New antiviral materials made from sugar have been developed by researchers from the University of Manchester, the University of Geneva and the EPFL in Lausanne. They can destroy viruses on contact and may help in the fight against viral outbreaks.
Although at an early stage of development, the broad-spectrum activity of this compound could also be effective against new emerging viruses such as the recent coronavirus currently of concern in China.
This new development from a collaborative team of international scientists from the University of Manchester, the University of Geneva (UNIGE) and the EPFL in Lausanne, Switzerland, shows promise for the treatment of herpes simplex (cold sore virus), respiratory syncytial virus, hepatitis C, HIV, and Zika virus to name a few. The team have demonstrated success treating a range of viruses in the lab – including respiratory infections to genital herpes. Although at an early stage of development, the broad-spectrum activity of this compound could also be effective against new emerging viruses such as the recent coronavirus currently of concern in China.
So called ‘virucidal’ substances, such as bleach, are typically capable of destroying viruses on contact but are extremely toxic to humans and so cannot be taken or applied to the human body without causing severe harm. Developing virucides from sugar has allowed for the development of a new type of antiviral drug, which destroys viruses yet is non-toxic to humans.
Current antiviral drugs work by inhibiting virus growth, but they are not always reliable as viruses can mutate and become resistant to these treatments.
Using modified sugar molecules the team showed that the outer shell of a virus can be disrupted, thereby destroying the infectious particles on contact, as oppose to simply restricting its growth. This new approach has also been shown to defend against drug resistance.
The research published in the journal Science Advances shows that the team successfully engineered new modified molecules using natural glucose derivatives, known as cyclodextrins. The molecules attract viruses before breaking them down on contact, destroying the virus and fighting the infection.
Dr Samuel Jones, from The University of Manchester and a member of the Henry Royce Institute for Advanced Materials, jointly led the pioneering research with Dr Valeria Cagno, a researcher at the UNIGE Faculty of Medicine. They said: “We have successfully engineered a new molecule, which is a modified sugar that shows broad-spectrum antiviral properties. The antiviral mechanism is virucidal meaning that viruses struggle to develop resistance. As this is a new type of antiviral and one of the first to ever show broad-spectrum efficacy, it has potential to be a game changer in treating viral infections.” Prof Caroline Tapparel from UNIGE Faculty of Medicine and Prof Francesco Stellacci from EPFL, the senior authors of the study, declared: “We developed a powerful molecule able to work against very different viruses, therefore, we think this could be game changing also for emerging infections”.
The molecule is patented and a spin-out company is being set up to continue pushing this new antiviral towards real world use. With further testing the treatment could find a use in creams, ointments and nasal sprays or other similar treatments for viral infections. This exciting new material can work to break down multiple viruses making for cost-effective new treatments even for resistant viruses.
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