超级富豪也将成为健康超人
<p><span word="If">If</span> <span word="the">the</span> <span word="human">human</span> <span word="genome">genome</span> <span word="is">is</span> <span word="the">the</span> <span word="book">book</span> <span word="of">of</span> <span word="life">life</span>, <span word="then">then</span> <span word="Crispr">Crispr</span> <span word="technology">technology</span> <span word="is">is</span> <span word="its">its</span> <span word="Microsoft">Microsoft</span> <span word="Word">Word</span>. <span word="The">The</span> <span word="cut">cut</span>-<span word="and">and</span>-<span word="paste">paste</span> <span word="technique">technique</span>, <span word="invented">invented</span> <span word="only">only</span> <span word="three">three</span> <span word="years">years</span> <span word="ago">ago</span>, <span word="can">can</span> <span word="be">be</span> <span word="used">used</span> <span word="on">on</span> <span word="fledgling">fledgling</span> <span word="genomes">genomes</span> <span word="to">to</span> <span word="snip">snip</span> <span word="out">out</span> <span word="bits">bits</span> <span word="of">of</span> <span word="DNA">DNA</span> <span word="and">and</span>, <span word="if">if</span> <span word="required">required</span>, <span word="insert">insert</span> <span word="new">new</span> <span word="stretches">stretches</span>.</p><p>如果说人类基因组是生命之书，那么<span word="Crispr">Crispr</span>技术就是用来编写这本书的<span word="Microsoft">Microsoft</span> <span word="Word">Word</span>。这种基因“剪切和粘贴”技术3年前才问世，可用于从初露端倪的基因组中剪除<span word="DNA">DNA</span>片段，如有需要，还可向基因组中插入新的片段。</p><p><span word="The">The</span> <span word="amendments">amendments</span> <span word="are">are</span> <span word="permanent">permanent</span> <span word="and">and</span> <span word="can">can</span> <span word="be">be</span> <span word="passed">passed</span> <span word="down">down</span> <span word="the">the</span> <span word="generations">generations</span>. <span word="The">The</span> <span word="technology">technology</span> <span word="works">works</span> <span word="on">on</span> <span word="mice">mice</span> <span word="and">and</span> <span word="men">men</span>; <span word="a">a</span> <span word="team">team</span> <span word="in">in</span> <span word="China">China</span> <span word="recently">recently</span> <span word="revealed">revealed</span> <span word="they">they</span> <span word="had">had</span> <span word="partially">partially</span> <span word="succeeded">succeeded</span> <span word="in">in</span> <span word="excising">excising</span> <span word="the">the</span> <span word="gene">gene</span> <span word="for">for</span> <span word="beta">beta</span> <span word="thalassaemia">thalassaemia</span>, <span word="an">an</span> <span word="inherited">inherited</span> <span word="blood">blood</span> <span word="disorder">disorder</span>, <span word="from">from</span> <span word="a">a</span> <span word="human">human</span> <span word="embryo">embryo</span>. <span word="It">It</span> <span word="is">is</span> <span word="a">a</span> <span word="wonder">wonder</span> <span word="society">society</span> <span word="is">is</span> <span word="not">not</span> <span word="yet">yet</span> <span word="spooked">spooked</span> <span word="by">by</span> <span word="what">what</span> <span word="could">could</span> <span word="be">be</span> <span word="a">a</span> <span word="defining">defining</span> <span word="technology">technology</span> <span word="for">for</span> <span word="the">the</span> <span word="future">future</span> <span word="of">of</span> <span word="humanity">humanity</span>.</p><p>这种修改是永久性的，可以代代相传。这种技术可以用于小鼠和人类；中国的一个科研小组最近透露，他们从一个人类胚胎上切除β-地中海贫血症（一种遗传性血液疾病）基因的操作取得了部分成功。奇怪的是，这种可能界定人类未来的技术还未震惊社会。</p><p><span word="Crispr">Crispr</span> — <span word="short">short</span> <span word="for">for</span> <span word="clustered">clustered</span> <span word="regularly">regularly</span> <span word="interspaced">interspaced</span> <span word="short">short</span> <span word="palindromic">palindromic</span> <span word="repeats">repeats</span> — <span word="is">is</span> <span word="the">the</span> <span word="simplest">simplest</span> <span word="of">of</span> <span word="a">a</span> <span word="suite">suite</span> <span word="of">of</span> <span word="new">new</span> <span word="gene">gene</span>-<span word="editing">editing</span> <span word="technologies">technologies</span>, <span word="and">and</span> <span word="is">is</span> <span word="a">a</span> <span word="trick">trick</span> <span word="borrowed">borrowed</span> <span word="from">from</span> <span word="the">the</span> <span word="bacterial">bacterial</span> <span word="immune">immune</span> <span word="system">system</span>. <span word="Bacteria">Bacteria</span>, <span word="when">when</span> <span word="invaded">invaded</span> <span word="by">by</span> <span word="a">a</span> <span word="virus">virus</span>, <span word="deploy">deploy</span> “<span word="molecular">molecular</span> <span word="scissors">scissors</span>” — <span word="a">a</span> <span word="DNA">DNA</span>-<span word="cutting">cutting</span> <span word="enzyme">enzyme</span> <span word="that">that</span> <span word="chops">chops</span> <span word="up">up</span> <span word="the">the</span> <span word="invader">invader</span>. <span word="Pair">Pair</span> <span word="the">the</span> <span word="scissors">scissors</span> <span word="with">with</span> <span word="a">a</span> <span word="guiding">guiding</span> <span word="molecule">molecule</span> <span word="capable">capable</span> <span word="of">of</span> <span word="directing">directing</span> <span word="the">the</span> <span word="blades">blades</span> <span word="to">to</span> <span word="a">a</span> <span word="specific">specific</span> <span word="point">point</span>, <span word="and">and</span> <span word="you">you</span> <span word="are">are</span> <span word="ready">ready</span> <span word="to">to</span> <span word="edit">edit</span> <span word="a">a</span> <span word="genome">genome</span>. <span word="After">After</span> <span word="the">the</span> <span word="DNA">DNA</span> <span word="is">is</span> <span word="severed">severed</span>, <span word="cellular">cellular</span> <span word="repair">repair</span> <span word="machinery">machinery</span> <span word="kicks">kicks</span> <span word="in">in</span> <span word="to">to</span> <span word="close">close</span> <span word="the">the</span> <span word="gap">gap</span> <span word="and">and</span> <span word="the">the</span> <span word="embryo">embryo</span> <span word="continues">continues</span> <span word="to">to</span> <span word="develop">develop</span>. <span word="This">This</span> <span word="is">is</span> <span word="how">how</span> <span word="the">the</span> <span word="Chinese">Chinese</span> <span word="scientists">scientists</span> <span word="banished">banished</span> <span word="the">the</span> <span word="mutant">mutant</span> <span word="gene">gene</span> <span word="from">from</span> <span word="their">their</span> <span word="human">human</span> <span word="embryo">embryo</span>.</p>
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