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!
Climate Impact Research in Hannover: Small Plants against Large Waves
17.08.2018 | Leibniz Universität Hannover
First transcription atlas of all wheat genes expands prospects for research and cultivation
17.08.2018 | Leibniz-Institut für Pflanzengenetik und Kulturpflanzenforschung
New design tool automatically creates nanostructure 3D-print templates for user-given colors
Scientists present work at prestigious SIGGRAPH conference
Most of the objects we see are colored by pigments, but using pigments has disadvantages: such colors can fade, industrial pigments are often toxic, and...
Scientists at the University of California, Los Angeles present new research on a curious cosmic phenomenon known as "whistlers" -- very low frequency packets...
Scientists develop first tool to use machine learning methods to compute flow around interactively designable 3D objects. Tool will be presented at this year’s prestigious SIGGRAPH conference.
When engineers or designers want to test the aerodynamic properties of the newly designed shape of a car, airplane, or other object, they would normally model...
Researchers from TU Graz and their industry partners have unveiled a world first: the prototype of a robot-controlled, high-speed combined charging system (CCS) for electric vehicles that enables series charging of cars in various parking positions.
Global demand for electric vehicles is forecast to rise sharply: by 2025, the number of new vehicle registrations is expected to reach 25 million per year....
Proteins must be folded correctly to fulfill their molecular functions in cells. Molecular assistants called chaperones help proteins exploit their inbuilt folding potential and reach the correct three-dimensional structure. Researchers at the Max Planck Institute of Biochemistry (MPIB) have demonstrated that actin, the most abundant protein in higher developed cells, does not have the inbuilt potential to fold and instead requires special assistance to fold into its active state. The chaperone TRiC uses a previously undescribed mechanism to perform actin folding. The study was recently published in the journal Cell.
Actin is the most abundant protein in highly developed cells and has diverse functions in processes like cell stabilization, cell division and muscle...
17.08.2018 | Event News
08.08.2018 | Event News
27.07.2018 | Event News
17.08.2018 | Physics and Astronomy
17.08.2018 | Information Technology
17.08.2018 | Life Sciences