Dissertations / Theses on the topic 'Biokonjugation'
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Schroedter, Andrea. "Biokonjugation und Selbstorganisation von Gold- und Halbleiter-Nanokristallen." [S.l. : s.n.], 2002. http://deposit.ddb.de/cgi-bin/dokserv?idn=966302699.
Full textCastillo, Gómez Juan Daniel [Verfasser]. "Kopplungsfähige Thiocarbamoylbenzamidine als Liganden zur Biokonjugation von Rhenium und Technetium / Juan Daniel Castillo Gómez." Berlin : Freie Universität Berlin, 2015. http://d-nb.info/1070820024/34.
Full textRoth, Patrick [Verfasser], and Ulrich [Gutachter] Schatzschneider. "Metalltricarbonyl-basierte CO-releasing molecules (CORMs): Variation der Freisetzungskinetik und Biokonjugation / Patrick Roth ; Gutachter: Ulrich Schatzschneider." Würzburg : Universität Würzburg, 2021. http://d-nb.info/1236547950/34.
Full textSteinmeyer, Jeannine [Verfasser], and H. A. [Akademischer Betreuer] Wagenknecht. "Biokonjugation eines Farbstoffpaares als fluoreszentes Modul für siRNA, Aptamere und boronsäuremodifizierte DNA / Jeannine Steinmeyer ; Betreuer: H.-A. Wagenknecht." Karlsruhe : KIT-Bibliothek, 2018. http://d-nb.info/1170230490/34.
Full textHorstmann, Benjamin [Verfasser], Markus [Akademischer Betreuer] Biesalski, Franz-Josef [Akademischer Betreuer] Meyer-Almes, Harald [Akademischer Betreuer] Kolmar, and Christina [Akademischer Betreuer] Thiele. "Stimulussensitive Polymersysteme zur Biokonjugation an Proteinen am Beispiel der Histondeacetylase-ähnliche Amidohydrolase / Benjamin Horstmann. Betreuer: Markus Biesalski ; Franz-Josef Meyer-Almes ; Harald Kolmar ; Christina Thiele." Darmstadt : Universitäts- und Landesbibliothek Darmstadt, 2015. http://d-nb.info/1112044299/34.
Full textZarafshani, Zoya. "Chain-end functionalization and modification of polymers using modular chemical reactions." Phd thesis, Universität Potsdam, 2012. http://opus.kobv.de/ubp/volltexte/2012/5972/.
Full textIn dieser Arbeit wurden mittels der ATRP Methode sowie durch Benutzung funktioneller Initiatoren verschiedene Funktionalitäten an der α- und ω-Position der synthetischen Polymere (Kettenenden) eingeführt. Diese funktionalisierten Polymere können durch modulare synthetische Methoden wie z.B. die “Klick-Zykloaddition” (kupferkatalysiert oder auch kupferfreie Methoden möglich), Amidierung mit anderen synthetischen Polymeren oder Biomolekülen, oder auch mit Silikatmonolithen gekuppelt werden. Den beschriebenen Strategien folgend und unter Benutzung von thermoresponsiven, bioinerten und biokompartiblen (Co-) Polymeren mit einstellbaren Trübungspunkten können mittels Temperaturänderungen leicht steuerbare, „smarte“ Polymersysteme für verschiedene Anwendungen hergestellt werden. Im Rahmen dieser Arbeit wurden speziell Anwendungen wie die Postfunktionalisierung (in situ Funktionalisierung mizellarer Aggregate mit Molekülen, die sowohl niedrige als auch höhere Molekulargewichte aufweisen), hydrophiles/hydrophobes Tuning von Polymeren, Chromatographie an Polymeren sowie Biokonjugation von Polymeren (Enzymthermoprezipitation und -Gewinnung, Enzymaktivitätsmodifizierung) genauer untersucht. Es wurden verschiedene α-funktionalisierte (Co-)Polymere, die Cholesterol, Aldehyde, t-Boc geschützte Amine, TMS-geschützte Alkine und NHS-aktivierte Ester entwickelt und hergestellt und mittels passender ATRP Initiatoren eingeführt.
Ennen, Franka, Susanne Boye, Albena Lederer, Mihaela Cernescu, Hartmut Komber, Bernhard Brutschy, Brigitte Voit, and Dietmar Appelhans. "Biohybrid structures consisting of biotinylated glycodendrimers and proteins: influence of the biotin ligand’s number and chemical nature on the biotin–avidin conjugation." Royal Society of Chemistry, 2014. https://tud.qucosa.de/id/qucosa%3A36421.
Full textFerl, Sandra, Gerd Wunderlich, René Smits, Alexander Hoepping, Anne Naumann, and Jörg Kotzerke. "Synthesis of a new HYNIC-DAPI derivative for labelling with ⁹⁹ᵐTechnetium and its in vitro evaluation in an FRTL5 cell line." Royal Society of Chemistry, 2015. https://tud.qucosa.de/id/qucosa%3A36278.
Full textGuhrenz, Chris, Vladimir Sayevich, Florian Weigert, Eileen Hollinger, Annett Reichhelm, Ute Resch-Genger, Nikolai Gaponik, and Alexander Eychmüller. "Transfer of Inorganic-Capped Nanocrystals into Aqueous Media." American Chemical Society, 2017. https://tud.qucosa.de/id/qucosa%3A33352.
Full textBaumann, Alice Leonie. "Electrophilic Phosphonothiolates for Cysteine-selective Bioconjugations." Doctoral thesis, Humboldt-Universität zu Berlin, 2020. http://dx.doi.org/10.18452/22194.
Full textIn this work, unsaturated vinyl- and ethynylphosphonothiolates were synthesised and used as linkers for cysteine-selective protein modifications. First, a synthetic route for the generation of unsaturated phosphonothiolates was developed, using unsaturated phosphonites and electrophilic disulfides as starting materials. The high chemoselectivity of this reaction enabled the introduction of vinylphosphonothiolates on unprotected model peptides and the protein ubiquitin. It could then be shown that unsaturated phosphonothiolates react selectively with thiols under neutral to slightly basic conditions and are therefore suitable as linkers for cysteine-selective protein modifications. The versatility of the herein developed bioconjugation method was demonstrated in three applications. First, starting from the vinylphosphonothiolate-modified ubiquitin, homogeneous ubiquitin-protein conjugates could be generated, in particular a non-hydrolyzable diubiquitin conjugate and a ubiquitin-α-synuclein conjugate. Second, the suitability of unsaturated phosphonothiolates as linkers for the generation of stable antibody-drug conjugates was tested. Vinylphosphonothiolate linkers thereby showed potential to produce stable antibody conjugates. Finally, vinylphosphonothiolates were used as linkers to conjugate both chaperone-binding antibodies and deubiquitinases (DUBs) to photo-reactive crosslinkers in order to investigate dynamic protein interactions. Overall, the herein developed methodology enables the chemoselective conversion of electrophilic disulfides into electrophilic vinyl- and ethynylphosphonothiolates, which in turn react selectively with thiols. As a result, two complex, thiol-containing molecules can be selectively conjugated, which is particularly important for the production of homogeneously modified peptide and protein conjugates.
Gamrad, Lisa [Verfasser], Stephan [Akademischer Betreuer] Barcikowski, and Wiebke [Gutachter] Hansen. "Rationelles Design und biomedizinische Anwendung von multifunktionalen Goldnanopartikel-Biokonjugaten / Lisa Gamrad ; Gutachter: Wiebke Hansen ; Betreuer: Stephan Barcikowski." Duisburg, 2017. http://d-nb.info/1132510562/34.
Full textKasper, Marc-André. "Chemoselective synthesis of functional drug conjugates." Doctoral thesis, Humboldt-Universität zu Berlin, 2020. http://dx.doi.org/10.18452/20870.
Full textThe present work introduces a modular reaction sequence of two chemoselective manipulations in a row. It is shown that vinyl- and ethynylphosphonamidates react selectively with cysteine residues on proteins and antibodies. Most importantly, those electrophilic phosphonamidates can be incorporated into a given molecule in another preceding chemoselective Staudinger-phosphonite reaction (SPhR) from unsaturated phosphonites and azides. During this reaction, an electron-rich phosphonite is transformed into an electron-deficient phosphonamidate that is thereby activated for the subsequent thiol addition. The described technique thereby extends the existing repertoire of bioconjugations by introducing a new concept in protein synthesis: A chemoselective reaction that induces reactivity for a subsequent bioconjugation. Since phosphonamidate conjugations to cysteine hold outstanding features such as high selectivity for cysteine, clean reaction products and excellent stability of the protein adducts in biological environments, it is described in the second part of the present work how ethynylphosphonamidates can be employed for the conjunction of tumor-sensing antibodies and cytotoxic drugs to generate Antibody-Drug-Conjugates (ADCs). A simple synthetic protocol starting from unengineered antibodies, using only a slight excess of the desired drug in a one-pot synthesis protocol is introduced. In a direct comparison to the maleimide containing FDA-approved Adcetris, phosphonamidate linked ADCs show a superior behaviour in terms of linkage stability in serum, combined with an increased in vivo efficacy in a tumor xenograft mouse model. Taken together, the method described herein combines simple synthetic access with high selectivity, superior conjugate stability and the possibility to synthesize highly efficacious drug conjugates and is therefore likely to have a great contribution to the field of targeted therapeutics.
Gehring, Manuela [Verfasser], and Horst [Akademischer Betreuer] Weller. "Untersuchungen zur Stabilität von Halbleiternanopartikeln, deren Biokonjugationen mittels Staudinger Ligation und Zellaufnahmestudien solcher Systeme / Manuela Gehring. Betreuer: Horst Weller." Hamburg : Staats- und Universitätsbibliothek Hamburg, 2014. http://d-nb.info/105193558X/34.
Full textBerger, Christina [Verfasser], and Dirk Michael [Akademischer Betreuer] Guldi. "Bioconjugates of Fluorescent CdTe Quantum Dots = Entwicklung und Untersuchung von Biokonjugaten mit fluoreszierenden CdTe Quanten Punkten [[Elektronische Ressource]] / Christina Berger. Gutachter: Dirk Michael Guldi." Erlangen : Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 2015. http://d-nb.info/1076673791/34.
Full textRoth, Patrick. "Metalltricarbonyl-basierte CO-releasing molecules (CORMs): Variation der Freisetzungskinetik und Biokonjugation." Doctoral thesis, 2021. https://doi.org/10.25972/OPUS-24017.
Full textIn many organisms, carbon monoxide is generated in a controlled fashion by the degradation of heme by heme oxygenase (HO) enzymes. This small signaling molecule is involved in the control of blood pressure and possess anti-inflammatory, anti-apoptotic, and cytoprotective properties. However, a key issue is the tissue-specific delivery of carbon monoxide without concomitant formation of elevated toxic levels of CO in blood. In that context, metal carbonyl complexes show great potential for a safe CO delivery in a spatially and temporally well-controlled manner. Such CO-releasing molecules (CORMs) are composed of an inner "CORM sphere", which determines the CO release kinetics, and an outer "drug sphere", which controls bioavailability and tissue-specific uptake. In the context of this work, a series of photoactivatable CO-releasing molecules based on manganese(I) tricarbonyl groups was synthesized. In these systems, the octahedral coordination sphere of the metal center is completed by a variety of facial tridentate N^N^N ligands. Derivatives of bis(2-pyridylmethyl)amine (bpa) were selected as the chelator, in which the central tertiary nitrogen atom is functionalized with alkylamines of different chain lengths that can be linked to carboxylate-modified biological carrier molecules via amide bonds. The series of bpa ligands was contrasted with a novel ligand system based on N-(phenanthridin-6-ylmethyl)-N-(quinolin-2-ylmethyl)ethane-1,2-diamine (pqen), in which the phenanthridine group possesses interesting photophysical and photochemical properties. The series of CO-releasing molecules was complemented with the isostructural rhenium(I) tricarbonyl complexes, which might serve as markers for fluorescence microscopy
Schroedter, Andrea [Verfasser]. "Biokonjugation und Selbstorganisation von Gold- und Halbleiter-Nanokristallen / vorgelegt von Andrea Schroedter." 2002. http://d-nb.info/966302699/34.
Full textHorstmann, Benjamin. "Stimulussensitive Polymersysteme zur Biokonjugation an Proteinen am Beispiel der Histondeacetylase-ähnliche Amidohydrolase." Phd thesis, 2015. https://tuprints.ulb.tu-darmstadt.de/5012/1/BHorstmann_Dissertation.pdf.
Full textNeukamm, Merja [Verfasser]. "Synthese und biologische Aktivität von Cobaltcarbonyl-Alkin-Peptid-Biokonjugaten / vorgelegt von Merja Neukamm." 2007. http://d-nb.info/987549960/34.
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