Cited by 20RNA Interference and Gene DeliveryDNA and Nucleic Acid ChemistryRNA Research and Splicing

Novel Oligonucleotides Containing Two 3′-Ends Complementary to Target mRNA Show Optimal Gene-Silencing Activity

Bhagat, Lakshmi, Putta, Mallikarjuna Reddy, Wang, Daqing, Yu, Dong, Lan, Tao, Jiang, Weiwen, Sun, Zhenhua, Wang, Hao +4 more·2011·Journal of Medicinal Chemistry

Abstract

Oligonucleotides are being employed for gene-silencing activity by a variety of mechanisms, including antisense, ribozyme, and siRNA. In the present studies, we designed novel oligonucleotides complementary to targeted mRNAs and studied the effect of 3'-end exposure and oligonucleotide length on gene-silencing activity. We synthesized both oligoribonucleotides (RNAs) and oligodeoxynucleotides (DNAs) with phosphorothioate backbones, consisting of two identical segments complementary to the targeted mRNA attached through their 5'-ends, thereby containing two accessible 3'-ends; these compounds are referred to as gene-silencing oligonucleotides (GSOs). RNA and/or DNA GSOs targeted to MyD88, VEGF, and TLR9 mRNAs had more potent gene-silencing activity than did antisense phosphorothioate oligonucleotides (PS-oligos) in cell-based assays and in vivo. Of the different lengths of GSOs evaluated, 19-mer long RNA and DNA GSOs had the best gene-silencing activity both in vitro and in vivo. These results suggest that GSOs are novel agents for gene silencing that can be delivered systemically with broader applicability.

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Crossref · 10.1021/jm200113t

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Authors
Bhagat, L., Putta, M. R., Wang, D., Yu, D., Lan, T., Jiang, W., Sun, Z., Wang, H., Tang, J. X., La Monica, N., Kandimalla, E. R., & Agrawal, S.
Affiliations
  • Idera Pharmaceuticals (United States) (US)
  • Idera Pharmaceuticals, Inc., 167 Sidney Street, Cambridge, Massachusetts 02139, United States
Corresponding author
Agrawal, Sudhir
Venue
Journal of Medicinal Chemistry
Published
2011-04-05
Volume
54
Issue
8
Pages
3027-3036
ISSN
  • 0022-2623 (ISSN-L)
  • 1520-4804
OpenAlex
W2326623357
Cited by
20
References
63
Citations by year
2026: 2 · 2024: 1 · 2023: 2 · 2021: 2 · 2020: 1 · 2019: 2 · 2018: 1 · 2017: 3 · 2016: 1 · 2015: 1 · 2014: 1 · 2013: 2
FWCI
0.39
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Medicinal Chemistry (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › RNA Interference and Gene Delivery
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › DNA and Nucleic Acid Chemistry
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › RNA Research and Splicing
Keywords
gene silencing, oligonucleotides, oligoribonucleotides, oligodeoxynucleotides, phosphorothioate backbone, antisense oligonucleotides, oligonucleotide length, MyD88, vascular endothelial growth factor, TLR9, siRNA, ribozymes, systemic drug delivery
MeSH terms
Animals, Base Sequence, Cell Line, Humans, Oligonucleotides, RNA, Messenger, DNA Primers, Gene Silencing, Mice, Myeloid Differentiation Factor 88

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