Computer programs are already exhibiting many of the characteristics of organic lifeforms, up to and including evolution - hilarious, since they're the only things that really are "Intelligently Designed" - and there's no reason to believe that life or awareness are exclusively organic attributes.  You could say we've only ever seen chemical-based constructs which are alive, but in the past the same argument could have been applied to things moving under their own power, flight or the ability to count - and it turns out we've built machines that are sort of far better at all those things than the fleshy equivalents.  If there is a magic "life-chemical" mixed in with all the blood and guts, we haven't found it.