Dr. Jack Szostak (Harvard) has been working on this for some time. Here's some links:
https://www.youtube.com/watch?v=gjbAzhiIg3U
http://molbio.mgh.harvard.edu/szostakweb/
https://www.youtube.com/watch?v=gjbAzhiIg3U
http://molbio.mgh.harvard.edu/szostakweb/