There is this guy, Martin Hanczyc, working on protocells to better understand how the beginning of life occurred. He makes synthetic protocells. They don't have any DNA in them but they are pretty cool and maybe the beginnings to making synthetic cells. Perhaps once science has figured out how cells began and their very minimal needs they can create completely synthetic cells.
http://www.ted.com/talks/martin_hanczyc_the_line_between_life_and_not_life.html
Also, just thinking, what would we consider completely synthetic cells? If we took synthetic protocells and they eventually evolved into a cell with DNA would that still be synthetic?
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