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Al-Amin RA, Johansson L, Abdurakhmanov E, Landegren N, Löf L, Arngården L, Blokzijl A, Svensson R, Hammond M, Lönn P, Haybaeck J, Kamali-Moghaddam M, Jensen A, Danielson U, Artursson P, Lundbäck T, Landegren U. Monitoring drug-target interactions through target engagement-mediated amplification on arrays and in situ. Nucleic Acids Res 2022; 50:e129. [PMID: 36189884 PMCID: PMC9825164 DOI: 10.1093/nar/gkac842] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Revised: 08/24/2022] [Accepted: 09/20/2022] [Indexed: 01/29/2023] Open
Abstract
Drugs are designed to bind their target proteins in physiologically relevant tissues and organs to modulate biological functions and elicit desirable clinical outcomes. Information about target engagement at cellular and subcellular resolution is therefore critical for guiding compound optimization in drug discovery, and for probing resistance mechanisms to targeted therapies in clinical samples. We describe a target engagement-mediated amplification (TEMA) technology, where oligonucleotide-conjugated drugs are used to visualize and measure target engagement in situ, amplified via rolling-circle replication of circularized oligonucleotide probes. We illustrate the TEMA technique using dasatinib and gefitinib, two kinase inhibitors with distinct selectivity profiles. In vitro binding by the dasatinib probe to arrays of displayed proteins accurately reproduced known selectivity profiles, while their differential binding to fixed adherent cells agreed with expectations from expression profiles of the cells. We also introduce a proximity ligation variant of TEMA to selectively investigate binding to specific target proteins of interest. This form of the assay serves to improve resolution of binding to on- and off-target proteins. In conclusion, TEMA has the potential to aid in drug development and clinical routine by conferring valuable insights in drug-target interactions at spatial resolution in protein arrays, cells and in tissues.
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Affiliation(s)
- Rasel A Al-Amin
- To whom correspondence should be addressed. Tel: +46 70 0535324;
| | - Lars Johansson
- Department of Medical Biochemistry and Biophysics, Chemical Biology Consortium Sweden (CBCS), Science for Life Laboratory, Karolinska Institutet, Solna, Sweden
| | - Eldar Abdurakhmanov
- Department of Chemistry-BMC, Science for Life Laboratory, Uppsala University, Uppsala, Sweden
| | - Nils Landegren
- Center for Molecular Medicine, Department of Medicine (Solna), Science for Life Laboratory, Karolinska Institutet, Solna, Sweden
- Department of Medical Sciences, Uppsala University, Uppsala, Sweden
| | - Liza Löf
- Department of Immunology, Genetics and Pathology, Science for Life Laboratory, Uppsala University, Uppsala, Sweden
| | - Linda Arngården
- Department of Medical Sciences, Uppsala University, Uppsala, Sweden
| | - Andries Blokzijl
- Department of Immunology, Genetics and Pathology, Science for Life Laboratory, Uppsala University, Uppsala, Sweden
| | - Richard Svensson
- Department of Pharmacy, Uppsala University Drug Optimization and Pharmaceutical Profiling (UDOPP), Science for Life Laboratory, Uppsala University, Uppsala, Sweden
| | - Maria Hammond
- Department of Immunology, Genetics and Pathology, Science for Life Laboratory, Uppsala University, Uppsala, Sweden
| | - Peter Lönn
- Department of Immunology, Genetics and Pathology, Science for Life Laboratory, Uppsala University, Uppsala, Sweden
| | - Johannes Haybaeck
- Institute of Pathology, Neuropathology and Molecular Pathology, Medical University of Innsbruck, Innsbruck, Austria
- Diagnostic and Research Institute of Pathology, Medical University of Graz, Graz, Austria
| | - Masood Kamali-Moghaddam
- Department of Immunology, Genetics and Pathology, Science for Life Laboratory, Uppsala University, Uppsala, Sweden
| | - Annika Jenmalm Jensen
- Department of Medical Biochemistry and Biophysics, Chemical Biology Consortium Sweden (CBCS), Science for Life Laboratory, Karolinska Institutet, Solna, Sweden
| | - U Helena Danielson
- Department of Chemistry-BMC, Science for Life Laboratory, Uppsala University, Uppsala, Sweden
| | - Per Artursson
- Department of Pharmacy, Uppsala University Drug Optimization and Pharmaceutical Profiling (UDOPP), Science for Life Laboratory, Uppsala University, Uppsala, Sweden
| | - Thomas Lundbäck
- Department of Medical Biochemistry and Biophysics, Chemical Biology Consortium Sweden (CBCS), Science for Life Laboratory, Karolinska Institutet, Solna, Sweden
| | - Ulf Landegren
- Correspondence may also be addressed to Ulf Landegren. Tel: +46 18 4714910; Fax: +46 18 4714808;
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Klaesson A, Grannas K, Ebai T, Heldin J, Koos B, Leino M, Raykova D, Oelrich J, Arngården L, Söderberg O, Landegren U. Improved efficiency of in situ protein analysis by proximity ligation using UnFold probes. Sci Rep 2018; 8:5400. [PMID: 29599435 PMCID: PMC5876389 DOI: 10.1038/s41598-018-23582-1] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2017] [Accepted: 03/14/2018] [Indexed: 12/26/2022] Open
Abstract
We have redesigned probes for in situ proximity ligation assay (PLA), resulting in more efficient localized detection of target proteins. In situ PLA depends on recognition of target proteins by pairs of antibody-oligonucleotide conjugates (PLA probes), which jointly give rise to DNA circles that template localized rolling circle amplification reactions. The requirement for dual recognition of the target proteins improves selectivity by ignoring any cross-reactivity not shared by the antibodies, and it allows detection of protein-protein interactions and post-translational modifications. We herein describe an improved design of the PLA probes –UnFold probes – where all elements required for formation of circular DNA strands are incorporated in the probes. Premature interactions between the UnFold probes are prevented by including an enzymatic “unfolding” step in the detection reactions. This allows DNA circles to form by pairs of reagents only after excess reagents have been removed. We demonstrate the performance of UnFold probes for detection of protein-protein interactions and post-translational modifications in fixed cells and tissues, revealing considerably more efficient signal generation. We also apply the UnFold probes to detect IL-6 in solution phase after capture on solid supports, demonstrating increased sensitivity over both normal sandwich enzyme-linked immunosorbent assays and conventional PLA assays.
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Affiliation(s)
- Axel Klaesson
- Department of Pharmaceutical Biosciences, Pharmaceutical Cell Biology, Uppsala University, Uppsala, Sweden
| | - Karin Grannas
- Department of Pharmaceutical Biosciences, Pharmaceutical Cell Biology, Uppsala University, Uppsala, Sweden
| | - Tonge Ebai
- Department of Immunology, Genetics and Pathology, Science for Life Laboratory, Uppsala University, Uppsala, Sweden
| | - Johan Heldin
- Department of Pharmaceutical Biosciences, Pharmaceutical Cell Biology, Uppsala University, Uppsala, Sweden
| | - Björn Koos
- Department of Systemic Cell Biology, Max Planck Institute of Molecular Physiology, Dortmund, Germany
| | - Mattias Leino
- Department of Pharmaceutical Biosciences, Pharmaceutical Cell Biology, Uppsala University, Uppsala, Sweden
| | - Doroteya Raykova
- Department of Pharmaceutical Biosciences, Pharmaceutical Cell Biology, Uppsala University, Uppsala, Sweden
| | - Johan Oelrich
- Department of Immunology, Genetics and Pathology, Science for Life Laboratory, Uppsala University, Uppsala, Sweden
| | - Linda Arngården
- Department of Pharmaceutical Biosciences, Pharmaceutical Cell Biology, Uppsala University, Uppsala, Sweden
| | - Ola Söderberg
- Department of Pharmaceutical Biosciences, Pharmaceutical Cell Biology, Uppsala University, Uppsala, Sweden.
| | - Ulf Landegren
- Department of Immunology, Genetics and Pathology, Science for Life Laboratory, Uppsala University, Uppsala, Sweden.
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3
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Löf L, Arngården L, Ebai T, Landegren U, Söderberg O, Kamali-Moghaddam M. Detection of Extracellular Vesicles Using Proximity Ligation Assay with Flow Cytometry Readout-ExoPLA. ACTA ACUST UNITED AC 2017; 81:4.8.1-4.8.10. [PMID: 28678418 DOI: 10.1002/cpcy.22] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Extracellular vesicles (EVs) are continuously released by most cells, and they carry surface markers of their cells of origin. Found in all body fluids, EVs function as conveyers of cellular information, and evidence implicates them as markers of disease. These characteristics make EVs attractive diagnostic targets. However, detection and characterization of EVs is challenging due to their small size. We've established a method, called ExoPLA, that allows individual EVs to be detected and characterized at high specificity and sensitivity. Based on the in situ proximity ligation assay (in situ PLA), proximal oligonucleotide-conjugated antibodies bound to their targets on the surfaces of the EVs allow formation of circular products that can be fluorescently labeled by rolling circle amplification. The intense fluorescent signals produced in this assay allow detection and enumeration of individual EVs by flow cytometry. We describe the procedures for ExoPLA, along with expected results and troubleshooting. © 2017 by John Wiley & Sons, Inc.
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Affiliation(s)
- Liza Löf
- Department of Immunology, Genetics & Pathology, Science for Life Laboratory, Uppsala University, Uppsala, Sweden
| | - Linda Arngården
- Department of Immunology, Genetics & Pathology, Science for Life Laboratory, Uppsala University, Uppsala, Sweden
| | - Tonge Ebai
- Department of Immunology, Genetics & Pathology, Science for Life Laboratory, Uppsala University, Uppsala, Sweden
| | - Ulf Landegren
- Department of Immunology, Genetics & Pathology, Science for Life Laboratory, Uppsala University, Uppsala, Sweden
| | - Ola Söderberg
- Department of Pharmaceutical Biosciences, Uppsala University, Uppsala, Sweden
| | - Masood Kamali-Moghaddam
- Department of Immunology, Genetics & Pathology, Science for Life Laboratory, Uppsala University, Uppsala, Sweden
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4
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Clausson CM, Arngården L, Ishaq O, Klaesson A, Kühnemund M, Grannas K, Koos B, Qian X, Ranefall P, Krzywkowski T, Brismar H, Nilsson M, Wählby C, Söderberg O. Compaction of rolling circle amplification products increases signal integrity and signal-to-noise ratio. Sci Rep 2015. [PMID: 26202090 PMCID: PMC4511876 DOI: 10.1038/srep12317] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [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: 11/12/2022] Open
Abstract
Rolling circle amplification (RCA) for generation of distinct fluorescent signals in situ relies upon the self-collapsing properties of single-stranded DNA in commonly used RCA-based methods. By introducing a cross-hybridizing DNA oligonucleotide during rolling circle amplification, we demonstrate that the fluorophore-labeled RCA products (RCPs) become smaller. The reduced size of RCPs increases the local concentration of fluorophores and as a result, the signal intensity increases together with the signal-to-noise ratio. Furthermore, we have found that RCPs sometimes tend to disintegrate and may be recorded as several RCPs, a trait that is prevented with our cross-hybridizing DNA oligonucleotide. These effects generated by compaction of RCPs improve accuracy of visual as well as automated in situ analysis for RCA based methods, such as proximity ligation assays (PLA) and padlock probes.
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Affiliation(s)
- Carl-Magnus Clausson
- Department of Immunology, Genetics and Pathology, Uppsala University, Science for Life Laboratory, Biomedical center, SE-75108 Uppsala, Sweden
| | - Linda Arngården
- Department of Immunology, Genetics and Pathology, Uppsala University, Science for Life Laboratory, Biomedical center, SE-75108 Uppsala, Sweden
| | - Omer Ishaq
- Department of Information Technology, Centre for Image Analysis, Uppsala University, Science for Life Laboratory, SE-75105 Uppsala, Sweden
| | - Axel Klaesson
- Department of Immunology, Genetics and Pathology, Uppsala University, Science for Life Laboratory, Biomedical center, SE-75108 Uppsala, Sweden
| | - Malte Kühnemund
- Department of Immunology, Genetics and Pathology, Uppsala University, Science for Life Laboratory, Biomedical center, SE-75108 Uppsala, Sweden
| | - Karin Grannas
- Department of Immunology, Genetics and Pathology, Uppsala University, Science for Life Laboratory, Biomedical center, SE-75108 Uppsala, Sweden
| | - Björn Koos
- Department of Immunology, Genetics and Pathology, Uppsala University, Science for Life Laboratory, Biomedical center, SE-75108 Uppsala, Sweden
| | - Xiaoyan Qian
- Department of Biochemistry and biophysics, Stockholm University, Science for Life Laboratory, Svante Arrhenius väg 16C, SE-10691 Stockholm, Sweden
| | - Petter Ranefall
- Department of Information Technology, Centre for Image Analysis, Uppsala University, Science for Life Laboratory, SE-75105 Uppsala, Sweden
| | - Tomasz Krzywkowski
- Department of Biochemistry and biophysics, Stockholm University, Science for Life Laboratory, Svante Arrhenius väg 16C, SE-10691 Stockholm, Sweden
| | - Hjalmar Brismar
- Science for Life Laboratory, Royal Institute of Technology, Box 1031, SE-171 21 Solna, Sweden
| | - Mats Nilsson
- 1] Department of Immunology, Genetics and Pathology, Uppsala University, Science for Life Laboratory, Biomedical center, SE-75108 Uppsala, Sweden [2] Department of Biochemistry and biophysics, Stockholm University, Science for Life Laboratory, Svante Arrhenius väg 16C, SE-10691 Stockholm, Sweden
| | - Carolina Wählby
- Department of Information Technology, Centre for Image Analysis, Uppsala University, Science for Life Laboratory, SE-75105 Uppsala, Sweden
| | - Ola Söderberg
- Department of Immunology, Genetics and Pathology, Uppsala University, Science for Life Laboratory, Biomedical center, SE-75108 Uppsala, Sweden
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5
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Koos B, Cane G, Grannas K, Löf L, Arngården L, Heldin J, Clausson CM, Klaesson A, Hirvonen MK, de Oliveira FMS, Talibov VO, Pham NT, Auer M, Danielson UH, Haybaeck J, Kamali-Moghaddam M, Söderberg O. Proximity-dependent initiation of hybridization chain reaction. Nat Commun 2015; 6:7294. [PMID: 26065580 PMCID: PMC4490387 DOI: 10.1038/ncomms8294] [Citation(s) in RCA: 72] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2014] [Accepted: 04/24/2015] [Indexed: 11/09/2022] Open
Abstract
Sensitive detection of protein interactions and post-translational modifications of native proteins is a challenge for research and diagnostic purposes. A method for this, which could be used in point-of-care devices and high-throughput screening, should be reliable, cost effective and robust. To achieve this, here we design a method (proxHCR) that combines the need for proximal binding with hybridization chain reaction (HCR) for signal amplification. When two oligonucleotide hairpins conjugated to antibodies bind in close proximity, they can be activated to reveal an initiator sequence. This starts a chain reaction of hybridization events between a pair of fluorophore-labelled oligonucleotide hairpins, generating a fluorescent product. In conclusion, we show the applicability of the proxHCR method for the detection of protein interactions and posttranslational modifications in microscopy and flow cytometry. As no enzymes are needed, proxHCR may be an inexpensive and robust alternative to proximity ligation assays. Proximity ligation assays are a sensitive method for detecting protein interactions, but require the addition of enzymes. Here the authors introduce proxHCR, an enzyme-free method of detecting interactions in close proximity by inducing a hybribization chain reaction (HCR) of fluorescently labelled oligonucleotides.
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Affiliation(s)
- Björn Koos
- Uppsala University, Department of Immunology, Genetics and Pathology, Science for Life Laboratory, Biomedical center, Husargatan 3, Box 815, SE-75108 Uppsala, Sweden
| | - Gaëlle Cane
- Uppsala University, Department of Immunology, Genetics and Pathology, Science for Life Laboratory, Biomedical center, Husargatan 3, Box 815, SE-75108 Uppsala, Sweden
| | - Karin Grannas
- Uppsala University, Department of Immunology, Genetics and Pathology, Science for Life Laboratory, Biomedical center, Husargatan 3, Box 815, SE-75108 Uppsala, Sweden
| | - Liza Löf
- Uppsala University, Department of Immunology, Genetics and Pathology, Science for Life Laboratory, Biomedical center, Husargatan 3, Box 815, SE-75108 Uppsala, Sweden
| | - Linda Arngården
- Uppsala University, Department of Immunology, Genetics and Pathology, Science for Life Laboratory, Biomedical center, Husargatan 3, Box 815, SE-75108 Uppsala, Sweden
| | - Johan Heldin
- Uppsala University, Department of Immunology, Genetics and Pathology, Science for Life Laboratory, Biomedical center, Husargatan 3, Box 815, SE-75108 Uppsala, Sweden
| | - Carl-Magnus Clausson
- Uppsala University, Department of Immunology, Genetics and Pathology, Science for Life Laboratory, Biomedical center, Husargatan 3, Box 815, SE-75108 Uppsala, Sweden
| | - Axel Klaesson
- Uppsala University, Department of Immunology, Genetics and Pathology, Science for Life Laboratory, Biomedical center, Husargatan 3, Box 815, SE-75108 Uppsala, Sweden
| | - M Karoliina Hirvonen
- Uppsala University, Department of Immunology, Genetics and Pathology, Science for Life Laboratory, Biomedical center, Husargatan 3, Box 815, SE-75108 Uppsala, Sweden
| | - Felipe M S de Oliveira
- Uppsala University, Department of Immunology, Genetics and Pathology, Science for Life Laboratory, Biomedical center, Husargatan 3, Box 815, SE-75108 Uppsala, Sweden
| | - Vladimir O Talibov
- Department of Chemistry-BMC, Box 256, Uppsala University, SE-75123 Uppsala, Sweden
| | - Nhan T Pham
- School of Biological Sciences and School of Biomedical Sciences, University of Edinburgh, C H Waddington Building, Max Born Cresent, Kings Buildings, Edinburgh EH9 3BF, UK
| | - Manfred Auer
- School of Biological Sciences and School of Biomedical Sciences, University of Edinburgh, C H Waddington Building, Max Born Cresent, Kings Buildings, Edinburgh EH9 3BF, UK
| | - U Helena Danielson
- Department of Chemistry-BMC, Box 256, Uppsala University, SE-75123 Uppsala, Sweden
| | - Johannes Haybaeck
- Institute of Pathology, Medical University of Graz, A-8036 Graz, Austria
| | - Masood Kamali-Moghaddam
- Uppsala University, Department of Immunology, Genetics and Pathology, Science for Life Laboratory, Biomedical center, Husargatan 3, Box 815, SE-75108 Uppsala, Sweden
| | - Ola Söderberg
- Uppsala University, Department of Immunology, Genetics and Pathology, Science for Life Laboratory, Biomedical center, Husargatan 3, Box 815, SE-75108 Uppsala, Sweden
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6
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Mansouri L, Sutton LA, Ljungström V, Bondza S, Arngården L, Bhoi S, Larsson J, Cortese D, Kalushkova A, Plevova K, Young E, Gunnarsson R, Falk-Sörqvist E, Lönn P, Muggen AF, Yan XJ, Sander B, Enblad G, Smedby KE, Juliusson G, Belessi C, Rung J, Chiorazzi N, Strefford JC, Langerak AW, Pospisilova S, Davi F, Hellström M, Jernberg-Wiklund H, Ghia P, Söderberg O, Stamatopoulos K, Nilsson M, Rosenquist R. Functional loss of IκBε leads to NF-κB deregulation in aggressive chronic lymphocytic leukemia. ACTA ACUST UNITED AC 2015; 212:833-43. [PMID: 25987724 PMCID: PMC4451125 DOI: 10.1084/jem.20142009] [Citation(s) in RCA: 78] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2014] [Accepted: 04/23/2015] [Indexed: 12/24/2022]
Abstract
Mansouri et al. applied targeted deep sequencing to identify mutations within NF-κB core complex genes in CLL. NFKBIE, the gene encoding the inhibitory IκBε molecule, was most frequently mutated, especially in poor-prognostic subgroups of CLL. The authors show that NFKBIE mutations were associated with significantly reduced IkBε expression and p65 inhibition, ultimately leading to NF-κB activation and a more aggressive disease. NF-κB is constitutively activated in chronic lymphocytic leukemia (CLL); however, the implicated molecular mechanisms remain largely unknown. Thus, we performed targeted deep sequencing of 18 core complex genes within the NF-κB pathway in a discovery and validation CLL cohort totaling 315 cases. The most frequently mutated gene was NFKBIE (21/315 cases; 7%), which encodes IκBε, a negative regulator of NF-κB in normal B cells. Strikingly, 13 of these cases carried an identical 4-bp frameshift deletion, resulting in a truncated protein. Screening of an additional 377 CLL cases revealed that NFKBIE aberrations predominated in poor-prognostic patients and were associated with inferior outcome. Minor subclones and/or clonal evolution were also observed, thus potentially linking this recurrent event to disease progression. Compared with wild-type patients, NFKBIE-deleted cases showed reduced IκBε protein levels and decreased p65 inhibition, along with increased phosphorylation and nuclear translocation of p65. Considering the central role of B cell receptor (BcR) signaling in CLL pathobiology, it is notable that IκBε loss was enriched in aggressive cases with distinctive stereotyped BcR, likely contributing to their poor prognosis, and leading to an altered response to BcR inhibitors. Because NFKBIE deletions were observed in several other B cell lymphomas, our findings suggest a novel common mechanism of NF-κB deregulation during lymphomagenesis.
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Affiliation(s)
- Larry Mansouri
- Department of Immunology, Genetics, and Pathology, Science for Life Laboratory, Uppsala University, 751 05 Uppsala, Sweden
| | - Lesley-Ann Sutton
- Department of Immunology, Genetics, and Pathology, Science for Life Laboratory, Uppsala University, 751 05 Uppsala, Sweden
| | - Viktor Ljungström
- Department of Immunology, Genetics, and Pathology, Science for Life Laboratory, Uppsala University, 751 05 Uppsala, Sweden
| | - Sina Bondza
- Department of Immunology, Genetics, and Pathology, Science for Life Laboratory, Uppsala University, 751 05 Uppsala, Sweden
| | - Linda Arngården
- Department of Immunology, Genetics, and Pathology, Science for Life Laboratory, Uppsala University, 751 05 Uppsala, Sweden
| | - Sujata Bhoi
- Department of Immunology, Genetics, and Pathology, Science for Life Laboratory, Uppsala University, 751 05 Uppsala, Sweden
| | - Jimmy Larsson
- Department of Immunology, Genetics, and Pathology, Science for Life Laboratory, Uppsala University, 751 05 Uppsala, Sweden
| | - Diego Cortese
- Department of Immunology, Genetics, and Pathology, Science for Life Laboratory, Uppsala University, 751 05 Uppsala, Sweden
| | - Antonia Kalushkova
- Department of Immunology, Genetics, and Pathology, Science for Life Laboratory, Uppsala University, 751 05 Uppsala, Sweden
| | - Karla Plevova
- Central European Institute of Technology, Masaryk University and University Hospital Brno, 601 77 Brno, Czech Republic
| | - Emma Young
- Department of Immunology, Genetics, and Pathology, Science for Life Laboratory, Uppsala University, 751 05 Uppsala, Sweden
| | - Rebeqa Gunnarsson
- Department of Immunology, Genetics, and Pathology, Science for Life Laboratory, Uppsala University, 751 05 Uppsala, Sweden
| | - Elin Falk-Sörqvist
- Department of Immunology, Genetics, and Pathology, Science for Life Laboratory, Uppsala University, 751 05 Uppsala, Sweden
| | - Peter Lönn
- Department of Immunology, Genetics, and Pathology, Science for Life Laboratory, Uppsala University, 751 05 Uppsala, Sweden
| | - Alice F Muggen
- Department of Immunology, Erasmus MC, University Medical Center Rotterdam, 3000 CE Rotterdam, Netherlands
| | - Xiao-Jie Yan
- The Karches Center for Chronic Lymphocytic Leukemia Research, The Feinstein Institute for Medical Research, Manhasset, NY 11030
| | - Birgitta Sander
- Department of Laboratory Medicine, Division of Pathology, Karolinska Institutet and Karolinska University Hospital, 141 86 Huddinge, Stockholm, Sweden
| | - Gunilla Enblad
- Department of Immunology, Genetics, and Pathology, Science for Life Laboratory, Uppsala University, 751 05 Uppsala, Sweden
| | - Karin E Smedby
- Clinical Epidemiology Unit, Department of Medicine, Karolinska Institutet, 171 76 Stockholm, Sweden
| | - Gunnar Juliusson
- Department of Laboratory Medicine, Lund Stem Cell Center, Lund University, 22184 Lund, Sweden
| | - Chrysoula Belessi
- Hematology Department, General Hospital of Nikea, 18454 Piraeus, Greece
| | - Johan Rung
- Department of Immunology, Genetics, and Pathology, Science for Life Laboratory, Uppsala University, 751 05 Uppsala, Sweden
| | - Nicholas Chiorazzi
- The Karches Center for Chronic Lymphocytic Leukemia Research, The Feinstein Institute for Medical Research, Manhasset, NY 11030
| | - Jonathan C Strefford
- Cancer Sciences Academic Unit, Faculty of Medicine, University of Southampton, Southampton SO16 6YD, England, UK
| | - Anton W Langerak
- Department of Immunology, Erasmus MC, University Medical Center Rotterdam, 3000 CE Rotterdam, Netherlands
| | - Sarka Pospisilova
- Central European Institute of Technology, Masaryk University and University Hospital Brno, 601 77 Brno, Czech Republic
| | - Frederic Davi
- Department of Hematology, Pitié-Salpêtrière Hospital, F-75013 Paris, France Cordeliers Research Center, UMR_S 1138, UPMC University of Paris 6, F-75005 Paris, France
| | - Mats Hellström
- Department of Immunology, Genetics, and Pathology, Science for Life Laboratory, Uppsala University, 751 05 Uppsala, Sweden
| | - Helena Jernberg-Wiklund
- Department of Immunology, Genetics, and Pathology, Science for Life Laboratory, Uppsala University, 751 05 Uppsala, Sweden
| | - Paolo Ghia
- Divisione di Oncologia Sperimentale, Dipartimento di Onco-Ematologia, IRCCS Istituto Scientifico San Raffaele and Fondazione Centro San Raffaele, 20132 Milano, Italy Università Vita-Salute San Raffaele, 20132 Milano, Italy
| | - Ola Söderberg
- Department of Immunology, Genetics, and Pathology, Science for Life Laboratory, Uppsala University, 751 05 Uppsala, Sweden
| | - Kostas Stamatopoulos
- Department of Immunology, Genetics, and Pathology, Science for Life Laboratory, Uppsala University, 751 05 Uppsala, Sweden Institute of Applied Biosciences, Center for Research and Technology Hellas, 57001 Thessaloniki, Greece
| | - Mats Nilsson
- Department of Immunology, Genetics, and Pathology, Science for Life Laboratory, Uppsala University, 751 05 Uppsala, Sweden Department of Biochemistry and Biophysics, Science for Life Laboratory, Stockholm University, 106 91 Stockholm, Sweden
| | - Richard Rosenquist
- Department of Immunology, Genetics, and Pathology, Science for Life Laboratory, Uppsala University, 751 05 Uppsala, Sweden
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7
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Grannas K, Arngården L, Lönn P, Mazurkiewicz M, Blokzijl A, Zieba A, Söderberg O. Crosstalk between Hippo and TGFβ: Subcellular Localization of YAP/TAZ/Smad Complexes. J Mol Biol 2015; 427:3407-15. [PMID: 25937570 DOI: 10.1016/j.jmb.2015.04.015] [Citation(s) in RCA: 104] [Impact Index Per Article: 11.6] [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: 12/17/2014] [Revised: 04/23/2015] [Accepted: 04/25/2015] [Indexed: 10/23/2022]
Abstract
The Hippo pathway plays a crucial role in growth control, proliferation and tumor suppression. Activity of the signaling pathway is associated with cell density sensing and tissue organization. Furthermore, the Hippo pathway helps to coordinate cellular processes through crosstalk with growth-factor-mediated signaling pathways such as TGFβ. Here we have examined the localization of interactions between proteins of the Hippo pathway (YAP/TAZ) and TGFβ (Smad2/3) signaling pathway by using in situ proximity ligation assays. We investigated the formation of protein complexes between YAP/TAZ and Smad2/3 and examined how these interactions were affected by TGFβ stimulation and cell density in HaCaT keratinocytes and in Smad4-deficient HT29 colon cancer cells. We demonstrate that TGFβ induces formation of YAP/TAZ-Smad2/3 complexes in HaCaT cells. Under sparse cell conditions, the complexes were detected to a higher degree and were predominantly located in the nucleus, while under dense culture conditions, the complexes were fewer and mainly located in the cytoplasm. Surprisingly, we could not detect any YAP/TAZ-Smad2/3 complexes in HT29 cells. To examine if Smad4 deficiency was responsible for the absence of interactions, we treated HaCaT cells with siRNA targeting Smad4. However, we could still observe complex formation in the siRNA-treated cells, suggesting that Smad4 is not essential for the YAP-Smad2/3 interaction. In conclusion, this study shows localized, density-dependent formation of YAP/TAZ-Smad2/3 complexes in HaCaT cells and provides evidence supporting a crosstalk between the Hippo and the TGFβ signaling pathways.
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Affiliation(s)
- Karin Grannas
- Department of Immunology, Genetics and Pathology, Science for Life Laboratory, Uppsala University, 751 85 Uppsala, Sweden
| | - Linda Arngården
- Department of Immunology, Genetics and Pathology, Science for Life Laboratory, Uppsala University, 751 85 Uppsala, Sweden
| | - Peter Lönn
- Department of Immunology, Genetics and Pathology, Science for Life Laboratory, Uppsala University, 751 85 Uppsala, Sweden
| | - Magdalena Mazurkiewicz
- Department of Oncology-Pathology, Karolinska University Hospital, 171 76 Stockholm, Sweden
| | - Andries Blokzijl
- Department of Immunology, Genetics and Pathology, Science for Life Laboratory, Uppsala University, 751 85 Uppsala, Sweden
| | - Agata Zieba
- Department of Immunology, Genetics and Pathology, Science for Life Laboratory, Uppsala University, 751 85 Uppsala, Sweden
| | - Ola Söderberg
- Department of Immunology, Genetics and Pathology, Science for Life Laboratory, Uppsala University, 751 85 Uppsala, Sweden.
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