Homann, Matthias ; Lorger, Mihaela ; Engstler, Markus ; Zacharias, Martin ; Göringer, H. Ulrich (2006)
Serum-stable RNA aptamers to an invariant surface domain of live African trypanosomes.
In: Combinatorial chemistry & high throughput screening, 9 (7)
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
African trypanosomes are extracellular blood parasites that cause sleeping sickness in humans and Nagana in cattle. The therapeutics used to control and treat these diseases are very ineffective and thus, the development of new drugs is urgently needed. We have previously suggested to use trypanosome-specific RNA aptamers as tools for the development of novel trypanocidal compounds. Here, we report the selection of a 2'-NH(2)-modified RNA aptamer that binds to live trypanosomes with an affinity of 70 +/- 15 nM. The aptamer adopts a stable G-quartet structure and has a half-life in human serum of > 30 h. RNA binding is restricted to the flagellar attachment zone, located between the cell body and the flagellum of the parasite. We demonstrate that antigen-tagged preparations of the aptamer can bind to live trypanosomes and that they can be used to re-direct immunoglobulins to the parasite surface.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2006 |
| Autor(en): | Homann, Matthias ; Lorger, Mihaela ; Engstler, Markus ; Zacharias, Martin ; Göringer, H. Ulrich |
| Art des Eintrags: | Bibliographie |
| Titel: | Serum-stable RNA aptamers to an invariant surface domain of live African trypanosomes. |
| Sprache: | Englisch |
| Publikationsjahr: | 2006 |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Combinatorial chemistry & high throughput screening |
| Jahrgang/Volume einer Zeitschrift: | 9 |
| (Heft-)Nummer: | 7 |
| Kurzbeschreibung (Abstract): | African trypanosomes are extracellular blood parasites that cause sleeping sickness in humans and Nagana in cattle. The therapeutics used to control and treat these diseases are very ineffective and thus, the development of new drugs is urgently needed. We have previously suggested to use trypanosome-specific RNA aptamers as tools for the development of novel trypanocidal compounds. Here, we report the selection of a 2'-NH(2)-modified RNA aptamer that binds to live trypanosomes with an affinity of 70 +/- 15 nM. The aptamer adopts a stable G-quartet structure and has a half-life in human serum of > 30 h. RNA binding is restricted to the flagellar attachment zone, located between the cell body and the flagellum of the parasite. We demonstrate that antigen-tagged preparations of the aptamer can bind to live trypanosomes and that they can be used to re-direct immunoglobulins to the parasite surface. |
| Fachbereich(e)/-gebiet(e): | 10 Fachbereich Biologie > Genregulation und RNA-Therapeutika ?? fb10_mikrobiologie ?? 10 Fachbereich Biologie |
| Hinterlegungsdatum: | 03 Nov 2011 13:03 |
| Letzte Änderung: | 05 Mär 2013 09:55 |
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