Jump to main content
Jump to site search

Issue 2, 2017
Previous Article Next Article

Protecting microRNAs from RNase degradation with steric DNA nanostructures

Author affiliations

Abstract

Tumor suppressive microRNAs are potent molecules that might cure cancer, one day. Despite the many advanced strategies for delivery of these microRNAs to the cell, there are few therapeutic microRNAs in clinical use. Progress in microRNA bioapplications is hindered by a high vulnerability of exogeneous microRNA molecules to RNase degradation that occurs in extra- and intracellular physiological conditions. In this proof-of-concept study, we use a programmable self-assembled DNA nanostructure bearing a “shuriken” shape to not only deliver but more importantly protect a tumor suppressive microRNA-145 for a sufficiently long time to exert its therapeutic effect in human colorectal cancer cells. Our DNA nanostructure harbored complementary sequences that can hybridize with the microRNA cargo. This brings the microRNA–DNA duplex very close to the core structure such that the microRNA cargo becomes sterically shielded from RNase's degradative activity. Our novel DNA nanostructure based protector concept removes the degradative bottleneck that may plague other nucleic acid delivery strategies and presents a new paradigm towards exploiting these microRNAs for anti-cancer therapy.

Graphical abstract: Protecting microRNAs from RNase degradation with steric DNA nanostructures

Back to tab navigation
Please wait while Download options loads

Supplementary files

Publication details

The article was received on 26 Apr 2016, accepted on 10 Sep 2016 and first published on 14 Sep 2016


Article type: Edge Article
DOI: 10.1039/C6SC01829G
Citation: Chem. Sci., 2017,8, 1062-1067
  • Open access: Creative Commons BY-NC license
  •   Request permissions

    Protecting microRNAs from RNase degradation with steric DNA nanostructures

    H. Qian, C. Y. Tay, M. I. Setyawati, S. L. Chia, D. S. Lee and D. T. Leong, Chem. Sci., 2017, 8, 1062
    DOI: 10.1039/C6SC01829G

Search articles by author