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Edema H, Bawin T, Olsen S, Krause K, Karppinen K. Parasitic dodder expresses an arsenal of secreted cellulases with multi-substrate specificity during host invasion. Plant Physiol Biochem 2024; 210:108633. [PMID: 38663263 DOI: 10.1016/j.plaphy.2024.108633] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2024] [Revised: 03/26/2024] [Accepted: 04/15/2024] [Indexed: 05/12/2024]
Abstract
Cuscuta campestris is a common and problematic parasitic plant which relies on haustoria to connect to and siphon nutrients from host plants. Glycoside hydrolase family 9 (GH9) cellulases (EC 3.2.1.4) play critical roles in plant cell wall biosynthesis and disassembly, but their roles during Cuscuta host invasion remains underexplored. In this study, we identified 22 full-length GH9 cellulase genes in C. campestris genome, which encoded fifteen secreted and seven membrane-anchored cellulases that showed distinct phylogenetic relationships. Expression profiles suggested that some of the genes are involved in biosynthesis and remodeling of the parasite's cell wall during haustoriogenesis, while other genes encoding secreted B- and C-type cellulases are tentatively associated with degrading host cell walls during invasion. Transcriptomic data in a host-free system and in the presence of susceptible or partially resistant tomato hosts, showed for especially GH9B7, GH9B11 and GH9B12 a shift in expression profiles in the presence of hosts, being more highly expressed during host attachment, indicating that Cuscuta can tune cellulase expression in response to a host. Functional analyses of recombinant B- and C-type cellulases showed endoglucanase activities over wide pH and temperature conditions, and activities towards multiple cellulose and hemicellulose substrates. These findings improve our understanding of host cell wall disassembly by Cuscuta, and cellulase activity towards broad substrate range potentially explain its wide host range. This is the first study to provide a broad biochemical insight into Cuscuta GH9 cellulases, which based on our study may have potential applications in industrial bioprocessing.
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Affiliation(s)
- Hilary Edema
- Department of Arctic and Marine Biology, UiT the Arctic University of Norway, Tromsø, 9037, Norway; The Arctic Centre for Sustainable Energy, UiT the Arctic University of Norway, Tromsø, 9037, Norway.
| | - Thomas Bawin
- Department of Arctic and Marine Biology, UiT the Arctic University of Norway, Tromsø, 9037, Norway.
| | - Stian Olsen
- Department of Arctic and Marine Biology, UiT the Arctic University of Norway, Tromsø, 9037, Norway.
| | - Kirsten Krause
- Department of Arctic and Marine Biology, UiT the Arctic University of Norway, Tromsø, 9037, Norway; The Arctic Centre for Sustainable Energy, UiT the Arctic University of Norway, Tromsø, 9037, Norway.
| | - Katja Karppinen
- Department of Arctic and Marine Biology, UiT the Arctic University of Norway, Tromsø, 9037, Norway; The Arctic Centre for Sustainable Energy, UiT the Arctic University of Norway, Tromsø, 9037, Norway.
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2
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Bawin T, Krause K. Rising from the shadows: Selective foraging in model shoot parasitic plants. Plant Cell Environ 2024; 47:1118-1127. [PMID: 38058242 DOI: 10.1111/pce.14781] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Revised: 11/17/2023] [Accepted: 11/28/2023] [Indexed: 12/08/2023]
Abstract
Despite being sessile, plants nonetheless forage for resources by modulating their growth. Adaptative foraging in response to changes in resource availability and presence of neighbours has strong implications for performance and fitness. It is an even more pressing issue for parasitic plants, which draw resources directly from other plants. Indeed, parasitic plants were demonstrated over the years to direct their growth towards preferred hosts and invest resources in parasitism relative to host quality. In contrast to root parasites that rely mostly on chemical cues, some shoot parasites seem to profit from the ability to integrate different types of abiotic and biotic cues. While significant progress in this field has been made recently, there are still many open questions regarding the molecular perception and the integration of diverse signalling pathways under different ecological contexts. Addressing how different cues are integrated in parasitic plants will be important when unravelling variations in plant interaction pathways, and essential to predict the spread of parasites in natural and agricultural environments. In this review, we discuss this with a focus on Cuscuta species as an emerging parasitic model, and provide research perspectives based on the recent advances in the topic and plant-plant interactions in general.
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Affiliation(s)
- Thomas Bawin
- Department of Arctic and Marine Biology, UiT The Arctic University of Norway, Tromsø, Norway
| | - Kirsten Krause
- Department of Arctic and Marine Biology, UiT The Arctic University of Norway, Tromsø, Norway
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3
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Bawin T, Didriksen A, Faehn C, Olsen S, Sørensen I, Rose JKC, Krause K. Cuscuta campestris fine-tunes gene expression during haustoriogenesis as an adaptation to different hosts. Plant Physiol 2023; 194:258-273. [PMID: 37706590 PMCID: PMC10756757 DOI: 10.1093/plphys/kiad505] [Citation(s) in RCA: 2] [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] [Subscribe] [Scholar Register] [Received: 08/11/2023] [Revised: 08/11/2023] [Accepted: 08/26/2023] [Indexed: 09/15/2023]
Abstract
The Cuscuta genus comprises obligate parasitic plants that have an unusually wide host range. Whether Cuscuta uses different infection strategies for different hosts or whether the infection strategy is mechanistically and enzymatically conserved remains unknown. To address this, we investigated molecular events during the interaction between field dodder (Cuscuta campestris) and two host species of the Solanum genus that are known to react differently to parasitic infection. We found that host gene induction, particularly of cell wall fortifying genes, coincided with a differential induction of genes for cell wall degradation in the parasite in the cultivated tomato (Solanum lycopersicum) but not in a wild relative (Solanum pennellii). This indicates that the parasite can adjust its gene expression in response to its host. This idea was supported by the increased expression of C. campestris genes encoding an endo-β-1,4-mannanase in response to exposure of the parasite to purified mono- and polysaccharides in a host-independent infection system. Our results suggest multiple key roles of the host cell wall in determining the outcome of an infection attempt.
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Affiliation(s)
- Thomas Bawin
- Department of Arctic and Marine Biology, UiT The Arctic University of Norway, Tromsø 9019, Norway
| | - Alena Didriksen
- Department of Arctic and Marine Biology, UiT The Arctic University of Norway, Tromsø 9019, Norway
| | - Corine Faehn
- Department of Arctic and Marine Biology, UiT The Arctic University of Norway, Tromsø 9019, Norway
| | - Stian Olsen
- Department of Arctic and Marine Biology, UiT The Arctic University of Norway, Tromsø 9019, Norway
| | - Iben Sørensen
- Plant Biology Section, School of Integrative Plant Science, Cornell University, Ithaca, NY 14853, USA
| | - Jocelyn K C Rose
- Plant Biology Section, School of Integrative Plant Science, Cornell University, Ithaca, NY 14853, USA
| | - Kirsten Krause
- Department of Arctic and Marine Biology, UiT The Arctic University of Norway, Tromsø 9019, Norway
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Guertler D, Krause K, Moehring A, Bischof G, Batra A, Freyer-Adam J, Ulbricht S, Rumpf HJ, Wurm S, Cuijpers P, Lucht M, John U, Meyer C. E-Health intervention for subthreshold depression: Reach and two-year effects of a randomized controlled trial. J Affect Disord 2023; 339:33-42. [PMID: 37392942 DOI: 10.1016/j.jad.2023.06.059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Revised: 06/19/2023] [Accepted: 06/26/2023] [Indexed: 07/03/2023]
Abstract
BACKGROUND There is evidence for e-Health interventions for full-blown depression. Little is known regarding commonly untreated subthreshold depression in primary care. This randomized controlled multi-centre trial assessed reach and two-year-effects of a proactive e-Health intervention (ActiLife) for patients with subthreshold depression. METHODS Primary care and hospital patients were screened for subthreshold depression. Over 6 months, ActiLife participants received three individualized feedback letters and weekly messages promoting self-help strategies against depression, e.g., dealing with unhelpful thoughts or behavioural activation. The primary outcome depressive symptom severity (Patient Health Questionnaire;PHQ-8) and secondary outcomes were assessed 6, 12 and 24 months. RESULTS Of those invited, n = 618(49.2 %) agreed to participate. Of them, 456 completed the baseline interview and were randomized to ActiLife (n = 227) or assessment only (n = 226). Generalised estimation equation analyses adjusting for site, setting and baseline depression revealed that depressive symptom severity declined over time, with no significant group differences at 6 (mean difference = 0.47 points; d = 0.12) and 24 months (mean difference = -0.05 points; d = -0.01). Potential adverse effects were observed at 12 months, with higher depressive symptom severity for ActiLife than control participants (mean difference = 1.33 points; d = 0.35). No significant differences in rates of reliable deterioration or reliable improvement of depressive symptoms were observed. ActiLife increased applied self-help strategies at 6 (mean difference = 0.32; d = 0.27) and 24 months (mean difference = 0.22; d = 0.19), but not at 12 months (mean difference = 0.18; d = 0.15). LIMITATIONS Self-report measures and lack of information on patients' mental health treatment. DISCUSSION ActiLife yielded satisfactory reach and increased the use of self-help strategies. Data were inconclusive in terms of depressive symptom changes.
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Affiliation(s)
- D Guertler
- Institute for Community Medicine, Department of Prevention Research and Social Medicine, University Medicine Greifswald, Greifswald, Germany; DZHK (German Centre for Cardiovascular Research), partner site Greifswald, Germany.
| | - K Krause
- Evangelic Hospital Bethania, Greifswald, Germany
| | - A Moehring
- DZHK (German Centre for Cardiovascular Research), partner site Greifswald, Germany; Institute for Community Medicine, Department of Methods in Community Medicine, University Medicine Greifswald, Greifswald, Germany
| | - G Bischof
- Department of Psychiatry and Psychotherapy, University of Lübeck, Lübeck, Germany
| | - A Batra
- Department of Psychiatry and Psychotherapy, University Hospital of Tübingen, Tübingen, Germany
| | - J Freyer-Adam
- DZHK (German Centre for Cardiovascular Research), partner site Greifswald, Germany; Institute for Medical Psychology, University Medicine Greifswald, Greifswald, Germany
| | - S Ulbricht
- Institute for Community Medicine, Department of Prevention Research and Social Medicine, University Medicine Greifswald, Greifswald, Germany; DZHK (German Centre for Cardiovascular Research), partner site Greifswald, Germany
| | - H J Rumpf
- Department of Psychiatry and Psychotherapy, University of Lübeck, Lübeck, Germany
| | - S Wurm
- Institute for Community Medicine, Department of Prevention Research and Social Medicine, University Medicine Greifswald, Greifswald, Germany
| | - P Cuijpers
- Department of Clinical, Neuro- and Developmental Psychology, Amsterdam Public Health Institute, and WHO Collaborating Centre for Research and Dissemination of Psychological Interventions, Vrije Universiteit Amsterdam, Amsterdam, the Netherlands
| | - M Lucht
- Department of Psychiatry and Psychotherapy at Helios Hanseklinikum Stralsund, Stralsund, Germany; Department of Psychiatry and Psychotherapy, University Medicine Greifswald, Greifswald, Germany
| | - U John
- Institute for Community Medicine, Department of Prevention Research and Social Medicine, University Medicine Greifswald, Greifswald, Germany; DZHK (German Centre for Cardiovascular Research), partner site Greifswald, Germany
| | - C Meyer
- Institute for Community Medicine, Department of Prevention Research and Social Medicine, University Medicine Greifswald, Greifswald, Germany; DZHK (German Centre for Cardiovascular Research), partner site Greifswald, Germany
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Boeing A, Mavrommatis L, Daya NM, Zhuge H, Volke L, Kocabas A, Kneifel M, Athamneh M, Krause K, Südkamp N, Döring K, Theiss C, Roos A, Zaehres H, Güttsches AK, Vorgerd M. Generation of two human iPSC lines (HIMRi002-A and HIMRi003-A) derived from Caveolinopathy patients with rippling muscle disease. Stem Cell Res 2023; 72:103220. [PMID: 37839261 DOI: 10.1016/j.scr.2023.103220] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Revised: 09/28/2023] [Accepted: 10/02/2023] [Indexed: 10/17/2023] Open
Abstract
Here we introduce the human induced pluripotent stem cell lines (hiPSCs), HIMRi002-A and HIMRi003-A, generated from cultured dermal fibroblasts of 61-year-old (HIMRi002-A) and 38-year-old (HIMRi003-A) female patients, carrying a known heterozygous pathogenic variant (p.A46T) in the Caveolin 3 (CAV3) gene, via lentiviral expression of OCT4, SOX2, KLF4 and c-MYC. HIMRi002-A and HIMRi003-A display typical embryonic stem cell-like morphology, carry the p.A46T CAV3 gene mutation, express several pluripotent stem cell markers, retain normal karyotype (46, XX) and can differentiate in all three germ layers. We postulate that the HIMRi002-A and HIMRi003-A iPSC lines can be used for the characterization of CAV3-associated pathomechanisms and for developing new therapeutic options.
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Affiliation(s)
- A Boeing
- Department of Neurology, Heimer Institute for Muscle Research, BG-University Hospital Bergmannsheil, Ruhr-University Bochum, 44789 Bochum, Germany
| | - L Mavrommatis
- Department of Neurology, Heimer Institute for Muscle Research, BG-University Hospital Bergmannsheil, Ruhr-University Bochum, 44789 Bochum, Germany
| | - N M Daya
- Department of Neurology, Heimer Institute for Muscle Research, BG-University Hospital Bergmannsheil, Ruhr-University Bochum, 44789 Bochum, Germany
| | - H Zhuge
- Department of Neurology, Heimer Institute for Muscle Research, BG-University Hospital Bergmannsheil, Ruhr-University Bochum, 44789 Bochum, Germany
| | - L Volke
- Department of Neurology, Heimer Institute for Muscle Research, BG-University Hospital Bergmannsheil, Ruhr-University Bochum, 44789 Bochum, Germany
| | - A Kocabas
- Department of Neurology, Heimer Institute for Muscle Research, BG-University Hospital Bergmannsheil, Ruhr-University Bochum, 44789 Bochum, Germany
| | - M Kneifel
- Department of Neurology, Heimer Institute for Muscle Research, BG-University Hospital Bergmannsheil, Ruhr-University Bochum, 44789 Bochum, Germany
| | - M Athamneh
- Department of Neurology, Heimer Institute for Muscle Research, BG-University Hospital Bergmannsheil, Ruhr-University Bochum, 44789 Bochum, Germany
| | - K Krause
- Department of Neurology, Heimer Institute for Muscle Research, BG-University Hospital Bergmannsheil, Ruhr-University Bochum, 44789 Bochum, Germany
| | - N Südkamp
- Department of Neurology, Heimer Institute for Muscle Research, BG-University Hospital Bergmannsheil, Ruhr-University Bochum, 44789 Bochum, Germany
| | - K Döring
- Department of Human Genetics, Ruhr-University Bochum, 44801 Bochum, Germany
| | - C Theiss
- Department of Cytology, Ruhr-University Bochum, 44801 Bochum, Germany
| | - A Roos
- Department of Neurology, Heimer Institute for Muscle Research, BG-University Hospital Bergmannsheil, Ruhr-University Bochum, 44789 Bochum, Germany
| | - H Zaehres
- Department of Anatomy and Molecular Embryology, Institute of Anatomy, Ruhr-University Bochum, 44801 Bochum, Germany
| | - A K Güttsches
- Department of Neurology, Heimer Institute for Muscle Research, BG-University Hospital Bergmannsheil, Ruhr-University Bochum, 44789 Bochum, Germany
| | - M Vorgerd
- Department of Neurology, Heimer Institute for Muscle Research, BG-University Hospital Bergmannsheil, Ruhr-University Bochum, 44789 Bochum, Germany.
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6
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Hartenstein M, Albert M, Krause K. The plant vampire diaries: a historic perspective on Cuscuta research. J Exp Bot 2023; 74:2944-2955. [PMID: 36882965 DOI: 10.1093/jxb/erad082] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Accepted: 03/01/2023] [Indexed: 05/21/2023]
Abstract
The angiosperm genus Cuscuta lives as an almost achlorophyllous root- and leafless holoparasite and has therefore occupied scientists for more than a century. The 'evolution' of Cuscuta research started with early studies that established the phylogenetic framework for this unusual genus. It continued to produce groundbreaking cytological, morphological, and physiological insight throughout the second half of the 20th century and culminated in the last two decades in exciting discoveries regarding the molecular basis of Cuscuta parasitism that were facilitated by the modern 'omics' tools and traceable fluorescent marker technologies of the 21st century. This review will show how present activities are inspired by those past breakthroughs. It will describe significant milestones and recurring themes of Cuscuta research and connect these to the remaining as well as newly evolving questions and future directions in this research field that is expected to sustain its strong growth in the future.
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Affiliation(s)
- Maleen Hartenstein
- Department of Biology, Molecular Plant Physiology, Friedrich-Alexander-Universität Erlangen-Nürnberg, Staudtstr. 5, D-91058 Erlangen, Germany
| | - Markus Albert
- Department of Biology, Molecular Plant Physiology, Friedrich-Alexander-Universität Erlangen-Nürnberg, Staudtstr. 5, D-91058 Erlangen, Germany
| | - Kirsten Krause
- Department of Arctic and Marine Biology, UiT The Arctic University of Norway, Framstredet 39, 9019 Tromsø, Norway
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7
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Zangishei Z, Annacondia ML, Gundlach H, Didriksen A, Bruckmüller J, Salari H, Krause K, Martinez G. Parasitic plant small RNA analyses unveil parasite-specific signatures of microRNA retention, loss, and gain. Plant Physiol 2022; 190:1242-1259. [PMID: 35861439 PMCID: PMC9516757 DOI: 10.1093/plphys/kiac331] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Accepted: 06/12/2022] [Indexed: 05/29/2023]
Abstract
Parasitism is a successful life strategy that has evolved independently in several families of vascular plants. The genera Cuscuta and Orobanche represent examples of the two profoundly different groups of parasites: one parasitizing host shoots and the other infecting host roots. In this study, we sequenced and described the overall repertoire of small RNAs from Cuscuta campestris and Orobanche aegyptiaca. We showed that C. campestris contains a number of novel microRNAs (miRNAs) in addition to a conspicuous retention of miRNAs that are typically lacking in other Solanales, while several typically conserved miRNAs seem to have become obsolete in the parasite. One new miRNA appears to be derived from a horizontal gene transfer event. The exploratory analysis of the miRNA population (exploratory due to the absence of a full genomic sequence for reference) from the root parasitic O. aegyptiaca also revealed a loss of a number of miRNAs compared to photosynthetic species from the same order. In summary, our study shows partly similar evolutionary signatures in the RNA silencing machinery in both parasites. Our data bear proof for the dynamism of this regulatory mechanism in parasitic plants.
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Affiliation(s)
| | | | - Heidrun Gundlach
- Helmholtz Zentrum München (HMGU), Plant Genome and Systems Biology (PGSB), Neuherberg 85764, Germany
| | - Alena Didriksen
- Department of Arctic and Marine Biology, Faculty of Biosciences, Fisheries and Economics, UiT The Arctic University of Norway, Tromsø 9019, Norway
| | | | - Hooman Salari
- Department of Production Engineering and Plant Genetics, Faculty of Science and Agricultural Engineering, Razi University, Kermanshah 67155, Iran
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8
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Brembilla N, Modarressi A, André-Lévigne D, Vuagnat H, Durual S, Marger L, Boehncke W, Krause K, Preynat-Seauve O. LB1027 An adipose-derived stem cell-engineered patch represents a promising treatment for chronic wounds. J Invest Dermatol 2022. [DOI: 10.1016/j.jid.2022.05.1056] [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: 10/17/2022]
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9
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Krause K, Goschzik T, Dörner E, Pietsch T. Genetic landscape of large cell/anaplastic medulloblastoma
– more than one disease. KLINISCHE PADIATRIE 2022. [DOI: 10.1055/s-0042-1748732] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- K Krause
- University of Bonn Medical Center, Dept. of Neuropathology, Bonn,
Germany
| | - T Goschzik
- University of Bonn Medical Center, Dept. of Neuropathology, Bonn,
Germany
| | - E Dörner
- University of Bonn Medical Center, Dept. of Neuropathology, Bonn,
Germany
| | - T Pietsch
- University of Bonn Medical Center, Dept. of Neuropathology, Bonn,
Germany
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10
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Bawin T, Bruckmüller J, Olsen S, Krause K. A host-free transcriptome for haustoriogenesis in Cuscuta campestris: Signature gene expression identifies markers of successive development stages. Physiol Plant 2022; 174:e13628. [PMID: 35048368 PMCID: PMC9313786 DOI: 10.1111/ppl.13628] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Accepted: 01/05/2022] [Indexed: 05/10/2023]
Abstract
The development of the infection organ of the parasitic angiosperm genus Cuscuta is a dynamic process that is normally obscured from view as it happens endophytically in its host. We artificially induced haustoriogenesis in Cuscuta campestris by far-red light to define specific morphologically different stages and analyze their transcriptional patterns. This information enabled us to extract sets of high-confidence housekeeping and marker genes for the different stages, validated in a natural infection setting on a compatible host. This study provides a framework for more reproducible investigations of haustoriogenesis and the processes governing host-parasite interactions in shoot parasites, with C. campestris as a model species.
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Affiliation(s)
- Thomas Bawin
- Department of Arctic and Marine BiologyUiT The Arctic University of NorwayTromsøNorway
| | - Julien Bruckmüller
- Department of Arctic and Marine BiologyUiT The Arctic University of NorwayTromsøNorway
| | - Stian Olsen
- Department of Arctic and Marine BiologyUiT The Arctic University of NorwayTromsøNorway
| | - Kirsten Krause
- Department of Arctic and Marine BiologyUiT The Arctic University of NorwayTromsøNorway
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11
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Preynat-Seauve O, Lanza F, Brioudes E, Modarressi A, Vuagnat H, Boehncke W, Krause K, Brembilla N. 369 An Adipose-derived Stem Cell-engineered matrix represents a promising treatment for chronic wounds. J Invest Dermatol 2021. [DOI: 10.1016/j.jid.2021.08.378] [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: 11/25/2022]
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12
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Meyer C, Gürtler D, Krause K, Möhring A, Freyer-Adam J, Baumann S, Ulbricht S, Batra A, Bischof G, Rumpf RJ, Wurm S, John U. Computer-based interventions targeting hazardous alcohol consumption and depressiveness among medical care patients: Preliminary findings from a randomized controlled proof of concept trial. Das Gesundheitswesen 2021. [DOI: 10.1055/s-0041-1732736] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- C Meyer
- Abteilung für Sozialmedizin und Prävention, Institut für Community Medicine, Universitätsmedizin Greifswald
- DZHK, Standort Greifswald
| | - D Gürtler
- Abteilung für Sozialmedizin und Prävention, Institut für Community Medicine, Universitätsmedizin Greifswald
- DZHK, Standort Greifswald
| | - K Krause
- Institut für Medizinische Psychologie, Universitätsmedizin Greifswald
| | - A Möhring
- Abteilung für Sozialmedizin und Prävention, Institut für Community Medicine, Universitätsmedizin Greifswald
- DZHK, Standort Greifswald
| | - J Freyer-Adam
- DZHK, Standort Greifswald
- Institut für Medizinische Psychologie, Universitätsmedizin Greifswald
| | - S Baumann
- Abteilung für Sozialmedizin und Prävention, Institut für Community Medicine, Universitätsmedizin Greifswald
- DZHK, Standort Greifswald
- Institut und Poliklinik für Arbeits und Sozialmedizin
| | - S Ulbricht
- Abteilung für Sozialmedizin und Prävention, Institut für Community Medicine, Universitätsmedizin Greifswald
- DZHK, Standort Greifswald
| | - A Batra
- Klinik für Psychiatrie und Psychotherapie, Universitätsklinikum Tübingen
| | - G Bischof
- Klinik für Psychiatrie und Psychotherapie, Universität Lübeck
| | - RJ Rumpf
- Klinik für Psychiatrie und Psychotherapie, Universität Lübeck
| | - S Wurm
- Abteilung für Sozialmedizin und Prävention, Institut für Community Medicine, Universitätsmedizin Greifswald
| | - U John
- Abteilung für Sozialmedizin und Prävention, Institut für Community Medicine, Universitätsmedizin Greifswald
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13
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Krause K, Gürtler D, Möhring A, Bischof G, Batra A, Rumpf HJ, Wurm S, John U, Meyer C. An individualized proactive e-health intervention promoting a lifestyle against depression: Results of a randomized controlled trial over 24 months. Das Gesundheitswesen 2021. [DOI: 10.1055/s-0041-1732148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- K Krause
- Institute for Medical Psychology, University Medicine Greifswald
| | - D Gürtler
- Institute for Community Medicine, Department of Social Medicine and Prevention, University Medicine Greifswald
- DZHK (German Centre for Cardiovascular Research), partner site Greifswald
| | - A Möhring
- Institute for Community Medicine, Department of Social Medicine and Prevention, University Medicine Greifswald
- DZHK (German Centre for Cardiovascular Research), partner site Greifswald
| | - G Bischof
- Department of Psychiatry, University of Lübeck
| | - A Batra
- Department of Psychiatry and Psychotherapy, University Hospital of Tübingen
| | - H-J Rumpf
- Department of Psychiatry, University of Lübeck
| | - S Wurm
- Institute for Community Medicine, Department of Social Medicine and Prevention, University Medicine Greifswald
| | - U John
- Institute for Community Medicine, Department of Social Medicine and Prevention, University Medicine Greifswald
- DZHK (German Centre for Cardiovascular Research), partner site Greifswald
| | - C Meyer
- Institute for Community Medicine, Department of Social Medicine and Prevention, University Medicine Greifswald
- DZHK (German Centre for Cardiovascular Research), partner site Greifswald
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14
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Gürtler D, Möhring A, Krause K, Tomczyk S, Freyer-Adam J, Baumann S, Bischof G, Rumpf HJ, Batra A, Wurm S, John U, Meyer C. Latent alcohol use patterns and their link to depressive symptomatology in medical care patients. Das Gesundheitswesen 2021. [DOI: 10.1055/s-0041-1732121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- D Gürtler
- Institute for Community Medicine, Department of Social Medicine and Prevention, University Medicine Greifswald
- DZHK (German Centre for Cardiovascular Research), partner site Greifswald
| | - A Möhring
- Institute for Community Medicine, Department of Social Medicine and Prevention, University Medicine Greifswald
- DZHK (German Centre for Cardiovascular Research), partner site Greifswald
| | - K Krause
- Institute for Medical Psychology, University Medicine Greifswald
| | - S Tomczyk
- Institute of Psychology, Department of Health and Prevention, University of Greifswald
| | - J Freyer-Adam
- DZHK (German Centre for Cardiovascular Research), partner site Greifswald
- Institute for Medical Psychology, University Medicine Greifswald
| | - S Baumann
- Institute for Community Medicine, Department of Social Medicine and Prevention, University Medicine Greifswald
- DZHK (German Centre for Cardiovascular Research), partner site Greifswald
- Institute and Policlinic for Occupational and Social Medicine, Technische Universität Dresden
| | - G Bischof
- Department of Psychiatry and Psychotherapy, Research Group S:TEP, University of Lübeck
| | - H-J Rumpf
- Department of Psychiatry and Psychotherapy, Research Group S:TEP, University of Lübeck
| | - A Batra
- Department of Psychiatry and Psychotherapy, University Hospital of Tübingen
| | - S Wurm
- Institute for Community Medicine, Department of Social Medicine and Prevention, University Medicine Greifswald
| | - U John
- Institute for Community Medicine, Department of Social Medicine and Prevention, University Medicine Greifswald
- DZHK (German Centre for Cardiovascular Research), partner site Greifswald
| | - C Meyer
- Institute for Community Medicine, Department of Social Medicine and Prevention, University Medicine Greifswald
- DZHK (German Centre for Cardiovascular Research), partner site Greifswald
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15
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Roussel-Gervais A, Sakic A, Cherpin O, Ilmjärv S, Salmon P, Krause K, Alessandrini M. Multiplex gene silencing as a promising tool for development of next generation immune effector cell therapies. Cytotherapy 2021. [DOI: 10.1016/s1465324921003996] [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: 10/21/2022]
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16
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Mlambo T, Roussel-Gervais A, Ilmjärv S, Sakic A, Myburgh R, Bredl S, Salmon P, Pepper M, Krause K, Speck R, Alessandrini M. Development of an off-the-shelf CAR T-cell therapy for HIV: a step towards a universally accessible advanced therapy. Cytotherapy 2021. [DOI: 10.1016/s1465324921004357] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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17
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Fischer K, Lachner LAM, Olsen S, Mulisch M, Krause K. The Enigma of Interspecific Plasmodesmata: Insight From Parasitic Plants. Front Plant Sci 2021; 12:641924. [PMID: 33868340 PMCID: PMC8049502 DOI: 10.3389/fpls.2021.641924] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Accepted: 03/09/2021] [Indexed: 05/29/2023]
Abstract
Parasitic plants live in intimate physical connection with other plants serving as their hosts. These host plants provide the inorganic and organic compounds that the parasites need for their propagation. The uptake of the macromolecular compounds happens through symplasmic connections in the form of plasmodesmata. In contrast to regular plasmodesmata, which connect genetically identical cells of an individual plant, the plasmodesmata that connect the cells of host and parasite join separate individuals belonging to different species and are therefore termed "interspecific". The existence of such interspecific plasmodesmata was deduced either indirectly using molecular approaches or observed directly by ultrastructural analyses. Most of this evidence concerns shoot parasitic Cuscuta species and root parasitic Orobanchaceae, which can both infect a large range of phylogenetically distant hosts. The existence of an interspecific chimeric symplast is both striking and unique and, with exceptions being observed in closely related grafted plants, exist only in these parasitic relationships. Considering the recent technical advances and upcoming tools for analyzing parasitic plants, interspecific plasmodesmata in parasite/host connections are a promising system for studying secondary plasmodesmata. For open questions like how their formation is induced, how their positioning is controlled and if they are initiated by one or both bordering cells simultaneously, the parasite/host interface with two adjacent distinguishable genetic systems provides valuable advantages. We summarize here what is known about interspecific plasmodesmata between parasitic plants and their hosts and discuss the potential of the intriguing parasite/host system for deepening our insight into plasmodesmatal structure, function, and development.
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Affiliation(s)
- Karsten Fischer
- Department of Arctic and Marine Biology, UiT The Arctic University of Norway, Tromsø, Norway
| | - Lena Anna-Maria Lachner
- Department of Arctic and Marine Biology, UiT The Arctic University of Norway, Tromsø, Norway
| | - Stian Olsen
- Department of Arctic and Marine Biology, UiT The Arctic University of Norway, Tromsø, Norway
| | - Maria Mulisch
- Central Microscopy at the Biology Center, Christian-Albrechts-University, Kiel, Germany
| | - Kirsten Krause
- Department of Arctic and Marine Biology, UiT The Arctic University of Norway, Tromsø, Norway
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18
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Habermehl L, Mross PM, Krause K, Immisch I, Chiru D, Zahnert F, Gorny I, Strzelczyk A, Rosenow F, Möller L, Menzler K, Knake S. Stiripentol in the treatment of adults with focal epilepsy- a retrospective analysis. Seizure 2021; 88:7-11. [PMID: 33774499 DOI: 10.1016/j.seizure.2021.03.019] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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: 01/06/2021] [Revised: 03/10/2021] [Accepted: 03/19/2021] [Indexed: 10/21/2022] Open
Abstract
OBJECTIVES The aim of the present study was to evaluate the safety and efficacy of the add-on treatment of stiripentol (STP) in adult patients with severely pharmacoresistant focal or multifocal epilepsy. METHODS Data on adult patients treated with STP from March 2007 to July 2020 and with at least one clinical follow-up (FU) were retrospectively reviewed. Data on tolerability, efficacy and concomitant medication were evaluated at baseline, 6 months (5.5 ± 1.6 months (mean ± SD)) and 12 months (13.1 ± 3.9 months (mean ± SD)). RESULTS Data of 22 patients (54.5% male, mean age 34.4 ± 17.79 years (mean ± SD), including mean duration of epilepsy 17.6 ± 25.5 years (mean ± SD), median seizure frequency 30 ± 20 (median ± MAD) per month, and 63.6% being severely intellectually disabled, with 3 to 18 previous anti-seizure-drugs (ASD), were collected. After 6 months, 72.7% of the patients were still taking STP, and 31% of the patients were responders, including 13% who were seizure-free. The 12-month retention rate was 54.4 %, the response rate was 36.4% and 13.6% of patients were seizure-free at the 12-month FU. Reasons for discontinuation were increased seizure frequency, hyperammonaemia and encephalopathy. CONCLUSION STP seems to be a useful option in the treatment of patients with severely pharmacoresistant epilepsy. Prospective trials are necessary to examine the efficacy of STP in adult patients with pharmacoresistant focal epilepsy.
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Affiliation(s)
- L Habermehl
- Department of Neurology, Epilepsy Centre Hessen, Philipps-University Marburg, Marburg, Germany
| | - P M Mross
- Department of Neurology, Epilepsy Centre Hessen, Philipps-University Marburg, Marburg, Germany
| | - K Krause
- Department of Neurology, Epilepsy Centre Hessen, Philipps-University Marburg, Marburg, Germany
| | - I Immisch
- Department of Neurology, Epilepsy Centre Hessen, Philipps-University Marburg, Marburg, Germany
| | - D Chiru
- Department of Acute Medicine, Schweizer Paraplegiker Zentrum, Notwill, Switzerland
| | - F Zahnert
- Department of Neurology, Epilepsy Centre Hessen, Philipps-University Marburg, Marburg, Germany
| | - I Gorny
- Department of Neurology, Epilepsy Centre Hessen, Philipps-University Marburg, Marburg, Germany
| | - A Strzelczyk
- Department of Neurology, Epilepsy Centre Frankfurt Rhine-Main, Goethe-University Frankfurt, Frankfurt am Main, Germany
| | - F Rosenow
- Department of Neurology, Epilepsy Centre Frankfurt Rhine-Main, Goethe-University Frankfurt, Frankfurt am Main, Germany
| | - L Möller
- Department of Neurology, Epilepsy Centre Hessen, Philipps-University Marburg, Marburg, Germany
| | - K Menzler
- Department of Neurology, Epilepsy Centre Hessen, Philipps-University Marburg, Marburg, Germany
| | - S Knake
- Department of Neurology, Epilepsy Centre Hessen, Philipps-University Marburg, Marburg, Germany.
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19
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Kim P, Lee J, Lee CH, Fahy K, Shrestha P, Krause K, Shafaque H, Bazylak A. Tailoring catalyst layer interface with titanium mesh porous transport layers. Electrochim Acta 2021. [DOI: 10.1016/j.electacta.2021.137879] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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20
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Menting T, Krause K, Benz-Tettey F, Boehringer R, Laufer D, Gruber B, Crump M, Schieferdecker R, Reuhl S, Kaeferstein A, Engelhart S, Streeck H, Marx B, Aldabbagh S, Eis-Hübinger A, Rockstroh JK, Schwarze-Zander C. Low-threshold SARS-CoV-2 testing facility for hospital staff: Prevention of COVID-19 outbreaks? Int J Hyg Environ Health 2020; 231:113653. [PMID: 33137564 PMCID: PMC7580697 DOI: 10.1016/j.ijheh.2020.113653] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Revised: 09/03/2020] [Accepted: 09/03/2020] [Indexed: 01/04/2023]
Abstract
BACKGROUND The ongoing global SARS-CoV-2 pandemic has caused over 4.7 million infections greatly challenging healthcare workers (HCW) and medical institutions worldwide. The SARS-CoV-2 pandemic has shown to significantly impact mental and physical health of HCW. Thus, implementation of testing facilities supporting HCW are urgently needed. METHODS A low-threshold SARS-CoV-2 testing facility was introduced at the University Hospital Bonn, Germany, in March 2020. Irrespective of clinical symptoms employees were offered a voluntary and free SARS-CoV-2 test. Furthermore, employees returning from SARS-CoV-2 risk regions and employees after risk contact with SARS-CoV-2 infected patients or employees were tested for SARS-CoV-2 infection. Pharyngeal swabs were taken and reverse transcription polymerase chain reaction for detection of SARS-CoV-2 was performed, test results being available within 24 h. Profession, symptoms and reason for SARS-CoV-2 testing of employees were recorded. RESULTS Between 9th March and April 30, 2020, a total of 1510 employees were tested for SARS-CoV-2 infection. 1185 employees took advantage of the low-threshold testing facility. One percent (n = 11) were tested positive for SARS-CoV-2 infection, 18% being asymptomatic, 36% showing mild and 36% moderate/severe symptoms (missing 10%). Furthermore, of 56 employees returning from SARS-CoV-2 risk regions, 18% (10/56) were tested SARS-CoV-2 positive. After risk contact tracking by the hospital hygiene 6 patient-to-employee transmissions were identified in 163 employees with contact to 55 SARS-CoV-2 positive patients. CONCLUSION In the absence of easily accessible public SARS-CoV-2 testing facilities low-threshold SARS-CoV-2 testing facilities in hospitals with rapid testing resources help to identify SARS-CoV-2 infected employees with absent or mild symptoms, thus stopping the spread of infection in vulnerable hospital environments. High levels of professional infection prevention training and implementation of specialized wards as well as a perfectly working hospital hygiene network identifying and tracking risk contacts are of great importance in a pandemic setting.
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Affiliation(s)
- T Menting
- Occupational Health Service, University Hospital Bonn, Germany
| | - K Krause
- Occupational Health Service, University Hospital Bonn, Germany
| | - F Benz-Tettey
- Occupational Health Service, University Hospital Bonn, Germany
| | - R Boehringer
- Occupational Health Service, University Hospital Bonn, Germany
| | - D Laufer
- Medical Controlling, University Hospital Bonn, Germany
| | - B Gruber
- Medical Controlling, University Hospital Bonn, Germany
| | - M Crump
- Occupational Health Service, University Hospital Bonn, Germany
| | | | - S Reuhl
- Occupational Health Service, University Hospital Bonn, Germany
| | - A Kaeferstein
- Occupational Health Service, University Hospital Bonn, Germany
| | - S Engelhart
- Institute for Hygiene and Public Health, University Hospital Bonn, Germany
| | - H Streeck
- Institute of Virology, University of Bonn, Germany
| | - B Marx
- Institute of Virology, University of Bonn, Germany
| | - S Aldabbagh
- Institute of Virology, University of Bonn, Germany
| | | | - J K Rockstroh
- Department of Infectious Diseases, Internal Medicine I, University Hospital Bonn, Germany; German Center of Infection Research (DZIF), Partner Site Bonn-Cologne, Germany
| | - C Schwarze-Zander
- Department of Infectious Diseases, Internal Medicine I, University Hospital Bonn, Germany; German Center of Infection Research (DZIF), Partner Site Bonn-Cologne, Germany.
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21
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Lubig S, Krause K, Erices-Leclercq M, Tenckhoff D, Rudlowski C. Prospektive monozentrische Kohorten-Studie zum Einsatz des Misoprostol Vaginal-Insert (Misodel®) zur Geburtseinleitung bei Terminüberschreitung: Finale Ergebnisse von 304 Schwangeren. Geburtshilfe Frauenheilkd 2020. [DOI: 10.1055/s-0040-1717163] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
Affiliation(s)
- S Lubig
- Evangelisches Krankenhaus, Frauenklinik
| | - K Krause
- Evangelisches Krankenhaus, Frauenklinik
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22
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Lachner LA, Galstyan LG, Krause K. A highly efficient protocol for transforming Cuscuta reflexa based on artificially induced infection sites. Plant Direct 2020; 4:e00254. [PMID: 32789286 PMCID: PMC7417715 DOI: 10.1002/pld3.254] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Accepted: 07/17/2020] [Indexed: 05/02/2023]
Abstract
The parasitic plant genus Cuscuta is notoriously difficult to transform and to propagate or regenerate in vitro. With it being a substantial threat to many agroecosystems, techniques allowing functional analysis of gene products involved in host interaction and infection mechanisms are, however, in high demand. We set out to explore whether Agrobacterium-mediated transformation of different plant parts can provide efficient alternatives to the currently scarce and inefficient protocols for transgene expression in Cuscuta. We used fluorescent protein genes on the T-DNA as markers for transformation efficiency and transformation stability. As a result, we present a novel highly efficient transformation protocol for Cuscuta reflexa cells that exploits the propensity of the infection organ to take up and express transgenes with the T-DNA. Both, Agrobacterium rhizogenes and Agrobacterium tumefaciens carrying binary transformation vectors with reporter fluorochromes yielded high numbers of transformation events. An overwhelming majority of transformed cells were observed in the cell layer below the adhesive disk's epidermis, suggesting that these cells are particularly susceptible to infection. Cotransformation of these cells happens frequently when Agrobacterium strains carrying different constructs are applied together. Explants containing transformed tissue expressed the fluorescent markers in in vitro culture for several weeks, offering a future possibility for development of transformed cells into callus. These results are discussed with respect to the future potential of this technique and with respect to the special characteristics of the infection organ that may explain its competence to take up the foreign DNA.
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Affiliation(s)
| | - Levon Galstyan Galstyan
- Department of Arctic and Marine BiologyUiT The Arctic University of NorwayTromsøNorway
- Present address:
Faculty of Food TechnologiesArmenian National Agrarian UniversityYerevanArmenia
| | - Kirsten Krause
- Department of Arctic and Marine BiologyUiT The Arctic University of NorwayTromsøNorway
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23
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Förste F, Mantouvalou I, Kanngießer B, Stosnach H, Lachner LAM, Fischer K, Krause K. Selective mineral transport barriers at Cuscuta-host infection sites. Physiol Plant 2020; 168:934-947. [PMID: 31605394 DOI: 10.1111/ppl.13035] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2019] [Revised: 09/27/2019] [Accepted: 10/08/2019] [Indexed: 05/16/2023]
Abstract
The uptake of inorganic nutrients by rootless parasitic plants, which depend on host connections for all nutrient supplies, is largely uncharted. Using X-ray fluorescence spectroscopy (XRF), we analyzed the element composition of macro- and micronutrients at infection sites of the parasitic angiosperm Cuscuta reflexa growing on hosts of the genus Pelargonium. Imaging methods combining XRF with 2-D or 3-D (confocal) microscopy show that most of the measured elements are present at similar concentrations in the parasite compared to the host. However, calcium and strontium levels drop pronouncedly at the host/parasite interface, and manganese appears to accumulate in the host tissue surrounding the interface. Chlorine is present in the haustorium at similar levels as in the host tissue but is decreased in the stem of the parasite. Thus, our observations indicate a restricted uptake of calcium, strontium, manganese and chlorine by the parasite. Xylem-mobile dyes, which can probe for xylem connectivity between host and parasite, provided evidence for an interspecies xylem flow, which in theory would be expected to carry all of the elements indiscriminately. We thus conclude that inorganic nutrient uptake by the parasite Cuscuta is regulated by specific selective barriers whose existence has evaded detection until now.
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Affiliation(s)
- Frank Förste
- Institute for Optics and Atomic Physics, Technical University of Berlin, Berlin, 10623, Germany
| | - Ioanna Mantouvalou
- Institute for Optics and Atomic Physics, Technical University of Berlin, Berlin, 10623, Germany
| | - Birgit Kanngießer
- Institute for Optics and Atomic Physics, Technical University of Berlin, Berlin, 10623, Germany
| | | | - Lena Anna-Maria Lachner
- Department of Arctic and Marine Biology, The Arctic University of Norway UiT, Tromsø, 9019, Norway
| | - Karsten Fischer
- Department of Arctic and Marine Biology, The Arctic University of Norway UiT, Tromsø, 9019, Norway
| | - Kirsten Krause
- Department of Arctic and Marine Biology, The Arctic University of Norway UiT, Tromsø, 9019, Norway
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24
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Teubner M, Lenzen B, Espenberger LB, Fuss J, Nickelsen J, Krause K, Ruwe H, Schmitz-Linneweber C. The Chloroplast Ribonucleoprotein CP33B Quantitatively Binds the psbA mRNA. Plants (Basel) 2020; 9:plants9030367. [PMID: 32192026 PMCID: PMC7154868 DOI: 10.3390/plants9030367] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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: 02/12/2020] [Revised: 03/09/2020] [Accepted: 03/11/2020] [Indexed: 01/25/2023]
Abstract
Chloroplast RNAs are stabilized and processed by a multitude of nuclear-encoded RNA-binding proteins, often in response to external stimuli like light and temperature. A particularly interesting RNA-based regulation occurs with the psbA mRNA, which shows light-dependent translation. Recently, the chloroplast ribonucleoprotein CP33B was identified as a ligand of the psbA mRNA. We here characterized the interaction of CP33B with chloroplast RNAs in greater detail using a combination of RIP-chip, quantitative dot-blot, and RNA-Bind-n-Seq experiments. We demonstrate that CP33B prefers psbA over all other chloroplast RNAs and associates with the vast majority of the psbA transcript pool. The RNA sequence target motif, determined in vitro, does not fully explain CP33B's preference for psbA, suggesting that there are other determinants of specificity in vivo.
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Affiliation(s)
- Marlene Teubner
- Institute of Biology, Department of Life Sciences, Humboldt University Berlin, 10115 Berlin, Germany; (M.T.); (B.L.); (L.B.E.); (H.R.)
| | - Benjamin Lenzen
- Institute of Biology, Department of Life Sciences, Humboldt University Berlin, 10115 Berlin, Germany; (M.T.); (B.L.); (L.B.E.); (H.R.)
| | - Lucas Bernal Espenberger
- Institute of Biology, Department of Life Sciences, Humboldt University Berlin, 10115 Berlin, Germany; (M.T.); (B.L.); (L.B.E.); (H.R.)
| | - Janina Fuss
- Department of Arctic and Marine Biology, UiT The Arctic University of Norway, Framstredet 39, 9019 Tromsø, Norway; (J.F.); (K.K.)
| | - Jörg Nickelsen
- Department Biologie I, Botanik, Ludwig-Maximilians-Universität, 82152 Planegg-Martinsried, Germany;
| | - Kirsten Krause
- Department of Arctic and Marine Biology, UiT The Arctic University of Norway, Framstredet 39, 9019 Tromsø, Norway; (J.F.); (K.K.)
| | - Hannes Ruwe
- Institute of Biology, Department of Life Sciences, Humboldt University Berlin, 10115 Berlin, Germany; (M.T.); (B.L.); (L.B.E.); (H.R.)
| | - Christian Schmitz-Linneweber
- Institute of Biology, Department of Life Sciences, Humboldt University Berlin, 10115 Berlin, Germany; (M.T.); (B.L.); (L.B.E.); (H.R.)
- Correspondence: ; Tel.: ++49-30-2093-49700
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25
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Galloway AF, Knox P, Krause K. Sticky mucilages and exudates of plants: putative microenvironmental design elements with biotechnological value. New Phytol 2020; 225:1461-1469. [PMID: 31454421 DOI: 10.1111/nph.16144] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2019] [Accepted: 08/19/2019] [Indexed: 05/16/2023]
Abstract
Plants produce a wide array of secretions both above and below ground. Known as mucilages or exudates, they are secreted by seeds, roots, leaves and stems and fulfil a variety of functions including adhesion, protection, nutrient acquisition and infection. Mucilages are generally polysaccharide-rich and often occur in the form of viscoelastic gels and in many cases have adhesive properties. In some cases, progress is being made in understanding the structure-function relationships of mucilages such as for the secretions that allow growing ivy to attach to substrates and the biosynthesis and secretion of the mucilage compounds of the Arabidopsis seed coat. Work is just beginning towards understanding root mucilage and the proposed adhesive polymers involved in the formation of rhizosheaths at root surfaces and for the secretions involved in host plant infection by parasitic plants. In this article, we summarise knowledge on plant exudates and mucilages within the concept of their functions in microenvironmental design, focusing in particular on their bioadhesive functions and the molecules responsible for them. We draw attention to areas of future knowledge need, including the microstructure of mucilages and their compositional and regulatory dynamics.
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Affiliation(s)
- Andrew F Galloway
- Department for Arctic and Marine Biology, Faculty for Biosciences, Fisheries and Economics, UiT The Arctic University of Norway, Breivika, Tromsø, 9037, Norway
| | - Paul Knox
- Centre for Plant Sciences, Faculty of Biological Sciences, University of Leeds, Leeds, LS2 9JT, UK
| | - Kirsten Krause
- Department for Arctic and Marine Biology, Faculty for Biosciences, Fisheries and Economics, UiT The Arctic University of Norway, Breivika, Tromsø, 9037, Norway
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26
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Olsen S, Krause K. A rapid preparation procedure for laser microdissection-mediated harvest of plant tissues for gene expression analysis. Plant Methods 2019; 15:88. [PMID: 31388345 PMCID: PMC6676614 DOI: 10.1186/s13007-019-0471-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2019] [Accepted: 07/26/2019] [Indexed: 05/31/2023]
Abstract
BACKGROUND Gene expression changes that govern essential biological processes can occur at the cell-specific level. To gain insight into such events, laser microdissection is applied to cut out specific cells or tissues from which RNA for gene expression analysis is isolated. However, the preparation of plant tissue sections for laser microdissection and subsequent RNA isolation usually involves fixation and embedding, processes that are often time-consuming and can lower the yield and quality of isolated RNA. RESULTS Infection sites of the parasitic plant Cuscuta reflexa growing on its compatible host plant Pelargonium zonale were sectioned using a vibratome and dried on glass slides at 4 °C before laser microdissection. High quality RNA (RQI > 7) was isolated from 1 mm2, 3 mm2 and 6 mm2 total surface areas of laser microdissection-harvested C. reflexa tissue, with the yield of RNA correlating to the amount of collected material (on average 7 ng total RNA/mm2). The expression levels of two parasite genes previously found to be highly expressed during host plant infection were shown to differ individually between specific regions of the infection site. By drying plant sections under low pressure to reduce the dehydration time, the induced expression of two wound-related genes during preparation was avoided. CONCLUSIONS Plants can be prepared quickly and easily for laser microdissection by direct sectioning of fresh tissue followed by dehydration on glass slides. We show that RNA isolated from material treated in this manner maintains high quality and enables the investigation of differential gene expression at a high morphological resolution.
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Affiliation(s)
- Stian Olsen
- Department of Arctic and Marine Biology, Faculty of Biosciences, Fisheries and Economics, UiT The Arctic University of Norway, Framstredet 39, 9019 Tromsø, Norway
| | - Kirsten Krause
- Department of Arctic and Marine Biology, Faculty of Biosciences, Fisheries and Economics, UiT The Arctic University of Norway, Framstredet 39, 9019 Tromsø, Norway
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27
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Schwacke R, Ponce-Soto GY, Krause K, Bolger AM, Arsova B, Hallab A, Gruden K, Stitt M, Bolger ME, Usadel B. MapMan4: A Refined Protein Classification and Annotation Framework Applicable to Multi-Omics Data Analysis. Mol Plant 2019; 12:879-892. [PMID: 30639314 DOI: 10.1016/j.molp.2019.01.003] [Citation(s) in RCA: 239] [Impact Index Per Article: 47.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2018] [Revised: 12/14/2018] [Accepted: 01/01/2019] [Indexed: 05/18/2023]
Abstract
Genome sequences from over 200 plant species have already been published, with this number expected to increase rapidly due to advances in sequencing technologies. Once a new genome has been assembled and the genes identified, the functional annotation of their putative translational products, proteins, using ontologies is of key importance as it places the sequencing data in a biological context. Furthermore, to keep pace with rapid production of genome sequences, this functional annotation process must be fully automated. Here we present a redesigned and significantly enhanced MapMan4 framework, together with a revised version of the associated online Mercator annotation tool. Compared with the original MapMan, the new ontology has been expanded almost threefold and enforces stricter assignment rules. This framework was then incorporated into Mercator4, which has been upgraded to reflect current knowledge across the land plant group, providing protein annotations for all embryophytes with a comparably high quality. The annotation process has been optimized to allow a plant genome to be annotated in a matter of minutes. The output results continue to be compatible with the established MapMan desktop application.
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Affiliation(s)
- Rainer Schwacke
- Institute for Bio- and Geosciences (IBG-2: Plant Sciences), Forschungszentrum Jülich, Wilhelm Johnen Straße, Jülich, Germany
| | - Gabriel Y Ponce-Soto
- Institute for Bio- and Geosciences (IBG-2: Plant Sciences), Forschungszentrum Jülich, Wilhelm Johnen Straße, Jülich, Germany
| | - Kirsten Krause
- Department of Arctic and Marine Biology, The Arctic University of Norway, Biology Building, 9037 Tromsø, Norway
| | - Anthony M Bolger
- Institute for Botany and Molecular Genetics, BioEconomy Science Center, Worringer Weg, RWTH Aachen University, 52074 Aachen, Germany
| | - Borjana Arsova
- Institute for Bio- and Geosciences (IBG-2: Plant Sciences), Forschungszentrum Jülich, Wilhelm Johnen Straße, Jülich, Germany
| | - Asis Hallab
- Institute for Bio- and Geosciences (IBG-2: Plant Sciences), Forschungszentrum Jülich, Wilhelm Johnen Straße, Jülich, Germany
| | - Kristina Gruden
- National Institute of Biology, Department of Biotechnology and Systems Biology, Večna Pot 111, 1000 Ljubljana, Slovenia
| | - Mark Stitt
- Max Planck Institute for Molecular Plant Physiology, Department of Systems Regulation, 14476 Potsdam-Golm, Germany
| | - Marie E Bolger
- Institute for Bio- and Geosciences (IBG-2: Plant Sciences), Forschungszentrum Jülich, Wilhelm Johnen Straße, Jülich, Germany.
| | - Björn Usadel
- Institute for Bio- and Geosciences (IBG-2: Plant Sciences), Forschungszentrum Jülich, Wilhelm Johnen Straße, Jülich, Germany; Institute for Botany and Molecular Genetics, BioEconomy Science Center, Worringer Weg, RWTH Aachen University, 52074 Aachen, Germany
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Krause K, Sabat R, Witte‐Händel E, Schulze A, Puhl V, Maurer M, Wolk K. Schnitzler 综合征与 CCL2. Br J Dermatol 2019. [DOI: 10.1111/bjd.17670] [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: 11/30/2022]
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Krause K, Sabat R, Witte‐Händel E, Schulze A, Puhl V, Maurer M, Wolk K. CCL2 in Schnitzler syndrome. Br J Dermatol 2019. [DOI: 10.1111/bjd.17654] [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: 11/28/2022]
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Krause K, Sabat R, Witte-Händel E, Schulze A, Puhl V, Maurer M, Wolk K. Association of CCL2 with systemic inflammation in Schnitzler syndrome. Br J Dermatol 2018; 180:859-868. [PMID: 30339714 DOI: 10.1111/bjd.17334] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/14/2018] [Indexed: 12/22/2022]
Abstract
BACKGROUND Schnitzler syndrome (SchS) is a rare autoinflammatory disease characterized by urticarial exanthema, bone and joint alterations, fever and monoclonal gammopathy, which manifest mostly in the second half of life. It involves overactivation of the interleukin (IL)-1 system, but the exact pathophysiological pathways remain largely unknown. OBJECTIVES To identify and characterize the pathogenetic players in SchS. METHODS Blood parameters were quantified in patients with SchS compared with healthy controls and patients with psoriasis and hidradenitis suppurativa using enzyme-linked immunosorbent assay (ELISA). CCL2 expression in cultured primary cells was analysed by quantitative reverse-transcriptase polymerase chain reaction and ELISA. RESULTS CCL2, a chemoattractant for monocytic and further mononuclear immune cells, was found to be significantly elevated in patients with SchS. CCL2 levels showed a positive association with global disease activity, especially with bone pain, but not disease duration, gammopathy, neutrophilia or skin disease. In vitro stimulation assays demonstrated a strong CCL2 production capacity of mononuclear immune cells and fibroblasts, but not epithelial or endothelial cells. Among a range of inflammatory mediators, only IL-1β (immune cells, fibroblasts) and tumour necrosis factor (TNF)-α (fibroblasts) were important CCL2 inducers. TNF-α, but not IL-17, strengthened the CCL2-inducing effect of IL-1β in fibroblasts. Accordingly, CCL2 levels positively correlated with both TNF-α and IL-1β serum levels in patients with SchS. Therapeutic IL-1β blockade decreased CCL2 blood levels in these patients as early as 1 week after the initiation of treatment. CONCLUSIONS CCL2 may be an important component of the pathogenetic cascade leading to bone alterations, and a suitable marker of disease activity in patients with SchS.
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Affiliation(s)
- K Krause
- Dermatological Allergology, Department of Dermatology and Allergy, Charité - Universitätsmedizin Berlin, Charitéplatz 1, 10117, Berlin, Germany.,Autoinflammation Reference Centre Charité, Charité - Universitätsmedizin Berlin, Charitéplatz 1, 10117, Berlin, Germany
| | - R Sabat
- Interdisciplinary Group of Molecular Immunopathology, Dermatology/Medical Immunology and, Charité - Universitätsmedizin Berlin, Charitéplatz 1, 10117, Berlin, Germany.,Psoriasis Research and Treatment Centre, Charité - Universitätsmedizin Berlin, Charitéplatz 1, 10117, Berlin, Germany
| | - E Witte-Händel
- Interdisciplinary Group of Molecular Immunopathology, Dermatology/Medical Immunology and, Charité - Universitätsmedizin Berlin, Charitéplatz 1, 10117, Berlin, Germany.,Psoriasis Research and Treatment Centre, Charité - Universitätsmedizin Berlin, Charitéplatz 1, 10117, Berlin, Germany
| | - A Schulze
- Interdisciplinary Group of Molecular Immunopathology, Dermatology/Medical Immunology and, Charité - Universitätsmedizin Berlin, Charitéplatz 1, 10117, Berlin, Germany.,Psoriasis Research and Treatment Centre, Charité - Universitätsmedizin Berlin, Charitéplatz 1, 10117, Berlin, Germany
| | - V Puhl
- Dermatological Allergology, Department of Dermatology and Allergy, Charité - Universitätsmedizin Berlin, Charitéplatz 1, 10117, Berlin, Germany.,Autoinflammation Reference Centre Charité, Charité - Universitätsmedizin Berlin, Charitéplatz 1, 10117, Berlin, Germany
| | - M Maurer
- Dermatological Allergology, Department of Dermatology and Allergy, Charité - Universitätsmedizin Berlin, Charitéplatz 1, 10117, Berlin, Germany.,Autoinflammation Reference Centre Charité, Charité - Universitätsmedizin Berlin, Charitéplatz 1, 10117, Berlin, Germany
| | - K Wolk
- Interdisciplinary Group of Molecular Immunopathology, Dermatology/Medical Immunology and, Charité - Universitätsmedizin Berlin, Charitéplatz 1, 10117, Berlin, Germany.,Psoriasis Research and Treatment Centre, Charité - Universitätsmedizin Berlin, Charitéplatz 1, 10117, Berlin, Germany.,Berlin-Brandenburg Centre for Regenerative Therapies, Charité - Universitätsmedizin Berlin, Augustenburger Platz 1, 13353, Berlin, Germany
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Kessler AF, Krause K, Al-Shameri B, Weiland J, Linsenmann T, Ernestus R, Hagemann C, Löhr M, Jentschke E. OS4.3 The BReMen trial: Patients with benign meningioma - is rehabilitation really necessary? Neuro Oncol 2018. [DOI: 10.1093/neuonc/noy139.028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- A F Kessler
- University of Würzburg, Department of Neurosurgery, Laboratory of Tumorbiology, Würzburg, Germany
| | - K Krause
- University of Würzburg, Department of Neurosurgery, Neuropsychology, Würzburg, Germany
| | - B Al-Shameri
- University of Würzburg, Department of Neurosurgery, Laboratory of Tumorbiology, Würzburg, Germany
| | - J Weiland
- University of Würzburg, Department of Neurosurgery, Laboratory of Tumorbiology, Würzburg, Germany
| | - T Linsenmann
- University of Würzburg, Department of Neurosurgery, Laboratory of Tumorbiology, Würzburg, Germany
| | - R Ernestus
- University of Würzburg, Department of Neurosurgery, Laboratory of Tumorbiology, Würzburg, Germany
| | - C Hagemann
- University of Würzburg, Department of Neurosurgery, Laboratory of Tumorbiology, Würzburg, Germany
| | - M Löhr
- University of Würzburg, Department of Neurosurgery, Laboratory of Tumorbiology, Würzburg, Germany
| | - E Jentschke
- University of Würzburg, Department of Neurosurgery, Neuropsychology, Würzburg, Germany
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Hamann T, Kärkönen A, Krause K. From plant cell wall metabolism and plasticity to cell wall biotechnology. Physiol Plant 2018; 164:2-4. [PMID: 29956336 DOI: 10.1111/ppl.12794] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2018] [Accepted: 06/26/2018] [Indexed: 06/08/2023]
Affiliation(s)
- Thorsten Hamann
- Department of Biology, Høgskoleringen 5, Realfagbygget, Norwegian University of Science and Technology, 7491, Trondheim, Norway
| | - Anna Kärkönen
- Natural Resources Institute Finland (Luke), Production Systems, Plant Genetics, 00790, Helsinki, Finland
- Department of Agricultural Sciences, Viikki Plant Science Centre, University of Helsinki, 00014, Helsinki, Finland
| | - Kirsten Krause
- Department of Arctic and Marine Biology, Faculty of Biosciences, Fisheries and Economics, UiT The Arctic University of Norway, 9037, Tromsø, Norway
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Gürtler D, Krause K, Möhring A, Bischof G, John U, Meyer C. Activating primary medical care patients for a depression-preventive lifestyle with individualized e-health interventions (ActiLife). Das Gesundheitswesen 2018. [DOI: 10.1055/s-0038-1667635] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- D Gürtler
- Universitätsmedizin Greifswald, Institut für Sozialmedizin und Prävention, Greifswald, Deutschland
- DZHK (Deutsches Zentrum für Herz-Kreislauf-Forschung), Standort Greifswald, Greifswald, Deutschland
| | - K Krause
- Universitätsmedizin Greifswald, Institut für Sozialmedizin und Prävention, Greifswald, Deutschland
| | - A Möhring
- Universitätsmedizin Greifswald, Institut für Sozialmedizin und Prävention, Greifswald, Deutschland
- DZHK (Deutsches Zentrum für Herz-Kreislauf-Forschung), Standort Greifswald, Greifswald, Deutschland
| | - G Bischof
- Universität zu Lübeck, Klinik für Psychiatrie und Psychotherapie, Lübeck, Deutschland
| | - U John
- Universitätsmedizin Greifswald, Institut für Sozialmedizin und Prävention, Greifswald, Deutschland
- DZHK (Deutsches Zentrum für Herz-Kreislauf-Forschung), Standort Greifswald, Greifswald, Deutschland
| | - C Meyer
- Universitätsmedizin Greifswald, Institut für Sozialmedizin und Prävention, Greifswald, Deutschland
- DZHK (Deutsches Zentrum für Herz-Kreislauf-Forschung), Standort Greifswald, Greifswald, Deutschland
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Gürtler D, Möhring A, Krause K, Rumpf HJ, John U, Meyer C. Proactive health risk screening for multiple motivational interventions in primary care patients: Methods, design and reach. Das Gesundheitswesen 2018. [DOI: 10.1055/s-0038-1667701] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- D Gürtler
- Universitätsmedizin Greifswald, Institut für Sozialmedizin und Prävention, Greifswald, Deutschland
- DZHK (Deutsches Zentrum für Herz-Kreislauf-Forschung), Standort Greifswald, Greifswald, Deutschland
| | - A Möhring
- Universitätsmedizin Greifswald, Institut für Sozialmedizin und Prävention, Greifswald, Deutschland
- DZHK (Deutsches Zentrum für Herz-Kreislauf-Forschung), Standort Greifswald, Greifswald, Deutschland
| | - K Krause
- Universitätsmedizin Greifswald, Institut für Sozialmedizin und Prävention, Greifswald, Deutschland
| | - HJ Rumpf
- Universität zu Lübeck, Klinik für Psychiatrie und Psychotherapie, Lübeck, Deutschland
| | - U John
- Universitätsmedizin Greifswald, Institut für Sozialmedizin und Prävention, Greifswald, Deutschland
- DZHK (Deutsches Zentrum für Herz-Kreislauf-Forschung), Standort Greifswald, Greifswald, Deutschland
| | - C Meyer
- Universitätsmedizin Greifswald, Institut für Sozialmedizin und Prävention, Greifswald, Deutschland
- DZHK (Deutsches Zentrum für Herz-Kreislauf-Forschung), Standort Greifswald, Greifswald, Deutschland
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35
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Krause K, Gürtler D, Möhring A, Bischof G, John U, Meyer C. Proaktive computergestützte Depressionsprävention in der primärmedizinischen Versorgung: Wer wird erreicht? Das Gesundheitswesen 2018. [DOI: 10.1055/s-0038-1667784] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- K Krause
- Universitätsmedizin Greifswald, Institut für Sozialmedizin und Prävention, Greifswald, Deutschland
| | - D Gürtler
- Universitätsmedizin Greifswald, Institut für Sozialmedizin und Prävention, Greifswald, Deutschland
- DZHK (Deutsches Zentrum für Herz-Kreislauf-Forschung), Standort Greifswald, Greifswald, Deutschland
| | - A Möhring
- Universitätsmedizin Greifswald, Institut für Sozialmedizin und Prävention, Greifswald, Deutschland
- DZHK (Deutsches Zentrum für Herz-Kreislauf-Forschung), Standort Greifswald, Greifswald, Deutschland
| | - G Bischof
- Universität zu Lübeck, Klinik für Psychiatrie und Psychotherapie, Lübeck, Deutschland
| | - U John
- Universitätsmedizin Greifswald, Institut für Sozialmedizin und Prävention, Greifswald, Deutschland
- DZHK (Deutsches Zentrum für Herz-Kreislauf-Forschung), Standort Greifswald, Greifswald, Deutschland
| | - C Meyer
- Universitätsmedizin Greifswald, Institut für Sozialmedizin und Prävention, Greifswald, Deutschland
- DZHK (Deutsches Zentrum für Herz-Kreislauf-Forschung), Standort Greifswald, Greifswald, Deutschland
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Vogel A, Schwacke R, Denton AK, Usadel B, Hollmann J, Fischer K, Bolger A, Schmidt MHW, Bolger ME, Gundlach H, Mayer KFX, Weiss-Schneeweiss H, Temsch EM, Krause K. Footprints of parasitism in the genome of the parasitic flowering plant Cuscuta campestris. Nat Commun 2018; 9:2515. [PMID: 29955043 PMCID: PMC6023873 DOI: 10.1038/s41467-018-04344-z] [Citation(s) in RCA: 103] [Impact Index Per Article: 17.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2017] [Accepted: 04/23/2018] [Indexed: 11/09/2022] Open
Abstract
A parasitic lifestyle, where plants procure some or all of their nutrients from other living plants, has evolved independently in many dicotyledonous plant families and is a major threat for agriculture globally. Nevertheless, no genome sequence of a parasitic plant has been reported to date. Here we describe the genome sequence of the parasitic field dodder, Cuscuta campestris. The genome contains signatures of a fairly recent whole-genome duplication and lacks genes for pathways superfluous to a parasitic lifestyle. Specifically, genes needed for high photosynthetic activity are lost, explaining the low photosynthesis rates displayed by the parasite. Moreover, several genes involved in nutrient uptake processes from the soil are lost. On the other hand, evidence for horizontal gene transfer by way of genomic DNA integration from the parasite's hosts is found. We conclude that the parasitic lifestyle has left characteristic footprints in the C. campestris genome.
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Affiliation(s)
- Alexander Vogel
- Institute for Botany and Molecular Genetics, BioEconomy Science Center, Worringer Weg 3, RWTH Aachen University, Aachen, 52074, Germany
| | - Rainer Schwacke
- Institute for Bio- and Geosciences (IBG-2: Plant Sciences), Forschungszentrum Jülich, Wilhelm Johnen Straße, Jülich, 52428, Germany
| | - Alisandra K Denton
- Institute for Botany and Molecular Genetics, BioEconomy Science Center, Worringer Weg 3, RWTH Aachen University, Aachen, 52074, Germany.,Institute of Plant Biochemistry, Heinrich Heine University Düsseldorf, Universitätsstraße 1, Düsseldorf, 40225, Germany
| | - Björn Usadel
- Institute for Botany and Molecular Genetics, BioEconomy Science Center, Worringer Weg 3, RWTH Aachen University, Aachen, 52074, Germany.,Institute for Bio- and Geosciences (IBG-2: Plant Sciences), Forschungszentrum Jülich, Wilhelm Johnen Straße, Jülich, 52428, Germany
| | - Julien Hollmann
- Department of Arctic and Marine Biology, UiT The Arctic University of Norway, Biologibygget, Framstredet 39, Tromsø, 9037, Norway
| | - Karsten Fischer
- Department of Arctic and Marine Biology, UiT The Arctic University of Norway, Biologibygget, Framstredet 39, Tromsø, 9037, Norway
| | - Anthony Bolger
- Institute for Botany and Molecular Genetics, BioEconomy Science Center, Worringer Weg 3, RWTH Aachen University, Aachen, 52074, Germany
| | - Maximilian H-W Schmidt
- Institute for Botany and Molecular Genetics, BioEconomy Science Center, Worringer Weg 3, RWTH Aachen University, Aachen, 52074, Germany
| | - Marie E Bolger
- Institute for Bio- and Geosciences (IBG-2: Plant Sciences), Forschungszentrum Jülich, Wilhelm Johnen Straße, Jülich, 52428, Germany
| | - Heidrun Gundlach
- Helmholtz Zentrum München (HMGU), Plant Genome and Systems Biology (PGSB), Ingolstädter Landstraße 1, Neuherberg, 85764, Germany
| | - Klaus F X Mayer
- Helmholtz Zentrum München (HMGU), Plant Genome and Systems Biology (PGSB), Ingolstädter Landstraße 1, Neuherberg, 85764, Germany.,Technical University Munich, School of Life Sciences Weihenstephan, Alte Akademie 8, Freising, 85354, Germany
| | - Hanna Weiss-Schneeweiss
- Department of Botany and Biodiversity Research, Faculty Center Biodiversity, University of Vienna, Rennweg 14, Vienna, 1030, Austria
| | - Eva M Temsch
- Department of Botany and Biodiversity Research, Faculty Center Biodiversity, University of Vienna, Rennweg 14, Vienna, 1030, Austria
| | - Kirsten Krause
- Department of Arctic and Marine Biology, UiT The Arctic University of Norway, Biologibygget, Framstredet 39, Tromsø, 9037, Norway.
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Liu F, Krause K, Amer A, Hall-Stoodley L, Reilly J, Nichols A. EPS1.05 CAT-5571 restores autophagy, a fundamental defect in cystic fibrosis, and is a potential new treatment for people with cystic fibrosis. J Cyst Fibros 2018. [DOI: 10.1016/s1569-1993(18)30236-4] [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: 12/01/2022]
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Keszthelyi D, Aziz Q, Ruffle JK, O'Daly O, Sanders D, Krause K, Williams SCR, Howard MA. Delineation between different components of chronic pain using dimension reduction - an ASL fMRI study in hand osteoarthritis. Eur J Pain 2018. [PMID: 29520913 PMCID: PMC6055802 DOI: 10.1002/ejp.1212] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [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: 11/29/2022]
Abstract
Background Traditional psychometric measures aimed at characterizing the pain experience often show considerable overlap, due to interlinked affective and modulatory processes under central nervous system control. Neuroimaging studies have been employed to investigate this complexity of pain processing, in an attempt to provide a quantifiable, adjunctive description of pain perception. In this exploratory study, we examine psychometric and neuroimaging data from 38 patients with painful osteoarthritis of the carpometacarpal joint. We had two aims: first, to utilize principal component analysis (PCA) as a dimension reduction strategy across multiple self‐reported endpoints of pain, cognitive and affective functioning; second, to investigate the relationship between identified dimensions and regional cerebral blood flow (rCBF) as an indirect measure of brain activity underpinning their ongoing pain experiences. Methods Psychometric data were collected using validated questionnaires. Quantitative estimates of rCBF were acquired using pseudo‐continuous arterial spin‐labelled functional magnetic resonance imaging. Results Two principal components were identified that accounted for 73% of data variance; one related to pain scores and a second to psychological traits. Voxel‐wise multiple regression analysis revealed a significant negative association between the ‘pain score’ component and rCBF to a right temporal lobe cluster, including the amygdala and the parahippocampal cortex. Conclusion We suggest this association may represent a coping mechanism that aims to reduce fear‐related pain‐anxiety. Further investigation of central brain processing mechanisms in osteoarthritis‐related pain may offer insights into more effective therapeutic strategies. Significance This study demonstrates that dimension reduction using PCA allows insight into pain perception and its affective components in relation to brain activation patterns in patients with painful hand osteoarthritis.
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Affiliation(s)
- D Keszthelyi
- Division of Gastroenterology, Department of Internal Medicine, Maastricht University Medical Center, Maastricht, the Netherlands.,Centre for Neuroscience and Trauma, Blizard Institute, Wingate Institute of Neurogastroenterology, Barts and the London School of Medicine and Dentistry, Queen Mary University of London, UK.,Department of Neuroimaging, Institute of Psychiatry, Psychology & Neuroscience at King's College London, UK
| | - Q Aziz
- Centre for Neuroscience and Trauma, Blizard Institute, Wingate Institute of Neurogastroenterology, Barts and the London School of Medicine and Dentistry, Queen Mary University of London, UK
| | - J K Ruffle
- Centre for Neuroscience and Trauma, Blizard Institute, Wingate Institute of Neurogastroenterology, Barts and the London School of Medicine and Dentistry, Queen Mary University of London, UK.,Department of Neuroimaging, Institute of Psychiatry, Psychology & Neuroscience at King's College London, UK
| | - O O'Daly
- Department of Neuroimaging, Institute of Psychiatry, Psychology & Neuroscience at King's College London, UK
| | - D Sanders
- Department of Neuroimaging, Institute of Psychiatry, Psychology & Neuroscience at King's College London, UK.,Pain Management Research Institute, The University of Sydney at Royal North Shore Hospital, St Leonards, NSW, Australia
| | - K Krause
- Department of Neuroimaging, Institute of Psychiatry, Psychology & Neuroscience at King's College London, UK.,Department of Neurology, Philipps-University Marburg, Marburg, Germany
| | - S C R Williams
- Department of Neuroimaging, Institute of Psychiatry, Psychology & Neuroscience at King's College London, UK
| | - M A Howard
- Department of Neuroimaging, Institute of Psychiatry, Psychology & Neuroscience at King's College London, UK
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Krause K, Johnsen HR, Pielach A, Lund L, Fischer K, Rose JKC. Identification of tomato introgression lines with enhanced susceptibility or resistance to infection by parasitic giant dodder (Cuscuta reflexa). Physiol Plant 2018; 162:205-218. [PMID: 29080211 DOI: 10.1111/ppl.12660] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2017] [Revised: 09/27/2017] [Accepted: 10/25/2017] [Indexed: 05/02/2023]
Abstract
The parasitic flowering plant genus Cuscuta (dodder) is a parasitic weed that infects many important crops. Once it winds around the shoots of potential host plants and initiates the development of penetration organs, called haustoria, only a few plant species have been shown to deploy effective defense mechanisms to ward off Cuscuta parasitization. However, a notable exception is Solanum lycopersicum (tomato), which exhibits a local hypersensitive reaction when attacked by giant dodder (Cuscuta reflexa). Interestingly, the closely related wild desert tomato, Solanum pennellii, is unable to stop the penetration of its tissue by the C. reflexa haustoria. In this study, we observed that grafting a S. pennellii scion onto the rootstock of the resistant S. lycopersicum did not change the susceptibility phenotype of S. pennellii. This suggests that hormones, or other mobile substances, produced by S. lycopersicum do not induce a defense reaction in the susceptible tissue. Screening of a population of introgression lines harboring chromosome fragments from S. pennellii in the genome of the recurrent parent S. lycopersicum, revealed that most lines exhibit the same defense reaction as shown by the S. lycopersicum parental line. However, several lines showed different responses and exhibited either susceptibility, or cell death that extended considerably beyond the infection site. These lines will be valuable for the future identification of key loci involved in the perception of, and resistance to, C. reflexa and for developing strategies to enhance resistance to infection in crop species.
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Affiliation(s)
- Kirsten Krause
- Department of Arctic and Marine Biology, University of Tromsø, N-9037, Tromsø, Norway
| | - Hanne R Johnsen
- Department of Arctic and Marine Biology, University of Tromsø, N-9037, Tromsø, Norway
| | - Anna Pielach
- Department of Arctic and Marine Biology, University of Tromsø, N-9037, Tromsø, Norway
| | - Leidulf Lund
- Department of Arctic and Marine Biology, University of Tromsø, N-9037, Tromsø, Norway
| | - Karsten Fischer
- Department of Arctic and Marine Biology, University of Tromsø, N-9037, Tromsø, Norway
| | - Jocelyn K C Rose
- Plant Biology Section, School of Integrative Plant Science, Cornell University, Ithaca, NY, 14853, USA
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Bonnekoh H, Scheffel J, Maurer M, Krause K. Use of skin biomarker profiles to distinguish Schnitzler syndrome from chronic spontaneous urticaria: results of a pilot study. Br J Dermatol 2017; 178:561-562. [DOI: 10.1111/bjd.15705] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- H. Bonnekoh
- Department of Dermatology and Allergy, Allergie-Centrum-Charité; Charité - Universitätsmedizin Berlin; Berlin Germany
- Autoinflammation Reference Center Charité (ARC ); Charité - Universitätsmedizin Berlin; Berlin Germany
| | - J. Scheffel
- Department of Dermatology and Allergy, Allergie-Centrum-Charité; Charité - Universitätsmedizin Berlin; Berlin Germany
- Autoinflammation Reference Center Charité (ARC ); Charité - Universitätsmedizin Berlin; Berlin Germany
| | - M. Maurer
- Department of Dermatology and Allergy, Allergie-Centrum-Charité; Charité - Universitätsmedizin Berlin; Berlin Germany
- Autoinflammation Reference Center Charité (ARC ); Charité - Universitätsmedizin Berlin; Berlin Germany
| | - K. Krause
- Department of Dermatology and Allergy, Allergie-Centrum-Charité; Charité - Universitätsmedizin Berlin; Berlin Germany
- Autoinflammation Reference Center Charité (ARC ); Charité - Universitätsmedizin Berlin; Berlin Germany
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Terhorst D, Koti I, Krause K, Metz M, Maurer M. In chronic spontaneous urticaria, high numbers of dermal endothelial cells, but not mast cells, are linked to recurrent angio-oedema. Clin Exp Dermatol 2017; 43:131-136. [PMID: 29064119 DOI: 10.1111/ced.13254] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/23/2017] [Indexed: 12/27/2022]
Abstract
BACKGROUND Chronic spontaneous urticaria (CSU) is an inflammatory skin disorder characterized by recurrent weals, angio-oedema or both. Recent studies have shown that the number of endothelial cells is increased in the skin of patients with CSU, but the underlying mechanisms and clinical implications of this are unclear. AIM To evaluate whether mast cell (MC) or endothelial cell (EC) numbers correlate with CSU and whether they are relevant for disease duration, disease activity or the presence of clinical features. METHODS We determined the numbers of CD31+ ECs and MCs in nonlesional skin of 30 patients with CSU using quantitative histomorphometry, and assessed their correlation with each other and with clinical features such as disease duration, disease activity and occurrence of angio-oedema. RESULTS The numbers of MCs and ECs were high in the nonlesional skin of patients with CSU, but did not correlate with each other. Neither MC number nor EC number correlated with disease duration or disease activity. Interestingly, patients with high numbers of cutaneous CD31+ ECs had higher rates of recurrent angio-oedema and vice versa. CONCLUSIONS Based on these findings, we speculate that vascular remodelling and MC hyperplasia in patients with CSU occurs independently and via different mechanisms. Targeting of the mechanisms that drive neoangiogenesis in CSU may result in novel therapeutic strategies for the management of patients with angio-oedema.
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Affiliation(s)
- D Terhorst
- Allergie-Centrum-Charité, Department of Dermatology and Allergy, Charité-Universitätsmedizin Berlin, Berlin, Germany.,Berlin Institute of Health (BIH), Berlin, Germany
| | - I Koti
- Allergie-Centrum-Charité, Department of Dermatology and Allergy, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - K Krause
- Allergie-Centrum-Charité, Department of Dermatology and Allergy, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - M Metz
- Allergie-Centrum-Charité, Department of Dermatology and Allergy, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - M Maurer
- Allergie-Centrum-Charité, Department of Dermatology and Allergy, Charité-Universitätsmedizin Berlin, Berlin, Germany
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Bonnekoh H, Ohanyan T, Lenze D, Krause K, Maurer M, Zuberbier T, Siebenhaar F. Development of tripe palms and soles in a patient with long pre-existing systemic mastocytosis and newly developed non-small cell lung cancer. J Eur Acad Dermatol Venereol 2017; 32:e151-e153. [PMID: 29055165 DOI: 10.1111/jdv.14648] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- H Bonnekoh
- Department of Dermatology and Allergy, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - T Ohanyan
- Department of Dermatology and Allergy, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - D Lenze
- Department of Pathology, Laboratory of Molecular Pathology, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - K Krause
- Department of Dermatology and Allergy, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - M Maurer
- Department of Dermatology and Allergy, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - T Zuberbier
- Department of Dermatology and Allergy, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - F Siebenhaar
- Department of Dermatology and Allergy, Charité - Universitätsmedizin Berlin, Berlin, Germany
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Kuemmerle-Deschner JB, Verma D, Endres T, Broderick L, de Jesus AA, Hofer F, Blank N, Krause K, Rietschel C, Horneff G, Aksentijevich I, Lohse P, Goldbach-Mansky R, Hoffman HM, Benseler SM. Clinical and Molecular Phenotypes of Low-Penetrance Variants of NLRP3: Diagnostic and Therapeutic Challenges. Arthritis Rheumatol 2017; 69:2233-2240. [PMID: 28692792 DOI: 10.1002/art.40208] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2016] [Accepted: 07/06/2017] [Indexed: 01/15/2023]
Abstract
OBJECTIVE Cryopyrin-associated periodic syndromes (CAPS) result from gain-of-function mutations in the NLRP3 gene, which causes excessive release of interleukin-1β (IL-1β) and systemic inflammation. While pathogenetic NLRP3 variant phenotypes are well-characterized, low-penetrance NLRP3 variants represent a significant clinical challenge. The aims of this study were to determine the clinical phenotype, the in vitro biologic phenotype, and the effect of anti-IL-1 treatment in patients with low-penetrance NLRP3 variants. METHODS A multicenter study of consecutive symptomatic patients with low-penetrance NLRP3 variants recruited from 7 centers between May 2012 and May 2013 was performed. The observed findings were transferred into a study database, from which they were extracted for analysis. Controls were patients with a known pathogenetic NLRP3 variant. Clinical presentation and CAPS markers of inflammation were captured. Functional assays of inflammasome activation, including caspase 1 activity, NF-κB release, cell death, and IL-1β release, were performed. Treatment effects of IL-1 were determined. Comparisons between low-penetrance and pathogenetic NLRP3 variants were performed. RESULTS The study included 45 patients, 21 of which were female (47%); 26 of the patients (58%) were children. NLRP3 low-penetrance variants identified in the patients were Q703K (n = 19), R488K (n = 6), and V198M (n = 20). In the controls, 28 had pathogenetic NLRP3 variants. Patients with low-penetrance NLRP3 variants had significantly more fever (76%) and gastrointestinal symptoms (73%); eye disease, hearing loss, and renal involvement were less common. Functional inflammasome testing identified an intermediate phenotype in low-penetrance NLRP3 variants as compared to wild-type and pathogenetic NLRP3 variants. All treated patients responded to IL-1 inhibition, with complete response documented in 50% of patients. CONCLUSION Patients with low-penetrance NLRP3 variants display a distinct clinical phenotype and an intermediate biologic phenotype, including IL-1β and non-IL-1β-mediated inflammatory pathway activation.
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Affiliation(s)
| | - D Verma
- Rady Children's Hospital and University of California at San Diego, San Diego, California
| | - T Endres
- University Hospital Tuebingen, Tuebingen, Germany
| | - L Broderick
- Rady Children's Hospital and University of California at San Diego, San Diego, California
| | - A A de Jesus
- National Institute of Allergy and Infectious Diseases, NIH, Bethesda, Maryland
| | - F Hofer
- University Hospital Tuebingen, Tuebingen, Germany
| | - N Blank
- Universitaetsklinikum Heidelberg, Heidelberg, Germany
| | - K Krause
- Charité Medical University, Berlin, Germany
| | - C Rietschel
- Clementine-Kinderhospital, Frankfurt, Germany
| | - G Horneff
- Asklepios-Klinik Sankt Augustin, Sankt Augustin, Germany
| | - I Aksentijevich
- National Human Genome Research Institute, NIH, Bethesda, Maryland
| | - P Lohse
- Institute of Laboratory Medicine and Human Genetics, Singen, Germany
| | | | - H M Hoffman
- Rady Children's Hospital and University of California at San Diego, San Diego, California
| | - S M Benseler
- University Hospital Tuebingen, Tuebingen, Germany, and Alberta Children's Hospital, University of Calgary, Calgary, Alberta, Canada
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Krause K, Gürtler D, Bischof G, Batra A, John U, Meyer C. Computergestützte Beratung bei gesundheitsriskantem Alkoholkonsum und Depressivität: Ergebnisse einer multizentrischen Pilotstudie. Das Gesundheitswesen 2017. [DOI: 10.1055/s-0037-1605835] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- K Krause
- Universitätsmedizin Greifswald, Institut für Sozialmedizin und Prävention, Greifswald
| | - D Gürtler
- Universitätsmedizin Greifswald, Institut für Sozialmedizin und Prävention, Greifswald
- Deutsches Zentrum für Herz-Kreislauf-Forschung e.V., Greifswald
| | - G Bischof
- Universität zu Lübeck, Klinik für Psychiatrie und Psychotherapie, Lübeck
| | - A Batra
- Universität Tübingen, Klinik für Psychiatrie und Psychiatrie, Tübingen
| | - U John
- Universitätsmedizin Greifswald, Institut für Sozialmedizin und Prävention, Greifswald
- Deutsches Zentrum für Herz-Kreislauf-Forschung e.V., Greifswald
| | - C Meyer
- Universitätsmedizin Greifswald, Institut für Sozialmedizin und Prävention, Greifswald
- Deutsches Zentrum für Herz-Kreislauf-Forschung e.V., Greifswald
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Meyer C, Poser J, Krause K, Rumpf HJ, Batra A, John U. Muster von gesundheitsriskanten Verhaltensweisen und Depressivität bei Patienten der primärmedizinischen Versorgung. Das Gesundheitswesen 2017. [DOI: 10.1055/s-0037-1605735] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- C Meyer
- Universitätsmedizin Greifswald, Institut für Sozialmedizin und Prävention, Greifswald
- Deutsches Zentrum für Herz-Kreislauf-Forschung e.V., Greifswald
| | - J Poser
- Universitätsmedizin Greifswald, Institut für Sozialmedizin und Prävention, Greifswald
| | - K Krause
- Universitätsmedizin Greifswald, Institut für Sozialmedizin und Prävention, Greifswald
| | - HJ Rumpf
- Universität zu Lübeck, Klinik für Psychiatrie und Psychotherapie, Lübeck
| | - A Batra
- Universität Tübingen, Klinik für Psychiatrie und Psychotherapie, Tübingen
| | - U John
- Universitätsmedizin Greifswald, Institut für Sozialmedizin und Prävention, Greifswald
- Deutsches Zentrum für Herz-Kreislauf-Forschung e.V., Greifswald
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Olsen S, Krause K. Activity of xyloglucan endotransglucosylases/hydrolases suggests a role during host invasion by the parasitic plant Cuscuta reflexa. PLoS One 2017; 12:e0176754. [PMID: 28448560 PMCID: PMC5407826 DOI: 10.1371/journal.pone.0176754] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2017] [Accepted: 04/17/2017] [Indexed: 01/12/2023] Open
Abstract
The parasitic vines of the genus Cuscuta form haustoria that grow into other plants and connect with their vascular system, thus allowing the parasite to feed on its host. A major obstacle that meets the infection organ as it penetrates the host tissue is the rigid plant cell wall. In the present study, we examined the activity of xyloglucan endotransglucosylases/hydrolases (XTHs) during the host-invasive growth of the haustorium. The level of xyloglucan endotransglucosylation (XET) activity was found to peak at the penetrating stage of Cuscuta reflexa on its host Pelargonium zonale. In vivo colocalization of XET activity and donor substrate demonstrated XET activity at the border between host and parasite. A test for secretion of XET-active enzymes from haustoria of C. reflexa corroborated this and further indicated that the xyloglucan-modifying enzymes originated from the parasite. A known inhibitor of XET, Coomassie Brilliant Blue R250, was shown to reduce the level of XET in penetrating haustoria of C. reflexa. Moreover, the coating of P. zonale petioles with the inhibitor compound lowered the number of successful haustorial invasions of this otherwise compatible host plant. The presented data indicate that the activity of Cuscuta XTHs at the host-parasite interface is essential to penetration of host plant tissue.
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Affiliation(s)
- Stian Olsen
- Department of Arctic and Marine Biology, Faculty of Biosciences, Fisheries and Economics, UiT The Arctic University of Norway, Tromsø, Norway
- * E-mail:
| | - Kirsten Krause
- Department of Arctic and Marine Biology, Faculty of Biosciences, Fisheries and Economics, UiT The Arctic University of Norway, Tromsø, Norway
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Krause K, Laier-Groeneveld G, Abazed Y. Struktur und Outcome einer respiratorischen Intensivstation RICU. Pneumologie 2017. [DOI: 10.1055/s-0037-1598317] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- K Krause
- Med Klinik II, Ev. Klinikum Niederrhein, Ejk Oberhausen
| | | | - Y Abazed
- Med Klinik II, Ev. Klinikum Niederrhein, Ejk Oberhausen
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Laier-Groeneveld G, Krause K, Abazed Y. Welches Beatmungsziel: Atmungsentlastung oder Lungenprotektion? Eine Kasuistik. Pneumologie 2017. [DOI: 10.1055/s-0037-1598325] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
| | - K Krause
- Med Klinik II, Klinikum Niederrhein, Ejk Oberhausen
| | - Y Abazed
- Med Klinik II, Klinikum Niederrhein, Ejk Oberhausen
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Teubner M, Fuß J, Kühn K, Krause K, Schmitz-Linneweber C. The RNA recognition motif protein CP33A is a global ligand of chloroplast mRNAs and is essential for plastid biogenesis and plant development. Plant J 2017; 89:472-485. [PMID: 27743418 DOI: 10.1111/tpj.13396] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2016] [Revised: 09/29/2016] [Accepted: 10/07/2016] [Indexed: 06/06/2023]
Abstract
Chloroplast RNA metabolism depends on a multitude of nuclear-encoded RNA-binding proteins (RBPs). Most known chloroplast RBPs address specific RNA targets and RNA-processing functions. However, members of the small chloroplast ribonucleoprotein family (cpRNPs) play a global role in processing and stabilizing chloroplast RNAs. Here, we show that the cpRNP CP33A localizes to a distinct sub-chloroplastic domain and is essential for chloroplast development. The loss of CP33A yields albino seedlings that exhibit aberrant leaf development and can only survive in the presence of an external carbon source. Genome-wide RNA association studies demonstrate that CP33A associates with all chloroplast mRNAs. For a given transcript, quantification of CP33A-bound versus free RNAs demonstrates that CP33A associates with the majority of most mRNAs analyzed. Our results further show that CP33A is required for the accumulation of a number of tested mRNAs, and is particularly relevant for unspliced and unprocessed precursor mRNAs. Finally, CP33A fails to associate with polysomes or to strongly co-precipitate with ribosomal RNA, suggesting that it defines a ribodomain that is separate from the chloroplast translation machinery. Collectively, these findings suggest that CP33A contributes to globally essential RNA processes in the chloroplasts of higher plants.
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Affiliation(s)
- Marlene Teubner
- Humboldt-Universität Berlin, Institut für Biologie, Chausseestrasse 117, 10115, Berlin, Germany
| | - Janina Fuß
- Department of Arctic and Marine Biology, UiT The Arctic University of Norway, Dramsvegen 201, 9037, Tromsø, Norway
| | - Kristina Kühn
- Humboldt-Universität Berlin, Institut für Biologie, Chausseestrasse 117, 10115, Berlin, Germany
| | - Kirsten Krause
- Department of Arctic and Marine Biology, UiT The Arctic University of Norway, Dramsvegen 201, 9037, Tromsø, Norway
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Striberny B, Melton AE, Schwacke R, Krause K, Fischer K, Goertzen LR, Rashotte AM. Cytokinin Response Factor 5 has transcriptional activity governed by its C-terminal domain. Plant Signal Behav 2017; 12:e1276684. [PMID: 28045578 PMCID: PMC5351726 DOI: 10.1080/15592324.2016.1276684] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2016] [Revised: 12/16/2016] [Accepted: 12/21/2016] [Indexed: 05/26/2023]
Abstract
Cytokinin Response Factors (CRFs) are AP2/ERF transcription factors involved in cytokinin signal transduction. CRF proteins consist of a N-terminal dimerization domain (CRF domain), an AP2 DNA-binding domain, and a clade-specific C-terminal region of unknown function. Using a series of sequential deletions in yeast-2-hybrid assays, we provide evidence that the C-terminal region of Arabidopsis CRF5 can confer transactivation activity. Although comparative analyses identified evolutionarily conserved protein sequence within the C-terminal region, deletion experiments suggest that this transactivation domain has a partially redundant modular structure required for activation of target gene transcription.
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Affiliation(s)
- Bernd Striberny
- Department of Arctic and Marine Biology, UiT The Arctic University of Norway in Tromsø, Dramsvegen, Tromsø, Norway
- ArcticZymes AS, Sykehusveien, Tromsø, Norway
| | - Anthony E. Melton
- Department of Biological Sciences, Auburn University, Auburn, AL, USA
| | - Rainer Schwacke
- Department of Arctic and Marine Biology, UiT The Arctic University of Norway in Tromsø, Dramsvegen, Tromsø, Norway
| | - Kirsten Krause
- Department of Arctic and Marine Biology, UiT The Arctic University of Norway in Tromsø, Dramsvegen, Tromsø, Norway
| | - Karsten Fischer
- Department of Arctic and Marine Biology, UiT The Arctic University of Norway in Tromsø, Dramsvegen, Tromsø, Norway
| | | | - Aaron M. Rashotte
- Department of Biological Sciences, Auburn University, Auburn, AL, USA
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