February 22, 2024


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Researchers use acoustics to boost … – Information Centre – Research & Innovation

Armed with a novel biosensor that utilizes acoustic waves to detect tumour DNA, an EU-funded task could increase the precision and affordability of most cancers prognosis and support make personalised therapy a truth for additional people.


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Most cancers is the second most frequent induce of dying all over the world. There ended up 9.six million most cancers-related deaths in 2018 – amounting to a person in six deaths – and this selection is predicted to rise by 70 {79e59ee6e2f5cf570628ed7ac4055bef3419265de010b59461d891d43fac5627} over the following two decades.

When it comes to most cancers prognosis and monitoring, a non-invasive procedure known as liquid biopsy has the potential to outperform conventional methods these kinds of as solid-tissue biopsies, ultrasound scans and magnetic resonance imaging (MRI). With a straightforward blood check, liquid biopsies identify DNA released from most cancers cells to expose a extensive assortment of facts about the tumour. Having said that, the procedure is rarely applied for prognosis for the reason that it remains laborious, inefficient and rather high-priced.

Enter the EU-funded Capture-U-DNA task. The researchers associated have devised a new liquid biopsy procedure, which could pave the way to additional correct prognosis and lessen the need to have for invasive solid-tissue biopsies.

The novel and extremely-sensitive technologies platform could also be applied to watch people additional reliably and cost”effectively, thus paving the way toward additional personalised therapy.

‘We’ve targeted on detecting of the BRAF-V600E issue mutation, which is offered in different most cancers varieties and has large scientific significance for personalised treatment,’ claims task coordinator Electra Gizeli of the Institute of Molecular Biology and Biotechnology at FORTH in Greece.

‘Our solution properly and reliably detects a single molecule of genomic DNA carrying this mutation in ten 000 ordinary DNA molecules – all in about two hours from sample to end result.’

Sounding out a new procedure

At this time, blood serum gathered in a liquid biopsy have to endure polymerase chain reaction (PCR) in order to amplify unusual, tiny fragments of tumour DNA (ctDNA) to the issue at which they can be detected.

The Capture-U-DNA platform identifies ctDNA applying the very sensitive allele-certain polymerase chain reaction (AS-PCR) assay, which only amplifies fragments of DNA that include the concentrate on mutation.

Scientists merged this assay with their new acoustic wave biosensor, made to detect tiny amounts of ctDNA and in a position to analyse multiple samples in the course of every operate. The amplified ctDNA is immobilised on the biosensor, foremost to the subsequent binding of liposomes (applied to carry medicine or other substances into entire body tissues) on the device’s floor. It is this party that alters the acoustic signal and announces the detection of concentrate on DNA.

This strategy of sensing concentrate on DNA – which avoids the need to have for high-priced optical pieces applied for conventional detection applying fluorescence – is the central innovation of the Capture-U-DNA task.

Proving the theory

‘We’re currently in the approach of validating the technologies applying tissue and plasma samples from melanoma, colorectal and lung most cancers people received by our scientific companion, the University of Crete,’ claims Gizeli.

‘Results so considerably are pretty promising. In the coming months, we’ll complete our validation research of detecting ctDNA from patients’ samples and in just the context of liquid biopsy.’

As the developer of the new acoustic platform and sensor array, AWSensors in Spain has ideas to commercialise the technologies for further laboratory exploration, as well as for use in the scientific field.

The task comes under the FET Open Horizon 2020 programme which supports early-phase science and technologies exploration into radically new potential systems.