Irish researchers unlock breakthrough approach to repair peripheral nerve damage

Irish researchers unlock breakthrough approach to repair peripheral nerve damage

• The team’s approach mimics the body’s own natural nerve repair processes to repair damaged nerves
• The novel device supported improved recovery responses at 8-weeks post implantation in pre-clinical studies
• Study part of an ongoing partnership between RCSI, AMBER and Integra LifeSciences, ensuring clinical relevance and pathway from lab to patient

Dublin, Ireland, Monday, 17 January, 2022: Researchers from the RCSI University of Medicine and Health Sciences, AMBER, the SFI Research Centre for Advanced Materials and BioEngineering Research along with leading global medical technology company Integra LifeSciences, today announced new breakthrough for nerve repair therapies based on body’s own processes in the journal Matrix Biology.

The pre-clinical study showed that use of extracellular matrix (ECM) supports improved nerve fibre regeneration across large nerve defects without the need for application of additional cells or growth factors. In these pre-clinical trials, the team’s novel ECM-loaded medical device known as a ‘nerve guidance conduit’, was shown to support improved recovery responses at eight weeks following the repair of traumatic nerve lacerations with substantial loss of tissue.

The research team found that by fine-tuning the combination and ratio of ECM proteins and loading them into the nerve guidance conduit, it was possible to support increased pro-repair inflammation, increased blood vessel density, and increased density of regenerating nerves, all as compared to standard of care. By mimicking the body’s nerve repair processes, this new approach may eliminate the need for additional stem cells and drug therapies.

Peripheral nerve injury is a major clinical problem and is known to affect more than 5 million people worldwide every year, leaving those afflicted with loss of motor or sensory function to muscles or skin. Current therapies to repair nerve damage involve transplanting the patients’ healthy nerves to repair damage or implanting an artificial nerve guidance conduit. The team’s novel patented approach to nerve repair has been shown to increase the density of regenerating long-nerve structures, known as axons, and to generate a strong increase in blood vessel density to better support the regenerating tissues.

Commenting on the results, lead authors Drs. Alan Hibbitts and Zuzana Kočí from the Tissue Engineering Research Group based at Dept. of Anatomy and Regenerative Medicine at RCSI, and AMBER, said:

“In our lab-based trials, we discovered that at eight weeks post implantation our nerve guidance conduit had successfully improved the prognosis for nerve regeneration and repair over the current clinical gold standard. Our conduit supported clear improvements in nerve repair and blood vessel formation and most importantly, we saw that we could scale this up to approach very large nerve defects in our pre-clinical studies.”

Regarding the success of this study, Prof. Fergal O’Brien, Principal Investigator on the project and Professor of Bioengineering and Regenerative Medicine, Head of Tissue Engineering Research Group at RCSI and Deputy Director of AMBER, said the partnership between RCSI, AMBER and Integra LifeSciences was critical to ensure clinical relevance and a pathway from lab to patient.

 “Working with Integra Chief Scientist, Dr. Simon Archibald, the research had a clear focus – to create a device based on scientific excellence with improved outcomes that would translate well through regulatory assessment, into the clinical setting, and ultimately, patients. This provides a more direct route to market and therefore the potential for faster real-world impact in improving patient quality of life.”

Dr Simon Archibald, Chief Scientist at Integra LifeSciences added:

“We have partnered with Prof. Fergal O’Brien and his team at RCSI to innovate new solutions in regenerative medicine since 2005, and over that time, we have rapidly accelerated the development and translation of new biomaterials. We are enthusiastic for the future potential of this iterative innovation to address long-gap nerve repair, building on our current leading clinical materials for short-gap nerve repairs. Placing Integra at the coalface of research enables us to bring our expertise to the heart of the scientific process and identify clinically relevant solutions based on cutting-edge science, to improve patient outcomes and the most efficient pathway from the lab to clinical setting.”

Detailing his teams’ plans, Professor O’Brien said: “Our new ECM-enhanced nerve guidance conduits are part of my team’s ongoing research to address long peripheral nerve defects in partnership with Integra LifeSciences.  The outputs from this project will address increasingly challenging nerve defect distances with the ambition to relieve the current clinical reliance on grafted nerves and move into the next phase of pre-clinical trials.  Our partnership with Integra LifeSciences has been essential to this process, and we look forward to an ambitious programme of work that will advance continued enhanced treatments for nerve damage and injury.”

ENDS

For further information, please contact:

Rachel Kavanagh, Communications, Education and Public Engagement officer, AMBER

kavanara@tcd.ie

T. +353 86 374 8931

Social media contacts:

• Twitter: @ambercentre @RCSI_Irl

• Facebook: @ambercentreireland @rcsi123

• LinkedIn: @ambercentreireland @Royal College of Surgeons in Ireland

About AMBER

AMBER (Advanced Materials and BioEngineering Research) is a world-leading SFI Research Centre hosted by Trinity College Dublin, in partnership with CRANN (Centre for Research on Adaptive Nanostructures and Nanodevices) and the Trinity Centre for Biomedical Engineering at Trinity College, RCSI (Royal College of Surgeons in Ireland) University of Medicine and Health Sciences, University College Cork, NUI Galway, Dublin City University, Tyndall National Institute, University of Limerick and Athlone Institute of Technology. AMBER is a multidisciplinary partnership between leading academics in materials science, bioenginnering and industry, working collaboratively to develop new materials and devices for ICT, medical devices, energy and sustainable industrial technology sectors.

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 (2022). 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.