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Home > Press > Key Bio Nano Consulting partner develops novel nanolitre scale technique for determining protein stability and ligand-binding affinity

Schematic of the microcapillary technique for label-free protein analysis
Schematic of the microcapillary technique for label-free protein analysis

Abstract:
BNC to provide commercial access to new technique enabling evaluation of low expressing proteins without the need for fluorescent tags

Key Bio Nano Consulting partner develops novel nanolitre scale technique for determining protein stability and ligand-binding affinity

UK | Posted on August 25th, 2010

Bio Nano Consulting (BNC), specialists in bio and nanotechnology partnerships between the academic and industrial sectors, announces the availability of a new technique that screens low-yielding proteins, facilitating the evaluation of both protein denaturation and protein:drug interactions.

This novel method, pioneered by researchers from the UCL Department of Biochemical Engineering and the London Centre for Nanotechnology, in collaboration with Cambridge and Sussex Universities, is applicable to any free solution protein:drug interaction. The technique applies microfluidics, using just nanolitres of sample - coupling protein stability and drug affinity analysis to microfluidic devices for sample preparation. In a paper recently published in the industry journal Protein Science, the researchers established a new nanolitre scale technique in micro-capillaries to measure intrinsic protein fluorescence and obtain accurate protein denaturation curves at equilibrium - for the full article please click here.

For the first time, free energies of protein unfolding were determined by the innovative method and used to determine the affinity of a drug - the immunosuppressant rapamycin - to a protein, the cellular immunophilin FKBP12. In addition, the microcapillary technique was used to measure the interaction energy between rapamycin and the Phe99 residue of FKBP-12 from a double mutant cycle analysis. The method utilised combinations of two different protein mutations to study the molecular interactions within a given protein.

Until now, the modus operandi for protein analysis often meant either too much of the precious biological or compound materials were consumed in large sample volumes, or that chemical labelling with fluorescent tags was required to achieve measurements at submicrolitre volumes.

Commenting on the ground-breaking technique Dr David Sarphie, BNC's CEO, said: "We are delighted to be able to offer access to this innovative technique developed by scientific researchers at UCL and LCN to our clients. Indeed, this new method has vast implications and uses in high throughput, low cost platforms for drug discovery, protein engineering and protein formulation applications in the pharmaceutical industry."

He added: "Moreover, this technology marks a further development in the implementation of our corporate strategy to forge industry collaborations with leading academic and scientific organisations that possess the know-how to assess novel drug targets. Indeed, we look forward to combining our project management expertise with access to the technology and novel technique concerned to develop screening systems in the drug discovery market."

####

About Bio Nano Consulting
Bio Nano Consulting is a joint venture of Imperial College London and University College London that specialises in delivering innovative solutions to industry across the life sciences and technology sectors. We are the first consultancy in Europe to focus on the intersection between bio and nanotechnology, providing product development and strategic consultancy, project management and access to state of the art instrumentation and world-leading researchers.

For more information, please click here

Contacts:
Tristan Jervis or Alex Heeley on
00 44 207 861 3838

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