A1 Refereed original research article in a scientific journal
Assembly of Bleomycin Saccharide-Decorated Spherical Nucleic Acids
Authors: Tähtinen 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
Publisher: AMER CHEMICAL SOC
Publication year: 2022
Journal: Bioconjugate Chemistry
Journal name in source: BIOCONJUGATE CHEMISTRY
Journal acronym: BIOCONJUGATE CHEM
Volume: 33
Issue: 1
First page : 206
Last page: 218
Number of pages: 13
ISSN: 1043-1802
eISSN: 1520-4812
DOI: https://doi.org/10.1021/acs.bioconjchem.1c00539
Web address : https://pubs.acs.org/doi/10.1021/acs.bioconjchem.1c00539#
Self-archived copy’s web address: https://research.utu.fi/converis/portal/detail/Publication/174760176
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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