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‘Minimal’ cell raises stakes in race to harness synthetic life

146 点作者 superfx大约 9 年前

6 条评论

dghughes大约 9 年前
I wonder would it be possible to accelerate a synthetic cell&#x27;s evolution via software?<p>If you already know exactly what&#x27;s in the cell (you built it!) could a computer speed up its life via a software model and jump ahead to something more complex which you build as version 2?
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pak大约 9 年前
This article is self-contradictory.<p>In the second caption: &quot;Each cell of JCVI-syn3.0 contains just 473 genes, fewer than any other independent organism.&quot;<p>In the main text: &quot;In a 1995 Science paper, Venter’s team sequenced the genome of Mycoplasma genitalium, a sexually transmitted microbe with the smallest genome of any known free-living organism, and mapped its 470 genes.&quot;<p>Which is it? Venter would have seemed to disproven his own claim to novelty, unless we&#x27;ve found new genes in <i>M. genitalium</i>&#x27;s genome since 1995.<p>Edit: As with most biological terms, part of the problem is the fuzziness of the definition of &quot;gene&quot;. More recent studies claim <i>M. genitalium</i> has 525 genes [1], but that might be including tRNA and ncRNA regions. I&#x27;d still object to the article&#x27;s poor editing. Also, let&#x27;s get down to brass tacks here: we&#x27;ve only trimmed a 580kb genome down to 531kb (9% reduction). Clearly, life is already pretty damn efficient.<p>[1] <a href="http:&#x2F;&#x2F;www.cell.com&#x2F;cell&#x2F;fulltext&#x2F;S0092-8674(12)00776-3" rel="nofollow">http:&#x2F;&#x2F;www.cell.com&#x2F;cell&#x2F;fulltext&#x2F;S0092-8674(12)00776-3</a>
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Terr_大约 9 年前
Often this topic makes me think of some of the fictional technology present in Deus Ex, released back in 2000, e.g:<p>&gt; The cells of every major tissue in the body of a nano-augmented agent are host to nanite-capsid &quot;hybrids.&quot; These hybrids replicate in two stages: the viral stage, in which the host cell produces capsid proteins and packages them into hollowed viral particles, and the nanotech stage, in which the receiver-transmitter and CPU are duplicated and inserted into the protective viral coating. New RNA sequences are transmitted by microwave and translated in to plasmid vectors, resulting in a wholly natural and organic process.
nsxwolf大约 9 年前
Minimal cell, or minimal genome? I don&#x27;t think we&#x27;re anywhere near capable of creating a synthetic cell, minimal or not.
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justsaysmthng大约 9 年前
&gt; Church says that genome-editing techniques will remain the go-to choice for most applications ...<p>George Church is kind of a sarcastic name for a genetic scientist..<p>But the ethics question is more open then ever. Didn&#x27;t you immediately think about how cool it would be if we could program these organisms to do stuff ? I did. Could you then program it to become multi-cellular ?<p>How long before this can be achieved ? 10 years ? 50 ?<p>However, &quot;Because it’s there&quot; is a worrying motivation to pursue this knowledge, because the pandora&#x27;s box it opens is very real.<p>We&#x27;re getting closer to the point were we can play God and achieve magical technological feats.<p>But are we mature enough to handle the powers that this technology bestows upon us ? Do we really need this technology now ?
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horsecaptin大约 9 年前
Hopefully they&#x27;re not creating something airborne with an unending thirst for life.