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Gene-therapy Inspired Polycation Coating for Protection of DNA Origami Nanostructures
Published on: January 19, 2019
Carbon nanotubes protect DNA strands during cellular delivery
Yanrong Wu1, Joseph A Phillips, Haipeng Liu
1Center for Research at Bio/nano Interface, Department of Chemistry, University of Florida, Gainesville, Florida 32611-7200, USA.
ACS Nano
|February 12, 2009
Summary
Single-walled carbon nanotubes enhance DNA probe stability and delivery into cells. This protects probes from degradation and improves intracellular measurements for genomic studies.
Area of Science:
- Biotechnology
- Nanotechnology
- Genomics
Background:
- Oligonucleotides require stability for intracellular delivery to prevent degradation by nucleases or binding proteins.
- Current methods for intracellular DNA probe delivery face challenges with biostability and self-delivery capabilities.
Purpose of the Study:
- To develop a method for enhancing the stability and intracellular delivery of single-stranded DNA probes.
- To evaluate the protective attributes and self-delivery capability of DNA probes conjugated with single-walled carbon nanotubes.
Main Methods:
- Conjugation of single-stranded DNA probes with single-walled carbon nanotubes.
- Assessment of biostability against nuclease digestion and single-strand binding proteins.
- Evaluation of self-delivery capability and intracellular performance in living cells.
Main Results:
- Single-walled carbon nanotube conjugation significantly improved the biostability of DNA probes.
- The modified DNA probes demonstrated enhanced protection against enzymatic cleavage and protein interactions.
- Single-walled carbon nanotube-modified DNA probes exhibited increased self-delivery and intracellular biostability compared to free probes.
Conclusions:
- Single-walled carbon nanotubes serve as effective carriers for enhancing DNA probe stability and intracellular delivery.
- This novel conjugate offers significant advantages for intracellular measurements and basic genomic studies.
- The improved biostability and delivery are crucial for monitoring intracellular molecules using DNA probes.
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