A1 Refereed original research article in a scientific journal

Assembly of Bleomycin Saccharide-Decorated Spherical Nucleic Acids




AuthorsTähtinen Ville, Gulumkar Vijay, Maity Sajal K., Yliperttula Ann-Mari, Siekkinen Saara, Laine Toni, Lisitsyna Ekaterina, Haapalehto Iida, Viitala Tapani, Vuorimaa-Laukkanen Elina, Yliperttula Marjo, Virta Pasi

PublisherAMER CHEMICAL SOC

Publication year2022

JournalBioconjugate Chemistry

Journal name in sourceBIOCONJUGATE CHEMISTRY

Journal acronymBIOCONJUGATE CHEM

Volume33

Issue1

First page 206

Last page218

Number of pages13

ISSN1043-1802

eISSN1520-4812

DOIhttps://doi.org/10.1021/acs.bioconjchem.1c00539

Web address https://pubs.acs.org/doi/10.1021/acs.bioconjchem.1c00539#

Self-archived copy’s web addresshttps://research.utu.fi/converis/portal/detail/Publication/174760176


Abstract

Glyco-decorated spherical nucleic acids (SNAs) may be attractive delivery vehicles, emphasizing the sugar-specific effect on the outer sphere of the construct and at the same time hiding unfavorable distribution properties of the loaded oligonucleotides. As examples of such nanoparticles, tripodal sugar constituents of bleomycin were synthesized and conjugated with a fluorescence-labeled antisense oligonucleotide (AONARV7). Successive copper(I)-catalyzed azide-alkyne and strain-promoted alkyne-nitrone cycloadditions (SPANC) were utilized for the synthesis. Then, the glyco-AONARV7 conjugates were hybridized with complementary strands of a C60-based molecular spherical nucleic acid (i.e., a hybridization-mediated carrier). The formation and stability of these assembled glyco-decorated SNAs were evaluated by polyacrylamide gel electrophoresis (PAGE), UV melting profile analysis, and time-resolved fluorescence spectroscopy. Association constants were extracted from time-resolved fluorescence data. Preliminary cellular uptake experiments of the glyco-AONARV7 conjugates (120 nM solutions) and of the corresponding glyco-decorated SNAs (10 nM solutions) with human prostate cancer cells (PC3) showed an efficient uptake in each case. A marked variation in intracellular distribution was observed.


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