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Phoon YP, Chivukula IV, Tsoi YL, Kanatani S, Uhlén P, Kuiper R, Lendahl U. Notch activation in the mouse mammary luminal lineage leads to ductal hyperplasia and altered partitioning of luminal cell subtypes. Exp Cell Res 2020; 395:112156. [PMID: 32707133 DOI: 10.1016/j.yexcr.2020.112156] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Revised: 06/17/2020] [Accepted: 06/23/2020] [Indexed: 11/20/2022]
Abstract
Hyperactivated Notch signalling has been implicated in breast cancer, but how elevated levels of Notch signalling contribute to mammary dysplasia and tumorigenesis is not fully understood. In this study, we express an activated form of Notch1 in the mouse mammary luminal lineage and analyse the consequences for tumour formation and the transcriptomic landscape in the luminal lineage. Simultaneous conditional activation of a Notch1 intracellular domain (Notch1 ICD) and EGFP in the luminal lineage was achieved by removal of a stop cassette by CRE-recombinase expression from the whey acidic protein (WAP) promoter. Mice in which Notch1 ICD was activated in the luminal lineage (WAP-CRE;R26-N1ICD mice) exhibit ductal hyperplasia after lactation with an increase in branching frequency and in the number of side-branch ends in the ductal tree. A subset of the mice developed mammary tumours and the majority of the tumour cells expressed EGFP (as a proxy for Notch1 ICD), indicating that the tumours originate from the Notch1 ICD-expressing cells. Single-cell transcriptome analysis of the EGFP-positive mammary cells identified six subtypes of luminal cells. The same six subtypes were found in control mice (WAP-CRE;R26-tdTomato mice expressing the tdTomato reporter from WAP-CRE-mediated activation), but the proportion of cells in the various subtypes differed between the WAP-CRE;R26-N1ICD and control WAP-CRE;R26-tdTomato mice. In conclusion, we show that Notch1 ICD expression in the luminal lineage produces a ductal hyperplasia and branching phenotype accompanied by altered luminal cell subtype partitioning.
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Affiliation(s)
- Yee Peng Phoon
- Department of Cell and Molecular Biology, Karolinska Institutet, SE-171 77, Stockholm, Sweden
| | - Indira V Chivukula
- Department of Cell and Molecular Biology, Karolinska Institutet, SE-171 77, Stockholm, Sweden
| | - Yat Long Tsoi
- Department of Cell and Molecular Biology, Karolinska Institutet, SE-171 77, Stockholm, Sweden
| | - Shigeaki Kanatani
- Department of Medical Biochemistry and Biophysics, Karolinska Institutet, SE-171 77, Stockholm, Sweden
| | - Per Uhlén
- Department of Medical Biochemistry and Biophysics, Karolinska Institutet, SE-171 77, Stockholm, Sweden
| | - Raoul Kuiper
- Department of Laboratory Medicine, Karolinska Institutet, SE-141 52, Huddinge, Sweden
| | - Urban Lendahl
- Department of Cell and Molecular Biology, Karolinska Institutet, SE-171 77, Stockholm, Sweden.
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Duarte S, Woll PS, Buza-Vidas N, Chin DWL, Boukarabila H, Luís TC, Stenson L, Bouriez-Jones T, Ferry H, Mead AJ, Atkinson D, Jin S, Clark SA, Wu B, Repapi E, Gray N, Taylor S, Mutvei AP, Tsoi YL, Nerlov C, Lendahl U, Jacobsen SEW. Canonical Notch signaling is dispensable for adult steady-state and stress myelo-erythropoiesis. Blood 2018; 131:1712-1719. [PMID: 29339402 PMCID: PMC5909886 DOI: 10.1182/blood-2017-06-788505] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [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: 06/02/2017] [Accepted: 01/10/2018] [Indexed: 12/21/2022] Open
Abstract
Although an essential role for canonical Notch signaling in generation of hematopoietic stem cells in the embryo and in thymic T-cell development is well established, its role in adult bone marrow (BM) myelopoiesis remains unclear. Some studies, analyzing myeloid progenitors in adult mice with inhibited Notch signaling, implicated distinct roles of canonical Notch signaling in regulation of progenitors for the megakaryocyte, erythroid, and granulocyte-macrophage cell lineages. However, these studies might also have targeted other pathways. Therefore, we specifically deleted, in adult BM, the transcription factor recombination signal-binding protein J κ (Rbpj), through which canonical signaling from all Notch receptors converges. Notably, detailed progenitor staging established that canonical Notch signaling is fully dispensable for all investigated stages of megakaryocyte, erythroid, and myeloid progenitors in steady state unperturbed hematopoiesis, after competitive BM transplantation, and in stress-induced erythropoiesis. Moreover, expression of key regulators of these hematopoietic lineages and Notch target genes were unaffected by Rbpj deficiency in BM progenitor cells.
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Affiliation(s)
- Sara Duarte
- Haematopoietic Stem Cell Biology Laboratory, MRC Weatherall Institute of Molecular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, United Kingdom
- Clinical Hematology Department, University Hospital Center of Coimbra, Praceta Professor Mota Pinto, Coimbra, Portugal
| | - Petter S Woll
- Haematopoietic Stem Cell Biology Laboratory, MRC Weatherall Institute of Molecular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, United Kingdom
- Center for Hematology and Regenerative Medicine, Department of Medicine Huddinge, Karolinska Institutet, Karolinska University Hospital Huddinge, Stockholm, Sweden
| | - Natalija Buza-Vidas
- Haematopoietic Stem Cell Biology Laboratory, MRC Weatherall Institute of Molecular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, United Kingdom
| | - Desmond Wai Loon Chin
- Center for Hematology and Regenerative Medicine, Department of Medicine Huddinge, Karolinska Institutet, Karolinska University Hospital Huddinge, Stockholm, Sweden
| | - Hanane Boukarabila
- Haematopoietic Stem Cell Biology Laboratory, MRC Weatherall Institute of Molecular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, United Kingdom
- MRC Molecular Haematology Unit, MRC Weatherall Institute of Molecular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, United Kingdom
| | - Tiago C Luís
- Haematopoietic Stem Cell Biology Laboratory, MRC Weatherall Institute of Molecular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, United Kingdom
| | - Laura Stenson
- Haematopoietic Stem Cell Biology Laboratory, MRC Weatherall Institute of Molecular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, United Kingdom
- MRC Molecular Haematology Unit, MRC Weatherall Institute of Molecular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, United Kingdom
| | - Tiphaine Bouriez-Jones
- Haematopoietic Stem Cell Biology Laboratory, MRC Weatherall Institute of Molecular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, United Kingdom
| | - Helen Ferry
- Haematopoietic Stem Cell Biology Laboratory, MRC Weatherall Institute of Molecular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, United Kingdom
| | - Adam J Mead
- Haematopoietic Stem Cell Biology Laboratory, MRC Weatherall Institute of Molecular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, United Kingdom
- MRC Molecular Haematology Unit, MRC Weatherall Institute of Molecular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, United Kingdom
| | - Deborah Atkinson
- Haematopoietic Stem Cell Biology Laboratory, MRC Weatherall Institute of Molecular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, United Kingdom
| | - Shaobo Jin
- Department of Cell and Molecular Biology, Karolinska Institutet, Stockholm, Sweden; and
| | - Sally-Ann Clark
- Haematopoietic Stem Cell Biology Laboratory, MRC Weatherall Institute of Molecular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, United Kingdom
| | - Bishan Wu
- Haematopoietic Stem Cell Biology Laboratory, MRC Weatherall Institute of Molecular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, United Kingdom
| | - Emmanouela Repapi
- Computational Biology Research Group, MRC Weatherall Institute of Molecular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, United Kingdom
| | - Nicki Gray
- Computational Biology Research Group, MRC Weatherall Institute of Molecular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, United Kingdom
| | - Stephen Taylor
- Computational Biology Research Group, MRC Weatherall Institute of Molecular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, United Kingdom
| | - Anders P Mutvei
- Department of Cell and Molecular Biology, Karolinska Institutet, Stockholm, Sweden; and
| | - Yat Long Tsoi
- Department of Cell and Molecular Biology, Karolinska Institutet, Stockholm, Sweden; and
| | - Claus Nerlov
- MRC Molecular Haematology Unit, MRC Weatherall Institute of Molecular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, United Kingdom
| | - Urban Lendahl
- Department of Cell and Molecular Biology, Karolinska Institutet, Stockholm, Sweden; and
| | - Sten Eirik W Jacobsen
- Haematopoietic Stem Cell Biology Laboratory, MRC Weatherall Institute of Molecular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, United Kingdom
- Center for Hematology and Regenerative Medicine, Department of Medicine Huddinge, Karolinska Institutet, Karolinska University Hospital Huddinge, Stockholm, Sweden
- MRC Molecular Haematology Unit, MRC Weatherall Institute of Molecular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, United Kingdom
- Department of Cell and Molecular Biology, Karolinska Institutet, Stockholm, Sweden; and
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Andersson ER, Chivukula IV, Hankeova S, Sjöqvist M, Tsoi YL, Ramsköld D, Masek J, Elmansuri A, Hoogendoorn A, Vazquez E, Storvall H, Netušilová J, Huch M, Fischler B, Ellis E, Contreras A, Nemeth A, Chien KC, Clevers H, Sandberg R, Bryja V, Lendahl U. Mouse Model of Alagille Syndrome and Mechanisms of Jagged1 Missense Mutations. Gastroenterology 2018; 154:1080-1095. [PMID: 29162437 PMCID: PMC7007299 DOI: 10.1053/j.gastro.2017.11.002] [Citation(s) in RCA: 77] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/27/2017] [Revised: 10/21/2017] [Accepted: 11/02/2017] [Indexed: 12/28/2022]
Abstract
BACKGROUND & AIMS Alagille syndrome is a genetic disorder characterized by cholestasis, ocular abnormalities, characteristic facial features, heart defects, and vertebral malformations. Most cases are associated with mutations in JAGGED1 (JAG1), which encodes a Notch ligand, although it is not clear how these contribute to disease development. We aimed to develop a mouse model of Alagille syndrome to elucidate these mechanisms. METHODS Mice with a missense mutation (H268Q) in Jag1 (Jag1+/Ndr mice) were outbred to a C3H/C57bl6 background to generate a mouse model for Alagille syndrome (Jag1Ndr/Ndr mice). Liver tissues were collected at different timepoints during development, analyzed by histology, and liver organoids were cultured and analyzed. We performed transcriptome analysis of Jag1Ndr/Ndr livers and livers from patients with Alagille syndrome, cross-referenced to the Human Protein Atlas, to identify commonly dysregulated pathways and biliary markers. We used species-specific transcriptome separation and ligand-receptor interaction assays to measure Notch signaling and the ability of JAG1Ndr to bind or activate Notch receptors. We studied signaling of JAG1 and JAG1Ndr via NOTCH 1, NOTCH2, and NOTCH3 and resulting gene expression patterns in parental and NOTCH1-expressing C2C12 cell lines. RESULTS Jag1Ndr/Ndr mice had many features of Alagille syndrome, including eye, heart, and liver defects. Bile duct differentiation, morphogenesis, and function were dysregulated in newborn Jag1Ndr/Ndr mice, with aberrations in cholangiocyte polarity, but these defects improved in adult mice. Jag1Ndr/Ndr liver organoids collapsed in culture, indicating structural instability. Whole-transcriptome sequence analyses of liver tissues from mice and patients with Alagille syndrome identified dysregulated genes encoding proteins enriched at the apical side of cholangiocytes, including CFTR and SLC5A1, as well as reduced expression of IGF1. Exposure of Notch-expressing cells to JAG1Ndr, compared with JAG1, led to hypomorphic Notch signaling, based on transcriptome analysis. JAG1-expressing cells, but not JAG1Ndr-expressing cells, bound soluble Notch1 extracellular domain, quantified by flow cytometry. However, JAG1 and JAG1Ndr cells each bound NOTCH2, and signaling from NOTCH2 signaling was reduced but not completely inhibited, in response to JAG1Ndr compared with JAG1. CONCLUSIONS In mice, expression of a missense mutant of Jag1 (Jag1Ndr) disrupts bile duct development and recapitulates Alagille syndrome phenotypes in heart, eye, and craniofacial dysmorphology. JAG1Ndr does not bind NOTCH1, but binds NOTCH2, and elicits hypomorphic signaling. This mouse model can be used to study other features of Alagille syndrome and organ development.
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Affiliation(s)
- Emma R. Andersson
- Department of Cell and Molecular Biology, Karolinska Institutet, Stockholm, Sweden,Department of Biosciences and Nutrition, Karolinska Institutet, Stockholm, Sweden
| | - Indira V. Chivukula
- Department of Cell and Molecular Biology, Karolinska Institutet, Stockholm, Sweden
| | - Simona Hankeova
- Department of Cell and Molecular Biology, Karolinska Institutet, Stockholm, Sweden,Department of Biosciences and Nutrition, Karolinska Institutet, Stockholm, Sweden,Institute of Experimental Biology, Faculty of Science, Masaryk University, Brno, Czech Republic
| | - Marika Sjöqvist
- Department of Biosciences and Nutrition, Karolinska Institutet, Stockholm, Sweden
| | - Yat Long Tsoi
- Department of Cell and Molecular Biology, Karolinska Institutet, Stockholm, Sweden
| | - Daniel Ramsköld
- Rheumatology Unit, Department of Medicine Solna, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden
| | - Jan Masek
- Department of Biosciences and Nutrition, Karolinska Institutet, Stockholm, Sweden
| | - Aiman Elmansuri
- Department of Biosciences and Nutrition, Karolinska Institutet, Stockholm, Sweden
| | - Anita Hoogendoorn
- Department of Biosciences and Nutrition, Karolinska Institutet, Stockholm, Sweden
| | - Elenae Vazquez
- Unidad de Investigación Biomédica en Cáncer, Instituto Nacional de Cancerología-Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, México City, México
| | - Helena Storvall
- Karolinska University Hospital, CLINTEC, Karolinska Institutet, Stockholm, Sweden
| | - Julie Netušilová
- Institute of Experimental Biology, Faculty of Science, Masaryk University, Brno, Czech Republic
| | - Meritxell Huch
- Hubrecht Institute for Developmental Biology and Stem Cell Research, University Medical Centre Utrecht, Netherlands
| | - Björn Fischler
- Karolinska University Hospital, Department of Pediatrics, CLINTEC, Karolinska Institutet, Stockholm, Sweden
| | - Ewa Ellis
- Karolinska University Hospital, CLINTEC, Karolinska Institutet, Stockholm, Sweden
| | - Adriana Contreras
- Unidad de Investigación Biomédica en Cáncer, Instituto Nacional de Cancerología-Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, México City, México
| | - Antal Nemeth
- Karolinska University Hospital, Department of Pediatrics, CLINTEC, Karolinska Institutet, Stockholm, Sweden
| | - Kenneth C. Chien
- Department of Cell and Molecular Biology, Karolinska Institutet, Stockholm, Sweden
| | - Hans Clevers
- Hubrecht Institute for Developmental Biology and Stem Cell Research, University Medical Centre Utrecht, Netherlands
| | - Rickard Sandberg
- Ludwig Institute for Cancer Research, Karolinska Institutet, Stockholm, Sweden
| | - Vitezslav Bryja
- Institute of Experimental Biology, Faculty of Science, Masaryk University, Brno, Czech Republic
| | - Urban Lendahl
- Department of Cell and Molecular Biology, Karolinska Institutet, Stockholm, Sweden.
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Braune EB, Tsoi YL, Phoon YP, Landor S, Silva Cascales H, Ramsköld D, Deng Q, Lindqvist A, Lian X, Sahlgren C, Jin SB, Lendahl U. Loss of CSL Unlocks a Hypoxic Response and Enhanced Tumor Growth Potential in Breast Cancer Cells. Stem Cell Reports 2016; 6:643-651. [PMID: 27066863 PMCID: PMC4939550 DOI: 10.1016/j.stemcr.2016.03.004] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [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: 07/30/2015] [Revised: 03/08/2016] [Accepted: 03/08/2016] [Indexed: 01/10/2023] Open
Abstract
Notch signaling is an important regulator of stem cell differentiation. All canonical Notch signaling is transmitted through the DNA-binding protein CSL, and hyperactivated Notch signaling is associated with tumor development; thus it may be anticipated that CSL deficiency should reduce tumor growth. In contrast, we report that genetic removal of CSL in breast tumor cells caused accelerated growth of xenografted tumors. Loss of CSL unleashed a hypoxic response during normoxic conditions, manifested by stabilization of the HIF1α protein and acquisition of a polyploid giant-cell, cancer stem cell-like, phenotype. At the transcriptome level, loss of CSL upregulated more than 1,750 genes and less than 3% of those genes were part of the Notch transcriptional signature. Collectively, this suggests that CSL exerts functions beyond serving as the central node in the Notch signaling cascade and reveals a role for CSL in tumorigenesis and regulation of the cellular hypoxic response. Loss of CSL accelerates tumor growth CSL deficiency unleashes a hypoxic response during normoxia Loss of CSL leads to a polyploid giant-cell, cancer stem cell-like morphology CSL-deficient cells show a Notch-independent transcriptional signature
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Affiliation(s)
- Eike-Benjamin Braune
- Department of Cell and Molecular Biology, Karolinska Institutet, 17177 Stockholm, Sweden
| | - Yat Long Tsoi
- Department of Cell and Molecular Biology, Karolinska Institutet, 17177 Stockholm, Sweden
| | - Yee Peng Phoon
- Department of Cell and Molecular Biology, Karolinska Institutet, 17177 Stockholm, Sweden
| | - Sebastian Landor
- Department of Cell and Molecular Biology, Karolinska Institutet, 17177 Stockholm, Sweden; Turku Centre for Biotechnology, Abo Akademi University and University of Turku, 20520 Turku, Finland
| | - Helena Silva Cascales
- Department of Cell and Molecular Biology, Karolinska Institutet, 17177 Stockholm, Sweden
| | - Daniel Ramsköld
- Rheumatology Unit, Department of Medicine Solna, Karolinska Institutet, Karolinska University Hospital, 17176 Stockholm, Sweden
| | - Qiaolin Deng
- Department of Cell and Molecular Biology, Karolinska Institutet, 17177 Stockholm, Sweden
| | - Arne Lindqvist
- Department of Cell and Molecular Biology, Karolinska Institutet, 17177 Stockholm, Sweden
| | - Xiaojun Lian
- Department of Cell and Molecular Biology, Karolinska Institutet, 17177 Stockholm, Sweden
| | - Cecilia Sahlgren
- Turku Centre for Biotechnology, Abo Akademi University and University of Turku, 20520 Turku, Finland
| | - Shao-Bo Jin
- Department of Cell and Molecular Biology, Karolinska Institutet, 17177 Stockholm, Sweden.
| | - Urban Lendahl
- Department of Cell and Molecular Biology, Karolinska Institutet, 17177 Stockholm, Sweden.
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