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Home NEWS Science News Chemistry

Device cracks milk protein

Bioengineer by Bioengineer
July 23, 2021
in Chemistry
Reading Time: 3 mins read
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‘Refolding’ molecules to support medical solutions

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Credit: Flinders University

After gaining world attention by ‘unboiling’ egg protein, Flinders University scientists have now used an Australian-made novel thin film microfluidic device to manipulate Beta-lactoglobulin (β-lactoglobulin), the major whey protein in cow’s, sheep’s and other mammals.

The so-called Vortex Fluidic Device has previously been used in an array of experiments to successfully ‘un-boil’ egg protein and even break the molecular bonds of one of the world’s hardest material, carbon nanotubes.

In the latest application, published in Molecules, College of Science and Engineering experts have combined the capabilities of the VFD with a new form of biosensor called TPE-MI, which is an aggregation-induced emission luminogen (AIEgen).

“In the human body, protein folding is a regular process which in some cases may involve misfolding and aggregation such as in gene mutation, which can upset the balance,” says Professor Youhong Tang, whose research focuses on expanding AIEgen technologies.

“One is example is the buildup of amyloid proteins, which is associated with diseases such as Alzheimer’s, Parkinson’s and Huntington’s. Finding ways to monitor these protein levels – and even reversing high levels of these cellular aggregations – could lead to future therapies.”

SA Scientist of the Year Professor Colin Raston, who designed the VFD, says the combination of both technologies produced some promising results in fields of medical discovery.

“In this latest study, we showed how vital proteins can be manipulated – unfolded and refolded – using β-lactoglobulin, which is a relatively simple, low molecular weight protein.

“Combining VFD and AIE technologies provides a fully capable and robust method for controlling and monitoring the progress of protein denaturation and renaturation.”

The research team will now use the technology combination on other proteins, focusing on those highly related to Alzheimer’s disease, Parkinson’s disease, and Huntington’s disease.

###

In Situ Monitored Vortex Fluidic-Mediated Protein Refolding/Unfolding Using an Aggregation-Induced Emission Bioprobe (2021) by Qi Hu, H Hu, X Zhang, K Fan,Y Hong, CL Raston and Y Tang has been published in Molecules Vol 26, Issue 14. DOI: 10.3390/molecules26144273 https://www.mdpi.com/1420-3049/26/14/4273/htm#

See also:

https://news.flinders.edu.au/blog/2021/06/09/wider-applications-for-vortex-fluidic-device/

https://news.flinders.edu.au/blog/2020/11/24/new-frontier-in-enzyme-chemical-processing/

https://news.flinders.edu.au/blog/2021/01/18/new-directions-in-energy-storage/

https://news.flinders.edu.au/blog/2020/06/24/vfd-creates-improved-bacteria-detector/

https://news.flinders.edu.au/blog/2020/09/12/refined-finish-for-more-functional-fish-oil/

Acknowledgements: Q. Hu receives financial support from Postgraduate Research Scholarships (International) for his study at Flinders University. Y. Hong and Y. Tang are supported by the Australia-China Science and Research Fund – Joint Research Centre on Personal Health Technologies. This work is also supported by the Australia Research Council (DP200101106).

Media Contact
Professor Youhong Tang
[email protected]

Related Journal Article

http://dx.doi.org/10.3390/molecules26144273

Tags: AlzheimerBiochemistryBiotechnologyCell BiologyMedicine/Healthneurobiology
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