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Hadzhiev Y, Wheatley L, Cooper L, Ansaloni F, Whalley C, Chen Z, Finaurini S, Gustincich S, Sanges R, Burgess S, Beggs A, Müller F. The miR-430 locus with extreme promoter density forms a transcription body during the minor wave of zygotic genome activation. Dev Cell 2023; 58:155-170.e8. [PMID: 36693321 PMCID: PMC9904021 DOI: 10.1016/j.devcel.2022.12.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2021] [Revised: 08/10/2022] [Accepted: 12/16/2022] [Indexed: 01/24/2023]
Abstract
In anamniote embryos, the major wave of zygotic genome activation starts during the mid-blastula transition. However, some genes escape global genome repression, are activated substantially earlier, and contribute to the minor wave of genome activation. The mechanisms underlying the minor wave of genome activation are little understood. We explored the genomic organization and cis-regulatory mechanisms of a transcription body, in which the minor wave of genome activation is first detected in zebrafish. We identified the miR-430 cluster as having excessive copy number and the highest density of Pol-II-transcribed promoters in the genome, and this is required for forming the transcription body. However, this transcription body is not essential for, nor does it encompasse, minor wave transcription globally. Instead, distinct minor-wave-specific promoter architecture suggests that promoter-autonomous mechanisms regulate the minor wave of genome activation. The minor-wave-specific features also suggest distinct transcription initiation mechanisms between the minor and major waves of genome activation.
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Affiliation(s)
- Yavor Hadzhiev
- Institute of Cancer and Genomics Sciences, Birmingham Centre for Genome Biology, College of Medical and Dental Sciences, University of Birmingham, Birmingham B15 2TT, UK
| | - Lucy Wheatley
- Institute of Cancer and Genomics Sciences, Birmingham Centre for Genome Biology, College of Medical and Dental Sciences, University of Birmingham, Birmingham B15 2TT, UK
| | - Ledean Cooper
- Institute of Cancer and Genomics Sciences, Birmingham Centre for Genome Biology, College of Medical and Dental Sciences, University of Birmingham, Birmingham B15 2TT, UK
| | - Federico Ansaloni
- Institute of Cancer and Genomics Sciences, Birmingham Centre for Genome Biology, College of Medical and Dental Sciences, University of Birmingham, Birmingham B15 2TT, UK; Area of Neuroscience, Scuola Internazionale Superiore di Studi Avanzati (SISSA), 34136 Trieste, Italy; Central RNA Laboratory, Istituto Italiano di Tecnologia (IIT), 16163 Genoa, Italy
| | - Celina Whalley
- Institute of Cancer and Genomics Sciences, Birmingham Centre for Genome Biology, College of Medical and Dental Sciences, University of Birmingham, Birmingham B15 2TT, UK
| | - Zhelin Chen
- South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China; Translational and Functional Genomics Branch, National Human Genome Research Institute, National Institutes of Health, Bethesda, MD 20892-2152, USA
| | - Sara Finaurini
- Area of Neuroscience, Scuola Internazionale Superiore di Studi Avanzati (SISSA), 34136 Trieste, Italy
| | - Stefano Gustincich
- Central RNA Laboratory, Istituto Italiano di Tecnologia (IIT), 16163 Genoa, Italy
| | - Remo Sanges
- Area of Neuroscience, Scuola Internazionale Superiore di Studi Avanzati (SISSA), 34136 Trieste, Italy; Central RNA Laboratory, Istituto Italiano di Tecnologia (IIT), 16163 Genoa, Italy
| | - Shawn Burgess
- Translational and Functional Genomics Branch, National Human Genome Research Institute, National Institutes of Health, Bethesda, MD 20892-2152, USA
| | - Andrew Beggs
- Institute of Cancer and Genomics Sciences, Birmingham Centre for Genome Biology, College of Medical and Dental Sciences, University of Birmingham, Birmingham B15 2TT, UK
| | - Ferenc Müller
- Institute of Cancer and Genomics Sciences, Birmingham Centre for Genome Biology, College of Medical and Dental Sciences, University of Birmingham, Birmingham B15 2TT, UK.
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2
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Zhang L, Yang Q, Xu W, Wu Z, Li D. Integrated Analysis of miR-430 on Steroidogenesis-Related Gene Expression of Larval Rice Field Eel Monopterus albus. Int J Mol Sci 2021; 22:6994. [PMID: 34209701 DOI: 10.3390/ijms22136994] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Revised: 06/17/2021] [Accepted: 06/25/2021] [Indexed: 01/15/2023] Open
Abstract
The present study aims to reveal the mechanism by which miR-430s regulate steroidogenesis in larval rice field eel Monopterus albus. To this end, M. albus embryos were respectively microinjected with miRNA-overexpressing mimics (agomir430a, agomir430b, and agomir430c) or miRNA-knockdown inhibitors (antagomir430a, antagomir430b, and antagomir430c). Transcriptome profiling of the larvae indicated that a total of more than 149 differentially expressed genes (DEGs) were identified among the eight treatments. Specifically, DEGs related to steroidogenesis, the GnRH signaling pathway, the erbB signaling pathway, the Wnt signaling pathway, and other pathways were characterized in the transcriptome. We found that steroidogenesis-related genes (hydroxysteroid 17-beta dehydrogenase 3 (17β-hsdb3), hydroxysteroid 17-beta dehydrogenase 7 (17β-hsdb7), hydroxysteroid 17-beta dehydrogenase 12 (17β-hsdb12), and cytochrome P450 family 19 subfamily a (cyp19a1b)) were significantly downregulated in miR-430 knockdown groups. The differential expressions of miR-430 in three gonads indicated different roles of three miR-430 (a, b, and c) isoforms in regulating steroidogenesis and sex differentiation. Mutation of the miR-430 sites reversed the downregulation of cytochrome P450 family 17 (cyp17), cyp19a1b, and forkhead box L2 (foxl2) reporter activities by miR-430, indicating that miR-430 directly interacted with cyp17, cyp19a1b, and foxl2 genes to inhibit their expressions. Combining these findings, we concluded that miR-430 regulated the steroidogenesis and the biosynthesis of steroid hormones by targeting cyp19a1b in larval M. albus. Our results provide a novel insight into steroidogenesis at the early stage of fish at the molecular level.
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Medina-Muñoz SG, Kushawah G, Castellano LA, Diez M, DeVore ML, Salazar MJB, Bazzini AA. Crosstalk between codon optimality and cis-regulatory elements dictates mRNA stability. Genome Biol 2021; 22:14. [PMID: 33402205 PMCID: PMC7783504 DOI: 10.1186/s13059-020-02251-5] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2020] [Accepted: 12/17/2020] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND The regulation of messenger RNA (mRNA) stability has a profound impact on gene expression dynamics during embryogenesis. For example, in animals, maternally deposited mRNAs are degraded after fertilization to enable new developmental trajectories. Regulatory sequences in 3' untranslated regions (3'UTRs) have long been considered the central determinants of mRNA stability. However, recent work indicates that the coding sequence also possesses regulatory information. Specifically, translation in cis impacts mRNA stability in a codon-dependent manner. However, the strength of this mechanism during embryogenesis, as well as its relationship with other known regulatory elements, such as microRNA, remains unclear. RESULTS Here, we show that codon composition is a major predictor of mRNA stability in the early embryo. We show that this mechanism works in combination with other cis-regulatory elements to dictate mRNA stability in zebrafish and Xenopus embryos as well as in mouse and human cells. Furthermore, we show that microRNA targeting efficacy can be affected by substantial enrichment of optimal (stabilizing) or non-optimal (destabilizing) codons. Lastly, we find that one microRNA, miR-430, antagonizes the stabilizing effect of optimal codons during early embryogenesis in zebrafish. CONCLUSIONS By integrating the contributions of different regulatory mechanisms, our work provides a framework for understanding how combinatorial control of mRNA stability shapes the gene expression landscape.
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Affiliation(s)
- Santiago Gerardo Medina-Muñoz
- Stowers Institute for Medical Research, 1000 E 50th St, Kansas City, MO, 64110, USA
- Present Address: National Laboratory of Genomics for Biodiversity (LANGEBIO), Unit of Advanced Genomics, 36824, Irapuato, Mexico
| | - Gopal Kushawah
- Stowers Institute for Medical Research, 1000 E 50th St, Kansas City, MO, 64110, USA
| | | | - Michay Diez
- Stowers Institute for Medical Research, 1000 E 50th St, Kansas City, MO, 64110, USA
| | - Michelle Lynn DeVore
- Stowers Institute for Medical Research, 1000 E 50th St, Kansas City, MO, 64110, USA
| | - María José Blanco Salazar
- Stowers Institute for Medical Research, 1000 E 50th St, Kansas City, MO, 64110, USA
- Present Address: Instituto de Fisiología Celular, Universidad Nacional Autónoma de México, 04510, México City, Mexico
| | - Ariel Alejandro Bazzini
- Stowers Institute for Medical Research, 1000 E 50th St, Kansas City, MO, 64110, USA.
- Department of Molecular and Integrative Physiology, University of Kansas Medical Center, 3901 Rainbow Blvd, Kansas City, KS, 66160, USA.
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Liu Y, Zhu Z, Ho IHT, Shi Y, Li J, Wang X, Chan MTV, Cheng CHK. Genetic Deletion of miR-430 Disrupts Maternal-Zygotic Transition and Embryonic Body Plan. Front Genet 2020; 11:853. [PMID: 32849832 PMCID: PMC7417628 DOI: 10.3389/fgene.2020.00853] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Accepted: 07/13/2020] [Indexed: 11/13/2022] Open
Abstract
MiR-430 is considered an important regulator during embryonic development, but genetic loss-of-function study is still lacking. Here we demonstrated that genetic deletion of the miR-430 cluster resulted in developmental defects in cell movement, germ layer specification, axis patterning and organ progenitor formation in zebrafish. Transcriptome analysis indicated that the maternally provided transcripts were not properly degraded whereas the zygotic genome expressed genes were not fully activated in the miR-430 mutants. We further found that a reciprocal regulatory loop exists between miR-430 and maternally provided transcripts: the maternally provided transcripts (Nanog, Dicer1, Dgcr8, and AGOs) are required for miR-430 biogenesis and function, whereas miR-430 is required for the clearance of these maternally provided transcripts. These data provide the first genetic evidence that miR-430 is required for maternal-zygotic transition and subsequent establishment of embryonic body plan.
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Affiliation(s)
- Yun Liu
- School of Biomedical Sciences, The Chinese University of Hong Kong, Hong Kong, China.,Shenzhen Zelong Biological Technology Limited Cooperation, Shenzhen, China
| | - Zeyao Zhu
- Department of Anatomy, Histology and Developmental Biology, School of Basic Medical Sciences, Shenzhen University, Shenzhen, China
| | - Idy H T Ho
- School of Biomedical Sciences, The Chinese University of Hong Kong, Hong Kong, China.,Department of Anesthesia and Intensive Care, Prince of Wales Hospital, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, China
| | - Yujian Shi
- School of Biomedical Sciences, The Chinese University of Hong Kong, Hong Kong, China
| | - Jianzhen Li
- College of Life Sciences, Northwest Normal University, Lanzhou, China
| | - Xia Wang
- Department of Anatomy, Histology and Developmental Biology, School of Basic Medical Sciences, Shenzhen University, Shenzhen, China
| | - Matthew T V Chan
- Department of Anesthesia and Intensive Care, Prince of Wales Hospital, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, China
| | - Christopher H K Cheng
- School of Biomedical Sciences, The Chinese University of Hong Kong, Hong Kong, China
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5
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Fischer P, Chen H, Pacho F, Rieder D, Kimmel RA, Meyer D. FoxH1 represses miR-430 during early embryonic development of zebrafish via non-canonical regulation. BMC Biol 2019; 17:61. [PMID: 31362746 PMCID: PMC6664792 DOI: 10.1186/s12915-019-0683-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2019] [Accepted: 07/19/2019] [Indexed: 12/19/2022] Open
Abstract
Background FoxH1 is a forkhead transcription factor with conserved key functions in vertebrate mesoderm induction and left-right patterning downstream of the TGF-beta/Nodal signaling pathway. Binding of the forkhead domain (FHD) of FoxH1 to a highly conserved proximal sequence motif was shown to regulate target gene expression. Results We identify the conserved microRNA-430 family (miR-430) as a novel target of FoxH1. miR-430 levels are increased in foxH1 mutants, resulting in a reduced expression of transcripts that are targeted by miR-430 for degradation. To determine the underlying mechanism of miR-430 repression, we performed chromatin immunoprecipitation studies and overexpression experiments with mutant as well as constitutive active and repressive forms of FoxH1. Our studies reveal a molecular interaction of FoxH1 with miR-430 loci independent of the FHD. Furthermore, we show that previously described mutant forms of FoxH1 that disrupt DNA binding or that lack the C-terminal Smad Interaction Domain (SID) dominantly interfere with miR-430 repression, but not with the regulation of previously described FoxH1 targets. Conclusions We were able to identify the distinct roles of protein domains of FoxH1 in the regulation process of miR-430. We provide evidence that the indirect repression of miR-430 loci depends on the connection to a distal repressive chromosome environment via a non-canonical mode. The widespread distribution of such non-canonical binding sites of FoxH1, found not only in our study, argues against a function restricted to regulating miR-430 and for a more global role of FoxH1 in chromatin folding. Electronic supplementary material The online version of this article (10.1186/s12915-019-0683-z) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Patrick Fischer
- Institute of Molecular Biology/CMBI, University of Innsbruck, Technikerstrasse 25, 6020, Innsbruck, Austria
| | - Hao Chen
- Institute of Molecular Biology/CMBI, University of Innsbruck, Technikerstrasse 25, 6020, Innsbruck, Austria
| | - Frederic Pacho
- Institute of Molecular Biology/CMBI, University of Innsbruck, Technikerstrasse 25, 6020, Innsbruck, Austria
| | - Dietmar Rieder
- Division of Bioinformatics, Biocenter, Innsbruck Medical University, Innrain 80, 6020, Innsbruck, Austria
| | - Robin A Kimmel
- Institute of Molecular Biology/CMBI, University of Innsbruck, Technikerstrasse 25, 6020, Innsbruck, Austria
| | - Dirk Meyer
- Institute of Molecular Biology/CMBI, University of Innsbruck, Technikerstrasse 25, 6020, Innsbruck, Austria.
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6
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Li WM, Chan CM, Miller AL, Lee CH. Dual Functional Roles of Molecular Beacon as a MicroRNA Detector and Inhibitor. J Biol Chem 2017; 292:3568-3580. [PMID: 28100783 PMCID: PMC5339743 DOI: 10.1074/jbc.m116.765776] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2016] [Revised: 01/04/2017] [Indexed: 12/23/2022] Open
Abstract
MicroRNAs are essential in many cellular processes. The ability to detect microRNAs is important for understanding its function and biogenesis. This study is aimed at using a molecular beacon to detect miR-430 in developing zebrafish embryos as a proof of principle. miR-430 is crucial for the clearance of maternal mRNA during maternal zygotic transition in embryonic development. Despite its known function, the temporal and spatial expression of miR-430 remains unclear. We used various imaging techniques, including laser scanning confocal microscopy, spinning disk, and lightsheet microscopy, to study the localization of miR-430 and any developmental defects possibly caused by the molecular beacon. Our results show that miR-430 is expressed early in development and is localized in distinct cytoplasmic granules where its target mRNA can be detected. We also show that the designed molecular beacon can inhibit the function of miR-430 and cause developmental defect in the brain, notochord, heart, and kidney, depending on the delivery site within the embryo, suggesting that miR-430 plays a diverse role in embryonic morphogenesis. When compared with morpholino, molecular beacon is 2 orders of magnitude more potent in inhibiting miR-430. Thus, our results reveal that in addition to being used as a valuable tool for the detection of microRNAs in vivo, molecular beacons can also be employed to inhibit microRNAs in a specific manner.
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Affiliation(s)
- Wai Ming Li
- From the Chemistry Program, University of Northern British Columbia, Prince George, British Columbia V2N 4Z9, Canada and
| | - Ching-Man Chan
- the Division of Life Science and Key State Laboratory for Molecular Neuroscience, Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong
| | - Andrew L Miller
- the Division of Life Science and Key State Laboratory for Molecular Neuroscience, Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong
| | - Chow H Lee
- From the Chemistry Program, University of Northern British Columbia, Prince George, British Columbia V2N 4Z9, Canada and
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7
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Abstract
A fundamental process occurring during early development is the zygotic genome activation, i.e., the initiation of transcription from the embryonic genome. Before that step, cellular processes in the developing embryo are dictated by transcripts produced by the maternal genome and accumulated in the egg during oogenesis. The maternal-to-zygotic transition (MZT) involves both the clearance of maternal RNAs and the initiation of transcription of the embryonic genome and is a tightly regulated process. In some species, decay of maternal transcripts may be facilitated by the activity of microRNAs. These small RNAs can act pleiotropically, blocking translation and inducing destabilization of hundreds of different maternal targets. In this review, we will discuss the role of microRNAs during MZT, focusing on Drosophila melanogaster and vertebrate models, Xenopus laevis, Zebrafish and mouse, in which such a mechanism has been more extensively studied.
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Affiliation(s)
- Alessandro Rosa
- Department of Biology and Biotechnology 'Charles Darwin', Sapienza University of Rome, Rome, 00185, Italy
- Laboratory of Molecular Vertebrate Embryology, The Rockefeller University, 1230 York Ave., New York, NY, 10065, USA
| | - Ali H Brivanlou
- Laboratory of Molecular Vertebrate Embryology, The Rockefeller University, 1230 York Ave., New York, NY, 10065, USA.
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8
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Affiliation(s)
- Hyun Yong Jin
- Department of Immunology and Microbial Science, The Scripps Research Institute La Jolla, CA, USA ; Kellogg School of Science and Technology, The Scripps Research Institute La Jolla, CA, USA
| | - Changchun Xiao
- Department of Immunology and Microbial Science, The Scripps Research Institute La Jolla, CA, USA
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9
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van Boxtel AL, Chesebro JE, Heliot C, Ramel MC, Stone RK, Hill CS. A Temporal Window for Signal Activation Dictates the Dimensions of a Nodal Signaling Domain. Dev Cell 2015; 35:175-85. [PMID: 26506307 PMCID: PMC4640439 DOI: 10.1016/j.devcel.2015.09.014] [Citation(s) in RCA: 78] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2015] [Revised: 08/11/2015] [Accepted: 09/23/2015] [Indexed: 11/22/2022]
Abstract
Morphogen signaling is critical for the growth and patterning of tissues in embryos and adults, but how morphogen signaling gradients are generated in tissues remains controversial. The morphogen Nodal was proposed to form a long-range signaling gradient via a reaction-diffusion system, on the basis of differential diffusion rates of Nodal and its antagonist Lefty. Here we use a specific zebrafish Nodal biosensor combined with immunofluorescence for phosphorylated Smad2 to demonstrate that endogenous Nodal is unlikely to diffuse over a long range. Instead, short-range Nodal signaling activation in a temporal window is sufficient to determine the dimensions of the Nodal signaling domain. The size of this temporal window is set by the differentially timed production of Nodal and Lefty, which arises mainly from repression of Lefty translation by the microRNA miR-430. Thus, temporal information is transformed into spatial information to define the dimensions of the Nodal signaling domain and, consequently, to specify mesendoderm.
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Affiliation(s)
- Antonius L van Boxtel
- Developmental Signalling, The Francis Crick Institute, Lincoln's Inn Fields Laboratory, 44 Lincoln's Inn Fields, London WC2A 3LY, UK
| | - John E Chesebro
- Developmental Signalling, The Francis Crick Institute, Lincoln's Inn Fields Laboratory, 44 Lincoln's Inn Fields, London WC2A 3LY, UK
| | - Claire Heliot
- Developmental Signalling, The Francis Crick Institute, Lincoln's Inn Fields Laboratory, 44 Lincoln's Inn Fields, London WC2A 3LY, UK
| | - Marie-Christine Ramel
- Developmental Signalling, The Francis Crick Institute, Lincoln's Inn Fields Laboratory, 44 Lincoln's Inn Fields, London WC2A 3LY, UK
| | - Richard K Stone
- Experimental Histopathology, The Francis Crick Institute, Lincoln's Inn Fields Laboratory, 44 Lincoln's Inn Fields, London WC2A 3LY, UK
| | - Caroline S Hill
- Developmental Signalling, The Francis Crick Institute, Lincoln's Inn Fields Laboratory, 44 Lincoln's Inn Fields, London WC2A 3LY, UK.
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10
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Wylie AD, Fleming JAGW, Whitener AE, Lekven AC. Post-transcriptional regulation of wnt8a is essential to zebrafish axis development. Dev Biol 2013; 386:53-63. [PMID: 24333179 DOI: 10.1016/j.ydbio.2013.12.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2013] [Revised: 11/11/2013] [Accepted: 12/03/2013] [Indexed: 12/15/2022]
Abstract
wnt8a Is essential for normal patterning during vertebrate embryonic development, and either gain or loss-of-function gene dysregulation results in severe axis malformations. The zebrafish wnt8a locus is structured such that transcripts may possess two regulatory 3' untranslated regions (UTRs), raising the possibility of post-transcriptional regulation as an important mode of wnt8a signaling control. To determine whether both UTRs contribute to post-transcriptional wnt8a gene regulation, each UTR (UTR1 and UTR2) was tested in transient and transgenic reporter assays. Both UTRs suppress EGFP reporter expression in cis, with UTR2 exhibiting a more pronounced effect. UTR2 contains a 6 base sequence necessary for UTR2 regulatory function that is complementary to the seed of the microRNA, miR-430. A target protector morpholino that overlaps the seed complement stabilizes both reporter mRNAs and wnt8a mRNAs, and produces phenotypic abnormalities consistent with wnt8a gain-of-function. In rescue assays, specific functions can be attributed to each of the two wnt8a proteins encoded by the locus. An interplay of wnt8a.1 and wnt8a.2 regulates neural and mesodermal patterning and morphogenesis as well as patterning between brain subdivisions. Thus, post-transcriptional control of wnt8a is essential to fine tune the balance of the signaling outputs of the complex wnt8a locus.
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Affiliation(s)
- Annika D Wylie
- Department of Biology, Texas A&M University, 3258 TAMU, College Station, TX 77843-3258, United States
| | - Jo-Ann G W Fleming
- Department of Biology, Texas A&M University, 3258 TAMU, College Station, TX 77843-3258, United States
| | - Amy E Whitener
- Department of Biology, Texas A&M University, 3258 TAMU, College Station, TX 77843-3258, United States
| | - Arne C Lekven
- Department of Biology, Texas A&M University, 3258 TAMU, College Station, TX 77843-3258, United States.
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11
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Mei J, Yue HM, Li Z, Chen B, Zhong JX, Dan C, Zhou L, Gui JF. C1q-like factor, a target of miR-430, regulates primordial germ cell development in early embryos of Carassius auratus. Int J Biol Sci 2013; 10:15-24. [PMID: 24391447 PMCID: PMC3879587 DOI: 10.7150/ijbs.7490] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2013] [Accepted: 11/13/2013] [Indexed: 02/05/2023] Open
Abstract
C1q-like is a significant maternal factor of TNF/C1q super-family, and the abundant protein has been observed in both mature eggs of Carassius auratus and Carassius auratus gibelio, but its biological function in early embryo development has remained unclear. In this study, we firstly revealed a high level of maternal C1q-like transcript existence only in mature eggs of Carassius auratus, whereas no any maternal C1q-like transcript was observed in that of Carassius auratus gibelio. During embryonic development, the C1q-like zygotic expression begins around cardiopalmus stage in embryos of both Carassius auratus and Carassius auratus gibelio. Then, we examined the biological role of C1q-like by morpholino-mediated knockdown in early embryo development. Knockdown of CaOC1q resulted in a significant reduction of primordial germ cells (PGCs) in Carassius auratus, as shown by whole mount in situ hybridization with vasa-specific RNA probe, fluorescence immunostaining of vasa protein, and GFP imaging of the GFP-nanos1-3'UTR mRNA reporter. In vitro and in vivo evidence indicated that a microRNA, miR-430 could repress the C1q-like expression and PGC development. These data suggest that C1q-like should be a direct target of miR-430 and play an essential role in PGC development of Carassius auratus.
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Affiliation(s)
- Jie Mei
- 1. College of Fisheries, Key Laboratory of Freshwater Animal Breeding, Ministry of Agriculture, Freshwater Aquaculture Collaborative Innovation Center of Hubei Province, Huazhong Agricultural University, Wuhan, 430070, China
| | - Hua-Mei Yue
- 2. State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Science, Wuhan 430072, China
| | - Zhi Li
- 2. State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Science, Wuhan 430072, China
| | - Bo Chen
- 2. State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Science, Wuhan 430072, China
| | - Jian-Xiang Zhong
- 2. State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Science, Wuhan 430072, China
| | - Cheng Dan
- 2. State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Science, Wuhan 430072, China
| | - Li Zhou
- 2. State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Science, Wuhan 430072, China
| | - Jian-Fang Gui
- 1. College of Fisheries, Key Laboratory of Freshwater Animal Breeding, Ministry of Agriculture, Freshwater Aquaculture Collaborative Innovation Center of Hubei Province, Huazhong Agricultural University, Wuhan, 430070, China. ; 2. State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Science, Wuhan 430072, China
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