediated by intergenerational inheritance of DNA methylation acquired late in life for salmon. To our knowledge, this is the first-time environmental variation experienced later in life has been directly demonstrated to influence gamete DNA methylation in fish.
Collapse
Affiliation(s)
- Kyle Wellband
- Institut de Biologie Intégrative et des Systèmes, Université Laval, Québec, QC G1V 0A6, Canada
- Department of Biology, University of New Brunswick, Fredericton, NB E3B 5A3, Canada
- Canadian Rivers Institute, University of New Brunswick, Fredericton, NB E3B 5A3, Canada
| | - David Roth
- Canadian Rivers Institute, University of New Brunswick, Fredericton, NB E3B 5A3, Canada
- Faculty of Forestry and Environmental Management, University of New Brunswick, Fredericton, NB E3B 5A3, Canada
| | - Tommi Linnansaari
- Department of Biology, University of New Brunswick, Fredericton, NB E3B 5A3, Canada
- Canadian Rivers Institute, University of New Brunswick, Fredericton, NB E3B 5A3, Canada
- Faculty of Forestry and Environmental Management, University of New Brunswick, Fredericton, NB E3B 5A3, Canada
| | - R Allen Curry
- Department of Biology, University of New Brunswick, Fredericton, NB E3B 5A3, Canada
- Canadian Rivers Institute, University of New Brunswick, Fredericton, NB E3B 5A3, Canada
- Faculty of Forestry and Environmental Management, University of New Brunswick, Fredericton, NB E3B 5A3, Canada
| | - Louis Bernatchez
- Institut de Biologie Intégrative et des Systèmes, Université Laval, Québec, QC G1V 0A6, Canada
| |
Collapse
|
32
|
Li M, Rong X, Lu L, Li Y, Yao K, Ge W, Duan C. IGF-2 mRNA binding protein 2 regulates primordial germ cell development in zebrafish. Gen Comp Endocrinol 2021; 313:113875. [PMID: 34352271 DOI: 10.1016/j.ygcen.2021.113875] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Revised: 07/17/2021] [Accepted: 07/27/2021] [Indexed: 10/20/2022]
Abstract
Insulin-like growth factor 2 mRNA binding protein-2 (IGF2BP2 or IMP2) is a member of a conserved family of RNA binding proteins. These proteins bind to and regulate target mRNA localization, stability, and translation. Their structure, expression and functions in bony fish are not well understood. Here, we characterized the zebrafish igf2bp2 gene and investigated its functional role in early development. Zebrafish igf2bp2 gives rise to 4 alternatively spliced transcripts. When expressed in cultured cells, all 4 proteins were detected in the cytoplasm. Igf2bp2-A, the longest isoform, has a domain structure similar to its mammalian counterpart. Igf2bp2-B lacks one of the C-terminal KH domains, while Igf2bp2-C lacks the two N-terminal RRM domains. Igf2bp2-D lacks both regions. In adult fish, these igf2bp2 isoforms were detected exclusively in the oocyte. After fertilization, they disappeared within 6 h post fertilization (hpf). At 20 ~ 24 hpf, igf2bp2-A mRNA, but not other mRNAs, was re-expressed in the embryos including in primordial germ cells. Targeted knockdown of Igf2bp2s reduced the numbers of primordial germ cells but did not affect global patterning or growth. The effect was rescued by overexpression of Igf2bp2-A. Likewise, dominant-negative inhibition of Igf2bp2 resulted in a similar reduction in primordial germ cell number. These results not only provide new information about the structure and expression of zebrafish Igf2bp2, but also reveal a critical role of this conserved RNA binding protein in primordial germ cell development.
Collapse
Affiliation(s)
- Mingyu Li
- Laboratory of Molecular Medicine, School of Medicine and Pharmacy, Ocean University of China, Qingdao, Shandong 266003, China; Fujian Provincial Key Laboratory of Innovative Drug Target Research, School of Pharmaceutical Sciences, Xiamen University, Xiamen 361102, China.
| | - Xiaozhi Rong
- Laboratory of Molecular Medicine, School of Medicine and Pharmacy, Ocean University of China, Qingdao, Shandong 266003, China
| | - Ling Lu
- Laboratory of Molecular Medicine, School of Medicine and Pharmacy, Ocean University of China, Qingdao, Shandong 266003, China
| | - Yun Li
- Laboratory of Molecular Medicine, School of Medicine and Pharmacy, Ocean University of China, Qingdao, Shandong 266003, China
| | - Kai Yao
- School of Life Sciences, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, China; College of Life Sciences and Health, Wuhan University of Science and Technology, Wuhan, Hubei 430081, China
| | - Wei Ge
- Centre of Reproduction, Development and Aging (CRDA), Faculty of Health Sciences, University of Macau, Taipa, Macau, China
| | - Cunming Duan
- Department of Molecular, Cellular, and Developmental Biology, University of Michigan, Ann Arbor, MI 48109, USA.
| |
Collapse
|
33
|
Enhancer-associated H3K4 methylation safeguards in vitro germline competence. Nat Commun 2021; 12:5771. [PMID: 34599190 PMCID: PMC8486853 DOI: 10.1038/s41467-021-26065-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Accepted: 09/16/2021] [Indexed: 01/27/2023] Open
Abstract
Germline specification in mammals occurs through an inductive process whereby competent cells in the post-implantation epiblast differentiate into primordial germ cells (PGC). The intrinsic factors that endow epiblast cells with the competence to respond to germline inductive signals remain unknown. Single-cell RNA sequencing across multiple stages of an in vitro PGC-like cells (PGCLC) differentiation system shows that PGCLC genes initially expressed in the naïve pluripotent stage become homogeneously dismantled in germline competent epiblast like-cells (EpiLC). In contrast, the decommissioning of enhancers associated with these germline genes is incomplete. Namely, a subset of these enhancers partly retain H3K4me1, accumulate less heterochromatic marks and remain accessible and responsive to transcriptional activators. Subsequently, as in vitro germline competence is lost, these enhancers get further decommissioned and lose their responsiveness to transcriptional activators. Importantly, using H3K4me1-deficient cells, we show that the loss of this histone modification reduces the germline competence of EpiLC and decreases PGCLC differentiation efficiency. Our work suggests that, although H3K4me1 might not be essential for enhancer function, it can facilitate the (re)activation of enhancers and the establishment of gene expression programs during specific developmental transitions.
Collapse
|
34
|
Angeloni A, Bogdanovic O. Sequence determinants, function, and evolution of CpG islands. Biochem Soc Trans 2021; 49:1109-1119. [PMID: 34156435 PMCID: PMC8286816 DOI: 10.1042/bst20200695] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2021] [Revised: 05/25/2021] [Accepted: 05/26/2021] [Indexed: 12/25/2022]
Abstract
In vertebrates, cytosine-guanine (CpG) dinucleotides are predominantly methylated, with ∼80% of all CpG sites containing 5-methylcytosine (5mC), a repressive mark associated with long-term gene silencing. The exceptions to such a globally hypermethylated state are CpG-rich DNA sequences called CpG islands (CGIs), which are mostly hypomethylated relative to the bulk genome. CGIs overlap promoters from the earliest vertebrates to humans, indicating a concerted evolutionary drive compatible with CGI retention. CGIs are characterised by DNA sequence features that include DNA hypomethylation, elevated CpG and GC content and the presence of transcription factor binding sites. These sequence characteristics are congruous with the recruitment of transcription factors and chromatin modifying enzymes, and transcriptional activation in general. CGIs colocalize with sites of transcriptional initiation in hypermethylated vertebrate genomes, however, a growing body of evidence indicates that CGIs might exert their gene regulatory function in other genomic contexts. In this review, we discuss the diverse regulatory features of CGIs, their functional readout, and the evolutionary implications associated with CGI retention in vertebrates and possibly in invertebrates.
Collapse
Affiliation(s)
- Allegra Angeloni
- Genomics and Epigenetics Division, Garvan Institute of Medical Research, Sydney, Australia
- School of Biotechnology and Biomolecular Sciences, Faculty of Science, UNSW, Sydney, Australia
| | - Ozren Bogdanovic
- Genomics and Epigenetics Division, Garvan Institute of Medical Research, Sydney, Australia
- School of Biotechnology and Biomolecular Sciences, Faculty of Science, UNSW, Sydney, Australia
| |
Collapse
|
35
|
Zupkovitz G, Kabiljo J, Kothmayer M, Schlick K, Schöfer C, Lagger S, Pusch O. Analysis of Methylation Dynamics Reveals a Tissue-Specific, Age-Dependent Decline in 5-Methylcytosine Within the Genome of the Vertebrate Aging Model Nothobranchius furzeri. Front Mol Biosci 2021; 8:627143. [PMID: 34222326 PMCID: PMC8242171 DOI: 10.3389/fmolb.2021.627143] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2020] [Accepted: 06/02/2021] [Indexed: 12/12/2022] Open
Abstract
Erosion of the epigenetic DNA methylation landscape is a widely recognized hallmark of aging. Emerging advances in high throughput sequencing techniques, in particular DNA methylation data analysis, have resulted in the establishment of precise human and murine age prediction tools. In vertebrates, methylation of cytosine at the C5 position of CpG dinucleotides is executed by DNA methyltransferases (DNMTs) whereas the process of enzymatic demethylation is highly dependent on the activity of the ten-eleven translocation methylcytosine dioxygenase (TET) family of enzymes. Here, we report the identification of the key players constituting the DNA methylation machinery in the short-lived teleost aging model Nothobranchius furzeri. We present a comprehensive spatio-temporal expression profile of the methylation-associated enzymes from embryogenesis into late adulthood, thereby covering the complete killifish life cycle. Data mining of the N. furzeri genome produced five dnmt gene family orthologues corresponding to the mammalian DNMTs (DNMT1, 2, 3A, and 3B). Comparable to other teleost species, N. furzeri harbors multiple genomic copies of the de novo DNA methylation subfamily. A related search for the DNMT1 recruitment factor UHRF1 and TET family members resulted in the identification of N. furzeri uhrf1, tet1, tet2, and tet3. Phylogenetic analysis revealed high cross-species similarity on the amino acid level of all individual dnmts, tets, and uhrf1, emphasizing a high degree of functional conservation. During early killifish development all analyzed dnmts and tets showed a similar expression profile characterized by a strong increase in transcript levels after fertilization, peaking either at embryonic day 6 or at the black eye stage of embryonic development. In adult N. furzeri, DNA methylation regulating enzymes showed a ubiquitous tissue distribution. Specifically, we observed an age-dependent downregulation of dnmts, and to some extent uhrf1, which correlated with a significant decrease in global DNA methylation levels in the aging killifish liver and muscle. The age-dependent DNA methylation profile and spatio-temporal expression characteristics of its enzymatic machinery reported here may serve as an essential platform for the identification of an epigenetic aging clock in the new vertebrate model system N. furzeri.
Collapse
Affiliation(s)
- Gordin Zupkovitz
- Center for Anatomy and Cell Biology, Medical University of Vienna, Vienna, Austria.,Department of Life Science Engineering, University of Applied Sciences Technikum Wien, Vienna, Austria.,City of Vienna Competence Team Aging Tissue, Vienna, Austria
| | - Julijan Kabiljo
- Center for Anatomy and Cell Biology, Medical University of Vienna, Vienna, Austria.,Department of General Surgery, Comprehensive Cancer Center Vienna, Medical University of Vienna, Vienna, Austria
| | - Michael Kothmayer
- Center for Anatomy and Cell Biology, Medical University of Vienna, Vienna, Austria
| | - Katharina Schlick
- Center for Anatomy and Cell Biology, Medical University of Vienna, Vienna, Austria
| | - Christian Schöfer
- Center for Anatomy and Cell Biology, Medical University of Vienna, Vienna, Austria
| | - Sabine Lagger
- Unit of Laboratory Animal Pathology, University of Veterinary Medicine Vienna, Vienna, Austria
| | - Oliver Pusch
- Center for Anatomy and Cell Biology, Medical University of Vienna, Vienna, Austria
| |
Collapse
|
36
|
Pierron F, Lorioux S, Héroin D, Daffe G, Etcheverria B, Cachot J, Morin B, Dufour S, Gonzalez P. Transgenerational epigenetic sex determination: Environment experienced by female fish affects offspring sex ratio. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 277:116864. [PMID: 33714788 DOI: 10.1016/j.envpol.2021.116864] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/12/2020] [Revised: 02/22/2021] [Accepted: 02/27/2021] [Indexed: 06/12/2023]
Abstract
Sex determination is a complex process that can be influenced by environment in various taxa. Disturbed environments can affect population sex ratios and thus threaten their viability. Emerging evidences support a role of epigenetic mechanisms, notably DNA methylation, in environmental sex determination (ESD). In this work, using zebrafish as model and a transgenerational experiment comprising 4 successive generations, we report a strength link between the promotor methylation level of three genes in female gonads and population sex ratio. One generation of zebrafish was exposed throughout its lifetime to cadmium (Cd), a non-essential metal, at an environmentally relevant concentration. The subsequent generations were not exposed. At the first and the third generation a subset of individuals was exposed to an elevated temperature, a well-known masculinizing factor in zebrafish. While heat was associated to an increase in the methylation level of cyp19a1a gene and population masculinization, foxl2a/dmrt1 methylation levels appeared to be influenced by Cd and fish density leading to offspring feminization. Ancestral Cd exposure indeed led to a progressive feminization of the population over generations and affected the sex plastic response of zebrafish in response to heat. The effect of Cd on the methylation level of foxl2a was observed until the third generation, supporting potential transgenerational inheritance. Our results support (i) a key role of cyp19a1a methylation in SD in zebrafish in response to environmental cues and (ii) the fact that the environment experienced by parents, namely mothers in the present case, can affect their offspring sex ratio via environment-induced DNA methylation changes in gonads.
Collapse
Affiliation(s)
- Fabien Pierron
- Univ. Bordeaux, CNRS, EPOC, EPHE, UMR 5805, F-33600, Pessac, France.
| | - Sophie Lorioux
- Univ. Bordeaux, CNRS, EPOC, EPHE, UMR 5805, F-33600, Pessac, France
| | - Débora Héroin
- Univ. Bordeaux, CNRS, EPOC, EPHE, UMR 5805, F-33600, Pessac, France
| | - Guillemine Daffe
- Univ. Bordeaux, CNRS, INRAE, La Rochelle Univ., UMS 2567 POREA, F-33615, Pessac, France
| | | | - Jérôme Cachot
- Univ. Bordeaux, CNRS, EPOC, EPHE, UMR 5805, F-33600, Pessac, France
| | - Bénédicte Morin
- Univ. Bordeaux, CNRS, EPOC, EPHE, UMR 5805, F-33600, Pessac, France
| | - Sylvie Dufour
- Laboratory Biology of Aquatic Organisms and Ecosystems (BOREA), Muséum National D'Histoire Naturelle, CNRS, IRD, Sorbonne Université, Université de Caen Normandie, Université des Antilles, 75231, Paris Cedex, 05, France
| | - Patrice Gonzalez
- Univ. Bordeaux, CNRS, EPOC, EPHE, UMR 5805, F-33600, Pessac, France
| |
Collapse
|
37
|
DNA Methylation Reshapes Sex Development in Zebrafish. GENOMICS PROTEOMICS & BIOINFORMATICS 2021; 19:44-47. [PMID: 33713849 PMCID: PMC8498821 DOI: 10.1016/j.gpb.2021.01.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Accepted: 01/01/2021] [Indexed: 11/22/2022]
|
38
|
Ross SE, Hesselson D, Bogdanovic O. Developmental Accumulation of Gene Body and Transposon Non-CpG Methylation in the Zebrafish Brain. Front Cell Dev Biol 2021; 9:643603. [PMID: 33748137 PMCID: PMC7978034 DOI: 10.3389/fcell.2021.643603] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Accepted: 02/08/2021] [Indexed: 12/13/2022] Open
Abstract
DNA methylation predominantly occurs at CG dinucleotides in vertebrate genomes; however, non-CG methylation (mCH) is also detectable in vertebrate tissues, most notably in the nervous system. In mammals it is well established that mCH is targeted to CAC trinucleotides by DNMT3A during nervous system development where it is enriched in gene bodies and associated with transcriptional repression. Nevertheless, the conservation of developmental mCH accumulation and its deposition by DNMT3A is largely unexplored and has yet to be functionally demonstrated in other vertebrates. In this study, by analyzing DNA methylomes and transcriptomes of zebrafish brains, we identified enrichment of mCH at CAC trinucleotides (mCAC) at defined transposon motifs as well as in developmentally downregulated genes associated with developmental and neural functions. We further generated and analyzed DNA methylomes and transcriptomes of developing zebrafish larvae and demonstrated that, like in mammals, mCH accumulates during post-embryonic brain development. Finally, by employing CRISPR/Cas9 technology, we unraveled a conserved role for Dnmt3a enzymes in developmental mCAC deposition. Overall, this work demonstrates the evolutionary conservation of developmental mCH dynamics and highlights the potential of zebrafish as a model to study mCH regulation and function during normal and perturbed development.
Collapse
Affiliation(s)
- Samuel E Ross
- Genomics and Epigenetics Division, Garvan Institute of Medical Research, Sydney, NSW, Australia.,Faculty of Medicine, St Vincent's Clinical School, University of New South Wales, Sydney, NSW, Australia
| | - Daniel Hesselson
- Centenary Institute, The University of Sydney, Sydney, NSW, Australia.,Faculty of Medicine and Health, The University of Sydney, Sydney, NSW, Australia
| | - Ozren Bogdanovic
- Genomics and Epigenetics Division, Garvan Institute of Medical Research, Sydney, NSW, Australia.,School of Biotechnology and Biomolecular Sciences, University of New South Wales, Sydney, NSW, Australia
| |
Collapse
|
39
|
D'Orazio FM, Balwierz PJ, González AJ, Guo Y, Hernández-Rodríguez B, Wheatley L, Jasiulewicz A, Hadzhiev Y, Vaquerizas JM, Cairns B, Lenhard B, Müller F. Germ cell differentiation requires Tdrd7-dependent chromatin and transcriptome reprogramming marked by germ plasm relocalization. Dev Cell 2021; 56:641-656.e5. [PMID: 33651978 PMCID: PMC7957325 DOI: 10.1016/j.devcel.2021.02.007] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2020] [Revised: 10/25/2020] [Accepted: 02/03/2021] [Indexed: 02/09/2023]
Abstract
In many animal models, primordial germ cell (PGC) development depends on maternally deposited germ plasm, which prevents somatic cell fate. Here, we show that PGCs respond to regulatory information from the germ plasm in two distinct phases using two distinct mechanisms in zebrafish. We demonstrate that PGCs commence zygotic genome activation together with the somatic blastocysts with no demonstrable differences in transcriptional and chromatin opening. Unexpectedly, both PGC and somatic blastocysts activate germ-cell-specific genes, which are only stabilized in PGCs by cytoplasmic germ plasm determinants. Disaggregated perinuclear relocalization of germ plasm during PGC migration is regulated by the germ plasm determinant Tdrd7 and is coupled to dramatic divergence between PGC and somatic transcriptomes. This transcriptional divergence relies on PGC-specific cis-regulatory elements characterized by promoter-proximal distribution. We show that Tdrd7-dependent reconfiguration of chromatin accessibility is required for elaboration of PGC fate but not for PGC migration. No evidence for transcriptional activation delay in zebrafish PGCs Germ-plasm-associated post-transcriptional divergence during ZGA Epigenetic reprogramming marks onset of PGC migration Epigenetic reprogramming in PGCs relies on Tdrd7, coupled to germ plasm relocalization
Collapse
Affiliation(s)
- Fabio M D'Orazio
- Institute of Cancer and Genomics Sciences, Birmingham Centre for Genome Biology, College of Medical and Dental Sciences, University of Birmingham, Birmingham, UK; MRC London Institute of Medical Sciences and Faculty of Medicine, Imperial College, London, UK; Institute of Clinical Sciences, Faculty of Medicine, Imperial College, London, UK
| | - Piotr J Balwierz
- Institute of Cancer and Genomics Sciences, Birmingham Centre for Genome Biology, College of Medical and Dental Sciences, University of Birmingham, Birmingham, UK; MRC London Institute of Medical Sciences and Faculty of Medicine, Imperial College, London, UK; Institute of Clinical Sciences, Faculty of Medicine, Imperial College, London, UK
| | - Ada Jimenez González
- Institute of Cancer and Genomics Sciences, Birmingham Centre for Genome Biology, College of Medical and Dental Sciences, University of Birmingham, Birmingham, UK
| | - Yixuan Guo
- Department of Oncological Sciences and Huntsman Cancer Institute, Howard Hughes Medical Institute, University of Utah School of Medicine, Salt Lake City, UT, USA
| | | | - Lucy Wheatley
- Institute of Cancer and Genomics Sciences, Birmingham Centre for Genome Biology, College of Medical and Dental Sciences, University of Birmingham, Birmingham, UK
| | - Aleksandra Jasiulewicz
- Institute of Cancer and Genomics Sciences, Birmingham Centre for Genome Biology, College of Medical and Dental Sciences, University of Birmingham, Birmingham, UK
| | - Yavor Hadzhiev
- Institute of Cancer and Genomics Sciences, Birmingham Centre for Genome Biology, College of Medical and Dental Sciences, University of Birmingham, Birmingham, UK
| | - Juan M Vaquerizas
- MRC London Institute of Medical Sciences and Faculty of Medicine, Imperial College, London, UK; Max Planck Institute for Molecular Biomedicine, Roentgenstrasse 20, Muenster, Germany
| | - Bradley Cairns
- Department of Oncological Sciences and Huntsman Cancer Institute, Howard Hughes Medical Institute, University of Utah School of Medicine, Salt Lake City, UT, USA
| | - Boris Lenhard
- MRC London Institute of Medical Sciences and Faculty of Medicine, Imperial College, London, UK; Institute of Clinical Sciences, Faculty of Medicine, Imperial College, London, UK.
| | - Ferenc Müller
- Institute of Cancer and Genomics Sciences, Birmingham Centre for Genome Biology, College of Medical and Dental Sciences, University of Birmingham, Birmingham, UK.
| |
Collapse
|
40
|
The Role of DNA Methylation Reprogramming during Sex Determination and Transition in Zebrafish. GENOMICS PROTEOMICS & BIOINFORMATICS 2021; 19:48-63. [PMID: 33610791 PMCID: PMC8640932 DOI: 10.1016/j.gpb.2020.10.004] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Revised: 10/23/2020] [Accepted: 10/30/2020] [Indexed: 12/25/2022]
Abstract
DNA methylation is a prevalent epigenetic modification in vertebrates, and it has been shown to be involved the regulation of gene expression and embryo development. However, it remains unclear how DNA methylation regulates sexual development, especially in species without sex chromosomes. To determine this, we utilized zebrafish to investigate DNA methylation reprogramming during juvenile germ cell development and adult female-to-male sex transition. We reveal that primordial germ cells (PGCs) undergo significant DNA methylation reprogramming during germ cell development, and the methylome of PGCs is reset to an oocyte/ovary-like pattern at 9 days post fertilization (9 dpf). When DNA methyltransferase (DNMT) activity in juveniles was blocked after 9 dpf, the zebrafish developed into females. We also show that Tet3 is involved in PGC development. Notably, we find that DNA methylome reprogramming during adult zebrafish sex transition is similar to the reprogramming during the sex differentiation from 9 dpf PGCs to sperm. Furthermore, inhibiting DNMT activity can prevent the female-to-male sex transition, suggesting that methylation reprogramming is required for zebrafish sex transition. In summary, DNA methylation plays important roles in zebrafish germ cell development and sexual plasticity.
Collapse
|
41
|
Greenberg MVC. Get Out and Stay Out: New Insights Into DNA Methylation Reprogramming in Mammals. Front Cell Dev Biol 2021; 8:629068. [PMID: 33490089 PMCID: PMC7817772 DOI: 10.3389/fcell.2020.629068] [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: 11/13/2020] [Accepted: 12/09/2020] [Indexed: 12/14/2022] Open
Abstract
Vertebrate genomes are marked by notably high levels of 5-cytosine DNA methylation (5meC). The clearest function of DNA methylation among members of the subphylum is repression of potentially deleterious transposable elements (TEs). However, enrichment in the bodies of protein coding genes and pericentromeric heterochromatin indicate an important role for 5meC in those genomic compartments as well. Moreover, DNA methylation plays an important role in silencing of germline-specific genes. Impaired function of major components of DNA methylation machinery results in lethality in fish, amphibians and mammals. Despite such apparent importance, mammals exhibit a dramatic loss and regain of DNA methylation in early embryogenesis prior to implantation, and then again in the cells specified for the germline. In this minireview we will highlight recent studies that shine light on two major aspects of embryonic DNA methylation reprogramming: (1) The mechanism of DNA methylation loss after fertilization and (2) the protection of discrete loci from ectopic DNA methylation deposition during reestablishment. Finally, we will conclude with some extrapolations for the evolutionary underpinnings of such extraordinary events that seemingly put the genome under unnecessary risk during a particularly vulnerable window of development.
Collapse
Affiliation(s)
- Maxim V C Greenberg
- Centre National de la Recherche Scientifique, Institut Jacques Monod, Université de Paris, Paris, France
| |
Collapse
|
42
|
Abstract
5-Methylcytosine (5mC) is one of the most abundant and well-studied chemical DNA modifications of vertebrate genomes. 5mC plays an essential role in genome regulation including: silencing of retroelements, X chromosome inactivation, and heterochromatin stability. Furthermore, 5mC shapes the activity of cis-regulatory elements crucial for cell fate determination. TET enzymes can oxidize 5mC to form 5-hydroxymethylcytosine (5hmC), thereby adding an additional layer of complexity to the DNA methylation landscape dynamics. The advent of techniques enabling genome-wide 5hmC profiling provided critical insights into its genomic distribution, scope, and function. These methods include immunoprecipitation, chemical labeling and capture-based approaches, as well as single-nucleotide 5hmC profiling techniques such as TET-assisted bisulfite sequencing (TAB-seq) and APOBEC-coupled epigenetic sequencing (ACE-seq). Here we provide a detailed protocol for computational analysis required for the genomic alignment of TAB-seq and ACE-seq data, 5hmC calling, and statistical analysis.
Collapse
|
43
|
Yagound B, Remnant EJ, Buchmann G, Oldroyd BP. Intergenerational transfer of DNA methylation marks in the honey bee. Proc Natl Acad Sci U S A 2020; 117:32519-32527. [PMID: 33257552 PMCID: PMC7768778 DOI: 10.1073/pnas.2017094117] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
The evolutionary significance of epigenetic inheritance is controversial. While epigenetic marks such as DNA methylation can affect gene function and change in response to environmental conditions, their role as carriers of heritable information is often considered anecdotal. Indeed, near-complete DNA methylation reprogramming, as occurs during mammalian embryogenesis, is a major hindrance for the transmission of nongenetic information between generations. Yet it remains unclear how general DNA methylation reprogramming is across the tree of life. Here we investigate the existence of epigenetic inheritance in the honey bee. We studied whether fathers can transfer epigenetic information to their daughters through DNA methylation. We performed instrumental inseminations of queens, each with four different males, retaining half of each male's semen for whole genome bisulfite sequencing. We then compared the methylation profile of each father's somatic tissue and semen with the methylation profile of his daughters. We found that DNA methylation patterns were highly conserved between tissues and generations. There was a much greater similarity of methylomes within patrilines (i.e., father-daughter subfamilies) than between patrilines in each colony. Indeed, the samples' methylomes consistently clustered by patriline within colony. Samples from the same patriline had twice as many shared methylated sites and four times fewer differentially methylated regions compared to samples from different patrilines. Our findings indicate that there is no DNA methylation reprogramming in bees and, consequently, that DNA methylation marks are stably transferred between generations. This points to a greater evolutionary potential of the epigenome in invertebrates than there is in mammals.
Collapse
Affiliation(s)
- Boris Yagound
- Behaviour, Ecology and Evolution Laboratory, School of Life and Environmental Sciences, University of Sydney, Sydney, NSW 2006, Australia;
| | - Emily J Remnant
- Behaviour, Ecology and Evolution Laboratory, School of Life and Environmental Sciences, University of Sydney, Sydney, NSW 2006, Australia
| | - Gabriele Buchmann
- Behaviour, Ecology and Evolution Laboratory, School of Life and Environmental Sciences, University of Sydney, Sydney, NSW 2006, Australia
| | - Benjamin P Oldroyd
- Behaviour, Ecology and Evolution Laboratory, School of Life and Environmental Sciences, University of Sydney, Sydney, NSW 2006, Australia
- Wissenschaftskolleg zu Berlin, 14193 Berlin, Germany
| |
Collapse
|
44
|
Ross SE, Angeloni A, Geng FS, de Mendoza A, Bogdanovic O. Developmental remodelling of non-CG methylation at satellite DNA repeats. Nucleic Acids Res 2020; 48:12675-12688. [PMID: 33271598 PMCID: PMC7736785 DOI: 10.1093/nar/gkaa1135] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Revised: 11/03/2020] [Accepted: 11/06/2020] [Indexed: 12/15/2022] Open
Abstract
In vertebrates, DNA methylation predominantly occurs at CG dinucleotides however, widespread non-CG methylation (mCH) has been reported in mammalian embryonic stem cells and in the brain. In mammals, mCH is found at CAC trinucleotides in the nervous system, where it is associated with transcriptional repression, and at CAG trinucleotides in embryonic stem cells, where it positively correlates with transcription. Moreover, CAC methylation appears to be a conserved feature of adult vertebrate brains. Unlike any of those methylation signatures, here we describe a novel form of mCH that occurs in the TGCT context within zebrafish mosaic satellite repeats. TGCT methylation is inherited from both male and female gametes, remodelled during mid-blastula transition, and re-established during gastrulation in all embryonic layers. Moreover, we identify DNA methyltransferase 3ba (Dnmt3ba) as the primary enzyme responsible for the deposition of this mCH mark. Finally, we observe that TGCT-methylated repeats are specifically associated with H3K9me3-marked heterochromatin suggestive of a functional interplay between these two gene-regulatory marks. Altogether, this work provides insight into a novel form of vertebrate mCH and highlights the substrate diversity of vertebrate DNA methyltransferases.
Collapse
Affiliation(s)
- Samuel E Ross
- Genomics and Epigenetics Division, Garvan Institute of Medical Research, Sydney, New South Wales 2010, Australia
- St Vincent's Clinical School, Faculty of Medicine, University of New South Wales, Sydney, New South Wales 2010, Australia
| | - Allegra Angeloni
- Genomics and Epigenetics Division, Garvan Institute of Medical Research, Sydney, New South Wales 2010, Australia
- St Vincent's Clinical School, Faculty of Medicine, University of New South Wales, Sydney, New South Wales 2010, Australia
| | - Fan-Suo Geng
- Genomics and Epigenetics Division, Garvan Institute of Medical Research, Sydney, New South Wales 2010, Australia
- St Vincent's Clinical School, Faculty of Medicine, University of New South Wales, Sydney, New South Wales 2010, Australia
| | - Alex de Mendoza
- School of Biological and Chemical Sciences, Queen Mary University of London, London, E1 4NS, UK
| | - Ozren Bogdanovic
- Genomics and Epigenetics Division, Garvan Institute of Medical Research, Sydney, New South Wales 2010, Australia
- School of Biotechnology and Biomolecular Sciences, University of New South Wales, Sydney, New South Wales 2052, Australia
| |
Collapse
|
45
|
Song X, Wang X, Bhandari RK. Developmental abnormalities and epigenetic alterations in medaka (Oryzias latipes) embryos induced by triclosan exposure. CHEMOSPHERE 2020; 261:127613. [PMID: 32738708 DOI: 10.1016/j.chemosphere.2020.127613] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/03/2020] [Revised: 07/02/2020] [Accepted: 07/03/2020] [Indexed: 06/11/2023]
Abstract
Triclosan (TCS), an antibacterial and antifungal agent present in some consumer products, has been detected in the environment at varying concentrations. TCS exposure has been found to cause developmental abnormalities and endocrine disruption in various species of fish. It is not clearly understood whether TCS exposure causes epigenetic alterations in developing embryos and their germ cells. In the present study, we examined the effects of TCS exposure (0, 50, 100 and, 200 μg/L) on embryonic development and primordial germ cells (PGCs), which are precursors of sperm and eggs, in medaka (Oyzias latipes). Developmental TCS exposure from 8 h post-fertilization through 15 days post-fertilization (dpf) resulted in several developmental abnormalities, including enlarged yolk sac, decreased head trunk angle (HTA), and severe edema in the pericardial region. The male ratio increased in the 100 μg/L TCS exposure group, which was negatively correlated with the expression of cyp19ala (a gene encoding aromatase) and arα (androgen receptor alpha). Developmental 50 μg/L TCS exposure resulted in global hypomethylation in the whole body but not in the isolated PGCs. Expression of the gene encoding DNA methyltransferases (dnmt1 and dnmt3aa) was decreased by 50 μg/L TCS exposure both in the whole body and PGCs. TCS altered the expression of genes encoding enzymes involved in DNA methylation and demethylation in PGCs, suggesting epigenetic effects on germ cells. The present results demonstrate that the embryos exposed to the tested concentrations of TCS develop deformities during the early life stages and that the TCS within this range possesses endocrine disrupting properties potential enough to alter sex ratios of developing embryos.
Collapse
Affiliation(s)
- Xiaohong Song
- Department of Biology, University of North Carolina Greensboro, Greensboro, NC, 27412, USA; College of Environmental Science and Engineering, Guilin University of Technology, Guilin, 541004, China
| | - Xuegeng Wang
- Department of Biology, University of North Carolina Greensboro, Greensboro, NC, 27412, USA
| | - Ramji K Bhandari
- Department of Biology, University of North Carolina Greensboro, Greensboro, NC, 27412, USA.
| |
Collapse
|
46
|
Mulholland CB, Nishiyama A, Ryan J, Nakamura R, Yiğit M, Glück IM, Trummer C, Qin W, Bartoschek MD, Traube FR, Parsa E, Ugur E, Modic M, Acharya A, Stolz P, Ziegenhain C, Wierer M, Enard W, Carell T, Lamb DC, Takeda H, Nakanishi M, Bultmann S, Leonhardt H. Recent evolution of a TET-controlled and DPPA3/STELLA-driven pathway of passive DNA demethylation in mammals. Nat Commun 2020; 11:5972. [PMID: 33235224 PMCID: PMC7686362 DOI: 10.1038/s41467-020-19603-1] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2020] [Accepted: 10/22/2020] [Indexed: 12/12/2022] Open
Abstract
Genome-wide DNA demethylation is a unique feature of mammalian development and naïve pluripotent stem cells. Here, we describe a recently evolved pathway in which global hypomethylation is achieved by the coupling of active and passive demethylation. TET activity is required, albeit indirectly, for global demethylation, which mostly occurs at sites devoid of TET binding. Instead, TET-mediated active demethylation is locus-specific and necessary for activating a subset of genes, including the naïve pluripotency and germline marker Dppa3 (Stella, Pgc7). DPPA3 in turn drives large-scale passive demethylation by directly binding and displacing UHRF1 from chromatin, thereby inhibiting maintenance DNA methylation. Although unique to mammals, we show that DPPA3 alone is capable of inducing global DNA demethylation in non-mammalian species (Xenopus and medaka) despite their evolutionary divergence from mammals more than 300 million years ago. Our findings suggest that the evolution of Dppa3 facilitated the emergence of global DNA demethylation in mammals.
Collapse
Affiliation(s)
- Christopher B Mulholland
- Department of Biology II and Center for Integrated Protein Science Munich (CIPSM), Human Biology and BioImaging, Ludwig-Maximilians-Universität München, Planegg-Martinsried, Germany
| | - Atsuya Nishiyama
- Division of Cancer Cell Biology, The Institute of Medical Science, The University of Tokyo, 4-6-1 Shirokanedai, Minato-ku, Tokyo, 108-8639, Japan
| | - Joel Ryan
- Department of Biology II and Center for Integrated Protein Science Munich (CIPSM), Human Biology and BioImaging, Ludwig-Maximilians-Universität München, Planegg-Martinsried, Germany
| | - Ryohei Nakamura
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Merve Yiğit
- Department of Biology II and Center for Integrated Protein Science Munich (CIPSM), Human Biology and BioImaging, Ludwig-Maximilians-Universität München, Planegg-Martinsried, Germany
| | - Ivo M Glück
- Physical Chemistry, Department of Chemistry, Center for Nanoscience, Nanosystems Initiative Munich and Center for Integrated Protein Science Munich, Ludwig-Maximilians-Universität München, Munich, Germany
| | - Carina Trummer
- Department of Biology II and Center for Integrated Protein Science Munich (CIPSM), Human Biology and BioImaging, Ludwig-Maximilians-Universität München, Planegg-Martinsried, Germany
| | - Weihua Qin
- Department of Biology II and Center for Integrated Protein Science Munich (CIPSM), Human Biology and BioImaging, Ludwig-Maximilians-Universität München, Planegg-Martinsried, Germany
| | - Michael D Bartoschek
- Department of Biology II and Center for Integrated Protein Science Munich (CIPSM), Human Biology and BioImaging, Ludwig-Maximilians-Universität München, Planegg-Martinsried, Germany
| | - Franziska R Traube
- Center for Integrated Protein Science (CIPSM) at the Department of Chemistry, Ludwig-Maximilians-Universität München, Munich, Germany
| | - Edris Parsa
- Center for Integrated Protein Science (CIPSM) at the Department of Chemistry, Ludwig-Maximilians-Universität München, Munich, Germany
| | - Enes Ugur
- Department of Biology II and Center for Integrated Protein Science Munich (CIPSM), Human Biology and BioImaging, Ludwig-Maximilians-Universität München, Planegg-Martinsried, Germany
- Department of Proteomics and Signal Transduction, Max Planck Institute for Biochemistry, Am Klopferspitz 18, 82152, Martinsried, Germany
| | - Miha Modic
- The Francis Crick Institute and UCL Queen Square Institute of Neurology, London, UK
| | - Aishwarya Acharya
- Department of Biology II and Center for Integrated Protein Science Munich (CIPSM), Human Biology and BioImaging, Ludwig-Maximilians-Universität München, Planegg-Martinsried, Germany
| | - Paul Stolz
- Department of Biology II and Center for Integrated Protein Science Munich (CIPSM), Human Biology and BioImaging, Ludwig-Maximilians-Universität München, Planegg-Martinsried, Germany
| | - Christoph Ziegenhain
- Department of Biology II, Anthropology and Human Genomics, Ludwig-Maximilians-Universität München, Planegg-Martinsried, Germany
| | - Michael Wierer
- Department of Proteomics and Signal Transduction, Max Planck Institute for Biochemistry, Am Klopferspitz 18, 82152, Martinsried, Germany
| | - Wolfgang Enard
- Department of Biology II, Anthropology and Human Genomics, Ludwig-Maximilians-Universität München, Planegg-Martinsried, Germany
| | - Thomas Carell
- Center for Integrated Protein Science (CIPSM) at the Department of Chemistry, Ludwig-Maximilians-Universität München, Munich, Germany
| | - Don C Lamb
- Physical Chemistry, Department of Chemistry, Center for Nanoscience, Nanosystems Initiative Munich and Center for Integrated Protein Science Munich, Ludwig-Maximilians-Universität München, Munich, Germany
| | - Hiroyuki Takeda
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Makoto Nakanishi
- Division of Cancer Cell Biology, The Institute of Medical Science, The University of Tokyo, 4-6-1 Shirokanedai, Minato-ku, Tokyo, 108-8639, Japan
| | - Sebastian Bultmann
- Department of Biology II and Center for Integrated Protein Science Munich (CIPSM), Human Biology and BioImaging, Ludwig-Maximilians-Universität München, Planegg-Martinsried, Germany.
| | - Heinrich Leonhardt
- Department of Biology II and Center for Integrated Protein Science Munich (CIPSM), Human Biology and BioImaging, Ludwig-Maximilians-Universität München, Planegg-Martinsried, Germany.
| |
Collapse
|
47
|
Adrian-Kalchhauser I, Sultan SE, Shama LNS, Spence-Jones H, Tiso S, Keller Valsecchi CI, Weissing FJ. Understanding 'Non-genetic' Inheritance: Insights from Molecular-Evolutionary Crosstalk. Trends Ecol Evol 2020; 35:1078-1089. [PMID: 33036806 DOI: 10.1016/j.tree.2020.08.011] [Citation(s) in RCA: 56] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2020] [Revised: 08/17/2020] [Accepted: 08/20/2020] [Indexed: 12/23/2022]
Abstract
Understanding the evolutionary and ecological roles of 'non-genetic' inheritance (NGI) is daunting due to the complexity and diversity of epigenetic mechanisms. We draw on insights from molecular and evolutionary biology perspectives to identify three general features of 'non-genetic' inheritance systems: (i) they are functionally interdependent with, rather than separate from, DNA sequence; (ii) precise mechanisms vary phylogenetically and operationally; and (iii) epigenetic elements are probabilistic, interactive regulatory factors and not deterministic 'epialleles' with defined genomic locations and effects. We discuss each of these features and offer recommendations for future empirical and theoretical research that implements a unifying inherited gene regulation (IGR) approach to studies of 'non-genetic' inheritance.
Collapse
Affiliation(s)
- Irene Adrian-Kalchhauser
- Centre for Fish and Wildlife Health, Department for Infectious Diseases and Pathobiology, Vetsuisse Faculty, University of Bern, Länggassstrasse 122, 3012 Bern, Switzerland.
| | - Sonia E Sultan
- Biology Department, Wesleyan University, Middletown, CT 06459, USA
| | - Lisa N S Shama
- Coastal Ecology Section, Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Wadden Sea Station Sylt, Hafenstrasse 43, 25992 List, Germany
| | - Helen Spence-Jones
- Centre for Biological Diversity, School of Biology, University of St Andrews, St. Andrews, UK
| | - Stefano Tiso
- Institute of Molecular Biology (IMB), Ackermannweg 4, 55128 Mainz, Germany
| | | | - Franz J Weissing
- Groningen Institute for Evolutionary Life Sciences, University of Groningen, Nijenborgh 7, 9747, AG, Groningen, The Netherlands
| |
Collapse
|
48
|
Chang CT, Lee YH, HuangFu WC, Liu IH. Cell-intrinsic Fgf signaling contributes to primordial germ cell homing in zebrafish. Theriogenology 2020; 158:424-431. [PMID: 33039926 DOI: 10.1016/j.theriogenology.2020.09.037] [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: 07/23/2020] [Revised: 09/26/2020] [Accepted: 09/28/2020] [Indexed: 12/24/2022]
Abstract
Primordial germ cells (PGCs) are specified before gastrulation and migrate toward the developing gonads. Previous in vitro studies have demonstrated a cell-intrinsic requirement of fibroblast growth factors (FGFs) by PGCs; however, no evidence suggests FGFs signal directly to PGCs in vivo. Here, using zebrafish as the animal model, we identified the mRNA expressions of Fgf receptors (Fgfrs) and determined the roles of Fgf signaling in migrating PGCs. To clarify the functions of Fgf signaling, we manipulated Fgf signaling specifically in PGCs using dominant-negative (dn) and constitutively-active (ca) Fgfrs and revealed a requirement of a basal Fgf signaling level for the robust arrival of PGCs. Repression of Fgf signaling in PGCs swayed the marginal positioning of PGCs as early as 6 h post-fertilization (6 hpf) and disrupted their arrival at the gonadal ridge at 24 hpf. On the other hand, the ectopic PGC phenotypes caused by the dn-Fgfrs could be alleviated by constitutive activation of Fgf signaling. In addition, we carefully ruled out the somatic effects in mosaic embryos by injecting RNA materials into one blastomere of the four- or eight-cell stage embryos. Injection of dn-Fgfrs into one of eight blastomeres hampered the arrival of only the treated PGCs, while the other PGCs remained unaffected. Furthermore, mosaic treatment of ca-Fgfrs rescued the ectopic rates of dn-Fgfr treated PGCs, while the other PGCs remained more ectopic within the same embryos. Interestingly, PGC-specific repression of Fgf signaling did not compromise the PGC number. To our knowledge, this is the first in vivo evidence to show that Fgf signaling plays a cell-intrinsic role in the migration of vertebrate PGCs.
Collapse
Affiliation(s)
- Chia-Teng Chang
- Department of Animal Science and Technology, National Taiwan University, Taipei, 106, Taiwan
| | - Yen-Hua Lee
- Department of Animal Science and Technology, National Taiwan University, Taipei, 106, Taiwan
| | - Wei-Chun HuangFu
- Graduate Institute of Cancer Biology and Drug Discovery, College of Medical Science and Technology, Taipei Medical University, Taipei, 11031, Taiwan
| | - I-Hsuan Liu
- Department of Animal Science and Technology, National Taiwan University, Taipei, 106, Taiwan; Research Center for Developmental Biology and Regenerative Medicine, National Taiwan University, Taipei, 106, Taiwan; School of Veterinary Medicine, National Taiwan University, Taipei, 106, Taiwan.
| |
Collapse
|
49
|
Navarro-Martín L, Martyniuk CJ, Mennigen JA. Comparative epigenetics in animal physiology: An emerging frontier. COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY D-GENOMICS & PROTEOMICS 2020; 36:100745. [PMID: 33126028 DOI: 10.1016/j.cbd.2020.100745] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Revised: 09/08/2020] [Accepted: 09/13/2020] [Indexed: 12/19/2022]
Abstract
The unprecedented access to annotated genomes now facilitates the investigation of the molecular basis of epigenetic phenomena in phenotypically diverse animals. In this critical review, we describe the roles of molecular epigenetic mechanisms in regulating mitotically and meiotically stable spatiotemporal gene expression, phenomena that provide the molecular foundation for the intra-, inter-, and trans-generational emergence of physiological phenotypes. By focusing principally on emerging comparative epigenetic roles of DNA-level and transcriptome-level epigenetic mark dynamics in the emergence of phenotypes, we highlight the relationship between evolutionary conservation and innovation of specific epigenetic pathways, and their interplay as a priority for future study. This comparative approach is expected to significantly advance our understanding of epigenetic phenomena, as animals show a diverse array of strategies to epigenetically modify physiological responses. Additionally, we review recent technological advances in the field of molecular epigenetics (single-cell epigenomics and transcriptomics and editing of epigenetic marks) in order to (1) investigate environmental and endogenous factor dependent epigenetic mark dynamics in an integrative manner; (2) functionally test the contribution of specific epigenetic marks for animal phenotypes via genome and transcript-editing tools. Finally, we describe advantages and limitations of emerging animal models, which under the Krogh principle, may be particularly useful in the advancement of comparative epigenomics and its potential translational applications in animal science, ecotoxicology, ecophysiology, climate change science and wild-life conservation, as well as organismal health.
Collapse
Affiliation(s)
- Laia Navarro-Martín
- Institute of Environmental Assessment and Water Research, IDAEA-CSIC, Barcelona, Catalunya 08034, Spain.
| | - Christopher J Martyniuk
- Department of Physiological Sciences and Center for Environmental and Human Toxicology, University of Florida Genetics Institute, Interdisciplinary Program in Biomedical Sciences Neuroscience, College of Veterinary Medicine, University of Florida, Gainesville, FL 32611, USA
| | - Jan A Mennigen
- Department of Biology, University of Ottawa, Ottawa, ON K1N6N5, Canada
| |
Collapse
|
50
|
Transgenerational inheritance of impaired larval T cell development in zebrafish. Nat Commun 2020; 11:4505. [PMID: 32908148 PMCID: PMC7481223 DOI: 10.1038/s41467-020-18289-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2019] [Accepted: 08/11/2020] [Indexed: 12/14/2022] Open
Abstract
Evidence for transgenerational inheritance of epigenetic information in vertebrates is scarce. Aberrant patterns of DNA methylation in gametes may set the stage for transmission into future generations. Here, we describe a viable hypomorphic allele of dnmt1 in zebrafish that causes widespread demethylation of CpG dinucleotides in sperm and somatic tissues. We find that homozygous mutants are essentially normal, with the exception of drastically impaired lymphopoiesis, affecting both larval and adult phases of T cell development. The phenotype of impaired larval (but not adult) T cell development is transmitted to subsequent generations by genotypically wildtype fish. We further find that about 200 differentially methylated regions in sperm DNA of transmitting and non-transmitting males, including hypermethylated sites associated with runx3 and rptor genes, whose reduced activities are associated with impaired larval T cell development. Our results indicate a particular sensitivity of larval T cell development to transgenerationally inherited epimutations. Evidence for transgenerational inheritance of epigenetic information in vertebrates is scarce. Here the authors report that homozygous dnmt1 mutant zebrafish are essentially normal, with the exception of impaired lymphopoiesis, with impaired larval (but not adult) T cell development being transmitted to subsequent generations by genotypically wildtype fish.
Collapse
|