Proceedings of MATSUS Fall 2023 Conference (MATSUSFall23)
DOI: https://doi.org/10.29363/nanoge.matsus.2023.249
Publication date: 18th July 2023
Bioelectronic medicine have enormous potential not only to replace lost body function but also for guiding and encouraging regenerative processes, helping the body to self-repair. The ability of our skin to self-heal is something so integral to our everyday life that we barely reflect on how remarkable this is. Other parts of our bodies have very limited healing capability, especially the very complex structures of brain and spinal cord. Furthermore, while most of us take our self-repairing skin for granted, old age and certain diseases can drastically reduce this ability, greatly increasing the risk that seemingly uncomplicated wounds develop into chronic ones.
Together wiht my team I have shown how electrical field stimulation can have a guiding effect on skin cell migration, which could be of great significance to speed up wound closure and reduce the risk for chronic wounds. Together with collaboration partners we now explore how similar principles can be used to promote more constructive repair after traumatic injury. The common denominator for these therapeutic concepts is electrical field stimulation, in other words direct current injected into the tissue. This places special constraints on the electrode materials used to ensure biocompatible and reversible direct current injection mechanisms. My talk will outline some material concepts that we have developed for this and which electrochemical boundary conditions that apply to ensure that direct current stimulation can be sustained in tissue even with fully implantable systems. I will showcase how we employ conducting polymer hydrogels for direct current stimulation, and how such technology allows for new discoveries as well as potential future therapies.
This work was supported by research grants from the European Research Council (ERC) under the European Union's Horizon 2020 research and innovation program (Grant Agreement No. 759655, SPEEDER), and Freiburg Institute for Advanced Studies (FRIAS). Furthermore the work on spinal cord was supported by the CatWalk Spinal Cord Injury Trust.
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