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Sun Y, Shim WJ, Shen S, Sinniah E, Pham D, Su Z, Mizikovsky D, White MD, Ho JK, Nguyen Q, Bodén M, Palpant N. Inferring cell diversity in single cell data using consortium-scale epigenetic data as a biological anchor for cell identity. Nucleic Acids Res 2023; 51:e62. [PMID: 37125641 PMCID: PMC10287941 DOI: 10.1093/nar/gkad307] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Accepted: 04/28/2023] [Indexed: 05/02/2023] Open
Abstract
Methods for cell clustering and gene expression from single-cell RNA sequencing (scRNA-seq) data are essential for biological interpretation of cell processes. Here, we present TRIAGE-Cluster which uses genome-wide epigenetic data from diverse bio-samples to identify genes demarcating cell diversity in scRNA-seq data. By integrating patterns of repressive chromatin deposited across diverse cell types with weighted density estimation, TRIAGE-Cluster determines cell type clusters in a 2D UMAP space. We then present TRIAGE-ParseR, a machine learning method which evaluates gene expression rank lists to define gene groups governing the identity and function of cell types. We demonstrate the utility of this two-step approach using atlases of in vivo and in vitro cell diversification and organogenesis. We also provide a web accessible dashboard for analysis and download of data and software. Collectively, genome-wide epigenetic repression provides a versatile strategy to define cell diversity and study gene regulation of scRNA-seq data.
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Affiliation(s)
- Yuliangzi Sun
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD, Australia
| | - Woo Jun Shim
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD, Australia
| | - Sophie Shen
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD, Australia
| | - Enakshi Sinniah
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD, Australia
| | - Duy Pham
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD, Australia
| | - Zezhuo Su
- School of Biomedical Sciences, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong SAR, China
- Laboratory of Data Discovery for Health Limited (D24H), Hong Kong Science Park, Hong Kong SAR, China
| | - Dalia Mizikovsky
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD, Australia
| | - Melanie D White
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD, Australia
| | - Joshua W K Ho
- School of Biomedical Sciences, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong SAR, China
- Laboratory of Data Discovery for Health Limited (D24H), Hong Kong Science Park, Hong Kong SAR, China
| | - Quan Nguyen
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD, Australia
| | - Mikael Bodén
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, QLD, Australia
| | - Nathan J Palpant
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD, Australia
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2
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Sinniah E, Wu Z, Shen S, Naval-Sanchez M, Chen X, Lim J, Helfer A, Iyer A, Tng J, Lucke AJ, Reid RC, Redd MA, Nefzger CM, Fairlie DP, Palpant NJ. Temporal perturbation of histone deacetylase activity reveals a requirement for HDAC1-3 in mesendoderm cell differentiation. Cell Rep 2022; 39:110818. [PMID: 35584683 DOI: 10.1016/j.celrep.2022.110818] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2021] [Revised: 03/22/2022] [Accepted: 04/20/2022] [Indexed: 11/03/2022] Open
Abstract
Histone deacetylases (HDACs) are a class of enzymes that control chromatin state and influence cell fate. We evaluated the chromatin accessibility and transcriptome dynamics of zinc-containing HDACs during cell differentiation in vitro coupled with chemical perturbation to identify the role of HDACs in mesendoderm cell fate specification. Single-cell RNA sequencing analyses of HDAC expression during human pluripotent stem cell (hPSC) differentiation in vitro and mouse gastrulation in vivo reveal a unique association of HDAC1 and -3 with mesendoderm gene programs during exit from pluripotency. Functional perturbation with small molecules reveals that inhibition of HDAC1 and -3, but not HDAC2, induces mesoderm while impeding endoderm and early cardiac progenitor specification. These data identify unique biological functions of the structurally homologous enzymes HDAC1-3 in influencing hPSC differentiation from pluripotency toward mesendodermal and cardiac progenitor populations.
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Affiliation(s)
- Enakshi Sinniah
- Institute for Molecular Bioscience, University of Queensland, Brisbane, QLD, Australia
| | - Zhixuan Wu
- Institute for Molecular Bioscience, University of Queensland, Brisbane, QLD, Australia
| | - Sophie Shen
- Institute for Molecular Bioscience, University of Queensland, Brisbane, QLD, Australia
| | - Marina Naval-Sanchez
- Institute for Molecular Bioscience, University of Queensland, Brisbane, QLD, Australia
| | - Xiaoli Chen
- Institute for Molecular Bioscience, University of Queensland, Brisbane, QLD, Australia
| | - Junxian Lim
- Institute for Molecular Bioscience, University of Queensland, Brisbane, QLD, Australia; ARC Centre of Excellence for Advanced Molecular Imaging, Institute for Molecular Bioscience, University of Queensland, Brisbane, QLD 4072, Australia
| | - Abbigail Helfer
- Institute for Molecular Bioscience, University of Queensland, Brisbane, QLD, Australia
| | - Abishek Iyer
- Institute for Molecular Bioscience, University of Queensland, Brisbane, QLD, Australia; ARC Centre of Excellence for Advanced Molecular Imaging, Institute for Molecular Bioscience, University of Queensland, Brisbane, QLD 4072, Australia
| | - Jiahui Tng
- Institute for Molecular Bioscience, University of Queensland, Brisbane, QLD, Australia; ARC Centre of Excellence for Advanced Molecular Imaging, Institute for Molecular Bioscience, University of Queensland, Brisbane, QLD 4072, Australia
| | - Andrew J Lucke
- Institute for Molecular Bioscience, University of Queensland, Brisbane, QLD, Australia; ARC Centre of Excellence for Advanced Molecular Imaging, Institute for Molecular Bioscience, University of Queensland, Brisbane, QLD 4072, Australia
| | - Robert C Reid
- Institute for Molecular Bioscience, University of Queensland, Brisbane, QLD, Australia; ARC Centre of Excellence for Advanced Molecular Imaging, Institute for Molecular Bioscience, University of Queensland, Brisbane, QLD 4072, Australia
| | - Meredith A Redd
- Institute for Molecular Bioscience, University of Queensland, Brisbane, QLD, Australia
| | - Christian M Nefzger
- Institute for Molecular Bioscience, University of Queensland, Brisbane, QLD, Australia
| | - David P Fairlie
- Institute for Molecular Bioscience, University of Queensland, Brisbane, QLD, Australia; ARC Centre of Excellence for Advanced Molecular Imaging, Institute for Molecular Bioscience, University of Queensland, Brisbane, QLD 4072, Australia
| | - Nathan J Palpant
- Institute for Molecular Bioscience, University of Queensland, Brisbane, QLD, Australia.
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3
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Shen S, Sun Y, Matsumoto M, Shim WJ, Sinniah E, Wilson SB, Werner T, Wu Z, Bradford ST, Hudson J, Little MH, Powell J, Nguyen Q, Palpant NJ. Integrating single-cell genomics pipelines to discover mechanisms of stem cell differentiation. Trends Mol Med 2021; 27:1135-1158. [PMID: 34657800 DOI: 10.1016/j.molmed.2021.09.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [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: 06/07/2021] [Revised: 09/19/2021] [Accepted: 09/22/2021] [Indexed: 12/12/2022]
Abstract
Pluripotent stem cells underpin a growing sector that leverages their differentiation potential for research, industry, and clinical applications. This review evaluates the landscape of methods in single-cell transcriptomics that are enabling accelerated discovery in stem cell science. We focus on strategies for scaling stem cell differentiation through multiplexed single-cell analyses, for evaluating molecular regulation of cell differentiation using new analysis algorithms, and methods for integration and projection analysis to classify and benchmark stem cell derivatives against in vivo cell types. By discussing the available methods, comparing their strengths, and illustrating strategies for developing integrated analysis pipelines, we provide user considerations to inform their implementation and interpretation.
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Affiliation(s)
- Sophie Shen
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, Australia
| | - Yuliangzi Sun
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, Australia
| | - Maika Matsumoto
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, Australia
| | - Woo Jun Shim
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, Australia
| | - Enakshi Sinniah
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, Australia
| | - Sean B Wilson
- Murdoch Children's Research Institute, Melbourne, Australia
| | - Tessa Werner
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, Australia
| | - Zhixuan Wu
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, Australia
| | | | - James Hudson
- QIMR Berghofer Medical Research Institute, Brisbane, Australia
| | - Melissa H Little
- Murdoch Children's Research Institute, Melbourne, Australia; Department of Pediatrics, Faculty of Medicine, Dentistry and Health Sciences, University of Melbourne, Melbourne, Australia
| | - Joseph Powell
- Garvan-Weizmann Centre for Cellular Genomics, Garvan Institute of Medical Research, Sydney, Australia; UNSW Cellular Genomics Futures Institute, UNSW, Sydney, Australia
| | - Quan Nguyen
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, Australia
| | - Nathan J Palpant
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, Australia.
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4
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Kojic M, Gawda T, Gaik M, Begg A, Salerno-Kochan A, Kurniawan ND, Jones A, Drożdżyk K, Kościelniak A, Chramiec-Głąbik A, Hediyeh-Zadeh S, Kasherman M, Shim WJ, Sinniah E, Genovesi LA, Abrahamsen RK, Fenger CD, Madsen CG, Cohen JS, Fatemi A, Stark Z, Lunke S, Lee J, Hansen JK, Boxill MF, Keren B, Marey I, Saenz MS, Brown K, Alexander SA, Mureev S, Batzilla A, Davis MJ, Piper M, Bodén M, Burne THJ, Palpant NJ, Møller RS, Glatt S, Wainwright BJ. Elp2 mutations perturb the epitranscriptome and lead to a complex neurodevelopmental phenotype. Nat Commun 2021; 12:2678. [PMID: 33976153 PMCID: PMC8113450 DOI: 10.1038/s41467-021-22888-5] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [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: 05/31/2020] [Accepted: 03/24/2021] [Indexed: 02/03/2023] Open
Abstract
Intellectual disability (ID) and autism spectrum disorder (ASD) are the most common neurodevelopmental disorders and are characterized by substantial impairment in intellectual and adaptive functioning, with their genetic and molecular basis remaining largely unknown. Here, we identify biallelic variants in the gene encoding one of the Elongator complex subunits, ELP2, in patients with ID and ASD. Modelling the variants in mice recapitulates the patient features, with brain imaging and tractography analysis revealing microcephaly, loss of white matter tract integrity and an aberrant functional connectome. We show that the Elp2 mutations negatively impact the activity of the complex and its function in translation via tRNA modification. Further, we elucidate that the mutations perturb protein homeostasis leading to impaired neurogenesis, myelin loss and neurodegeneration. Collectively, our data demonstrate an unexpected role for tRNA modification in the pathogenesis of monogenic ID and ASD and define Elp2 as a key regulator of brain development.
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Affiliation(s)
- Marija Kojic
- The University of Queensland Diamantina Institute, Translational Research Institute, The University of Queensland, Brisbane, QLD, Australia
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD, Australia
| | - Tomasz Gawda
- Malopolska Centre of Biotechnology, Jagiellonian University, Krakow, Poland
| | - Monika Gaik
- Malopolska Centre of Biotechnology, Jagiellonian University, Krakow, Poland
| | - Alexander Begg
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD, Australia
| | - Anna Salerno-Kochan
- Malopolska Centre of Biotechnology, Jagiellonian University, Krakow, Poland
- Postgraduate School of Molecular Medicine, Warsaw, Poland
| | - Nyoman D Kurniawan
- Centre for Advanced Imaging, The University of Queensland, Brisbane, QLD, Australia
| | - Alun Jones
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD, Australia
| | - Katarzyna Drożdżyk
- Malopolska Centre of Biotechnology, Jagiellonian University, Krakow, Poland
| | - Anna Kościelniak
- Malopolska Centre of Biotechnology, Jagiellonian University, Krakow, Poland
| | | | - Soroor Hediyeh-Zadeh
- Bioinformatics Division, Walter and Eliza Hall Institute of Medical Research, Melbourne, VIC, Australia
- Department of Medical Biology, Faculty of Medicine, Dentistry and Health Sciences, The University of Melbourne, Melbourne, VIC, Australia
| | - Maria Kasherman
- School of Biomedical Sciences, The University of Queensland, Brisbane, QLD, Australia
| | - Woo Jun Shim
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD, Australia
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, QLD, Australia
| | - Enakshi Sinniah
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD, Australia
| | - Laura A Genovesi
- The University of Queensland Diamantina Institute, Translational Research Institute, The University of Queensland, Brisbane, QLD, Australia
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD, Australia
| | - Rannvá K Abrahamsen
- Department of Epilepsy Genetics and Personalized Medicine, Danish Epilepsy Centre, Dianalund, Denmark
| | - Christina D Fenger
- Department of Epilepsy Genetics and Personalized Medicine, Danish Epilepsy Centre, Dianalund, Denmark
| | - Camilla G Madsen
- Centre for Functional and Diagnostic Imaging and Research, Hvidovre Hospital, Hvidovre, Denmark
| | - Julie S Cohen
- Department of Neurology and Developmental Medicine, Division of Neurogenetics, Kennedy Krieger Institute, Baltimore, MD, USA
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Ali Fatemi
- Department of Neurology and Developmental Medicine, Division of Neurogenetics, Kennedy Krieger Institute, Baltimore, MD, USA
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD, USA
- Department of Pediatrics, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Zornitza Stark
- Department of Paediatrics, The University of Melbourne, Melbourne, VIC, Australia
- Victorian Clinical Genetics Services, Murdoch Children's Research Institute, Melbourne, VIC, Australia
- Australian Genomics Health Alliance, Parkville, VIC, Australia
| | - Sebastian Lunke
- Victorian Clinical Genetics Services, Murdoch Children's Research Institute, Melbourne, VIC, Australia
- Australian Genomics Health Alliance, Parkville, VIC, Australia
- The University of Melbourne, Melbourne, VIC, Australia
| | - Joy Lee
- Department of Paediatrics, The University of Melbourne, Melbourne, VIC, Australia
- Department of Metabolic Medicine, Royal Children's Hospital, Parkville, VIC, Australia
| | - Jonas K Hansen
- Department of Paediatrics, Regional Hospital Viborg, Viborg, Denmark
| | - Martin F Boxill
- Department of Paediatrics, Regional Hospital Viborg, Viborg, Denmark
| | - Boris Keren
- Department of Genetics, Pitié-Salpêtrière Hospital, AP-HP, Paris, France
| | - Isabelle Marey
- Department of Genetics, Pitié-Salpêtrière Hospital, AP-HP, Paris, France
| | - Margarita S Saenz
- The University of Colorado Anschutz, Children's Hospital Colorado, Aurora, CO, USA
| | - Kathleen Brown
- The University of Colorado Anschutz, Children's Hospital Colorado, Aurora, CO, USA
| | - Suzanne A Alexander
- Queensland Brain Institute, The University of Queensland, Brisbane, QLD, Australia
- Queensland Centre for Mental Health Research, The Park Centre for Mental Health, Brisbane, QLD, Australia
| | - Sergey Mureev
- CSIRO-QUT Synthetic Biology Alliance, Centre for Tropical Crops and Bio-commodities, Queensland University of Technology, Brisbane, QLD, Australia
| | - Alina Batzilla
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD, Australia
- The Ruprecht Karl University of Heidelberg, Heidelberg, Germany
| | - Melissa J Davis
- Bioinformatics Division, Walter and Eliza Hall Institute of Medical Research, Melbourne, VIC, Australia
- Department of Medical Biology, Faculty of Medicine, Dentistry and Health Sciences, The University of Melbourne, Melbourne, VIC, Australia
- Department of Clinical Pathology, Faculty of Medicine, Dentistry and Health Sciences, The University of Melbourne, Melbourne, VIC, Australia
| | - Michael Piper
- School of Biomedical Sciences, The University of Queensland, Brisbane, QLD, Australia
| | - Mikael Bodén
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, QLD, Australia
| | - Thomas H J Burne
- Queensland Brain Institute, The University of Queensland, Brisbane, QLD, Australia
- Queensland Centre for Mental Health Research, The Park Centre for Mental Health, Brisbane, QLD, Australia
| | - Nathan J Palpant
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD, Australia
| | - Rikke S Møller
- Department of Epilepsy Genetics and Personalized Medicine, Danish Epilepsy Centre, Dianalund, Denmark
- Department for Regional Health Research, The University of Southern Denmark, Odense, Denmark
| | - Sebastian Glatt
- Malopolska Centre of Biotechnology, Jagiellonian University, Krakow, Poland.
| | - Brandon J Wainwright
- The University of Queensland Diamantina Institute, Translational Research Institute, The University of Queensland, Brisbane, QLD, Australia.
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD, Australia.
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5
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Shim WJ, Sinniah E, Xu J, Vitrinel B, Alexanian M, Andreoletti G, Shen S, Sun Y, Balderson B, Boix C, Peng G, Jing N, Wang Y, Kellis M, Tam PPL, Smith A, Piper M, Christiaen L, Nguyen Q, Bodén M, Palpant NJ. Conserved Epigenetic Regulatory Logic Infers Genes Governing Cell Identity. Cell Syst 2020; 11:625-639.e13. [PMID: 33278344 PMCID: PMC7781436 DOI: 10.1016/j.cels.2020.11.001] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [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: 03/16/2020] [Revised: 08/31/2020] [Accepted: 11/09/2020] [Indexed: 01/06/2023]
Abstract
Determining genes that orchestrate cell differentiation in development and disease remains a fundamental goal of cell biology. This study establishes a genome-wide metric based on the gene-repressive trimethylation of histone H3 at lysine 27 (H3K27me3) across hundreds of diverse cell types to identify genetic regulators of cell differentiation. We introduce a computational method, TRIAGE, which uses discordance between gene-repressive tendency and expression to identify genetic drivers of cell identity. We apply TRIAGE to millions of genome-wide single-cell transcriptomes, diverse omics platforms, and eukaryotic cells and tissue types. Using a wide range of data, we validate the performance of TRIAGE in identifying cell-type-specific regulatory factors across diverse species including human, mouse, boar, bird, fish, and tunicate. Using CRISPR gene editing, we use TRIAGE to experimentally validate RNF220 as a regulator of Ciona cardiopharyngeal development and SIX3 as required for differentiation of endoderm in human pluripotent stem cells. A record of this paper’s transparent peer review process is included in the Supplemental Information. Perturbing genes controlling cell decisions have major implications in development or disease. However, identifying key regulatory genes from the thousands expressed in a cell is challenging. TRIAGE is a computational method that distills patterns of epigenetic repression across diverse cell types to infer regulatory genes using input gene expression data from any cell type. Demonstrating its utility, we combine single-cell RNA-seq and TRIAGE to identify and experimentally confirm novel regulators of heart development in evolutionarily distant species.
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Affiliation(s)
- Woo Jun Shim
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, Australia
| | - Enakshi Sinniah
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, Australia
| | - Jun Xu
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, Australia
| | - Burcu Vitrinel
- Center for Developmental Genetics, Department of Biology, New York University, New York, NY, USA
| | - Michael Alexanian
- Gladstone Institute of Cardiovascular Disease, San Francisco, CA, USA
| | - Gaia Andreoletti
- Institute for Computational Health Sciences, University of California, San Francisco, CA 94158, USA
| | - Sophie Shen
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, Australia
| | - Yuliangzi Sun
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, Australia
| | - Brad Balderson
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, Australia
| | - Carles Boix
- Broad Institute of MIT and Harvard, Cambridge, MA, USA
| | - Guangdun Peng
- CAS Key Laboratory of Regenerative Biology, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, University of Chinese Academy of Sciences and Bioland Laboratory (Guangzhou Regenerative Medicine and Health Guangdong Laboratory), Guangzhou, China; State Key Laboratory of Cell Biology, CAS Center for Excellence in Molecular Cell Science, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai, China
| | - Naihe Jing
- CAS Key Laboratory of Regenerative Biology, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, University of Chinese Academy of Sciences and Bioland Laboratory (Guangzhou Regenerative Medicine and Health Guangdong Laboratory), Guangzhou, China; State Key Laboratory of Cell Biology, CAS Center for Excellence in Molecular Cell Science, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai, China
| | - Yuliang Wang
- Paul G. Allen School of Computer Science and Engineering and Institute for Stem Cell & Regenerative Medicine, University of Washington, Seattle, WA, USA
| | | | - Patrick P L Tam
- The University of Sydney, Children's Medical Research Institute, and School of Medical Sciences, Faculty of Medicine and Health, Westmead, NSW 2145, Australia
| | - Aaron Smith
- Institute of Health and Biomedical Innovation, School of Biomedical Sciences, Queensland University of Technology, Brisbane, Australia; Translational Research Institute, Woolloongabba, Brisbane, Australia
| | - Michael Piper
- School of Biomedical Sciences, The University of Queensland, Brisbane, Australia; Queensland Brain Institute, The University of Queensland, Brisbane, Australia
| | - Lionel Christiaen
- Center for Developmental Genetics, Department of Biology, New York University, New York, NY, USA
| | - Quan Nguyen
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, Australia
| | - Mikael Bodén
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, Australia.
| | - Nathan J Palpant
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, Australia.
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