1
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Barber KW, Shrock E, Elledge SJ. CasPlay provides a gRNA-barcoded CRISPR-based display platform for antibody repertoire profiling. Cell Rep Methods 2022; 2:100318. [PMID: 36313802 PMCID: PMC9606310 DOI: 10.1016/j.crmeth.2022.100318] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2022] [Revised: 09/06/2022] [Accepted: 09/23/2022] [Indexed: 11/06/2022]
Abstract
Protein display technologies link proteins to distinct nucleic acid sequences (barcodes), enabling multiplexed protein assays via DNA sequencing. Here, we develop Cas9 display (CasPlay) to interrogate customized peptide libraries fused to catalytically inactive Cas9 (dCas9) by sequencing the guide RNA (gRNA) barcodes associated with each peptide. We first confirm the ability of CasPlay to characterize antibody epitopes by recovering a known binding motif for a monoclonal anti-FLAG antibody. We then use a CasPlay library tiling the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) proteome to evaluate vaccine-induced antibody reactivities. Using a peptide library representing the human virome, we demonstrate the ability of CasPlay to identify epitopes across many viruses from microliters of patient serum. Our results suggest that CasPlay is a viable strategy for customized protein interaction studies from highly complex libraries and could provide an alternative to phage display technologies.
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Affiliation(s)
- Karl W. Barber
- Division of Genetics, Brigham and Women’s Hospital, Howard Hughes Medical Institute, Boston, MA 02115, USA
- Department of Genetics, Harvard Medical School, Boston, MA 02115, USA
| | - Ellen Shrock
- Division of Genetics, Brigham and Women’s Hospital, Howard Hughes Medical Institute, Boston, MA 02115, USA
- Department of Genetics, Harvard Medical School, Boston, MA 02115, USA
| | - Stephen J. Elledge
- Division of Genetics, Brigham and Women’s Hospital, Howard Hughes Medical Institute, Boston, MA 02115, USA
- Department of Genetics, Harvard Medical School, Boston, MA 02115, USA
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2
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Borriello F, Poli V, Shrock E, Spreafico R, Liu X, Pishesha N, Carpenet C, Chou J, Di Gioia M, McGrath ME, Dillen CA, Barrett NA, Lacanfora L, Franco ME, Marongiu L, Iwakura Y, Pucci F, Kruppa MD, Ma Z, Lowman DW, Ensley HE, Nanishi E, Saito Y, O'Meara TR, Seo HS, Dhe-Paganon S, Dowling DJ, Frieman M, Elledge SJ, Levy O, Irvine DJ, Ploegh HL, Williams DL, Zanoni I. An adjuvant strategy enabled by modulation of the physical properties of microbial ligands expands antigen immunogenicity. Cell 2022; 185:614-629.e21. [PMID: 35148840 PMCID: PMC8857056 DOI: 10.1016/j.cell.2022.01.009] [Citation(s) in RCA: 32] [Impact Index Per Article: 16.0] [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: 01/07/2021] [Revised: 10/19/2021] [Accepted: 01/14/2022] [Indexed: 12/15/2022]
Abstract
Activation of the innate immune system via pattern recognition receptors (PRRs) is key to generate lasting adaptive immunity. PRRs detect unique chemical patterns associated with invading microorganisms, but whether and how the physical properties of PRR ligands influence the development of the immune response remains unknown. Through the study of fungal mannans, we show that the physical form of PRR ligands dictates the immune response. Soluble mannans are immunosilent in the periphery but elicit a potent pro-inflammatory response in the draining lymph node (dLN). By modulating the physical form of mannans, we developed a formulation that targets both the periphery and the dLN. When combined with viral glycoprotein antigens, this mannan formulation broadens epitope recognition, elicits potent antigen-specific neutralizing antibodies, and confers protection against viral infections of the lung. Thus, the physical properties of microbial ligands determine the outcome of the immune response and can be harnessed for vaccine development.
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Affiliation(s)
- Francesco Borriello
- Harvard Medical School, Boston, MA, USA; Boston Children's Hospital, Division of Immunology, Boston, MA, USA; Department of Translational Medical Sciences, University of Naples Federico II, Naples, Italy
| | - Valentina Poli
- Harvard Medical School, Boston, MA, USA; Boston Children's Hospital, Division of Immunology, Boston, MA, USA
| | - Ellen Shrock
- Harvard Medical School, Boston, MA, USA; Howard Hughes Medical Institute, Division of Genetics, Brigham and Women's Hospital, Program in Virology, Boston, MA, USA
| | - Roberto Spreafico
- Institute for Quantitative and Computational Biosciences, University of California, Los Angeles, Los Angeles, CA, USA
| | - Xin Liu
- Harvard Medical School, Boston, MA, USA; Program in Cellular and Molecular Medicine, Boston Children's Hospital, Boston, MA, USA
| | - Novalia Pishesha
- Harvard Medical School, Boston, MA, USA; Program in Cellular and Molecular Medicine, Boston Children's Hospital, Boston, MA, USA
| | - Claire Carpenet
- Harvard Medical School, Boston, MA, USA; Program in Cellular and Molecular Medicine, Boston Children's Hospital, Boston, MA, USA
| | - Janet Chou
- Harvard Medical School, Boston, MA, USA; Boston Children's Hospital, Division of Immunology, Boston, MA, USA
| | - Marco Di Gioia
- Harvard Medical School, Boston, MA, USA; Boston Children's Hospital, Division of Immunology, Boston, MA, USA
| | - Marisa E McGrath
- University of Maryland School of Medicine, Department of Microbiology and Immunology, Baltimore, MD, USA
| | - Carly A Dillen
- University of Maryland School of Medicine, Department of Microbiology and Immunology, Baltimore, MD, USA
| | - Nora A Barrett
- Harvard Medical School, Boston, MA, USA; Brigham and Women's Hospital, Division of Allergy and Clinical Immunology, Boston, MA, USA
| | - Lucrezia Lacanfora
- Harvard Medical School, Boston, MA, USA; Boston Children's Hospital, Division of Immunology, Boston, MA, USA; Department of Biotechnology and Biosciences, University of Milano-Bicocca, Milan, Italy
| | - Marcella E Franco
- Harvard Medical School, Boston, MA, USA; Boston Children's Hospital, Division of Immunology, Boston, MA, USA; Department of Biotechnology and Biosciences, University of Milano-Bicocca, Milan, Italy
| | - Laura Marongiu
- Department of Biotechnology and Biosciences, University of Milano-Bicocca, Milan, Italy
| | - Yoichiro Iwakura
- Center for Animal Disease Models, Research Institute for Biomedical Sciences, Tokyo University of Science, Tokyo, Japan
| | - Ferdinando Pucci
- Department of Otolaryngology-Head and Neck Surgery, Department of Cell, Developmental & Cancer Biology, Knight Cancer Institute, Oregon Health & Science University, Portland, OR, USA
| | - Michael D Kruppa
- Department of Biomedical Sciences, Quillen College of Medicine, Center of Excellence in Inflammation, Infectious Disease and Immunity, East Tennessee State University, Johnson City, TN, USA
| | - Zuchao Ma
- Department of Surgery, Quillen College of Medicine, Center of Excellence in Inflammation, Infectious Disease and Immunity, East Tennessee State University, Johnson City, TN, USA
| | - Douglas W Lowman
- Department of Surgery, Quillen College of Medicine, Center of Excellence in Inflammation, Infectious Disease and Immunity, East Tennessee State University, Johnson City, TN, USA
| | - Harry E Ensley
- Department of Surgery, Quillen College of Medicine, Center of Excellence in Inflammation, Infectious Disease and Immunity, East Tennessee State University, Johnson City, TN, USA
| | - Etsuro Nanishi
- Harvard Medical School, Boston, MA, USA; Boston Children's Hospital, Precision Vaccines Program, Boston, MA, USA
| | - Yoshine Saito
- Boston Children's Hospital, Precision Vaccines Program, Boston, MA, USA
| | - Timothy R O'Meara
- Boston Children's Hospital, Precision Vaccines Program, Boston, MA, USA
| | - Hyuk-Soo Seo
- Harvard Medical School, Boston, MA, USA; Dana-Farber Cancer Institute, Department of Cancer Biology, Boston, MA, USA
| | - Sirano Dhe-Paganon
- Harvard Medical School, Boston, MA, USA; Dana-Farber Cancer Institute, Department of Cancer Biology, Boston, MA, USA
| | - David J Dowling
- Harvard Medical School, Boston, MA, USA; Boston Children's Hospital, Precision Vaccines Program, Boston, MA, USA
| | - Matthew Frieman
- University of Maryland School of Medicine, Department of Microbiology and Immunology, Baltimore, MD, USA
| | - Stephen J Elledge
- Harvard Medical School, Boston, MA, USA; Howard Hughes Medical Institute, Division of Genetics, Brigham and Women's Hospital, Program in Virology, Boston, MA, USA
| | - Ofer Levy
- Harvard Medical School, Boston, MA, USA; Boston Children's Hospital, Precision Vaccines Program, Boston, MA, USA; Broad Institute of MIT & Harvard, Cambridge, MA, USA
| | - Darrell J Irvine
- Massachusetts Institute of Technology, Department of Biological Engineering and Department of Materials Science and Engineering, Koch Institute for Integrative Cancer Research, Ragon Institute of MGH, MIT and Harvard, Cambridge, MA, USA; Howard Hughes Medical Institute, Chevy Chase, MD, USA
| | - Hidde L Ploegh
- Harvard Medical School, Boston, MA, USA; Program in Cellular and Molecular Medicine, Boston Children's Hospital, Boston, MA, USA
| | - David L Williams
- Department of Biomedical Sciences, Quillen College of Medicine, Center of Excellence in Inflammation, Infectious Disease and Immunity, East Tennessee State University, Johnson City, TN, USA
| | - Ivan Zanoni
- Harvard Medical School, Boston, MA, USA; Boston Children's Hospital, Division of Immunology, Boston, MA, USA; Boston Children's Hospital, Division of Gastroenterology, Boston, MA, USA.
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3
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Barber KW, Shrock E, Elledge SJ. CRISPR-based peptide library display and programmable microarray self-assembly for rapid quantitative protein binding assays. Mol Cell 2021; 81:3650-3658.e5. [PMID: 34390675 DOI: 10.1016/j.molcel.2021.07.027] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [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: 03/19/2021] [Revised: 05/25/2021] [Accepted: 07/21/2021] [Indexed: 01/08/2023]
Abstract
CRISPR-inspired systems have been extensively developed for applications in genome editing and nucleic acid detection. Here, we introduce a CRISPR-based peptide display technology to facilitate customized, high-throughput in vitro protein interaction studies. We show that bespoke peptide libraries fused to catalytically inactive Cas9 (dCas9) and barcoded with unique single guide RNA (sgRNA) molecules self-assemble from a single mixed pool to programmable positions on a DNA microarray surface for rapid, multiplexed binding assays. We develop dCas9-displayed saturation mutagenesis libraries to characterize antibody-epitope binding for a commercial anti-FLAG monoclonal antibody and human serum antibodies. We also show that our platform can be used for viral epitope mapping and exhibits promise as a multiplexed diagnostics tool. Our CRISPR-based peptide display platform and the principles of complex library self-assembly using dCas9 could be adapted for rapid interrogation of varied customized protein libraries or biological materials assembly using DNA scaffolding.
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Affiliation(s)
- Karl W Barber
- Division of Genetics, Brigham and Women's Hospital, Howard Hughes Medical Institute, Boston, MA 02115, USA; Department of Genetics, Harvard Medical School, Boston, MA 02115, USA
| | - Ellen Shrock
- Division of Genetics, Brigham and Women's Hospital, Howard Hughes Medical Institute, Boston, MA 02115, USA; Department of Genetics, Harvard Medical School, Boston, MA 02115, USA
| | - Stephen J Elledge
- Division of Genetics, Brigham and Women's Hospital, Howard Hughes Medical Institute, Boston, MA 02115, USA; Department of Genetics, Harvard Medical School, Boston, MA 02115, USA.
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4
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Borriello F, Spreafico R, Poli V, Shrock E, Chou J, Barrett NA, Lacanfora L, Franco ME, Marongiu L, Iwakura Y, Pucci F, Kruppa MD, Ma Z, Lowman DW, Ensley HE, Nanishi E, Saito Y, O’Meara TR, Seo HS, McGrath ME, Logue J, Haupt RE, Dhe-Paganon S, Dowling DJ, Frieman M, Elledge SJ, Levy O, Irvine DJ, Williams DL, Zanoni I. An adjuvant strategy enabled by modulation of the physical properties of fungal mannans elicits pan-coronavirus reactive anti-SARS-CoV-2 Spike antibodies. The Journal of Immunology 2021. [DOI: 10.4049/jimmunol.206.supp.30.08] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
Abstract
Abstract
Activation of the innate immune system via pattern recognition receptors (PRRs) is key to generate long-lasting adaptive immunity. While it is known that PRRs detect unique chemical patterns associated with invading microorganism, if and how the physical properties of PRR ligands influence development of the immune response is largely overlooked. Through the study of fungal mannans we present data that put the physical form of PRR ligands at the center of the process that determines the outcome of the immune response. Soluble mannans are immunosilent in the periphery but elicit a potent pro-inflammatory response in the draining lymph node (dLN). By modulating the physical form of mannans, we developed a formulation that targets both periphery and dLN. When combined with SARS-CoV-2 Spike, this formulation elicits neutralizing anti-SARS-CoV-2 antibodies that cross-react with pathogenic coronaviruses. Thus, the physical properties of fungal ligands can be harnessed for rational adjuvant design and vaccine development.
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5
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Shrock E, Fujimura E, Kula T, Timms RT, Lee IH, Leng Y, Robinson ML, Sie BM, Li MZ, Chen Y, Logue J, Zuiani A, McCulloch D, Lelis FJN, Henson S, Monaco DR, Travers M, Habibi S, Clarke WA, Caturegli P, Laeyendecker O, Piechocka-Trocha A, Li JZ, Khatri A, Chu HY, Villani AC, Kays K, Goldberg MB, Hacohen N, Filbin MR, Yu XG, Walker BD, Wesemann DR, Larman HB, Lederer JA, Elledge SJ. Viral epitope profiling of COVID-19 patients reveals cross-reactivity and correlates of severity. Science 2020; 370:science.abd4250. [PMID: 32994364 PMCID: PMC7857405 DOI: 10.1126/science.abd4250] [Citation(s) in RCA: 423] [Impact Index Per Article: 105.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Accepted: 09/25/2020] [Indexed: 12/11/2022]
Abstract
Understanding humoral responses to severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is critical for improving diagnostics, therapeutics, and vaccines. Deep serological profiling of 232 coronavirus disease 2019 (COVID-19) patients and 190 pre-COVID-19 era controls using VirScan revealed more than 800 epitopes in the SARS-CoV-2 proteome, including 10 epitopes likely recognized by neutralizing antibodies. Preexisting antibodies in controls recognized SARS-CoV-2 ORF1, whereas only COVID-19 patient antibodies primarily recognized spike protein and nucleoprotein. A machine learning model trained on VirScan data predicted SARS-CoV-2 exposure history with 99% sensitivity and 98% specificity; a rapid Luminex-based diagnostic was developed from the most discriminatory SARS-CoV-2 peptides. Individuals with more severe COVID-19 exhibited stronger and broader SARS-CoV-2 responses, weaker antibody responses to prior infections, and higher incidence of cytomegalovirus and herpes simplex virus 1, possibly influenced by demographic covariates. Among hospitalized patients, males produce stronger SARS-CoV-2 antibody responses than females.
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Affiliation(s)
- Ellen Shrock
- Department of Genetics, Harvard Medical School, Boston, MA, USA.,Howard Hughes Medical Institute, Division of Genetics, Brigham and Women’s Hospital, Program in Virology, Harvard Medical School, Boston, MA, USA
| | - Eric Fujimura
- Department of Genetics, Harvard Medical School, Boston, MA, USA.,Howard Hughes Medical Institute, Division of Genetics, Brigham and Women’s Hospital, Program in Virology, Harvard Medical School, Boston, MA, USA.,Chemical Biology Program, Harvard University, Cambridge, MA, USA
| | - Tomasz Kula
- Department of Genetics, Harvard Medical School, Boston, MA, USA.,Howard Hughes Medical Institute, Division of Genetics, Brigham and Women’s Hospital, Program in Virology, Harvard Medical School, Boston, MA, USA
| | - Richard T. Timms
- Department of Genetics, Harvard Medical School, Boston, MA, USA.,Howard Hughes Medical Institute, Division of Genetics, Brigham and Women’s Hospital, Program in Virology, Harvard Medical School, Boston, MA, USA
| | - I-Hsiu Lee
- Center for Systems Biology, Department of Radiology, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA
| | - Yumei Leng
- Department of Genetics, Harvard Medical School, Boston, MA, USA.,Howard Hughes Medical Institute, Division of Genetics, Brigham and Women’s Hospital, Program in Virology, Harvard Medical School, Boston, MA, USA
| | - Matthew L. Robinson
- Division of Infectious Diseases, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Brandon M. Sie
- Department of Genetics, Harvard Medical School, Boston, MA, USA.,Howard Hughes Medical Institute, Division of Genetics, Brigham and Women’s Hospital, Program in Virology, Harvard Medical School, Boston, MA, USA
| | - Mamie Z. Li
- Department of Genetics, Harvard Medical School, Boston, MA, USA.,Howard Hughes Medical Institute, Division of Genetics, Brigham and Women’s Hospital, Program in Virology, Harvard Medical School, Boston, MA, USA
| | - Yuezhou Chen
- Division of Allergy and Immunology and Division of Genetics, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, USA.,Massachusetts Consortium on Pathogen Readiness, Boston, MA, USA
| | - Jennifer Logue
- Department of Medicine, University of Washington, Seattle, WA, USA
| | - Adam Zuiani
- Division of Allergy and Immunology and Division of Genetics, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, USA.,Massachusetts Consortium on Pathogen Readiness, Boston, MA, USA
| | - Denise McCulloch
- Department of Medicine, University of Washington, Seattle, WA, USA
| | - Felipe J. N. Lelis
- Division of Allergy and Immunology and Division of Genetics, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, USA.,Massachusetts Consortium on Pathogen Readiness, Boston, MA, USA
| | - Stephanie Henson
- Institute for Cell Engineering, Immunology Division, Department of Pathology, Johns Hopkins University, Baltimore, MD, USA
| | - Daniel R. Monaco
- Institute for Cell Engineering, Immunology Division, Department of Pathology, Johns Hopkins University, Baltimore, MD, USA
| | - Meghan Travers
- Division of Allergy and Immunology and Division of Genetics, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, USA.,Massachusetts Consortium on Pathogen Readiness, Boston, MA, USA
| | - Shaghayegh Habibi
- Division of Allergy and Immunology and Division of Genetics, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, USA.,Massachusetts Consortium on Pathogen Readiness, Boston, MA, USA
| | - William A. Clarke
- Division of Clinical Chemistry, Department of Pathology, Johns Hopkins School of Medicine, Baltimore, MD, USA
| | - Patrizio Caturegli
- Division of Immunology, Department of Pathology, Johns Hopkins School of Medicine, Baltimore, MD, USA
| | - Oliver Laeyendecker
- Division of Infectious Diseases, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA.,Division of Intramural Research, NIAID, NIH, Baltimore, MD, USA
| | - Alicja Piechocka-Trocha
- Massachusetts Consortium on Pathogen Readiness, Boston, MA, USA.,Howard Hughes Medical Institute, Ragon Institute of MGH, MIT and Harvard, Cambridge, MA, USA
| | - Jonathan Z. Li
- Massachusetts Consortium on Pathogen Readiness, Boston, MA, USA.,Infectious Disease Division, Department of Medicine, Brigham and Women’s Hospital, Boston, MA, USA
| | - Ashok Khatri
- Endocrine Unit and Department of Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Helen Y. Chu
- Department of Medicine, University of Washington, Seattle, WA, USA
| | | | - Alexandra-Chloé Villani
- Massachusetts General Hospital Center for Immunology and Inflammatory Diseases, Massachusetts General Hospital Cancer Center, Department of Medicine, Harvard Medical School, Boston, MA, USA
| | - Kyle Kays
- Department of Emergency Medicine, Massachusetts General Hospital, Boston, MA, USA
| | - Marcia B. Goldberg
- Center for Bacterial Pathogenesis, Division of Infectious Diseases, Department of Medicine and Microbiology, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA
| | - Nir Hacohen
- Massachusetts General Hospital Cancer Center, Department of Medicine, Harvard Medical School, Boston, MA, USA
| | - Michael R. Filbin
- Department of Emergency Medicine, Massachusetts General Hospital, Boston, MA, USA
| | - Xu G. Yu
- Massachusetts Consortium on Pathogen Readiness, Boston, MA, USA.,Infectious Disease Division, Department of Medicine, Brigham and Women’s Hospital, Boston, MA, USA.,Massachusetts General Hospital, Harvard Medical School, Boston, MA 02115, USA.,Ragon Institute of MGH, MIT and Harvard, Cambridge, MA, USA
| | - Bruce D. Walker
- Massachusetts Consortium on Pathogen Readiness, Boston, MA, USA.,Howard Hughes Medical Institute, Ragon Institute of MGH, MIT and Harvard, Cambridge, MA, USA.,Centre for the AIDS Programme of Research in South Africa, Congella, South Africa
| | - Duane R. Wesemann
- Division of Allergy and Immunology and Division of Genetics, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, USA.,Massachusetts Consortium on Pathogen Readiness, Boston, MA, USA
| | - H. Benjamin Larman
- Institute for Cell Engineering, Immunology Division, Department of Pathology, Johns Hopkins University, Baltimore, MD, USA
| | - James A. Lederer
- Department of Surgery, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA
| | - Stephen J. Elledge
- Department of Genetics, Harvard Medical School, Boston, MA, USA.,Howard Hughes Medical Institute, Division of Genetics, Brigham and Women’s Hospital, Program in Virology, Harvard Medical School, Boston, MA, USA.,Massachusetts Consortium on Pathogen Readiness, Boston, MA, USA.,Corresponding author.
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6
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Lin L, Liu Y, Xu F, Huang J, Daugaard TF, Petersen TS, Hansen B, Ye L, Zhou Q, Fang F, Yang L, Li S, Fløe L, Jensen KT, Shrock E, Chen F, Yang H, Wang J, Liu X, Xu X, Bolund L, Nielsen AL, Luo Y. Genome-wide determination of on-target and off-target characteristics for RNA-guided DNA methylation by dCas9 methyltransferases. Gigascience 2018; 7:1-19. [PMID: 29635374 PMCID: PMC5888497 DOI: 10.1093/gigascience/giy011] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2017] [Revised: 06/29/2017] [Accepted: 02/12/2018] [Indexed: 12/31/2022] Open
Abstract
Background Fusion of DNA methyltransferase domains to the nuclease-deficient clustered regularly interspaced short palindromic repeat (CRISPR) associated protein 9 (dCas9) has been used for epigenome editing, but the specificities of these dCas9 methyltransferases have not been fully investigated. Findings We generated CRISPR-guided DNA methyltransferases by fusing the catalytic domain of DNMT3A or DNMT3B to the C terminus of the dCas9 protein from Streptococcus pyogenes and validated its on-target and global off-target characteristics. Using targeted quantitative bisulfite pyrosequencing, we prove that dCas9-BFP-DNMT3A and dCas9-BFP-DNMT3B can efficiently methylate the CpG dinucleotides flanking its target sites at different genomic loci (uPA and TGFBR3) in human embryonic kidney cells (HEK293T). Furthermore, we conducted whole genome bisulfite sequencing (WGBS) to address the specificity of our dCas9 methyltransferases. WGBS revealed that although dCas9-BFP-DNMT3A and dCas9-BFP-DNMT3B did not cause global methylation changes, a substantial number (more than 1000) of the off-target differentially methylated regions (DMRs) were identified. The off-target DMRs, which were hypermethylated in cells expressing dCas9 methyltransferase and guide RNAs, were predominantly found in promoter regions, 5΄ untranslated regions, CpG islands, and DNase I hypersensitivity sites, whereas unexpected hypomethylated off-target DMRs were significantly enriched in repeated sequences. Through chromatin immunoprecipitation with massive parallel DNA sequencing analysis, we further revealed that these off-target DMRs were weakly correlated with dCas9 off-target binding sites. Using quantitative polymerase chain reaction, RNA sequencing, and fluorescence reporter cells, we also found that dCas9-BFP-DNMT3A and dCas9-BFP-DNMT3B can mediate transient inhibition of gene expression, which might be caused by dCas9-mediated de novo DNA methylation as well as interference with transcription. Conclusion Our results prove that dCas9 methyltransferases cause efficient RNA-guided methylation of specific endogenous CpGs. However, there is significant off-target methylation indicating that further improvements of the specificity of CRISPR-dCas9 based DNA methylation modifiers are required.
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Affiliation(s)
- Lin Lin
- Department of Biomedicine, Aarhus University, Aarhus, Denmark
- Danish Regenerative Engineering Alliance for Medicine, Department of Biomedicine, Aarhus University, Aarhus, Denmark
| | - Yong Liu
- Department of Biomedicine, Aarhus University, Aarhus, Denmark
| | - Fengping Xu
- BGI-Shenzhen, Shenzhen 518083, China
- China National GeneBank-Shenzhen, BGI-Research, Shenzhen 518083, China
- Department of Biology, University of Copenhagen, Copenhagen, Denmark
| | - Jinrong Huang
- BGI-Shenzhen, Shenzhen 518083, China
- China National GeneBank-Shenzhen, BGI-Research, Shenzhen 518083, China
- Department of Biology, University of Copenhagen, Copenhagen, Denmark
| | | | | | - Bettina Hansen
- Department of Biomedicine, Aarhus University, Aarhus, Denmark
| | | | - Qing Zhou
- BGI-Shenzhen, Shenzhen 518083, China
- China National GeneBank-Shenzhen, BGI-Research, Shenzhen 518083, China
| | - Fang Fang
- BGI-Shenzhen, Shenzhen 518083, China
- China National GeneBank-Shenzhen, BGI-Research, Shenzhen 518083, China
| | - Ling Yang
- BGI-Shenzhen, Shenzhen 518083, China
- China National GeneBank-Shenzhen, BGI-Research, Shenzhen 518083, China
| | - Shengting Li
- Department of Biomedicine, Aarhus University, Aarhus, Denmark
- BGI-Shenzhen, Shenzhen 518083, China
| | - Lasse Fløe
- Department of Biomedicine, Aarhus University, Aarhus, Denmark
| | | | - Ellen Shrock
- Department of Genetics, Harvard Medical School, Boston, MA, USA
| | - Fang Chen
- BGI-Shenzhen, Shenzhen 518083, China
- China National GeneBank-Shenzhen, BGI-Research, Shenzhen 518083, China
- Department of Biology, University of Copenhagen, Copenhagen, Denmark
| | - Huanming Yang
- BGI-Shenzhen, Shenzhen 518083, China
- China National GeneBank-Shenzhen, BGI-Research, Shenzhen 518083, China
- James D. Watson Institute of Genome Sciences, Hangzhou 310058, China
| | - Jian Wang
- BGI-Shenzhen, Shenzhen 518083, China
- China National GeneBank-Shenzhen, BGI-Research, Shenzhen 518083, China
| | - Xin Liu
- BGI-Shenzhen, Shenzhen 518083, China
- China National GeneBank-Shenzhen, BGI-Research, Shenzhen 518083, China
| | - Xun Xu
- BGI-Shenzhen, Shenzhen 518083, China
- China National GeneBank-Shenzhen, BGI-Research, Shenzhen 518083, China
| | - Lars Bolund
- Department of Biomedicine, Aarhus University, Aarhus, Denmark
- Danish Regenerative Engineering Alliance for Medicine, Department of Biomedicine, Aarhus University, Aarhus, Denmark
- BGI-Shenzhen, Shenzhen 518083, China
- China National GeneBank-Shenzhen, BGI-Research, Shenzhen 518083, China
- BGI-Qingdao, 2877 Tuanjie Road, Sino-German Ecopark, Qingdao, 266000, China
- Lars Bolund Institute of Regenerative Medicine, BGI-Qingdao, China
| | | | - Yonglun Luo
- Department of Biomedicine, Aarhus University, Aarhus, Denmark
- Danish Regenerative Engineering Alliance for Medicine, Department of Biomedicine, Aarhus University, Aarhus, Denmark
- BGI-Shenzhen, Shenzhen 518083, China
- China National GeneBank-Shenzhen, BGI-Research, Shenzhen 518083, China
- BGI-Qingdao, 2877 Tuanjie Road, Sino-German Ecopark, Qingdao, 266000, China
- Lars Bolund Institute of Regenerative Medicine, BGI-Qingdao, China
- BrainStem - Stem Cell Center of Excellence in Neurology, Copenhagen, Denmark
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7
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Abstract
CRISPR-Cas9 has revolutionized the generation of transgenic animals. This system has demonstrated an unprecedented efficiency, multiplexability, and ease of use, thereby reducing the time and cost required for genome editing and enabling the production of animals with more extensive genetic modifications. It has also been shown to be applicable to a wide variety of animals, from early-branching metazoans to primates. Genome-wide screens in model organisms have been performed, accurate models of human diseases have been constructed, and potential therapies have been tested and validated in animal models. Several achievements in genetic modification of animals have been translated into products for the agricultural and pharmaceutical industries. Based on the remarkable progress to date, one may anticipate that in the future, CRISPR-Cas9 technology will enable additional far-reaching advances, including understanding the bases of diseases with complex genetic origins, engineering animals to produce organs for human transplantation, and genetically transforming entire populations of organisms to prevent the spread of disease.
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Affiliation(s)
- Ellen Shrock
- Biological and Biomedical Sciences, Harvard University, Boston, MA, United States; Harvard Medical School, Boston, MA, United States
| | - Marc Güell
- Harvard Medical School, Boston, MA, United States; Pompeu Fabra University, Barcelona, Spain.
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8
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Niu D, Wei HJ, Lin L, George H, Wang T, Lee IH, Zhao HY, Wang Y, Kan Y, Shrock E, Lesha E, Wang G, Luo Y, Qing Y, Jiao D, Zhao H, Zhou X, Wang S, Wei H, Güell M, Church GM, Yang L. Inactivation of porcine endogenous retrovirus in pigs using CRISPR-Cas9. Science 2017; 357:1303-1307. [PMID: 28798043 DOI: 10.1126/science.aan4187] [Citation(s) in RCA: 430] [Impact Index Per Article: 61.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2017] [Accepted: 08/03/2017] [Indexed: 12/14/2022]
Abstract
Xenotransplantation is a promising strategy to alleviate the shortage of organs for human transplantation. In addition to the concerns about pig-to-human immunological compatibility, the risk of cross-species transmission of porcine endogenous retroviruses (PERVs) has impeded the clinical application of this approach. We previously demonstrated the feasibility of inactivating PERV activity in an immortalized pig cell line. We now confirm that PERVs infect human cells, and we observe the horizontal transfer of PERVs among human cells. Using CRISPR-Cas9, we inactivated all of the PERVs in a porcine primary cell line and generated PERV-inactivated pigs via somatic cell nuclear transfer. Our study highlights the value of PERV inactivation to prevent cross-species viral transmission and demonstrates the successful production of PERV-inactivated animals to address the safety concern in clinical xenotransplantation.
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Affiliation(s)
- Dong Niu
- eGenesis, Cambridge, MA 02139, USA.,College of Animal Sciences, Zhejiang University, Hangzhou 310058, China
| | - Hong-Jiang Wei
- State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan, Yunnan Agricultural University, Kunming 650201, China.,College of Animal Science and Technology, Yunnan Agricultural University, Kunming 650201, China
| | - Lin Lin
- Department of Biomedicine, Aarhus University, 8000 Aarhus C, Denmark
| | | | - Tao Wang
- eGenesis, Cambridge, MA 02139, USA
| | | | - Hong-Ye Zhao
- State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan, Yunnan Agricultural University, Kunming 650201, China
| | - Yong Wang
- Department of Laboratory Animal Science, College of Basic Medical Sciences, Third Military Medical University, Chongqing, 400038, China
| | | | - Ellen Shrock
- Department of Genetics, Harvard Medical School, Boston, MA 02115, USA
| | | | | | - Yonglun Luo
- Department of Biomedicine, Aarhus University, 8000 Aarhus C, Denmark
| | - Yubo Qing
- State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan, Yunnan Agricultural University, Kunming 650201, China.,College of Animal Science and Technology, Yunnan Agricultural University, Kunming 650201, China
| | - Deling Jiao
- State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan, Yunnan Agricultural University, Kunming 650201, China.,College of Animal Science and Technology, Yunnan Agricultural University, Kunming 650201, China
| | - Heng Zhao
- State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan, Yunnan Agricultural University, Kunming 650201, China.,College of Animal Science and Technology, Yunnan Agricultural University, Kunming 650201, China
| | - Xiaoyang Zhou
- Department of Laboratory Animal Science, College of Basic Medical Sciences, Third Military Medical University, Chongqing, 400038, China
| | - Shouqi Wang
- Research Institute of Shenzhen Jinxinnong Technology, Shenzhen 518106, China
| | - Hong Wei
- Department of Laboratory Animal Science, College of Basic Medical Sciences, Third Military Medical University, Chongqing, 400038, China
| | | | - George M Church
- eGenesis, Cambridge, MA 02139, USA.,Department of Genetics, Harvard Medical School, Boston, MA 02115, USA.,Wyss Institute for Biologically Inspired Engineering, Harvard University, Cambridge, MA 02138, USA
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9
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Ostrov N, Landon M, Guell M, Kuznetsov G, Teramoto J, Cervantes N, Zhou M, Singh K, Napolitano MG, Moosburner M, Shrock E, Pruitt BW, Conway N, Goodman DB, Gardner CL, Tyree G, Gonzales A, Wanner BL, Norville JE, Lajoie MJ, Church GM. Design, synthesis, and testing toward a 57-codon genome. Science 2016; 353:819-22. [PMID: 27540174 DOI: 10.1126/science.aaf3639] [Citation(s) in RCA: 192] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2016] [Accepted: 07/21/2016] [Indexed: 01/07/2023]
Abstract
Recoding--the repurposing of genetic codons--is a powerful strategy for enhancing genomes with functions not commonly found in nature. Here, we report computational design, synthesis, and progress toward assembly of a 3.97-megabase, 57-codon Escherichia coli genome in which all 62,214 instances of seven codons were replaced with synonymous alternatives across all protein-coding genes. We have validated 63% of recoded genes by individually testing 55 segments of 50 kilobases each. We observed that 91% of tested essential genes retained functionality with limited fitness effect. We demonstrate identification and correction of lethal design exceptions, only 13 of which were found in 2229 genes. This work underscores the feasibility of rewriting genomes and establishes a framework for large-scale design, assembly, troubleshooting, and phenotypic analysis of synthetic organisms.
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Affiliation(s)
- Nili Ostrov
- Department of Genetics, Harvard Medical School, Boston, MA 02115, USA
| | - Matthieu Landon
- Department of Genetics, Harvard Medical School, Boston, MA 02115, USA. Program in Systems Biology, Harvard University, Cambridge, MA 02138, USA. Ecole des Mines de Paris, Mines Paristech, Paris 75272, France
| | - Marc Guell
- Department of Genetics, Harvard Medical School, Boston, MA 02115, USA. Wyss Institute for Biologically Inspired Engineering, Boston, MA 02115, USA
| | - Gleb Kuznetsov
- Department of Genetics, Harvard Medical School, Boston, MA 02115, USA. Program in Biophysics, Harvard University, Boston, MA 02115, USA
| | - Jun Teramoto
- Department of Genetics, Harvard Medical School, Boston, MA 02115, USA. Department of Biological Sciences, Purdue University, West Lafayette, IN 47907, USA
| | - Natalie Cervantes
- Department of Genetics, Harvard Medical School, Boston, MA 02115, USA
| | - Minerva Zhou
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Kerry Singh
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Michael G Napolitano
- Department of Genetics, Harvard Medical School, Boston, MA 02115, USA. Program in Biological and Biomedical Sciences, Harvard University, Cambridge, MA 02138, USA
| | - Mark Moosburner
- Department of Genetics, Harvard Medical School, Boston, MA 02115, USA
| | - Ellen Shrock
- Department of Genetics, Harvard Medical School, Boston, MA 02115, USA
| | - Benjamin W Pruitt
- Wyss Institute for Biologically Inspired Engineering, Boston, MA 02115, USA
| | - Nicholas Conway
- Wyss Institute for Biologically Inspired Engineering, Boston, MA 02115, USA
| | - Daniel B Goodman
- Department of Genetics, Harvard Medical School, Boston, MA 02115, USA. Wyss Institute for Biologically Inspired Engineering, Boston, MA 02115, USA
| | - Cameron L Gardner
- Department of Genetics, Harvard Medical School, Boston, MA 02115, USA
| | - Gary Tyree
- Department of Genetics, Harvard Medical School, Boston, MA 02115, USA
| | | | - Barry L Wanner
- Department of Genetics, Harvard Medical School, Boston, MA 02115, USA. Department of Microbiology and Immunobiology, Harvard Medical School, Boston, MA 02115, USA
| | - Julie E Norville
- Department of Genetics, Harvard Medical School, Boston, MA 02115, USA
| | - Marc J Lajoie
- Department of Genetics, Harvard Medical School, Boston, MA 02115, USA.
| | - George M Church
- Department of Genetics, Harvard Medical School, Boston, MA 02115, USA. Wyss Institute for Biologically Inspired Engineering, Boston, MA 02115, USA.
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10
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Yang L, Güell M, Niu D, George H, Lesha E, Grishin D, Aach J, Shrock E, Xu W, Poci J, Cortazio R, Wilkinson RA, Fishman JA, Church G. Genome-wide inactivation of porcine endogenous retroviruses (PERVs). Science 2015; 350:1101-4. [PMID: 26456528 DOI: 10.1126/science.aad1191] [Citation(s) in RCA: 382] [Impact Index Per Article: 42.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2015] [Accepted: 10/08/2015] [Indexed: 12/28/2022]
Abstract
The shortage of organs for transplantation is a major barrier to the treatment of organ failure. Although porcine organs are considered promising, their use has been checked by concerns about the transmission of porcine endogenous retroviruses (PERVs) to humans. Here we describe the eradication of all PERVs in a porcine kidney epithelial cell line (PK15). We first determined the PK15 PERV copy number to be 62. Using CRISPR-Cas9, we disrupted all copies of the PERV pol gene and demonstrated a >1000-fold reduction in PERV transmission to human cells, using our engineered cells. Our study shows that CRISPR-Cas9 multiplexability can be as high as 62 and demonstrates the possibility that PERVs can be inactivated for clinical application of porcine-to-human xenotransplantation.
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Affiliation(s)
- Luhan Yang
- Department of Genetics, Harvard Medical School, Boston, MA, USA. Wyss Institute for Biologically Inspired Engineering, Harvard University, Cambridge, MA, USA. eGenesis Biosciences, Boston, MA 02115, USA.
| | - Marc Güell
- Department of Genetics, Harvard Medical School, Boston, MA, USA. Wyss Institute for Biologically Inspired Engineering, Harvard University, Cambridge, MA, USA. eGenesis Biosciences, Boston, MA 02115, USA
| | - Dong Niu
- Department of Genetics, Harvard Medical School, Boston, MA, USA. College of Animal Sciences, Zhejiang University, Hangzhou 310058, China
| | - Haydy George
- Department of Genetics, Harvard Medical School, Boston, MA, USA
| | - Emal Lesha
- Department of Genetics, Harvard Medical School, Boston, MA, USA
| | - Dennis Grishin
- Department of Genetics, Harvard Medical School, Boston, MA, USA
| | - John Aach
- Department of Genetics, Harvard Medical School, Boston, MA, USA
| | - Ellen Shrock
- Department of Genetics, Harvard Medical School, Boston, MA, USA
| | - Weihong Xu
- Department of Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Jürgen Poci
- Department of Genetics, Harvard Medical School, Boston, MA, USA
| | - Rebeca Cortazio
- Department of Genetics, Harvard Medical School, Boston, MA, USA
| | - Robert A Wilkinson
- Transplant Infectious Disease and Compromised Host Program, Massachusetts General Hospital, Boston, MA 02115, USA
| | - Jay A Fishman
- Transplant Infectious Disease and Compromised Host Program, Massachusetts General Hospital, Boston, MA 02115, USA
| | - George Church
- Department of Genetics, Harvard Medical School, Boston, MA, USA. Wyss Institute for Biologically Inspired Engineering, Harvard University, Cambridge, MA, USA. eGenesis Biosciences, Boston, MA 02115, USA.
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