Tag Archives: USA

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Silky solution to storing vaccines and drugs | Chemistry World

July 12, 2012 – 8:00 am

Silky solution to storing vaccines and drugs | Chemistry World - Storing delicate vaccines and antibiotics in freeze-dried silk could eliminate the need for refrigerated storage, reducing transport costs and waste, say US researchers. The biggest advantage could be in developing countries, which lack the finances and infrastructure to maintain a ‘cold chain’ when distributing medicines, but are often the places where they are most needed. Reference: J Zhang et al, Proc. Natl. Acad. Sci. USA, 2012, (10.173/pnas.1206210109)

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Bloody solution to electrochemical DNA sensors

June 26, 2012 – 6:02 pm

Bloody solution to electrochemical DNA sensors - US researchers have discovered a way to significantly improve the sensitivity of DNA-based electrochemical sensors by incorporating an inexpensive, robust and stable protein into the system – haemoglobin. Reference: C G Pheeney et al, Proc. Nat. Acad. Sci. USA, 2012, DOI: 10.1073/pnas.1201551109

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Rewritable DNA for digital data storage

May 23, 2012 – 12:00 pm

Rewritable DNA for digital data storage - Researchers in the US have engineered DNA in a living cell to act as a rewritable memory storage module. This can form the basis of a digital memory system, the scientists suggest, with the cell being able to 'record' transient changes in its internal chemistry. If multiple DNA switches could be operated simultaneously, each responding to a different set of inputs, complex cellular processes, such as differentiation or cancer development, could tracked simply using a few DNA switches. Reference: J Bonnet et al, Proc. Nat. Acad. Sci. USA, 2012, DOI: 10.1073/pnas.1202344109

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