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Lombard P, Zaidi M, Mansouri S, Zadeh G, Wouters B. Spatial transcriptomics analysis for spatial biomarker discovery in glioblastoma. Eur J Cancer 2022. [DOI: 10.1016/s0959-8049(22)01123-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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2
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Cottone L, Cribbs AP, Khandelwal G, Wells G, Ligammari L, Philpott M, Tumber A, Lombard P, Hookway ES, Szommer T, Johansson C, Brennan PE, Pillay N, Jenner RG, Oppermann U, Flanagan AM. Inhibition of Histone H3K27 Demethylases Inactivates Brachyury (TBXT) and Promotes Chordoma Cell Death. Cancer Res 2020; 80:4540-4551. [PMID: 32855205 DOI: 10.1158/0008-5472.can-20-1387] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [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: 04/25/2020] [Revised: 07/08/2020] [Accepted: 08/19/2020] [Indexed: 11/16/2022]
Abstract
Expression of the transcription factor brachyury (TBXT) is normally restricted to the embryo, and its silencing is epigenetically regulated. TBXT promotes mesenchymal transition in a subset of common carcinomas, and in chordoma, a rare cancer showing notochordal differentiation, TBXT acts as a putative oncogene. We hypothesized that TBXT expression is controlled through epigenetic inhibition to promote chordoma cell death. Screening of five human chordoma cell lines revealed that pharmacologic inhibition of the histone 3 lysine 27 demethylases KDM6A (UTX) and KDM6B (JMJD3) leads to cell death. This effect was phenocopied by dual genetic inactivation of KDM6A/B using CRISPR/Cas9. Inhibition of KDM6A/B with a novel compound KDOBA67 led to a genome-wide increase in repressive H3K27me3 marks with concomitant reduction in active H3K27ac, H3K9ac, and H3K4me3 marks. TBXT was a KDM6A/B target gene, and chromatin changes at TBXT following KDOBA67 treatment were associated with a reduction in TBXT protein levels in all models tested, including primary patient-derived cultures. In all models tested, KDOBA67 treatment downregulated expression of a network of transcription factors critical for chordoma survival and upregulated pathways dominated by ATF4-driven stress and proapoptotic responses. Blocking the AFT4 stress response did not prevent suppression of TBXT and induction of cell death, but ectopic overexpression of TBXT increased viability, therefore implicating TBXT as a potential therapeutic target of H3K27 demethylase inhibitors in chordoma. Our work highlights how knowledge of normal processes in fetal development can provide insight into tumorigenesis and identify novel therapeutic approaches. SIGNIFICANCE: Pharmacologic inhibition of H3K27-demethylases in human chordoma cells promotes epigenetic silencing of oncogenic TBXT, alters gene networks critical to survival, and represents a potential novel therapy.
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Affiliation(s)
- Lucia Cottone
- Department of Pathology, UCL Cancer Institute, University College London, London, United Kingdom
| | - Adam P Cribbs
- Botnar Research Centre, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, United Kingdom
| | - Garima Khandelwal
- Department of Cancer Biology, UCL Cancer Institute, University College London, London, United Kingdom
| | - Graham Wells
- Botnar Research Centre, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, United Kingdom
| | - Lorena Ligammari
- Department of Pathology, UCL Cancer Institute, University College London, London, United Kingdom
| | - Martin Philpott
- Botnar Research Centre, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, United Kingdom
| | - Anthony Tumber
- Structural Genomics Consortium, University of Oxford, Oxford, United Kingdom
| | - Patrick Lombard
- Department of Pathology, UCL Cancer Institute, University College London, London, United Kingdom
| | - Edward S Hookway
- Department of Pathology, UCL Cancer Institute, University College London, London, United Kingdom
- Botnar Research Centre, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, United Kingdom
| | - Tamas Szommer
- Structural Genomics Consortium, University of Oxford, Oxford, United Kingdom
| | - Catrine Johansson
- Botnar Research Centre, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, United Kingdom
| | - Paul E Brennan
- Structural Genomics Consortium, University of Oxford, Oxford, United Kingdom
| | - Nischalan Pillay
- Department of Pathology, UCL Cancer Institute, University College London, London, United Kingdom
- Department of Histopathology, Royal National Orthopaedic Hospital, Stanmore, Middlesex, United Kingdom
| | - Richard G Jenner
- Department of Cancer Biology, UCL Cancer Institute, University College London, London, United Kingdom
| | - Udo Oppermann
- Botnar Research Centre, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, United Kingdom.
- Structural Genomics Consortium, University of Oxford, Oxford, United Kingdom
- FRIAS - Freiburg Institute of Advanced Studies, University of Freiburg, Freiburg, Germany
| | - Adrienne M Flanagan
- Department of Pathology, UCL Cancer Institute, University College London, London, United Kingdom.
- Department of Histopathology, Royal National Orthopaedic Hospital, Stanmore, Middlesex, United Kingdom
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Fittall MW, Lyskjaer I, Ellery P, Lombard P, Ijaz J, Strobl AC, Oukrif D, Tarabichi M, Sill M, Koelsche C, Mechtersheimer G, Demeulemeester J, Tirabosco R, Amary F, Campbell PJ, Pfister SM, Jones DT, Pillay N, Van Loo P, Behjati S, Flanagan AM. Drivers underpinning the malignant transformation of giant cell tumour of bone. J Pathol 2020; 252:433-440. [PMID: 32866294 PMCID: PMC8432151 DOI: 10.1002/path.5537] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Revised: 07/29/2020] [Accepted: 08/20/2020] [Indexed: 02/02/2023]
Abstract
The rare benign giant cell tumour of bone (GCTB) is defined by an almost unique mutation in the H3.3 family of histone genes H3‐3A or H3‐3B; however, the same mutation is occasionally found in primary malignant bone tumours which share many features with the benign variant. Moreover, lung metastases can occur despite the absence of malignant histological features in either the primary or metastatic lesions. Herein we investigated the genetic events of 17 GCTBs including benign and malignant variants and the methylation profiles of 122 bone tumour samples including GCTBs. Benign GCTBs possessed few somatic alterations and no other known drivers besides the H3.3 mutation, whereas all malignant tumours harboured at least one additional driver mutation and exhibited genomic features resembling osteosarcomas, including high mutational burden, additional driver event(s), and a high degree of aneuploidy. The H3.3 mutation was found to predate the development of aneuploidy. In contrast to osteosarcomas, malignant H3.3‐mutated tumours were enriched for a variety of alterations involving TERT, other than amplification, suggesting telomere dysfunction in the transformation of benign to malignant GCTB. DNA sequencing of the benign metastasising GCTB revealed no additional driver alterations; polyclonal seeding in the lung was identified, implying that the metastatic lesions represent an embolic event. Unsupervised clustering of DNA methylation profiles revealed that malignant H3.3‐mutated tumours are distinct from their benign counterpart, and other bone tumours. Differential methylation analysis identified CCND1, encoding cyclin D1, as a plausible cancer driver gene in these tumours because hypermethylation of the CCND1 promoter was specific for GCTBs. We report here the genomic and methylation patterns underlying the rare clinical phenomena of benign metastasising and malignant transformation of GCTB and show how the combination of genomic and epigenomic findings could potentially distinguish benign from malignant GCTBs, thereby predicting aggressive behaviour in challenging diagnostic cases. © 2020 The Authors. The Journal of Pathology published by John Wiley & Sons, Ltd. on behalf of The Pathological Society of Great Britain and Ireland.
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Affiliation(s)
- Matthew W Fittall
- The Francis Crick Institute, London, UK.,Department of Pathology (research), University College London Cancer Institute, London, UK.,Cancer, Ageing and Somatic Mutation, Wellcome Trust Sanger Institute, Hinxton, UK
| | - Iben Lyskjaer
- Department of Pathology (research), University College London Cancer Institute, London, UK.,Department of Molecular Medicine, Aarhus Universitet, Aarhus, Denmark
| | - Peter Ellery
- Department of Pathology (research), University College London Cancer Institute, London, UK.,Department of Cellular Pathology, University College London NHS Trust, London, UK
| | - Patrick Lombard
- Department of Pathology (research), University College London Cancer Institute, London, UK
| | - Jannat Ijaz
- Cancer, Ageing and Somatic Mutation, Wellcome Trust Sanger Institute, Hinxton, UK
| | - Anna-Christina Strobl
- Department of Histopathology, Royal National Orthopaedic Hospital NHS Trust, Stanmore, UK
| | - Dahmane Oukrif
- Department of Pathology (research), University College London Cancer Institute, London, UK
| | - Maxime Tarabichi
- The Francis Crick Institute, London, UK.,Cancer, Ageing and Somatic Mutation, Wellcome Trust Sanger Institute, Hinxton, UK
| | - Martin Sill
- Hopp Children's Cancer Center Heidelberg (KiTZ), Heidelberg, Germany.,Division of Pediatric Neurooncology, German Cancer Research Center (DKFZ) and German Cancer Consortium (DKTK), Heidelberg, Germany
| | - Christian Koelsche
- Institute of Pathology, University Hospital Heidelberg, Heidelberg, Germany
| | | | - Jonas Demeulemeester
- The Francis Crick Institute, London, UK.,Department of Human Genetics, University of Leuven, Leuven, Belgium
| | - Roberto Tirabosco
- Department of Histopathology, Royal National Orthopaedic Hospital NHS Trust, Stanmore, UK
| | - Fernanda Amary
- Department of Histopathology, Royal National Orthopaedic Hospital NHS Trust, Stanmore, UK
| | - Peter J Campbell
- Cancer, Ageing and Somatic Mutation, Wellcome Trust Sanger Institute, Hinxton, UK
| | - Stefan M Pfister
- Hopp Children's Cancer Center Heidelberg (KiTZ), Heidelberg, Germany.,Division of Pediatric Neurooncology, German Cancer Research Center (DKFZ) and German Cancer Consortium (DKTK), Heidelberg, Germany.,Department of Pediatric Hematology and Oncology, University Hospital Heidelberg, Heidelberg, Germany
| | - David Tw Jones
- Department of Pediatric Hematology and Oncology, University Hospital Heidelberg, Heidelberg, Germany.,Pediatric Glioma Research Group, German Cancer Consortium (DKTK), German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Nischalan Pillay
- Department of Pathology (research), University College London Cancer Institute, London, UK.,Department of Histopathology, Royal National Orthopaedic Hospital NHS Trust, Stanmore, UK
| | - Peter Van Loo
- The Francis Crick Institute, London, UK.,Department of Human Genetics, University of Leuven, Leuven, Belgium
| | - Sam Behjati
- Cancer, Ageing and Somatic Mutation, Wellcome Trust Sanger Institute, Hinxton, UK.,Department of Paediatrics, University of Cambridge, Cambridge, UK
| | - Adrienne M Flanagan
- Department of Pathology (research), University College London Cancer Institute, London, UK.,Department of Histopathology, Royal National Orthopaedic Hospital NHS Trust, Stanmore, UK
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Lyskjaer I, Lindsay D, Tirabosco R, Steele CD, Lombard P, Strobl AC, Rocha AM, Davies C, Ye H, Bekers E, Ingruber J, Lechner M, Amary F, Pillay N, Flanagan AM. H3K27me3 expression and methylation status in histological variants of malignant peripheral nerve sheath tumours. J Pathol 2020; 252:151-164. [PMID: 32666581 PMCID: PMC8432159 DOI: 10.1002/path.5507] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2020] [Revised: 06/23/2020] [Accepted: 07/06/2020] [Indexed: 12/17/2022]
Abstract
Diagnosing MPNST can be challenging, but genetic alterations recently identified in polycomb repressive complex 2 (PRC2) core component genes, EED and SUZ12, resulting in global loss of the histone 3 lysine 27 trimethylation (H3K27me3) epigenetic mark, represent drivers of malignancy and a valuable diagnostic tool. However, the reported loss of H3K27me3 expression ranges from 35% to 84%. We show that advances in molecular pathology now allow many MPNST mimics to be classified confidently. We confirm that MPNSTs harbouring mutations in PRC2 core components are associated with loss of H3K27me3 expression; whole‐genome doubling was detected in 68%, and SSTR2 was amplified in 32% of MPNSTs. We demonstrate that loss of H3K27me3 expression occurs overall in 38% of MPNSTs, but is lost in 76% of histologically classical cases, whereas loss was detected in only 23% cases with heterologous elements and 14% where the diagnosis could not be provided on morphology alone. H3K27me3 loss is rarely seen in other high‐grade sarcomas and was not found to be associated with an inferior outcome in MPNST. We show that DNA methylation profiling distinguishes MPNST from its histological mimics, was unrelated to anatomical site, and formed two main clusters, MeGroups 4 and 5. MeGroup 4 represents classical MPNSTs lacking H3K27me3 expression in the majority of cases, whereas MeGroup 5 comprises MPNSTs exhibiting non‐classical histology and expressing H3K27me3 and cluster with undifferentiated sarcomas. The two MeGroups are distinguished by differentially methylated PRC2‐associated genes, the majority of which are hypermethylated in the promoter regions in MeGroup 4, indicating that the PRC2 target genes are not expressed in these tumours. The methylation profiles of MPNSTs with retention of H3K27me3 in MeGroups 4 and 5 are independent of mutations in PRC2 core components and the driver(s) in these groups remain to be identified. Our results open new avenues of investigation. © 2020 The Authors. The Journal of Pathology published by John Wiley & Sons, Ltd. on behalf of The Pathological Society of Great Britain and Ireland.
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Affiliation(s)
- Iben Lyskjaer
- Research Department of Pathology, University College London, London, UK
| | - Daniel Lindsay
- Research Department of Pathology, University College London, London, UK.,Department of Histopathology, Royal National Orthopaedic Hospital, Stanmore, UK
| | - Roberto Tirabosco
- Department of Histopathology, Royal National Orthopaedic Hospital, Stanmore, UK
| | | | - Patrick Lombard
- Research Department of Pathology, University College London, London, UK
| | | | - Ana M Rocha
- Department of Histopathology, Royal National Orthopaedic Hospital, Stanmore, UK
| | - Christopher Davies
- Department of Histopathology, Royal National Orthopaedic Hospital, Stanmore, UK
| | - Hongtao Ye
- Department of Histopathology, Royal National Orthopaedic Hospital, Stanmore, UK
| | - Elise Bekers
- Department of Pathology, Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - Julia Ingruber
- Department of Otorhinolaryngology, Medical University of Innsbruck, Innsbruck, Austria
| | - Matt Lechner
- UCL Cancer Institute, University College London, London, UK
| | - Fernanda Amary
- Research Department of Pathology, University College London, London, UK.,Department of Histopathology, Royal National Orthopaedic Hospital, Stanmore, UK
| | - Nischalan Pillay
- Research Department of Pathology, University College London, London, UK.,Department of Histopathology, Royal National Orthopaedic Hospital, Stanmore, UK
| | - Adrienne M Flanagan
- Research Department of Pathology, University College London, London, UK.,Department of Histopathology, Royal National Orthopaedic Hospital, Stanmore, UK
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Cottone L, Eden N, Usher I, Lombard P, Ye H, Ligammari L, Lindsay D, Brandner S, Pižem J, Pillay N, Tirabosco R, Amary F, Flanagan AM. Frequent alterations in p16/CDKN2A identified by immunohistochemistry and FISH in chordoma. J Pathol Clin Res 2020; 6:113-123. [PMID: 31916407 PMCID: PMC7164370 DOI: 10.1002/cjp2.156] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/11/2019] [Revised: 12/13/2019] [Accepted: 12/18/2019] [Indexed: 12/19/2022]
Abstract
The expression of p16/CDKN2A, the second most commonly inactivated tumour suppressor gene in cancer, is lost in the majority of chordomas. However, the mechanism(s) leading to its inactivation and contribution to disease progression have only been partially addressed using small patient cohorts. We studied 384 chordoma samples from 320 patients by immunohistochemistry and found that p16 protein was lost in 53% of chordomas and was heterogeneously expressed in these tumours. To determine if CDKN2A copy number loss could explain the absence of p16 protein expression we performed fluorescence in situ hybridisation (FISH) for CDKN2A on consecutive tissue sections. CDKN2A copy number status was altered in 168 of 274 (61%) of samples and copy number loss was the most frequent alteration acquired during clinical disease progression. CDKN2A homozygous deletion was always associated with p16 protein loss but only accounted for 33% of the p16‐negative cases. The remaining immunonegative cases were associated with disomy (27%), monosomy (12%), heterozygous loss (20%) and copy number gain (7%) of CDKN2A, supporting the hypothesis that loss of protein expression might be achieved via epigenetic or post‐transcriptional regulatory mechanisms. We identified that mRNA levels were comparable in tumours with and without p16 protein expression, but other events including DNA promoter hypermethylation, copy number neutral loss of heterozygosity and expression of candidate microRNAs previously implicated in the regulation of CDKN2A expression were not identified to explain the protein loss. The data argue that p16 loss in chordoma is commonly caused by a post‐transcriptional regulatory mechanism that is yet to be defined.
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Affiliation(s)
- Lucia Cottone
- UCL Cancer Institute, University College London, London, UK
| | - Nadia Eden
- UCL Cancer Institute, University College London, London, UK
| | - Inga Usher
- UCL Cancer Institute, University College London, London, UK
| | | | - Hongtao Ye
- Department of Histopathology, Royal National Orthopaedic Hospital, Stanmore, UK
| | | | - Daniel Lindsay
- Department of Histopathology, Royal National Orthopaedic Hospital, Stanmore, UK
| | - Sebastian Brandner
- UCL Queen Square Institute of Neurology, University College London, London, UK.,Division of Neuropathology, The National Hospital for Neurology and Neurosurgery, University College Hospitals NHS Foundation Trust, London, UK
| | - Jože Pižem
- Institute of Pathology, University of Ljubljana, Faculty of Medicine, Ljubljana, Slovenia
| | - Nischalan Pillay
- UCL Cancer Institute, University College London, London, UK.,Department of Histopathology, Royal National Orthopaedic Hospital, Stanmore, UK
| | - Roberto Tirabosco
- Department of Histopathology, Royal National Orthopaedic Hospital, Stanmore, UK
| | - Fernanda Amary
- UCL Cancer Institute, University College London, London, UK.,Department of Histopathology, Royal National Orthopaedic Hospital, Stanmore, UK
| | - Adrienne M Flanagan
- UCL Cancer Institute, University College London, London, UK.,Department of Histopathology, Royal National Orthopaedic Hospital, Stanmore, UK
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Abstract
Background: NANOG is a homeodomain-containing transcription factor which forms one of the hubs in the pluripotency network and plays a key role in the reprogramming of somatic cells and epiblast stem cells to naïve pluripotency. Studies have found that NANOG has many interacting partners and some of these were shown to play a role in its ability to mediate reprogramming. In this study, we set out to analyse the effect of NANOG interactors on the reprogramming process. Methods: Epiblast stem cells and somatic cells were reprogrammed to naïve pluripotency using MEK/ERK inhibitor PD0325901, GSK3β inhibitor CHIR99021 and Leukaemia Inhibitory Factor (together termed 2i Plus LIF). Zmym2 was knocked out using the CRISPR/Cas9 system or overexpressed using the PiggyBac system. Reprogramming was quantified after ZMYM2 deletion or overexpression, in diverse reprogramming systems. In addition, embryonic stem cell self renewal was quantified in differentiation assays after ZMYM2 removal or overexpression. Results: In this work, we identified ZMYM2/ZFP198, which physically associates with NANOG as a key negative regulator of NANOG-mediated reprogramming of both epiblast stem cells and somatic cells. In addition, ZMYM2 impairs the self renewal of embryonic stem cells and its overexpression promotes differentiation. Conclusions: We propose that ZMYM2 curtails NANOG's actions during the reprogramming of both somatic cells and epiblast stem cells and impedes embryonic stem cell self renewal, promoting differentiation.
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Affiliation(s)
- Moyra Lawrence
- Wellcome-MRC Cambridge Stem Cell Institute, University of Cambridge, Cambridge, Cambridgeshire, CB2 1QR, UK
- Department of Biochemistry, University of Cambridge, Cambridge, CB2 1QR, UK
| | - Thorold W. Theunissen
- Wellcome-MRC Cambridge Stem Cell Institute, University of Cambridge, Cambridge, Cambridgeshire, CB2 1QR, UK
- Department of Biochemistry, University of Cambridge, Cambridge, CB2 1QR, UK
- Department of Developmental Biology and Center of Regenerative Medicine, Washington University School of Medicine, St. Louis, MO, 63110, USA
| | - Patrick Lombard
- Wellcome-MRC Cambridge Stem Cell Institute, University of Cambridge, Cambridge, Cambridgeshire, CB2 1QR, UK
| | - David J. Adams
- Experimental Cancer Genetics, Wellcome Sanger Institute, Cambridge, CB10 1SA, UK
| | - José C. R. Silva
- Wellcome-MRC Cambridge Stem Cell Institute, University of Cambridge, Cambridge, Cambridgeshire, CB2 1QR, UK
- Department of Biochemistry, University of Cambridge, Cambridge, CB2 1QR, UK
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7
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Steele CD, Tarabichi M, Oukrif D, Webster AP, Ye H, Fittall M, Lombard P, Martincorena I, Tarpey PS, Collord G, Haase K, Strauss SJ, Berisha F, Vaikkinen H, Dhami P, Jansen M, Behjati S, Amary MF, Tirabosco R, Feber A, Campbell PJ, Alexandrov LB, Van Loo P, Flanagan AM, Pillay N. Undifferentiated Sarcomas Develop through Distinct Evolutionary Pathways. Cancer Cell 2019; 35:441-456.e8. [PMID: 30889380 PMCID: PMC6428691 DOI: 10.1016/j.ccell.2019.02.002] [Citation(s) in RCA: 59] [Impact Index Per Article: 11.8] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/15/2018] [Revised: 11/12/2018] [Accepted: 02/06/2019] [Indexed: 01/01/2023]
Abstract
Undifferentiated sarcomas (USARCs) of adults are diverse, rare, and aggressive soft tissue cancers. Recent sequencing efforts have confirmed that USARCs exhibit one of the highest burdens of structural aberrations across human cancer. Here, we sought to unravel the molecular basis of the structural complexity in USARCs by integrating DNA sequencing, ploidy analysis, gene expression, and methylation profiling. We identified whole genome duplication as a prevalent and pernicious force in USARC tumorigenesis. Using mathematical deconvolution strategies to unravel the complex copy-number profiles and mutational timing models we infer distinct evolutionary pathways of these rare cancers. In addition, 15% of tumors exhibited raised mutational burdens that correlated with gene expression signatures of immune infiltration, and good prognosis.
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Affiliation(s)
- Christopher D Steele
- Research Department of Pathology, Cancer Institute, University College London, London WC1E 6BT, UK
| | - Maxime Tarabichi
- Cancer Genomics Laboratory, The Francis Crick Institute, London NW1 1BF, UK
| | - Dahmane Oukrif
- Research Department of Pathology, Cancer Institute, University College London, London WC1E 6BT, UK
| | - Amy P Webster
- Department of Cancer Biology, UCL Cancer Institute, University College London, London, UK
| | - Hongtao Ye
- Department of Cellular and Molecular Pathology, Royal National Orthopaedic Hospital NHS Trust, Stanmore, Middlesex HA7 4LP, UK
| | - Matthew Fittall
- Cancer Genomics Laboratory, The Francis Crick Institute, London NW1 1BF, UK
| | - Patrick Lombard
- Research Department of Pathology, Cancer Institute, University College London, London WC1E 6BT, UK
| | - Iñigo Martincorena
- Cancer Genome Project, Wellcome Trust Sanger Institute, Wellcome Trust Genome Campus, Hinxton, Cambridgeshire CB10 1SA, UK
| | - Patrick S Tarpey
- Cancer Genome Project, Wellcome Trust Sanger Institute, Wellcome Trust Genome Campus, Hinxton, Cambridgeshire CB10 1SA, UK
| | - Grace Collord
- Cancer Genome Project, Wellcome Trust Sanger Institute, Wellcome Trust Genome Campus, Hinxton, Cambridgeshire CB10 1SA, UK
| | - Kerstin Haase
- Cancer Genomics Laboratory, The Francis Crick Institute, London NW1 1BF, UK
| | - Sandra J Strauss
- Research Department of Pathology, Cancer Institute, University College London, London WC1E 6BT, UK; Department of Oncology, University College London Hospital NHS Foundation Trust, London, NW1 2PG, UK
| | - Fitim Berisha
- Department of Cellular and Molecular Pathology, Royal National Orthopaedic Hospital NHS Trust, Stanmore, Middlesex HA7 4LP, UK
| | - Heli Vaikkinen
- Genomics and Genome Engineering Core Facility, CRUK-UCL Centre, Cancer Institute, University College London, London WC1E 6BT, UK; Research Department of Oncology, Cancer Institute, University College London, London WC1E 6BT, UK
| | - Pawan Dhami
- Genomics and Genome Engineering Core Facility, CRUK-UCL Centre, Cancer Institute, University College London, London WC1E 6BT, UK
| | - Marnix Jansen
- Research Department of Pathology, Cancer Institute, University College London, London WC1E 6BT, UK; Department of Cellular Pathology, University College London Hospital NHS Foundation Trust, London NW1 2BU, UK
| | - Sam Behjati
- Cancer Genome Project, Wellcome Trust Sanger Institute, Wellcome Trust Genome Campus, Hinxton, Cambridgeshire CB10 1SA, UK; Department of Paediatrics, University of Cambridge, Cambridge CB2 0QQ, UK
| | - M Fernanda Amary
- Department of Cellular and Molecular Pathology, Royal National Orthopaedic Hospital NHS Trust, Stanmore, Middlesex HA7 4LP, UK
| | - Roberto Tirabosco
- Department of Cellular and Molecular Pathology, Royal National Orthopaedic Hospital NHS Trust, Stanmore, Middlesex HA7 4LP, UK
| | - Andrew Feber
- Department of Targeted Intervention, Division of Surgery and Interventional Science, University College London, London WC1E 6BT, UK
| | - Peter J Campbell
- Cancer Genome Project, Wellcome Trust Sanger Institute, Wellcome Trust Genome Campus, Hinxton, Cambridgeshire CB10 1SA, UK; Department of Haematology, University of Cambridge, Hills Road, Cambridge CB2 2XY, UK
| | - Ludmil B Alexandrov
- Department of Cellular and Molecular Medicine, University of California, San Diego 92093, USA
| | - Peter Van Loo
- Cancer Genomics Laboratory, The Francis Crick Institute, London NW1 1BF, UK; Department of Human Genetics, University of Leuven, 3000 Leuven, Belgium
| | - Adrienne M Flanagan
- Research Department of Pathology, Cancer Institute, University College London, London WC1E 6BT, UK; Department of Cellular and Molecular Pathology, Royal National Orthopaedic Hospital NHS Trust, Stanmore, Middlesex HA7 4LP, UK
| | - Nischalan Pillay
- Research Department of Pathology, Cancer Institute, University College London, London WC1E 6BT, UK; Department of Cellular and Molecular Pathology, Royal National Orthopaedic Hospital NHS Trust, Stanmore, Middlesex HA7 4LP, UK.
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8
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Cottone L, Hookway E, Wells G, Ligammari L, Lombard P, Mazitschek R, Sommer J, Oppermann U, Flanagan AM. Abstract 1949: A compound screen reveals potential novel therapeutic targets for chordoma: Metabolic stress response and epigenetic control of brachyury. Cancer Res 2018. [DOI: 10.1158/1538-7445.am2018-1949] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Chordoma is a rare bone cancer, showing notochordal differentiation, that develops in axial skeleton in adults and children. Patients have a median survival of 7 years and radical surgical resection is the main treatment for this morbid disease, which does not respond to cytotoxic chemotherapy. We have previously demonstrated that EGFR inhibitors represent the almost unique family of kinase inhibitors to exert an effect on chordoma cell lines proliferation. However not all cell lines respond to these agents and drug resistance is likely to occur. Genomic studies have revealed that chordomas do not harbor recurrent alterations in kinases whereas chromatin-remodelling genes are altered in at least 20% of cases. The transcription factor brachyury (T) is the diagnostic hallmark of chordoma and is strongly implicated in its pathogenesis. T is regulated during embryonic development at the epigenetic level, suggesting that epigenetic inhibitors may represent a novel therapeutic approach for this disease. In this study, we have undertaken a medium throughput focused compound screen (n=91) using validated small molecule inhibitors of enzymes involved in chromatin biology and metabolic pathways. The alamar blue assay was employed to assess cell viability. Screening revealed activity in a number of compounds targeting the jumonji domain-containing lysine demethylases, including GSK-J4 and KDOBA67, two structurally closely related compounds that mainly target KDM6A (aka UTX) and KMD6B (JMJD3). These compounds were effective in all five chordoma cell lines (UCH1, UCH2, MUG-Chor, UM-Chor, UCH7) tested. In contrast to EGFR inhibitors, these compounds induced downregulation of T at the transcriptional and protein level. Preliminary results suggest this is achieved via the induction of a metabolic stress response as well as through the epigenetic regulation of T, the latter being brought by increased levels of H3K27me3. We also found that Halofuginone, a highly specific inhibitor of the enzyme glutamyl-prolyl tRNA synthetase already tested in phase I autoimmunity clinical trials, induced a metabolic stress response, similar to KDM6 inhibitors, in all chordoma cell lines. Moreover, Halofuginone treatment of a chordoma PDX model demonstrated 44% tumor growth inhibition (p=0.0052). In conclusion, we have identified epigenetic and metabolic pathways that represent potential novel targets for the treatment of chordoma.
Citation Format: Lucia Cottone, Edward Hookway, Graham Wells, Lorena Ligammari, Patrick Lombard, Ralph Mazitschek, Josh Sommer, Udo Oppermann, Adrienne M. Flanagan. A compound screen reveals potential novel therapeutic targets for chordoma: Metabolic stress response and epigenetic control of brachyury [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2018; 2018 Apr 14-18; Chicago, IL. Philadelphia (PA): AACR; Cancer Res 2018;78(13 Suppl):Abstract nr 1949.
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9
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Blanco S, Bandiera R, Popis M, Hussain S, Lombard P, Aleksic J, Sajini A, Tanna H, Cortés-Garrido R, Gkatza N, Dietmann S, Frye M. Stem cell function and stress response are controlled by protein synthesis. Nature 2016; 534:335-40. [PMID: 27306184 PMCID: PMC5040503 DOI: 10.1038/nature18282] [Citation(s) in RCA: 295] [Impact Index Per Article: 36.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2014] [Accepted: 04/21/2016] [Indexed: 12/18/2022]
Abstract
Whether protein synthesis and cellular stress response pathways interact to control stem cell function is currently unknown. Here we show that mouse skin stem cells synthesize less protein than their immediate progenitors in vivo, even when forced to proliferate. Our analyses reveal that activation of stress response pathways drives both a global reduction of protein synthesis and altered translational programmes that together promote stem cell functions and tumorigenesis. Mechanistically, we show that inhibition of post-transcriptional cytosine-5 methylation locks tumour-initiating cells in this distinct translational inhibition programme. Paradoxically, this inhibition renders stem cells hypersensitive to cytotoxic stress, as tumour regeneration after treatment with 5-fluorouracil is blocked. Thus, stem cells must revoke translation inhibition pathways to regenerate a tissue or tumour.
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Affiliation(s)
- Sandra Blanco
- Wellcome Trust – Medical Research Council Cambridge Stem Cell
Institute, University of Cambridge, Tennis Court Road, Cambridge CB2 1QR, United
Kingdom
| | - Roberto Bandiera
- Wellcome Trust – Medical Research Council Cambridge Stem Cell
Institute, University of Cambridge, Tennis Court Road, Cambridge CB2 1QR, United
Kingdom
| | - Martyna Popis
- Wellcome Trust – Medical Research Council Cambridge Stem Cell
Institute, University of Cambridge, Tennis Court Road, Cambridge CB2 1QR, United
Kingdom
| | - Shobbir Hussain
- Department of Biology & Biochemistry, University of Bath,
Claverton Down, Bath BA2 7AY, United Kingdom
| | - Patrick Lombard
- Wellcome Trust – Medical Research Council Cambridge Stem Cell
Institute, University of Cambridge, Tennis Court Road, Cambridge CB2 1QR, United
Kingdom
| | - Jelena Aleksic
- Wellcome Trust – Medical Research Council Cambridge Stem Cell
Institute, University of Cambridge, Tennis Court Road, Cambridge CB2 1QR, United
Kingdom
| | - Abdulrahim Sajini
- Wellcome Trust – Medical Research Council Cambridge Stem Cell
Institute, University of Cambridge, Tennis Court Road, Cambridge CB2 1QR, United
Kingdom
| | - Hinal Tanna
- University of Cambridge, CR-UK, Cambridge Institute, Li Ka Shing
Centre, Robinson Way, Cambridge CB2 0RE, UK
| | - Rosana Cortés-Garrido
- Wellcome Trust – Medical Research Council Cambridge Stem Cell
Institute, University of Cambridge, Tennis Court Road, Cambridge CB2 1QR, United
Kingdom
| | - Nikoletta Gkatza
- Wellcome Trust – Medical Research Council Cambridge Stem Cell
Institute, University of Cambridge, Tennis Court Road, Cambridge CB2 1QR, United
Kingdom
| | - Sabine Dietmann
- Wellcome Trust – Medical Research Council Cambridge Stem Cell
Institute, University of Cambridge, Tennis Court Road, Cambridge CB2 1QR, United
Kingdom
| | - Michaela Frye
- Wellcome Trust – Medical Research Council Cambridge Stem Cell
Institute, University of Cambridge, Tennis Court Road, Cambridge CB2 1QR, United
Kingdom
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Boroviak T, Loos R, Lombard P, Okahara J, Behr R, Sasaki E, Nichols J, Smith A, Bertone P. Lineage-Specific Profiling Delineates the Emergence and Progression of Naive Pluripotency in Mammalian Embryogenesis. Dev Cell 2015; 35:366-82. [PMID: 26555056 PMCID: PMC4643313 DOI: 10.1016/j.devcel.2015.10.011] [Citation(s) in RCA: 292] [Impact Index Per Article: 32.4] [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: 10/03/2014] [Revised: 09/01/2015] [Accepted: 10/14/2015] [Indexed: 12/11/2022]
Abstract
Naive pluripotency is manifest in the preimplantation mammalian embryo. Here we determine transcriptome dynamics of mouse development from the eight-cell stage to postimplantation using lineage-specific RNA sequencing. This method combines high sensitivity and reporter-based fate assignment to acquire the full spectrum of gene expression from discrete embryonic cell types. We define expression modules indicative of developmental state and temporal regulatory patterns marking the establishment and dissolution of naive pluripotency in vivo. Analysis of embryonic stem cells and diapaused embryos reveals near-complete conservation of the core transcriptional circuitry operative in the preimplantation epiblast. Comparison to inner cell masses of marmoset primate blastocysts identifies a similar complement of pluripotency factors but use of alternative signaling pathways. Embryo culture experiments further indicate that marmoset embryos utilize WNT signaling during early lineage segregation, unlike rodents. These findings support a conserved transcription factor foundation for naive pluripotency while revealing species-specific regulatory features of lineage segregation.
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Affiliation(s)
- Thorsten Boroviak
- Wellcome Trust-Medical Research Council Stem Cell Institute, University of Cambridge, Tennis Court Road, Cambridge CB2 1QR, UK
| | - Remco Loos
- European Bioinformatics Institute, European Molecular Biology Laboratory, Wellcome Trust Genome Campus, Cambridge CB10 1SD, UK
| | - Patrick Lombard
- Wellcome Trust-Medical Research Council Stem Cell Institute, University of Cambridge, Tennis Court Road, Cambridge CB2 1QR, UK
| | - Junko Okahara
- Department of Applied Developmental Biology, Central Institute for Experimental Animals, 3-25-12 Tonomachi, Kawasaki-ku, Kanagawa 210-0821, Japan
| | - Rüdiger Behr
- Deutsches Primatenzentrum (German Primate Center), Leibniz-Institut für Primatenforschung, Kellnerweg 4, 37077 Göttingen, Germany; DZHK (German Center for Cardiovascular Research), Wilhelmsplatz 1, 37073 Göttingen, Germany
| | - Erika Sasaki
- Department of Applied Developmental Biology, Central Institute for Experimental Animals, 3-25-12 Tonomachi, Kawasaki-ku, Kanagawa 210-0821, Japan; Keio Advanced Research Center, Keio University, Shinjuku-ku, Tokyo 160-8582, Japan
| | - Jennifer Nichols
- Wellcome Trust-Medical Research Council Stem Cell Institute, University of Cambridge, Tennis Court Road, Cambridge CB2 1QR, UK; Department of Physiology, Development and Neuroscience, University of Cambridge, Tennis Court Road, Cambridge CB2 3EG, UK
| | - Austin Smith
- Wellcome Trust-Medical Research Council Stem Cell Institute, University of Cambridge, Tennis Court Road, Cambridge CB2 1QR, UK; Department of Biochemistry, University of Cambridge, Tennis Court Road, Cambridge CB2 1GA, UK.
| | - Paul Bertone
- Wellcome Trust-Medical Research Council Stem Cell Institute, University of Cambridge, Tennis Court Road, Cambridge CB2 1QR, UK; European Bioinformatics Institute, European Molecular Biology Laboratory, Wellcome Trust Genome Campus, Cambridge CB10 1SD, UK; Genome Biology and Developmental Biology Units, European Molecular Biology Laboratory, Meyerhofstraße 1, 69117 Heidelberg, Germany.
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11
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Abstract
SUMMARY Unraveling transcriptional circuits controlling embryonic stem cell maintenance and fate has great potential for improving our understanding of normal development as well as disease. To facilitate this, we have developed a novel web tool called 'TRES' that predicts the likely upstream regulators for a given gene list. This is achieved by integrating transcription factor (TF) binding events from 187 ChIP-sequencing and ChIP-on-chip datasets in murine and human embryonic stem (ES) cells with over 1000 mammalian TF sequence motifs. Using 114 TF perturbation gene sets, as well as 115 co-expression clusters in ES cells, we validate the utility of this approach. AVAILABILITY AND IMPLEMENTATION TRES is freely available at http://www.tres.roslin.ed.ac.uk. CONTACT Anagha.Joshi@roslin.ed.ac.uk or bg200@cam.ac.uk SUPPLEMENTARY INFORMATION Supplementary data are available at Bioinformatics online.
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Affiliation(s)
- Christopher Pooley
- The Roslin Institute and Royal (Dick) School of Veterinary Studies, Division of Developmental Biology, University of Edinburgh, Easter Bush Campus, Midlothian, EH25 8GR, UK and Department of Haematology, Wellcome Trust and MRC Cambridge Stem Cell Institute, Cambridge Institute for Medical Research, Cambridge University, Cambridge, UK
| | - David Ruau
- The Roslin Institute and Royal (Dick) School of Veterinary Studies, Division of Developmental Biology, University of Edinburgh, Easter Bush Campus, Midlothian, EH25 8GR, UK and Department of Haematology, Wellcome Trust and MRC Cambridge Stem Cell Institute, Cambridge Institute for Medical Research, Cambridge University, Cambridge, UK
| | - Patrick Lombard
- The Roslin Institute and Royal (Dick) School of Veterinary Studies, Division of Developmental Biology, University of Edinburgh, Easter Bush Campus, Midlothian, EH25 8GR, UK and Department of Haematology, Wellcome Trust and MRC Cambridge Stem Cell Institute, Cambridge Institute for Medical Research, Cambridge University, Cambridge, UK
| | - Berthold Gottgens
- The Roslin Institute and Royal (Dick) School of Veterinary Studies, Division of Developmental Biology, University of Edinburgh, Easter Bush Campus, Midlothian, EH25 8GR, UK and Department of Haematology, Wellcome Trust and MRC Cambridge Stem Cell Institute, Cambridge Institute for Medical Research, Cambridge University, Cambridge, UK
| | - Anagha Joshi
- The Roslin Institute and Royal (Dick) School of Veterinary Studies, Division of Developmental Biology, University of Edinburgh, Easter Bush Campus, Midlothian, EH25 8GR, UK and Department of Haematology, Wellcome Trust and MRC Cambridge Stem Cell Institute, Cambridge Institute for Medical Research, Cambridge University, Cambridge, UK
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12
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Sánchez-Castillo M, Ruau D, Wilkinson AC, Ng FSL, Hannah R, Diamanti E, Lombard P, Wilson NK, Gottgens B. CODEX: a next-generation sequencing experiment database for the haematopoietic and embryonic stem cell communities. Nucleic Acids Res 2014; 43:D1117-23. [PMID: 25270877 PMCID: PMC4384009 DOI: 10.1093/nar/gku895] [Citation(s) in RCA: 90] [Impact Index Per Article: 9.0] [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] [Indexed: 01/17/2023] Open
Abstract
CODEX (http://codex.stemcells.cam.ac.uk/) is a user-friendly database for the direct access and interrogation of publicly available next-generation sequencing (NGS) data, specifically aimed at experimental biologists. In an era of multi-centre genomic dataset generation, CODEX provides a single database where these samples are collected, uniformly processed and vetted. The main drive of CODEX is to provide the wider scientific community with instant access to high-quality NGS data, which, irrespective of the publishing laboratory, is directly comparable. CODEX allows users to immediately visualize or download processed datasets, or compare user-generated data against the database's cumulative knowledge-base. CODEX contains four types of NGS experiments: transcription factor chromatin immunoprecipitation coupled to high-throughput sequencing (ChIP-Seq), histone modification ChIP-Seq, DNase-Seq and RNA-Seq. These are largely encompassed within two specialized repositories, HAEMCODE and ESCODE, which are focused on haematopoiesis and embryonic stem cell samples, respectively. To date, CODEX contains over 1000 samples, including 221 unique TFs and 93 unique cell types. CODEX therefore provides one of the most complete resources of publicly available NGS data for the direct interrogation of transcriptional programmes that regulate cellular identity and fate in the context of mammalian development, homeostasis and disease.
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Affiliation(s)
- Manuel Sánchez-Castillo
- Department of Haematology, Wellcome Trust-MRC Cambridge Stem Cell Institute & Cambridge Institute for Medical Research, Cambridge University, Cambridge CB2 0XY, UK
| | - David Ruau
- Department of Haematology, Wellcome Trust-MRC Cambridge Stem Cell Institute & Cambridge Institute for Medical Research, Cambridge University, Cambridge CB2 0XY, UK
| | - Adam C Wilkinson
- Department of Haematology, Wellcome Trust-MRC Cambridge Stem Cell Institute & Cambridge Institute for Medical Research, Cambridge University, Cambridge CB2 0XY, UK
| | - Felicia S L Ng
- Department of Haematology, Wellcome Trust-MRC Cambridge Stem Cell Institute & Cambridge Institute for Medical Research, Cambridge University, Cambridge CB2 0XY, UK
| | - Rebecca Hannah
- Department of Haematology, Wellcome Trust-MRC Cambridge Stem Cell Institute & Cambridge Institute for Medical Research, Cambridge University, Cambridge CB2 0XY, UK
| | - Evangelia Diamanti
- Department of Haematology, Wellcome Trust-MRC Cambridge Stem Cell Institute & Cambridge Institute for Medical Research, Cambridge University, Cambridge CB2 0XY, UK
| | - Patrick Lombard
- Wellcome Trust-MRC Cambridge Stem Cell Institute, University of Cambridge, Cambridge, CB2 1QR, UK
| | - Nicola K Wilson
- Department of Haematology, Wellcome Trust-MRC Cambridge Stem Cell Institute & Cambridge Institute for Medical Research, Cambridge University, Cambridge CB2 0XY, UK
| | - Berthold Gottgens
- Department of Haematology, Wellcome Trust-MRC Cambridge Stem Cell Institute & Cambridge Institute for Medical Research, Cambridge University, Cambridge CB2 0XY, UK
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13
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Blanco S, Dietmann S, Flores JV, Hussain S, Kutter C, Humphreys P, Lukk M, Lombard P, Treps L, Popis M, Kellner S, Hölter SM, Garrett L, Wurst W, Becker L, Klopstock T, Fuchs H, Gailus-Durner V, Hrabĕ de Angelis M, Káradóttir RT, Helm M, Ule J, Gleeson JG, Odom DT, Frye M. Aberrant methylation of tRNAs links cellular stress to neuro-developmental disorders. EMBO J 2014; 33:2020-39. [PMID: 25063673 PMCID: PMC4195770 DOI: 10.15252/embj.201489282] [Citation(s) in RCA: 391] [Impact Index Per Article: 39.1] [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: 06/16/2014] [Accepted: 06/23/2014] [Indexed: 12/16/2022] Open
Abstract
Mutations in the cytosine-5 RNA methyltransferase NSun2 cause microcephaly and other neurological abnormalities in mice and human. How post-transcriptional methylation contributes to the human disease is currently unknown. By comparing gene expression data with global cytosine-5 RNA methylomes in patient fibroblasts and NSun2-deficient mice, we find that loss of cytosine-5 RNA methylation increases the angiogenin-mediated endonucleolytic cleavage of transfer RNAs (tRNA) leading to an accumulation of 5' tRNA-derived small RNA fragments. Accumulation of 5' tRNA fragments in the absence of NSun2 reduces protein translation rates and activates stress pathways leading to reduced cell size and increased apoptosis of cortical, hippocampal and striatal neurons. Mechanistically, we demonstrate that angiogenin binds with higher affinity to tRNAs lacking site-specific NSun2-mediated methylation and that the presence of 5' tRNA fragments is sufficient and required to trigger cellular stress responses. Furthermore, the enhanced sensitivity of NSun2-deficient brains to oxidative stress can be rescued through inhibition of angiogenin during embryogenesis. In conclusion, failure in NSun2-mediated tRNA methylation contributes to human diseases via stress-induced RNA cleavage.
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Affiliation(s)
- Sandra Blanco
- Wellcome Trust - Medical Research Council Cambridge Stem Cell Institute, University of Cambridge, Cambridge, UK
| | - Sabine Dietmann
- Wellcome Trust - Medical Research Council Cambridge Stem Cell Institute, University of Cambridge, Cambridge, UK
| | - Joana V Flores
- Wellcome Trust - Medical Research Council Cambridge Stem Cell Institute, University of Cambridge, Cambridge, UK
| | - Shobbir Hussain
- Wellcome Trust - Medical Research Council Cambridge Stem Cell Institute, University of Cambridge, Cambridge, UK
| | - Claudia Kutter
- Li Ka Shing Centre, CR-UK Cambridge Institute, University of Cambridge, Cambridge, UK
| | - Peter Humphreys
- Wellcome Trust - Medical Research Council Cambridge Stem Cell Institute, University of Cambridge, Cambridge, UK
| | - Margus Lukk
- Li Ka Shing Centre, CR-UK Cambridge Institute, University of Cambridge, Cambridge, UK
| | - Patrick Lombard
- Wellcome Trust - Medical Research Council Cambridge Stem Cell Institute, University of Cambridge, Cambridge, UK
| | | | - Martyna Popis
- Wellcome Trust - Medical Research Council Cambridge Stem Cell Institute, University of Cambridge, Cambridge, UK
| | - Stefanie Kellner
- Johannes Gutenberg University Mainz, Institute for Pharmacy and Biochemistry, Mainz, Germany
| | - Sabine M Hölter
- German Mouse Clinic, Helmholtz Zentrum München, Neuherberg, Germany Institute of Developmental Genetics, Helmholtz Zentrum München, Neuherberg, Germany
| | - Lillian Garrett
- German Mouse Clinic, Helmholtz Zentrum München, Neuherberg, Germany Institute of Developmental Genetics, Helmholtz Zentrum München, Neuherberg, Germany
| | - Wolfgang Wurst
- German Mouse Clinic, Helmholtz Zentrum München, Neuherberg, Germany Institute of Developmental Genetics, Helmholtz Zentrum München, Neuherberg, Germany German Center for Vertigo and Balance Disorders, Munich, Germany
| | - Lore Becker
- German Mouse Clinic, Helmholtz Zentrum München, Neuherberg, Germany Institute for Experimental Genetics, Helmholtz Zentrum München, Neuherberg, Germany
| | - Thomas Klopstock
- German Center for Vertigo and Balance Disorders, Munich, Germany Department of Neurology, Friedrich-Baur-Institute, Ludwig-Maximilians-University, Munich, Germany
| | - Helmut Fuchs
- German Mouse Clinic, Helmholtz Zentrum München, Neuherberg, Germany Institute for Experimental Genetics, Helmholtz Zentrum München, Neuherberg, Germany
| | - Valerie Gailus-Durner
- German Mouse Clinic, Helmholtz Zentrum München, Neuherberg, Germany Institute for Experimental Genetics, Helmholtz Zentrum München, Neuherberg, Germany
| | - Martin Hrabĕ de Angelis
- German Mouse Clinic, Helmholtz Zentrum München, Neuherberg, Germany Institute for Experimental Genetics, Helmholtz Zentrum München, Neuherberg, Germany
| | - Ragnhildur T Káradóttir
- Wellcome Trust - Medical Research Council Cambridge Stem Cell Institute, University of Cambridge, Cambridge, UK
| | - Mark Helm
- Johannes Gutenberg University Mainz, Institute for Pharmacy and Biochemistry, Mainz, Germany
| | - Jernej Ule
- Department of Molecular Neuroscience, UCL Institute of Neurology, London, UK
| | - Joseph G Gleeson
- Laboratory of Pediatric Brain Diseases, Howard Hughes Medical Institute, The Rockefeller University, New York, NY, USA
| | - Duncan T Odom
- Li Ka Shing Centre, CR-UK Cambridge Institute, University of Cambridge, Cambridge, UK
| | - Michaela Frye
- Wellcome Trust - Medical Research Council Cambridge Stem Cell Institute, University of Cambridge, Cambridge, UK
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14
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Affiliation(s)
- David Ruau
- 1] Department of Hematology, Cambridge Institute for Medical Research, University of Cambridge, Cambridge, UK. [2] Wellcome Trust-Medical Research Council (MRC) Cambridge Stem Cell Institute, University of Cambridge, Cambridge, UK
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15
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Page ME, Lombard P, Ng F, Göttgens B, Jensen KB. The epidermis comprises autonomous compartments maintained by distinct stem cell populations. Cell Stem Cell 2013; 13:471-82. [PMID: 23954751 PMCID: PMC3793873 DOI: 10.1016/j.stem.2013.07.010] [Citation(s) in RCA: 233] [Impact Index Per Article: 21.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2013] [Revised: 06/18/2013] [Accepted: 07/16/2013] [Indexed: 12/14/2022]
Abstract
The complex anatomy of the epidermis contains multiple adult stem cell populations, but the extent to which they functionally overlap during homeostasis, wound healing, and tumor initiation remains poorly defined. Here, we demonstrate that Lrig1(+ve) cells are highly proliferative epidermal stem cells. Long-term clonal analysis reveals that Lrig1(+ve) cells maintain the upper pilosebaceous unit, containing the infundibulum and sebaceous gland as independent compartments, but contribute to neither the hair follicle nor the interfollicular epidermis, which are maintained by distinct stem cell populations. In contrast, upon wounding, stem cell progeny from multiple compartments acquire lineage plasticity and make permanent contributions to regenerating tissue. We further show that oncogene activation in Lrig1(+ve) cells drives hyperplasia but requires auxiliary stimuli for tumor formation. In summary, our data demonstrate that epidermal stem cells are lineage restricted during homeostasis and suggest that compartmentalization may constitute a conserved mechanism underlying epithelial tissue maintenance.
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Affiliation(s)
- Mahalia E Page
- Wellcome Trust - Medical Research Council Cambridge Stem Cell Institute, Tennis Court Road, CB2 1QR Cambridge, UK; Department of Oncology, University of Cambridge, CB2 0QQ Cambridge, UK
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16
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Hussain S, Sajini A, Blanco S, Dietmann S, Lombard P, Sugimoto Y, Paramor M, Gleeson J, Odom D, Ule J, Frye M. NSun2-mediated cytosine-5 methylation of vault noncoding RNA determines its processing into regulatory small RNAs. Cell Rep 2013; 4:255-61. [PMID: 23871666 PMCID: PMC3730056 DOI: 10.1016/j.celrep.2013.06.029] [Citation(s) in RCA: 384] [Impact Index Per Article: 34.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2013] [Revised: 05/20/2013] [Accepted: 06/21/2013] [Indexed: 02/03/2023] Open
Abstract
Autosomal-recessive loss of the NSUN2 gene has been identified as a causative link to intellectual disability disorders in humans. NSun2 is an RNA methyltransferase modifying cytosine-5 in transfer RNAs (tRNAs), yet the identification of cytosine methylation in other RNA species has been hampered by the lack of sensitive and reliable molecular techniques. Here, we describe miCLIP as an additional approach for identifying RNA methylation sites in transcriptomes. miCLIP is a customized version of the individual-nucleotide-resolution crosslinking and immunoprecipitation (iCLIP) method. We confirm site-specific methylation in tRNAs and additional messenger and noncoding RNAs (ncRNAs). Among these, vault ncRNAs contained six NSun2-methylated cytosines, three of which were confirmed by RNA bisulfite sequencing. Using patient cells lacking the NSun2 protein, we further show that loss of cytosine-5 methylation in vault RNAs causes aberrant processing into Argonaute-associated small RNA fragments that can function as microRNAs. Thus, impaired processing of vault ncRNA may contribute to the etiology of NSun2-deficiency human disorders.
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Affiliation(s)
- Shobbir Hussain
- Wellcome Trust – Medical Research Council Cambridge Stem Cell Institute, University of Cambridge, Tennis Court Road, Cambridge, CB2 1QR, UK
| | - Abdulrahim A. Sajini
- Wellcome Trust – Medical Research Council Cambridge Stem Cell Institute, University of Cambridge, Tennis Court Road, Cambridge, CB2 1QR, UK
| | - Sandra Blanco
- Wellcome Trust – Medical Research Council Cambridge Stem Cell Institute, University of Cambridge, Tennis Court Road, Cambridge, CB2 1QR, UK
| | - Sabine Dietmann
- Wellcome Trust – Medical Research Council Cambridge Stem Cell Institute, University of Cambridge, Tennis Court Road, Cambridge, CB2 1QR, UK
| | - Patrick Lombard
- Wellcome Trust – Medical Research Council Cambridge Stem Cell Institute, University of Cambridge, Tennis Court Road, Cambridge, CB2 1QR, UK
| | - Yoichiro Sugimoto
- Medical Research Council Laboratory of Molecular Biology, Hills Road, Cambridge CB2 0QH, UK
| | - Maike Paramor
- Wellcome Trust – Medical Research Council Cambridge Stem Cell Institute, University of Cambridge, Tennis Court Road, Cambridge, CB2 1QR, UK
| | - Joseph G. Gleeson
- Howard Hughes Medical Institute, University of California, San Diego School of Medicine, La Jolla, CA 92093, USA
| | - Duncan T. Odom
- University of Cambridge, CR-UK, Cambridge Institute, Li Ka Shing Centre, Robinson Way, Cambridge CB2 0RE, UK
| | - Jernej Ule
- Medical Research Council Laboratory of Molecular Biology, Hills Road, Cambridge CB2 0QH, UK
- Department of Molecular Neuroscience, UCL Institute of Neurology, Queen Square, London WC1N 3BG, UK
| | - Michaela Frye
- Wellcome Trust – Medical Research Council Cambridge Stem Cell Institute, University of Cambridge, Tennis Court Road, Cambridge, CB2 1QR, UK
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