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Home NEWS Science News Health

New adaptable nanoparticle platform enables enhanced delivery of gene therapies

Bioengineer by Bioengineer
June 9, 2021
in Health
Reading Time: 3 mins read
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Credit: RCSI

Scientists have developed polypeptide-based materials that act as effective vectors for delivering gene therapies. The first-of-its-kind platform enables the vectors to be adapted to suit the specific gene therapy cargo.

The work, led by researchers from RCSI University of Medicine and Health Sciences and funded by Science Foundation Ireland, is published in Biomaterials Science.

A major challenge for gene therapies is preparing them in a way that can deliver the genetic information into the host cells. For the Covid-19 vaccines that use mRNA technology, the genetic information is delivered in a lipid nanoparticle to maintain its stability and deliver it into cells. The success of the COVID vaccines has established nanoparticles as key to the development of many advanced therapies.

The researchers developed a platform that produces bespoke star-shaped polypeptide nanoparticles, which effectively deliver a range of therapies, including gene therapies. Crucially, these polypeptides are more flexible and easier to handle than lipids. To demonstrate the potential of this material, the researchers used it to deliver a gene therapy that regenerated bone.

In preclinical work, the researchers loaded the material with DNA molecules that promote bones and blood vessels to regrow. They placed these nanomedicines in a scaffold that could be implanted into a defect site and deliver the genetic cargo into infiltrating host cells. The gene-loaded scaffold accelerated bone tissue regeneration, with a six-fold increase in new bone formation compared to a scaffold alone.

“With the success of the COVID-19 vaccines, the potential of gene therapies is becoming apparent, and advanced nanoparticle delivery systems are key to enabling their use clinically. We have shown that these nanoparticles have real potential to be a game changer in the delivery of gene therapies,” said Professor Sally-Ann Cryan, the study’s senior author and Professor of Drug Delivery, RCSI.

“While more testing is needed before these therapies can be used clinically, our platform allows us to design our polypeptides to meet a variety of delivery scenarios and provide tailored solutions to gene delivery challenges,” added Professor Andreas Heise, project collaborator and Professor of Polymer Chemistry, RCSI.

“We are developing this patent-protected technology towards commercialisation, with support from an Enterprise Ireland Commercialisation Fund Award, and are seeking expressions of interest from industry partners and investors.”

###

About RCSI University of Medicine and Health Sciences

RCSI University of Medicine and Health Sciences is a world-leading university for Good Health and Well-being. Ranked second in the world for its contribution to UN Sustainable Development Goal 3 in the Times Higher Education Impact Rankings 2021, it is exclusively focused on education and research to drive improvements in human health worldwide.

RCSI is an international not-for-profit university, headquartered in Dublin. It is among the top 250 universities worldwide in the World University Rankings (2021) and its research is ranked first in Ireland for citations. RCSI has been awarded Athena Swan Bronze accreditation for positive gender practice in higher education.

Visit the RCSI MyHealth Expert Directory to find the details of our experts across a range of healthcare issues and concerns. Recognising their responsibility to share their knowledge and discoveries to empower people with information that leads them to better health, these clinicians and researchers are willing to engage with the media in their area of expertise.

Media Contact
Michael Sullivan
[email protected]

Related Journal Article

http://dx.doi.org/10.1039/D1BM00094B

Tags: BiochemistryBiomedical/Environmental/Chemical EngineeringBiotechnologyGene TherapyGeneticsMedicine/HealthPharmaceutical ChemistryPharmaceutical ScienceTechnology Transfer
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