Scientists simplify discovery of gels

16 Dec 2014

Scientists at the University of Strathclyde and City University of New York have created methods that are said to dramatically simplify the discovery of biological gels for food, cosmetics and biomedicine, as published in the journal Nature Chemistry. Strathclyde’s Dr Tell Tuttle and Professor Rein Ulijn, the director of nanoscience at City University New York’s […]

Scientists simplify discovery of gels

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Scientists at the University of Strathclyde and City University of New York have created methods that are said to dramatically simplify the discovery of biological gels for food, cosmetics and biomedicine, as published in the journal Nature Chemistry.

Strathclyde’s Dr Tell Tuttle and Professor Rein Ulijn, the director of nanoscience at City University New York’s new advanced research centre who also holds a position at Strathclyde, believe their team’s breakthrough dramatically simplifies discovery of functional gels that can be used in a wide range of applications.

Until now, discovery of new gels relied largely on chance discoveries, the researchers said. They developed a screening method to accurately predict how peptides – the building blocks of living systems – could combine to form stable gels.

“It is our aim to design structures based on peptides that are inspired by biology, but are much simpler, making them scalable, tunable, robust and functional and we now have predictive methods to achieve this,” said Ulijn.

The study notes that the number of possible sequences of amino acids is huge, meaning it is not feasible to test them all – previously limiting the discovery of new candidate peptides for specific applications.

Prior to this discovery, there was no way to reliably predict whether a particular peptide – e.g. a tripeptide composed of three amino acids – would form a structure, such as a biological gel, and scientists would rely on chance or time-consuming individual experiments of each one.

“There are 8,000 possible tripeptides and we have developed computational methods to predict which of these could be used to develop materials with desirable properties,” said Tuttle. “These methods led to the discovery of a new family of simple tripeptides that are able to form hydrogels at neutral pH. These materials are much simpler compared to the gels of biological systems but they have some interesting properties that may be exploited in various areas, such as cell culture and ingredients for cosmetics.”

 

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