A team of scientists from the School of Chemistry and the Manchester Interdisciplinary Biocentre (MIB) at The University of Manchester have found a way of hijacking so-called ‘riboswitches’ and directing gene activity.
Working within cells of bacteria, chemical biologist Professor Jason Micklefield and his team have rewired these genetic switches so they are no longer activated by small naturally occurring molecules found in cells – but through the addition of a synthetic molecule.
The work builds on the recent discovery that these naturally occurring molecules can turn genes on and off by triggering riboswitches found within a large molecule called ‘messenger RNA’.
In the latest research, when Manchester researchers added synthetic molecules, they bound to the riboswitches and caused the genes to spark into life.
The findings are reported in the latest edition of Proceedings of the National Academy of Sciences (PNAS). The work was funded by the Biotechnology and Biological Sciences Research Council (BBSRC) and Selective Chemical Intervention in Biological Systems Initiative.
The Manchester team monitored how successfully they had re-wired the cells by observing the creation of a gene product that makes the cells glow green.
Dr Neil Dixon, a senior researcher in the team, said: “Being able to selectively activate and regulate genes could have tremendous impact in drug discovery and the emerging field of synthetic biology.
“This technology could be used to turn on and off important biological pathways and processes, leading to a deeper understanding of how cells function.
“The next big challenge is to apply this technology to study biological processes within human cells. This could allow us to discover more about our hugely complex biological selves.”
The Manchester team is now working on ways to simultaneously activate and control multiple genes using these re-wired riboswitches.
Notes to editors
Reengineering orthogonally selective riboswitches will be published online in Proceedings of the National Academy of Sciences (PNAS) during the week beginning 25 January 2010.
A copy of the paper is available on request.
The Biotechnology and Biological Sciences Research Council (BBSRC) is the UK funding agency for research in the life sciences. Sponsored by Government, BBSRC annually invests around £450M in a wide range of research that makes a significant contribution to the quality of life for UK citizens and supports a number of important industrial stakeholders including the agriculture, food, chemical, healthcare and pharmaceutical sectors. BBSRC carries out its mission by funding internationally competitive research, providing training in the biosciences, fostering opportunities for knowledge transfer and innovation and promoting interaction with the public and other stakeholders on issues of scientific interest in universities, centres and institutes.
The Babraham Institute, Institute for Animal Health, Institute of Food Research, John Innes Centre and Rothamsted Research are Institutes of BBSRC. The Institutes conduct long-term, mission-oriented research using specialist facilities. They have strong interactions with industry, Government departments and other end-users of their research.