Publication: Tiyollü Lipitlerle Oluşturulan Yüzey Destekli Lipit Katmanlar
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Moleküler Biyoloji-Genetik ve Biyoteknoloji
Molecular Biology and Genetics
Molecular Biology and Genetics
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Fen Bilimleri Enstitüsü
Institute of Science and Technology
Institute of Science and Technology
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Yüzey destekli biyomimetik lipid katmanlar biyolojik membranların ve onları oluşturan lipid ve protein moleküllerinin temel özelliklerini araştırmak için önem arz eden model membran sistemleridir. Yüksek stabiliteye sahip olmaları üzerlerinde uzun dönemli deneylerin yapılmasına olanak sağlamaktadır. Örneğin, membran proteinlerini temel alan ilaç görüntüleme platformları oluşturma gibi çok sayıda pratik uygulamanın olabilirliğini de bizlere sunmaktadır. Bu model membran sistemleri, yüzey plazmon rezonans (SPR) gibi yüzeye hassas problar ve disipasyon ölçümlü quartz kristal mikroterazi (QCM-D) gibi akustik sensörlerin kullanımına da izin vermektedir. Bu çalışmada, tiyollü lipitlerin altın yüzeyler üzerinde lipid katmanlar oluşturmasındaki etkilerinin incelenmesi amaçlanmıştır. PC lipozomlarının yapısına DGPE lipitlerinin eklenmesi PC-DGPE lipozomlarının parçalanıp yüzeye yayılarak çift katmanlı lipit yapısı oluşturdukları fikrini vermektedir.
Biomimetic lipid bilayer platforms on solid supports are important model membrane systems to study the fundamental properties of biological membranes and their constituent lipid and protein molecules. They also offer a possibility for numerous practical applications, such as the construction of drug screening platforms based on membrane proteins. They allow the usage of surface-sensitive probes such as surface plasmon resonance (SPR) and acoustic sensors such as the quartz crystal microbalance with dissipation monitoring (QCM-D). Both QCM-D and SPR can supply information about adsorption events on surfaces and the properties of the resulting lipid films in real-time using frequency-dissipation changes (Δf-ΔD) and refractive index shift, respectively. In this study, the aim was to determine the effect of thiolated lipids (DGPE) on the construction of these lipid bilayers on gold surfaces. The addition of DGPE to phosphatidylcholine (PC) liposomes was found to lead to the formation of a bilayer on the gold surface as opposed to the PC liposomes and the presence of thiol groups help the attachment of liposomes even to the unoxidized gold surface.
Biomimetic lipid bilayer platforms on solid supports are important model membrane systems to study the fundamental properties of biological membranes and their constituent lipid and protein molecules. They also offer a possibility for numerous practical applications, such as the construction of drug screening platforms based on membrane proteins. They allow the usage of surface-sensitive probes such as surface plasmon resonance (SPR) and acoustic sensors such as the quartz crystal microbalance with dissipation monitoring (QCM-D). Both QCM-D and SPR can supply information about adsorption events on surfaces and the properties of the resulting lipid films in real-time using frequency-dissipation changes (Δf-ΔD) and refractive index shift, respectively. In this study, the aim was to determine the effect of thiolated lipids (DGPE) on the construction of these lipid bilayers on gold surfaces. The addition of DGPE to phosphatidylcholine (PC) liposomes was found to lead to the formation of a bilayer on the gold surface as opposed to the PC liposomes and the presence of thiol groups help the attachment of liposomes even to the unoxidized gold surface.
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Tez (Yüksek Lisans) -- İstanbul Teknik Üniversitesi, Fen Bilimleri Enstitüsü, 2012
Thesis (M.Sc.) -- İstanbul Technical University, Institute of Science and Technology, 2012
Thesis (M.Sc.) -- İstanbul Technical University, Institute of Science and Technology, 2012
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İTÜ theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission.
İTÜ theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission.
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Yüzey Destekli Lipid Membranlar, Kuartz Kristal Mikroterazi, Yüzey Plazmon Rezonans, Tiyol uçlu fosfolipitler, Supported lipid membranes, thiol-terminated phospholipids, Quartz Crystal Microbalance, Surface Plasmon Resonance
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