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Perroud C, Thurian D, Andres M, Künzi A, Wiedemann G, Zeerleder S, Bacher U, Pabst T, Banz Y, Porret N, Rebmann E. Effect of MAPK activation via mutations in NRAS, KRAS and BRAF on clinical outcome in newly diagnosed multiple myeloma. Hematol Oncol 2023; 41:912-921. [PMID: 37452600 DOI: 10.1002/hon.3208] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2023] [Revised: 07/02/2023] [Accepted: 07/03/2023] [Indexed: 07/18/2023]
Abstract
Until now, next generation sequencing (NGS) data has not been incorporated into any prognostic stratification of multiple myeloma (MM) and no therapeutic considerations are based upon it. In this work, we correlated NGS data with (1) therapy response and survival parameters in newly diagnosed multiple myeloma, treated by VRd * and (2) MM disease stage: newly diagnosed multiple myeloma (ndMM) versus relapsed and/or refractory (relapsed/refractory multiple myeloma). We analyzed 126 patients, with ndMM and relapsed refractory multiple myeloma (rrMM), treated at the University Hospital of Bern (Inselspital). Next generation sequencing was performed on bone marrow, as part of routine diagnostics. The NGS panel comprised eight genes CCND1, DIS3, EGR1, FAM46C (TENT5C), FGFR3, PRDM1, TP53, TRAF3 and seven hotspots in BRAF, IDH1, IDH2, IRF4, KRAS, NRAS. The primary endpoint was complete remission (CR) after VRd in ndMM, in correlation with mutational profile. Mutational load was generally higher in rrMM, with more frequently mutated TP53: 11/87 (13%) in ndMM versus 9/11 (81%) in rrMM (OR 0.0857, p = 0.0007). In ndMM, treated by VRd, mutations in MAPK-pathway members (NRAS, KRAS or BRAF) were associated with reduced probability of CR (21/38, 55%), as compared with wild type NRAS, KRAS or BRAF (34/40, 85%; OR 0.2225, p = 0.006). NRAS c.181C > A (p.Q61K) as a single mutation event showed a trend to reduced probability of achieving CR (OR 0.0912, p = 0.0247). Activation of MAPK pathway via mutated NRAS, KRAS and BRAF genes seems to have a negative impact on outcome in ndMM patients receiving VRd therapy. VRd* - bortezomib (Velcade®), lenalidomide (Revlimid®) and dexamethasone.
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Affiliation(s)
- Camille Perroud
- Department of Hematology and Central Hematology Laboratory, Inselspital, University Hospital of Bern, Bern, Switzerland
- Department of Internal Medicine, Hôpital Cantonal Fribourgeois HFR, Fribourg, Switzerland
| | - Dario Thurian
- Department of Hematology and Central Hematology Laboratory, Inselspital, University Hospital of Bern, Bern, Switzerland
- Department of Internal Medicine, Spital Thun STS AG, Thun, Switzerland
| | - Martin Andres
- Department of Hematology and Central Hematology Laboratory, Inselspital, University Hospital of Bern, Bern, Switzerland
| | - Arnaud Künzi
- Clinical Trials Unit, University of Bern, Bern, Switzerland
| | - Gertrud Wiedemann
- Department of Hematology and Central Hematology Laboratory, Inselspital, University Hospital of Bern, Bern, Switzerland
| | - Sacha Zeerleder
- Department of Hematology, Kantonsspital Luzern and University of Bern, Luzern, Switzerland
| | - Ulrike Bacher
- Department of Hematology and Central Hematology Laboratory, Inselspital, University Hospital of Bern, Bern, Switzerland
| | - Thomas Pabst
- Department of Clinical Oncology, Inselspital, University Hospital of Bern, Bern, Switzerland
| | - Yara Banz
- Institute of Pathology, University of Bern, Bern, Switzerland
| | - Naomi Porret
- Department of Hematology and Central Hematology Laboratory, Inselspital, University Hospital of Bern, Bern, Switzerland
| | - Ekaterina Rebmann
- Department of Hematology and Central Hematology Laboratory, Inselspital, University Hospital of Bern, Bern, Switzerland
- Department of Oncology-Hematology, Hospital of Neuchâtel (RHNe), Neuchâtel, Switzerland
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Messerli C, Wiedemann G, Porret N, Nagler M, Seipel K, Jeker B, Novak U, Zeerleder S, Bacher U, Pabst T. Correlation of Peripheral Chimeric Antigen Receptor T-cell (CAR-T Cell) mRNA Expression Levels with Toxicities and Outcomes in Patients with Diffuse Large B-cell Lymphoma. Turk J Haematol 2023; 40:187-196. [PMID: 37519105 PMCID: PMC10476258 DOI: 10.4274/tjh.galenos.2023.2023.0136] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Accepted: 07/24/2023] [Indexed: 08/01/2023] Open
Abstract
Cytokine-release syndrome (CRS) and immune effector cell-associated neurotoxicity syndrome (ICANS) are significant complications in patients with relapsed/refractory diffuse large B-cell lymphoma undergoing chimeric antigen receptor T-cell (CAR-T cell) therapy. However, it remains unclear whether CAR-T cell expression itself is clinically relevant. We assessed CAR-T cell mRNA expression and DNA concentration by digital droplet PCR in peripheral blood from 14 sequential CAR-T cell recipients. Patients were grouped according to CAR-T cell peak expression. Patients with high CAR-T cell peak expression (8 patients; 57%) had higher rates of ICANS (p=0.0308) and intensive care unit admission (p=0.0404), longer durations of hospitalization (p=0.0077), and, although not statistically significant, a higher rate of CRS (p=0.0778). There was a correlation of CAR-T cell mRNA expression with DNA concentration, but CAR-T cell expression levels failed to correlate to response or survival. Our data suggest that higher CAR-T cell peak mRNA expression is associated with increased risk for ICANS and possibly CRS, requiring further investigation in larger studies.
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Affiliation(s)
- Christian Messerli
- University Hospital and University of Bern, Department of Medical Oncology, Bern, Switzerland
| | - Gertrud Wiedemann
- University Hospital and University of Bern, Department of Hematology and Central Hematology Laboratory, Bern, Switzerland
| | - Naomi Porret
- University Hospital and University of Bern, Department of Hematology and Central Hematology Laboratory, Bern, Switzerland
| | - Michael Nagler
- University Institute of Clinical Chemistry, University Hospital and University of Bern, Bern, Switzerland
| | - Katja Seipel
- University of Bern, Department for Biomedical Research, Bern, Switzerland
| | - Barbara Jeker
- University Hospital and University of Bern, Department of Medical Oncology, Bern, Switzerland
| | - Urban Novak
- University Hospital and University of Bern, Department of Medical Oncology, Bern, Switzerland
| | - Sacha Zeerleder
- University Hospital and University of Bern, Department of Hematology and Central Hematology Laboratory, Bern, Switzerland
| | - Ulrike Bacher
- University Hospital and University of Bern, Department of Hematology and Central Hematology Laboratory, Bern, Switzerland
- These authors contributed equally to this work
| | - Thomas Pabst
- University Hospital and University of Bern, Department of Medical Oncology, Bern, Switzerland
- These authors contributed equally to this work
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Hu R, Li X, Hu Y, Zhang R, Lv Q, Zhang M, Sheng X, Zhao F, Chen Z, Ding Y, Yuan H, Wu X, Xing S, Yan X, Bao F, Wan P, Xiao L, Wang X, Xiao W, Decker EL, van Gessel N, Renault H, Wiedemann G, Horst NA, Haas FB, Wilhelmsson PKI, Ullrich KK, Neumann E, Lv B, Liang C, Du H, Lu H, Gao Q, Cheng Z, You H, Xin P, Chu J, Huang CH, Liu Y, Dong S, Zhang L, Chen F, Deng L, Duan F, Zhao W, Li K, Li Z, Li X, Cui H, Zhang YE, Ma C, Zhu R, Jia Y, Wang M, Hasebe M, Fu J, Goffinet B, Ma H, Rensing SA, Reski R, He Y. Adaptive evolution of the enigmatic Takakia now facing climate change in Tibet. Cell 2023; 186:3558-3576.e17. [PMID: 37562403 DOI: 10.1016/j.cell.2023.07.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Revised: 03/23/2023] [Accepted: 07/03/2023] [Indexed: 08/12/2023]
Abstract
The most extreme environments are the most vulnerable to transformation under a rapidly changing climate. These ecosystems harbor some of the most specialized species, which will likely suffer the highest extinction rates. We document the steepest temperature increase (2010-2021) on record at altitudes of above 4,000 m, triggering a decline of the relictual and highly adapted moss Takakia lepidozioides. Its de-novo-sequenced genome with 27,467 protein-coding genes includes distinct adaptations to abiotic stresses and comprises the largest number of fast-evolving genes under positive selection. The uplift of the study site in the last 65 million years has resulted in life-threatening UV-B radiation and drastically reduced temperatures, and we detected several of the molecular adaptations of Takakia to these environmental changes. Surprisingly, specific morphological features likely occurred earlier than 165 mya in much warmer environments. Following nearly 400 million years of evolution and resilience, this species is now facing extinction.
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Affiliation(s)
- Ruoyang Hu
- Beijing Key Laboratory of Plant Gene Resources and Biotechnology for Carbon Reduction and Environmental Improvement, College of Life Sciences, Capital Normal University (CNU), Beijing 100048, China; State Key Laboratory of Resource Insects, Institute of Apicultural Research, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Xuedong Li
- Beijing Key Laboratory of Plant Gene Resources and Biotechnology for Carbon Reduction and Environmental Improvement, College of Life Sciences, Capital Normal University (CNU), Beijing 100048, China
| | - Yong Hu
- Beijing Key Laboratory of Plant Gene Resources and Biotechnology for Carbon Reduction and Environmental Improvement, College of Life Sciences, Capital Normal University (CNU), Beijing 100048, China
| | - Runjie Zhang
- Beijing Key Laboratory of Plant Gene Resources and Biotechnology for Carbon Reduction and Environmental Improvement, College of Life Sciences, Capital Normal University (CNU), Beijing 100048, China
| | - Qiang Lv
- Beijing Key Laboratory of Plant Gene Resources and Biotechnology for Carbon Reduction and Environmental Improvement, College of Life Sciences, Capital Normal University (CNU), Beijing 100048, China
| | - Min Zhang
- Beijing Key Laboratory of Plant Gene Resources and Biotechnology for Carbon Reduction and Environmental Improvement, College of Life Sciences, Capital Normal University (CNU), Beijing 100048, China
| | - Xianyong Sheng
- Beijing Key Laboratory of Plant Gene Resources and Biotechnology for Carbon Reduction and Environmental Improvement, College of Life Sciences, Capital Normal University (CNU), Beijing 100048, China
| | - Feng Zhao
- Beijing Key Laboratory of Plant Gene Resources and Biotechnology for Carbon Reduction and Environmental Improvement, College of Life Sciences, Capital Normal University (CNU), Beijing 100048, China
| | - Zhijia Chen
- Beijing Key Laboratory of Plant Gene Resources and Biotechnology for Carbon Reduction and Environmental Improvement, College of Life Sciences, Capital Normal University (CNU), Beijing 100048, China
| | - Yuhan Ding
- Beijing Key Laboratory of Plant Gene Resources and Biotechnology for Carbon Reduction and Environmental Improvement, College of Life Sciences, Capital Normal University (CNU), Beijing 100048, China
| | - Huan Yuan
- Beijing Key Laboratory of Plant Gene Resources and Biotechnology for Carbon Reduction and Environmental Improvement, College of Life Sciences, Capital Normal University (CNU), Beijing 100048, China
| | - Xiaofeng Wu
- Beijing Key Laboratory of Plant Gene Resources and Biotechnology for Carbon Reduction and Environmental Improvement, College of Life Sciences, Capital Normal University (CNU), Beijing 100048, China
| | - Shuang Xing
- Beijing Key Laboratory of Plant Gene Resources and Biotechnology for Carbon Reduction and Environmental Improvement, College of Life Sciences, Capital Normal University (CNU), Beijing 100048, China
| | - Xiaoyu Yan
- Beijing Key Laboratory of Plant Gene Resources and Biotechnology for Carbon Reduction and Environmental Improvement, College of Life Sciences, Capital Normal University (CNU), Beijing 100048, China
| | - Fang Bao
- Beijing Key Laboratory of Plant Gene Resources and Biotechnology for Carbon Reduction and Environmental Improvement, College of Life Sciences, Capital Normal University (CNU), Beijing 100048, China
| | - Ping Wan
- Beijing Key Laboratory of Plant Gene Resources and Biotechnology for Carbon Reduction and Environmental Improvement, College of Life Sciences, Capital Normal University (CNU), Beijing 100048, China
| | - Lihong Xiao
- Beijing Key Laboratory of Plant Gene Resources and Biotechnology for Carbon Reduction and Environmental Improvement, College of Life Sciences, Capital Normal University (CNU), Beijing 100048, China; State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou, Zhejiang 311300, China
| | - Xiaoqin Wang
- Beijing Key Laboratory of Plant Gene Resources and Biotechnology for Carbon Reduction and Environmental Improvement, College of Life Sciences, Capital Normal University (CNU), Beijing 100048, China
| | - Wei Xiao
- Beijing Key Laboratory of Plant Gene Resources and Biotechnology for Carbon Reduction and Environmental Improvement, College of Life Sciences, Capital Normal University (CNU), Beijing 100048, China
| | - Eva L Decker
- Plant Biotechnology, Faculty of Biology, University of Freiburg, 79104 Freiburg, Germany
| | - Nico van Gessel
- Plant Biotechnology, Faculty of Biology, University of Freiburg, 79104 Freiburg, Germany
| | - Hugues Renault
- Plant Biotechnology, Faculty of Biology, University of Freiburg, 79104 Freiburg, Germany; Institut de Biologie Moléculaire des Plantes (IBMP), CNRS, University of Strasbourg, 67084 Strasbourg, France
| | - Gertrud Wiedemann
- Plant Biotechnology, Faculty of Biology, University of Freiburg, 79104 Freiburg, Germany; Inselspital, University of Bern, 3010 Bern, Switzerland
| | - Nelly A Horst
- Plant Biotechnology, Faculty of Biology, University of Freiburg, 79104 Freiburg, Germany; MetaSystems Hard & Software GmbH, 68804 Altlussheim, Germany
| | - Fabian B Haas
- Department of Biology, University of Marburg, 35043 Marburg, Germany
| | | | - Kristian K Ullrich
- Department of Biology, University of Marburg, 35043 Marburg, Germany; Department of Evolutionary Genetics, Max Planck Institute for Evolutionary Biology, 24306 Plön, Germany
| | - Eva Neumann
- Department of Biology, University of Marburg, 35043 Marburg, Germany
| | - Bin Lv
- Department of Integrative Biology, University of Guelph, Guelph, ON N1G 2W1, Canada; Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, Sichuan 610041, China
| | - Chengzhi Liang
- National Centre for Plant Gene Research (Beijing), Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Huilong Du
- National Centre for Plant Gene Research (Beijing), Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China; School of Life Sciences, Institute of Life Sciences and Green Development, Hebei University, Baoding, Hebei 071002, China
| | - Hongwei Lu
- National Centre for Plant Gene Research (Beijing), Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China; Department of Biology, School of Life Sciences, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China
| | - Qiang Gao
- National Centre for Plant Gene Research (Beijing), Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China; Genomics and Genetic Engineering Laboratory of Ornamental Plants, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, Zhejiang 310058, China
| | - Zhukuan Cheng
- National Centre for Plant Gene Research (Beijing), Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China; Key Laboratory of Plant Functional Genomics of the Ministry of Education, Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops, Yangzhou University, Yangzhou, Jiangsu 225009, China
| | - Hanli You
- National Centre for Plant Gene Research (Beijing), Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China; Key Laboratory of Plant Functional Genomics of the Ministry of Education, Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops, Yangzhou University, Yangzhou, Jiangsu 225009, China
| | - Peiyong Xin
- National Centre for Plant Gene Research (Beijing), Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China
| | - Jinfang Chu
- National Centre for Plant Gene Research (Beijing), Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Chien-Hsun Huang
- State Key Laboratory of Genetic Engineering and Collaborative Innovation Center of Genetics and Development, Ministry of Education Key Laboratory of Biodiversity and Ecological Engineering, School of Life Sciences, Fudan University, Shanghai 200433, China; Key Laboratory of Forage and Endemic Crop Biology, Ministry of Education, School of Life Sciences, Inner Mongolia University, Hohhot 010031, China
| | - Yang Liu
- Department of Ecology and Evolutionary Biology, University of Connecticut, Unit 3043, Storrs, CT 06269, USA; Key Laboratory of Southern Subtropical Plant Diversity, Fairy Lake Botanical Garden, Shenzhen & Chinese Academy of Sciences, Shenzhen, Guangdong 518004, China; State Key Laboratory of Agricultural Genomics, BGI-Shenzhen, Shenzhen, Guangdong 518085, China
| | - Shanshan Dong
- Key Laboratory of Southern Subtropical Plant Diversity, Fairy Lake Botanical Garden, Shenzhen & Chinese Academy of Sciences, Shenzhen, Guangdong 518004, China
| | - Liangsheng Zhang
- Genomics and Genetic Engineering Laboratory of Ornamental Plants, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, Zhejiang 310058, China
| | - Fei Chen
- Sanya Nanfan Research Institute from Hainan University, Hainan Yazhou Bay Seed Laboratory, Sanya, Hainan 572025, China
| | - Lei Deng
- College of Resource Environment and Tourism, CNU, Beijing 100048, China
| | - Fuzhou Duan
- College of Resource Environment and Tourism, CNU, Beijing 100048, China
| | - Wenji Zhao
- College of Resource Environment and Tourism, CNU, Beijing 100048, China
| | - Kai Li
- Department of Chemistry, CNU, Beijing 100048, China
| | - Zhongfeng Li
- Department of Chemistry, CNU, Beijing 100048, China
| | - Xingru Li
- Department of Chemistry, CNU, Beijing 100048, China
| | - Hengjian Cui
- School of Mathematical Sciences, CNU, Beijing 100048, China
| | - Yong E Zhang
- Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China
| | - Chuan Ma
- State Key Laboratory of Resource Insects, Institute of Apicultural Research, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Ruiliang Zhu
- Department of Biology, School of Life Sciences, East China Normal University, Shanghai 200241, China
| | - Yu Jia
- State Key Laboratory of Systematic and Evolutionary Botany, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China
| | - Meizhi Wang
- State Key Laboratory of Systematic and Evolutionary Botany, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China
| | - Mitsuyasu Hasebe
- Division of Evolutionary Biology, National Institute for Basic Biology, Okazaki, Aichi 444-8585, Japan; Department of Basic Biology, The Graduate School for Advanced Studies (SOKENDAI), Okazaki 444-8585, Japan
| | - Jinzhong Fu
- Department of Integrative Biology, University of Guelph, Guelph, ON N1G 2W1, Canada
| | - Bernard Goffinet
- Department of Ecology and Evolutionary Biology, University of Connecticut, Unit 3043, Storrs, CT 06269, USA
| | - Hong Ma
- Department of Biology, Huck Institutes of the Life Sciences, Pennsylvania State University, University Park, PA 16802, USA
| | - Stefan A Rensing
- Department of Biology, University of Marburg, 35043 Marburg, Germany; Faculty of Chemistry and Pharmacy, University of Freiburg, 79104 Freiburg, Germany
| | - Ralf Reski
- Plant Biotechnology, Faculty of Biology, University of Freiburg, 79104 Freiburg, Germany; Signalling Research Centres BIOSS and CIBSS, University of Freiburg, 79104 Freiburg, Germany.
| | - Yikun He
- Beijing Key Laboratory of Plant Gene Resources and Biotechnology for Carbon Reduction and Environmental Improvement, College of Life Sciences, Capital Normal University (CNU), Beijing 100048, China.
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Sanoyan DA, Seipel K, Bacher U, Kronig MN, Porret N, Wiedemann G, Daskalakis M, Pabst T. Real-life experiences with CAR T-cell therapy with idecabtagene vicleucel (ide-cel) for triple-class exposed relapsed/refractory multiple myeloma patients. BMC Cancer 2023; 23:345. [PMID: 37061680 PMCID: PMC10105393 DOI: 10.1186/s12885-023-10824-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Accepted: 04/07/2023] [Indexed: 04/17/2023] Open
Abstract
BACKGROUND Chimeric antigen receptor (CAR) T-cell therapy has revolutionized the treatment landscape of relapsed/refractory multiple myeloma (RRMM), leading to unprecedented responses in this patient population. Idecabtagene vicleucel (ide-cel) has been recently approved for treatment of triple-class exposed RRMM. We report real-life experiences with the commercial use of ide-cel in RRMM patients. METHODS We performed a retrospective analysis of the first 16 triple-class exposed RRMM patients treated with ide-cel at a single academic center. We assessed toxicities, response to treatment, CAR T expansion and soluble BCMA (sBCMA) levels. RESULTS We identified 16 consecutive RRMM patients treated with ide-cel between 06-10/2022. Median age was 69 years, 6 (38%) patients had high-risk cytogenetics, 3 (19%) R-ISS stage III, and 5 (31%) extramedullary disease. Median number of previous treatment lines was 6 (3-12). Manufacturing success rate was 88% (6% required second lymphapheresis, 6% received an out-of-specification product). At 3 months, the overall response rate (ORR) was 69% (44% sCR, 6% CR, 19% VGPR). Cytokine release syndrome (CRS) occurred in 15 (94%) patients (88% G1, 6% G2), immune effector-cell associated neurotoxicity syndrome (ICANS) in 1 (6% G1), febrile neutropenia in 11 (69%), and infections in 5 (31%). Prolonged hematologic toxicity occurred in 4/16 (25%) patients. Other non-hematological toxicities were elevated hepatic enzymes (38%), colitis (6%, G3) and DIC (6%, G2). Responses were more frequent in patients with higher CAR T expansion (100% vs 38%), and lack of decrease or plateau of sBCMA levels was typically observed in non-responders. CONCLUSIONS We report one of the first cohorts of RRMM treated with commercial ide-cel. The ORR was 69% and safety profile was manageable, but prolonged hematologic toxicity still represents a major challenge. Responses correlated with in vivo CAR T cell expansion, underlining the need of further research to optimize CAR T expansion.
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Affiliation(s)
- Dilara Akhoundova Sanoyan
- Department of Medical Oncology, Inselspital, University Hospital of Bern, Center for Hemato-Oncology; University Cancer Center, Bern, 3010, Switzerland
- Department for Biomedical Research, University of Bern, Bern, 3008, Switzerland
| | - Katja Seipel
- Department for Biomedical Research, University of Bern, Bern, 3008, Switzerland
| | - Ulrike Bacher
- Department of Hematology and Central Hematology Laboratory, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Marie-Noelle Kronig
- Department of Medical Oncology, Inselspital, University Hospital of Bern, Center for Hemato-Oncology; University Cancer Center, Bern, 3010, Switzerland
| | - Naomi Porret
- Clinical Genomics Lab, Inselspital, University Hospital of Bern, Bern, 3010, Switzerland
| | - Gertrud Wiedemann
- Clinical Genomics Lab, Inselspital, University Hospital of Bern, Bern, 3010, Switzerland
| | - Michael Daskalakis
- Department of Hematology and Central Hematology Laboratory, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Thomas Pabst
- Department of Medical Oncology, Inselspital, University Hospital of Bern, Center for Hemato-Oncology; University Cancer Center, Bern, 3010, Switzerland.
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Rebmann Chigrinova E, Porret NA, Andres M, Wiedemann G, Banz Y, Legros M, Pollak M, Oppliger Leibundgut E, Pabst T, Bacher U. Correlation of plasma cell assessment by phenotypic methods and molecular profiles by NGS in patients with plasma cell dyscrasias. BMC Med Genomics 2022; 15:203. [PMID: 36138464 PMCID: PMC9503268 DOI: 10.1186/s12920-022-01346-1] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2021] [Accepted: 09/01/2022] [Indexed: 11/25/2022] Open
Abstract
Background Next-generation sequencing (NGS) detects somatic mutations in a high proportion of plasma cell dyscrasias (PCD), but is currently not integrated into diagnostic routine. We correlated NGS data with degree of bone marrow (BM) involvement by cytomorphology (BMC), histopathology (BMH), and multiparameter flow cytometry (MFC) in 90 PCD patients.
Methods Of the 90 patients the diagnoses comprised multiple myeloma (n = 77), MGUS (n = 7), AL-amyloidosis (n = 4) or solitary plasmocytoma (n = 2). The NGS panel included eight genes CCND1, DIS3, EGR1, FAM46C (TENT5C), FGFR3, PRDM1, TP53, TRAF3, and seven hotspots in BRAF, IDH1, IDH2, IRF4, KRAS, NRAS. Results Mutations were detected in 64/90 (71%) of cases. KRAS (29%), NRAS (16%) and DIS3 (16%) were most frequently mutated. At least one mutation/sample corresponded to a higher degree of BM involvement with a mean of 11% pathologic PC by MFC (range, 0.002–62%), and ~ 50% (3–100%) as defined by both BMC and BMH. Conclusions The probability of detecting a mutation by NGS in the BM was highest in samples with > 10% clonal PC by MFC, or > 20% PC by BMC/ BMH. We propose further evaluation of these thresholds as a practical cut-off for processing of samples by NGS at initial PCD diagnosis. Supplementary Information The online version contains supplementary material available at 10.1186/s12920-022-01346-1.
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Affiliation(s)
| | - Naomi A Porret
- Department of Hematology; Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Martin Andres
- Department of Hematology; Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Gertrud Wiedemann
- Department of Hematology; Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Yara Banz
- Institute of Pathology, University of Bern, Bern, Switzerland
| | - Myriam Legros
- Center for Laboratory Medicine (ZLM), Inselspital, University of Bern, Bern, Switzerland
| | - Matthias Pollak
- Department of Hematology; Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | | | - Thomas Pabst
- Department of Medical Oncology, Inselspital, University of Bern, Bern, Switzerland
| | - Ulrike Bacher
- Department of Hematology; Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
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Seipel K, Porret N, Wiedemann G, Jeker B, Bacher VU, Pabst T. sBCMA Plasma Level Dynamics and Anti-BCMA CAR-T-Cell Treatment in Relapsed Multiple Myeloma. Curr Issues Mol Biol 2022; 44:1463-1471. [PMID: 35723356 PMCID: PMC9164019 DOI: 10.3390/cimb44040098] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2022] [Revised: 03/21/2022] [Accepted: 03/22/2022] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND Novel chimeric antigen receptor T-cells (CAR-T) target the B-cell maturation antigen (BCMA) expressed on multiple myeloma cells. Assays monitoring CAR-T cell expansion and treatment response are being implemented in clinical routine. METHODS Plasma levels of soluble BCMA (sBCMA) and anti-BCMA CAR-T cell copy numbers were monitored in the blood, following CAR-T cell infusion in patients with relapsed multiple myeloma. sBCMA peptide concentration was determined in the plasma, applying a human BCMA/TNFRS17 ELISA. ddPCR was performed using probes targeting the intracellular signaling domains 4-1BB und CD3zeta of the anti-BCMA CAR-T construct. RESULTS We report responses in the first five patients who received anti-BCMA CAR- T cell therapy at our center. Four patients achieved a complete remission (CR) in the bone marrow one month after CAR-T infusion, with three patients achieving stringent CR, determined by flow cytometry techniques. Anti-BCMA CAR-T cells were detectable in the peripheral blood for up to 300 days, with copy numbers peaking 7 to 14 days post-infusion. sBCMA plasma levels started declining one to ten days post infusion, reaching minimal levels 30 to 60 days post infusion, before rebounding to normal levels. CONCLUSIONS Our data confirm a favorable response to treatment in four of the first five patients receiving anti-BCMA CAR-T at our hospital. Anti-BCMA CAR-T cell expansion seems to peak in the peripheral blood in a similar pattern compared to the CAR-T cell products already approved for lymphoma treatment. sBCMA plasma level may be a valid biomarker in assessing response to BCMA-targeting therapies in myeloma patients.
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Affiliation(s)
- Katja Seipel
- Department for Biomedical Research, University of Bern, 2008 Bern, Switzerland
| | - Naomi Porret
- Department of Hematology and Central Hematology Laboratory, Inselspital, Bern University Hospital, University of Bern, 3010 Bern, Switzerland; (N.P.); (G.W.); (V.U.B.)
| | - Gertrud Wiedemann
- Department of Hematology and Central Hematology Laboratory, Inselspital, Bern University Hospital, University of Bern, 3010 Bern, Switzerland; (N.P.); (G.W.); (V.U.B.)
| | - Barbara Jeker
- Department of Medical Oncology, Bern University Hospital, 3010 Bern, Switzerland;
| | - Vera Ulrike Bacher
- Department of Hematology and Central Hematology Laboratory, Inselspital, Bern University Hospital, University of Bern, 3010 Bern, Switzerland; (N.P.); (G.W.); (V.U.B.)
| | - Thomas Pabst
- Department of Medical Oncology, Bern University Hospital, 3010 Bern, Switzerland;
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7
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Rempfer C, Wiedemann G, Schween G, Kerres KL, Lucht JM, Horres R, Decker EL, Reski R. Autopolyploidization affects transcript patterns and gene targeting frequencies in Physcomitrella. Plant Cell Rep 2022; 41:153-173. [PMID: 34636965 PMCID: PMC8803787 DOI: 10.1007/s00299-021-02794-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Accepted: 09/23/2021] [Indexed: 06/13/2023]
Abstract
In Physcomitrella, whole-genome duplications affected the expression of about 3.7% of the protein-encoding genes, some of them relevant for DNA repair, resulting in a massively reduced gene-targeting frequency. Qualitative changes in gene expression after an autopolyploidization event, a pure duplication of the whole genome (WGD), might be relevant for a different regulation of molecular mechanisms between angiosperms growing in a life cycle with a dominant diploid sporophytic stage and the haploid-dominant mosses. Whereas angiosperms repair DNA double-strand breaks (DSB) preferentially via non-homologous end joining (NHEJ), in the moss Physcomitrella homologous recombination (HR) is the main DNA-DSB repair pathway. HR facilitates the precise integration of foreign DNA into the genome via gene targeting (GT). Here, we studied the influence of ploidy on gene expression patterns and GT efficiency in Physcomitrella using haploid plants and autodiploid plants, generated via an artificial WGD. Single cells (protoplasts) were transfected with a GT construct and material from different time-points after transfection was analysed by microarrays and SuperSAGE sequencing. In the SuperSAGE data, we detected 3.7% of the Physcomitrella genes as differentially expressed in response to the WGD event. Among the differentially expressed genes involved in DNA-DSB repair was an upregulated gene encoding the X-ray repair cross-complementing protein 4 (XRCC4), a key player in NHEJ. Analysing the GT efficiency, we observed that autodiploid plants were significantly GT suppressed (p < 0.001) attaining only one third of the expected GT rates. Hence, an alteration of global transcript patterns, including genes related to DNA repair, in autodiploid Physcomitrella plants correlated with a drastic suppression of HR.
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Affiliation(s)
- Christine Rempfer
- Plant Biotechnology, Faculty of Biology, University of Freiburg, Schaenzlestr. 1, 79104, Freiburg, Germany
- Spemann Graduate School of Biology and Medicine (SGBM), University of Freiburg, 79104, Freiburg, Germany
| | - Gertrud Wiedemann
- Plant Biotechnology, Faculty of Biology, University of Freiburg, Schaenzlestr. 1, 79104, Freiburg, Germany
- Department of Hematology and Central Hematology Laboratory, Inselspital, Bern University Hospital, University of Bern, 3010, Bern, Switzerland
| | - Gabriele Schween
- Plant Biotechnology, Faculty of Biology, University of Freiburg, Schaenzlestr. 1, 79104, Freiburg, Germany
- Corteva Agriscience, Pioneer Hi-Bred Northern Europe, Münstertäler Strasse 26, 79427, Eschbach, Germany
| | - Klaus L Kerres
- Plant Biotechnology, Faculty of Biology, University of Freiburg, Schaenzlestr. 1, 79104, Freiburg, Germany
| | - Jan M Lucht
- Plant Biotechnology, Faculty of Biology, University of Freiburg, Schaenzlestr. 1, 79104, Freiburg, Germany
- Scienceindustries, Nordstrasse 15, 8006, Zurich, Switzerland
| | - Ralf Horres
- GenXPro GmbH, Altenhöferallee 3, 60438, Frankfurt am Main, Germany
| | - Eva L Decker
- Plant Biotechnology, Faculty of Biology, University of Freiburg, Schaenzlestr. 1, 79104, Freiburg, Germany
| | - Ralf Reski
- Plant Biotechnology, Faculty of Biology, University of Freiburg, Schaenzlestr. 1, 79104, Freiburg, Germany.
- Spemann Graduate School of Biology and Medicine (SGBM), University of Freiburg, 79104, Freiburg, Germany.
- Signalling Research Centres BIOSS and CIBSS, Schaenzlestr. 18, 79104, Freiburg, Germany.
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8
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Flach J, Shumilov E, Wiedemann G, Porret N, Shakhanova I, Bürki S, Legros M, Joncourt R, Pabst T, Bacher U. Clinical potential of introducing next-generation sequencing in patients at relapse of acute myeloid leukemia. Hematol Oncol 2020; 38:425-431. [PMID: 32306411 DOI: 10.1002/hon.2739] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [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: 03/11/2020] [Revised: 04/02/2020] [Accepted: 04/14/2020] [Indexed: 12/19/2022]
Abstract
Relapse of acute myeloid leukemia (AML) remains a major determinant of outcome. A number of molecularly directed treatment options have recently emerged making comprehensive diagnostics an important pillar of clinical decision making at relapse. Acknowledging the high degree of individual genetic variability at AML relapse, next-generation sequencing (NGS) has opened the opportunity for assessing the unique clonal hierarchy of individual AML patients. Knowledge on the genetic makeup of AML is reflected in patient customized treatment strategies thereby providing improved outcomes. For example, the emergence of druggable mutations at relapse enable the use of novel targeted therapies, including FLT3 inhibitors or the recently approved IDH1/2 inhibitors ivosidenib and enasidenib, respectively. Consequently, some patients may undergo novel bridging approaches for reinduction before allogeneic stem cell transplantation, or the identification of an adverse prognostic marker may initiate early donor search. In this review, we summarize the current knowledge of NGS in identifying clonal stability, clonal evolution, and clonal devolution in the context of AML relapse. In light of recent improvements in AML treatment options, NGS-based molecular diagnostics emerges as the basis for molecularly directed treatment decisions in patients at relapse.
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Affiliation(s)
- Johanna Flach
- Department of Hematology and Oncology, Medical Faculty Mannheim of the Heidelberg University, Mannheim, Germany
| | - Evgenii Shumilov
- Department of Hematology and Medical Oncology, University Medicine Göttingen (UMG), Göttingen, Germany
| | - Gertrud Wiedemann
- University Department of Hematology and Central Hematology Laboratory, Inselspital, Bern University Hospital, Bern, Switzerland.,Center of Laboratory Medicine (ZLM)/University Institute of Clinical Chemistry, Inselspital, Bern University Hospital, Bern, Switzerland
| | - Naomi Porret
- University Department of Hematology and Central Hematology Laboratory, Inselspital, Bern University Hospital, Bern, Switzerland.,Center of Laboratory Medicine (ZLM)/University Institute of Clinical Chemistry, Inselspital, Bern University Hospital, Bern, Switzerland
| | - Inna Shakhanova
- Department of Nephrology and Rheumatology, University Medicine Göttingen (UMG), Göttingen, Germany
| | - Susanne Bürki
- Department of Medical Oncology, Inselspital, Bern University Hospital, Bern, Switzerland
| | - Myriam Legros
- Center of Laboratory Medicine (ZLM)/University Institute of Clinical Chemistry, Inselspital, Bern University Hospital, Bern, Switzerland
| | - Raphael Joncourt
- University Department of Hematology and Central Hematology Laboratory, Inselspital, Bern University Hospital, Bern, Switzerland.,Center of Laboratory Medicine (ZLM)/University Institute of Clinical Chemistry, Inselspital, Bern University Hospital, Bern, Switzerland
| | - Thomas Pabst
- Department of Medical Oncology, Inselspital, Bern University Hospital, Bern, Switzerland
| | - Ulrike Bacher
- University Department of Hematology and Central Hematology Laboratory, Inselspital, Bern University Hospital, Bern, Switzerland.,Center of Laboratory Medicine (ZLM)/University Institute of Clinical Chemistry, Inselspital, Bern University Hospital, Bern, Switzerland
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Abstract
SummaryA review of the literature showed that there is no good systematic study of a series of rigorously diagnosed “kleptomaniac” persons, other than those referred by the courts for expert opinions. This applies in particular to German-speaking and other European countries. We therefore report here on the phenomenology, demographics, psychopathology, family histories, treatment histories, behaviour therapy oriented analyses, and treatment results of 12 individuals meeting Diagnostic and Statistical Manual (DSM)-III-R criteria for kleptomania. All patients described an uncontrollable impulse to steal and a reduction in anxiety or tension during or after the act. All had at least one further psychiatric diagnosis. Although the kleptomaniac symptomatology did not seem to be part of these other disorders, the extent of stealing corresponded (positively or negatively) to other psychiatric symptoms such as depressive feelings, excessive urges to eat or migraine attacks. Microanalysis of the act of theft, as well as the preceding and following events (explored by applying behaviour therapy oriented analysis) showed intraindividually consistent, but inter-individually differing triggering factors. There was no evidence of correlation with obsessive-compulsive disorders, but some indications that kleptomania may be associated with affective disorders in terms of an “affective spectrum disorder”. According to a broader definition of “multi-impulsive-disorder” (analogous to Lacey and Evans or Fichter et al), one third of the patients might be diagnosed as “bi-impulsive disorder”. Eight of the 12 patients could be investigated at a mean follow-up time of 2 years after discharge showing favourable results. In conclusion, kleptomaniac behaviour seems to be multiconditionally caused and sustained.
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10
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Seipel K, Messerli C, Wiedemann G, Bacher U, Pabst T. MN1, FOXP1 and hsa-miR-181a-5p as prognostic markers in acute myeloid leukemia patients treated with intensive induction chemotherapy and autologous stem cell transplantation. Leuk Res 2020; 89:106296. [PMID: 31927137 DOI: 10.1016/j.leukres.2020.106296] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2019] [Revised: 12/11/2019] [Accepted: 01/01/2020] [Indexed: 12/30/2022]
Abstract
BACKGROUND The meningioma-1 (MN1) gene is expressed in hematopoietic CD34+ cells and down-regulated during myeloid differentiation. MN1 overexpression has been linked to shorter overall and disease free survival in AML patients treated with intensive induction chemotherapy. MN1 overexpression may still be an adverse prognostic marker in AML patients treated with autologous stem cell transplant (auto-SCT) after intensive induction chemotherapy. METHODS We retrospectively analysed 54 peripheral blood mononuclear cell (PBMC) samples of AML patients who received auto-SCT at remission (CR1) after intensive induction chemotherapy. MN1 and putative MN1-associated mRNAs, as well as MN1-associated micro-RNAs were assessed at diagnosis in peripheral blood mononuclear cells using Taqman gene expression assays. RESULTS AML patients with elevated MN1 or FoxP1 gene expression at diagnosis had a significantly shorter progression-free and overall survival after intensive induction chemo-therapy and auto-SCT. The presence of the favourable risk NPM1 mutation associated with reduced MN1 gene expression. In contrast to MN1 and FOXP1, elevated expression of the putative tumor suppressive micro-RNA hsa-miR-181a-5p was predictive for positive outcome. Correlation analysis of MN1 with myeloid gene expression levels revealed association of MN1 and BMI-1, CD34, FOXP1 and MDM2 expression. Analysis of non-coding RNAs revealed an inverse correlation of MN1 with hsa-miR-20a-5p and hsa-miR-181b-5p expression. CONCLUSIONS MN1, FOXP1 and hsa-miR-181a-5p are prognostic markers in AML patients treated with intensive induction chemotherapy and auto-SCT. While MDM2 is a validated therapeutic target, the transcription factors MN1 and FOXP1, and the chromatin modulator BMI-1 are potential therapeutic targets in the treatment of AML. The tumor suppressor hsa-miR-181a-5p may be a candidate miRNA mimic for therapeutic use.
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MESH Headings
- Adult
- Aged
- Antineoplastic Combined Chemotherapy Protocols/adverse effects
- Antineoplastic Combined Chemotherapy Protocols/therapeutic use
- Biomarkers, Tumor
- Female
- Forkhead Transcription Factors/genetics
- Gene Expression Regulation, Neoplastic
- Hematopoietic Stem Cell Transplantation
- Humans
- Induction Chemotherapy
- Leukemia, Myeloid, Acute/genetics
- Leukemia, Myeloid, Acute/mortality
- Leukemia, Myeloid, Acute/pathology
- Leukemia, Myeloid, Acute/therapy
- Male
- MicroRNAs/genetics
- Middle Aged
- Models, Biological
- Mutation
- Nucleophosmin
- Prognosis
- Repressor Proteins/genetics
- Retrospective Studies
- Trans-Activators/genetics
- Transplantation, Autologous
- Treatment Outcome
- Tumor Suppressor Proteins/genetics
- Young Adult
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Affiliation(s)
- Katja Seipel
- Department for Biomedical Research (DBMR), University of Bern, Bern, Switzerland; Department of Medical Oncology, University Hospital, Inselspital, Bern, Switzerland.
| | - Christian Messerli
- Department for Biomedical Research (DBMR), University of Bern, Bern, Switzerland
| | - Gertrud Wiedemann
- Department of Hematology, University Hospital, Inselspital, Bern, Switzerland; Center of Laboratory Medicine (ZLM), University Hospital, Inselspital, Bern, Switzerland
| | - Ulrike Bacher
- Department of Hematology, University Hospital, Inselspital, Bern, Switzerland; Center of Laboratory Medicine (ZLM), University Hospital, Inselspital, Bern, Switzerland
| | - Thomas Pabst
- Department of Medical Oncology, University Hospital, Inselspital, Bern, Switzerland.
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11
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Shumilov E, Flach J, Joncourt R, Porret N, Wiedemann G, Novak U, Gfeller E, Jeker B, Amstutz U, Pabst T, Bacher U. Clinical value of molecular MRD monitoring by next-generation sequencing in patients with IDH2 mutated AML. Leuk Lymphoma 2019; 60:2588-2590. [DOI: 10.1080/10428194.2019.1585838] [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: 10/27/2022]
Affiliation(s)
- Evgenii Shumilov
- Department of Hematology and Medical Oncology, University Medicine Göttingen (UMG), Göttingen, Germany
| | - Johanna Flach
- Department of Hematology and Oncology, Medical Faculty Mannheim of the Heidelberg University, Mannheim, Germany
| | - Raphael Joncourt
- University Department of Hematology and Central Hematology Laboratory, Inselspital, Bern University Hospital, Bern, Switzerland
| | - Naomi Porret
- University Department of Hematology and Central Hematology Laboratory, Inselspital, Bern University Hospital, Bern, Switzerland
| | - Gertrud Wiedemann
- University Department of Hematology and Central Hematology Laboratory, Inselspital, Bern University Hospital, Bern, Switzerland
| | - Urban Novak
- Department of Medical Oncology, Inselspital, Bern University Hospital, Bern, Switzerland
| | - Eva Gfeller
- University Department of Hematology and Central Hematology Laboratory, Inselspital, Bern University Hospital, Bern, Switzerland
- Center of Laboratory Medicine (ZLM)/University Institute of Clinical Chemistry, Inselspital, Bern University Hospital, Bern, Switzerland
| | - Barbara Jeker
- Department of Medical Oncology, Inselspital, Bern University Hospital, Bern, Switzerland
| | - Ursula Amstutz
- Center of Laboratory Medicine (ZLM)/University Institute of Clinical Chemistry, Inselspital, Bern University Hospital, Bern, Switzerland
| | - Thomas Pabst
- Department of Medical Oncology, Inselspital, Bern University Hospital, Bern, Switzerland
| | - Ulrike Bacher
- University Department of Hematology and Central Hematology Laboratory, Inselspital, Bern University Hospital, Bern, Switzerland
- Center of Laboratory Medicine (ZLM)/University Institute of Clinical Chemistry, Inselspital, Bern University Hospital, Bern, Switzerland
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12
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Shumilov E, Flach J, Joncourt R, Porret N, Wiedemann G, Angelillo‐Scherrer A, Trümper L, Fiedler M, Jeker B, Amstutz U, Pabst T, Bacher U. Critical evaluation of current molecular MRD strategies including NGS for the management of AML patients with multiple mutations. Hematol Oncol 2019; 37:319-322. [DOI: 10.1002/hon.2603] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2018] [Revised: 02/11/2019] [Accepted: 03/01/2019] [Indexed: 01/29/2023]
Affiliation(s)
- Evgenii Shumilov
- Department of Hematology and Medical OncologyUniversity Medicine Göttingen (UMG) Göttingen Germany
| | - Johanna Flach
- Department of Hematology and OncologyMedical Faculty Mannheim of the Heidelberg University Mannheim Germany
| | - Raphael Joncourt
- University Department of Hematology and Central Hematology LaboratoryInselspital, Bern University Hospital Bern Switzerland
| | - Naomi Porret
- University Department of Hematology and Central Hematology LaboratoryInselspital, Bern University Hospital Bern Switzerland
| | - Gertrud Wiedemann
- University Department of Hematology and Central Hematology LaboratoryInselspital, Bern University Hospital Bern Switzerland
| | - Anne Angelillo‐Scherrer
- University Department of Hematology and Central Hematology LaboratoryInselspital, Bern University Hospital Bern Switzerland
| | - Lorenz Trümper
- Department of Hematology and Medical OncologyUniversity Medicine Göttingen (UMG) Göttingen Germany
| | - Martin Fiedler
- Center of Laboratory Medicine (ZLM)/University Institute of Clinical ChemistryInselspital, Bern University Hospital Bern Switzerland
| | - Barbara Jeker
- Department of Medical OncologyInselspital, Bern University Hospital Bern Switzerland
| | - Ursula Amstutz
- Center of Laboratory Medicine (ZLM)/University Institute of Clinical ChemistryInselspital, Bern University Hospital Bern Switzerland
| | - Thomas Pabst
- Department of Medical OncologyInselspital, Bern University Hospital Bern Switzerland
| | - Ulrike Bacher
- University Department of Hematology and Central Hematology LaboratoryInselspital, Bern University Hospital Bern Switzerland
- Center of Laboratory Medicine (ZLM)/University Institute of Clinical ChemistryInselspital, Bern University Hospital Bern Switzerland
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13
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Bacher U, Shumilov E, Flach J, Porret N, Joncourt R, Wiedemann G, Fiedler M, Novak U, Amstutz U, Pabst T. Challenges in the introduction of next-generation sequencing (NGS) for diagnostics of myeloid malignancies into clinical routine use. Blood Cancer J 2018; 8:113. [PMID: 30420667 PMCID: PMC6232163 DOI: 10.1038/s41408-018-0148-6] [Citation(s) in RCA: 72] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2018] [Revised: 09/17/2018] [Accepted: 10/15/2018] [Indexed: 12/20/2022] Open
Abstract
Given the vast phenotypic and genetic heterogeneity of acute and chronic myeloid malignancies, hematologists have eagerly awaited the introduction of next-generation sequencing (NGS) into the routine diagnostic armamentarium to enable a more differentiated disease classification, risk stratification, and improved therapeutic decisions. At present, an increasing number of hematologic laboratories are in the process of integrating NGS procedures into the diagnostic algorithms of patients with acute myeloid leukemia (AML), myelodysplastic syndromes (MDS), and myeloproliferative neoplasms (MPNs). Inevitably accompanying such developments, physicians and molecular biologists are facing unexpected challenges regarding the interpretation and implementation of molecular genetic results derived from NGS in myeloid malignancies. This article summarizes typical challenges that may arise in the context of NGS-based analyses at diagnosis and during follow-up of myeloid malignancies.
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Affiliation(s)
- Ulrike Bacher
- Department of Hematology and Central Hematology Laboratory, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland.
- Center for Laboratory Medicine (ZLM)/University Institute of Clinical Chemistry, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland.
| | - Evgenii Shumilov
- Department of Hematology and Medical Oncology, University Medicine Göttingen (UMG), Göttingen, Germany
| | - Johanna Flach
- Department of Hematology and Oncology, Medical Faculty Mannheim of the Heidelberg University, Mannheim, Germany
| | - Naomi Porret
- Department of Hematology and Central Hematology Laboratory, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Raphael Joncourt
- Department of Hematology and Central Hematology Laboratory, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Gertrud Wiedemann
- Department of Hematology and Central Hematology Laboratory, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Martin Fiedler
- Center for Laboratory Medicine (ZLM)/University Institute of Clinical Chemistry, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Urban Novak
- Department of Medical Oncology, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Ursula Amstutz
- Center for Laboratory Medicine (ZLM)/University Institute of Clinical Chemistry, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Thomas Pabst
- Department of Medical Oncology, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland.
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14
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Hoernstein SNW, Fode B, Wiedemann G, Lang D, Niederkrüger H, Berg B, Schaaf A, Frischmuth T, Schlosser A, Decker EL, Reski R. Host Cell Proteome of Physcomitrella patens Harbors Proteases and Protease Inhibitors under Bioproduction Conditions. J Proteome Res 2018; 17:3749-3760. [PMID: 30226384 DOI: 10.1021/acs.jproteome.8b00423] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Host cell proteins are inevitable contaminants of biopharmaceuticals. Here, we performed detailed analyses of the host cell proteome of moss ( Physcomitrella patens) bioreactor supernatants using mass spectrometry and subsequent bioinformatics analysis. Distinguishing between the apparent secretome and intracellular contaminants, a complex extracellular proteolytic network including subtilisin-like proteases, metallo-proteases, and aspartic proteases was identified. Knockout of a subtilisin-like protease affected the overall extracellular proteolytic activity. Besides proteases, also secreted protease-inhibiting proteins such as serpins were identified. Further, we confirmed predicted cleavage sites of 40 endogenous signal peptides employing an N-terminomics approach. The present data provide novel aspects to optimize both product stability of recombinant biopharmaceuticals as well as their maturation along the secretory pathway. Data are available via ProteomeXchange with identifier PXD009517.
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Affiliation(s)
- Sebastian N W Hoernstein
- Plant Biotechnology, Faculty of Biology , University of Freiburg , Schaenzlestrasse 1 , D-79104 Freiburg , Germany
| | - Benjamin Fode
- Greenovation Biotech GmbH , Hans-Bunte-Strasse 19 , D-79108 Freiburg , Germany
| | - Gertrud Wiedemann
- Plant Biotechnology, Faculty of Biology , University of Freiburg , Schaenzlestrasse 1 , D-79104 Freiburg , Germany
| | - Daniel Lang
- Plant Biotechnology, Faculty of Biology , University of Freiburg , Schaenzlestrasse 1 , D-79104 Freiburg , Germany.,Plant Genome and System Biology , Helmholtz Center Munich , D-85764 Neuherberg , Germany
| | - Holger Niederkrüger
- Greenovation Biotech GmbH , Hans-Bunte-Strasse 19 , D-79108 Freiburg , Germany
| | - Birgit Berg
- Greenovation Biotech GmbH , Hans-Bunte-Strasse 19 , D-79108 Freiburg , Germany
| | - Andreas Schaaf
- Greenovation Biotech GmbH , Hans-Bunte-Strasse 19 , D-79108 Freiburg , Germany
| | - Thomas Frischmuth
- Greenovation Biotech GmbH , Hans-Bunte-Strasse 19 , D-79108 Freiburg , Germany
| | - Andreas Schlosser
- Rudolf-Virchow-Center for Experimental Biomedicine , University of Wuerzburg , D-97080 Wuerzburg , Germany
| | - Eva L Decker
- Plant Biotechnology, Faculty of Biology , University of Freiburg , Schaenzlestrasse 1 , D-79104 Freiburg , Germany
| | - Ralf Reski
- Plant Biotechnology, Faculty of Biology , University of Freiburg , Schaenzlestrasse 1 , D-79104 Freiburg , Germany.,BIOSS - Centre for Biological Signalling Studies , University of Freiburg , D-79104 Freiburg , Germany
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15
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Steinhoff J, Feddersen A, Wood WG, Hoyer J, Bein G, Wiedemann G, Fricke L, Sack K. β2
-Microglobulinuria as an early sign of cytomegalovirus infection following renal transplantation. Transpl Int 2018. [DOI: 10.1111/tri.1992.5.s1.300] [Citation(s) in RCA: 2] [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: 11/27/2022]
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16
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Bacher U, Porret N, Joncourt R, Sanz J, Aliu N, Wiedemann G, Jeker B, Banz Y, Pabst T. Pitfalls in the molecular follow up of NPM1 mutant acute myeloid leukemia. Haematologica 2018; 103:e486-e488. [PMID: 29903758 DOI: 10.3324/haematol.2018.192104] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Affiliation(s)
- Ulrike Bacher
- Department of Hematology, Inselspital, Bern University Hospital, University of Bern, Switzerland.,Center of Laboratory Medicine (ZLM) Inselspital, Bern University Hospital, University of Bern, Switzerland
| | - Naomi Porret
- Department of Hematology, Inselspital, Bern University Hospital, University of Bern, Switzerland
| | - Raphael Joncourt
- Department of Hematology, Inselspital, Bern University Hospital, University of Bern, Switzerland
| | - Javier Sanz
- Division of Human Genetics, Department of Pediatrics, Inselspital, Bern University Hospital, University of Bern, Switzerland
| | - Nijas Aliu
- Division of Human Genetics, Department of Pediatrics, Inselspital, Bern University Hospital, University of Bern, Switzerland
| | - Gertrud Wiedemann
- Department of Hematology, Inselspital, Bern University Hospital, University of Bern, Switzerland
| | - Barbara Jeker
- Department of Medical Oncology, Inselspital, Bern University Hospital, Switzerland
| | - Yara Banz
- Institute of Pathology, University of Bern, Switzerland
| | - Thomas Pabst
- Department of Medical Oncology, Inselspital, Bern University Hospital, Switzerland
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17
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Toplak M, Wiedemann G, Ulićević J, Daniel B, Hoernstein SNW, Kothe J, Niederhauser J, Reski R, Winkler A, Macheroux P. The single berberine bridge enzyme homolog of Physcomitrella patens is a cellobiose oxidase. FEBS J 2018; 285:1923-1943. [PMID: 29633551 PMCID: PMC6001459 DOI: 10.1111/febs.14458] [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] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2018] [Revised: 03/17/2018] [Accepted: 03/29/2018] [Indexed: 11/28/2022]
Abstract
The berberine bridge enzyme from the California poppy Eschscholzia californica (EcBBE) catalyzes the oxidative cyclization of (S)‐reticuline to (S)‐scoulerine, that is, the formation of the berberine bridge in the biosynthesis of benzylisoquinoline alkaloids. Interestingly, a large number of BBE‐like genes have been identified in plants that lack alkaloid biosynthesis. This finding raised the question of the primordial role of BBE in the plant kingdom, which prompted us to investigate the closest relative of EcBBE in Physcomitrella patens (PpBBE1), the most basal plant harboring a BBE‐like gene. Here, we report the biochemical, structural, and in vivo characterization of PpBBE1. Our studies revealed that PpBBE1 is structurally and biochemically very similar to EcBBE. In contrast to EcBBE, we found that PpBBE1 catalyzes the oxidation of the disaccharide cellobiose to the corresponding lactone, that is, PpBBE1 is a cellobiose oxidase. The enzymatic reaction mechanism was characterized by a structure‐guided mutagenesis approach that enabled us to assign a catalytic role to amino acid residues in the active site of PpBBE1. In vivo experiments revealed the highest level of PpBBE1 expression in chloronema, the earliest stage of the plant's life cycle, where carbon metabolism is strongly upregulated. It was also shown that the enzyme is secreted to the extracellular space, where it may be involved in later steps of cellulose degradation, thereby allowing the moss to make use of cellulose for energy production. Overall, our results suggest that the primordial role of BBE‐like enzymes in plants revolved around primary metabolic reactions in carbohydrate utilization. Database Structural data are available in the PDB under the accession numbers 6EO4 and 6EO5.
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Affiliation(s)
- Marina Toplak
- Institute of Biochemistry, Graz University of Technology, Austria
| | - Gertrud Wiedemann
- Plant Biotechnology, Faculty of Biology, University of Freiburg, Germany
| | - Jelena Ulićević
- Institute of Biochemistry, Graz University of Technology, Austria
| | - Bastian Daniel
- Institute of Biochemistry, Graz University of Technology, Austria
| | | | - Jennifer Kothe
- Plant Biotechnology, Faculty of Biology, University of Freiburg, Germany
| | | | - Ralf Reski
- Plant Biotechnology, Faculty of Biology, University of Freiburg, Germany.,BIOSS Centre for Biological Signalling Studies, University of Freiburg, Germany
| | - Andreas Winkler
- Institute of Biochemistry, Graz University of Technology, Austria
| | - Peter Macheroux
- Institute of Biochemistry, Graz University of Technology, Austria
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18
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Wiedemann G, van Gessel N, Köchl F, Hunn L, Schulze K, Maloukh L, Nogué F, Decker EL, Hartung F, Reski R. RecQ Helicases Function in Development, DNA Repair, and Gene Targeting in Physcomitrella patens. Plant Cell 2018; 30:717-736. [PMID: 29514942 PMCID: PMC5894843 DOI: 10.1105/tpc.17.00632] [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] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2017] [Revised: 02/16/2018] [Accepted: 03/06/2018] [Indexed: 05/18/2023]
Abstract
RecQ DNA helicases are genome surveillance proteins found in all kingdoms of life. They are characterized best in humans, as mutations in RecQ genes lead to developmental abnormalities and diseases. To better understand RecQ functions in plants we concentrated on Arabidopsis thaliana and Physcomitrella patens, the model species predominantly used for studies on DNA repair and gene targeting. Phylogenetic analysis of the six P. patens RecQ genes revealed their orthologs in humans and plants. Because Arabidopsis and P. patens differ in their RecQ4 and RecQ6 genes, reporter and deletion moss mutants were generated and gene functions studied in reciprocal cross-species and cross-kingdom approaches. Both proteins can be found in meristematic moss tissues, although at low levels and with distinct expression patterns. PpRecQ4 is involved in embryogenesis and in subsequent development as demonstrated by sterility of ΔPpRecQ4 mutants and by morphological aberrations. Additionally, ΔPpRecQ4 displays an increased sensitivity to DNA damages and an increased rate of gene targeting. Therefore, we conclude that PpRecQ4 acts as a repressor of recombination. In contrast, PpRecQ6 is not obviously important for moss development or DNA repair but does function as a potent enhancer of gene targeting.
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Affiliation(s)
- Gertrud Wiedemann
- Plant Biotechnology, Faculty of Biology, University of Freiburg, 79104 Freiburg, Germany
| | - Nico van Gessel
- Plant Biotechnology, Faculty of Biology, University of Freiburg, 79104 Freiburg, Germany
| | - Fabian Köchl
- Plant Biotechnology, Faculty of Biology, University of Freiburg, 79104 Freiburg, Germany
| | - Lisa Hunn
- Plant Biotechnology, Faculty of Biology, University of Freiburg, 79104 Freiburg, Germany
| | - Katrin Schulze
- Julius Kuehn Institute, Institute for Biosafety in Plant Biotechnology, 06484 Quedlinburg, Germany
| | - Lina Maloukh
- Institut Jean-Pierre Bourgin, INRA, AgroParisTech, CNRS, Université Paris-Saclay, 78000 Versailles, France
| | - Fabien Nogué
- Institut Jean-Pierre Bourgin, INRA, AgroParisTech, CNRS, Université Paris-Saclay, 78000 Versailles, France
| | - Eva L Decker
- Plant Biotechnology, Faculty of Biology, University of Freiburg, 79104 Freiburg, Germany
| | - Frank Hartung
- Julius Kuehn Institute, Institute for Biosafety in Plant Biotechnology, 06484 Quedlinburg, Germany
| | - Ralf Reski
- Plant Biotechnology, Faculty of Biology, University of Freiburg, 79104 Freiburg, Germany
- BIOSS Centre for Biological Signalling Studies, University of Freiburg, 79104 Freiburg, Germany
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19
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Weber R, Herrlich J, Wiedemann G, Wölwer W, Buchkremer G, Klingberg S, Wittorf A. Therapieakzeptanz und Therapiebeziehung in der frühen Phase der Verhaltenstherapie bei Negativsymptomatik der Schizophrenie. ACTA ACUST UNITED AC 2018. [DOI: 10.1055/s-0038-1627233] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
ZusammenfassungGegenstand und Ziel: Die Studie überprüfte die Durchführbarkeit und Akzeptanz einer ambulanten kognitiven Verhaltenstherapie bei Negativsymptomatik der Schizophrenie. Ein zusätzlicher Fokus lag auf der Analyse der therapeutischen Beziehung (TB) und deren Vorhersage aus klinisch- psychopathologischen Merkmalen. Material und Methoden: 49 Patienten mit Schizophrenie wurden randomisiert entweder einer kognitiven Verhaltenstherapie (KVT; Experimentalgruppe) oder einer kognitiven Remediation (KR; Kontrollgruppe) zugewiesen. Die Sitzungen wurden anhand von Stundenprotokollen und Patienten- bzw. Therapeutenstundenbögen dokumentiert. Analysiert wurde die frühe Therapiephase. Ergebnisse: Die Stundenprotokolle zeigten, dass die Therapeuten die KVT manualgetreu durchführen konnten. Die Analysen der Stundenbögen erbrachten, dass die Patienten die TB in der KVT als positiv und besser als in der KR beurteilten. Patienten- und Therapeuteneinschätzungen der TB zeigten keine Korrelation. Eine mildere Positivsymptomatik war mit einer besseren Beurteilung der TB durch den Patienten assoziiert. Eine stärkere Negativsymptomatik prädizierte eine ungünstigere Beurteilung der TB durch den Therapeuten. Schlussfolgerungen und klinische Relevanz: Die Studie ist ein erster Indikator für die Durchführbarkeit und Akzeptanz der KVT bei Negativsymptomatik. Positiv- und Negativsymptomatik bergen Implikationen für die Entwicklung der TB.
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20
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Decker EL, Alder A, Hunn S, Ferguson J, Lehtonen MT, Scheler B, Kerres KL, Wiedemann G, Safavi-Rizi V, Nordzieke S, Balakrishna A, Baz L, Avalos J, Valkonen JPT, Reski R, Al-Babili S. Strigolactone biosynthesis is evolutionarily conserved, regulated by phosphate starvation and contributes to resistance against phytopathogenic fungi in a moss, Physcomitrella patens. New Phytol 2017; 216:455-468. [PMID: 28262967 DOI: 10.1111/nph.14506] [Citation(s) in RCA: 76] [Impact Index Per Article: 10.9] [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: 01/13/2017] [Accepted: 01/31/2017] [Indexed: 05/18/2023]
Abstract
In seed plants, strigolactones (SLs) regulate architecture and induce mycorrhizal symbiosis in response to environmental cues. SLs are formed by combined activity of the carotenoid cleavage dioxygenases (CCDs) 7 and 8 from 9-cis-β-carotene, leading to carlactone that is converted by cytochromes P450 (clade 711; MAX1 in Arabidopsis) into various SLs. As Physcomitrella patens possesses CCD7 and CCD8 homologs but lacks MAX1, we investigated if PpCCD7 together with PpCCD8 form carlactone and how deletion of these enzymes influences growth and interactions with the environment. We investigated the enzymatic activity of PpCCD7 and PpCCD8 in vitro, identified the formed products by high performance liquid chromatography (HPLC) and LC-MS, and generated and analysed ΔCCD7 and ΔCCD8 mutants. We defined enzymatic activity of PpCCD7 as a stereospecific 9-cis-CCD and PpCCD8 as a carlactone synthase. ΔCCD7 and ΔCCD8 lines showed enhanced caulonema growth, which was revertible by adding the SL analogue GR24 or carlactone. Wild-type (WT) exudates induced seed germination in Orobanche ramosa. This activity was increased upon phosphate starvation and abolished in exudates of both mutants. Furthermore, both mutants showed increased susceptibility to phytopathogenic fungi. Our study reveals the deep evolutionary conservation of SL biosynthesis, SL function, and its regulation by biotic and abiotic cues.
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Affiliation(s)
- Eva L Decker
- Plant Biotechnology, Faculty of Biology, University of Freiburg, Schaenzlestr. 1, Freiburg, 79104, Germany
| | - Adrian Alder
- Cell Biology, Faculty of Biology, University of Freiburg, Schaenzlestr. 1, Freiburg, 79104, Germany
| | - Stefan Hunn
- Plant Biotechnology, Faculty of Biology, University of Freiburg, Schaenzlestr. 1, Freiburg, 79104, Germany
| | - Jenny Ferguson
- Plant Biotechnology, Faculty of Biology, University of Freiburg, Schaenzlestr. 1, Freiburg, 79104, Germany
| | - Mikko T Lehtonen
- Department of Agricultural Sciences, University of Helsinki, Latokartanonkaari 7, Helsinki, FIN-00014, Finland
| | - Bjoern Scheler
- Plant Biotechnology, Faculty of Biology, University of Freiburg, Schaenzlestr. 1, Freiburg, 79104, Germany
| | - Klaus L Kerres
- Plant Biotechnology, Faculty of Biology, University of Freiburg, Schaenzlestr. 1, Freiburg, 79104, Germany
| | - Gertrud Wiedemann
- Plant Biotechnology, Faculty of Biology, University of Freiburg, Schaenzlestr. 1, Freiburg, 79104, Germany
| | - Vajiheh Safavi-Rizi
- Cell Biology, Faculty of Biology, University of Freiburg, Schaenzlestr. 1, Freiburg, 79104, Germany
| | - Steffen Nordzieke
- Departamento de Genética, Facultad de Biología, Universidad de Sevilla, Seville, E-41080, Spain
| | - Aparna Balakrishna
- BESE Division, Plant Science Program, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
| | - Lina Baz
- BESE Division, Plant Science Program, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
| | - Javier Avalos
- Departamento de Genética, Facultad de Biología, Universidad de Sevilla, Seville, E-41080, Spain
| | - Jari P T Valkonen
- Department of Agricultural Sciences, University of Helsinki, Latokartanonkaari 7, Helsinki, FIN-00014, Finland
| | - Ralf Reski
- Plant Biotechnology, Faculty of Biology, University of Freiburg, Schaenzlestr. 1, Freiburg, 79104, Germany
- FRIAS - Freiburg Institute for Advanced Studies, University of Freiburg, Freiburg, 79104, Germany
- BIOSS - Centre for Biological Signalling Studies, University of Freiburg, Freiburg, 79104, Germany
| | - Salim Al-Babili
- Cell Biology, Faculty of Biology, University of Freiburg, Schaenzlestr. 1, Freiburg, 79104, Germany
- BESE Division, Plant Science Program, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
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21
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Renault H, Alber A, Horst NA, Basilio Lopes A, Fich EA, Kriegshauser L, Wiedemann G, Ullmann P, Herrgott L, Erhardt M, Pineau E, Ehlting J, Schmitt M, Rose JKC, Reski R, Werck-Reichhart D. A phenol-enriched cuticle is ancestral to lignin evolution in land plants. Nat Commun 2017; 8:14713. [PMID: 28270693 PMCID: PMC5344971 DOI: 10.1038/ncomms14713] [Citation(s) in RCA: 112] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2016] [Accepted: 01/24/2017] [Indexed: 12/22/2022] Open
Abstract
Lignin, one of the most abundant biopolymers on Earth, derives from the plant phenolic metabolism. It appeared upon terrestrialization and is thought critical for plant colonization of land. Early diverging land plants do not form lignin, but already have elements of its biosynthetic machinery. Here we delete in a moss the P450 oxygenase that defines the entry point in angiosperm lignin metabolism, and find that its pre-lignin pathway is essential for development. This pathway does not involve biochemical regulation via shikimate coupling, but instead is coupled with ascorbate catabolism, and controls the synthesis of the moss cuticle, which prevents desiccation and organ fusion. These cuticles share common features with lignin, cutin and suberin, and may represent the extant representative of a common ancestor. Our results demonstrate a critical role for the ancestral phenolic metabolism in moss erect growth and cuticle permeability, consistent with importance in plant adaptation to terrestrial conditions. The phenolic polymer lignin is thought to have contributed to adaptation of early land plants to terrestrial environments. Here Renault et al. show that moss, which does not produce lignin, contains an ancestral phenolic metabolism pathway that produces a phenol-enriched cuticle and prevents desiccation.
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Affiliation(s)
- Hugues Renault
- University of Strasbourg, Institute of Plant Molecular Biology, Centre National de la Recherche Scientifique, 12 rue du Général Zimmer, 67000 Strasbourg, France.,Faculty of Biology, Chair of Plant Biotechnology, University of Freiburg, Schaenzlestrasse 1, 79104 Freiburg, Germany.,University of Strasbourg Institute for Advanced Study, 5 allée du Général Rouvillois, 67000 Strasbourg, France.,Freiburg Institute for Advanced Studies, University of Freiburg, Albertstraße 19, 79104 Freiburg, Germany
| | - Annette Alber
- University of Strasbourg, Institute of Plant Molecular Biology, Centre National de la Recherche Scientifique, 12 rue du Général Zimmer, 67000 Strasbourg, France.,Department of Biology &Centre for Forest Biology, University of Victoria, British Columbia, Canada V8P 5C2
| | - Nelly A Horst
- Faculty of Biology, Chair of Plant Biotechnology, University of Freiburg, Schaenzlestrasse 1, 79104 Freiburg, Germany
| | - Alexandra Basilio Lopes
- Laboratoire d'Innovation Thérapeutique, UMR CNRS 7200, Université de Strasbourg, 74 route du Rhin, 67401 Illkirch, France
| | - Eric A Fich
- Plant Biology Section, School of Integrative Plant Science, Cornell University, Ithaca, New York 14853, USA
| | - Lucie Kriegshauser
- University of Strasbourg, Institute of Plant Molecular Biology, Centre National de la Recherche Scientifique, 12 rue du Général Zimmer, 67000 Strasbourg, France
| | - Gertrud Wiedemann
- Faculty of Biology, Chair of Plant Biotechnology, University of Freiburg, Schaenzlestrasse 1, 79104 Freiburg, Germany
| | - Pascaline Ullmann
- University of Strasbourg, Institute of Plant Molecular Biology, Centre National de la Recherche Scientifique, 12 rue du Général Zimmer, 67000 Strasbourg, France
| | - Laurence Herrgott
- University of Strasbourg, Institute of Plant Molecular Biology, Centre National de la Recherche Scientifique, 12 rue du Général Zimmer, 67000 Strasbourg, France
| | - Mathieu Erhardt
- University of Strasbourg, Institute of Plant Molecular Biology, Centre National de la Recherche Scientifique, 12 rue du Général Zimmer, 67000 Strasbourg, France
| | - Emmanuelle Pineau
- University of Strasbourg, Institute of Plant Molecular Biology, Centre National de la Recherche Scientifique, 12 rue du Général Zimmer, 67000 Strasbourg, France
| | - Jürgen Ehlting
- Department of Biology &Centre for Forest Biology, University of Victoria, British Columbia, Canada V8P 5C2
| | - Martine Schmitt
- Laboratoire d'Innovation Thérapeutique, UMR CNRS 7200, Université de Strasbourg, 74 route du Rhin, 67401 Illkirch, France
| | - Jocelyn K C Rose
- Plant Biology Section, School of Integrative Plant Science, Cornell University, Ithaca, New York 14853, USA
| | - Ralf Reski
- Faculty of Biology, Chair of Plant Biotechnology, University of Freiburg, Schaenzlestrasse 1, 79104 Freiburg, Germany.,University of Strasbourg Institute for Advanced Study, 5 allée du Général Rouvillois, 67000 Strasbourg, France.,Freiburg Institute for Advanced Studies, University of Freiburg, Albertstraße 19, 79104 Freiburg, Germany.,BIOSS - Centre for Biological Signalling Studies, 79104 Freiburg, Germany
| | - Danièle Werck-Reichhart
- University of Strasbourg, Institute of Plant Molecular Biology, Centre National de la Recherche Scientifique, 12 rue du Général Zimmer, 67000 Strasbourg, France.,University of Strasbourg Institute for Advanced Study, 5 allée du Général Rouvillois, 67000 Strasbourg, France.,Freiburg Institute for Advanced Studies, University of Freiburg, Albertstraße 19, 79104 Freiburg, Germany
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22
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Yaari R, Noy-Malka C, Wiedemann G, Auerbach Gershovitz N, Reski R, Katz A, Ohad N. DNA METHYLTRANSFERASE 1 is involved in (m)CG and (m)CCG DNA methylation and is essential for sporophyte development in Physcomitrella patens. Plant Mol Biol 2015; 88:387-400. [PMID: 25944663 DOI: 10.1007/s11103-015-0328-8] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2015] [Accepted: 04/29/2015] [Indexed: 05/10/2023]
Abstract
DNA methylation has a crucial role in plant development regulating gene expression and silencing of transposable elements. Maintenance DNA methylation in plants occurs at symmetrical (m)CG and (m)CHG contexts ((m) = methylated) and is maintained by DNA METHYLTRANSFERASE 1 (MET1) and CHROMOMETHYLASE (CMT) DNA methyltransferase protein families, respectively. While angiosperm genomes encode for several members of MET1 and CMT families, the moss Physcomitrella patens, serving as a model for early divergent land plants, carries a single member of each family. To determine the function of P. patens PpMET we generated ΔPpmet deletion mutant which lost (m)CG and unexpectedly (m)CCG methylation at loci tested. In order to evaluate the extent of (m)CCG methylation by MET1, we reexamined the Arabidopsis thaliana Atmet1 mutant methylome and found a similar pattern of methylation loss, suggesting that maintenance of DNA methylation by MET1 is conserved through land plant evolution. While ΔPpmet displayed no phenotypic alterations during its gametophytic phase, it failed to develop sporophytes, indicating that PpMET plays a role in gametogenesis or early sporophyte development. Expression array analysis revealed that the deletion of PpMET resulted in upregulation of two genes and multiple repetitive sequences. In parallel, expression analysis of the previously reported ΔPpcmt mutant showed that lack of PpCMT triggers overexpression of genes. This overexpression combined with loss of (m)CHG and its pleiotropic phenotype, implies that PpCMT has an essential evolutionary conserved role in the epigenetic control of gene expression. Collectively, our results suggest functional conservation of MET1 and CMT families during land plant evolution. A model describing the relationship between MET1 and CMT in CCG methylation is presented.
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Affiliation(s)
- Rafael Yaari
- Department of Molecular Biology and Ecology of Plants, Tel-Aviv University, 69978, Tel Aviv, Israel
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23
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Decker EL, Wiedemann G, Reski R. Gene Targeting for Precision Glyco-Engineering: Production of Biopharmaceuticals Devoid of Plant-Typical Glycosylation in Moss Bioreactors. Methods Mol Biol 2015; 1321:213-24. [PMID: 26082225 DOI: 10.1007/978-1-4939-2760-9_15] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2022]
Abstract
One of the main challenges for the production of biopharmaceuticals in plant-based systems is the modulation of plant-specific glycosylation patterns towards a humanized form. Posttranslational modifications in plants are similar to those in humans, but several differences affect product quality and efficacy and can also cause immune responses in patients. In the moss Physcomitrella patens highly efficient gene targeting via homologous recombination enables glyco-engineering to obtain suitable platform lines for the production of recombinant proteins and biopharmaceuticals. Here we describe the methods which are effective for creating gene targeting constructs and transgenic moss lines as well as confirming successful homologous integration of the constructs and modification of target gene expression.
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Affiliation(s)
- Eva L Decker
- Plant Biotechnology, Faculty of Biology, University of Freiburg, Freiburg, Germany
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24
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Beike AK, Lang D, Zimmer AD, Wüst F, Trautmann D, Wiedemann G, Beyer P, Decker EL, Reski R. Insights from the cold transcriptome of Physcomitrella patens: global specialization pattern of conserved transcriptional regulators and identification of orphan genes involved in cold acclimation. New Phytol 2015; 205:869-81. [PMID: 25209349 PMCID: PMC4301180 DOI: 10.1111/nph.13004] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [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: 04/23/2014] [Accepted: 07/17/2014] [Indexed: 05/21/2023]
Abstract
The whole-genome transcriptomic cold stress response of the moss Physcomitrella patens was analyzed and correlated with phenotypic and metabolic changes. Based on time-series microarray experiments and quantitative real-time polymerase chain reaction, we characterized the transcriptomic changes related to early stress signaling and the initiation of cold acclimation. Transcription-associated protein (TAP)-encoding genes of P. patens and Arabidopsis thaliana were classified using generalized linear models. Physiological responses were monitored with pulse-amplitude-modulated fluorometry, high-performance liquid chromatography and targeted high-performance mass spectrometry. The transcript levels of 3220 genes were significantly affected by cold. Comparative classification revealed a global specialization of TAP families, a transcript accumulation of transcriptional regulators of the stimulus/stress response and a transcript decline of developmental regulators. Although transcripts of the intermediate to later response are from evolutionarily conserved genes, the early response is dominated by species-specific genes. These orphan genes may encode as yet unknown acclimation processes.
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Affiliation(s)
- Anna K Beike
- Plant Biotechnology, Faculty of Biology, University of FreiburgSchänzlestraße 1, D-79104, Freiburg, Germany
| | - Daniel Lang
- Plant Biotechnology, Faculty of Biology, University of FreiburgSchänzlestraße 1, D-79104, Freiburg, Germany
| | - Andreas D Zimmer
- Plant Biotechnology, Faculty of Biology, University of FreiburgSchänzlestraße 1, D-79104, Freiburg, Germany
- Institut für Humangenetik, Universitätsklinikum FreiburgBreisacherstr. 33, D-79106, Freiburg, Germany
| | - Florian Wüst
- Cell Biology, Faculty of Biology, University of FreiburgSchänzlestraße 1, D-79104, Freiburg, Germany
| | - Danika Trautmann
- Cell Biology, Faculty of Biology, University of FreiburgSchänzlestraße 1, D-79104, Freiburg, Germany
- Institut National de la Recherche Agronomique28 rue de Herrlisheim, F-68021, Colmar, France
| | - Gertrud Wiedemann
- Plant Biotechnology, Faculty of Biology, University of FreiburgSchänzlestraße 1, D-79104, Freiburg, Germany
| | - Peter Beyer
- Cell Biology, Faculty of Biology, University of FreiburgSchänzlestraße 1, D-79104, Freiburg, Germany
| | - Eva L Decker
- Plant Biotechnology, Faculty of Biology, University of FreiburgSchänzlestraße 1, D-79104, Freiburg, Germany
| | - Ralf Reski
- Plant Biotechnology, Faculty of Biology, University of FreiburgSchänzlestraße 1, D-79104, Freiburg, Germany
- FRISYS - Freiburg Initiative for Systems Biology79104, Freiburg, Germany
- BIOSS–Centre for Biological Signaling Studies79104, Freiburg, Germany
- FRIAS– Freiburg Institute for Advanced Studies79104, Freiburg, Germany
- TIP–Trinational Institute for Plant Research79104, Freiburg, Germany
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25
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Morath V, Truong DJJ, Albrecht F, Polte I, Ciccone RA, Funke LF, Reichart L, Wolf CG, Brunner AD, Fischer K, Schneider PC, Brüggenthies JB, Fröhlich F, Wiedemann G, Reski R, Skerra A. Design and characterization of a modular membrane protein anchor to functionalize the moss Physcomitrella patens with extracellular catalytic and/or binding activities. ACS Synth Biol 2014; 3:990-4. [PMID: 25524107 DOI: 10.1021/sb5000302] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Heterologous enzymes and binding proteins were secreted by the moss Physcomitrella patens or anchored extracellularly on its cell membrane in order to functionalize the apoplast as a biochemical reaction compartment. This modular membrane anchoring system utilizes the signal peptide and the transmembrane segment of the somatic embryogenesis receptor-like kinase (SERK), which were identified in a comprehensive bioinformatic analysis of the P. patens genome. By fusing the soluble enzyme NanoLuc luciferase to the signal peptide, its secretion capability was confirmed in vivo. The membrane localization of hybrid proteins comprising the SERK signal peptide, NanoLuc or other functional modules, the SERK transmembrane anchor, and a C-terminal GFP reporter was demonstrated using fluorescence microscopy as well as site-specific proteolytic release of the extracellular enzyme domain. Our membrane anchoring system enables the expression of various functional proteins in the apoplast of P. patens, empowering this photoautotrophic organism for biotechnological applications.
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Affiliation(s)
- Volker Morath
- Munich
Center for Integrated Protein Science (CIPS-M) and Lehrstuhl für
Biologische Chemie, Technische Universität München, 85350 Freising-Weihenstephan, Germany
| | - Dong-Jiunn Jeffery Truong
- Munich
Center for Integrated Protein Science (CIPS-M) and Lehrstuhl für
Biologische Chemie, Technische Universität München, 85350 Freising-Weihenstephan, Germany
| | - Florian Albrecht
- Munich
Center for Integrated Protein Science (CIPS-M) and Lehrstuhl für
Biologische Chemie, Technische Universität München, 85350 Freising-Weihenstephan, Germany
| | - Ingmar Polte
- Munich
Center for Integrated Protein Science (CIPS-M) and Lehrstuhl für
Biologische Chemie, Technische Universität München, 85350 Freising-Weihenstephan, Germany
| | - Rosario Adriano Ciccone
- Munich
Center for Integrated Protein Science (CIPS-M) and Lehrstuhl für
Biologische Chemie, Technische Universität München, 85350 Freising-Weihenstephan, Germany
| | - Louise Friederike Funke
- Munich
Center for Integrated Protein Science (CIPS-M) and Lehrstuhl für
Biologische Chemie, Technische Universität München, 85350 Freising-Weihenstephan, Germany
| | - Leonie Reichart
- Munich
Center for Integrated Protein Science (CIPS-M) and Lehrstuhl für
Biologische Chemie, Technische Universität München, 85350 Freising-Weihenstephan, Germany
| | - Christopher Guy Wolf
- Munich
Center for Integrated Protein Science (CIPS-M) and Lehrstuhl für
Biologische Chemie, Technische Universität München, 85350 Freising-Weihenstephan, Germany
| | - Andreas-David Brunner
- Munich
Center for Integrated Protein Science (CIPS-M) and Lehrstuhl für
Biologische Chemie, Technische Universität München, 85350 Freising-Weihenstephan, Germany
| | - Katrin Fischer
- Munich
Center for Integrated Protein Science (CIPS-M) and Lehrstuhl für
Biologische Chemie, Technische Universität München, 85350 Freising-Weihenstephan, Germany
| | - Philipp Constantin Schneider
- Munich
Center for Integrated Protein Science (CIPS-M) and Lehrstuhl für
Biologische Chemie, Technische Universität München, 85350 Freising-Weihenstephan, Germany
| | - Johanna Barbara Brüggenthies
- Munich
Center for Integrated Protein Science (CIPS-M) and Lehrstuhl für
Biologische Chemie, Technische Universität München, 85350 Freising-Weihenstephan, Germany
| | - Fabian Fröhlich
- Institute of Computational
Biology, Helmholtz Zentrum München, 85764 Neuherberg, Germany
| | - Gertrud Wiedemann
- Plant
Biotechnology, Faculty of Biology, University of Freiburg, 79104 Freiburg, Germany
| | - Ralf Reski
- Plant
Biotechnology, Faculty of Biology, University of Freiburg, 79104 Freiburg, Germany
- FRIAS, Freiburg Institute
for Advanced Studies, 79104 Freiburg, Germany
- BIOSS, Centre
for Biological Signalling Studies, 79104 Freiburg, Germany
| | - Arne Skerra
- Munich
Center for Integrated Protein Science (CIPS-M) and Lehrstuhl für
Biologische Chemie, Technische Universität München, 85350 Freising-Weihenstephan, Germany
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Hiss M, Laule O, Meskauskiene RM, Arif MA, Decker EL, Erxleben A, Frank W, Hanke ST, Lang D, Martin A, Neu C, Reski R, Richardt S, Schallenberg-Rüdinger M, Szövényi P, Tiko T, Wiedemann G, Wolf L, Zimmermann P, Rensing SA. Large-scale gene expression profiling data for the model moss Physcomitrella patens aid understanding of developmental progression, culture and stress conditions. Plant J 2014; 79:530-9. [PMID: 24889180 DOI: 10.1111/tpj.12572] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [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: 08/01/2013] [Revised: 05/22/2014] [Accepted: 05/27/2014] [Indexed: 05/21/2023]
Abstract
The moss Physcomitrella patens is an important model organism for studying plant evolution, development, physiology and biotechnology. Here we have generated microarray gene expression data covering the principal developmental stages, culture forms and some environmental/stress conditions. Example analyses of developmental stages and growth conditions as well as abiotic stress treatments demonstrate that (i) growth stage is dominant over culture conditions, (ii) liquid culture is not stressful for the plant, (iii) low pH might aid protoplastation by reduced expression of cell wall structure genes, (iv) largely the same gene pool mediates response to dehydration and rehydration, and (v) AP2/EREBP transcription factors play important roles in stress response reactions. With regard to the AP2 gene family, phylogenetic analysis and comparison with Arabidopsis thaliana shows commonalities as well as uniquely expressed family members under drought, light perturbations and protoplastation. Gene expression profiles for P. patens are available for the scientific community via the easy-to-use tool at https://www.genevestigator.com. By providing large-scale expression profiles, the usability of this model organism is further enhanced, for example by enabling selection of control genes for quantitative real-time PCR. Now, gene expression levels across a broad range of conditions can be accessed online for P. patens.
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Affiliation(s)
- Manuel Hiss
- Plant Cell Biology, Faculty of Biology, University of Marburg, Karl-von-Frisch-Strasse 8, 35043, Marburg, Germany; Faculty of Biology, University of Freiburg, Schänzlestrasse 1, 79104, Freiburg, Germany; FRISYS Freiburg Initiative for Systems Biology, University of Freiburg, 79104, Freiburg, Germany
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27
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Krug A, Cabanis M, Pyka M, Pauly K, Kellermann T, Walter H, Wagner M, Landsberg M, Shah NJ, Winterer G, Wölwer W, Brinkmeyer J, Müller BW, Kärgel C, Wiedemann G, Herrlich J, Vogeley K, Schilbach L, Rapp A, Klingberg S, Kircher T. Attenuated prefrontal activation during decision-making under uncertainty in schizophrenia: a multi-center fMRI study. Schizophr Res 2014; 152:176-83. [PMID: 24325976 DOI: 10.1016/j.schres.2013.11.007] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [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: 06/27/2013] [Revised: 11/04/2013] [Accepted: 11/11/2013] [Indexed: 10/25/2022]
Abstract
Decisions are called decisions under uncertainty when either prior information is incomplete or the outcomes of the decision are unclear. Alterations in these processes related to decisions under uncertainty have been linked to delusions. In patients with schizophrenia, the underlying neural networks have only rarely been studied. We aimed to disentangle the neural correlates of decision-making and relate them to neuropsychological and psychopathological parameters in a large sample of patients with schizophrenia and healthy subjects. Fifty-seven patients and fifty-seven healthy volunteers from six centers had to either indicate via button-press from which of two bottles red or blue balls were drawn (decision-making under uncertainty condition), or indicate whether eight red balls had been presented (baseline condition) while BOLD signal was measured with fMRI. Patients based their decisions on less conclusive evidence and had decreased activations in the underlying neural network, comprising of medial and lateral frontal as well as parietal areas, as compared to healthy subjects. While current psychopathology was not correlated with brain activation, positive symptoms led to longer decision latencies in patients. These results suggest that decision-making under uncertainty in schizophrenia is affected by a complex interplay of aberrant neural activation. Furthermore, reduced neuropsychological functioning in patients was related to impaired decision-making and task performance was modulated by distinct positive symptoms.
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Affiliation(s)
- A Krug
- Department of Psychiatry and Psychotherapy, Philipps University, Marburg, Germany.
| | - M Cabanis
- Department of Psychiatry and Psychotherapy, Philipps University, Marburg, Germany
| | - M Pyka
- Department of Psychiatry and Psychotherapy, Philipps University, Marburg, Germany
| | - K Pauly
- Department of Psychiatry, Psychotherapy and Psychosomatic Medicine, Medical School, RWTH Aachen University, Aachen, Germany
| | - T Kellermann
- Department of Psychiatry, Psychotherapy and Psychosomatic Medicine, Medical School, RWTH Aachen University, Aachen, Germany
| | - H Walter
- Department of Psychiatry and Psychotherapy, Campus Charité Mitte, Berlin, Germany
| | - M Wagner
- Department of Psychiatry and Psychotherapy, University of Bonn, Bonn, Germany
| | - M Landsberg
- Department of Psychiatry and Psychotherapy, University of Bonn, Bonn, Germany
| | - N J Shah
- Institute of Neuroscience and Medicine, Medical Imaging Physics (INM4), Research Centre Juelich, Germany; Department of Neurology, Faculty of Medicine, JARA, RWTH Aachen University, Aachen, Germany
| | - G Winterer
- Cologne Center for Genomics, University of Cologne, Köln, Germany
| | - W Wölwer
- Department of Psychiatry and Psychotherapy, Heinrich Heine University, Rhineland State Clinics for Psychiatry, Düsseldorf, Germany
| | - J Brinkmeyer
- Department of Psychiatry and Psychotherapy, Heinrich Heine University, Rhineland State Clinics for Psychiatry, Düsseldorf, Germany
| | - B W Müller
- LVR-Hospital Essen, Department of Psychiatry and Psychotherapy, Faculty of Medicine, University of Duisburg-Essen, Rhineland State Clinics for Psychiatry, Essen, Germany
| | - C Kärgel
- LVR-Hospital Essen, Department of Psychiatry and Psychotherapy, Faculty of Medicine, University of Duisburg-Essen, Rhineland State Clinics for Psychiatry, Essen, Germany
| | - G Wiedemann
- Clinic of Psychiatry and Psychotherapy, Clinical Center, Fulda, Germany
| | - J Herrlich
- Department of Psychiatry and Psychotherapy, Johann Wolfgang Goethe University, Frankfurt/Main, Germany
| | - K Vogeley
- Department of Psychiatry and Psychotherapy, University of Cologne, Köln, Germany; Institute for Neurosciences and Medicine, Cognitive Neuroscience (INM3), Research Center Juelich, Germany
| | - L Schilbach
- Department of Psychiatry and Psychotherapy, University of Cologne, Köln, Germany
| | - A Rapp
- Department of Psychiatry and Psychotherapy, Eberhard Karls University, Tübingen, Germany
| | - S Klingberg
- Department of Psychiatry and Psychotherapy, Eberhard Karls University, Tübingen, Germany
| | - T Kircher
- Department of Psychiatry and Psychotherapy, Philipps University, Marburg, Germany
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28
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Heits F, Katschinski D, Wiedemann G, Weiss C, Jelkmann W. Serum vascular endothelial growth factor (VEGF), a prognostic indicator in sarcoma and carcinoma patients. Int J Oncol 2013; 10:333-7. [PMID: 21533381 DOI: 10.3892/ijo.10.2.333] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
Tumor growth and the development of metastases are dependent on the local formation of new blood vessels. A major role in the induction of angiogenesis has been assigned to vascular endothelial growth factor (VEGF), a tumor cell-derived endothelium-specific mitogen. We studied whether blood levels of VEGF are increased in sarcoma and carcinoma patients. In addition, we tested whether data from measurements of serum VEGF are of prognostic value with respect to tumor remission during chemotherapy courses of sarcoma patients. First, we measured the concentration of VEGF in the sera of 60 normal volunteers and of 25 untreated patients suffering from solid tumors (13 sarcomas, 12 carcinomas). Second, we studied the level of serum VEGF in 9 tumor patients during 4 courses of ICE-chemotherapy (ifosfamide, carboplatin, etoposide). VEGF was measured by enzyme-linked immunoassay. The concentrations of serum VEGF were significantly higher (P <0.0001) in untreated sarcoma (933+/-132 pg/ml) and carcinoma (1,257+/-169 pg/ml) patients compared to those of normal subjects (239+/-21 pg/ml). The concentration of VEGF was roughly proportional to the tumor mass. A significant fall in serum VEGF occurred in the 6 patients who responded to chemotherapy with tumor remission but not in the patient who were resistant. The concentration of serum VEGF is an indicator of tumor growth in sarcoma and carcinoma patients and thus of prognostic value. Serum VEGF measurements may be clinically useful for monitoring tumor regression in sarcoma patients undergoing chemotherapy.
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Affiliation(s)
- F Heits
- UNIV LUBECK,DEPT PHYSIOL,D-23538 LUBECK,GERMANY. UNIV LUBECK,DEPT INTERNAL MED,D-2400 LUBECK,GERMANY
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29
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Kim SY, Colpitts CC, Wiedemann G, Jepson C, Rahimi M, Rothwell JR, McInnes AD, Hasebe M, Reski R, Sterenberg BT, Suh DY. Physcomitrella PpORS, basal to plant type III polyketide synthases in phylogenetic trees, is a very long chain 2'-oxoalkylresorcinol synthase. J Biol Chem 2012; 288:2767-77. [PMID: 23223578 DOI: 10.1074/jbc.m112.430686] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
The plant type III polyketide synthases (PKSs), which produce diverse secondary metabolites with different biological activities, have successfully co-evolved with land plants. To gain insight into the roles that ancestral type III PKSs played during the early evolution of land plants, we cloned and characterized PpORS from the moss Physcomitrella. PpORS has been proposed to closely resemble the most recent common ancestor of the plant type III PKSs. PpORS condenses a very long chain fatty acyl-CoA with four molecules of malonyl-CoA and catalyzes decarboxylative aldol cyclization to yield the pentaketide 2'-oxoalkylresorcinol. Therefore, PpORS is a 2'-oxoalkylresorcinol synthase. Structure modeling and sequence alignments identified a unique set of amino acid residues (Gln(218), Val(277), and Ala(286)) at the putative PpORS active site. Substitution of the Ala(286) to Phe apparently constricted the active site cavity, and the A286F mutant instead produced triketide alkylpyrones from fatty acyl-CoA substrates with shorter chain lengths. Phylogenetic analysis and comparison of the active sites of PpORS and alkylresorcinol synthases from sorghum and rice suggested that the gramineous enzymes evolved independently from PpORS to have similar functions but with distinct active site architecture. Microarray analysis revealed that PpORS is exclusively expressed in nonprotonemal moss cells. The in planta function of PpORS, therefore, is probably related to a nonprotonemal structure, such as the cuticle.
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Affiliation(s)
- Sun Young Kim
- Department of Chemistry and Biochemistry, University of Regina, Regina, Saskatchewan S4S 0A2, Canada
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Feyerabend T, Steeves R, Jager B, Wiedemann G, Sommer K, Richter E, Katschinski D, Robins H. Local hyperthermia, hyperfractionated radiation, and cisplatin in preirradiated recurrent lymph node metastases of recurrent head and neck cancer. Int J Oncol 2012; 10:591-5. [PMID: 21533418 DOI: 10.3892/ijo.10.3.591] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
Large tumor size is a negative prognostic variable for attaining complete regression (CR) with local hyperthermia (HT) and radiotherapy (RT). Such poor prognosis lesions (i.e., >7 cm(2) or >14 cm(3)) have an expected CR rate of similar to 30+/-8%. To improve on this result we added cisplatin to HT and RT with standard fractionation (std Fx) in an earlier study, and observed a 19% CR rate in head and neck (H&N) patients. We now report the results of a second generation trial combining HT, cisplatin (40 mg/m(2)) and hyperfractionated RT in a series of 13 pretreated poor prognosis H&N patients. Therapy encompassed 44 triple modality sessions and was well tolerated: toxicity included one episode of grade-3 skin reaction and one grade 1 leukopenia. Although the overall remission rate was 92%, the CR rate was only 8%; this resulted in early closure of this trial concluding that hyperfractionated RT had no (over std Fx RT) benefit in this combined modality approach.
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Affiliation(s)
- T Feyerabend
- UNIV WISCONSIN,CTR COMPREHENS CANC,MADISON,WI 53792. UNIV LUBECK,D-23538 LUBECK,GERMANY
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31
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Colpitts CC, Kim SS, Posehn SE, Jepson C, Kim SY, Wiedemann G, Reski R, Wee AGH, Douglas CJ, Suh DY. PpASCL, a moss ortholog of anther-specific chalcone synthase-like enzymes, is a hydroxyalkylpyrone synthase involved in an evolutionarily conserved sporopollenin biosynthesis pathway. New Phytol 2011; 192:855-868. [PMID: 21883237 DOI: 10.1111/j.1469-8137.2011.03858.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Sporopollenin is the main constituent of the exine layer of spore and pollen walls. Recently, several Arabidopsis genes, including polyketide synthase A (PKSA), which encodes an anther-specific chalcone synthase-like enzyme (ASCL), have been shown to be involved in sporopollenin biosynthesis. The genome of the moss Physcomitrella patens contains putative orthologs of the Arabidopsis sporopollenin biosynthesis genes. We analyzed available P.patens expressed sequence tag (EST) data for putative moss orthologs of the Arabidopsis genes of sporopollenin biosynthesis and studied the enzymatic properties and reaction mechanism of recombinant PpASCL, the P.patens ortholog of Arabidopsis PKSA. We also generated structure models of PpASCL and Arabidopsis PKSA to study their substrate specificity. Physcomitrella patens orthologs of Arabidopsis genes for sporopollenin biosynthesis were found to be expressed in the sporophyte generation. Similarly to Arabidopsis PKSA, PpASCL condenses hydroxy fatty acyl-CoA esters with malonyl-CoA and produces hydroxyalkyl α-pyrones that probably serve as building blocks of sporopollenin. The ASCL-specific set of Gly-Gly-Ala residues predicted by the models to be located at the floor of the putative active site is proposed to serve as the opening of an acyl-binding tunnel in ASCL. These results suggest that ASCL functions together with other sporophyte-specific enzymes to provide polyhydroxylated precursors of sporopollenin in a pathway common to land plants.
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Affiliation(s)
- Che C Colpitts
- Department of Chemistry and Biochemistry, University of Regina, Regina, SK S4S 0A2, Canada
| | - Sung Soo Kim
- Department of Botany, University of British Columbia, Vancouver, BC V6T 1Z4, Canada
| | - Sarah E Posehn
- Department of Chemistry and Biochemistry, University of Regina, Regina, SK S4S 0A2, Canada
| | - Christina Jepson
- Department of Chemistry and Biochemistry, University of Regina, Regina, SK S4S 0A2, Canada
| | - Sun Young Kim
- Department of Chemistry and Biochemistry, University of Regina, Regina, SK S4S 0A2, Canada
| | - Gertrud Wiedemann
- Plant Biotechnology, Faculty of Biology, University of Freiburg, 79104 Freiburg, Germany
| | - Ralf Reski
- Plant Biotechnology, Faculty of Biology, University of Freiburg, 79104 Freiburg, Germany
- Freiburg Institute for Advanced Studies, University of Freiburg, 79104 Freiburg, Germany
| | - Andrew G H Wee
- Department of Chemistry and Biochemistry, University of Regina, Regina, SK S4S 0A2, Canada
| | - Carl J Douglas
- Department of Botany, University of British Columbia, Vancouver, BC V6T 1Z4, Canada
| | - Dae-Yeon Suh
- Department of Chemistry and Biochemistry, University of Regina, Regina, SK S4S 0A2, Canada
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32
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Cabanis M, Krug A, Pyka M, Walter H, Winterer G, Müller B, Wiedemann G, Vogeley K, Wittorf A, Rapp A, Klingberg S, Kircher T. Neural correlates of Cognitive Behavioural Therapy effects on positive symptoms in patients with schizophrenic disorders. Pharmacopsychiatry 2011. [DOI: 10.1055/s-0031-1292457] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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33
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Güttgemanns J, Büch A, Sevecke K, Döpfner M, Lehmkuhl G, Herrlich J, Müller K, Wiedemann G, Klingberg S, Bechdolf A. [Early onset psychosis: rationale and concept of a cognitive-behavioral intervention]. Fortschr Neurol Psychiatr 2011; 79:524-30. [PMID: 21870313 DOI: 10.1055/s-0031-1281615] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
Early onset psychoses (EOP, age of onset between age 14 and 18 years) are known to be associated with a poorer outcome than adult onset psychoses, both in terms of psychotic symptoms and social remission. For adult patients with psychosis, numerous cognitive-behavioral interventions have proven their effectiveness in recent years. This contrasts with a dearth of findings for EOP, even though it can be considered as a variant of adult onset psychosis. Thus, we have developed a cognitive-behavioral therapy intervention that was specifically adapted to the characteristics and needs of young people suffering from psychosis. The concept of the intervention is outlined in the present article. Acceptability and feasibility of the intervention are currently undergoing evaluation in a randomised, controlled pilot study.
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Affiliation(s)
- J Güttgemanns
- Die Institutsangaben sind am Ende des Beitrags gelistet
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34
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Radke U, Reinold B, Schlaak L, Segatz-Thiele F, Wiedemann G, Boelling T, Wagner W. The application of therapeutic music (TM) during the radiotherapy in order to improve the patient compliance and minimize incorrect positioning during the treatment. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.e19585] [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: 11/20/2022] Open
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35
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Wiedemann G, Hermsen C, Melzer M, Büttner-Mainik A, Rennenberg H, Reski R, Kopriva S. Targeted knock-out of a gene encoding sulfite reductase in the moss Physcomitrella patens affects gametophytic and sporophytic development. FEBS Lett 2010; 584:2271-8. [PMID: 20347810 DOI: 10.1016/j.febslet.2010.03.034] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2009] [Revised: 03/17/2010] [Accepted: 03/22/2010] [Indexed: 01/16/2023]
Abstract
A key step in sulfate assimilation into cysteine is the reduction of sulfite to sulfide by sulfite reductase (SiR). This enzyme is encoded by three genes in the moss Physcomitrella patens. To obtain a first insight into the roles of the individual isoforms, we deleted the gene encoding the SiR1 isoform in P. patens by homologous recombination and subsequently analysed the DeltaSiR1 mutants. While DeltaSiR1 mutants showed no obvious alteration in sulfur metabolism, their regeneration from protoplasts and their ability to produce mature spores was significantly affected, highlighting an unexpected link between moss sulfate assimilation and development, that is yet to be characterized.
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Affiliation(s)
- Gertrud Wiedemann
- University of Freiburg, Faculty of Biology, Plant Biotechnology, Freiburg, Germany
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36
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Berdel W, Nass G, Wiedemann G. Der Mechanismus der Tumorallergie und seine Bedeutung für die Tumorpathogenese. Int Arch Allergy Immunol 2009. [DOI: 10.1159/000228333] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
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Ryssel H, Kloeters O, Germann G, Schäfer T, Wiedemann G, Oehlbauer M. The antimicrobial effect of acetic acid--an alternative to common local antiseptics? Burns 2009; 35:695-700. [PMID: 19286325 DOI: 10.1016/j.burns.2008.11.009] [Citation(s) in RCA: 90] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2007] [Accepted: 11/17/2008] [Indexed: 10/21/2022]
Abstract
Acetic acid has been commonly used in medicine for more than 6000 years for the disinfection of wounds and especially as an antiseptic agent in the treatment and prophylaxis of the plague. The main goal of this study was to prove the suitability of acetic acid, in low concentration of 3%, as a local antiseptic agent, especially for use in salvage procedures in problematic infections caused by organisms such as Proteus vulgaris, Acinetobacter baumannii or Pseudomonas aeruginosa. This study was designed to compare the in vitro antimicrobial effect of acetic acid with those of common local antiseptics such as povidone-iodine 11% (Betaisodona), polyhexanide 0.04% (Lavasept), mafenide 5% and chlohexidine gluconate 1.5% cetrimide 15% (Hibicet). Former studies suggest the bactericidal effect of acetic acid, but these data are very heterogeneous; therefore, a standardised in vitro study was conducted. To cover the typical bacterial spectrum of a burn unit, the following Gram-negative and Gram-positive bacterial strains were tested: Escherichia coli, P. vulgaris, P. aeruginosa, A. baumannii, Enterococcus faecalis, Staphylococcus epidermidis, methicillin-resistant Staphylococcus aureus (MRSA) and beta-haemolytic Streptococcus group A and B. The tests showed excellent bactericidal effect of acetic acid, particularly with problematic Gram-negative bacteria such as P. vulgaris, P. aeruginosa and A. baumannii. The microbiological spectrum of acetic acid is wide, even when tested at a low concentration of 3%. In comparison to our currently used antiseptic solutions, it showed similar - in some bacteria, even better - bactericidal properties. An evaluation of the clinical value of topical application of acetic acid is currently underway. It can be concluded that acetic acid in a concentration of 3% has excellent bactericidal effect and, therefore, seems to be suitable as a local antiseptic agent, but further clinical studies are necessary.
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Affiliation(s)
- H Ryssel
- Department of Hand, Plastic and Reconstructive Surgery and Burn Center, BG Trauma Center Ludwigshafen, Ludwigshafen, Germany.
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Nikisch G, Hertel A, Kiessling B, Wagner T, Krasz D, Hofmann E, Wiedemann G. Three-year follow-up of a patient with early-onset Alzheimer's disease with presenilin-2 N141I mutation - case report and review of the literature. Eur J Med Res 2008; 13:579-584. [PMID: 19073399] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/27/2023] Open
Abstract
Autosomal dominant early-onset Alzheimer disease (EOAD) is a heterogeneous condition that has been associated with mutations in 3 different genes: the amyloid precursor protein (APP), presenilin 1 (PSEN1), and presenilin 2 (PSEN2) genes. Most cases are due to mutations in the PSEN1 gene, whereas mutations in the APP and PSEN2 genes are rare. Mutation analysis of the APP, PSEN1 and PSEN2 genes was performed. We herein report the case of a German EOAD patient with a family history of dementia and a missense mutation at codon 141 (N141I) of the PSEN2 gene. To our knowledge, this is the first German EOAD patient without a Volga-German ancestry and a positive family history for dementia carries the mutation PSEN-2 N141I. The patient came to our clinic for the first time when she was 47 years old. During the following 3 years, her Mini-Mental State Examination (MMSE) score dropped from 28 to 0. Mild cognitive impairment (MCI) was an early symptom that was already present during the first consultation. The concentration in cerebrospinal fluid (CSF) of tau-protein (1151 pg/ml) was increased, whereas the concentration of beta-amyloid protein (Abeta1-42) was decreased (335 pg/ml). Magnetic resonance imaging (MRI) revealed only slight changes in the early stage of the disease and positron emission tomography with (18F) fluoro-2-deoxy-D-glucose (18F-FDG PET) demonstrated glucose reduction left parietal and in the precuneus region. Follow-up MRI and 18F-FDG PET studies showed progression of atrophy of the left entorhinal cortex with relative sparing of the hippocampus and progressive hypometabolism of both temporoparietal lobes and left frontal lobe.
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Affiliation(s)
- G Nikisch
- Department of Psychiatry and Psychotherapy, Klinikum Fulda gAG, Pacelliallee 4, 36043 Fulda, Germany.
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Nikisch G, Wiedemann G, Kießling B, Hertel A. Familiäre Alzheimer-Demenz mit Präsenilin 2 N141I Mutation. Fortschr Neurol Psychiatr 2008; 76:606-9. [DOI: 10.1055/s-2008-1038246] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Vandenbussche F, Fierro AC, Wiedemann G, Reski R, Van Der Straeten D. Evolutionary conservation of plant gibberellin signalling pathway components. BMC Plant Biol 2007; 7:65. [PMID: 18047669 PMCID: PMC2234411 DOI: 10.1186/1471-2229-7-65] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2007] [Accepted: 11/29/2007] [Indexed: 05/18/2023]
Abstract
BACKGROUND Gibberellins (GA) are plant hormones that can regulate germination, elongation growth, and sex determination. They ubiquitously occur in seed plants. The discovery of gibberellin receptors, together with advances in understanding the function of key components of GA signalling in Arabidopsis and rice, reveal a fairly short GA signal transduction route. The pathway essentially consists of GID1 gibberellin receptors that interact with F-box proteins, which in turn regulate degradation of downstream DELLA proteins, suppressors of GA-controlled responses. RESULTS Arabidopsis sequences of the gibberellin signalling compounds were used to screen databases from a variety of plants, including protists, for homologues, providing indications for the degree of conservation of the pathway. The pathway as such appears completely absent in protists, the moss Physcomitrella patens shares only a limited homology with the Arabidopsis proteins, thus lacking essential characteristics of the classical GA signalling pathway, while the lycophyte Selaginella moellendorffii contains a possible ortholog for each component. The occurrence of classical GA responses can as yet not be linked with the presence of homologues of the signalling pathway. Alignments and display in neighbour joining trees of the GA signalling components confirm the close relationship of gymnosperms, monocotyledonous and dicotyledonous plants, as suggested from previous studies. CONCLUSION Homologues of the GA-signalling pathway were mainly found in vascular plants. The GA signalling system may have its evolutionary molecular onset in Physcomitrella patens, where GAs at higher concentrations affect gravitropism and elongation growth.
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Affiliation(s)
- Filip Vandenbussche
- Unit Plant Hormone Signaling & Bio-imaging, Department of Molecular Genetics, Ghent University, Ledeganckstraat 35, B-9000 Ghent, Belgium
| | - Ana C Fierro
- Department Microbial and Molecular Systems, K.U. Leuven, Kasteelpark Arenberg 20, 3000 Leuven, Belgium
| | - Gertrud Wiedemann
- Plant Biotechnology, Faculty of Biology, University of Freiburg, Schaenzlestr. 1, 79104 Freiburg, Germany
| | - Ralf Reski
- Plant Biotechnology, Faculty of Biology, University of Freiburg, Schaenzlestr. 1, 79104 Freiburg, Germany
| | - Dominique Van Der Straeten
- Unit Plant Hormone Signaling & Bio-imaging, Department of Molecular Genetics, Ghent University, Ledeganckstraat 35, B-9000 Ghent, Belgium
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Wiedemann G, Koprivova A, Schneider M, Herschbach C, Reski R, Kopriva S. The role of the novel adenosine 5'-phosphosulfate reductase in regulation of sulfate assimilation of Physcomitrella patens. Plant Mol Biol 2007; 65:667-76. [PMID: 17786562 DOI: 10.1007/s11103-007-9231-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2007] [Accepted: 08/18/2007] [Indexed: 05/17/2023]
Abstract
Sulfate assimilation provides reduced sulfur for the synthesis of the amino acids cysteine and methionine and for a range of other metabolites. The key step in control of plant sulfate assimilation is the reduction of adenosine 5'-phosphosulfate to sulfite. The enzyme catalyzing this reaction, adenosine 5'phosphosulfate reductase (APR), is found as an iron sulfur protein in plants, algae, and many bacteria. In the moss Physcomitrella patens, however, a novel isoform of the enzyme, APR-B, has recently been discovered lacking the co-factor. To assess the function of the novel APR-B we used homologous recombination to disrupt the corresponding gene in P. patens. The knock-out plants were able to grow on sulfate as a sole sulfur source and the content of low molecular weight thiols was not different from wild type plants or plants where APR was disrupted. However, when treated with low concentrations of cadmium the APR-B knockout plants were more sensitive than both wild type and APR knockouts. In wild type P. patens, the two APR isoforms were not affected by treatments that strongly regulate this enzyme in flowering plants. The data thus suggest that in P. patens APS reduction is not the major control step of sulfate assimilation.
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Affiliation(s)
- Gertrud Wiedemann
- Plant Biotechnology, Faculty of Biology, University of Freiburg, Schaenzlestrasse 1, 79104 Freiburg, Germany
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Wiedemann G. Sopra le proprietà magnetiche delle combinazioni chimiche. ACTA ACUST UNITED AC 2007. [DOI: 10.1007/bf02729422] [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: 10/22/2022]
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Abstract
Sulfate assimilation is a pathway providing reduced sulfur for the synthesis of cysteine, methionine, co-enzymes such as iron-sulfur centres, thiamine, lipoic acid, or Coenzyme A, and many secondary metabolites, e.g., glucosinolates or alliins. The pathway is relatively well understood in flowering plants, but very little information exists on sulfate assimilation in basal land plants. Since the finding of a putative 3'-phosphoadenosine 5'-phosphosulfate reductase in PHYSCOMITRELLA PATENS, an enigmatic enzyme thought to exist in fungi and some bacteria only, it has been evident that sulfur metabolism in lower plants may substantially differ from seed plant models. The genomic sequencing of two basal plant species, the Bryophyte PHYSCOMITRELLA PATENS, and the Lycophyte SELAGINELLA MOELLENDORFFII, opens up the possibility to search for differences between lower and higher plants at the genomic level. Here we describe the similarities and differences in the organisation of the sulfate assimilation pathway between basal and advanced land plants derived from genome comparisons of these two species with ARABIDOPSIS THALIANA and ORYZA SATIVA, two seed plants with sequenced genomes. We found differences in the number of genes encoding sulfate transporters, adenosine 5'-phosphosulfate reductase, and sulfite reductase between the lower and higher plants. The consequences for regulation of the pathway and evolution of sulfate assimilation in plants are discussed.
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Affiliation(s)
- S Kopriva
- John Innes Centre, Norwich Research Park, Norwich NR4 7UH, UK.
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Kopriva S, Fritzemeier K, Wiedemann G, Reski R. The putative moss 3'-phosphoadenosine-5'-phosphosulfate reductase is a novel form of adenosine-5'-phosphosulfate reductase without an iron-sulfur cluster. J Biol Chem 2007; 282:22930-8. [PMID: 17519237 DOI: 10.1074/jbc.m702522200] [Citation(s) in RCA: 35] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Sulfate assimilation provides reduced sulfur for synthesis of the amino acids cysteine and methionine and for a range of other metabolites. Sulfate has to be activated prior to reduction by adenylation to adenosine 5'-phosphosulfate (APS). In plants, algae, and many bacteria, this compound is reduced to sulfite by APS reductase (APR); in fungi and some cyanobacteria and gamma-proteobacteria, a second activation step, phosphorylation to 3'-phosphoadenosine 5'-phosphosulfate (PAPS), is necessary before reduction to sulfite by PAPS reductase (PAPR). We found previously that the moss Physcomitrella patens is unique among these organisms in possessing orthologs of both APR and PAPR genes (Koprivova, A., Meyer, A. J., Schween, G., Herschbach, C., Reski, R., and Kopriva, S. (2002) J. Biol. Chem. 277, 32195-32201). To assess the function of the two enzymes, we compared their biochemical properties by analysis of purified recombinant proteins. APR from Physcomitrella is very similar to the well characterized APRs from seed plants. On the other hand, we found that the putative PAPR preferentially reduces APS. Sequence analysis, analysis of UV-visible spectra, and determination of iron revealed that this new APR, named PpAPR-B, does not contain the FeS cluster, which was previously believed to determine the substrate specificity of the otherwise relatively similar enzymes. The lack of the FeS cluster in PpAPR-B catalysis is connected with a lower turnover rate but higher stability of the protein. These findings show that APS reduction without the FeS cluster is possible and that plant sulfate assimilation is predominantly dependent on reduction of APS.
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Affiliation(s)
- Stanislav Kopriva
- Department of Metabolic Biology, John Innes Centre, Norwich NR4 7UH, United Kingdom.
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Nikendei C, Voelkl M, Dengler W, Wiedemann G, Pauli P. Depressive Verstimmung und Schmerz: Ereigniskorrelierte Potentiale bei der Präsentation von schmerzassoziiertem Wortmaterial. Psychother Psychosom Med Psychol 2005. [DOI: 10.1055/s-2005-863528] [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: 10/26/2022]
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Pauli P, Dengler W, Wiedemann G. Memory and Covariation Estimation Processes in Panic Disorder Patients. KLIN NEUROPHYSIOL 2004. [DOI: 10.1055/s-2004-832121] [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: 10/19/2022]
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Bakhahandeh A, Wiedemann G, Zabel P, Dalhoff K, Kohlmann T, Zumschlinge R, Penzel D, Wagner T, Peters S. Randomized trial with ICE (ifosfamide, carboplatin, etoposide) plus whole body hyperthermia versus ICE chemotherapy for malignant pleural mesothelioma. J Clin Oncol 2004. [DOI: 10.1200/jco.2004.22.90140.7288] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
- A. Bakhahandeh
- Universitätsklinikum Schleswig-Holstein, Campus Luebeck, Luebeck, Germany; Oberschwaben Klinik Ravensburg, Ravensburg, Germany; Forschungszentrum Borstel, Borstel, Germany; Universität Greifswald, Greifswald, Germany; Kreiskliniken Traunstein-Trostberg, Traunstein, Germany; Krankenhaus Bremen Ost, Bremen, Germany
| | - G. Wiedemann
- Universitätsklinikum Schleswig-Holstein, Campus Luebeck, Luebeck, Germany; Oberschwaben Klinik Ravensburg, Ravensburg, Germany; Forschungszentrum Borstel, Borstel, Germany; Universität Greifswald, Greifswald, Germany; Kreiskliniken Traunstein-Trostberg, Traunstein, Germany; Krankenhaus Bremen Ost, Bremen, Germany
| | - P. Zabel
- Universitätsklinikum Schleswig-Holstein, Campus Luebeck, Luebeck, Germany; Oberschwaben Klinik Ravensburg, Ravensburg, Germany; Forschungszentrum Borstel, Borstel, Germany; Universität Greifswald, Greifswald, Germany; Kreiskliniken Traunstein-Trostberg, Traunstein, Germany; Krankenhaus Bremen Ost, Bremen, Germany
| | - K. Dalhoff
- Universitätsklinikum Schleswig-Holstein, Campus Luebeck, Luebeck, Germany; Oberschwaben Klinik Ravensburg, Ravensburg, Germany; Forschungszentrum Borstel, Borstel, Germany; Universität Greifswald, Greifswald, Germany; Kreiskliniken Traunstein-Trostberg, Traunstein, Germany; Krankenhaus Bremen Ost, Bremen, Germany
| | - T. Kohlmann
- Universitätsklinikum Schleswig-Holstein, Campus Luebeck, Luebeck, Germany; Oberschwaben Klinik Ravensburg, Ravensburg, Germany; Forschungszentrum Borstel, Borstel, Germany; Universität Greifswald, Greifswald, Germany; Kreiskliniken Traunstein-Trostberg, Traunstein, Germany; Krankenhaus Bremen Ost, Bremen, Germany
| | - R. Zumschlinge
- Universitätsklinikum Schleswig-Holstein, Campus Luebeck, Luebeck, Germany; Oberschwaben Klinik Ravensburg, Ravensburg, Germany; Forschungszentrum Borstel, Borstel, Germany; Universität Greifswald, Greifswald, Germany; Kreiskliniken Traunstein-Trostberg, Traunstein, Germany; Krankenhaus Bremen Ost, Bremen, Germany
| | - D. Penzel
- Universitätsklinikum Schleswig-Holstein, Campus Luebeck, Luebeck, Germany; Oberschwaben Klinik Ravensburg, Ravensburg, Germany; Forschungszentrum Borstel, Borstel, Germany; Universität Greifswald, Greifswald, Germany; Kreiskliniken Traunstein-Trostberg, Traunstein, Germany; Krankenhaus Bremen Ost, Bremen, Germany
| | - T. Wagner
- Universitätsklinikum Schleswig-Holstein, Campus Luebeck, Luebeck, Germany; Oberschwaben Klinik Ravensburg, Ravensburg, Germany; Forschungszentrum Borstel, Borstel, Germany; Universität Greifswald, Greifswald, Germany; Kreiskliniken Traunstein-Trostberg, Traunstein, Germany; Krankenhaus Bremen Ost, Bremen, Germany
| | - S. Peters
- Universitätsklinikum Schleswig-Holstein, Campus Luebeck, Luebeck, Germany; Oberschwaben Klinik Ravensburg, Ravensburg, Germany; Forschungszentrum Borstel, Borstel, Germany; Universität Greifswald, Greifswald, Germany; Kreiskliniken Traunstein-Trostberg, Traunstein, Germany; Krankenhaus Bremen Ost, Bremen, Germany
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Affiliation(s)
- W. Buchsmann
- Oberschwabenklinik gGmbH, St. Elisabeth Krankenhaus, Ravensburg, Germany
| | - J. Jabbari
- Oberschwabenklinik gGmbH, St. Elisabeth Krankenhaus, Ravensburg, Germany
| | - B. Katsimbari
- Oberschwabenklinik gGmbH, St. Elisabeth Krankenhaus, Ravensburg, Germany
| | - W. Wagner
- Oberschwabenklinik gGmbH, St. Elisabeth Krankenhaus, Ravensburg, Germany
| | - G. Wiedemann
- Oberschwabenklinik gGmbH, St. Elisabeth Krankenhaus, Ravensburg, Germany
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Wiedemann G, Müller P. Use of Tn KPK2 for sequencing a 10.6-kb PstI DNA fragment of Bradyrhizobium japonicum and for the construction of aspA and ndvA mutants. Arch Microbiol 2004; 181:418-27. [PMID: 15188087 DOI: 10.1007/s00203-004-0673-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2004] [Revised: 03/22/2004] [Accepted: 03/30/2004] [Indexed: 11/29/2022]
Abstract
Transposon Tn KPK2 was used to saturate a randomly cloned Bradyrhizobium japonicum PstI fragment and the insertions were used as starting points for the sequence determination. The first gene of the 10.6-kb DNA insert encodes a homologue to ndvA, the product of which is known to be involved in the formation of periplasmic cyclic glucans. Selected Tn KPK2 insertions were introduced into the B. japonicum wild-type strain. The resulting mutants were subsequently tested for their symbiotic interactions with soybeans. As in Sinorhizobium meliloti, a B. japonicum ndvA mutant was affected in salt-stress tolerance and exhibited symbiotic defects in that it induced the formation of ineffective soybean nodules. The central nodule tissue was infected by bacteroids, but within the infected cells the mutant was not properly maintained. Another gene was found to be highly similar to bacterial aspartases and thus was named aspA. The putative function of the product of this gene was confirmed by genetic complementation of aspartase-less Escherichia coli strain TK237. The symbiotic phenotype of a B. japonicum aspA:Tn KPK2 mutant consisted of enlarged symbiosomes that made the system ineffective. In general, Tn KPK2 is a suitable means for fast sequencing. In combination with pJQ200SK, the resulting recombinant plasmids can be directly used to create genetically defined mutants.
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Affiliation(s)
- Gertrud Wiedemann
- FB Biologie/Molekulare Zellbiologie und Angewandte Botanik, Philipps Universität Marburg, Karl-von-Frisch-Str. 8, 35032, Marburg, Germany
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