The breakthrough, published in the journal Nature Materials, could offer an easier way of detecting pathogenic bacteria outside of a clinical setting and could be particularly important for the developing world, where access to more sophisticated laboratory techniques is often limited.
The research was led by Professor Cameron Alexander, Head of the Division of Drug Delivery and Tissue Engineering and EPSRC Leadership Fellow in the University's School of Pharmacy, building on work by PhD student Peter Magennis.
The image shows a) on the left hand side, aggregates of E coli labelled blue by in situ activated polymers, and b) on the right hand side E. coli clusters in suspension with bacterial-instructed polymers Schematics of the binding process are shown in the enlargement boxes of the image.
Credit: Professor Cameron Alexander The University of Nottingham UK
Professor Alexander said: "Essentially, we have hijacked some of the metabolic machinery which bacteria use to control their environment, and used it instead to grow polymers which bind strongly to the specific bacteria that produce them.
"The neat thing about this is that the functionality of the polymers grown on the surface of the bacteria is programmed by the cells so that they can recognise their own 'kind'. We used fluorescent labels to light up the polymers and were able to capture this labelling using a mobile phone camera, so in principle it could be possible to use these materials as point-of-care diagnostics for pathogenic bacteria."
The study has shown that the bacteria helped to synthesise polymers on their own surfaces which not only were different from those made by conventional methods, but which retained a form of 'structural memory' of that surface. This means in future it should be possible to make specific detection agents or additives for topical anti-infectives that target a number of harmful bacteria all by a common route.
"The initial focus of the research was to explore ways to use synthetic polymers to selectively target and bind the bacteria that cause dental cavities and periodontal diseases in order to facilitate their removal from the oral cavity," said Dr David Churchley, Principal Scientist, Oral Health Category Research and Development, GSK Consumer Healthcare. "As we continued our work, we saw that our research had broader implications and potential for a wider range of uses."
Rapidly identifying harmful bacteria at the heart of a serious medical or dental condition can be a difficult and costly task. The group's findings may even lead to new ways of treating bacterial infections. "These types of polymers may be designed to contain antibacterial functionalities so that they specifically bind to and kill bacterial pathogens," said Dr Klaus Winzer, a microbiologist at The University of Nottingham involved in the study. The selective binding of specific bacterial species and/or strains in current practice requires expensive 'cold-chain' reagents such as antibodies which often preclude using these processes outside of a hospital setting or in developing nations.
The new approach, termed 'bacterial-instructed synthesis', has the potential for use in the developing world, in the field or in less specialised laboratory settings.
Dr David Bradshaw, Principal Scientist, Oral Health Category Research and Development, GSK Consumer Healthcare, said: "The ingredients used to form the polymers are all easy to obtain, inexpensive and widely available. With the simplicity and accessibility of the chemistry, a number of diagnostic and other applications may be possible."
The study was funded by a Biotechnology and Biological Sciences Research Council (BBSRC) GSK Consumer Healthcare CASE studentship, and Professor Alexander's Engineering and Physical Research Council (EPSRC) Leadership Fellowship.
The paper will be accessible on the Nature Materials website (after the embargo has lifted) at http://dx.doi.org/10.1038/nmat3949
Emma Thorne | Eurek Alert!
New Model of T Cell Activation
27.05.2016 | Albert-Ludwigs-Universität Freiburg im Breisgau
Fungi – a promising source of chemical diversity
27.05.2016 | Leibniz-Institut für Naturstoff-Forschung und Infektionsbiologie - Hans-Knöll-Institut (HKI)
A biological and energy-efficient process, developed and patented by the University of Innsbruck, converts nitrogen compounds in wastewater treatment facilities into harmless atmospheric nitrogen gas. This innovative technology is now being refined and marketed jointly with the United States’ DC Water and Sewer Authority (DC Water). The largest DEMON®-system in a wastewater treatment plant is currently being built in Washington, DC.
The DEMON®-system was developed and patented by the University of Innsbruck 11 years ago. Today this successful technology has been implemented in about 70...
Permanent magnets are very important for technologies of the future like electromobility and renewable energy, and rare earth elements (REE) are necessary for their manufacture. The Fraunhofer Institute for Mechanics of Materials IWM in Freiburg, Germany, has now succeeded in identifying promising approaches and materials for new permanent magnets through use of an in-house simulation process based on high-throughput screening (HTS). The team was able to improve magnetic properties this way and at the same time replaced REE with elements that are less expensive and readily available. The results were published in the online technical journal “Scientific Reports”.
The starting point for IWM researchers Wolfgang Körner, Georg Krugel, and Christian Elsässer was a neodymium-iron-nitrogen compound based on a type of...
In the Beyond EUV project, the Fraunhofer Institutes for Laser Technology ILT in Aachen and for Applied Optics and Precision Engineering IOF in Jena are developing key technologies for the manufacture of a new generation of microchips using EUV radiation at a wavelength of 6.7 nm. The resulting structures are barely thicker than single atoms, and they make it possible to produce extremely integrated circuits for such items as wearables or mind-controlled prosthetic limbs.
In 1965 Gordon Moore formulated the law that came to be named after him, which states that the complexity of integrated circuits doubles every one to two...
Characterization of high-quality material reveals important details relevant to next generation nanoelectronic devices
Quantum mechanics is the field of physics governing the behavior of things on atomic scales, where things work very differently from our everyday world.
When current comes in discrete packages: Viennese scientists unravel the quantum properties of the carbon material graphene
In 2010 the Nobel Prize in physics was awarded for the discovery of the exceptional material graphene, which consists of a single layer of carbon atoms...
24.05.2016 | Event News
20.05.2016 | Event News
19.05.2016 | Event News
27.05.2016 | Awards Funding
27.05.2016 | Life Sciences
27.05.2016 | Life Sciences