Ethical Reflections on the Conditions Surrounding the First Genome-Edited Babies [Version 2; Peer Review: 2 Approved]

Total Page:16

File Type:pdf, Size:1020Kb

Ethical Reflections on the Conditions Surrounding the First Genome-Edited Babies [Version 2; Peer Review: 2 Approved] Wellcome Open Research 2021, 5:216 Last updated: 04 AUG 2021 OPEN LETTER Making sense of it all: Ethical reflections on the conditions surrounding the first genome-edited babies [version 2; peer review: 2 approved] Qi Chen1, Yonghui Ma 1, Markus Labude2, G Owen Schaefer2, Vicki Xafis 2, Peter Mills 3 1Centre for Bioethics, Medical School, Xiamen University, Xiamen, 361102, China 2Centre for Biomedical Ethics, National University of Singapore, Singapore, 117597, Singapore 3Nuffield Council on Bioethics, London, WC1B 3JS, UK v2 First published: 16 Sep 2020, 5:216 Open Peer Review https://doi.org/10.12688/wellcomeopenres.16295.1 Latest published: 23 Jun 2021, 5:216 https://doi.org/10.12688/wellcomeopenres.16295.2 Reviewer Status Invited Reviewers Abstract In November 2018 the birth of the first genome-edited human beings 1 2 was announced by Chinese scientist, He Jiankui. The ensuing ethical controversy, institutional investigations and legal proceedings led to version 2 the revision of standards, rules and procedures at many levels. (revision) report report Arguably, however, these developments have not fundamentally 23 Jun 2021 changed the conditions or the culture that nourished He Jiankui’s vaulting ambition in the first place and enabled it to find expression. version 1 In this paper we explore the clinical, regulatory and societal 16 Sep 2020 report report circumstances of the ‘gene-edited baby’ case, the political, cultural and economic conditions that created a radical and dangerous climate for biotechnology innovation, and the responsibilities of the international 1. Giulia Cavaliere , King's College London, research community, many of whose members were apprised of Dr London, UK He’s intentions. The aim is not to heap anathemas on the heads of implicated individuals but to draw attention to the need for different 2. Song Lingqiao, McGill University, Montreal, communities (researchers, authorities and domestic publics) to play a Canada part actively in the governance of biomedical innovation and for research to be bridled by human values. Yann Joly , McGill University, Montreal, Keywords Canada He Jiankui, Human germline genome editing, CRISPR-Cas9, HIV, Gene Any reports and responses or comments on the editing, Twins/genetics, Research ethics, Research governance article can be found at the end of the article. This article is included in the GFBR: Genome editing for human benefit: ethics, engagement and governance collection. Page 1 of 20 Wellcome Open Research 2021, 5:216 Last updated: 04 AUG 2021 Corresponding author: Peter Mills ([email protected]) Author roles: Chen Q: Conceptualization, Writing – Original Draft Preparation, Writing – Review & Editing; Ma Y: Conceptualization, Writing – Original Draft Preparation, Writing – Review & Editing; Labude M: Conceptualization, Writing – Original Draft Preparation, Writing – Review & Editing; Schaefer GO: Conceptualization, Writing – Original Draft Preparation, Writing – Review & Editing; Xafis V: Conceptualization, Writing – Original Draft Preparation, Writing – Review & Editing; Mills P: Conceptualization, Writing – Original Draft Preparation, Writing – Review & Editing Competing interests: No competing interests were disclosed. Grant information: This work was supported by the Wellcome Trust through funding to the Global Forum on Bioethics in Research (GFBR). GFBR funding is provided by The Wellcome Trust, the Bill & Melinda Gates Foundation [OPP1151904], the National Institutes of Health and the UK Medical Research Council. Additionally, YM received funding from the President's Foundation project 2019 of Xiamen University on ‘Ethical and governance considerations in human genome editing’. This work was also supported by the Singapore Ministry of Health’s National Medical Research Council under its NMRC Funding Initiative grant (NMRC/CBME/2016) in relation to the involvement of OS, VX, and ML. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript. Copyright: © 2021 Chen Q et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. How to cite this article: Chen Q, Ma Y, Labude M et al. Making sense of it all: Ethical reflections on the conditions surrounding the first genome-edited babies [version 2; peer review: 2 approved] Wellcome Open Research 2021, 5:216 https://doi.org/10.12688/wellcomeopenres.16295.2 First published: 16 Sep 2020, 5:216 https://doi.org/10.12688/wellcomeopenres.16295.1 Page 2 of 20 Wellcome Open Research 2021, 5:216 Last updated: 04 AUG 2021 preferences; the perceived policy vacuum in the wake of REVISED Amendments from Version 1 technological developments in genome editing (in particular the rapid elaboration and diffusion of CRISPR-Cas9 tech- This version responds to the helpful comments of reviewers on the initial version. In particular: the aims of the paper are niques) and the significance of public opinion in this context; clarified; material in the section on ‘Clinical, regulatory and the complex motivations and incentives that bear upon ambitious societal conditions’ is clarified; legal information is added to biotechnology entrepreneurialism in contemporary China and the section on ‘Political, cultural and economic conditions’; elsewhere; the integrity, role and responsibilities of scientists clarifications have been made to improve the balance of the section on ‘silence and complicity’; editorial improvements and the international scientific community; the traction of global have been made and additional references have been supplied bioethical norms and missteps in cross-cultural understanding; throughout. Additionally, minor amendments have been and wider questions for society about the role of biomedical made to the order in which the authors are listed and the technologies in the collective response to societal challenges, acknowledgements. such as the prevalence of HIV and genetic disease. In reflecting Any further responses from the reviewers can be found at on the – so far as we know – singular case of Dr He and his the end of the article collaborators our interest is not forensic but normative: our aims are to begin to understand whether this case, though singular, should truly be seen as exceptional, to what extent the conditions that appear to have been conducive to Dr He’s Disclaimer interventions may still prevail, and what needs to change in the The views expressed in this article are those of the author(s). light of the incident if we should wish to forestall a recurrence. Publication in Wellcome Open Research does not imply Due to the broad range of issues considered, this paper cannot endorsement by Wellcome. provide the in-depth analysis these issues deserve; rather it is intended as a springboard for further analyses. Introduction The facts of the case, though they were initially met with incre- Clinical, regulatory and societal conditions dulity, are now more or less established: Dr He Jiankui, a Dr He originally announced the birth of genome edited twin biotechnology entrepreneur and researcher at the Southern girls on YouTube on 25 November 2018. Subsequently, at University of Science and Technology in Shenzhen, China, the Second International Summit on Human Genome Editing recruited a number of couples to a project that led to the birth, held in Hong Kong, he revealed that another woman was in in 2018, of the first babies from embryos that had their DNA the early stages of pregnancy with a genetically modified deliberately modified using the genome editing tool CRISPR- embryo. Dr He’s claims not only caused shock and controversy Cas91. The objective of these procedures was not connected in the scientific community and the wider society, but also with the avoidance of an imminent risk to the future children prompted urgent reflection on the application and regulation of but to confer to them the advantage of inherent resistance to emerging technologies in China and elsewhere4. The actions HIV, with which the male partner of each couple was infected. of Dr He and his associates posed numerous ethical challenges These treatments, described at the Second International Sum- not just to China but also to the wider world. At the same time, mit on Human Genome Editing in Hong Kong in November this event prompted the further development of ethical norms 2018, caused immediate consternation among scientists and governing genome editing and stimulated public discussion. We the public, provoked numerous statements of condemnation review this event from three aspects – clinical, regulatory and from scientific and ethical bodies, and led to a number of societal – before proceeding to discuss its wider implications academic, institutional and official investigations around the for Chinese and international research. world, including a court case that ended with the conviction of Dr He and two associates in December 2019 for illegally Clinical Research practising medicine2,3. Three important features of ethical medical research are that researchers should (1) seek the informed consent of their patients Of the many questions that the ‘gene-edited baby case’ before carrying out procedures, (2) fulfil a duty of care not provoked, among the most perplexing must be: given the to carry out procedures where the risks cannot be justified in already salient and near-universal opposition
Recommended publications
  • Secretariat of the CBD Technical Series No. 82 Convention on Biological Diversity
    Secretariat of the CBD Technical Series No. 82 Convention on Biological Diversity 82 SYNTHETIC BIOLOGY FOREWORD To be added by SCBD at a later stage. 1 BACKGROUND 2 In decision X/13, the Conference of the Parties invited Parties, other Governments and relevant 3 organizations to submit information on, inter alia, synthetic biology for consideration by the Subsidiary 4 Body on Scientific, Technical and Technological Advice (SBSTTA), in accordance with the procedures 5 outlined in decision IX/29, while applying the precautionary approach to the field release of synthetic 6 life, cell or genome into the environment. 7 Following the consideration of information on synthetic biology during the sixteenth meeting of the 8 SBSTTA, the Conference of the Parties, in decision XI/11, noting the need to consider the potential 9 positive and negative impacts of components, organisms and products resulting from synthetic biology 10 techniques on the conservation and sustainable use of biodiversity, requested the Executive Secretary 11 to invite the submission of additional relevant information on this matter in a compiled and synthesised 12 manner. The Secretariat was also requested to consider possible gaps and overlaps with the applicable 13 provisions of the Convention, its Protocols and other relevant agreements. A synthesis of this 14 information was thus prepared, peer-reviewed and subsequently considered by the eighteenth meeting 15 of the SBSTTA. The documents were then further revised on the basis of comments from the SBSTTA 16 and peer review process, and submitted for consideration by the twelfth meeting of the Conference of 17 the Parties to the Convention on Biological Diversity.
    [Show full text]
  • Nuclear DNA Content, Chromatin Organization and Chromosome Banding in Brown and Yellow Seeds of Dasypyrum Villosum (L.) P
    Heredity 72 (1994) 365—373 Received 7 September 1993 Genetical Society of Great Britain Nuclear DNA content, chromatin organization and chromosome banding in brown and yellow seeds of Dasypyrum villosum (L.) P. Candargy R. CREMONINI*, N. COLONNAI-, A. STEFANIt, I. GALASSO4 & D. PIGNONE4 Dipartimento di Scienze Botaniche, Università di Pisa, Via L. Ghini 5, 56126 Pisa, tScuo/a Super/ore Studi Universitari e Perfezionamento 'S. Anna Via Carducci 40, 56127 Pisa, and Istituto del Germoplasma, CNR, Via Amendola 165, 70123 Ban, Italy Bandingpatterns of metaphase chromosomes and nuclear DNA content in root meristematic cells of yellow and brown seeds of Dasypyrum villosum were determined. Microdensitometric evaluation of nuclear absorptions at different thresholds of optical density after Feulgen reaction indicated the organization of the chromatin in interphase nuclei, and allowed an evaluation of the amount of heterochromatin. These results were compared with those obtained after the application of banding techniques. Keywords:chromatinorganization, chromosome banding, Dasypyrum villosum, fluorochromes, kernels. evident morphological differences; both of them are Introduction able to produce ears with yellow and brown caryopses Manyspecies closely related to Triticum are known to (Stefani & Onnis, 1983). have agronomic characters that make them interesting A different behaviour of seed germination and for wheat improvement, and many studies have been viability during ripening and ageing (Meletti & Onnis, carried out on the possibility of introducing alien genes 1961; Stefani & Onnis, 1983; De Gara et al., 1991) into cultivated wheats (Knott, 1987). and a different duration of the mitotic cycle (Innocenti The genus Dasypyrum includes two Mediterranean & Bitonti, 1983) have been reported for the two types wild species: an annual outcrossing diploid, Dasypyrum of caryopses.
    [Show full text]
  • Chromatin Insulators and Topological Domains: Adding New Dimensions to 3D Genome Architecture
    Genes 2015, 6, 790-811; doi:10.3390/genes6030790 OPEN ACCESS genes ISSN 2073-4425 www.mdpi.com/journal/genes Review Chromatin Insulators and Topological Domains: Adding New Dimensions to 3D Genome Architecture Navneet K. Matharu 1,* and Sajad H. Ahanger 2,* 1 Department of Bioengineering and Therapeutic Sciences, Institute for Human Genetics, University of California San Francisco, San Francisco, CA 94143, USA 2 Department of Ophthalmology, Lab for Retinal Cell Biology, University of Zurich, Wagistrasse 14, Zurich 8952, Switzerland * Authors to whom correspondence should be addressed; E-Mails: [email protected] (N.K.M.); [email protected] (S.H.A.). Academic Editor: Jessica Tyler Received: 8 June 2015 / Accepted: 20 August 2015 / Published: 1 September 2015 Abstract: The spatial organization of metazoan genomes has a direct influence on fundamental nuclear processes that include transcription, replication, and DNA repair. It is imperative to understand the mechanisms that shape the 3D organization of the eukaryotic genomes. Chromatin insulators have emerged as one of the central components of the genome organization tool-kit across species. Recent advancements in chromatin conformation capture technologies have provided important insights into the architectural role of insulators in genomic structuring. Insulators are involved in 3D genome organization at multiple spatial scales and are important for dynamic reorganization of chromatin structure during reprogramming and differentiation. In this review, we will discuss the classical view and our renewed understanding of insulators as global genome organizers. We will also discuss the plasticity of chromatin structure and its re-organization during pluripotency and differentiation and in situations of cellular stress.
    [Show full text]
  • Repetitive Elements in Humans
    International Journal of Molecular Sciences Review Repetitive Elements in Humans Thomas Liehr Institute of Human Genetics, Jena University Hospital, Friedrich Schiller University, Am Klinikum 1, D-07747 Jena, Germany; [email protected] Abstract: Repetitive DNA in humans is still widely considered to be meaningless, and variations within this part of the genome are generally considered to be harmless to the carrier. In contrast, for euchromatic variation, one becomes more careful in classifying inter-individual differences as meaningless and rather tends to see them as possible influencers of the so-called ‘genetic background’, being able to at least potentially influence disease susceptibilities. Here, the known ‘bad boys’ among repetitive DNAs are reviewed. Variable numbers of tandem repeats (VNTRs = micro- and minisatellites), small-scale repetitive elements (SSREs) and even chromosomal heteromorphisms (CHs) may therefore have direct or indirect influences on human diseases and susceptibilities. Summarizing this specific aspect here for the first time should contribute to stimulating more research on human repetitive DNA. It should also become clear that these kinds of studies must be done at all available levels of resolution, i.e., from the base pair to chromosomal level and, importantly, the epigenetic level, as well. Keywords: variable numbers of tandem repeats (VNTRs); microsatellites; minisatellites; small-scale repetitive elements (SSREs); chromosomal heteromorphisms (CHs); higher-order repeat (HOR); retroviral DNA 1. Introduction Citation: Liehr, T. Repetitive In humans, like in other higher species, the genome of one individual never looks 100% Elements in Humans. Int. J. Mol. Sci. alike to another one [1], even among those of the same gender or between monozygotic 2021, 22, 2072.
    [Show full text]
  • Enabling the Rise of a CRISPR World
    The CRISPR Journal Volume 1, Number 3, 2018 Mary Ann Liebert, Inc. DOI: 10.1089/crispr.2018.0022 PERSPECTIVE Enabling the Rise of a CRISPR World Caroline M. LaManna1 and Rodolphe Barrangou2 Abstract CRISPR technology has dramatically changed scientists’ ability to conduct research in medicine, biotechnology, and agriculture through faster, more efficient genome editing. A key driver of the technology’s adoption is the easy, fast, and inexpensive access to vectors and the resulting next-generation tools by the nonprofit plasmid repository Addgene. Since 2013, Addgene has shipped over 100,000 CRISPR plasmids to more than 75 countries worldwide. This pipeline of new technologies is enabling cutting-edge research to address the grand challenges of mankind. Introduction scientists experienced sharing plasmids with one another. The past decade has witnessed the rise of CRISPR* to The repository created a one-stop shop where scientists scientific stardom, starting from the discovery of its could deposit their frequently requested plasmids for role in adaptive immunity in bacteria1,2 to its develop- storage and worldwide distribution—Addgene handled ment into a potent and accessible tool in genetics, driving quality control, material transfer agreements, request advances in genome editing across medicine, biotechnol- tracking, and shipping logistics. As a self-sustaining non- ogy, and agriculture.3,4 Scientifically, there are many profit, depositing plasmids is free for scientists and a features that have enabled the rapid adoption of CRISPR- nominal fee is charged for requests, allowing for mainte- based technologies, encompassing programmability, nance and growth of the repository without reliance on specificity, efficiency, precision, scalability, and mul- grants or external funding.
    [Show full text]
  • CRISPR-2019-0033-Ver9-Locke 2P 27..31
    The CRISPR Journal Volume 3, Number 1, 2020 Mary Ann Liebert, Inc. DOI: 10.1089/crispr.2019.0033 PERSPECTIVE The Promise of CRISPR for Human Germline Editing and the Perils of ‘‘Playing God’’ Larry G. Locke* Abstract In the midst of the media and professional exuberance regarding the potential benefits of CRISPR technology, voices of criticism and caution have also arisen. One of the thorniest such cautions has been the common ob- jection that CRISPR allows bioscientists to ‘‘play God,’’ particularly when it comes to potentially editing the human germline. Many in the biotechnology field are unsure how to address this concern. What does it mean, partic- ularly for bioscientists who may not have any rational or rhetorical categories for God? In this article, I explore possible meanings of ‘‘playing God’’ and the arguments for how those meanings might be applied in the utili- zation of CRISPR technology for human germline editing. I then test the validity of those arguments and explore potential counterarguments. Finally, I discuss how members of the bioscience community might respond to the objection of ‘‘playing God’’ and contribute to that dialogue in ways that could impact the future of CRISPR development and applications. Introduction tributed to its rapid adoption and its eclipse of earlier Unless you were around to witness the development of gene-editing technologies.7 immunology by Louis Pasteur in the 1870s, it is hard Despite its potential, not all of the voices surrounding to imagine a biotechnology that has generated more ac- the development of CRISPR technology have been posi- clamation than CRISPR.
    [Show full text]
  • Effects on Transcription and Nuclear Organization
    30 Oct 2001 7:3 AR AR144-08.tex AR144-08.SGM ARv2(2001/05/10) P1: GJC Annu. Rev. Genet. 2001. 35:193–208 Copyright c 2001 by Annual Reviews. All rights reserved CHROMATIN INSULATORS AND BOUNDARIES: Effects on Transcription and Nuclear Organization Tatiana I. Gerasimova and Victor G. Corces Department of Biology, The Johns Hopkins University, 3400 North Charles Street, Baltimore, Maryland 21218; e-mail: [email protected]; [email protected] Key Words DNA, chromatin, insulators, transcription, nucleus ■ Abstract Chromatin boundaries and insulators are transcriptional regulatory el- ements that modulate interactions between enhancers and promoters and protect genes from silencing effects by the adjacent chromatin. Originally discovered in Drosophila, insulators have now been found in a variety of organisms, ranging from yeast to hu- mans. They have been found interspersed with regulatory sequences in complex genes and at the boundaries between active and inactive chromatin. Insulators might mod- ulate transcription by organizing the chromatin fiber within the nucleus through the establishment of higher-order domains of chromatin structure. CONTENTS INTRODUCTION .....................................................193 SPECIFIC EXAMPLES OF INSULATOR ELEMENTS .......................194 Insulator Elements in Drosophila .......................................195 The Chicken -Globin Locus and Other Vertebrate Boundary Elements ........................................198 Yeast Boundary Elements .............................................199 MECHANISMS OF INSULATOR FUNCTION .............................200 OTHER FACTORS INVOLVED IN INSULATOR FUNCTION .................203 INTRODUCTION Insulators or chromatin boundaries are DNA sequences defined operationally by two characteristics: They interfere with enhancer-promoter interactions when present between them, and they buffer transgenes from chromosomal position effects (diagrammed in Figures 1 and 2) (30). These two properties must be mani- festations of the normal role these sequences play in the control of gene expression.
    [Show full text]
  • Dynamics and Interplay of Nuclear Architecture, Genome Organization, and Gene Expression
    Downloaded from genesdev.cshlp.org on September 29, 2021 - Published by Cold Spring Harbor Laboratory Press REVIEW Dynamics and interplay of nuclear architecture, genome organization, and gene expression Robert Schneider and Rudolf Grosschedl1 Max Planck Institute of Immunobiology, 79108 Freiburg, Germany The organization of the genome in the nucleus of a eu- The nucleus is organized in specific compartments karyotic cell is fairly complex and dynamic. Various fea- that include proteinaceous nuclear bodies, eukaryotic tures of the nuclear architecture, including compart- and heterochromatic chromatin domains, compartmen- mentalization of molecular machines and the spatial talized multiprotein complexes, and nuclear pores that arrangement of genomic sequences, help to carry out and allow for nucleocytoplasmic transport. The dynamic, regulate nuclear processes, such as DNA replication, temporal, and spatial organization of the eukaryotic cell DNA repair, gene transcription, RNA processing, and nucleus emerges as a central determinant of genome mRNA transport. Compartmentalized multiprotein function, and it is important to understand the relation- complexes undergo extensive modifications or exchange ship between nuclear architecture, genome organization, of protein subunits, allowing for an exquisite dynamics and gene expression. Recently, high-resolution tech- of structural components and functional processes of the niques have permitted new insights into the nuclear ar- nucleus. The architecture of the interphase nucleus is chitecture and its relationship to gene expression. linked to the spatial arrangement of genes and gene clus- In this review, we focus on the dynamic organization ters, the structure of chromatin, and the accessibility of of the genome into chromosome territories and chroma- regulatory DNA elements. In this review, we discuss re- tin domains.
    [Show full text]
  • Genetically Customized Generations—A Need for Increased Regulatory Control Over Gene Editing Technology in the United States
    SMU Law Review Volume 73 Issue 3 Article 10 2020 Genetically Customized Generations—A Need for Increased Regulatory Control over Gene Editing Technology in the United States Morgan Mendicino Southern Methodist University, Dedman School of Law, [email protected] Follow this and additional works at: https://scholar.smu.edu/smulr Part of the Law Commons Recommended Citation Morgan Mendicino, Comment, Genetically Customized Generations—A Need for Increased Regulatory Control over Gene Editing Technology in the United States, 73 SMU L. REV. 585 (2020) https://scholar.smu.edu/smulr/vol73/iss3/10 This Comment is brought to you for free and open access by the Law Journals at SMU Scholar. It has been accepted for inclusion in SMU Law Review by an authorized administrator of SMU Scholar. For more information, please visit http://digitalrepository.smu.edu. GENETICALLY CUSTOMIZED GENERATIONS—A NEED FOR INCREASED REGULATORY CONTROL OVER GENE EDITING TECHNOLOGY IN THE UNITED STATES Morgan Mendicino* ABSTRACT Gene editing technology, once a far-fetched scientific fantasy, has be- come a tangible reality. One emerging form of gene editing in particular, human germline genome editing, possesses revolutionary capabilities that warrant cautious examination. Recent advancements in research have demonstrated that such biotechnology could be used to alter the genetic makeup of unborn children and the hereditary genes of future generations. This biotechnology may possess the ability to save countless human lives, but we must ask—What happens when the line between preventing disease and “playing God” becomes blurry? Human germline genome editing raises a multitude of widespread and deeply rooted questions surrounding the fate of humanity, all of which thwart justifying its present-day use.
    [Show full text]
  • What Is CRISPR? 2019 WHAT IS CB INSIGHTS?
    COVER OPTION 2 What Is CRISPR? 2019 WHAT IS CB INSIGHTS? CB Insights is a tech market intelligence platform that analyzes millions of data points on venture capital, startups, patents, partnerships and news mentions to help you see tomorrow’s opportunities, today. CLICK HERE TO LEARN MORE Table of Contents CONTENTS What is CRISPR? 4 Applications 11 Limitations 21 Controversies 24 Future of CRISPR 33 What Is CRISPR? 2 Intro CRISPR. What is it? And why is the scientific community so fascinated by its potential applications? Starting with its definition, we explain how this technology harnesses an ancient bacteria-based defense system — and how it will impact the world around us today. Imagine a future where parents can create bespoke babies, selecting the height and eye color of their unborn children. In fact, imagine that all traits can be customized to one’s preferences: domestic pet size, plant longevity, and more. It sounds like the backdrop of a dystopian science fiction novel. Yet some of this is already happening. Since its initial discovery in 2012, scientists have marveled at the applications of CRISPR (also known as Cas9 or CRISPR-Cas9). CRISPR may revolutionize how we tackle some of the world’s biggest problems, like cancer, food shortages, and organ transplant needs. Recent reports even examine its use as a highly efficient disease diagnostics tool. But, as with any new technology, it may also cause new unintended problems. Changing DNA — the code of life — will inevitably come with a host of important consequences. But society and industry can’t have this conversation without understanding the basics of CRISPR.
    [Show full text]
  • M1BP Cooperates with CP190 to Activate Transcription at TAD Borders and Promote Chromatin Insulator Activity
    ARTICLE https://doi.org/10.1038/s41467-021-24407-y OPEN M1BP cooperates with CP190 to activate transcription at TAD borders and promote chromatin insulator activity Indira Bag 1,2, Shue Chen 1,2,4, Leah F. Rosin 1,2,4, Yang Chen 1,2, Chen-Yu Liu3, Guo-Yun Yu3 & ✉ Elissa P. Lei 1,2 1234567890():,; Genome organization is driven by forces affecting transcriptional state, but the relationship between transcription and genome architecture remains unclear. Here, we identified the Drosophila transcription factor Motif 1 Binding Protein (M1BP) in physical association with the gypsy chromatin insulator core complex, including the universal insulator protein CP190. M1BP is required for enhancer-blocking and barrier activities of the gypsy insulator as well as its proper nuclear localization. Genome-wide, M1BP specifically colocalizes with CP190 at Motif 1-containing promoters, which are enriched at topologically associating domain (TAD) borders. M1BP facilitates CP190 chromatin binding at many shared sites and vice versa. Both factors promote Motif 1-dependent gene expression and transcription near TAD borders genome-wide. Finally, loss of M1BP reduces chromatin accessibility and increases both inter- and intra-TAD local genome compaction. Our results reveal physical and functional inter- action between CP190 and M1BP to activate transcription at TAD borders and mediate chromatin insulator-dependent genome organization. 1 Nuclear Organization and Gene Expression Section, Bethesda, MD, USA. 2 Laboratory of Biochemistry and Genetics, Bethesda, MD, USA. 3 Laboratory of Cellular and Developmental Biology, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD, USA. ✉ 4These authors contributed equally: Shue Chen, Leah F.
    [Show full text]
  • Is Germline Gene Editing Exceptional?
    William & Mary Law School William & Mary Law School Scholarship Repository Faculty Publications Faculty and Deans 2021 Is Germline Gene Editing Exceptional? Myrisha S. Lewis William & Mary Law School, [email protected] Follow this and additional works at: https://scholarship.law.wm.edu/facpubs Part of the Bioethics and Medical Ethics Commons, Food and Drug Law Commons, Health Law and Policy Commons, and the Science and Technology Law Commons Repository Citation Lewis, Myrisha S., "Is Germline Gene Editing Exceptional?" (2021). Faculty Publications. 2028. https://scholarship.law.wm.edu/facpubs/2028 Copyright c 2021 by the authors. This article is brought to you by the William & Mary Law School Scholarship Repository. https://scholarship.law.wm.edu/facpubs Is Germline Gene Editing Exceptional? Myrisha S. Lewis' Advances in gene editing have recently received significantscientific and media attention. Gene editing, especially CRISPR-Cas9, has revived multiple longstanding ethical debates, including debates related to parental autonomy, health disparities, disability perspectives, and racial and economic inequalities. Germline, or heritable,gene editinggenerates several newer, neglected bioethical debates, including those about the shared human germline and whether there is a "line" that humans should not cross. ThisArticle addressesseveral interrelatedethical and legal questions related to germline gene editing. Those questions address why, if at all, germline gene editing needs to be regulated and, ifgermline gene editing needs to be regulated, whether it can be regulated under existing law. Ultimately, this Article finds thatgermline gene editing should and can be regulated under existing law; however, the currentfederal-centric regime is not the optimal way to regulate this subset ofgene editing.
    [Show full text]