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Health

'Strings' of drugs deliver only when needed

By David Robson

30 December 2008

STRINGING drug molecules into fibres that unravel in the presence of a specific enzyme could allow medication to be released exactly when and where it is needed.

Previously, drugs have been bundled with polymers that, once injected into a patient, slowly break down to release the drug. By tuning the properties of the polymer, this allows the timing of a drug’s release to be pre-programmed. However, the polymers can release toxic molecules as they degrade.

Now from the City University of New York and team have created a way to pre-program drug release without using potentially harmful…

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