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Supramolecular aptamer-thrombin linear and branched nanostructures
Yossi Weizmann1, Adam B Braunschweig, Ofer I Wilner
1Institute of Chemistry, The Hebrew University of Jerusalem, Jerusalem, 91904, Israel.
Chemical Communications (Cambridge, England)
|October 22, 2008
Summary
Alpha and beta aptamers act as bidentate "glue" to assemble thrombin nanowires. Mixing these with a tripodal alpha aptamer creates branched thrombin nanowire structures.
Area of Science:
- Biochemistry
- Nanotechnology
- Molecular Biology
Background:
- Aptamers are short nucleic acid sequences with high affinity for specific targets.
- Self-assembly of nanomaterials offers novel approaches for constructing complex structures.
- Thrombin is a key enzyme in coagulation, making it a target for therapeutic and diagnostic applications.
Purpose of the Study:
- To investigate the self-assembly of thrombin nanowires using aptamers.
- To explore the formation of branched thrombin nanowire structures.
Main Methods:
- Utilizing alpha and beta conjugated bis-aptamers as bidentate ligands for thrombin.
- Employing a tripodal tridentate alpha aptamer construct for branched assembly.
- Characterizing the self-assembled thrombin nanostructures.
Main Results:
- Bidentate aptamers successfully mediated the self-assembly of linear thrombin nanowires.
- Mixing bidentate aptamers with the tripodal aptamer construct resulted in branched thrombin nanowire architectures.
- The aptamer design dictates the morphology of the self-assembled thrombin nanostructures.
Conclusions:
- Aptamer-based self-assembly provides a versatile strategy for constructing thrombin nanostructures.
- The bidentate and tripodal aptamer constructs offer precise control over nanowire assembly.
- These findings have implications for developing aptamer-based nanomaterials for various applications.
