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Issue 36, 2015
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Multivalent DNA recognition by self-assembled clusters: deciphering structural effects by fragments screening and evaluation as siRNA vectors

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Abstract

The identification of low-molecular-weight clusters that effectively complex oligonucleotides of therapeutic interest is of great importance for applications in gene delivery. We recently reported the use of self-assembly processes based on chemoselective ligation in order to generate biomolecular clusters for the multivalent recognition of DNA. Herein, we exploit the modularity of this methodology to perform a one-pot fragments screening of scaffolds and binding groups. Structural parameters affecting DNA binding were observed and hits have been identified by fluorescence displacement and gel electrophoresis assays. Finally, we evaluated the potential of these systems for siRNA transfection. One biomolecular cluster was found to effectively complex and transport a 21-mer siRNA inside MCF7 human breast cancer cells, resulting in a significant knockdown of the target gene.

Graphical abstract: Multivalent DNA recognition by self-assembled clusters: deciphering structural effects by fragments screening and evaluation as siRNA vectors

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Supplementary files

Article information


Submitted
10 Jul 2015
Accepted
31 Jul 2015
First published
06 Aug 2015

Org. Biomol. Chem., 2015,13, 9427-9438
Article type
Paper

Multivalent DNA recognition by self-assembled clusters: deciphering structural effects by fragments screening and evaluation as siRNA vectors

E. Bartolami, Y. Bessin, N. Bettache, M. Gary-Bobo, M. Garcia, P. Dumy and S. Ulrich, Org. Biomol. Chem., 2015, 13, 9427
DOI: 10.1039/C5OB01404B

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