Dissertations / Theses on the topic 'Antikörper'
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Reichert, Irina [Verfasser]. "Nachweis und Verlauf von Antikörpern gegen therapeutische monoklonale Antikörper (Human Anti-Human-Antikörper, HAHA) bei Patienten mit rheumatischen Erkrankungen / Irina Reichert." Tübingen : Universitätsbibliothek Tübingen, 2021. http://nbn-resolving.de/urn:nbn:de:bsz:21-dspace-1190151.
Full textSchlaeth, Martin [Verfasser]. "Untersuchung der Antikörper-abhängigen zellulären Zytotoxizität von humanisierten EGF-Rezeptor-Antikörpern mit optimiertem Antikörper-Fc-Fragment gegen Tumorzellen mit mutiertem KRAS-Protein / Martin Schlaeth." Kiel : Universitätsbibliothek Kiel, 2013. http://d-nb.info/1031190244/34.
Full textPetzold, Maria. "Antikörper gegen deamidierte Gliadinpeptide." Doctoral thesis, Universitätsbibliothek Leipzig, 2011. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-73304.
Full textFinsterhölzl, Lydia [Verfasser], and Michael [Akademischer Betreuer] Melter. "Untersuchung des Einsatzes der Serumantikörper Anti-Chitobiosid Kohlenhydrat Antikörper (ACCA), Anti-Laminaribiosid Kohlenhydrat Antikörper (ALCA), Anti-Mannobiosid Kohlenhydrat Antikörper (AMCA), Anti-Chitin Antikörper (Anti-C) und Anti-Laminarin Antikörper (Anti-L) in Verbindung mit Anti-Saccharomyces cerevisiae Ig G Antikörper (gASCA) zur Diagnostik und Stratifizierung von Kindern und Jugendlichen mit Morbus Crohn / Lydia Finsterhölzl. Betreuer: Michael Melter." Regensburg : Universitätsbibliothek Regensburg, 2013. http://d-nb.info/1042055041/34.
Full textDiehl, Veronika. "Vergleich von vier ELISAs für IgA Antikörper gegen humane Gewebetransglutaminase und IgA und IgG Anti-Gliadin Antikörper und Validierung eines kommerziellen Tests zum Nachweis von sekretorischen IgA Antikörpern gegen humane Gewebetransglutaminase und Gliadin im Stuhl." Diss., lmu, 2009. http://nbn-resolving.de/urn:nbn:de:bvb:19-100094.
Full textApel, Susanne [Verfasser]. "Implementierung einer Festphasen Assay-basierenden Verträglichkeitsprobe zum Ausschluss Donor-spezifischer Antikörper für Nierentransplantatempfänger nach Konditionierung mit therapeutischen Antikörpern / Susanne Apel." Halle, 2018. http://d-nb.info/1169132758/34.
Full textUmlauf, Christian. "Herstellung und Charakterisierung monoklonaler Antikörper gegen equine Leukozyten." Diss., lmu, 2004. http://nbn-resolving.de/urn:nbn:de:bvb:19-18480.
Full textRaue, Katharina [Verfasser]. "Antikörper-abhängige Immunantwort im SIV-Makakenmodell / Katharina Raue." Hannover : Bibliothek der Tierärztlichen Hochschule Hannover, 2012. http://d-nb.info/1030349304/34.
Full textPüttmann, Maria Christiane [Verfasser]. "HCV-Diagnostik mittels genotypspezifischer Antikörper / Maria Christiane Püttmann." Aachen : Hochschulbibliothek der Rheinisch-Westfälischen Technischen Hochschule Aachen, 2012. http://d-nb.info/1019344520/34.
Full textFiebig, Uwe. "Induktion neutralisierender Antikörper gegen transmembrane Hüllproteine von Retroviren." Doctoral thesis, Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät I, 2008. http://dx.doi.org/10.18452/15746.
Full textPorcine xenotransplants may offer a potential solution to the problem posed by the limited supply of allotransplants. However, xenotransplantation may be associated with the risk of transmission of microorganisms, in particular of porcine endogenous retroviruses (PERVs) that are an integral part of the porcine genome and able to infect human cells in vitro. Possible strategies to prevent virus transmission include the development of PERV knockout animals or of effective vaccines. When antisera prepared against the main structural proteins of PERV were screened, goat and rat antisera against the recombinant ectodomain of the transmembrane envelope protein p15E were found to neutralize PERV infectivity. Epitope mapping using overlapping peptides revealed two epitopes, one near the fusion peptide (E1, GPQQLEK) and the other near the transmembrane domain (E2, FEGWFN). These sequences are identical for all PERVs and are highly conserved among all gammaretroviruses. Interestingly, neutralizing antibodies isolated from AIDS patients that recognize regions partially homologous with E2 (mAb4E10, LWNWFN) or located in close proximity to E2 (mAb2F5, ELDKWA) are known to neutralize a broad range of HIV-1 strains. The binding mechanisms of these HIV neutralizing antibodies were analyzed in ELISA experiments and in vitro inhibition assays. The results indicate that the two most broadly reactive HIV-1 envelope gp41 human mAbs are specific for a discontinuous epitope composed of the E1 and the E2 domain. If so, these two transmembrane protein domains in different retroviruses act as effective targets for neutralizing antibodies and may provide the basis for effective antiretroviral vaccines.
Gondi, Gábor. "Einfluss eines Carboanhydrase XII-spezifischen Antikörpers auf das Tumorwachstum in vitro und in vivo sowie Onkosomen-basierte Generierung neuer tumorreaktiver Antikörper." Diss., Ludwig-Maximilians-Universität München, 2013. http://nbn-resolving.de/urn:nbn:de:bvb:19-161706.
Full textTumours and established tumour cell lines constitutively secrete high amounts of microvesicles (MVs) less than 200 nm in dia-meter. These vesicles display various proteins in their mem-branes, which are frequently found to be strongly upregulated in the cells of origin. MVs used in this work are roughly a hundred times smaller than cells and less complex because they contain predominantly membrane-bound proteins, many of them being well known to oncologists and tumour immunologists as tumour-associated antigens. Therefore, these particles are hereinafter referred to as oncosomes. Previous work of our group has identified oncosomes derived from different tumour cell lines as excellent tools for immunizations aiming at the generation of monoclonal antibodies against initially unknown, but oncologically relevant proteins. A monoclonal antibody (6A10) that specifically inhibits CA XII activity was recently generated in my group with the help of such microvesicles. In this work, using the 6A10 antibody, I was able to demonstrate that blocking CA XII-enzyme activity interferes with the growth of three-dimensional tumour cell clusters both in vitro and in vivo. In severely immunocompromised NSG mice, the growth rates of luciferase-expressing tumor xenografts were monitored and precisely quantified by whole-body bioluminescence-based imaging (BLI) over the entire duration of the experiment. Additionally, specific binding of 6A10 con-jugated to an infrared dye to tumour cells in vivo was visualized by means of fluorescence-based imaging. Because no specific inhibitor oft CA XII was available so far, this work represents the first study on CA XII as a target for an immunotherapeutic intervention, proving the enzyme as a relevant tumour-associated antigen for clinical oncology. As a second project, I made use of the unique composition and high immunogenicity of oncosomes in that I utilized them as tools for the generation of new tumour-reactive monoclonal antibodies, which I subsequently characterized and determined the specificities of some of them using immunoprecipitations and mass spectrometry. Interestingly, the majority of antibodies obtained from immunizations recognized natively folded protein antigens, which were found to be strongly expressed on the surface of a variety of tumour cell lines and thus may find use in diagnostic or even therapeutic approaches. Besides their application in this rather random immunization strategy, I successfully used recombinant oncosomes for the targeted generation of antibodies against a particular protein (membrane-associated carbonic anhydrase IX). Here, CA IX was chosen as a membrane-tethered tumour-associated antigen, which is often co-expressed alongside with carbonic anhydrase XII on various invasive solid cancers types. CA IX is another membrane-bound enzyme expressed on a variety of hypoxic tumours and critical to the homeostasis of the slightly alkaline intracellular pH of many tumour cells. This approach proves that microvesicles not only are suitable for the identification of novel tumour-reactive antigens and generation of antibodies, but also for selective production of antibodies specific to a molecule of choice. Thus, microvesicles engineered to carry a specific protein as natively folded immunogen can be used to generate anti-bodies with particular features, i.e. recognition of proteins in their native tertiary struc-ture – a prerequisite for functional antibodies.
Obermeier, Birgit. "Multiple Sklerose: Charakterisierung oligoklonaler Antikörper im Liquor von Patienten." Diss., lmu, 2011. http://nbn-resolving.de/urn:nbn:de:bvb:19-132389.
Full textCramer, Thomas [Verfasser]. "Generierung monoklonaler Antikörper gegen das Protein CLN6 / Thomas Cramer." Halle, 2017. http://d-nb.info/118038783X/34.
Full textSchubert, Nicole [Verfasser]. "Charakterisierung der Antikörper-vermittelten Aggregation der Granulozyten / Nicole Schubert." Greifswald : Universitätsbibliothek Greifswald, 2013. http://d-nb.info/1044594136/34.
Full textTammen, Anna-Lina [Verfasser]. "Analyse der Tumorzelllyse hexamerisierender IgG1-Antikörper / Anna-Lina Tammen." Kiel : Universitätsbibliothek Kiel, 2018. http://d-nb.info/1161729542/34.
Full textCornad, Karsten, Nadja Röber, Sebastian Rudolph, and Michael Mahler. "DFS70-Antikörper – Biomarker zum Ausschluss ANA-assoziierter rheumatischer Erkrankungen." De Gruyter, 2014. https://tud.qucosa.de/id/qucosa%3A38558.
Full textLohse, Stefan [Verfasser]. "Charakterisierung rekombinanter IgA-Antikörper gegen den EGFR / Stefan Lohse." Kiel : Universitätsbibliothek Kiel, 2010. http://d-nb.info/1020002476/34.
Full textPrüsse, Dorothee Angelika Verfasser], Reinhard [Akademischer Betreuer] [Voll, and Simone [Akademischer Betreuer] Brass. "Analyse der Antikörper-Glykosylierung bei Patienten mit rheumatoider Arthritis." Freiburg : Universität, 2017. http://d-nb.info/1148265791/34.
Full textKieselbach, Brit. "Molekulare Effekte der Immunmodulation mit einem anti-CD4-Antikörper." Doctoral thesis, Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät I, 2004. http://dx.doi.org/10.18452/15074.
Full textThe major problem in transplantation immunology is the development of long-term donor-specific nonresponsiveness without reduction of the normal recipient immunocompetence. A tolerant state would obviate the need for continuing immunosuppressive therapy. One level of immunosuppression for inducing graft acceptance involves antibodies specific for T-cells of the recipient leading to donorspecific tolerance (e.g. by using of anti-CD4 monoclonal antibodies = aCD4mAb). CD4+ T cells play a predominant role in the cascade of immune processes following transplantation of foreign tissues. The anti-rat CD4 mAb RIB5/2 is very potent in inducing allo-specific tolerance to renal and heart allografts in rat recipients. Here I investigated the molecular mechanisms underlying anti-CD4 antibody mediated inhibition of allo-specific T cell activation and how this is antagonised by exogenous IL-2. IL-2 acts as growth factor for antigen-activated T cells by inducing the expression of cell cycle proteins and also enhances the expression of cytokines, e.g. IFNgamma in T cells. IFNgamma profoundly affects a variety of immune responses, including activation of antigen presenting cells. Anti-CD4 treatment, in vivo and in vitro, completely abrogated IL-2 production by alloreactive T cells. In contrast, anti-CD4 treated allo-activated T cells showed similar IFNgamma mRNA expression as untreated allo-activated T cells, but did not secrete any protein. Thus, the anti-CD4 antibody cannot prevent IFNgamma mRNA expression but is interfering with posttranscriptional mechanisms controlling IFNgamma production during allo-activation of T cells. The investigations revealed a candidate of these IFNgamma translation control. Additionally I investigated the heat shock protein 90 (Hsp90)-associated cochaperone p23. p23 upregulation during T cell activation is also abrogated by anti-CD4 treatment. Hsp90 chaperoning is critical for proper folding, stabilization and trafficking of a number of cellular signaling proteins as e.g. kinases. Hsp90-kinase complexes play an important role in T-cell signal transduction and little is known about the importance or even regulation of Hsp90-cochaperones like p23 during T-cell activation. I analysed the regulation of p23 and downstream effects on different kinases involved in T-cell signaling. These findings are supposed to contribute to a better understanding of the mechanisms underlying tolerance induction.
Ivancevic, Velimir. "Immunszintigraphie mit dem monoklonalen NCA-95-Antigranulozyten-Antikörper und dem NCA-90-Antigranulozyten-Antikörper-Fab'-Fragment zur Entzündungsdiagnostik bei Problemindikationen und zur Knochenmarkszintigraphie." Doctoral thesis, Humboldt-Universität zu Berlin, Medizinische Fakultät - Universitätsklinikum Charité, 2002. http://dx.doi.org/10.18452/13799.
Full textThe present habilitation thesis summarises the author´s own published results on the thematic focus of immunoscintigraphy using antigranulocyte antibodies or antibody fragments for diagnosing infection in problematic indications and for bone marrow scintigraphy. In diagnosing subacute infective endocarditis and prosthetic valve endocarditis the combined application of both immunoscintigraphy using the NCA-95-antigranulocyte antibodies and transesophageal echocardiography reliably proves infection even in patients with negative results in one of the methods applied. In patients with fever of unknown origin immunoscintigraphy is superior to both sonography and CT in the early detection of abdominal abscesses. In patients suffering from autoimmune diseases the scintigraphic exclusion of infection is an important step towards verifying a serologically negative autoimmune disease. Finally, immunoscintigraphy with differentiated analysis of photopenic lesions in the haemopoietically active bone marrow allows an early detection of malignant marrow involvement in patients with metastasising neoplastic disease. Immunoscintigraphy with either NCA-95-antigranulocyte antibodies or NCA-90-antigranulocyte antibody Fab´-fragments is not suitable for diagnosing inflammatory bowel disease because of nonspecific bowel activity encountered in either method and because of falsely negative results observed occasionally. In patients with low-grade bone-and-joint infection and previous joint surgery immunoscintigraphy using the NCA-90-antigranulocyte antibody Fab´-fragment is highly sensitive but lacks specificity. The clinical benefit of this method might consist of proving or excluding low-grade infection in the investigated joint in patients suffering from rheumatoid arthritis or other, contemporaneous inflammation outside of the joint under investigation. In investigating bone marrow diseases with the help of immunoscintigraphy using NCA-95-antigranulocyte-antibodies a highly significant inverse correlation of the uptake index with patient age was observed. In patients with pancytopenia the uptake index was significantly lower than in an age-matched normal group and displayed a clear-cut differentiation from the normal uptake range. The NCA-90-antigranulocyte antibody Fab´-fragment was investigated as an alternative to the NCA-95-antigranulocyte-antibody in diagnosing bone marrow disease. However, this method allows just a qualitative, incomplete evaluation of certain bone marrow regions, while the Fab´ uptake index is not suitable for clinical use.
Malamid, Anna. "Monoklonale Antikörper für die Analyse der Genexpression in neuronalen Geweben." Diss., lmu, 2005. http://nbn-resolving.de/urn:nbn:de:bvb:19-37786.
Full textWeingart, Vincens. "Eradikationskontrolle von Helicobacter pylori mittels Stuhltest unter Verwendung monoklonaler Antikörper." Diss., lmu, 2005. http://nbn-resolving.de/urn:nbn:de:bvb:19-46229.
Full textFröhlich, Thomas. "Peptid-induzierte Antikörper als hochspezifische Werkzeuge der modernen Proteom-Analyse." Diss., lmu, 2003. http://nbn-resolving.de/urn:nbn:de:bvb:19-47057.
Full textKleinsteuber, Ina. "Herstellung und Charakterisierung monoklonaler Antikörper zum Nachweis von Cronobacter spp." Diss., Ludwig-Maximilians-Universität München, 2015. http://nbn-resolving.de/urn:nbn:de:bvb:19-179257.
Full textCronobacter spp. are opportunistic pathogens that cause serious infections, characterized by high lethality rates, particularly in infants and immunocompromised adults after ingestion of contaminated food. To establish immunochemical assays for the specific detection of Cronobacter, within this study monoclonal antibodies were generated and comprehensively characterized. For the preparation of the immunogen, Cronobacter cells were first treated with polymyxin B and, subsequently, mice were immunized either with the resulting cell pellet (ghosts) obtained by centrifugation or with the cell-free supernatants (lysate) of these preparations. Both polymyxin B derived preparations were highly immunogenic, serum antibody titres were usually higher than 1:10,000. Cell fusion experiments resulted in the establishment of 14 stable hybridoma cell lines (seven per approach). Intra- and inter-genus-specificity and affinity of the mAbs were determined by using indirect enzyme immunoassays (EIA). Epitope-specificity of the generated mAbs was determined by immunoblot- and immunofluorescence techniques. All of the mAbs derived from the immunization with Cronobacter ghosts were characterized by broad reactivity towards bacteria mainly within the family Enterobacteriaceae but also to other gram-negative bacteria. For all of these mAbs proteins were identified as antigenic determinants. Reactive bands generally showed an apparent molecular weight of > 40 kDa. In contrast, using the lysate preparation as immunogen, six of the seven obtained mAbs exhibited high affinity for the O-polysaccharide chains of Cronobacter specific lipopolysaccharides (LPS): mAb 2G4 αL showed highly specific reactions with C. turicensis MHI 21026 (serotype O1). Employing this mAb in an indirect EIA, the limit of detection was at approx. 104 cfu/ml. For the other five O-antigen-specific mAbs, which interacted specifically with strains of C. sakazakii, serotyp O1, detection limits ranging from 105-107 cfu/ml were achieved. All anti-LPS mAbs were of the IgG subtype and reacted with viable Cronobacter cells as shown by immunofluorescence studies.
Jansen, Alexander [Verfasser]. "Neutralisierende Antikörper gegen Botulinumneurotoxin- Eine Analyse relevanter Einflussfaktoren / Alexander Jansen." Düsseldorf : Universitäts- und Landesbibliothek der Heinrich-Heine-Universität Düsseldorf, 2021. http://nbn-resolving.de/urn:nbn:de:hbz:061-20210929-112314-9.
Full textFrey, Dietmar [Verfasser]. "Charakterisierung von gpA33 und Eignung als Antikörper-Target / Dietmar Frey." Berlin : Medizinische Fakultät Charité - Universitätsmedizin Berlin, 2011. http://d-nb.info/102535477X/34.
Full textHobusch, Juliane [Verfasser]. "Allergenspezifische Immuntherapie (SIT) induziert sialylierte immunsuppressive IgG-Antikörper / Juliane Hobusch." Lübeck : Zentrale Hochschulbibliothek Lübeck, 2018. http://d-nb.info/1156309239/34.
Full textWernecke, Norman. "Seroprävalenz von Masernvirus-IgG Antikörpern: Untersuchung zum Zusammenhang zwischen Avidität und In-Vitro-Neutralisationsfähigkeit." Doctoral thesis, Universitätsbibliothek Leipzig, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-211333.
Full textEißler, Nina. "Charakterisierung der zellulären Immunantwort nach Therapie mit einem trifunktionalen bispezifischen Antikörper." Diss., lmu, 2012. http://nbn-resolving.de/urn:nbn:de:bvb:19-146126.
Full textRothaug, Moritz [Verfasser], Harald [Gutachter] Wajant, and Andreas [Gutachter] Beilhack. "Entwicklung neuer Antikörper Fusionsproteine / Moritz Rothaug ; Gutachter: Harald Wajant, Andreas Beilhack." Würzburg : Universität Würzburg, 2019. http://d-nb.info/1179079876/34.
Full textSpecht, Philip [Verfasser]. "Prävalenz medikamentenabhängiger erythrozytärer Antikörper bei Patienten*innen mit Mukoviszidose / Philip Specht." Berlin : Medizinische Fakultät Charité - Universitätsmedizin Berlin, 2019. http://d-nb.info/1195081065/34.
Full textDelker, Anna Maria. "Expression diagnostisch verwendbarer Antigene zum Nachweis West-Nil-Virus-spezifischer Antikörper." Doctoral thesis, Universitätsbibliothek Leipzig, 2014. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-138414.
Full textCedillo, Rosales Sibilina [Verfasser]. "Charakterisierung ruminanter Pestiviren mittels Polymerasekettenreaktion und monoklonaler Antikörper / Sibilina Cedillo Rosales." Gießen : DVG-Service, 2005. http://d-nb.info/974104094/34.
Full textLütt, Alva [Verfasser]. "Prävalenz und funktionelle Charakterisierung antineuronaler Antikörper in gastroenterologischen Patienten / Alva Lütt." Berlin : Medizinische Fakultät Charité - Universitätsmedizin Berlin, 2020. http://d-nb.info/1218077433/34.
Full textGondi, Gábor [Verfasser], and Josef [Akademischer Betreuer] Mautner. "Einfluss eines Carboanhydrase XII-spezifischen Antikörpers auf das Tumorwachstum in vitro und in vivo sowie Onkosomen-basierte Generierung neuer tumorreaktiver Antikörper / Gábor Gondi. Betreuer: Josef Mautner." München : Universitätsbibliothek der Ludwig-Maximilians-Universität, 2013. http://d-nb.info/1043906371/34.
Full textStein, Carsten. "Klinische Labordiagnostik und Pharmakokinetik humanisierter therapeutischer Antikörper in human FcRn transgenen Mäusen." Diss., lmu, 2011. http://nbn-resolving.de/urn:nbn:de:bvb:19-129256.
Full textSellrie, Frank. "Immuntechnologische Verfahren zum Aufbau homogener Immunoassays sowie zur Selektion Antikörper produzierender Zellen." Phd thesis, Universität Potsdam, 2007. http://opus.kobv.de/ubp/volltexte/2008/1598/.
Full textHomogeneous immunoassays are test systems which do not depend on separation steps. The substrate channeling immunoassay is based on the product/substrate transfer in an immunological complex built up by two enzymes. The product of the first enzyme functions as substrate for the second enzyme. The second enzyme generates a photometrically detectable product. The close proximity of these two enzymes is the basis of the substrate channeling. This proximity is created by antibody binding to the corresponding analyte. The enzymes glucose oxidase and peroxidase were used for the development of such an assay system. The established homogeneous immunoassay was functional. But the sensitivity of the assay was much lower than that of conventional heterogeneous immunoassays. The principle of a fluorescence quenching immunoassay is based on the fact that two antibodies exclude each other from binding to a dihapten conjugate. The conjugate consists of the analyte and the fluorophore. The two antibodies which compete for the conjugate binding are an anti-analyte antibody and an anti-fluorophore antibody. This anti-fluorophore antibody quenches the fluorescence of the fluorophore after binding. The addition of free analyte alters the equilibrium of the system so that the anti-fluorophore antibody is bound to the fluorophore and the fluorescence is quenched. The change in fluorescence is therefore an indicator of the concentration of free analyte added. A homogeneous fluorescence quenching immunoassay was established for the determination of the herbicide diuron. The sensitivities obtained allow the practical immunodiagnostic application of the system. A dihapten conjugate was also employed for the development of a selection method for antibody-producing cells. Toxin conjugates were used in this system. Each conjugate consisted of a ligand and a toxin. Antibody binding to the ligand sterically inhibits the toxin component to interact with its target structure. Only cells secreting a binding antibody will survive the selection and will accumulate in culture. The system was applied to the selection of E.coli cells producing a recombinant fluorescein-binding antibody. The toxin conjugate used in experiment consisted of fluorescein (ligand) and ampicillin (toxin component). This selection procedure allowed the isolation of recombinant antibody-producing E.coli cells. It has the potential to replace the time-consuming and labour-intensive methods used so far.
Dieckmann, Chantal [Verfasser]. "Evaluierung L1CAM blockierender Antikörper zur Chemosensitivierung hochmaligner und chemoresistenter Tumore. / Chantal Dieckmann." Kiel : Universitätsbibliothek Kiel, 2012. http://d-nb.info/1022376152/34.
Full textSander, Anika [Verfasser], and Thomas [Akademischer Betreuer] Fanghänel. "Entwicklung und Untersuchung U-230 markierter Antikörper / Anika Sander ; Betreuer: Thomas Fanghänel." Heidelberg : Universitätsbibliothek Heidelberg, 2015. http://d-nb.info/1180499336/34.
Full textRauh, Christina Susanne [Verfasser], and Jürgen J. [Akademischer Betreuer] Wenzel. "Langzeitverlauf Hepatitis-E-spezifischer Antikörper / Christina Susanne Rauh ; Betreuer: Jürgen J. Wenzel." Regensburg : Universitätsbibliothek Regensburg, 2018. http://d-nb.info/1160086362/34.
Full textNeumann, Thea [Verfasser]. "Erprobung endogener Rezeptoren und monoklonaler Antikörper zur Differentialdiagnostik von Rizinintoxikationen / Thea Neumann." Berlin : Freie Universität Berlin, 2020. http://d-nb.info/1219070122/34.
Full textDeckert, P. Markus [Verfasser]. "Rekombinante Antikörper-Enzym-Fusionskonstrukte zur zielgerichteten Therapie kolorektaler Karzinome / P. Markus Deckert." Berlin : Medizinische Fakultät Charité - Universitätsmedizin Berlin, 2010. http://d-nb.info/1024006956/34.
Full textSchleder, Stephan [Verfasser]. "Die neuen Anti-Glykan-Serumantikörper Anti-Mannobiosid-Carbohydrat-IgG-Antikörper (AMCA), Anti-Laminaribiosid-Carbohydrat-IgG-Antikörper (ALCA), Anti-Chitobiosid-Carbohydrat-IgA-Antikörper (ACCA), Anti-Laminarin-Carbohydrat-IgA-Antikörper (Anti-L) und Anti-Chitin-Carbohydrat-IgA-Antikörper (Anti-C), sowie Anti-Saccharomyces-cerevisiae-Antikörper (gASCA) in Verbindung mit perinukleären antineutrophilen zytoplasmatischen Antikörpern (pANCA) erleichtern die Diagnose und Differenzierung chronisch entzündlicher Darmerkrankungen / vorgelegt von Stephan Schleder." 2010. http://d-nb.info/1006418040/34.
Full textRothaug, Moritz. "Entwicklung neuer Antikörper Fusionsproteine." Doctoral thesis, 2019. https://nbn-resolving.org/urn:nbn:de:bvb:20-opus-177043.
Full textUsing agonistic antibodies specific for TNFRSF receptors, a single binding of one antibody to two receptors is not able to induce intracellular singnaling pathways. It became evident from in vitro studies that Fc gamma receptors binding of antibodies is of crucial relevance for agonistic activity. This dissersation approaches to the question, if the anchoring is possible to reach with another receptor than Fc gamma receptor. Using scFv:CD70 as an example, this question could be answered positive
Austein, Kristof. "Entwicklung und Charakterisierung von 4-1BB-spezifischen Agonisten." Doctoral thesis, 2021. https://doi.org/10.25972/OPUS-23428.
Full textIn order to effect signal transduction by means of agnostic antibodies at receptors of TNFRSF, prior immobilization via the Fc part of the antibody is a basic requirement. In this thesis the possibility of anchoring via a different binding domain should be investigated. It could be shown that immobilization by means of scFv: CD70 leads to strong signal activation
Banaszek, Agnes. "Dual Antigen-Restricted Complementation of a Two-Part Trispecific Antibody for Targeted Immunotherapy of Blood Cancer." Doctoral thesis, 2013. https://nbn-resolving.org/urn:nbn:de:bvb:20-opus-90174.
Full textKrebszellen entgehen der Immunüberwachung oftmals dadurch, dass sie zwei wichtige Komponenten der Immunabwehr, nämlich antigenpräsentierende MHC- und kostimulatorische Moleküle, herunter regeln. Zurzeit befindet sich daher eine Reihe neuartiger Anti-Krebs-Substanzen in der Entwicklung, die darauf abzielen, das Immunsystem beim Erkennen und Bekämpfen von Krebs zu unterstützen. Rekombinante bispezifische Antikörper stellen eine Gruppe solch neuartiger Therapeutika dar. Sie erkennen zwei unterschiedliche Antigene und rekrutieren gezielt zytotoxische Effektorzellen zu Tumorzellen. Zur Krebsimmuntherapie sind BiTE-Antikörper (bispecific T cell engager) bereits gut untersucht. Diese Antikörper sind gegen ein tumorassoziiertes Antigen sowie gegen CD3ε, das konstante Molekül des T Zell-Rezeptor-Komplexes, gerichtet. Diese Arbeit beschreibt zum einen die Entwicklung eines bispezifischen Antikörpers, der CD3ε und den mit Rhabdomyosarkom assoziierten fetalen Acetylcholinrezeptor erkennt. Zum anderen präsentiert sie ein neues, zweiteiliges trispezifisches Antikörperformat, das zur Behandlung von Leukämie und anderen bösartigen Erkrankungen des blutbildenden Systems im Zusammenhang mit hämatopoetischer Stammzelltransplantation (HSZT) genutzt werden könnte. Für eine HSZT wird ein HLA-identischer Spender bevorzugt. Dieser steht jedoch nur sehr selten zur Verfügung. In Fällen mit nur einer Unstimmigkeit in den HLA-Merkmalen zwischen Patient und Spender könnte diese HLA-Unstimmigkeit nun zur gezielten Krebsbehandlung ausgenutzt werden. In dieser Arbeit wurde ein trispezifisches HLA-A2 × CD45 × CD3 Antikörperkonstrukt speziell für solche Fälle entwickelt, in denen der Patient HLA-A2-positiv ist, der Spender jedoch nicht. Dies trifft in Deutschland auf ungefähr die Hälfte aller Fälle zu, da HLA-A2 hier als häufigstes HLA-Molekül vorkommt. Mit der Kombination aus HLA-A2 und dem Pan-Leukozytenmarker CD45 (leucocyte-common antigen) als Ziel, wird eine hochspezifische, von zwei Antigenen abhängige, zielgerichtete Tumoransteuerung (tumour targeting) möglich. Genauer gesagt wurden zwei Einzelketten-Antikörperkonstrukte entwickelt: i) ein HLA A2-spezifisches single-chain variable fragment (scFv) und ii) ein CD45-spezifisches scFv, jeweils verbunden mit der VL- bzw. der VH-Domäne eines CD3ε-spezifischen Antikörpers. Es stellte sich heraus, dass nach gleichzeitiger Bindung der beiden Konstrukte an dieselbe HLA-A2- und CD45-exprimierende Zelle sich die beiden einzelnen, ungepaarten variablen Domänen eines CD3ε-spezifischen Antikörpers zu einem funktionellen scFv zusammenfügen. Dieses Zusammenfügen sollte in einer therapeutischen Situation ausschließlich auf den Blutkrebszellen des Empfängers geschehen, was zur T-Zell-vermittelten Zerstörung der Krebszellen führen würde. Auf diese Weise könnte ein Rückfall der Erkrankung vermieden und eventuell sogar auf die Standardtherapie (Bestrahlung und Chemotherapie) verzichtet werden. Für die beiden beschriebenen Ansätze wurden die Antikörperkonstrukte periplasmatisch in E. coli exprimiert, über einen His-Tag aufgereinigt und biochemisch charakterisiert. Ihre Bindung an die jeweiligen Zielantigene wurde mittels Durchflusszytometrie nachgewiesen. Die stimulatorischen Eigenschaften der Antikörper wurden durch eine Messung der IL-2-Freisetzung nach Inkubation zusammen mit T-Zellen und antigenexprimierenden Zielzellen untersucht. Sowohl der gegen Rhabdomyosarkom gerichtete BiTE-Antikörper, als auch der zusammengefügte trispezifische Antikörper gegen Blutkrebs vermittelten konzentrationsabhängig eine T Zellaktivierung bei nanomolaren Konzentrationen. Für den trispezifischen Antikörper erwies sich dieser Effekt tatsächlich als abhängig von zwei Antigenen, da er durch eine vorausgehende Inkubation mit entweder einem HLA-A2- oder einem CD45-spezifischen scFv-Fragment geblockt werden konnte und nicht auf Zellen auftrat, die nur ein Antigen (CD45+) oder keins von beiden (HLA-A2- CD45-) tragen. Darüber hinaus rekrutierten die Antikörper beider Ansätze T-Zellen zur Zerstörung von Tumorzellen in vitro
Künzel, Franziska. "Generierung von Antikörper-Bibliotheken und Selektion von Antikörpern gegen die Integrine αvβ5 und α5β1 mittels Phagen-Display-Technologie." Doctoral thesis, 2008. http://hdl.handle.net/11858/00-1735-0000-0006-AF49-B.
Full textUlrich, Jakob Johannes. "Checkpoint inhibierende anti-TNFRSF Rezeptor Antikörper-Fusionsproteine." Doctoral thesis, 2021. https://doi.org/10.25972/OPUS-24156.
Full textCheckpoint inhibiting anti-TNFRSF receptor antibody fusion proteins should be prepared and characterized. The agonistic activity of TNFR-specific antibodies is significantly influenced by immobilization via Fcγ receptors. In this work, immobilization of the antibody fusion proteins was performed via the PD-L1. Functional assays revealed an increase in activity of TNFR-specific domains using PD-L1-mediated immobilization
Stich, Oliver. "Antikörper gegen Saccharomyces cerevisiae bei Morbus Crohn." Doctoral thesis, 2001. https://nbn-resolving.org/urn:nbn:de:bvb:20-opus-754.
Full textAnti-Saccharomyces cerevisiae Antibodies in Inflammatory Bowel Disease: a Family Study Background: Antibodies to the yeast Saccharomyces cerevisiae (ASCA) have been discribed as specific and sensitive markers for Crohn´s disease (CD). The reason for this disease specific generation of antibodies is not clear. Therefore, a family study was performed to evaluate whether the antibody production was due to genetic or environmental factors. Methods: 74 patients with CD, 25 patients with ulcerative colitis (UC), their healthy 267 first-degree relatives, and 38 spouses were included. As controls, 38 sera from healthy persons and 31 sera from patients with various autoimmune disorders were tested for ASCA by indirect immunofluorescence and ELISA. Results: ASCA werde detected in 68,8 per cent (p smaller than 0,0005) of the patients with CD, while ASCA was not found significant in controls, UC patients included. Small bowel disease or involvement of small and large bowel shows significant more frequent antibodies to saccharomyces cerevisiae than pure colon involvement (61,1 per cent, 76,6 per cent vs. 47,6 per cent, p smaller than 0,025). 20,4 per cent (p smaller than 0,01) of the first-degree relatives of patients with CD were ASCA-positive, but also 11,6 per cent (n.s.) of the relatives of patients with UC. There was no difference in the horizontal or vertical distribution of ASCA in the first-degree relatives. ASCA status of relatives was not related to sex or the fact whether these persons lived in the same household with the patients or not. Also there was no statistical significant relation between ASCA status of the MC patients and their relatives. ASCA was not related to subclinical complains of relatives associated with CD. ASCA was not found significant in spouses. Conclusions: ASCA are specific and sensitive markers for CD. The prevalence of ASCA also depends on site of bowel involvement. Since these antibodies are found in 20,4 per cent of healthy first-degree relatives and not in spouses, the generation of ASCA may be mainly related to genetic influence and reflects a defect in immune regulation although environmental factors may also play a certain role. The prevalence of ASCA in relatives of UC patients may point to a common genetic background of both diseases and ASCA would be one predisposing factor for inflammatory bowel disease in this context
Kierspe, Michael [Verfasser]. "Antigastrale Antikörper in der Pathogenese der Helicobacter-pylori-Gastritis : Antikörper-Gewinnung mit der WICK-Technik / vorgelegt von Michael Kierspe." 2009. http://d-nb.info/997741732/34.
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