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Biomaterials Enhanced Regeneration of the Human Cornea: From Bench to Bedside

May Griffith

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Our overall objective is to develop new biomimetic materials that support the regeneration of diseased or damaged corneas as an alternative to the use of human donor allograft corneas, which are in short supply in many countries, for transplantation. We have developed a range of biointeractive materials and one of these iterations was inplanted into 10 patients in a Phase I clinical study. At 24 months post-operative, six of the ten patients could see four times further than before the operation. With the help of rigid contact lenses – the results in all ten patients were similar to what the traditional corneal transplant with human donor tissue would be, with one patient achieving 20/20 vision and two others with 20/25 vision. At 4 years post-operative, the implants continue to be stable. Significantly, there were fewer inflammatory cells in biosynthetic implants observed than in donor allografts.

i-careHowever, these EDC-crosslinked corneas were not suitable in alkali-burnt corneas, unlike collagen-MPC corneas that appeared to block neovascularuzation. While able to withstand neovascularization, they were also able to support the regeneration of the different nerve sub-types in the cornea. In addition, they could be modified to release drugs for high risk transplantation. We have EU ERA-net nanomedicine funding for this project, I-CARE.

 

 

 

Relevant Publications

 

Links to Media Reports and videos

http://www.sciencedaily.com/releases/2010/08/100825142357.htm

http://news.cnet.com/8301-27083_3-20014746-247.html 

http://blogs.nature.com/news/2010/08/biosynthetic_cornea_implant_in.html 

http://www.revophth.com/content/d/review_news/c/25866/

VIDEO: http://www.youtube.com/watch?v=Q91vXbQ8CEA 

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