Corporate Banner
Satellite Banner
Genomics
Scientific Community
 
Become a Member | Sign in
Home>News>This Article
  News
Return

New System to Improve DNA Sequencing

Published: Tuesday, April 09, 2013
Last Updated: Tuesday, April 09, 2013
Bookmark and Share
A sensing system developed at Cambridge is being commercialised in the UK for use in rapid, low-cost DNA sequencing.

System would make the prediction and diagnosis of disease more efficient and individualised treatment more affordable.

Dr Ulrich Keyser of the University’s Cavendish Laboratory, along with PhD student Nick Bell and other colleagues, has developed a system which combines a solid-state nanopore with a technique known as DNA origami, for use in DNA sequencing, protein sensing and other applications. The technology has been licensed for development and commercialisation to UK-based company Oxford Nanopore, which is developing portable, low-cost DNA analysis sequencing devices.

Nanopore technology has the potential to revolutionise DNA sequencing and the analysis of a range of other biological molecules, providing dramatic improvements in power, cost and speed over current methods.

A nanopore is an extremely small hole - between one and 100 nanometres in diameter – typically contained in a membrane between two chambers containing a salt solution and the molecule of interest. When the molecules pass through the nanopores, they disrupt an ionic current through the nanopore and this difference in electrical signals allows researchers to determine certain properties of those molecules.

Over the past decade, researchers have been investigating various methods of constructing nanopores in order to improve accuracy and reliability. A key part of this is the ability to finely control the shape and surface chemistry of the nanopores, which would maximise sensitivity and facilitate the identification of a wider range of molecules.

Currently, there are two main types of nanopores in use: solid state nanopores constructed by fabricating tiny holes in silicon or graphene with electron beam equipment; and biological nanopores made by inserting pore-forming proteins into a biological membrane such as a lipid bilayer.

Biological nanopores are cheap and easy to manufacture in large quantities of identical pores.  It is possible through genetic engineering to define their structure at the atomic level, varying the pores for the analysis of different target molecules. However, they are only suitable for a limited range of applications, and may be replaced over time by solid-state nanopores. At present, solid-state nanopores are difficult to manufacture and are not as sensitive as biological nanopores, as it is difficult to position specific chemical groups on the surface.

In collaboration with researchers at Ludwig Maximilian University in Munich, Dr Keyser and his team have developed a hybrid nanopore which combines a solid-state material, such as silicon or graphene, and DNA origami - small, well-controlled shapes made of DNA.

“The DNA origami structures can be formed into any shape, allowing highly accurate control of the size and shape of the pore, so that only molecules of a certain shape can pass through,” says Dr Keyser. “This level of control allows for far more detailed analysis of the molecule, which is particularly important for applications such as phenotyping or gene sequencing.”

Since complementary sequences of DNA can bind to one another, the origami structures can be customised so that functional groups, fluorescent compounds and other molecular adapters can be added to the DNA strands with sub-nanometre precision, improving sensitivity and reliability. Additionally, hundreds of billions of self-assembling origami structures can be produced at the same time, with yields of up to 90 per cent.

Recent research by the team, published in the journal Lab on a Chip, has shown that up to 16 measurements can be taken simultaneously, allowing for much higher data throughput and screening of different DNA origami structures.


Further Information

Join For Free

Access to this exclusive content is for Technology Networks Premium members only.

Join Technology Networks Premium for free access to:

  • Exclusive articles
  • Presentations from international conferences
  • Over 3,100+ scientific posters on ePosters
  • More than 4,500+ scientific videos on LabTube
  • 35 community eNewsletters


Sign In



Forgotten your details? Click Here
If you are not a member you can join here

*Please note: By logging into TechnologyNetworks.com you agree to accept the use of cookies. To find out more about the cookies we use and how to delete them, see our privacy policy.

Related Content

A Shaggy Dog Story: The Contagious Cancer That Conquered The World
A contagious form of cancer that can spread between dogs during mating has highlighted the extent to which dogs accompanied human travellers throughout our seafaring history. But the tumours also provide surprising insights into how cancers evolve by ‘stealing’ DNA from their host.
Wednesday, May 18, 2016
Number Of Known Genetic Risk Factors For Endometrial Cancer Doubled
An international collaboration of researchers has identified five new gene regions that increase a woman’s risk of developing endometrial cancer, one of the most common cancers to affect women, taking the number of known gene regions associated with the disease to nine.
Wednesday, May 04, 2016
Genetic Variant May Help Explain Why Labradors Are Prone To Obesity
A genetic variation associated with obesity and appetite in Labrador retrievers – the UK and US’s favourite dog breed – has been identified by scientists at the University of Cambridge. The finding may explain why Labrador retrievers are more likely to become obese than dogs of other breeds.
Wednesday, May 04, 2016
Limbs May Have Evolved From Sharks’ Gills
Latest analysis shows that human limbs share a genetic programme with the gills of cartilaginous fishes such as sharks and skates, providing evidence to support a century-old theory on the origin of limbs that had been widely discounted.
Wednesday, April 20, 2016
Could the Food we Eat Affect Our Genes?
Almost all of our genes may be influenced by the food we eat, according to new research.
Friday, February 12, 2016
Ancient Genome from Africa Sequenced for the First Time
DNA from 4,500-year-old Ethiopian skull reveals a huge migratory wave of West Eurasians into the Horn of Africa around 3,000 years ago had a genetic impact on modern populations right across the African continent.
Monday, October 19, 2015
Greater Understanding Of Polycystic Ovary Syndrome
A new genetic study of over 200,000 women reveals the underlying mechanisms of polycystic ovary syndrome, as well as potential interventions.
Wednesday, September 30, 2015
Maintaining Healthy DNA Delays Menopause
An international study of nearly 70,000 women has identified more than forty regions of the human genome that are involved in governing at what age a woman goes through menopause.
Tuesday, September 29, 2015
New Consortium to Develop and Study Early Stage Drugs
An innovative new Consortium will act as a ‘match-making’ service between pharmaceutical companies and researchers in Cambridge with the aim of developing and studying precision medicines for some of the most globally devastating diseases.
Thursday, July 30, 2015
Expression of Certain Genes Changes with the Seasons
As the seasons change, so do the expression levels of many human genes, including ones involved in immune function, according to new research.
Thursday, May 14, 2015
Gene Discovery Provides Clues To How TB May Evade The Immune System
The largest genetic study of TB susceptibility to date has led to a potentially important new insight into how the pathogen manages to evade the immune system.
Tuesday, March 17, 2015
Human Genome Includes 'Foreign' Genes Not From Our Ancestors
Many animals, including humans, acquired essential ‘foreign’ genes from microorganisms co-habiting their environment in ancient times, according to research published in the open access journal Genome Biology.
Monday, March 16, 2015
Order Matters: Sequence Of Genetic Mutations Determines How Cancer Behaves
The order in which genetic mutations are acquired determines how an individual cancer behaves, according to research from the University of Cambridge, published today in the New England Journal of Medicine.
Thursday, February 12, 2015
Using Genome Sequencing to Track MRSA in Under-resourced Hospitals
Whole genome sequencing of MRSA from a hospital in Asia has demonstrated patterns of transmission in a resource-limited setting, where formal screening procedures are not feasible.
Thursday, December 11, 2014
Amazing Feet Of Science: Researchers Sequence The Centipede Genome
What it lacks in genes, it certainly makes up for in legs: the genome of the humble centipede has been found to have around 15,000 genes – around 7,000 fewer than a human.
Wednesday, November 26, 2014
Scientific News
Benchtop Automation Trends
Gain a better understanding of current interest in and future deployment of benchtop automated systems.
First Large-Scale Proteogenomic Study of Breast Cancer
The study offers understanding of potential therapeutic targets.
Fungi – A Promising Source Of Chemical Diversity
Moulds and plants share similar ways in alkaloid biosynthesis .
Great Migration and African-American Genomic Diversity
Study examines genetic data to analyze regional differences in ancestry.
Faster, More Efficient CRISPR Editing
UC Berkeley scientists have developed a quicker and more efficient method to alter the genes of mice with CRISPR-Cas9, simplifying a procedure growing in popularity because of the ease of using the new gene-editing tool.
New Tool Could Change How Infectious Diseases Are Diagnosed
Scientists at the University of Utah School of Medicine, ARUP Laboratories, and IDbyDNA, Inc., have developed ultra-fast, meta-genomics analysis software called Taxonomer that dramatically improves the accuracy and speed of pathogen detection.
Insight into Bacterial Resilience and Antibiotic Targets
Variant of CRISPR technology paired with computerized imaging reveals essential gene networks in bacteria.
Illuminating Hidden Gene Regulators
New super-resolution technique visualizes important role of short-lived enzyme clusters.
Genes That Increase Children's Risk Of Blood Infection Identified
A team led by Oxford University has identified genes that make certain children more susceptible to invasive bacterial infections by performing a large genome-wide association study in African children.
Poverty Marks a Gene, Predicting Depression
New study of high-risk teens reveals a biological pathway for depression.
Skyscraper Banner

SELECTBIO Market Reports
Go to LabTube
Go to eposters
 
Access to the latest scientific news
Exclusive articles
Upload and share your posters on ePosters
Latest presentations and webinars
View a library of 1,800+ scientific and medical posters
3,100+ scientific and medical posters
A library of 2,500+ scientific videos on LabTube
4,500+ scientific videos
Close
Premium CrownJOIN TECHNOLOGY NETWORKS PREMIUM FOR FREE!