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Qawasmeh Y, Töpfer K, Serwatka T, Tremblay JC, Paulus B. Theoretical investigations of the interaction between diatomic molecules and coinage metal atoms. Mol Phys 2021. [DOI: 10.1080/00268976.2021.1892224] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Y. Qawasmeh
- Institut für Chemie und Biochemie, Freie Universität Berlin, Berlin, Germany
| | - K. Töpfer
- Institut für Chemie und Biochemie, Freie Universität Berlin, Berlin, Germany
| | - T. Serwatka
- Institut für Chemie und Biochemie, Freie Universität Berlin, Berlin, Germany
| | - J. C. Tremblay
- Laboratoire de Physique et Chimie Théoriques, CNRS-Université de Lorraine, Metz, France
| | - B. Paulus
- Institut für Chemie und Biochemie, Freie Universität Berlin, Berlin, Germany
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Töpfer K, Cartellieri M, Michen S, Wiedemuth R, Müller N, Lindemann D, Bachmann M, Füssel M, Schackert G, Temme A. DAP12-based activating chimeric antigen receptor for NK cell tumor immunotherapy. J Immunol 2015; 194:3201-12. [PMID: 25740942 DOI: 10.4049/jimmunol.1400330] [Citation(s) in RCA: 156] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
NK cells are emerging as new effectors for immunotherapy of cancer. In particular, the genetic engraftment of chimeric Ag receptors (CARs) in NK cells is a promising strategy to redirect NK cells to otherwise NK cell-resistant tumor cells. On the basis of DNAX-activation protein 12 (DAP12), a signaling adaptor molecule involved in signal transduction of activating NK cell receptors, we generated a new type of CAR targeting the prostate stem cell Ag (PSCA). We demonstrate in this article that this CAR, designated anti-PSCA-DAP12, consisting of DAP12 fused to the anti-PSCA single-chain Ab fragment scFv(AM1) confers improved cytotoxicity to the NK cell line YTS against PSCA-positive tumor cells when compared with a CAR containing the CD3ζ signaling chain. Further analyses revealed phosphorylation of the DAP12-associated ZAP-70 kinase and IFN-γ release of CAR-engineered cells after contact with PSCA-positive target cells. YTS cells modified with DAP12 alone or with a CAR bearing a phosphorylation-defective ITAM were not activated. Notably, infused YTS cells armed with anti-PSCA-DAP12 caused delayed tumor xenograft growth and resulted in complete tumor eradication in a significant fraction of treated mice. The feasibility of the DAP12-based CAR was further tested in human primary NK cells and confers specific cytotoxicity against KIR/HLA-matched PSCA-positive tumor cells, which was further enhanced by KIR-HLA mismatches. We conclude that NK cells engineered with DAP12-based CARs are a promising tool for adoptive tumor immunotherapy.
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Affiliation(s)
- Katrin Töpfer
- Section of Experimental Neurosurgery and Tumor Immunology, Department of Neurosurgery, University Hospital Carl Gustav Carus, TU Dresden, 01307 Dresden, Germany
| | - Marc Cartellieri
- Institute of Radiopharmaceutical Cancer Research, Helmholtz-Zentrum Dresden-Rossendorf, 01328 Dresden, Germany
| | - Susanne Michen
- Section of Experimental Neurosurgery and Tumor Immunology, Department of Neurosurgery, University Hospital Carl Gustav Carus, TU Dresden, 01307 Dresden, Germany
| | - Ralf Wiedemuth
- Section of Experimental Neurosurgery and Tumor Immunology, Department of Neurosurgery, University Hospital Carl Gustav Carus, TU Dresden, 01307 Dresden, Germany
| | - Nadja Müller
- Section of Experimental Neurosurgery and Tumor Immunology, Department of Neurosurgery, University Hospital Carl Gustav Carus, TU Dresden, 01307 Dresden, Germany
| | - Dirk Lindemann
- Institute of Virology, Medical Faculty Carl Gustav Carus, TU Dresden, 01307 Dresden, Germany
| | - Michael Bachmann
- Institute of Radiopharmaceutical Cancer Research, Helmholtz-Zentrum Dresden-Rossendorf, 01328 Dresden, Germany
| | - Monika Füssel
- DKMS Life Science Lab, GmbH, 01307 Dresden, Germany; and
| | - Gabriele Schackert
- Section of Experimental Neurosurgery and Tumor Immunology, Department of Neurosurgery, University Hospital Carl Gustav Carus, TU Dresden, 01307 Dresden, Germany
| | - Achim Temme
- Section of Experimental Neurosurgery and Tumor Immunology, Department of Neurosurgery, University Hospital Carl Gustav Carus, TU Dresden, 01307 Dresden, Germany; German Cancer Consortium (DKTK), 01307 Dresden, Germany
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Arndt C, Feldmann A, Töpfer K, Koristka S, Cartellieri M, Temme A, Ehninger A, Ehninger G, Bachmann M. Redirection of CD4+ and CD8+ T lymphocytes via a novel antibody-based modular targeting system triggers efficient killing of PSCA+ prostate tumor cells. Prostate 2014; 74:1347-58. [PMID: 25053504 DOI: 10.1002/pros.22851] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/21/2014] [Accepted: 06/09/2014] [Indexed: 12/20/2022]
Abstract
BACKGROUND There is still a need for new therapeutic options against prostate cancer. Conventional single-chain bispecific antibodies (bsAbs), that directly cross-link T cells and tumor cells, hold great potential for efficient tumor treatment. However, rapid development of novel bsAbs is hampered by laborious optimization to improve their efficacy and reduce potential side effects. To accelerate the development of a novel antibody tool for the redirection of T cells to different tumor-associated antigens, we recently introduced a modular targeting system. METHODS We here describe a novel modular system for treatment of prostate cancer by retargeting of T cells to the prostate stem cell antigen (PSCA). Functionality of the novel PSCA-specific modular system was investigated in vitro by T cell activation and chromium release assays as well as in immunodeficient mice. RESULTS Similar to a conventional bsAb CD3-PSCA, the novel PSCA-specific modular system induces activation of both CD4+ and CD8+ T cells leading to secretion of pro-inflammatory cytokines and highly efficient target-specific tumor cell lysis. The novel TM was ready-to-use from the time point of construction and functional at low E:T ratios and picomolar concentrations without further optimization. In addition, the PSCA-specific modular system delays outgrowth of s.c. tumors in mice comparable to bsAb CD3-PSCA. CONCLUSIONS We have developed a novel PSCA-specific modular system which triggers an efficient T cell-mediated killing of PSCA+ tumor cells in vitro and in vivo. The new Ab-based targeting strategy can functionally replace conventional bsAbs and allows a flexible redirection of T cells to different tumor-associated antigens.
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Affiliation(s)
- Claudia Arndt
- Medical Faculty 'Carl Gustav Carus' TU Dresden, Institute of Immunology, Dresden, Germany
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Wiedemuth R, Klink B, Töpfer K, Schröck E, Schackert G, Tatsuka M, Temme A. Survivin safeguards chromosome numbers and protects from aneuploidy independently from p53. Mol Cancer 2014; 13:107. [PMID: 24886358 PMCID: PMC4041913 DOI: 10.1186/1476-4598-13-107] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [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: 12/06/2013] [Accepted: 05/02/2014] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Survivin, a member of the inhibitor of apoptosis (IAP) gene family, has a dual role in mitosis and in apoptosis. It is abundantly expressed in every human tumor, compared with normal tissues. During mitosis Survivin assembles with the chromosomal passenger complex and regulates chromosomal segregation. Here, we aim to explore whether interference with the mitotic function of Survivin is linked to p53-mediated G1 cell cycle arrest and affects chromosomal stability. METHODS In this study, we used HCT116, SBC-2, and U87-MG and generated corresponding isogenic p53-deficient cells. Retroviral vectors were used to stably knockdown Survivin. The resulting phenotype, in particular the mechanisms of cell cycle arrest and of initiation of aneuploidy, were investigated by Western Blot analysis, confocal laser scan microscopy, proliferation assays, spectral karyotyping and RNAi. RESULTS In all cell lines Survivin-RNAi did not induce instant apoptosis but caused polyplodization irrespective of p53 status. Strikingly, polyploidization after knockdown of Survivin resulted in merotelic kinetochore spindle assemblies, γH2AX-foci, and DNA damage response (DDR), which was accompanied by a transient p53-mediated G1-arrest. That p53 wild type cells specifically arrest due to DNA damage was shown by simultaneous inhibition of ATM and DNA-PK, which abolished induction of p21waf/cip. Cytogenetic analysis revealed chromosomal aberrations indicative for DNA double strand break repair by the mechanism of non-homologous end joining (NHEJ), only in Survivin-depleted cells. CONCLUSION Our findings suggest that Survivin plays an essential role in proper amphitelic kinetochore-spindle assembly and that constraining Survivin's mitotic function results in polyploidy and aneuploidy which cannot be controlled by p53. Therefore, Survivin critically safeguards chromosomal stability independently from p53.
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Affiliation(s)
| | | | | | | | | | | | - Achim Temme
- Department of Neurosurgery, Section Experimental Neurosurgery/Tumor Immunology, University Hospital Carl Gustav Carus, TU Dresden, Fetscherstr, 74, 01307 Dresden, Germany.
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Cartellieri M, Koristka S, Arndt C, Feldmann A, Stamova S, von Bonin M, Töpfer K, Krüger T, Geib M, Michalk I, Temme A, Bornhäuser M, Lindemann D, Ehninger G, Bachmann MP. A novel ex vivo isolation and expansion procedure for chimeric antigen receptor engrafted human T cells. PLoS One 2014; 9:e93745. [PMID: 24699869 PMCID: PMC3974878 DOI: 10.1371/journal.pone.0093745] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2013] [Accepted: 03/07/2014] [Indexed: 01/23/2023] Open
Abstract
Genetically engineered T lymphocytes are a promising option for cancer therapy. Prior to adoptive transfer they have to be expanded in vitro to reach therapeutically sufficient numbers. So far, no universal method exists for selective in vitro expansion of engineered T lymphocytes. In order to overcome this problem and for proof of concept we incorporated a novel unique peptide sequence of ten amino acids as epitope (E-Tag) into the binding domains of two novel chimeric antigen receptors (ECARs) directed against either prostate stem cell antigen (PSCA) for the treatment of prostate cancer (PCa) or CD33 for the treatment of acute myeloide leukemia (AML). The epitope tag then was utilized for expanding ECAR engrafted T cells by triggering the modified T cells via a monoclonal antibody directed against the E-Tag (Emab). Moreover, the E-Tag served as an efficient selection epitope for immunomagnetic isolation of modified T cells to high purity. ECAR engrafted T cells were fully functional and mediated profound anti-tumor effects in the respective models of PCa or AML both in vitro and in vivo. The method can be integrated straightforward into clinical protocols to improve therapeutic efficiency of tumor treatment with CAR modified T lymphocytes.
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Affiliation(s)
- Marc Cartellieri
- Institute of Immunology, Medical Faculty ‘Carl Gustav Carus’, TU Dresden, Dresden, Germany
- Helmholtz Zentrum Dresden-Rossendorf, Institute of Radiopharmaceutical Cancer Research, Department of Radioimmunology, Dresden, Germany
| | - Stefanie Koristka
- Institute of Immunology, Medical Faculty ‘Carl Gustav Carus’, TU Dresden, Dresden, Germany
| | - Claudia Arndt
- Institute of Immunology, Medical Faculty ‘Carl Gustav Carus’, TU Dresden, Dresden, Germany
| | - Anja Feldmann
- Institute of Immunology, Medical Faculty ‘Carl Gustav Carus’, TU Dresden, Dresden, Germany
- Helmholtz Zentrum Dresden-Rossendorf, Institute of Radiopharmaceutical Cancer Research, Department of Radioimmunology, Dresden, Germany
| | - Slava Stamova
- Institute of Immunology, Medical Faculty ‘Carl Gustav Carus’, TU Dresden, Dresden, Germany
| | - Malte von Bonin
- Medical Clinic and Polyclinic I, University Hospital ‘Carl Gustav Carus’, TU Dresden, Dresden, Germany
| | - Katrin Töpfer
- Department of Neurosurgery, Section Experimental Neurosurgery and Tumor Immunology, Medical Faculty ‘Carl Gustav Carus’, TU Dresden, Dresden, Germany
| | - Thomas Krüger
- Institute of Immunology, Medical Faculty ‘Carl Gustav Carus’, TU Dresden, Dresden, Germany
| | - Mathias Geib
- Institute of Immunology, Medical Faculty ‘Carl Gustav Carus’, TU Dresden, Dresden, Germany
| | - Irene Michalk
- Institute of Immunology, Medical Faculty ‘Carl Gustav Carus’, TU Dresden, Dresden, Germany
| | - Achim Temme
- Department of Neurosurgery, Section Experimental Neurosurgery and Tumor Immunology, Medical Faculty ‘Carl Gustav Carus’, TU Dresden, Dresden, Germany
| | - Martin Bornhäuser
- Medical Clinic and Polyclinic I, University Hospital ‘Carl Gustav Carus’, TU Dresden, Dresden, Germany
- Center for Regenerative Therapies Dresden, TU Dresden, Dresden, Germany
| | - Dirk Lindemann
- Institute of Virology, Medical Faculty ‘Carl Gustav Carus’, TU Dresden, Dresden, Germany
- Center for Regenerative Therapies Dresden, TU Dresden, Dresden, Germany
| | - Gerhard Ehninger
- Medical Clinic and Polyclinic I, University Hospital ‘Carl Gustav Carus’, TU Dresden, Dresden, Germany
| | - Michael P. Bachmann
- Institute of Immunology, Medical Faculty ‘Carl Gustav Carus’, TU Dresden, Dresden, Germany
- Helmholtz Zentrum Dresden-Rossendorf, Institute of Radiopharmaceutical Cancer Research, Department of Radioimmunology, Dresden, Germany
- Center for Regenerative Therapies Dresden, TU Dresden, Dresden, Germany
- * E-mail:
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Töpfer K, Ochsenreither S, Keilholz U, Joussen AM. Uveale Metastasen: Klinische Merkmale, Therapie und zugrunde liegende Tumorerkrankung bei 58 Patienten. Klin Monbl Augenheilkd 2013. [DOI: 10.1055/s-0033-1363389] [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: 10/25/2022]
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Feldmann A, Arndt C, Töpfer K, Stamova S, Krone F, Cartellieri M, Koristka S, Michalk I, Lindemann D, Schmitz M, Temme A, Bornhäuser M, Ehninger G, Bachmann M. Novel humanized and highly efficient bispecific antibodies mediate killing of prostate stem cell antigen-expressing tumor cells by CD8+ and CD4+ T cells. J Immunol 2012; 189:3249-59. [PMID: 22875801 DOI: 10.4049/jimmunol.1200341] [Citation(s) in RCA: 82] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Prostate cancer is the most common noncutaneous malignancy in men. The prostate stem cell Ag (PSCA) is a promising target for immunotherapy of advanced disease. Based on a novel mAb directed to PSCA, we established and compared a series of murine and humanized anti-CD3-anti-PSCA single-chain bispecific Abs. Their capability to redirect T cells for killing of tumor cells was analyzed. During these studies, we identified a novel bispecific humanized Ab that efficiently retargets T cells to tumor cells in a strictly Ag-dependent manner and at femtomolar concentrations. T cell activation, cytokine release, and lysis of target cells depend on a cross-linkage of redirected T cells with tumor cells, whereas binding of the anti-CD3 domain alone does not lead to an activation or cytokine release. Interestingly, both CD8+ and CD4+ T cells are activated in parallel and can efficiently mediate the lysis of tumor cells. However, the onset of killing via CD4+ T cells is delayed. Furthermore, redirecting T cells via the novel humanized bispecific Abs results in a delay of tumor growth in xenografted nude mice.
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Affiliation(s)
- Anja Feldmann
- Institute of Immunology, Medical Faculty Carl Gustav Carus, TU Dresden, 01307 Dresden, Germany
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Wu T, Töpfer K, Lin SW, Li H, Bian A, Zhou XY, High KA, Ertl HCJ. Self-complementary AAVs induce more potent transgene product-specific immune responses compared to a single-stranded genome. Mol Ther 2011; 20:572-9. [PMID: 22186792 DOI: 10.1038/mt.2011.280] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
Using a mouse model we show that self-complementary (sc) adeno-associated virus (AAV) vectors pseudotyped with capsids of serotypes 2, 7 or 8 induce more potent transgene product-specific CD8(+) T cell and antibody responses compared to corresponding single-stranded (ss)AAV vectors. These data suggest that the higher and more rapidly appearing amounts of transgene product achieved with scAAV vectors may increase detrimental immune responses in gene transfer recipients.
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Affiliation(s)
- TeLang Wu
- The Wistar Institute, Philadelphia, Pennsylvania 19104, USA
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Koristka S, Cartellieri M, Theil A, Feldmann A, Arndt C, Stamova S, Michalk I, Töpfer K, Temme A, Kretschmer K, Bornhäuser M, Ehninger G, Schmitz M, Bachmann M. Retargeting of Human Regulatory T Cells by Single-Chain Bispecific Antibodies. J I 2011; 188:1551-8. [DOI: 10.4049/jimmunol.1101760] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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Hendruschk S, Wiedemuth R, Aigner A, Töpfer K, Cartellieri M, Martin D, Kirsch M, Ikonomidou C, Schackert G, Temme A. RNA interference targeting survivin exerts antitumoral effects in vitro and in established glioma xenografts in vivo. Neuro Oncol 2011; 13:1074-89. [PMID: 21788344 PMCID: PMC3177660 DOI: 10.1093/neuonc/nor098] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Malignant glioma represents the most common primary adult brain tumor in Western industrialized countries. Despite aggressive treatment modalities, the median survival duration for patients with glioblastoma multiforme (GBM), the highest grade malignant glioma, has not improved significantly over past decades. One promising approach to deal with GBM is the inactivation of proteins essential for survival or progression of glioma cells by means of RNA interference (RNAi) techniques. A likely candidate for an RNAi therapy of gliomas is the inhibitor of apoptosis protein survivin. Survivin is involved in 2 main cellular processes-cell division and inhibition of apoptosis. We show here that stable RNAi of survivin induced polyploidy, apoptosis, and impaired proliferation of human U343-MG, U373-MG, H4, and U87-MG cells and of primary glioblastoma cells. Proteome profiler arrays using U373-MG cells identified a novel set of differentially expressed genes upon RNAi-mediated survivin knockdown. In particular, the death receptor TRAIL R2/DR5 was strongly upregulated in survivin-depleted glioma cells, inducing an enhanced cytotoxic response of allogeneic human NK cells. Moreover, an experimental in vivo therapy using polyethylenimine (PEI)/siRNA complexes for survivin knockdown efficiently blocked tumor growth of established subcutaneous U373-MG tumors and enhanced survival of NMRI(nu/nu) mice orthopically transplanted with U87-MG cells. We conclude that survivin is functionally relevant in gliomas and that PEI-mediated exogenous delivery of siRNA targeting survivin is a promising strategy for glioblastoma therapy.
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Affiliation(s)
- Sandy Hendruschk
- Department of Neurosurgery, University Hospital Carl Gustav Carus, Dresden, Germany
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DiMenna L, Latimer B, Parzych E, Haut LH, Töpfer K, Abdulla S, Yu H, Manson B, Giles-Davis W, Zhou D, Lasaro MO, Ertl HCJ. Augmentation of primary influenza A virus-specific CD8+ T cell responses in aged mice through blockade of an immunoinhibitory pathway. J Immunol 2010; 184:5475-84. [PMID: 20410485 DOI: 10.4049/jimmunol.0903808] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Immune responses diminish with age resulting in an increased susceptibility of the elderly to infectious agents and an inability to mount protective immune responses to vaccines. Immunosenescence affects multiple aspects of the immune system, including CD8(+) T cells, which control viral infections and are assumed to prevent the development of cancers. In this study, we tested if CD8(+) T cell responses in aged mice could be enhanced through a vaccine that concomitantly expresses Ag and a molecule that blocks an immunoinhibitory pathway. Specifically, we tested a vaccine based on a replication-defective chimpanzee-derived adenovirus vector expressing the nucleoprotein (NP) of influenza A virus as a fusion protein with the HSV type 1 glycoprotein D, which through binding to the herpes virus entry mediator, blocks the immunoinhibitory herpes virus entry mediator B and T lymphocyte attenuator/CD160 pathways. Our results show that the vaccine expressing a fusion protein of NP and glycoprotein D induces significantly higher NP-specific CD8(+) T cell responses in young and aged mice compared with the vaccine expressing NP only.
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Töpfer K. Ausbildung von Kinderkrankenschwestern – wie ist eine Optimierung möglich? Z Geburtshilfe Neonatol 2007. [DOI: 10.1055/s-2007-983169] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Töpfer K, Regenaermel-Drenkow C, Hammer; H, Wauer RR. „Babykomfort“ – Wie unterstützen wir den Start ins Leben? Z Geburtshilfe Neonatol 2004. [DOI: 10.1055/s-2004-829429] [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: 10/20/2022]
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Töpfer K. Balancing competing water uses--a necessity for sustainable development. Water Sci Technol 2003; 47:11-16. [PMID: 12731766] [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] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
The UNEP Water Policy and Strategy emphasises the need for environmentally sustainable water use as a key to sustainable development, including poverty reduction. The development of UNEP programmes over the years has produced an integrated, comprehensive and dynamic approach to competing water uses.
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Affiliation(s)
- K Töpfer
- UNEP, United Nations Avenue, Gigiri, P.O. Box 80552, Nairobi, Kenya.
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Affiliation(s)
- K Töpfer
- United Nations Environment Program, Post Office Box 30552, Nairobi, Kenya.
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Töpfer K. Foreword by Klaus Töpfer German Federal Minister of Environmental Affairs : For the first issue of the international journal "Environmental Science and Pollution Research". Environ Sci Pollut Res Int 1994; 1:2-3. [PMID: 24234138 DOI: 10.1007/bf02986915] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
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Töpfer K. [Environmental protection in the hospital]. Krankenpfl J 1991; 29:510-1. [PMID: 1762409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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Töpfer K, Fürst P. [Effect of noise and vibration on residents living near railway lines]. Z Gesamte Hyg 1986; 32:75-8. [PMID: 3962385] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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Wilke KT, Töpfer K, Schultze D. Zur Chemie in Schmelzlösungen. Z PHYS CHEM 1965. [DOI: 10.1515/zpch-1965-0112] [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: 11/15/2022]
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