Related Experiment Video
Updated: Feb 23, 2026
09:43
Fine-tuning the Size and Minimizing the Noise of Solid-state Nanopores
Published on: October 31, 2013
14.2K
Length-independent DNA packing into nanopore zero-mode waveguides for low-input DNA sequencing
Joseph Larkin1, Robert Y Henley1, Vivek Jadhav1
1Department of Physics, Northeastern University, Boston, Massachusetts 02115, USA.
Nature Nanotechnology
|September 12, 2017
Summary
This study introduces voltage-induced DNA loading for single-molecule real-time (SMRT) sequencing, dramatically improving efficiency for low-input DNA quantities. This breakthrough enables faster, more accessible DNA sequencing and epigenomic mapping.
Area of Science:
- Molecular Biology
- Genomics
- Biotechnology
Background:
- Single-molecule real-time (SMRT) DNA sequencing offers advantages like long reads and base modification detection.
- Current SMRT sequencing is limited by inefficient DNA delivery into sequencing chambers, especially for low-input samples.
Purpose of the Study:
- To develop a highly efficient method for loading DNA into zero-mode waveguides for SMRT sequencing.
- To enable DNA sequencing from sub-nanogram quantities of DNA.
Main Methods:
- Utilized voltage-induced DNA loading through nanopores at the base of zero-mode waveguides.
- Demonstrated proof-of-principle sequencing of a 20,000-base-pair DNA template.
Main Results:
- Achieved a five-order-of-magnitude increase in DNA loading efficiency compared to existing methods.
- DNA loading efficiency was found to be nearly length-independent.
- Successfully performed four-colour sequence readout within seconds from sub-nanogram DNA input.
Conclusions:
- Voltage-induced DNA loading overcomes a major bottleneck in low-input SMRT DNA sequencing.
- This method advances the potential for epigenomic mapping of native DNA samples and broadens accessibility to SMRT sequencing.
